| /* |
| * Copyright © 2016 Red Hat. |
| * Copyright © 2016 Bas Nieuwenhuizen |
| * |
| * based in part on anv driver which is: |
| * Copyright © 2015 Intel Corporation |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #include "radv_private.h" |
| #include "radv_shader.h" |
| #include "radv_shader_helper.h" |
| #include "nir/nir.h" |
| |
| #include <llvm-c/Core.h> |
| #include <llvm-c/TargetMachine.h> |
| #include <llvm-c/Transforms/Scalar.h> |
| #include <llvm-c/Transforms/Utils.h> |
| |
| #include "sid.h" |
| #include "ac_binary.h" |
| #include "ac_llvm_util.h" |
| #include "ac_llvm_build.h" |
| #include "ac_shader_abi.h" |
| #include "ac_shader_util.h" |
| #include "ac_exp_param.h" |
| |
| #define RADEON_LLVM_MAX_INPUTS (VARYING_SLOT_VAR31 + 1) |
| |
| struct radv_shader_context { |
| struct ac_llvm_context ac; |
| const struct radv_nir_compiler_options *options; |
| struct radv_shader_info *shader_info; |
| const struct nir_shader *shader; |
| struct ac_shader_abi abi; |
| |
| unsigned max_workgroup_size; |
| LLVMContextRef context; |
| LLVMValueRef main_function; |
| |
| LLVMValueRef descriptor_sets[MAX_SETS]; |
| LLVMValueRef ring_offsets; |
| |
| LLVMValueRef vertex_buffers; |
| LLVMValueRef rel_auto_id; |
| LLVMValueRef vs_prim_id; |
| LLVMValueRef es2gs_offset; |
| |
| LLVMValueRef oc_lds; |
| LLVMValueRef merged_wave_info; |
| LLVMValueRef tess_factor_offset; |
| LLVMValueRef tes_rel_patch_id; |
| LLVMValueRef tes_u; |
| LLVMValueRef tes_v; |
| |
| /* HW GS */ |
| /* On gfx10: |
| * - bits 0..10: ordered_wave_id |
| * - bits 12..20: number of vertices in group |
| * - bits 22..30: number of primitives in group |
| */ |
| LLVMValueRef gs_tg_info; |
| LLVMValueRef gs2vs_offset; |
| LLVMValueRef gs_wave_id; |
| LLVMValueRef gs_vtx_offset[6]; |
| |
| LLVMValueRef esgs_ring; |
| LLVMValueRef gsvs_ring[4]; |
| LLVMValueRef hs_ring_tess_offchip; |
| LLVMValueRef hs_ring_tess_factor; |
| |
| /* Streamout */ |
| LLVMValueRef streamout_buffers; |
| LLVMValueRef streamout_write_idx; |
| LLVMValueRef streamout_config; |
| LLVMValueRef streamout_offset[4]; |
| |
| gl_shader_stage stage; |
| |
| LLVMValueRef inputs[RADEON_LLVM_MAX_INPUTS * 4]; |
| |
| uint64_t output_mask; |
| |
| bool is_gs_copy_shader; |
| LLVMValueRef gs_next_vertex[4]; |
| LLVMValueRef gs_curprim_verts[4]; |
| LLVMValueRef gs_generated_prims[4]; |
| LLVMValueRef gs_ngg_emit; |
| LLVMValueRef gs_ngg_scratch; |
| |
| uint32_t tcs_num_inputs; |
| uint32_t tcs_num_patches; |
| |
| LLVMValueRef vertexptr; /* GFX10 only */ |
| }; |
| |
| struct radv_shader_output_values { |
| LLVMValueRef values[4]; |
| unsigned slot_name; |
| unsigned slot_index; |
| unsigned usage_mask; |
| }; |
| |
| enum radeon_llvm_calling_convention { |
| RADEON_LLVM_AMDGPU_VS = 87, |
| RADEON_LLVM_AMDGPU_GS = 88, |
| RADEON_LLVM_AMDGPU_PS = 89, |
| RADEON_LLVM_AMDGPU_CS = 90, |
| RADEON_LLVM_AMDGPU_HS = 93, |
| }; |
| |
| static inline struct radv_shader_context * |
| radv_shader_context_from_abi(struct ac_shader_abi *abi) |
| { |
| struct radv_shader_context *ctx = NULL; |
| return container_of(abi, ctx, abi); |
| } |
| |
| static LLVMValueRef get_rel_patch_id(struct radv_shader_context *ctx) |
| { |
| switch (ctx->stage) { |
| case MESA_SHADER_TESS_CTRL: |
| return ac_unpack_param(&ctx->ac, ctx->abi.tcs_rel_ids, 0, 8); |
| case MESA_SHADER_TESS_EVAL: |
| return ctx->tes_rel_patch_id; |
| break; |
| default: |
| unreachable("Illegal stage"); |
| } |
| } |
| |
| static unsigned |
| get_tcs_num_patches(struct radv_shader_context *ctx) |
| { |
| unsigned num_tcs_input_cp = ctx->options->key.tcs.input_vertices; |
| unsigned num_tcs_output_cp = ctx->shader->info.tess.tcs_vertices_out; |
| uint32_t input_vertex_size = ctx->tcs_num_inputs * 16; |
| uint32_t input_patch_size = ctx->options->key.tcs.input_vertices * input_vertex_size; |
| uint32_t num_tcs_outputs = util_last_bit64(ctx->shader_info->tcs.outputs_written); |
| uint32_t num_tcs_patch_outputs = util_last_bit64(ctx->shader_info->tcs.patch_outputs_written); |
| uint32_t output_vertex_size = num_tcs_outputs * 16; |
| uint32_t pervertex_output_patch_size = ctx->shader->info.tess.tcs_vertices_out * output_vertex_size; |
| uint32_t output_patch_size = pervertex_output_patch_size + num_tcs_patch_outputs * 16; |
| unsigned num_patches; |
| unsigned hardware_lds_size; |
| |
| /* Ensure that we only need one wave per SIMD so we don't need to check |
| * resource usage. Also ensures that the number of tcs in and out |
| * vertices per threadgroup are at most 256. |
| */ |
| num_patches = 64 / MAX2(num_tcs_input_cp, num_tcs_output_cp) * 4; |
| /* Make sure that the data fits in LDS. This assumes the shaders only |
| * use LDS for the inputs and outputs. |
| */ |
| hardware_lds_size = 32768; |
| |
| /* Looks like STONEY hangs if we use more than 32 KiB LDS in a single |
| * threadgroup, even though there is more than 32 KiB LDS. |
| * |
| * Test: dEQP-VK.tessellation.shader_input_output.barrier |
| */ |
| if (ctx->options->chip_class >= GFX7 && ctx->options->family != CHIP_STONEY) |
| hardware_lds_size = 65536; |
| |
| num_patches = MIN2(num_patches, hardware_lds_size / (input_patch_size + output_patch_size)); |
| /* Make sure the output data fits in the offchip buffer */ |
| num_patches = MIN2(num_patches, (ctx->options->tess_offchip_block_dw_size * 4) / output_patch_size); |
| /* Not necessary for correctness, but improves performance. The |
| * specific value is taken from the proprietary driver. |
| */ |
| num_patches = MIN2(num_patches, 40); |
| |
| /* GFX6 bug workaround - limit LS-HS threadgroups to only one wave. */ |
| if (ctx->options->chip_class == GFX6) { |
| unsigned one_wave = ctx->options->wave_size / MAX2(num_tcs_input_cp, num_tcs_output_cp); |
| num_patches = MIN2(num_patches, one_wave); |
| } |
| return num_patches; |
| } |
| |
| static unsigned |
| calculate_tess_lds_size(struct radv_shader_context *ctx) |
| { |
| unsigned num_tcs_input_cp = ctx->options->key.tcs.input_vertices; |
| unsigned num_tcs_output_cp; |
| unsigned num_tcs_outputs, num_tcs_patch_outputs; |
| unsigned input_vertex_size, output_vertex_size; |
| unsigned input_patch_size, output_patch_size; |
| unsigned pervertex_output_patch_size; |
| unsigned output_patch0_offset; |
| unsigned num_patches; |
| unsigned lds_size; |
| |
| num_tcs_output_cp = ctx->shader->info.tess.tcs_vertices_out; |
| num_tcs_outputs = util_last_bit64(ctx->shader_info->tcs.outputs_written); |
| num_tcs_patch_outputs = util_last_bit64(ctx->shader_info->tcs.patch_outputs_written); |
| |
| input_vertex_size = ctx->tcs_num_inputs * 16; |
| output_vertex_size = num_tcs_outputs * 16; |
| |
| input_patch_size = num_tcs_input_cp * input_vertex_size; |
| |
| pervertex_output_patch_size = num_tcs_output_cp * output_vertex_size; |
| output_patch_size = pervertex_output_patch_size + num_tcs_patch_outputs * 16; |
| |
| num_patches = ctx->tcs_num_patches; |
| output_patch0_offset = input_patch_size * num_patches; |
| |
| lds_size = output_patch0_offset + output_patch_size * num_patches; |
| return lds_size; |
| } |
| |
| /* Tessellation shaders pass outputs to the next shader using LDS. |
| * |
| * LS outputs = TCS inputs |
| * TCS outputs = TES inputs |
| * |
| * The LDS layout is: |
| * - TCS inputs for patch 0 |
| * - TCS inputs for patch 1 |
| * - TCS inputs for patch 2 = get_tcs_in_current_patch_offset (if RelPatchID==2) |
| * - ... |
| * - TCS outputs for patch 0 = get_tcs_out_patch0_offset |
| * - Per-patch TCS outputs for patch 0 = get_tcs_out_patch0_patch_data_offset |
| * - TCS outputs for patch 1 |
| * - Per-patch TCS outputs for patch 1 |
| * - TCS outputs for patch 2 = get_tcs_out_current_patch_offset (if RelPatchID==2) |
| * - Per-patch TCS outputs for patch 2 = get_tcs_out_current_patch_data_offset (if RelPatchID==2) |
| * - ... |
| * |
| * All three shaders VS(LS), TCS, TES share the same LDS space. |
| */ |
| static LLVMValueRef |
| get_tcs_in_patch_stride(struct radv_shader_context *ctx) |
| { |
| assert (ctx->stage == MESA_SHADER_TESS_CTRL); |
| uint32_t input_vertex_size = ctx->tcs_num_inputs * 16; |
| uint32_t input_patch_size = ctx->options->key.tcs.input_vertices * input_vertex_size; |
| |
| input_patch_size /= 4; |
| return LLVMConstInt(ctx->ac.i32, input_patch_size, false); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_patch_stride(struct radv_shader_context *ctx) |
| { |
| uint32_t num_tcs_outputs = util_last_bit64(ctx->shader_info->tcs.outputs_written); |
| uint32_t num_tcs_patch_outputs = util_last_bit64(ctx->shader_info->tcs.patch_outputs_written); |
| uint32_t output_vertex_size = num_tcs_outputs * 16; |
| uint32_t pervertex_output_patch_size = ctx->shader->info.tess.tcs_vertices_out * output_vertex_size; |
| uint32_t output_patch_size = pervertex_output_patch_size + num_tcs_patch_outputs * 16; |
| output_patch_size /= 4; |
| return LLVMConstInt(ctx->ac.i32, output_patch_size, false); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_vertex_stride(struct radv_shader_context *ctx) |
| { |
| uint32_t num_tcs_outputs = util_last_bit64(ctx->shader_info->tcs.outputs_written); |
| uint32_t output_vertex_size = num_tcs_outputs * 16; |
| output_vertex_size /= 4; |
| return LLVMConstInt(ctx->ac.i32, output_vertex_size, false); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_patch0_offset(struct radv_shader_context *ctx) |
| { |
| assert (ctx->stage == MESA_SHADER_TESS_CTRL); |
| uint32_t input_vertex_size = ctx->tcs_num_inputs * 16; |
| uint32_t input_patch_size = ctx->options->key.tcs.input_vertices * input_vertex_size; |
| uint32_t output_patch0_offset = input_patch_size; |
| unsigned num_patches = ctx->tcs_num_patches; |
| |
| output_patch0_offset *= num_patches; |
| output_patch0_offset /= 4; |
| return LLVMConstInt(ctx->ac.i32, output_patch0_offset, false); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_patch0_patch_data_offset(struct radv_shader_context *ctx) |
| { |
| assert (ctx->stage == MESA_SHADER_TESS_CTRL); |
| uint32_t input_vertex_size = ctx->tcs_num_inputs * 16; |
| uint32_t input_patch_size = ctx->options->key.tcs.input_vertices * input_vertex_size; |
| uint32_t output_patch0_offset = input_patch_size; |
| |
| uint32_t num_tcs_outputs = util_last_bit64(ctx->shader_info->tcs.outputs_written); |
| uint32_t output_vertex_size = num_tcs_outputs * 16; |
| uint32_t pervertex_output_patch_size = ctx->shader->info.tess.tcs_vertices_out * output_vertex_size; |
| unsigned num_patches = ctx->tcs_num_patches; |
| |
| output_patch0_offset *= num_patches; |
| output_patch0_offset += pervertex_output_patch_size; |
| output_patch0_offset /= 4; |
| return LLVMConstInt(ctx->ac.i32, output_patch0_offset, false); |
| } |
| |
| static LLVMValueRef |
| get_tcs_in_current_patch_offset(struct radv_shader_context *ctx) |
| { |
| LLVMValueRef patch_stride = get_tcs_in_patch_stride(ctx); |
| LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); |
| |
| return LLVMBuildMul(ctx->ac.builder, patch_stride, rel_patch_id, ""); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_current_patch_offset(struct radv_shader_context *ctx) |
| { |
| LLVMValueRef patch0_offset = get_tcs_out_patch0_offset(ctx); |
| LLVMValueRef patch_stride = get_tcs_out_patch_stride(ctx); |
| LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); |
| |
| return ac_build_imad(&ctx->ac, patch_stride, rel_patch_id, |
| patch0_offset); |
| } |
| |
| static LLVMValueRef |
| get_tcs_out_current_patch_data_offset(struct radv_shader_context *ctx) |
| { |
| LLVMValueRef patch0_patch_data_offset = |
| get_tcs_out_patch0_patch_data_offset(ctx); |
| LLVMValueRef patch_stride = get_tcs_out_patch_stride(ctx); |
| LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); |
| |
| return ac_build_imad(&ctx->ac, patch_stride, rel_patch_id, |
| patch0_patch_data_offset); |
| } |
| |
| #define MAX_ARGS 64 |
| struct arg_info { |
| LLVMTypeRef types[MAX_ARGS]; |
| LLVMValueRef *assign[MAX_ARGS]; |
| uint8_t count; |
| uint8_t sgpr_count; |
| uint8_t num_sgprs_used; |
| uint8_t num_vgprs_used; |
| }; |
| |
| enum ac_arg_regfile { |
| ARG_SGPR, |
| ARG_VGPR, |
| }; |
| |
| static void |
| add_arg(struct arg_info *info, enum ac_arg_regfile regfile, LLVMTypeRef type, |
| LLVMValueRef *param_ptr) |
| { |
| assert(info->count < MAX_ARGS); |
| |
| info->assign[info->count] = param_ptr; |
| info->types[info->count] = type; |
| info->count++; |
| |
| if (regfile == ARG_SGPR) { |
| info->num_sgprs_used += ac_get_type_size(type) / 4; |
| info->sgpr_count++; |
| } else { |
| assert(regfile == ARG_VGPR); |
| info->num_vgprs_used += ac_get_type_size(type) / 4; |
| } |
| } |
| |
| static void assign_arguments(LLVMValueRef main_function, |
| struct arg_info *info) |
| { |
| unsigned i; |
| for (i = 0; i < info->count; i++) { |
| if (info->assign[i]) |
| *info->assign[i] = LLVMGetParam(main_function, i); |
| } |
| } |
| |
| static LLVMValueRef |
| create_llvm_function(LLVMContextRef ctx, LLVMModuleRef module, |
| LLVMBuilderRef builder, LLVMTypeRef *return_types, |
| unsigned num_return_elems, |
| struct arg_info *args, |
| unsigned max_workgroup_size, |
| const struct radv_nir_compiler_options *options) |
| { |
| LLVMTypeRef main_function_type, ret_type; |
| LLVMBasicBlockRef main_function_body; |
| |
| if (num_return_elems) |
| ret_type = LLVMStructTypeInContext(ctx, return_types, |
| num_return_elems, true); |
| else |
| ret_type = LLVMVoidTypeInContext(ctx); |
| |
| /* Setup the function */ |
| main_function_type = |
| LLVMFunctionType(ret_type, args->types, args->count, 0); |
| LLVMValueRef main_function = |
| LLVMAddFunction(module, "main", main_function_type); |
| main_function_body = |
| LLVMAppendBasicBlockInContext(ctx, main_function, "main_body"); |
| LLVMPositionBuilderAtEnd(builder, main_function_body); |
| |
| LLVMSetFunctionCallConv(main_function, RADEON_LLVM_AMDGPU_CS); |
| for (unsigned i = 0; i < args->sgpr_count; ++i) { |
| LLVMValueRef P = LLVMGetParam(main_function, i); |
| |
| ac_add_function_attr(ctx, main_function, i + 1, AC_FUNC_ATTR_INREG); |
| |
| if (LLVMGetTypeKind(LLVMTypeOf(P)) == LLVMPointerTypeKind) { |
| ac_add_function_attr(ctx, main_function, i + 1, AC_FUNC_ATTR_NOALIAS); |
| ac_add_attr_dereferenceable(P, UINT64_MAX); |
| } |
| } |
| |
| if (options->address32_hi) { |
| ac_llvm_add_target_dep_function_attr(main_function, |
| "amdgpu-32bit-address-high-bits", |
| options->address32_hi); |
| } |
| |
| ac_llvm_set_workgroup_size(main_function, max_workgroup_size); |
| |
| if (options->unsafe_math) { |
| /* These were copied from some LLVM test. */ |
| LLVMAddTargetDependentFunctionAttr(main_function, |
| "less-precise-fpmad", |
| "true"); |
| LLVMAddTargetDependentFunctionAttr(main_function, |
| "no-infs-fp-math", |
| "true"); |
| LLVMAddTargetDependentFunctionAttr(main_function, |
| "no-nans-fp-math", |
| "true"); |
| LLVMAddTargetDependentFunctionAttr(main_function, |
| "unsafe-fp-math", |
| "true"); |
| LLVMAddTargetDependentFunctionAttr(main_function, |
| "no-signed-zeros-fp-math", |
| "true"); |
| } |
| return main_function; |
| } |
| |
| |
| static void |
| set_loc(struct radv_userdata_info *ud_info, uint8_t *sgpr_idx, |
| uint8_t num_sgprs) |
| { |
| ud_info->sgpr_idx = *sgpr_idx; |
| ud_info->num_sgprs = num_sgprs; |
| *sgpr_idx += num_sgprs; |
| } |
| |
| static void |
| set_loc_shader(struct radv_shader_context *ctx, int idx, uint8_t *sgpr_idx, |
| uint8_t num_sgprs) |
| { |
| struct radv_userdata_info *ud_info = |
| &ctx->shader_info->user_sgprs_locs.shader_data[idx]; |
| assert(ud_info); |
| |
| set_loc(ud_info, sgpr_idx, num_sgprs); |
| } |
| |
| static void |
| set_loc_shader_ptr(struct radv_shader_context *ctx, int idx, uint8_t *sgpr_idx) |
| { |
| bool use_32bit_pointers = idx != AC_UD_SCRATCH_RING_OFFSETS; |
| |
| set_loc_shader(ctx, idx, sgpr_idx, use_32bit_pointers ? 1 : 2); |
| } |
| |
| static void |
| set_loc_desc(struct radv_shader_context *ctx, int idx, uint8_t *sgpr_idx) |
| { |
| struct radv_userdata_locations *locs = |
| &ctx->shader_info->user_sgprs_locs; |
| struct radv_userdata_info *ud_info = &locs->descriptor_sets[idx]; |
| assert(ud_info); |
| |
| set_loc(ud_info, sgpr_idx, 1); |
| |
| locs->descriptor_sets_enabled |= 1 << idx; |
| } |
| |
| struct user_sgpr_info { |
| bool need_ring_offsets; |
| bool indirect_all_descriptor_sets; |
| uint8_t remaining_sgprs; |
| }; |
| |
| static bool needs_view_index_sgpr(struct radv_shader_context *ctx, |
| gl_shader_stage stage) |
| { |
| switch (stage) { |
| case MESA_SHADER_VERTEX: |
| if (ctx->shader_info->needs_multiview_view_index || |
| (!ctx->options->key.vs_common_out.as_es && !ctx->options->key.vs_common_out.as_ls && ctx->options->key.has_multiview_view_index)) |
| return true; |
| break; |
| case MESA_SHADER_TESS_EVAL: |
| if (ctx->shader_info->needs_multiview_view_index || (!ctx->options->key.vs_common_out.as_es && ctx->options->key.has_multiview_view_index)) |
| return true; |
| break; |
| case MESA_SHADER_GEOMETRY: |
| case MESA_SHADER_TESS_CTRL: |
| if (ctx->shader_info->needs_multiview_view_index) |
| return true; |
| break; |
| default: |
| break; |
| } |
| return false; |
| } |
| |
| static uint8_t |
| count_vs_user_sgprs(struct radv_shader_context *ctx) |
| { |
| uint8_t count = 0; |
| |
| if (ctx->shader_info->vs.has_vertex_buffers) |
| count++; |
| count += ctx->shader_info->vs.needs_draw_id ? 3 : 2; |
| |
| return count; |
| } |
| |
| static void allocate_inline_push_consts(struct radv_shader_context *ctx, |
| struct user_sgpr_info *user_sgpr_info) |
| { |
| uint8_t remaining_sgprs = user_sgpr_info->remaining_sgprs; |
| |
| /* Only supported if shaders use push constants. */ |
| if (ctx->shader_info->min_push_constant_used == UINT8_MAX) |
| return; |
| |
| /* Only supported if shaders don't have indirect push constants. */ |
| if (ctx->shader_info->has_indirect_push_constants) |
| return; |
| |
| /* Only supported for 32-bit push constants. */ |
| if (!ctx->shader_info->has_only_32bit_push_constants) |
| return; |
| |
| uint8_t num_push_consts = |
| (ctx->shader_info->max_push_constant_used - |
| ctx->shader_info->min_push_constant_used) / 4; |
| |
| /* Check if the number of user SGPRs is large enough. */ |
| if (num_push_consts < remaining_sgprs) { |
| ctx->shader_info->num_inline_push_consts = num_push_consts; |
| } else { |
| ctx->shader_info->num_inline_push_consts = remaining_sgprs; |
| } |
| |
| /* Clamp to the maximum number of allowed inlined push constants. */ |
| if (ctx->shader_info->num_inline_push_consts > AC_MAX_INLINE_PUSH_CONSTS) |
| ctx->shader_info->num_inline_push_consts = AC_MAX_INLINE_PUSH_CONSTS; |
| |
| if (ctx->shader_info->num_inline_push_consts == num_push_consts && |
| !ctx->shader_info->loads_dynamic_offsets) { |
| /* Disable the default push constants path if all constants are |
| * inlined and if shaders don't use dynamic descriptors. |
| */ |
| ctx->shader_info->loads_push_constants = false; |
| } |
| |
| ctx->shader_info->base_inline_push_consts = |
| ctx->shader_info->min_push_constant_used / 4; |
| } |
| |
| static void allocate_user_sgprs(struct radv_shader_context *ctx, |
| gl_shader_stage stage, |
| bool has_previous_stage, |
| gl_shader_stage previous_stage, |
| bool needs_view_index, |
| struct user_sgpr_info *user_sgpr_info) |
| { |
| uint8_t user_sgpr_count = 0; |
| |
| memset(user_sgpr_info, 0, sizeof(struct user_sgpr_info)); |
| |
| /* until we sort out scratch/global buffers always assign ring offsets for gs/vs/es */ |
| if (stage == MESA_SHADER_GEOMETRY || |
| stage == MESA_SHADER_VERTEX || |
| stage == MESA_SHADER_TESS_CTRL || |
| stage == MESA_SHADER_TESS_EVAL || |
| ctx->is_gs_copy_shader) |
| user_sgpr_info->need_ring_offsets = true; |
| |
| if (stage == MESA_SHADER_FRAGMENT && |
| ctx->shader_info->ps.needs_sample_positions) |
| user_sgpr_info->need_ring_offsets = true; |
| |
| /* 2 user sgprs will nearly always be allocated for scratch/rings */ |
| if (ctx->options->supports_spill || user_sgpr_info->need_ring_offsets) { |
| user_sgpr_count += 2; |
| } |
| |
| switch (stage) { |
| case MESA_SHADER_COMPUTE: |
| if (ctx->shader_info->cs.uses_grid_size) |
| user_sgpr_count += 3; |
| break; |
| case MESA_SHADER_FRAGMENT: |
| user_sgpr_count += ctx->shader_info->ps.needs_sample_positions; |
| break; |
| case MESA_SHADER_VERTEX: |
| if (!ctx->is_gs_copy_shader) |
| user_sgpr_count += count_vs_user_sgprs(ctx); |
| break; |
| case MESA_SHADER_TESS_CTRL: |
| if (has_previous_stage) { |
| if (previous_stage == MESA_SHADER_VERTEX) |
| user_sgpr_count += count_vs_user_sgprs(ctx); |
| } |
| break; |
| case MESA_SHADER_TESS_EVAL: |
| break; |
| case MESA_SHADER_GEOMETRY: |
| if (has_previous_stage) { |
| if (previous_stage == MESA_SHADER_VERTEX) { |
| user_sgpr_count += count_vs_user_sgprs(ctx); |
| } |
| } |
| break; |
| default: |
| break; |
| } |
| |
| if (needs_view_index) |
| user_sgpr_count++; |
| |
| if (ctx->shader_info->loads_push_constants) |
| user_sgpr_count++; |
| |
| if (ctx->shader_info->so.num_outputs) |
| user_sgpr_count++; |
| |
| uint32_t available_sgprs = ctx->options->chip_class >= GFX9 && stage != MESA_SHADER_COMPUTE ? 32 : 16; |
| uint32_t remaining_sgprs = available_sgprs - user_sgpr_count; |
| uint32_t num_desc_set = |
| util_bitcount(ctx->shader_info->desc_set_used_mask); |
| |
| if (remaining_sgprs < num_desc_set) { |
| user_sgpr_info->indirect_all_descriptor_sets = true; |
| user_sgpr_info->remaining_sgprs = remaining_sgprs - 1; |
| } else { |
| user_sgpr_info->remaining_sgprs = remaining_sgprs - num_desc_set; |
| } |
| |
| allocate_inline_push_consts(ctx, user_sgpr_info); |
| } |
| |
| static void |
| declare_global_input_sgprs(struct radv_shader_context *ctx, |
| const struct user_sgpr_info *user_sgpr_info, |
| struct arg_info *args, |
| LLVMValueRef *desc_sets) |
| { |
| LLVMTypeRef type = ac_array_in_const32_addr_space(ctx->ac.i8); |
| |
| /* 1 for each descriptor set */ |
| if (!user_sgpr_info->indirect_all_descriptor_sets) { |
| uint32_t mask = ctx->shader_info->desc_set_used_mask; |
| |
| while (mask) { |
| int i = u_bit_scan(&mask); |
| |
| add_arg(args, ARG_SGPR, type, &ctx->descriptor_sets[i]); |
| } |
| } else { |
| add_arg(args, ARG_SGPR, ac_array_in_const32_addr_space(type), |
| desc_sets); |
| } |
| |
| if (ctx->shader_info->loads_push_constants) { |
| /* 1 for push constants and dynamic descriptors */ |
| add_arg(args, ARG_SGPR, type, &ctx->abi.push_constants); |
| } |
| |
| for (unsigned i = 0; i < ctx->shader_info->num_inline_push_consts; i++) { |
| add_arg(args, ARG_SGPR, ctx->ac.i32, |
| &ctx->abi.inline_push_consts[i]); |
| } |
| ctx->abi.num_inline_push_consts = ctx->shader_info->num_inline_push_consts; |
| ctx->abi.base_inline_push_consts = ctx->shader_info->base_inline_push_consts; |
| |
| if (ctx->shader_info->so.num_outputs) { |
| add_arg(args, ARG_SGPR, |
| ac_array_in_const32_addr_space(ctx->ac.v4i32), |
| &ctx->streamout_buffers); |
| } |
| } |
| |
| static void |
| declare_vs_specific_input_sgprs(struct radv_shader_context *ctx, |
| gl_shader_stage stage, |
| bool has_previous_stage, |
| gl_shader_stage previous_stage, |
| struct arg_info *args) |
| { |
| if (!ctx->is_gs_copy_shader && |
| (stage == MESA_SHADER_VERTEX || |
| (has_previous_stage && previous_stage == MESA_SHADER_VERTEX))) { |
| if (ctx->shader_info->vs.has_vertex_buffers) { |
| add_arg(args, ARG_SGPR, |
| ac_array_in_const32_addr_space(ctx->ac.v4i32), |
| &ctx->vertex_buffers); |
| } |
| add_arg(args, ARG_SGPR, ctx->ac.i32, &ctx->abi.base_vertex); |
| add_arg(args, ARG_SGPR, ctx->ac.i32, &ctx->abi.start_instance); |
| if (ctx->shader_info->vs.needs_draw_id) { |
| add_arg(args, ARG_SGPR, ctx->ac.i32, &ctx->abi.draw_id); |
| } |
| } |
| } |
| |
| static void |
| declare_vs_input_vgprs(struct radv_shader_context *ctx, struct arg_info *args) |
| { |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->abi.vertex_id); |
| if (!ctx->is_gs_copy_shader) { |
| if (ctx->options->key.vs_common_out.as_ls) { |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->rel_auto_id); |
| if (ctx->ac.chip_class >= GFX10) { |
| add_arg(args, ARG_VGPR, ctx->ac.i32, NULL); /* user vgpr */ |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->abi.instance_id); |
| } else { |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->abi.instance_id); |
| add_arg(args, ARG_VGPR, ctx->ac.i32, NULL); /* unused */ |
| } |
| } else { |
| if (ctx->ac.chip_class >= GFX10) { |
| if (ctx->options->key.vs_common_out.as_ngg) { |
| add_arg(args, ARG_VGPR, ctx->ac.i32, NULL); /* user vgpr */ |
| add_arg(args, ARG_VGPR, ctx->ac.i32, NULL); /* user vgpr */ |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->abi.instance_id); |
| } else { |
| add_arg(args, ARG_VGPR, ctx->ac.i32, NULL); /* unused */ |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->vs_prim_id); |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->abi.instance_id); |
| } |
| } else { |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->abi.instance_id); |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->vs_prim_id); |
| add_arg(args, ARG_VGPR, ctx->ac.i32, NULL); /* unused */ |
| } |
| } |
| } |
| } |
| |
| static void |
| declare_streamout_sgprs(struct radv_shader_context *ctx, gl_shader_stage stage, |
| struct arg_info *args) |
| { |
| int i; |
| |
| if (ctx->options->use_ngg_streamout) |
| return; |
| |
| /* Streamout SGPRs. */ |
| if (ctx->shader_info->so.num_outputs) { |
| assert(stage == MESA_SHADER_VERTEX || |
| stage == MESA_SHADER_TESS_EVAL); |
| |
| if (stage != MESA_SHADER_TESS_EVAL) { |
| add_arg(args, ARG_SGPR, ctx->ac.i32, &ctx->streamout_config); |
| } else { |
| args->assign[args->count - 1] = &ctx->streamout_config; |
| args->types[args->count - 1] = ctx->ac.i32; |
| } |
| |
| add_arg(args, ARG_SGPR, ctx->ac.i32, &ctx->streamout_write_idx); |
| } |
| |
| /* A streamout buffer offset is loaded if the stride is non-zero. */ |
| for (i = 0; i < 4; i++) { |
| if (!ctx->shader_info->so.strides[i]) |
| continue; |
| |
| add_arg(args, ARG_SGPR, ctx->ac.i32, &ctx->streamout_offset[i]); |
| } |
| } |
| |
| static void |
| declare_tes_input_vgprs(struct radv_shader_context *ctx, struct arg_info *args) |
| { |
| add_arg(args, ARG_VGPR, ctx->ac.f32, &ctx->tes_u); |
| add_arg(args, ARG_VGPR, ctx->ac.f32, &ctx->tes_v); |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->tes_rel_patch_id); |
| add_arg(args, ARG_VGPR, ctx->ac.i32, &ctx->abi.tes_patch_id); |
| } |
| |
| static void |
| set_global_input_locs(struct radv_shader_context *ctx, |
| const struct user_sgpr_info *user_sgpr_info, |
| LLVMValueRef desc_sets, uint8_t *user_sgpr_idx) |
| { |
| uint32_t mask = ctx->shader_info->desc_set_used_mask; |
| |
| if (!user_sgpr_info->indirect_all_descriptor_sets) { |
| while (mask) { |
| int i = u_bit_scan(&mask); |
| |
| set_loc_desc(ctx, i, user_sgpr_idx); |
| } |
| } else { |
| set_loc_shader_ptr(ctx, AC_UD_INDIRECT_DESCRIPTOR_SETS, |
| user_sgpr_idx); |
| |
| while (mask) { |
| int i = u_bit_scan(&mask); |
| |
| ctx->descriptor_sets[i] = |
| ac_build_load_to_sgpr(&ctx->ac, desc_sets, |
| LLVMConstInt(ctx->ac.i32, i, false)); |
| |
| } |
| |
| ctx->shader_info->need_indirect_descriptor_sets = true; |
| } |
| |
| if (ctx->shader_info->loads_push_constants) { |
| set_loc_shader_ptr(ctx, AC_UD_PUSH_CONSTANTS, user_sgpr_idx); |
| } |
| |
| if (ctx->shader_info->num_inline_push_consts) { |
| set_loc_shader(ctx, AC_UD_INLINE_PUSH_CONSTANTS, user_sgpr_idx, |
| ctx->shader_info->num_inline_push_consts); |
| } |
| |
| if (ctx->streamout_buffers) { |
| set_loc_shader_ptr(ctx, AC_UD_STREAMOUT_BUFFERS, |
| user_sgpr_idx); |
| } |
| } |
| |
| static void |
| set_vs_specific_input_locs(struct radv_shader_context *ctx, |
| gl_shader_stage stage, bool has_previous_stage, |
| gl_shader_stage previous_stage, |
| uint8_t *user_sgpr_idx) |
| { |
| if (!ctx->is_gs_copy_shader && |
| (stage == MESA_SHADER_VERTEX || |
| (has_previous_stage && previous_stage == MESA_SHADER_VERTEX))) { |
| if (ctx->shader_info->vs.has_vertex_buffers) { |
| set_loc_shader_ptr(ctx, AC_UD_VS_VERTEX_BUFFERS, |
| user_sgpr_idx); |
| } |
| |
| unsigned vs_num = 2; |
| if (ctx->shader_info->vs.needs_draw_id) |
| vs_num++; |
| |
| set_loc_shader(ctx, AC_UD_VS_BASE_VERTEX_START_INSTANCE, |
| user_sgpr_idx, vs_num); |
| } |
| } |
| |
| static void set_llvm_calling_convention(LLVMValueRef func, |
| gl_shader_stage stage) |
| { |
| enum radeon_llvm_calling_convention calling_conv; |
| |
| switch (stage) { |
| case MESA_SHADER_VERTEX: |
| case MESA_SHADER_TESS_EVAL: |
| calling_conv = RADEON_LLVM_AMDGPU_VS; |
| break; |
| case MESA_SHADER_GEOMETRY: |
| calling_conv = RADEON_LLVM_AMDGPU_GS; |
| break; |
| case MESA_SHADER_TESS_CTRL: |
| calling_conv = RADEON_LLVM_AMDGPU_HS; |
| break; |
| case MESA_SHADER_FRAGMENT: |
| calling_conv = RADEON_LLVM_AMDGPU_PS; |
| break; |
| case MESA_SHADER_COMPUTE: |
| calling_conv = RADEON_LLVM_AMDGPU_CS; |
| break; |
| default: |
| unreachable("Unhandle shader type"); |
| } |
| |
| LLVMSetFunctionCallConv(func, calling_conv); |
| } |
| |
| /* Returns whether the stage is a stage that can be directly before the GS */ |
| static bool is_pre_gs_stage(gl_shader_stage stage) |
| { |
| return stage == MESA_SHADER_VERTEX || stage == MESA_SHADER_TESS_EVAL; |
| } |
| |
| static void create_function(struct radv_shader_context *ctx, |
| gl_shader_stage stage, |
| bool has_previous_stage, |
| gl_shader_stage previous_stage) |
| { |
| uint8_t user_sgpr_idx; |
| struct user_sgpr_info user_sgpr_info; |
| struct arg_info args = {}; |
| LLVMValueRef desc_sets; |
| bool needs_view_index = needs_view_index_sgpr(ctx, stage); |
| |
| if (ctx->ac.chip_class >= GFX10) { |
| if (is_pre_gs_stage(stage) && ctx->options->key.vs_common_out.as_ngg) { |
| /* On GFX10, VS is merged into GS for NGG. */ |
| previous_stage = stage; |
| stage = MESA_SHADER_GEOMETRY; |
| has_previous_stage = true; |
| } |
| } |
| |
| allocate_user_sgprs(ctx, stage, has_previous_stage, |
| previous_stage, needs_view_index, &user_sgpr_info); |
| |
| if (user_sgpr_info.need_ring_offsets && !ctx->options->supports_spill) { |
| add_arg(&args, ARG_SGPR, ac_array_in_const_addr_space(ctx->ac.v4i32), |
| &ctx->ring_offsets); |
| } |
| |
| switch (stage) { |
| case MESA_SHADER_COMPUTE: |
| declare_global_input_sgprs(ctx, &user_sgpr_info, &args, |
| &desc_sets); |
| |
| if (ctx->shader_info->cs.uses_grid_size) { |
| add_arg(&args, ARG_SGPR, ctx->ac.v3i32, |
| &ctx->abi.num_work_groups); |
| } |
| |
| for (int i = 0; i < 3; i++) { |
| ctx->abi.workgroup_ids[i] = NULL; |
| if (ctx->shader_info->cs.uses_block_id[i]) { |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->abi.workgroup_ids[i]); |
| } |
| } |
| |
| if (ctx->shader_info->cs.uses_local_invocation_idx) |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, &ctx->abi.tg_size); |
| add_arg(&args, ARG_VGPR, ctx->ac.v3i32, |
| &ctx->abi.local_invocation_ids); |
| break; |
| case MESA_SHADER_VERTEX: |
| declare_global_input_sgprs(ctx, &user_sgpr_info, &args, |
| &desc_sets); |
| |
| declare_vs_specific_input_sgprs(ctx, stage, has_previous_stage, |
| previous_stage, &args); |
| |
| if (needs_view_index) |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->abi.view_index); |
| if (ctx->options->key.vs_common_out.as_es) { |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->es2gs_offset); |
| } else if (ctx->options->key.vs_common_out.as_ls) { |
| /* no extra parameters */ |
| } else { |
| declare_streamout_sgprs(ctx, stage, &args); |
| } |
| |
| declare_vs_input_vgprs(ctx, &args); |
| break; |
| case MESA_SHADER_TESS_CTRL: |
| if (has_previous_stage) { |
| // First 6 system regs |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, &ctx->oc_lds); |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->merged_wave_info); |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->tess_factor_offset); |
| |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, NULL); // scratch offset |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, NULL); // unknown |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, NULL); // unknown |
| |
| declare_global_input_sgprs(ctx, &user_sgpr_info, &args, |
| &desc_sets); |
| |
| declare_vs_specific_input_sgprs(ctx, stage, |
| has_previous_stage, |
| previous_stage, &args); |
| |
| if (needs_view_index) |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->abi.view_index); |
| |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->abi.tcs_patch_id); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->abi.tcs_rel_ids); |
| |
| declare_vs_input_vgprs(ctx, &args); |
| } else { |
| declare_global_input_sgprs(ctx, &user_sgpr_info, &args, |
| &desc_sets); |
| |
| if (needs_view_index) |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->abi.view_index); |
| |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, &ctx->oc_lds); |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->tess_factor_offset); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->abi.tcs_patch_id); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->abi.tcs_rel_ids); |
| } |
| break; |
| case MESA_SHADER_TESS_EVAL: |
| declare_global_input_sgprs(ctx, &user_sgpr_info, &args, |
| &desc_sets); |
| |
| if (needs_view_index) |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->abi.view_index); |
| |
| if (ctx->options->key.vs_common_out.as_es) { |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, &ctx->oc_lds); |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, NULL); |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->es2gs_offset); |
| } else { |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, NULL); |
| declare_streamout_sgprs(ctx, stage, &args); |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, &ctx->oc_lds); |
| } |
| declare_tes_input_vgprs(ctx, &args); |
| break; |
| case MESA_SHADER_GEOMETRY: |
| if (has_previous_stage) { |
| // First 6 system regs |
| if (ctx->options->key.vs_common_out.as_ngg) { |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->gs_tg_info); |
| } else { |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->gs2vs_offset); |
| } |
| |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->merged_wave_info); |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, &ctx->oc_lds); |
| |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, NULL); // scratch offset |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, NULL); // unknown |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, NULL); // unknown |
| |
| declare_global_input_sgprs(ctx, &user_sgpr_info, &args, |
| &desc_sets); |
| |
| if (previous_stage != MESA_SHADER_TESS_EVAL) { |
| declare_vs_specific_input_sgprs(ctx, stage, |
| has_previous_stage, |
| previous_stage, |
| &args); |
| } |
| |
| if (needs_view_index) |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->abi.view_index); |
| |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->gs_vtx_offset[0]); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->gs_vtx_offset[2]); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->abi.gs_prim_id); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->abi.gs_invocation_id); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->gs_vtx_offset[4]); |
| |
| if (previous_stage == MESA_SHADER_VERTEX) { |
| declare_vs_input_vgprs(ctx, &args); |
| } else { |
| declare_tes_input_vgprs(ctx, &args); |
| } |
| } else { |
| declare_global_input_sgprs(ctx, &user_sgpr_info, &args, |
| &desc_sets); |
| |
| if (needs_view_index) |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, |
| &ctx->abi.view_index); |
| |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, &ctx->gs2vs_offset); |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, &ctx->gs_wave_id); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->gs_vtx_offset[0]); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->gs_vtx_offset[1]); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->abi.gs_prim_id); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->gs_vtx_offset[2]); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->gs_vtx_offset[3]); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->gs_vtx_offset[4]); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->gs_vtx_offset[5]); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, |
| &ctx->abi.gs_invocation_id); |
| } |
| break; |
| case MESA_SHADER_FRAGMENT: |
| declare_global_input_sgprs(ctx, &user_sgpr_info, &args, |
| &desc_sets); |
| |
| add_arg(&args, ARG_SGPR, ctx->ac.i32, &ctx->abi.prim_mask); |
| add_arg(&args, ARG_VGPR, ctx->ac.v2i32, &ctx->abi.persp_sample); |
| add_arg(&args, ARG_VGPR, ctx->ac.v2i32, &ctx->abi.persp_center); |
| add_arg(&args, ARG_VGPR, ctx->ac.v2i32, &ctx->abi.persp_centroid); |
| add_arg(&args, ARG_VGPR, ctx->ac.v3i32, NULL); /* persp pull model */ |
| add_arg(&args, ARG_VGPR, ctx->ac.v2i32, &ctx->abi.linear_sample); |
| add_arg(&args, ARG_VGPR, ctx->ac.v2i32, &ctx->abi.linear_center); |
| add_arg(&args, ARG_VGPR, ctx->ac.v2i32, &ctx->abi.linear_centroid); |
| add_arg(&args, ARG_VGPR, ctx->ac.f32, NULL); /* line stipple tex */ |
| add_arg(&args, ARG_VGPR, ctx->ac.f32, &ctx->abi.frag_pos[0]); |
| add_arg(&args, ARG_VGPR, ctx->ac.f32, &ctx->abi.frag_pos[1]); |
| add_arg(&args, ARG_VGPR, ctx->ac.f32, &ctx->abi.frag_pos[2]); |
| add_arg(&args, ARG_VGPR, ctx->ac.f32, &ctx->abi.frag_pos[3]); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, &ctx->abi.front_face); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, &ctx->abi.ancillary); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, &ctx->abi.sample_coverage); |
| add_arg(&args, ARG_VGPR, ctx->ac.i32, NULL); /* fixed pt */ |
| break; |
| default: |
| unreachable("Shader stage not implemented"); |
| } |
| |
| ctx->main_function = create_llvm_function( |
| ctx->context, ctx->ac.module, ctx->ac.builder, NULL, 0, &args, |
| ctx->max_workgroup_size, ctx->options); |
| set_llvm_calling_convention(ctx->main_function, stage); |
| |
| |
| ctx->shader_info->num_input_vgprs = 0; |
| ctx->shader_info->num_input_sgprs = ctx->options->supports_spill ? 2 : 0; |
| |
| ctx->shader_info->num_input_sgprs += args.num_sgprs_used; |
| |
| if (ctx->stage != MESA_SHADER_FRAGMENT) |
| ctx->shader_info->num_input_vgprs = args.num_vgprs_used; |
| |
| assign_arguments(ctx->main_function, &args); |
| |
| user_sgpr_idx = 0; |
| |
| if (ctx->options->supports_spill || user_sgpr_info.need_ring_offsets) { |
| set_loc_shader_ptr(ctx, AC_UD_SCRATCH_RING_OFFSETS, |
| &user_sgpr_idx); |
| if (ctx->options->supports_spill) { |
| ctx->ring_offsets = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.implicit.buffer.ptr", |
| LLVMPointerType(ctx->ac.i8, AC_ADDR_SPACE_CONST), |
| NULL, 0, AC_FUNC_ATTR_READNONE); |
| ctx->ring_offsets = LLVMBuildBitCast(ctx->ac.builder, ctx->ring_offsets, |
| ac_array_in_const_addr_space(ctx->ac.v4i32), ""); |
| } |
| } |
| |
| /* For merged shaders the user SGPRs start at 8, with 8 system SGPRs in front (including |
| * the rw_buffers at s0/s1. With user SGPR0 = s8, lets restart the count from 0 */ |
| if (has_previous_stage) |
| user_sgpr_idx = 0; |
| |
| set_global_input_locs(ctx, &user_sgpr_info, desc_sets, &user_sgpr_idx); |
| |
| switch (stage) { |
| case MESA_SHADER_COMPUTE: |
| if (ctx->shader_info->cs.uses_grid_size) { |
| set_loc_shader(ctx, AC_UD_CS_GRID_SIZE, |
| &user_sgpr_idx, 3); |
| } |
| break; |
| case MESA_SHADER_VERTEX: |
| set_vs_specific_input_locs(ctx, stage, has_previous_stage, |
| previous_stage, &user_sgpr_idx); |
| if (ctx->abi.view_index) |
| set_loc_shader(ctx, AC_UD_VIEW_INDEX, &user_sgpr_idx, 1); |
| break; |
| case MESA_SHADER_TESS_CTRL: |
| set_vs_specific_input_locs(ctx, stage, has_previous_stage, |
| previous_stage, &user_sgpr_idx); |
| if (ctx->abi.view_index) |
| set_loc_shader(ctx, AC_UD_VIEW_INDEX, &user_sgpr_idx, 1); |
| break; |
| case MESA_SHADER_TESS_EVAL: |
| if (ctx->abi.view_index) |
| set_loc_shader(ctx, AC_UD_VIEW_INDEX, &user_sgpr_idx, 1); |
| break; |
| case MESA_SHADER_GEOMETRY: |
| if (has_previous_stage) { |
| if (previous_stage == MESA_SHADER_VERTEX) |
| set_vs_specific_input_locs(ctx, stage, |
| has_previous_stage, |
| previous_stage, |
| &user_sgpr_idx); |
| } |
| if (ctx->abi.view_index) |
| set_loc_shader(ctx, AC_UD_VIEW_INDEX, &user_sgpr_idx, 1); |
| break; |
| case MESA_SHADER_FRAGMENT: |
| break; |
| default: |
| unreachable("Shader stage not implemented"); |
| } |
| |
| if (stage == MESA_SHADER_TESS_CTRL || |
| (stage == MESA_SHADER_VERTEX && ctx->options->key.vs_common_out.as_ls) || |
| /* GFX9 has the ESGS ring buffer in LDS. */ |
| (stage == MESA_SHADER_GEOMETRY && has_previous_stage)) { |
| ac_declare_lds_as_pointer(&ctx->ac); |
| } |
| |
| ctx->shader_info->num_user_sgprs = user_sgpr_idx; |
| } |
| |
| |
| static LLVMValueRef |
| radv_load_resource(struct ac_shader_abi *abi, LLVMValueRef index, |
| unsigned desc_set, unsigned binding) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| LLVMValueRef desc_ptr = ctx->descriptor_sets[desc_set]; |
| struct radv_pipeline_layout *pipeline_layout = ctx->options->layout; |
| struct radv_descriptor_set_layout *layout = pipeline_layout->set[desc_set].layout; |
| unsigned base_offset = layout->binding[binding].offset; |
| LLVMValueRef offset, stride; |
| |
| if (layout->binding[binding].type == VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC || |
| layout->binding[binding].type == VK_DESCRIPTOR_TYPE_STORAGE_BUFFER_DYNAMIC) { |
| unsigned idx = pipeline_layout->set[desc_set].dynamic_offset_start + |
| layout->binding[binding].dynamic_offset_offset; |
| desc_ptr = ctx->abi.push_constants; |
| base_offset = pipeline_layout->push_constant_size + 16 * idx; |
| stride = LLVMConstInt(ctx->ac.i32, 16, false); |
| } else |
| stride = LLVMConstInt(ctx->ac.i32, layout->binding[binding].size, false); |
| |
| offset = LLVMConstInt(ctx->ac.i32, base_offset, false); |
| |
| if (layout->binding[binding].type != VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT) { |
| offset = ac_build_imad(&ctx->ac, index, stride, offset); |
| } |
| |
| desc_ptr = LLVMBuildGEP(ctx->ac.builder, desc_ptr, &offset, 1, ""); |
| desc_ptr = ac_cast_ptr(&ctx->ac, desc_ptr, ctx->ac.v4i32); |
| LLVMSetMetadata(desc_ptr, ctx->ac.uniform_md_kind, ctx->ac.empty_md); |
| |
| if (layout->binding[binding].type == VK_DESCRIPTOR_TYPE_INLINE_UNIFORM_BLOCK_EXT) { |
| uint32_t desc_type = S_008F0C_DST_SEL_X(V_008F0C_SQ_SEL_X) | |
| S_008F0C_DST_SEL_Y(V_008F0C_SQ_SEL_Y) | |
| S_008F0C_DST_SEL_Z(V_008F0C_SQ_SEL_Z) | |
| S_008F0C_DST_SEL_W(V_008F0C_SQ_SEL_W); |
| |
| if (ctx->ac.chip_class >= GFX10) { |
| desc_type |= S_008F0C_FORMAT(V_008F0C_IMG_FORMAT_32_FLOAT) | |
| S_008F0C_OOB_SELECT(3) | |
| S_008F0C_RESOURCE_LEVEL(1); |
| } else { |
| desc_type |= S_008F0C_NUM_FORMAT(V_008F0C_BUF_NUM_FORMAT_FLOAT) | |
| S_008F0C_DATA_FORMAT(V_008F0C_BUF_DATA_FORMAT_32); |
| } |
| |
| LLVMValueRef desc_components[4] = { |
| LLVMBuildPtrToInt(ctx->ac.builder, desc_ptr, ctx->ac.intptr, ""), |
| LLVMConstInt(ctx->ac.i32, S_008F04_BASE_ADDRESS_HI(ctx->options->address32_hi), false), |
| /* High limit to support variable sizes. */ |
| LLVMConstInt(ctx->ac.i32, 0xffffffff, false), |
| LLVMConstInt(ctx->ac.i32, desc_type, false), |
| }; |
| |
| return ac_build_gather_values(&ctx->ac, desc_components, 4); |
| } |
| |
| return desc_ptr; |
| } |
| |
| |
| /* The offchip buffer layout for TCS->TES is |
| * |
| * - attribute 0 of patch 0 vertex 0 |
| * - attribute 0 of patch 0 vertex 1 |
| * - attribute 0 of patch 0 vertex 2 |
| * ... |
| * - attribute 0 of patch 1 vertex 0 |
| * - attribute 0 of patch 1 vertex 1 |
| * ... |
| * - attribute 1 of patch 0 vertex 0 |
| * - attribute 1 of patch 0 vertex 1 |
| * ... |
| * - per patch attribute 0 of patch 0 |
| * - per patch attribute 0 of patch 1 |
| * ... |
| * |
| * Note that every attribute has 4 components. |
| */ |
| static LLVMValueRef get_non_vertex_index_offset(struct radv_shader_context *ctx) |
| { |
| uint32_t num_patches = ctx->tcs_num_patches; |
| uint32_t num_tcs_outputs; |
| if (ctx->stage == MESA_SHADER_TESS_CTRL) |
| num_tcs_outputs = util_last_bit64(ctx->shader_info->tcs.outputs_written); |
| else |
| num_tcs_outputs = ctx->options->key.tes.tcs_num_outputs; |
| |
| uint32_t output_vertex_size = num_tcs_outputs * 16; |
| uint32_t pervertex_output_patch_size = ctx->shader->info.tess.tcs_vertices_out * output_vertex_size; |
| |
| return LLVMConstInt(ctx->ac.i32, pervertex_output_patch_size * num_patches, false); |
| } |
| |
| static LLVMValueRef calc_param_stride(struct radv_shader_context *ctx, |
| LLVMValueRef vertex_index) |
| { |
| LLVMValueRef param_stride; |
| if (vertex_index) |
| param_stride = LLVMConstInt(ctx->ac.i32, ctx->shader->info.tess.tcs_vertices_out * ctx->tcs_num_patches, false); |
| else |
| param_stride = LLVMConstInt(ctx->ac.i32, ctx->tcs_num_patches, false); |
| return param_stride; |
| } |
| |
| static LLVMValueRef get_tcs_tes_buffer_address(struct radv_shader_context *ctx, |
| LLVMValueRef vertex_index, |
| LLVMValueRef param_index) |
| { |
| LLVMValueRef base_addr; |
| LLVMValueRef param_stride, constant16; |
| LLVMValueRef rel_patch_id = get_rel_patch_id(ctx); |
| LLVMValueRef vertices_per_patch = LLVMConstInt(ctx->ac.i32, ctx->shader->info.tess.tcs_vertices_out, false); |
| constant16 = LLVMConstInt(ctx->ac.i32, 16, false); |
| param_stride = calc_param_stride(ctx, vertex_index); |
| if (vertex_index) { |
| base_addr = ac_build_imad(&ctx->ac, rel_patch_id, |
| vertices_per_patch, vertex_index); |
| } else { |
| base_addr = rel_patch_id; |
| } |
| |
| base_addr = LLVMBuildAdd(ctx->ac.builder, base_addr, |
| LLVMBuildMul(ctx->ac.builder, param_index, |
| param_stride, ""), ""); |
| |
| base_addr = LLVMBuildMul(ctx->ac.builder, base_addr, constant16, ""); |
| |
| if (!vertex_index) { |
| LLVMValueRef patch_data_offset = get_non_vertex_index_offset(ctx); |
| |
| base_addr = LLVMBuildAdd(ctx->ac.builder, base_addr, |
| patch_data_offset, ""); |
| } |
| return base_addr; |
| } |
| |
| static LLVMValueRef get_tcs_tes_buffer_address_params(struct radv_shader_context *ctx, |
| unsigned param, |
| unsigned const_index, |
| bool is_compact, |
| LLVMValueRef vertex_index, |
| LLVMValueRef indir_index) |
| { |
| LLVMValueRef param_index; |
| |
| if (indir_index) |
| param_index = LLVMBuildAdd(ctx->ac.builder, LLVMConstInt(ctx->ac.i32, param, false), |
| indir_index, ""); |
| else { |
| if (const_index && !is_compact) |
| param += const_index; |
| param_index = LLVMConstInt(ctx->ac.i32, param, false); |
| } |
| return get_tcs_tes_buffer_address(ctx, vertex_index, param_index); |
| } |
| |
| static LLVMValueRef |
| get_dw_address(struct radv_shader_context *ctx, |
| LLVMValueRef dw_addr, |
| unsigned param, |
| unsigned const_index, |
| bool compact_const_index, |
| LLVMValueRef vertex_index, |
| LLVMValueRef stride, |
| LLVMValueRef indir_index) |
| |
| { |
| |
| if (vertex_index) { |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| LLVMBuildMul(ctx->ac.builder, |
| vertex_index, |
| stride, ""), ""); |
| } |
| |
| if (indir_index) |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| LLVMBuildMul(ctx->ac.builder, indir_index, |
| LLVMConstInt(ctx->ac.i32, 4, false), ""), ""); |
| else if (const_index && !compact_const_index) |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| LLVMConstInt(ctx->ac.i32, const_index * 4, false), ""); |
| |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| LLVMConstInt(ctx->ac.i32, param * 4, false), ""); |
| |
| if (const_index && compact_const_index) |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| LLVMConstInt(ctx->ac.i32, const_index, false), ""); |
| return dw_addr; |
| } |
| |
| static LLVMValueRef |
| load_tcs_varyings(struct ac_shader_abi *abi, |
| LLVMTypeRef type, |
| LLVMValueRef vertex_index, |
| LLVMValueRef indir_index, |
| unsigned const_index, |
| unsigned location, |
| unsigned driver_location, |
| unsigned component, |
| unsigned num_components, |
| bool is_patch, |
| bool is_compact, |
| bool load_input) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| LLVMValueRef dw_addr, stride; |
| LLVMValueRef value[4], result; |
| unsigned param = shader_io_get_unique_index(location); |
| |
| if (load_input) { |
| uint32_t input_vertex_size = (ctx->tcs_num_inputs * 16) / 4; |
| stride = LLVMConstInt(ctx->ac.i32, input_vertex_size, false); |
| dw_addr = get_tcs_in_current_patch_offset(ctx); |
| } else { |
| if (!is_patch) { |
| stride = get_tcs_out_vertex_stride(ctx); |
| dw_addr = get_tcs_out_current_patch_offset(ctx); |
| } else { |
| dw_addr = get_tcs_out_current_patch_data_offset(ctx); |
| stride = NULL; |
| } |
| } |
| |
| dw_addr = get_dw_address(ctx, dw_addr, param, const_index, is_compact, vertex_index, stride, |
| indir_index); |
| |
| for (unsigned i = 0; i < num_components + component; i++) { |
| value[i] = ac_lds_load(&ctx->ac, dw_addr); |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| ctx->ac.i32_1, ""); |
| } |
| result = ac_build_varying_gather_values(&ctx->ac, value, num_components, component); |
| return result; |
| } |
| |
| static void |
| store_tcs_output(struct ac_shader_abi *abi, |
| const nir_variable *var, |
| LLVMValueRef vertex_index, |
| LLVMValueRef param_index, |
| unsigned const_index, |
| LLVMValueRef src, |
| unsigned writemask) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| const unsigned location = var->data.location; |
| unsigned component = var->data.location_frac; |
| const bool is_patch = var->data.patch; |
| const bool is_compact = var->data.compact; |
| LLVMValueRef dw_addr; |
| LLVMValueRef stride = NULL; |
| LLVMValueRef buf_addr = NULL; |
| unsigned param; |
| bool store_lds = true; |
| |
| if (is_patch) { |
| if (!(ctx->shader->info.patch_outputs_read & (1U << (location - VARYING_SLOT_PATCH0)))) |
| store_lds = false; |
| } else { |
| if (!(ctx->shader->info.outputs_read & (1ULL << location))) |
| store_lds = false; |
| } |
| |
| param = shader_io_get_unique_index(location); |
| if ((location == VARYING_SLOT_CLIP_DIST0 || location == VARYING_SLOT_CLIP_DIST1) && is_compact) { |
| const_index += component; |
| component = 0; |
| |
| if (const_index >= 4) { |
| const_index -= 4; |
| param++; |
| } |
| } |
| |
| if (!is_patch) { |
| stride = get_tcs_out_vertex_stride(ctx); |
| dw_addr = get_tcs_out_current_patch_offset(ctx); |
| } else { |
| dw_addr = get_tcs_out_current_patch_data_offset(ctx); |
| } |
| |
| dw_addr = get_dw_address(ctx, dw_addr, param, const_index, is_compact, vertex_index, stride, |
| param_index); |
| buf_addr = get_tcs_tes_buffer_address_params(ctx, param, const_index, is_compact, |
| vertex_index, param_index); |
| |
| bool is_tess_factor = false; |
| if (location == VARYING_SLOT_TESS_LEVEL_INNER || |
| location == VARYING_SLOT_TESS_LEVEL_OUTER) |
| is_tess_factor = true; |
| |
| unsigned base = is_compact ? const_index : 0; |
| for (unsigned chan = 0; chan < 8; chan++) { |
| if (!(writemask & (1 << chan))) |
| continue; |
| LLVMValueRef value = ac_llvm_extract_elem(&ctx->ac, src, chan - component); |
| value = ac_to_integer(&ctx->ac, value); |
| value = LLVMBuildZExtOrBitCast(ctx->ac.builder, value, ctx->ac.i32, ""); |
| |
| if (store_lds || is_tess_factor) { |
| LLVMValueRef dw_addr_chan = |
| LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| LLVMConstInt(ctx->ac.i32, chan, false), ""); |
| ac_lds_store(&ctx->ac, dw_addr_chan, value); |
| } |
| |
| if (!is_tess_factor && writemask != 0xF) |
| ac_build_buffer_store_dword(&ctx->ac, ctx->hs_ring_tess_offchip, value, 1, |
| buf_addr, ctx->oc_lds, |
| 4 * (base + chan), ac_glc, false); |
| } |
| |
| if (writemask == 0xF) { |
| ac_build_buffer_store_dword(&ctx->ac, ctx->hs_ring_tess_offchip, src, 4, |
| buf_addr, ctx->oc_lds, |
| (base * 4), ac_glc, false); |
| } |
| } |
| |
| static LLVMValueRef |
| load_tes_input(struct ac_shader_abi *abi, |
| LLVMTypeRef type, |
| LLVMValueRef vertex_index, |
| LLVMValueRef param_index, |
| unsigned const_index, |
| unsigned location, |
| unsigned driver_location, |
| unsigned component, |
| unsigned num_components, |
| bool is_patch, |
| bool is_compact, |
| bool load_input) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| LLVMValueRef buf_addr; |
| LLVMValueRef result; |
| unsigned param = shader_io_get_unique_index(location); |
| |
| if ((location == VARYING_SLOT_CLIP_DIST0 || location == VARYING_SLOT_CLIP_DIST1) && is_compact) { |
| const_index += component; |
| component = 0; |
| if (const_index >= 4) { |
| const_index -= 4; |
| param++; |
| } |
| } |
| |
| buf_addr = get_tcs_tes_buffer_address_params(ctx, param, const_index, |
| is_compact, vertex_index, param_index); |
| |
| LLVMValueRef comp_offset = LLVMConstInt(ctx->ac.i32, component * 4, false); |
| buf_addr = LLVMBuildAdd(ctx->ac.builder, buf_addr, comp_offset, ""); |
| |
| result = ac_build_buffer_load(&ctx->ac, ctx->hs_ring_tess_offchip, num_components, NULL, |
| buf_addr, ctx->oc_lds, is_compact ? (4 * const_index) : 0, ac_glc, true, false); |
| result = ac_trim_vector(&ctx->ac, result, num_components); |
| return result; |
| } |
| |
| static LLVMValueRef |
| radv_emit_fetch_64bit(struct radv_shader_context *ctx, |
| LLVMTypeRef type, LLVMValueRef a, LLVMValueRef b) |
| { |
| LLVMValueRef values[2] = { |
| ac_to_integer(&ctx->ac, a), |
| ac_to_integer(&ctx->ac, b), |
| }; |
| LLVMValueRef result = ac_build_gather_values(&ctx->ac, values, 2); |
| return LLVMBuildBitCast(ctx->ac.builder, result, type, ""); |
| } |
| |
| static LLVMValueRef |
| load_gs_input(struct ac_shader_abi *abi, |
| unsigned location, |
| unsigned driver_location, |
| unsigned component, |
| unsigned num_components, |
| unsigned vertex_index, |
| unsigned const_index, |
| LLVMTypeRef type) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| LLVMValueRef vtx_offset; |
| unsigned param, vtx_offset_param; |
| LLVMValueRef value[4], result; |
| |
| vtx_offset_param = vertex_index; |
| assert(vtx_offset_param < 6); |
| vtx_offset = LLVMBuildMul(ctx->ac.builder, ctx->gs_vtx_offset[vtx_offset_param], |
| LLVMConstInt(ctx->ac.i32, 4, false), ""); |
| |
| param = shader_io_get_unique_index(location); |
| |
| for (unsigned i = component; i < num_components + component; i++) { |
| if (ctx->ac.chip_class >= GFX9) { |
| LLVMValueRef dw_addr = ctx->gs_vtx_offset[vtx_offset_param]; |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| LLVMConstInt(ctx->ac.i32, param * 4 + i + const_index, 0), ""); |
| value[i] = ac_lds_load(&ctx->ac, dw_addr); |
| |
| if (ac_get_type_size(type) == 8) { |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| LLVMConstInt(ctx->ac.i32, param * 4 + i + const_index + 1, 0), ""); |
| LLVMValueRef tmp = ac_lds_load(&ctx->ac, dw_addr); |
| |
| value[i] = radv_emit_fetch_64bit(ctx, type, value[i], tmp); |
| } |
| } else { |
| LLVMValueRef soffset = |
| LLVMConstInt(ctx->ac.i32, |
| (param * 4 + i + const_index) * 256, |
| false); |
| |
| value[i] = ac_build_buffer_load(&ctx->ac, |
| ctx->esgs_ring, 1, |
| ctx->ac.i32_0, |
| vtx_offset, soffset, |
| 0, ac_glc, true, false); |
| |
| if (ac_get_type_size(type) == 8) { |
| soffset = LLVMConstInt(ctx->ac.i32, |
| (param * 4 + i + const_index + 1) * 256, |
| false); |
| |
| LLVMValueRef tmp = |
| ac_build_buffer_load(&ctx->ac, |
| ctx->esgs_ring, 1, |
| ctx->ac.i32_0, |
| vtx_offset, soffset, |
| 0, ac_glc, true, false); |
| |
| value[i] = radv_emit_fetch_64bit(ctx, type, value[i], tmp); |
| } |
| } |
| |
| if (ac_get_type_size(type) == 2) { |
| value[i] = LLVMBuildBitCast(ctx->ac.builder, value[i], ctx->ac.i32, ""); |
| value[i] = LLVMBuildTrunc(ctx->ac.builder, value[i], ctx->ac.i16, ""); |
| } |
| value[i] = LLVMBuildBitCast(ctx->ac.builder, value[i], type, ""); |
| } |
| result = ac_build_varying_gather_values(&ctx->ac, value, num_components, component); |
| result = ac_to_integer(&ctx->ac, result); |
| return result; |
| } |
| |
| |
| static void radv_emit_kill(struct ac_shader_abi *abi, LLVMValueRef visible) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| ac_build_kill_if_false(&ctx->ac, visible); |
| } |
| |
| static uint32_t |
| radv_get_sample_pos_offset(uint32_t num_samples) |
| { |
| uint32_t sample_pos_offset = 0; |
| |
| switch (num_samples) { |
| case 2: |
| sample_pos_offset = 1; |
| break; |
| case 4: |
| sample_pos_offset = 3; |
| break; |
| case 8: |
| sample_pos_offset = 7; |
| break; |
| default: |
| break; |
| } |
| return sample_pos_offset; |
| } |
| |
| static LLVMValueRef load_sample_position(struct ac_shader_abi *abi, |
| LLVMValueRef sample_id) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| |
| LLVMValueRef result; |
| LLVMValueRef index = LLVMConstInt(ctx->ac.i32, RING_PS_SAMPLE_POSITIONS, false); |
| LLVMValueRef ptr = LLVMBuildGEP(ctx->ac.builder, ctx->ring_offsets, &index, 1, ""); |
| |
| ptr = LLVMBuildBitCast(ctx->ac.builder, ptr, |
| ac_array_in_const_addr_space(ctx->ac.v2f32), ""); |
| |
| uint32_t sample_pos_offset = |
| radv_get_sample_pos_offset(ctx->options->key.fs.num_samples); |
| |
| sample_id = |
| LLVMBuildAdd(ctx->ac.builder, sample_id, |
| LLVMConstInt(ctx->ac.i32, sample_pos_offset, false), ""); |
| result = ac_build_load_invariant(&ctx->ac, ptr, sample_id); |
| |
| return result; |
| } |
| |
| |
| static LLVMValueRef load_sample_mask_in(struct ac_shader_abi *abi) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| uint8_t log2_ps_iter_samples; |
| |
| if (ctx->shader_info->ps.force_persample) { |
| log2_ps_iter_samples = |
| util_logbase2(ctx->options->key.fs.num_samples); |
| } else { |
| log2_ps_iter_samples = ctx->options->key.fs.log2_ps_iter_samples; |
| } |
| |
| /* The bit pattern matches that used by fixed function fragment |
| * processing. */ |
| static const uint16_t ps_iter_masks[] = { |
| 0xffff, /* not used */ |
| 0x5555, |
| 0x1111, |
| 0x0101, |
| 0x0001, |
| }; |
| assert(log2_ps_iter_samples < ARRAY_SIZE(ps_iter_masks)); |
| |
| uint32_t ps_iter_mask = ps_iter_masks[log2_ps_iter_samples]; |
| |
| LLVMValueRef result, sample_id; |
| sample_id = ac_unpack_param(&ctx->ac, abi->ancillary, 8, 4); |
| sample_id = LLVMBuildShl(ctx->ac.builder, LLVMConstInt(ctx->ac.i32, ps_iter_mask, false), sample_id, ""); |
| result = LLVMBuildAnd(ctx->ac.builder, sample_id, abi->sample_coverage, ""); |
| return result; |
| } |
| |
| |
| static void gfx10_ngg_gs_emit_vertex(struct radv_shader_context *ctx, |
| unsigned stream, |
| LLVMValueRef *addrs); |
| |
| static void |
| visit_emit_vertex(struct ac_shader_abi *abi, unsigned stream, LLVMValueRef *addrs) |
| { |
| LLVMValueRef gs_next_vertex; |
| LLVMValueRef can_emit; |
| unsigned offset = 0; |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| |
| if (ctx->options->key.vs_common_out.as_ngg) { |
| gfx10_ngg_gs_emit_vertex(ctx, stream, addrs); |
| return; |
| } |
| |
| /* Write vertex attribute values to GSVS ring */ |
| gs_next_vertex = LLVMBuildLoad(ctx->ac.builder, |
| ctx->gs_next_vertex[stream], |
| ""); |
| |
| /* If this thread has already emitted the declared maximum number of |
| * vertices, don't emit any more: excessive vertex emissions are not |
| * supposed to have any effect. |
| */ |
| can_emit = LLVMBuildICmp(ctx->ac.builder, LLVMIntULT, gs_next_vertex, |
| LLVMConstInt(ctx->ac.i32, ctx->shader->info.gs.vertices_out, false), ""); |
| |
| bool use_kill = !ctx->shader_info->gs.writes_memory; |
| if (use_kill) |
| ac_build_kill_if_false(&ctx->ac, can_emit); |
| else |
| ac_build_ifcc(&ctx->ac, can_emit, 6505); |
| |
| for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) { |
| unsigned output_usage_mask = |
| ctx->shader_info->gs.output_usage_mask[i]; |
| uint8_t output_stream = |
| ctx->shader_info->gs.output_streams[i]; |
| LLVMValueRef *out_ptr = &addrs[i * 4]; |
| int length = util_last_bit(output_usage_mask); |
| |
| if (!(ctx->output_mask & (1ull << i)) || |
| output_stream != stream) |
| continue; |
| |
| for (unsigned j = 0; j < length; j++) { |
| if (!(output_usage_mask & (1 << j))) |
| continue; |
| |
| LLVMValueRef out_val = LLVMBuildLoad(ctx->ac.builder, |
| out_ptr[j], ""); |
| LLVMValueRef voffset = |
| LLVMConstInt(ctx->ac.i32, offset * |
| ctx->shader->info.gs.vertices_out, false); |
| |
| offset++; |
| |
| voffset = LLVMBuildAdd(ctx->ac.builder, voffset, gs_next_vertex, ""); |
| voffset = LLVMBuildMul(ctx->ac.builder, voffset, LLVMConstInt(ctx->ac.i32, 4, false), ""); |
| |
| out_val = ac_to_integer(&ctx->ac, out_val); |
| out_val = LLVMBuildZExtOrBitCast(ctx->ac.builder, out_val, ctx->ac.i32, ""); |
| |
| ac_build_buffer_store_dword(&ctx->ac, |
| ctx->gsvs_ring[stream], |
| out_val, 1, |
| voffset, ctx->gs2vs_offset, 0, |
| ac_glc | ac_slc, true); |
| } |
| } |
| |
| gs_next_vertex = LLVMBuildAdd(ctx->ac.builder, gs_next_vertex, |
| ctx->ac.i32_1, ""); |
| LLVMBuildStore(ctx->ac.builder, gs_next_vertex, ctx->gs_next_vertex[stream]); |
| |
| ac_build_sendmsg(&ctx->ac, |
| AC_SENDMSG_GS_OP_EMIT | AC_SENDMSG_GS | (stream << 8), |
| ctx->gs_wave_id); |
| |
| if (!use_kill) |
| ac_build_endif(&ctx->ac, 6505); |
| } |
| |
| static void |
| visit_end_primitive(struct ac_shader_abi *abi, unsigned stream) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| |
| if (ctx->options->key.vs_common_out.as_ngg) { |
| LLVMBuildStore(ctx->ac.builder, ctx->ac.i32_0, ctx->gs_curprim_verts[stream]); |
| return; |
| } |
| |
| ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_CUT | AC_SENDMSG_GS | (stream << 8), ctx->gs_wave_id); |
| } |
| |
| static LLVMValueRef |
| load_tess_coord(struct ac_shader_abi *abi) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| |
| LLVMValueRef coord[4] = { |
| ctx->tes_u, |
| ctx->tes_v, |
| ctx->ac.f32_0, |
| ctx->ac.f32_0, |
| }; |
| |
| if (ctx->shader->info.tess.primitive_mode == GL_TRIANGLES) |
| coord[2] = LLVMBuildFSub(ctx->ac.builder, ctx->ac.f32_1, |
| LLVMBuildFAdd(ctx->ac.builder, coord[0], coord[1], ""), ""); |
| |
| return ac_build_gather_values(&ctx->ac, coord, 3); |
| } |
| |
| static LLVMValueRef |
| load_patch_vertices_in(struct ac_shader_abi *abi) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| return LLVMConstInt(ctx->ac.i32, ctx->options->key.tcs.input_vertices, false); |
| } |
| |
| |
| static LLVMValueRef radv_load_base_vertex(struct ac_shader_abi *abi) |
| { |
| return abi->base_vertex; |
| } |
| |
| static LLVMValueRef radv_load_ssbo(struct ac_shader_abi *abi, |
| LLVMValueRef buffer_ptr, bool write) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| LLVMValueRef result; |
| |
| LLVMSetMetadata(buffer_ptr, ctx->ac.uniform_md_kind, ctx->ac.empty_md); |
| |
| result = LLVMBuildLoad(ctx->ac.builder, buffer_ptr, ""); |
| LLVMSetMetadata(result, ctx->ac.invariant_load_md_kind, ctx->ac.empty_md); |
| |
| return result; |
| } |
| |
| static LLVMValueRef radv_load_ubo(struct ac_shader_abi *abi, LLVMValueRef buffer_ptr) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| LLVMValueRef result; |
| |
| if (LLVMGetTypeKind(LLVMTypeOf(buffer_ptr)) != LLVMPointerTypeKind) { |
| /* Do not load the descriptor for inlined uniform blocks. */ |
| return buffer_ptr; |
| } |
| |
| LLVMSetMetadata(buffer_ptr, ctx->ac.uniform_md_kind, ctx->ac.empty_md); |
| |
| result = LLVMBuildLoad(ctx->ac.builder, buffer_ptr, ""); |
| LLVMSetMetadata(result, ctx->ac.invariant_load_md_kind, ctx->ac.empty_md); |
| |
| return result; |
| } |
| |
| static LLVMValueRef radv_get_sampler_desc(struct ac_shader_abi *abi, |
| unsigned descriptor_set, |
| unsigned base_index, |
| unsigned constant_index, |
| LLVMValueRef index, |
| enum ac_descriptor_type desc_type, |
| bool image, bool write, |
| bool bindless) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| LLVMValueRef list = ctx->descriptor_sets[descriptor_set]; |
| struct radv_descriptor_set_layout *layout = ctx->options->layout->set[descriptor_set].layout; |
| struct radv_descriptor_set_binding_layout *binding = layout->binding + base_index; |
| unsigned offset = binding->offset; |
| unsigned stride = binding->size; |
| unsigned type_size; |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMTypeRef type; |
| |
| assert(base_index < layout->binding_count); |
| |
| switch (desc_type) { |
| case AC_DESC_IMAGE: |
| type = ctx->ac.v8i32; |
| type_size = 32; |
| break; |
| case AC_DESC_FMASK: |
| type = ctx->ac.v8i32; |
| offset += 32; |
| type_size = 32; |
| break; |
| case AC_DESC_SAMPLER: |
| type = ctx->ac.v4i32; |
| if (binding->type == VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER) { |
| offset += radv_combined_image_descriptor_sampler_offset(binding); |
| } |
| |
| type_size = 16; |
| break; |
| case AC_DESC_BUFFER: |
| type = ctx->ac.v4i32; |
| type_size = 16; |
| break; |
| case AC_DESC_PLANE_0: |
| case AC_DESC_PLANE_1: |
| case AC_DESC_PLANE_2: |
| type = ctx->ac.v8i32; |
| type_size = 32; |
| offset += 32 * (desc_type - AC_DESC_PLANE_0); |
| break; |
| default: |
| unreachable("invalid desc_type\n"); |
| } |
| |
| offset += constant_index * stride; |
| |
| if (desc_type == AC_DESC_SAMPLER && binding->immutable_samplers_offset && |
| (!index || binding->immutable_samplers_equal)) { |
| if (binding->immutable_samplers_equal) |
| constant_index = 0; |
| |
| const uint32_t *samplers = radv_immutable_samplers(layout, binding); |
| |
| LLVMValueRef constants[] = { |
| LLVMConstInt(ctx->ac.i32, samplers[constant_index * 4 + 0], 0), |
| LLVMConstInt(ctx->ac.i32, samplers[constant_index * 4 + 1], 0), |
| LLVMConstInt(ctx->ac.i32, samplers[constant_index * 4 + 2], 0), |
| LLVMConstInt(ctx->ac.i32, samplers[constant_index * 4 + 3], 0), |
| }; |
| return ac_build_gather_values(&ctx->ac, constants, 4); |
| } |
| |
| assert(stride % type_size == 0); |
| |
| LLVMValueRef adjusted_index = index; |
| if (!adjusted_index) |
| adjusted_index = ctx->ac.i32_0; |
| |
| adjusted_index = LLVMBuildMul(builder, adjusted_index, LLVMConstInt(ctx->ac.i32, stride / type_size, 0), ""); |
| |
| LLVMValueRef val_offset = LLVMConstInt(ctx->ac.i32, offset, 0); |
| list = LLVMBuildGEP(builder, list, &val_offset, 1, ""); |
| list = LLVMBuildPointerCast(builder, list, |
| ac_array_in_const32_addr_space(type), ""); |
| |
| LLVMValueRef descriptor = ac_build_load_to_sgpr(&ctx->ac, list, adjusted_index); |
| |
| /* 3 plane formats always have same size and format for plane 1 & 2, so |
| * use the tail from plane 1 so that we can store only the first 16 bytes |
| * of the last plane. */ |
| if (desc_type == AC_DESC_PLANE_2) { |
| LLVMValueRef descriptor2 = radv_get_sampler_desc(abi, descriptor_set, base_index, constant_index, index, AC_DESC_PLANE_1,image, write, bindless); |
| |
| LLVMValueRef components[8]; |
| for (unsigned i = 0; i < 4; ++i) |
| components[i] = ac_llvm_extract_elem(&ctx->ac, descriptor, i); |
| |
| for (unsigned i = 4; i < 8; ++i) |
| components[i] = ac_llvm_extract_elem(&ctx->ac, descriptor2, i); |
| descriptor = ac_build_gather_values(&ctx->ac, components, 8); |
| } |
| |
| return descriptor; |
| } |
| |
| /* For 2_10_10_10 formats the alpha is handled as unsigned by pre-vega HW. |
| * so we may need to fix it up. */ |
| static LLVMValueRef |
| adjust_vertex_fetch_alpha(struct radv_shader_context *ctx, |
| unsigned adjustment, |
| LLVMValueRef alpha) |
| { |
| if (adjustment == RADV_ALPHA_ADJUST_NONE) |
| return alpha; |
| |
| LLVMValueRef c30 = LLVMConstInt(ctx->ac.i32, 30, 0); |
| |
| alpha = LLVMBuildBitCast(ctx->ac.builder, alpha, ctx->ac.f32, ""); |
| |
| if (adjustment == RADV_ALPHA_ADJUST_SSCALED) |
| alpha = LLVMBuildFPToUI(ctx->ac.builder, alpha, ctx->ac.i32, ""); |
| else |
| alpha = ac_to_integer(&ctx->ac, alpha); |
| |
| /* For the integer-like cases, do a natural sign extension. |
| * |
| * For the SNORM case, the values are 0.0, 0.333, 0.666, 1.0 |
| * and happen to contain 0, 1, 2, 3 as the two LSBs of the |
| * exponent. |
| */ |
| alpha = LLVMBuildShl(ctx->ac.builder, alpha, |
| adjustment == RADV_ALPHA_ADJUST_SNORM ? |
| LLVMConstInt(ctx->ac.i32, 7, 0) : c30, ""); |
| alpha = LLVMBuildAShr(ctx->ac.builder, alpha, c30, ""); |
| |
| /* Convert back to the right type. */ |
| if (adjustment == RADV_ALPHA_ADJUST_SNORM) { |
| LLVMValueRef clamp; |
| LLVMValueRef neg_one = LLVMConstReal(ctx->ac.f32, -1.0); |
| alpha = LLVMBuildSIToFP(ctx->ac.builder, alpha, ctx->ac.f32, ""); |
| clamp = LLVMBuildFCmp(ctx->ac.builder, LLVMRealULT, alpha, neg_one, ""); |
| alpha = LLVMBuildSelect(ctx->ac.builder, clamp, neg_one, alpha, ""); |
| } else if (adjustment == RADV_ALPHA_ADJUST_SSCALED) { |
| alpha = LLVMBuildSIToFP(ctx->ac.builder, alpha, ctx->ac.f32, ""); |
| } |
| |
| return LLVMBuildBitCast(ctx->ac.builder, alpha, ctx->ac.i32, ""); |
| } |
| |
| static unsigned |
| get_num_channels_from_data_format(unsigned data_format) |
| { |
| switch (data_format) { |
| case V_008F0C_BUF_DATA_FORMAT_8: |
| case V_008F0C_BUF_DATA_FORMAT_16: |
| case V_008F0C_BUF_DATA_FORMAT_32: |
| return 1; |
| case V_008F0C_BUF_DATA_FORMAT_8_8: |
| case V_008F0C_BUF_DATA_FORMAT_16_16: |
| case V_008F0C_BUF_DATA_FORMAT_32_32: |
| return 2; |
| case V_008F0C_BUF_DATA_FORMAT_10_11_11: |
| case V_008F0C_BUF_DATA_FORMAT_11_11_10: |
| case V_008F0C_BUF_DATA_FORMAT_32_32_32: |
| return 3; |
| case V_008F0C_BUF_DATA_FORMAT_8_8_8_8: |
| case V_008F0C_BUF_DATA_FORMAT_10_10_10_2: |
| case V_008F0C_BUF_DATA_FORMAT_2_10_10_10: |
| case V_008F0C_BUF_DATA_FORMAT_16_16_16_16: |
| case V_008F0C_BUF_DATA_FORMAT_32_32_32_32: |
| return 4; |
| default: |
| break; |
| } |
| |
| return 4; |
| } |
| |
| static LLVMValueRef |
| radv_fixup_vertex_input_fetches(struct radv_shader_context *ctx, |
| LLVMValueRef value, |
| unsigned num_channels, |
| bool is_float) |
| { |
| LLVMValueRef zero = is_float ? ctx->ac.f32_0 : ctx->ac.i32_0; |
| LLVMValueRef one = is_float ? ctx->ac.f32_1 : ctx->ac.i32_1; |
| LLVMValueRef chan[4]; |
| |
| if (LLVMGetTypeKind(LLVMTypeOf(value)) == LLVMVectorTypeKind) { |
| unsigned vec_size = LLVMGetVectorSize(LLVMTypeOf(value)); |
| |
| if (num_channels == 4 && num_channels == vec_size) |
| return value; |
| |
| num_channels = MIN2(num_channels, vec_size); |
| |
| for (unsigned i = 0; i < num_channels; i++) |
| chan[i] = ac_llvm_extract_elem(&ctx->ac, value, i); |
| } else { |
| if (num_channels) { |
| assert(num_channels == 1); |
| chan[0] = value; |
| } |
| } |
| |
| for (unsigned i = num_channels; i < 4; i++) { |
| chan[i] = i == 3 ? one : zero; |
| chan[i] = ac_to_integer(&ctx->ac, chan[i]); |
| } |
| |
| return ac_build_gather_values(&ctx->ac, chan, 4); |
| } |
| |
| static void |
| handle_vs_input_decl(struct radv_shader_context *ctx, |
| struct nir_variable *variable) |
| { |
| LLVMValueRef t_list_ptr = ctx->vertex_buffers; |
| LLVMValueRef t_offset; |
| LLVMValueRef t_list; |
| LLVMValueRef input; |
| LLVMValueRef buffer_index; |
| unsigned attrib_count = glsl_count_attribute_slots(variable->type, true); |
| uint8_t input_usage_mask = |
| ctx->shader_info->vs.input_usage_mask[variable->data.location]; |
| unsigned num_input_channels = util_last_bit(input_usage_mask); |
| |
| variable->data.driver_location = variable->data.location * 4; |
| |
| enum glsl_base_type type = glsl_get_base_type(variable->type); |
| for (unsigned i = 0; i < attrib_count; ++i) { |
| LLVMValueRef output[4]; |
| unsigned attrib_index = variable->data.location + i - VERT_ATTRIB_GENERIC0; |
| unsigned attrib_format = ctx->options->key.vs.vertex_attribute_formats[attrib_index]; |
| unsigned data_format = attrib_format & 0x0f; |
| unsigned num_format = (attrib_format >> 4) & 0x07; |
| bool is_float = num_format != V_008F0C_BUF_NUM_FORMAT_UINT && |
| num_format != V_008F0C_BUF_NUM_FORMAT_SINT; |
| |
| if (ctx->options->key.vs.instance_rate_inputs & (1u << attrib_index)) { |
| uint32_t divisor = ctx->options->key.vs.instance_rate_divisors[attrib_index]; |
| |
| if (divisor) { |
| buffer_index = ctx->abi.instance_id; |
| |
| if (divisor != 1) { |
| buffer_index = LLVMBuildUDiv(ctx->ac.builder, buffer_index, |
| LLVMConstInt(ctx->ac.i32, divisor, 0), ""); |
| } |
| } else { |
| buffer_index = ctx->ac.i32_0; |
| } |
| |
| buffer_index = LLVMBuildAdd(ctx->ac.builder, ctx->abi.start_instance, buffer_index, ""); |
| } else |
| buffer_index = LLVMBuildAdd(ctx->ac.builder, ctx->abi.vertex_id, |
| ctx->abi.base_vertex, ""); |
| |
| /* Adjust the number of channels to load based on the vertex |
| * attribute format. |
| */ |
| unsigned num_format_channels = get_num_channels_from_data_format(data_format); |
| unsigned num_channels = MIN2(num_input_channels, num_format_channels); |
| unsigned attrib_binding = ctx->options->key.vs.vertex_attribute_bindings[attrib_index]; |
| unsigned attrib_offset = ctx->options->key.vs.vertex_attribute_offsets[attrib_index]; |
| unsigned attrib_stride = ctx->options->key.vs.vertex_attribute_strides[attrib_index]; |
| |
| if (ctx->options->key.vs.post_shuffle & (1 << attrib_index)) { |
| /* Always load, at least, 3 channels for formats that |
| * need to be shuffled because X<->Z. |
| */ |
| num_channels = MAX2(num_channels, 3); |
| } |
| |
| if (attrib_stride != 0 && attrib_offset > attrib_stride) { |
| LLVMValueRef buffer_offset = |
| LLVMConstInt(ctx->ac.i32, |
| attrib_offset / attrib_stride, false); |
| |
| buffer_index = LLVMBuildAdd(ctx->ac.builder, |
| buffer_index, |
| buffer_offset, ""); |
| |
| attrib_offset = attrib_offset % attrib_stride; |
| } |
| |
| t_offset = LLVMConstInt(ctx->ac.i32, attrib_binding, false); |
| t_list = ac_build_load_to_sgpr(&ctx->ac, t_list_ptr, t_offset); |
| |
| input = ac_build_struct_tbuffer_load(&ctx->ac, t_list, |
| buffer_index, |
| LLVMConstInt(ctx->ac.i32, attrib_offset, false), |
| ctx->ac.i32_0, ctx->ac.i32_0, |
| num_channels, |
| data_format, num_format, 0, true); |
| |
| if (ctx->options->key.vs.post_shuffle & (1 << attrib_index)) { |
| LLVMValueRef c[4]; |
| c[0] = ac_llvm_extract_elem(&ctx->ac, input, 2); |
| c[1] = ac_llvm_extract_elem(&ctx->ac, input, 1); |
| c[2] = ac_llvm_extract_elem(&ctx->ac, input, 0); |
| c[3] = ac_llvm_extract_elem(&ctx->ac, input, 3); |
| |
| input = ac_build_gather_values(&ctx->ac, c, 4); |
| } |
| |
| input = radv_fixup_vertex_input_fetches(ctx, input, num_channels, |
| is_float); |
| |
| for (unsigned chan = 0; chan < 4; chan++) { |
| LLVMValueRef llvm_chan = LLVMConstInt(ctx->ac.i32, chan, false); |
| output[chan] = LLVMBuildExtractElement(ctx->ac.builder, input, llvm_chan, ""); |
| if (type == GLSL_TYPE_FLOAT16) { |
| output[chan] = LLVMBuildBitCast(ctx->ac.builder, output[chan], ctx->ac.f32, ""); |
| output[chan] = LLVMBuildFPTrunc(ctx->ac.builder, output[chan], ctx->ac.f16, ""); |
| } |
| } |
| |
| unsigned alpha_adjust = (ctx->options->key.vs.alpha_adjust >> (attrib_index * 2)) & 3; |
| output[3] = adjust_vertex_fetch_alpha(ctx, alpha_adjust, output[3]); |
| |
| for (unsigned chan = 0; chan < 4; chan++) { |
| output[chan] = ac_to_integer(&ctx->ac, output[chan]); |
| if (type == GLSL_TYPE_UINT16 || type == GLSL_TYPE_INT16) |
| output[chan] = LLVMBuildTrunc(ctx->ac.builder, output[chan], ctx->ac.i16, ""); |
| |
| ctx->inputs[ac_llvm_reg_index_soa(variable->data.location + i, chan)] = output[chan]; |
| } |
| } |
| } |
| |
| static void |
| handle_vs_inputs(struct radv_shader_context *ctx, |
| struct nir_shader *nir) { |
| nir_foreach_variable(variable, &nir->inputs) |
| handle_vs_input_decl(ctx, variable); |
| } |
| |
| static void |
| prepare_interp_optimize(struct radv_shader_context *ctx, |
| struct nir_shader *nir) |
| { |
| bool uses_center = false; |
| bool uses_centroid = false; |
| nir_foreach_variable(variable, &nir->inputs) { |
| if (glsl_get_base_type(glsl_without_array(variable->type)) != GLSL_TYPE_FLOAT || |
| variable->data.sample) |
| continue; |
| |
| if (variable->data.centroid) |
| uses_centroid = true; |
| else |
| uses_center = true; |
| } |
| |
| if (uses_center && uses_centroid) { |
| LLVMValueRef sel = LLVMBuildICmp(ctx->ac.builder, LLVMIntSLT, ctx->abi.prim_mask, ctx->ac.i32_0, ""); |
| ctx->abi.persp_centroid = LLVMBuildSelect(ctx->ac.builder, sel, ctx->abi.persp_center, ctx->abi.persp_centroid, ""); |
| ctx->abi.linear_centroid = LLVMBuildSelect(ctx->ac.builder, sel, ctx->abi.linear_center, ctx->abi.linear_centroid, ""); |
| } |
| } |
| |
| static void |
| scan_shader_output_decl(struct radv_shader_context *ctx, |
| struct nir_variable *variable, |
| struct nir_shader *shader, |
| gl_shader_stage stage) |
| { |
| int idx = variable->data.location + variable->data.index; |
| unsigned attrib_count = glsl_count_attribute_slots(variable->type, false); |
| uint64_t mask_attribs; |
| |
| variable->data.driver_location = idx * 4; |
| |
| /* tess ctrl has it's own load/store paths for outputs */ |
| if (stage == MESA_SHADER_TESS_CTRL) |
| return; |
| |
| if (variable->data.compact) { |
| unsigned component_count = variable->data.location_frac + |
| glsl_get_length(variable->type); |
| attrib_count = (component_count + 3) / 4; |
| } |
| |
| mask_attribs = ((1ull << attrib_count) - 1) << idx; |
| |
| ctx->output_mask |= mask_attribs; |
| } |
| |
| |
| /* Initialize arguments for the shader export intrinsic */ |
| static void |
| si_llvm_init_export_args(struct radv_shader_context *ctx, |
| LLVMValueRef *values, |
| unsigned enabled_channels, |
| unsigned target, |
| struct ac_export_args *args) |
| { |
| /* Specify the channels that are enabled. */ |
| args->enabled_channels = enabled_channels; |
| |
| /* Specify whether the EXEC mask represents the valid mask */ |
| args->valid_mask = 0; |
| |
| /* Specify whether this is the last export */ |
| args->done = 0; |
| |
| /* Specify the target we are exporting */ |
| args->target = target; |
| |
| args->compr = false; |
| args->out[0] = LLVMGetUndef(ctx->ac.f32); |
| args->out[1] = LLVMGetUndef(ctx->ac.f32); |
| args->out[2] = LLVMGetUndef(ctx->ac.f32); |
| args->out[3] = LLVMGetUndef(ctx->ac.f32); |
| |
| if (!values) |
| return; |
| |
| bool is_16bit = ac_get_type_size(LLVMTypeOf(values[0])) == 2; |
| if (ctx->stage == MESA_SHADER_FRAGMENT) { |
| unsigned index = target - V_008DFC_SQ_EXP_MRT; |
| unsigned col_format = (ctx->options->key.fs.col_format >> (4 * index)) & 0xf; |
| bool is_int8 = (ctx->options->key.fs.is_int8 >> index) & 1; |
| bool is_int10 = (ctx->options->key.fs.is_int10 >> index) & 1; |
| unsigned chan; |
| |
| LLVMValueRef (*packf)(struct ac_llvm_context *ctx, LLVMValueRef args[2]) = NULL; |
| LLVMValueRef (*packi)(struct ac_llvm_context *ctx, LLVMValueRef args[2], |
| unsigned bits, bool hi) = NULL; |
| |
| switch(col_format) { |
| case V_028714_SPI_SHADER_ZERO: |
| args->enabled_channels = 0; /* writemask */ |
| args->target = V_008DFC_SQ_EXP_NULL; |
| break; |
| |
| case V_028714_SPI_SHADER_32_R: |
| args->enabled_channels = 1; |
| args->out[0] = values[0]; |
| break; |
| |
| case V_028714_SPI_SHADER_32_GR: |
| args->enabled_channels = 0x3; |
| args->out[0] = values[0]; |
| args->out[1] = values[1]; |
| break; |
| |
| case V_028714_SPI_SHADER_32_AR: |
| if (ctx->ac.chip_class >= GFX10) { |
| args->enabled_channels = 0x3; |
| args->out[0] = values[0]; |
| args->out[1] = values[3]; |
| } else { |
| args->enabled_channels = 0x9; |
| args->out[0] = values[0]; |
| args->out[3] = values[3]; |
| } |
| break; |
| |
| case V_028714_SPI_SHADER_FP16_ABGR: |
| args->enabled_channels = 0x5; |
| packf = ac_build_cvt_pkrtz_f16; |
| if (is_16bit) { |
| for (unsigned chan = 0; chan < 4; chan++) |
| values[chan] = LLVMBuildFPExt(ctx->ac.builder, |
| values[chan], |
| ctx->ac.f32, ""); |
| } |
| break; |
| |
| case V_028714_SPI_SHADER_UNORM16_ABGR: |
| args->enabled_channels = 0x5; |
| packf = ac_build_cvt_pknorm_u16; |
| break; |
| |
| case V_028714_SPI_SHADER_SNORM16_ABGR: |
| args->enabled_channels = 0x5; |
| packf = ac_build_cvt_pknorm_i16; |
| break; |
| |
| case V_028714_SPI_SHADER_UINT16_ABGR: |
| args->enabled_channels = 0x5; |
| packi = ac_build_cvt_pk_u16; |
| if (is_16bit) { |
| for (unsigned chan = 0; chan < 4; chan++) |
| values[chan] = LLVMBuildZExt(ctx->ac.builder, |
| ac_to_integer(&ctx->ac, values[chan]), |
| ctx->ac.i32, ""); |
| } |
| break; |
| |
| case V_028714_SPI_SHADER_SINT16_ABGR: |
| args->enabled_channels = 0x5; |
| packi = ac_build_cvt_pk_i16; |
| if (is_16bit) { |
| for (unsigned chan = 0; chan < 4; chan++) |
| values[chan] = LLVMBuildSExt(ctx->ac.builder, |
| ac_to_integer(&ctx->ac, values[chan]), |
| ctx->ac.i32, ""); |
| } |
| break; |
| |
| default: |
| case V_028714_SPI_SHADER_32_ABGR: |
| memcpy(&args->out[0], values, sizeof(values[0]) * 4); |
| break; |
| } |
| |
| /* Pack f16 or norm_i16/u16. */ |
| if (packf) { |
| for (chan = 0; chan < 2; chan++) { |
| LLVMValueRef pack_args[2] = { |
| values[2 * chan], |
| values[2 * chan + 1] |
| }; |
| LLVMValueRef packed; |
| |
| packed = packf(&ctx->ac, pack_args); |
| args->out[chan] = ac_to_float(&ctx->ac, packed); |
| } |
| args->compr = 1; /* COMPR flag */ |
| } |
| |
| /* Pack i16/u16. */ |
| if (packi) { |
| for (chan = 0; chan < 2; chan++) { |
| LLVMValueRef pack_args[2] = { |
| ac_to_integer(&ctx->ac, values[2 * chan]), |
| ac_to_integer(&ctx->ac, values[2 * chan + 1]) |
| }; |
| LLVMValueRef packed; |
| |
| packed = packi(&ctx->ac, pack_args, |
| is_int8 ? 8 : is_int10 ? 10 : 16, |
| chan == 1); |
| args->out[chan] = ac_to_float(&ctx->ac, packed); |
| } |
| args->compr = 1; /* COMPR flag */ |
| } |
| return; |
| } |
| |
| if (is_16bit) { |
| for (unsigned chan = 0; chan < 4; chan++) { |
| values[chan] = LLVMBuildBitCast(ctx->ac.builder, values[chan], ctx->ac.i16, ""); |
| args->out[chan] = LLVMBuildZExt(ctx->ac.builder, values[chan], ctx->ac.i32, ""); |
| } |
| } else |
| memcpy(&args->out[0], values, sizeof(values[0]) * 4); |
| |
| for (unsigned i = 0; i < 4; ++i) |
| args->out[i] = ac_to_float(&ctx->ac, args->out[i]); |
| } |
| |
| static void |
| radv_export_param(struct radv_shader_context *ctx, unsigned index, |
| LLVMValueRef *values, unsigned enabled_channels) |
| { |
| struct ac_export_args args; |
| |
| si_llvm_init_export_args(ctx, values, enabled_channels, |
| V_008DFC_SQ_EXP_PARAM + index, &args); |
| ac_build_export(&ctx->ac, &args); |
| } |
| |
| static LLVMValueRef |
| radv_load_output(struct radv_shader_context *ctx, unsigned index, unsigned chan) |
| { |
| LLVMValueRef output = ctx->abi.outputs[ac_llvm_reg_index_soa(index, chan)]; |
| return LLVMBuildLoad(ctx->ac.builder, output, ""); |
| } |
| |
| static void |
| radv_emit_stream_output(struct radv_shader_context *ctx, |
| LLVMValueRef const *so_buffers, |
| LLVMValueRef const *so_write_offsets, |
| const struct radv_stream_output *output, |
| struct radv_shader_output_values *shader_out) |
| { |
| unsigned num_comps = util_bitcount(output->component_mask); |
| unsigned buf = output->buffer; |
| unsigned offset = output->offset; |
| unsigned start; |
| LLVMValueRef out[4]; |
| |
| assert(num_comps && num_comps <= 4); |
| if (!num_comps || num_comps > 4) |
| return; |
| |
| /* Get the first component. */ |
| start = ffs(output->component_mask) - 1; |
| |
| /* Load the output as int. */ |
| for (int i = 0; i < num_comps; i++) { |
| out[i] = ac_to_integer(&ctx->ac, shader_out->values[start + i]); |
| } |
| |
| /* Pack the output. */ |
| LLVMValueRef vdata = NULL; |
| |
| switch (num_comps) { |
| case 1: /* as i32 */ |
| vdata = out[0]; |
| break; |
| case 2: /* as v2i32 */ |
| case 3: /* as v4i32 (aligned to 4) */ |
| out[3] = LLVMGetUndef(ctx->ac.i32); |
| /* fall through */ |
| case 4: /* as v4i32 */ |
| vdata = ac_build_gather_values(&ctx->ac, out, |
| !ac_has_vec3_support(ctx->ac.chip_class, false) ? |
| util_next_power_of_two(num_comps) : |
| num_comps); |
| break; |
| } |
| |
| ac_build_buffer_store_dword(&ctx->ac, so_buffers[buf], |
| vdata, num_comps, so_write_offsets[buf], |
| ctx->ac.i32_0, offset, |
| ac_glc | ac_slc, false); |
| } |
| |
| static void |
| radv_emit_streamout(struct radv_shader_context *ctx, unsigned stream) |
| { |
| int i; |
| |
| /* Get bits [22:16], i.e. (so_param >> 16) & 127; */ |
| assert(ctx->streamout_config); |
| LLVMValueRef so_vtx_count = |
| ac_build_bfe(&ctx->ac, ctx->streamout_config, |
| LLVMConstInt(ctx->ac.i32, 16, false), |
| LLVMConstInt(ctx->ac.i32, 7, false), false); |
| |
| LLVMValueRef tid = ac_get_thread_id(&ctx->ac); |
| |
| /* can_emit = tid < so_vtx_count; */ |
| LLVMValueRef can_emit = LLVMBuildICmp(ctx->ac.builder, LLVMIntULT, |
| tid, so_vtx_count, ""); |
| |
| /* Emit the streamout code conditionally. This actually avoids |
| * out-of-bounds buffer access. The hw tells us via the SGPR |
| * (so_vtx_count) which threads are allowed to emit streamout data. |
| */ |
| ac_build_ifcc(&ctx->ac, can_emit, 6501); |
| { |
| /* The buffer offset is computed as follows: |
| * ByteOffset = streamout_offset[buffer_id]*4 + |
| * (streamout_write_index + thread_id)*stride[buffer_id] + |
| * attrib_offset |
| */ |
| LLVMValueRef so_write_index = ctx->streamout_write_idx; |
| |
| /* Compute (streamout_write_index + thread_id). */ |
| so_write_index = |
| LLVMBuildAdd(ctx->ac.builder, so_write_index, tid, ""); |
| |
| /* Load the descriptor and compute the write offset for each |
| * enabled buffer. |
| */ |
| LLVMValueRef so_write_offset[4] = {}; |
| LLVMValueRef so_buffers[4] = {}; |
| LLVMValueRef buf_ptr = ctx->streamout_buffers; |
| |
| for (i = 0; i < 4; i++) { |
| uint16_t stride = ctx->shader_info->so.strides[i]; |
| |
| if (!stride) |
| continue; |
| |
| LLVMValueRef offset = |
| LLVMConstInt(ctx->ac.i32, i, false); |
| |
| so_buffers[i] = ac_build_load_to_sgpr(&ctx->ac, |
| buf_ptr, offset); |
| |
| LLVMValueRef so_offset = ctx->streamout_offset[i]; |
| |
| so_offset = LLVMBuildMul(ctx->ac.builder, so_offset, |
| LLVMConstInt(ctx->ac.i32, 4, false), ""); |
| |
| so_write_offset[i] = |
| ac_build_imad(&ctx->ac, so_write_index, |
| LLVMConstInt(ctx->ac.i32, |
| stride * 4, false), |
| so_offset); |
| } |
| |
| /* Write streamout data. */ |
| for (i = 0; i < ctx->shader_info->so.num_outputs; i++) { |
| struct radv_shader_output_values shader_out = {}; |
| struct radv_stream_output *output = |
| &ctx->shader_info->so.outputs[i]; |
| |
| if (stream != output->stream) |
| continue; |
| |
| for (int j = 0; j < 4; j++) { |
| shader_out.values[j] = |
| radv_load_output(ctx, output->location, j); |
| } |
| |
| radv_emit_stream_output(ctx, so_buffers,so_write_offset, |
| output, &shader_out); |
| } |
| } |
| ac_build_endif(&ctx->ac, 6501); |
| } |
| |
| static void |
| radv_build_param_exports(struct radv_shader_context *ctx, |
| struct radv_shader_output_values *outputs, |
| unsigned noutput, |
| struct radv_vs_output_info *outinfo, |
| bool export_clip_dists) |
| { |
| unsigned param_count = 0; |
| |
| for (unsigned i = 0; i < noutput; i++) { |
| unsigned slot_name = outputs[i].slot_name; |
| unsigned usage_mask = outputs[i].usage_mask; |
| |
| if (slot_name != VARYING_SLOT_LAYER && |
| slot_name != VARYING_SLOT_PRIMITIVE_ID && |
| slot_name != VARYING_SLOT_CLIP_DIST0 && |
| slot_name != VARYING_SLOT_CLIP_DIST1 && |
| slot_name < VARYING_SLOT_VAR0) |
| continue; |
| |
| if ((slot_name == VARYING_SLOT_CLIP_DIST0 || |
| slot_name == VARYING_SLOT_CLIP_DIST1) && !export_clip_dists) |
| continue; |
| |
| radv_export_param(ctx, param_count, outputs[i].values, usage_mask); |
| |
| assert(i < ARRAY_SIZE(outinfo->vs_output_param_offset)); |
| outinfo->vs_output_param_offset[slot_name] = param_count++; |
| } |
| |
| outinfo->param_exports = param_count; |
| } |
| |
| /* Generate export instructions for hardware VS shader stage or NGG GS stage |
| * (position and parameter data only). |
| */ |
| static void |
| radv_llvm_export_vs(struct radv_shader_context *ctx, |
| struct radv_shader_output_values *outputs, |
| unsigned noutput, |
| struct radv_vs_output_info *outinfo, |
| bool export_clip_dists) |
| { |
| LLVMValueRef psize_value = NULL, layer_value = NULL, viewport_value = NULL; |
| struct ac_export_args pos_args[4] = {}; |
| unsigned pos_idx, index; |
| int i; |
| |
| /* Build position exports */ |
| for (i = 0; i < noutput; i++) { |
| switch (outputs[i].slot_name) { |
| case VARYING_SLOT_POS: |
| si_llvm_init_export_args(ctx, outputs[i].values, 0xf, |
| V_008DFC_SQ_EXP_POS, &pos_args[0]); |
| break; |
| case VARYING_SLOT_PSIZ: |
| psize_value = outputs[i].values[0]; |
| break; |
| case VARYING_SLOT_LAYER: |
| layer_value = outputs[i].values[0]; |
| break; |
| case VARYING_SLOT_VIEWPORT: |
| viewport_value = outputs[i].values[0]; |
| break; |
| case VARYING_SLOT_CLIP_DIST0: |
| case VARYING_SLOT_CLIP_DIST1: |
| index = 2 + outputs[i].slot_index; |
| si_llvm_init_export_args(ctx, outputs[i].values, 0xf, |
| V_008DFC_SQ_EXP_POS + index, |
| &pos_args[index]); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* We need to add the position output manually if it's missing. */ |
| if (!pos_args[0].out[0]) { |
| pos_args[0].enabled_channels = 0xf; /* writemask */ |
| pos_args[0].valid_mask = 0; /* EXEC mask */ |
| pos_args[0].done = 0; /* last export? */ |
| pos_args[0].target = V_008DFC_SQ_EXP_POS; |
| pos_args[0].compr = 0; /* COMPR flag */ |
| pos_args[0].out[0] = ctx->ac.f32_0; /* X */ |
| pos_args[0].out[1] = ctx->ac.f32_0; /* Y */ |
| pos_args[0].out[2] = ctx->ac.f32_0; /* Z */ |
| pos_args[0].out[3] = ctx->ac.f32_1; /* W */ |
| } |
| |
| if (outinfo->writes_pointsize || |
| outinfo->writes_layer || |
| outinfo->writes_viewport_index) { |
| pos_args[1].enabled_channels = ((outinfo->writes_pointsize == true ? 1 : 0) | |
| (outinfo->writes_layer == true ? 4 : 0)); |
| pos_args[1].valid_mask = 0; |
| pos_args[1].done = 0; |
| pos_args[1].target = V_008DFC_SQ_EXP_POS + 1; |
| pos_args[1].compr = 0; |
| pos_args[1].out[0] = ctx->ac.f32_0; /* X */ |
| pos_args[1].out[1] = ctx->ac.f32_0; /* Y */ |
| pos_args[1].out[2] = ctx->ac.f32_0; /* Z */ |
| pos_args[1].out[3] = ctx->ac.f32_0; /* W */ |
| |
| if (outinfo->writes_pointsize == true) |
| pos_args[1].out[0] = psize_value; |
| if (outinfo->writes_layer == true) |
| pos_args[1].out[2] = layer_value; |
| if (outinfo->writes_viewport_index == true) { |
| if (ctx->options->chip_class >= GFX9) { |
| /* GFX9 has the layer in out.z[10:0] and the viewport |
| * index in out.z[19:16]. |
| */ |
| LLVMValueRef v = viewport_value; |
| v = ac_to_integer(&ctx->ac, v); |
| v = LLVMBuildShl(ctx->ac.builder, v, |
| LLVMConstInt(ctx->ac.i32, 16, false), |
| ""); |
| v = LLVMBuildOr(ctx->ac.builder, v, |
| ac_to_integer(&ctx->ac, pos_args[1].out[2]), ""); |
| |
| pos_args[1].out[2] = ac_to_float(&ctx->ac, v); |
| pos_args[1].enabled_channels |= 1 << 2; |
| } else { |
| pos_args[1].out[3] = viewport_value; |
| pos_args[1].enabled_channels |= 1 << 3; |
| } |
| } |
| } |
| |
| for (i = 0; i < 4; i++) { |
| if (pos_args[i].out[0]) |
| outinfo->pos_exports++; |
| } |
| |
| /* Navi10-14 skip POS0 exports if EXEC=0 and DONE=0, causing a hang. |
| * Setting valid_mask=1 prevents it and has no other effect. |
| */ |
| if (ctx->ac.family == CHIP_NAVI10 || |
| ctx->ac.family == CHIP_NAVI12 || |
| ctx->ac.family == CHIP_NAVI14) |
| pos_args[0].valid_mask = 1; |
| |
| pos_idx = 0; |
| for (i = 0; i < 4; i++) { |
| if (!pos_args[i].out[0]) |
| continue; |
| |
| /* Specify the target we are exporting */ |
| pos_args[i].target = V_008DFC_SQ_EXP_POS + pos_idx++; |
| |
| if (pos_idx == outinfo->pos_exports) |
| /* Specify that this is the last export */ |
| pos_args[i].done = 1; |
| |
| ac_build_export(&ctx->ac, &pos_args[i]); |
| } |
| |
| /* Build parameter exports */ |
| radv_build_param_exports(ctx, outputs, noutput, outinfo, export_clip_dists); |
| } |
| |
| static void |
| handle_vs_outputs_post(struct radv_shader_context *ctx, |
| bool export_prim_id, |
| bool export_clip_dists, |
| struct radv_vs_output_info *outinfo) |
| { |
| struct radv_shader_output_values *outputs; |
| unsigned noutput = 0; |
| |
| if (ctx->options->key.has_multiview_view_index) { |
| LLVMValueRef* tmp_out = &ctx->abi.outputs[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER, 0)]; |
| if(!*tmp_out) { |
| for(unsigned i = 0; i < 4; ++i) |
| ctx->abi.outputs[ac_llvm_reg_index_soa(VARYING_SLOT_LAYER, i)] = |
| ac_build_alloca_undef(&ctx->ac, ctx->ac.f32, ""); |
| } |
| |
| LLVMBuildStore(ctx->ac.builder, ac_to_float(&ctx->ac, ctx->abi.view_index), *tmp_out); |
| ctx->output_mask |= 1ull << VARYING_SLOT_LAYER; |
| } |
| |
| memset(outinfo->vs_output_param_offset, AC_EXP_PARAM_UNDEFINED, |
| sizeof(outinfo->vs_output_param_offset)); |
| outinfo->pos_exports = 0; |
| |
| if (!ctx->options->use_ngg_streamout && |
| ctx->shader_info->so.num_outputs && |
| !ctx->is_gs_copy_shader) { |
| /* The GS copy shader emission already emits streamout. */ |
| radv_emit_streamout(ctx, 0); |
| } |
| |
| /* Allocate a temporary array for the output values. */ |
| unsigned num_outputs = util_bitcount64(ctx->output_mask) + export_prim_id; |
| outputs = malloc(num_outputs * sizeof(outputs[0])); |
| |
| for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) { |
| if (!(ctx->output_mask & (1ull << i))) |
| continue; |
| |
| outputs[noutput].slot_name = i; |
| outputs[noutput].slot_index = i == VARYING_SLOT_CLIP_DIST1; |
| |
| if (ctx->stage == MESA_SHADER_VERTEX && |
| !ctx->is_gs_copy_shader) { |
| outputs[noutput].usage_mask = |
| ctx->shader_info->vs.output_usage_mask[i]; |
| } else if (ctx->stage == MESA_SHADER_TESS_EVAL) { |
| outputs[noutput].usage_mask = |
| ctx->shader_info->tes.output_usage_mask[i]; |
| } else { |
| assert(ctx->is_gs_copy_shader); |
| outputs[noutput].usage_mask = |
| ctx->shader_info->gs.output_usage_mask[i]; |
| } |
| |
| for (unsigned j = 0; j < 4; j++) { |
| outputs[noutput].values[j] = |
| ac_to_float(&ctx->ac, radv_load_output(ctx, i, j)); |
| } |
| |
| noutput++; |
| } |
| |
| /* Export PrimitiveID. */ |
| if (export_prim_id) { |
| outputs[noutput].slot_name = VARYING_SLOT_PRIMITIVE_ID; |
| outputs[noutput].slot_index = 0; |
| outputs[noutput].usage_mask = 0x1; |
| outputs[noutput].values[0] = ctx->vs_prim_id; |
| for (unsigned j = 1; j < 4; j++) |
| outputs[noutput].values[j] = ctx->ac.f32_0; |
| noutput++; |
| } |
| |
| radv_llvm_export_vs(ctx, outputs, noutput, outinfo, export_clip_dists); |
| |
| free(outputs); |
| } |
| |
| static void |
| handle_es_outputs_post(struct radv_shader_context *ctx, |
| struct radv_es_output_info *outinfo) |
| { |
| int j; |
| LLVMValueRef lds_base = NULL; |
| |
| if (ctx->ac.chip_class >= GFX9) { |
| unsigned itemsize_dw = outinfo->esgs_itemsize / 4; |
| LLVMValueRef vertex_idx = ac_get_thread_id(&ctx->ac); |
| LLVMValueRef wave_idx = ac_unpack_param(&ctx->ac, ctx->merged_wave_info, 24, 4); |
| vertex_idx = LLVMBuildOr(ctx->ac.builder, vertex_idx, |
| LLVMBuildMul(ctx->ac.builder, wave_idx, |
| LLVMConstInt(ctx->ac.i32, |
| ctx->ac.wave_size, false), ""), ""); |
| lds_base = LLVMBuildMul(ctx->ac.builder, vertex_idx, |
| LLVMConstInt(ctx->ac.i32, itemsize_dw, 0), ""); |
| } |
| |
| for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) { |
| LLVMValueRef dw_addr = NULL; |
| LLVMValueRef *out_ptr = &ctx->abi.outputs[i * 4]; |
| unsigned output_usage_mask; |
| int param_index; |
| |
| if (!(ctx->output_mask & (1ull << i))) |
| continue; |
| |
| if (ctx->stage == MESA_SHADER_VERTEX) { |
| output_usage_mask = |
| ctx->shader_info->vs.output_usage_mask[i]; |
| } else { |
| assert(ctx->stage == MESA_SHADER_TESS_EVAL); |
| output_usage_mask = |
| ctx->shader_info->tes.output_usage_mask[i]; |
| } |
| |
| param_index = shader_io_get_unique_index(i); |
| |
| if (lds_base) { |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, lds_base, |
| LLVMConstInt(ctx->ac.i32, param_index * 4, false), |
| ""); |
| } |
| |
| for (j = 0; j < 4; j++) { |
| if (!(output_usage_mask & (1 << j))) |
| continue; |
| |
| LLVMValueRef out_val = LLVMBuildLoad(ctx->ac.builder, out_ptr[j], ""); |
| out_val = ac_to_integer(&ctx->ac, out_val); |
| out_val = LLVMBuildZExtOrBitCast(ctx->ac.builder, out_val, ctx->ac.i32, ""); |
| |
| if (ctx->ac.chip_class >= GFX9) { |
| LLVMValueRef dw_addr_offset = |
| LLVMBuildAdd(ctx->ac.builder, dw_addr, |
| LLVMConstInt(ctx->ac.i32, |
| j, false), ""); |
| |
| ac_lds_store(&ctx->ac, dw_addr_offset, out_val); |
| } else { |
| ac_build_buffer_store_dword(&ctx->ac, |
| ctx->esgs_ring, |
| out_val, 1, |
| NULL, ctx->es2gs_offset, |
| (4 * param_index + j) * 4, |
| ac_glc | ac_slc, true); |
| } |
| } |
| } |
| } |
| |
| static void |
| handle_ls_outputs_post(struct radv_shader_context *ctx) |
| { |
| LLVMValueRef vertex_id = ctx->rel_auto_id; |
| uint32_t num_tcs_inputs = util_last_bit64(ctx->shader_info->vs.ls_outputs_written); |
| LLVMValueRef vertex_dw_stride = LLVMConstInt(ctx->ac.i32, num_tcs_inputs * 4, false); |
| LLVMValueRef base_dw_addr = LLVMBuildMul(ctx->ac.builder, vertex_id, |
| vertex_dw_stride, ""); |
| |
| for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) { |
| LLVMValueRef *out_ptr = &ctx->abi.outputs[i * 4]; |
| |
| if (!(ctx->output_mask & (1ull << i))) |
| continue; |
| |
| int param = shader_io_get_unique_index(i); |
| LLVMValueRef dw_addr = LLVMBuildAdd(ctx->ac.builder, base_dw_addr, |
| LLVMConstInt(ctx->ac.i32, param * 4, false), |
| ""); |
| for (unsigned j = 0; j < 4; j++) { |
| LLVMValueRef value = LLVMBuildLoad(ctx->ac.builder, out_ptr[j], ""); |
| value = ac_to_integer(&ctx->ac, value); |
| value = LLVMBuildZExtOrBitCast(ctx->ac.builder, value, ctx->ac.i32, ""); |
| ac_lds_store(&ctx->ac, dw_addr, value); |
| dw_addr = LLVMBuildAdd(ctx->ac.builder, dw_addr, ctx->ac.i32_1, ""); |
| } |
| } |
| } |
| |
| static LLVMValueRef get_wave_id_in_tg(struct radv_shader_context *ctx) |
| { |
| return ac_unpack_param(&ctx->ac, ctx->merged_wave_info, 24, 4); |
| } |
| |
| static LLVMValueRef get_tgsize(struct radv_shader_context *ctx) |
| { |
| return ac_unpack_param(&ctx->ac, ctx->merged_wave_info, 28, 4); |
| } |
| |
| static LLVMValueRef get_thread_id_in_tg(struct radv_shader_context *ctx) |
| { |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef tmp; |
| tmp = LLVMBuildMul(builder, get_wave_id_in_tg(ctx), |
| LLVMConstInt(ctx->ac.i32, ctx->ac.wave_size, false), ""); |
| return LLVMBuildAdd(builder, tmp, ac_get_thread_id(&ctx->ac), ""); |
| } |
| |
| static LLVMValueRef ngg_get_vtx_cnt(struct radv_shader_context *ctx) |
| { |
| return ac_build_bfe(&ctx->ac, ctx->gs_tg_info, |
| LLVMConstInt(ctx->ac.i32, 12, false), |
| LLVMConstInt(ctx->ac.i32, 9, false), |
| false); |
| } |
| |
| static LLVMValueRef ngg_get_prim_cnt(struct radv_shader_context *ctx) |
| { |
| return ac_build_bfe(&ctx->ac, ctx->gs_tg_info, |
| LLVMConstInt(ctx->ac.i32, 22, false), |
| LLVMConstInt(ctx->ac.i32, 9, false), |
| false); |
| } |
| |
| static LLVMValueRef ngg_get_ordered_id(struct radv_shader_context *ctx) |
| { |
| return ac_build_bfe(&ctx->ac, ctx->gs_tg_info, |
| ctx->ac.i32_0, |
| LLVMConstInt(ctx->ac.i32, 11, false), |
| false); |
| } |
| |
| static LLVMValueRef |
| ngg_gs_get_vertex_storage(struct radv_shader_context *ctx) |
| { |
| unsigned num_outputs = util_bitcount64(ctx->output_mask); |
| |
| if (ctx->options->key.has_multiview_view_index) |
| num_outputs++; |
| |
| LLVMTypeRef elements[2] = { |
| LLVMArrayType(ctx->ac.i32, 4 * num_outputs), |
| LLVMArrayType(ctx->ac.i8, 4), |
| }; |
| LLVMTypeRef type = LLVMStructTypeInContext(ctx->ac.context, elements, 2, false); |
| type = LLVMPointerType(LLVMArrayType(type, 0), AC_ADDR_SPACE_LDS); |
| return LLVMBuildBitCast(ctx->ac.builder, ctx->gs_ngg_emit, type, ""); |
| } |
| |
| /** |
| * Return a pointer to the LDS storage reserved for the N'th vertex, where N |
| * is in emit order; that is: |
| * - during the epilogue, N is the threadidx (relative to the entire threadgroup) |
| * - during vertex emit, i.e. while the API GS shader invocation is running, |
| * N = threadidx * gs_max_out_vertices + emitidx |
| * |
| * Goals of the LDS memory layout: |
| * 1. Eliminate bank conflicts on write for geometry shaders that have all emits |
| * in uniform control flow |
| * 2. Eliminate bank conflicts on read for export if, additionally, there is no |
| * culling |
| * 3. Agnostic to the number of waves (since we don't know it before compiling) |
| * 4. Allow coalescing of LDS instructions (ds_write_b128 etc.) |
| * 5. Avoid wasting memory. |
| * |
| * We use an AoS layout due to point 4 (this also helps point 3). In an AoS |
| * layout, elimination of bank conflicts requires that each vertex occupy an |
| * odd number of dwords. We use the additional dword to store the output stream |
| * index as well as a flag to indicate whether this vertex ends a primitive |
| * for rasterization. |
| * |
| * Swizzling is required to satisfy points 1 and 2 simultaneously. |
| * |
| * Vertices are stored in export order (gsthread * gs_max_out_vertices + emitidx). |
| * Indices are swizzled in groups of 32, which ensures point 1 without |
| * disturbing point 2. |
| * |
| * \return an LDS pointer to type {[N x i32], [4 x i8]} |
| */ |
| static LLVMValueRef |
| ngg_gs_vertex_ptr(struct radv_shader_context *ctx, LLVMValueRef vertexidx) |
| { |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef storage = ngg_gs_get_vertex_storage(ctx); |
| |
| /* gs_max_out_vertices = 2^(write_stride_2exp) * some odd number */ |
| unsigned write_stride_2exp = ffs(ctx->shader->info.gs.vertices_out) - 1; |
| if (write_stride_2exp) { |
| LLVMValueRef row = |
| LLVMBuildLShr(builder, vertexidx, |
| LLVMConstInt(ctx->ac.i32, 5, false), ""); |
| LLVMValueRef swizzle = |
| LLVMBuildAnd(builder, row, |
| LLVMConstInt(ctx->ac.i32, (1u << write_stride_2exp) - 1, |
| false), ""); |
| vertexidx = LLVMBuildXor(builder, vertexidx, swizzle, ""); |
| } |
| |
| return ac_build_gep0(&ctx->ac, storage, vertexidx); |
| } |
| |
| static LLVMValueRef |
| ngg_gs_emit_vertex_ptr(struct radv_shader_context *ctx, LLVMValueRef gsthread, |
| LLVMValueRef emitidx) |
| { |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef tmp; |
| |
| tmp = LLVMConstInt(ctx->ac.i32, ctx->shader->info.gs.vertices_out, false); |
| tmp = LLVMBuildMul(builder, tmp, gsthread, ""); |
| const LLVMValueRef vertexidx = LLVMBuildAdd(builder, tmp, emitidx, ""); |
| return ngg_gs_vertex_ptr(ctx, vertexidx); |
| } |
| |
| /* Send GS Alloc Req message from the first wave of the group to SPI. |
| * Message payload is: |
| * - bits 0..10: vertices in group |
| * - bits 12..22: primitives in group |
| */ |
| static void build_sendmsg_gs_alloc_req(struct radv_shader_context *ctx, |
| LLVMValueRef vtx_cnt, |
| LLVMValueRef prim_cnt) |
| { |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef tmp; |
| |
| tmp = LLVMBuildICmp(builder, LLVMIntEQ, get_wave_id_in_tg(ctx), ctx->ac.i32_0, ""); |
| ac_build_ifcc(&ctx->ac, tmp, 5020); |
| |
| tmp = LLVMBuildShl(builder, prim_cnt, LLVMConstInt(ctx->ac.i32, 12, false),""); |
| tmp = LLVMBuildOr(builder, tmp, vtx_cnt, ""); |
| ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_ALLOC_REQ, tmp); |
| |
| ac_build_endif(&ctx->ac, 5020); |
| } |
| |
| struct ngg_prim { |
| unsigned num_vertices; |
| LLVMValueRef isnull; |
| LLVMValueRef index[3]; |
| LLVMValueRef edgeflag[3]; |
| }; |
| |
| static void build_export_prim(struct radv_shader_context *ctx, |
| const struct ngg_prim *prim) |
| { |
| LLVMBuilderRef builder = ctx->ac.builder; |
| struct ac_export_args args; |
| LLVMValueRef tmp; |
| |
| tmp = LLVMBuildZExt(builder, prim->isnull, ctx->ac.i32, ""); |
| args.out[0] = LLVMBuildShl(builder, tmp, LLVMConstInt(ctx->ac.i32, 31, false), ""); |
| |
| for (unsigned i = 0; i < prim->num_vertices; ++i) { |
| tmp = LLVMBuildShl(builder, prim->index[i], |
| LLVMConstInt(ctx->ac.i32, 10 * i, false), ""); |
| args.out[0] = LLVMBuildOr(builder, args.out[0], tmp, ""); |
| tmp = LLVMBuildZExt(builder, prim->edgeflag[i], ctx->ac.i32, ""); |
| tmp = LLVMBuildShl(builder, tmp, |
| LLVMConstInt(ctx->ac.i32, 10 * i + 9, false), ""); |
| args.out[0] = LLVMBuildOr(builder, args.out[0], tmp, ""); |
| } |
| |
| args.out[0] = LLVMBuildBitCast(builder, args.out[0], ctx->ac.f32, ""); |
| args.out[1] = LLVMGetUndef(ctx->ac.f32); |
| args.out[2] = LLVMGetUndef(ctx->ac.f32); |
| args.out[3] = LLVMGetUndef(ctx->ac.f32); |
| |
| args.target = V_008DFC_SQ_EXP_PRIM; |
| args.enabled_channels = 1; |
| args.done = true; |
| args.valid_mask = false; |
| args.compr = false; |
| |
| ac_build_export(&ctx->ac, &args); |
| } |
| |
| static struct radv_stream_output * |
| radv_get_stream_output_by_loc(struct radv_streamout_info *so, unsigned location) |
| { |
| for (unsigned i = 0; i < so->num_outputs; ++i) { |
| if (so->outputs[i].location == location) |
| return &so->outputs[i]; |
| } |
| |
| return NULL; |
| } |
| |
| static void build_streamout_vertex(struct radv_shader_context *ctx, |
| LLVMValueRef *so_buffer, LLVMValueRef *wg_offset_dw, |
| unsigned stream, LLVMValueRef offset_vtx, |
| LLVMValueRef vertexptr) |
| { |
| struct radv_streamout_info *so = &ctx->shader_info->so; |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef offset[4] = {}; |
| LLVMValueRef tmp; |
| |
| for (unsigned buffer = 0; buffer < 4; ++buffer) { |
| if (!wg_offset_dw[buffer]) |
| continue; |
| |
| tmp = LLVMBuildMul(builder, offset_vtx, |
| LLVMConstInt(ctx->ac.i32, so->strides[buffer], false), ""); |
| tmp = LLVMBuildAdd(builder, wg_offset_dw[buffer], tmp, ""); |
| offset[buffer] = LLVMBuildShl(builder, tmp, LLVMConstInt(ctx->ac.i32, 2, false), ""); |
| } |
| |
| if (ctx->stage == MESA_SHADER_GEOMETRY) { |
| struct radv_shader_output_values outputs[AC_LLVM_MAX_OUTPUTS]; |
| unsigned noutput = 0; |
| unsigned out_idx = 0; |
| |
| for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) { |
| unsigned output_usage_mask = |
| ctx->shader_info->gs.output_usage_mask[i]; |
| uint8_t output_stream = |
| output_stream = ctx->shader_info->gs.output_streams[i]; |
| |
| if (!(ctx->output_mask & (1ull << i)) || |
| output_stream != stream) |
| continue; |
| |
| outputs[noutput].slot_name = i; |
| outputs[noutput].slot_index = i == VARYING_SLOT_CLIP_DIST1; |
| outputs[noutput].usage_mask = output_usage_mask; |
| |
| int length = util_last_bit(output_usage_mask); |
| |
| for (unsigned j = 0; j < length; j++, out_idx++) { |
| if (!(output_usage_mask & (1 << j))) |
| continue; |
| |
| tmp = ac_build_gep0(&ctx->ac, vertexptr, |
| LLVMConstInt(ctx->ac.i32, out_idx, false)); |
| outputs[noutput].values[j] = LLVMBuildLoad(builder, tmp, ""); |
| } |
| |
| for (unsigned j = length; j < 4; j++) |
| outputs[noutput].values[j] = LLVMGetUndef(ctx->ac.f32); |
| |
| noutput++; |
| } |
| |
| for (unsigned i = 0; i < noutput; i++) { |
| struct radv_stream_output *output = |
| radv_get_stream_output_by_loc(so, outputs[i].slot_name); |
| |
| if (!output || |
| output->stream != stream) |
| continue; |
| |
| struct radv_shader_output_values out = {}; |
| |
| for (unsigned j = 0; j < 4; j++) { |
| out.values[j] = outputs[i].values[j]; |
| } |
| |
| radv_emit_stream_output(ctx, so_buffer, offset, output, &out); |
| } |
| } else { |
| for (unsigned i = 0; i < so->num_outputs; ++i) { |
| struct radv_stream_output *output = |
| &ctx->shader_info->so.outputs[i]; |
| |
| if (stream != output->stream) |
| continue; |
| |
| struct radv_shader_output_values out = {}; |
| |
| for (unsigned comp = 0; comp < 4; comp++) { |
| if (!(output->component_mask & (1 << comp))) |
| continue; |
| |
| tmp = ac_build_gep0(&ctx->ac, vertexptr, |
| LLVMConstInt(ctx->ac.i32, 4 * i + comp, false)); |
| out.values[comp] = LLVMBuildLoad(builder, tmp, ""); |
| } |
| |
| radv_emit_stream_output(ctx, so_buffer, offset, output, &out); |
| } |
| } |
| } |
| |
| struct ngg_streamout { |
| LLVMValueRef num_vertices; |
| |
| /* per-thread data */ |
| LLVMValueRef prim_enable[4]; /* i1 per stream */ |
| LLVMValueRef vertices[3]; /* [N x i32] addrspace(LDS)* */ |
| |
| /* Output */ |
| LLVMValueRef emit[4]; /* per-stream emitted primitives (only valid for used streams) */ |
| }; |
| |
| /** |
| * Build streamout logic. |
| * |
| * Implies a barrier. |
| * |
| * Writes number of emitted primitives to gs_ngg_scratch[4:7]. |
| * |
| * Clobbers gs_ngg_scratch[8:]. |
| */ |
| static void build_streamout(struct radv_shader_context *ctx, |
| struct ngg_streamout *nggso) |
| { |
| struct radv_streamout_info *so = &ctx->shader_info->so; |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef buf_ptr = ctx->streamout_buffers; |
| LLVMValueRef tid = get_thread_id_in_tg(ctx); |
| LLVMValueRef cond, tmp, tmp2; |
| LLVMValueRef i32_2 = LLVMConstInt(ctx->ac.i32, 2, false); |
| LLVMValueRef i32_4 = LLVMConstInt(ctx->ac.i32, 4, false); |
| LLVMValueRef i32_8 = LLVMConstInt(ctx->ac.i32, 8, false); |
| LLVMValueRef so_buffer[4] = {}; |
| unsigned max_num_vertices = 1 + (nggso->vertices[1] ? 1 : 0) + |
| (nggso->vertices[2] ? 1 : 0); |
| LLVMValueRef prim_stride_dw[4] = {}; |
| LLVMValueRef prim_stride_dw_vgpr = LLVMGetUndef(ctx->ac.i32); |
| int stream_for_buffer[4] = { -1, -1, -1, -1 }; |
| unsigned bufmask_for_stream[4] = {}; |
| bool isgs = ctx->stage == MESA_SHADER_GEOMETRY; |
| unsigned scratch_emit_base = isgs ? 4 : 0; |
| LLVMValueRef scratch_emit_basev = isgs ? i32_4 : ctx->ac.i32_0; |
| unsigned scratch_offset_base = isgs ? 8 : 4; |
| LLVMValueRef scratch_offset_basev = isgs ? i32_8 : i32_4; |
| |
| ac_llvm_add_target_dep_function_attr(ctx->main_function, |
| "amdgpu-gds-size", 256); |
| |
| /* Determine the mapping of streamout buffers to vertex streams. */ |
| for (unsigned i = 0; i < so->num_outputs; ++i) { |
| unsigned buf = so->outputs[i].buffer; |
| unsigned stream = so->outputs[i].stream; |
| assert(stream_for_buffer[buf] < 0 || stream_for_buffer[buf] == stream); |
| stream_for_buffer[buf] = stream; |
| bufmask_for_stream[stream] |= 1 << buf; |
| } |
| |
| for (unsigned buffer = 0; buffer < 4; ++buffer) { |
| if (stream_for_buffer[buffer] == -1) |
| continue; |
| |
| assert(so->strides[buffer]); |
| |
| LLVMValueRef stride_for_buffer = |
| LLVMConstInt(ctx->ac.i32, so->strides[buffer], false); |
| prim_stride_dw[buffer] = |
| LLVMBuildMul(builder, stride_for_buffer, |
| nggso->num_vertices, ""); |
| prim_stride_dw_vgpr = ac_build_writelane( |
| &ctx->ac, prim_stride_dw_vgpr, prim_stride_dw[buffer], |
| LLVMConstInt(ctx->ac.i32, buffer, false)); |
| |
| LLVMValueRef offset = LLVMConstInt(ctx->ac.i32, buffer, false); |
| so_buffer[buffer] = ac_build_load_to_sgpr(&ctx->ac, buf_ptr, |
| offset); |
| } |
| |
| cond = LLVMBuildICmp(builder, LLVMIntEQ, get_wave_id_in_tg(ctx), ctx->ac.i32_0, ""); |
| ac_build_ifcc(&ctx->ac, cond, 5200); |
| { |
| LLVMTypeRef gdsptr = LLVMPointerType(ctx->ac.i32, AC_ADDR_SPACE_GDS); |
| LLVMValueRef gdsbase = LLVMBuildIntToPtr(builder, ctx->ac.i32_0, gdsptr, ""); |
| |
| /* Advance the streamout offsets in GDS. */ |
| LLVMValueRef offsets_vgpr = ac_build_alloca_undef(&ctx->ac, ctx->ac.i32, ""); |
| LLVMValueRef generated_by_stream_vgpr = ac_build_alloca_undef(&ctx->ac, ctx->ac.i32, ""); |
| |
| cond = LLVMBuildICmp(builder, LLVMIntULT, ac_get_thread_id(&ctx->ac), i32_4, ""); |
| ac_build_ifcc(&ctx->ac, cond, 5210); |
| { |
| /* Fetch the number of generated primitives and store |
| * it in GDS for later use. |
| */ |
| if (isgs) { |
| tmp = ac_build_gep0(&ctx->ac, ctx->gs_ngg_scratch, tid); |
| tmp = LLVMBuildLoad(builder, tmp, ""); |
| } else { |
| tmp = ac_build_writelane(&ctx->ac, ctx->ac.i32_0, |
| ngg_get_prim_cnt(ctx), ctx->ac.i32_0); |
| } |
| LLVMBuildStore(builder, tmp, generated_by_stream_vgpr); |
| |
| unsigned swizzle[4]; |
| int unused_stream = -1; |
| for (unsigned stream = 0; stream < 4; ++stream) { |
| if (!ctx->shader_info->gs.num_stream_output_components[stream]) { |
| unused_stream = stream; |
| break; |
| } |
| } |
| for (unsigned buffer = 0; buffer < 4; ++buffer) { |
| if (stream_for_buffer[buffer] >= 0) { |
| swizzle[buffer] = stream_for_buffer[buffer]; |
| } else { |
| assert(unused_stream >= 0); |
| swizzle[buffer] = unused_stream; |
| } |
| } |
| |
| tmp = ac_build_quad_swizzle(&ctx->ac, tmp, |
| swizzle[0], swizzle[1], swizzle[2], swizzle[3]); |
| tmp = LLVMBuildMul(builder, tmp, prim_stride_dw_vgpr, ""); |
| |
| LLVMValueRef args[] = { |
| LLVMBuildIntToPtr(builder, ngg_get_ordered_id(ctx), gdsptr, ""), |
| tmp, |
| ctx->ac.i32_0, // ordering |
| ctx->ac.i32_0, // scope |
| ctx->ac.i1false, // isVolatile |
| LLVMConstInt(ctx->ac.i32, 4 << 24, false), // OA index |
| ctx->ac.i1true, // wave release |
| ctx->ac.i1true, // wave done |
| }; |
| |
| tmp = ac_build_intrinsic(&ctx->ac, "llvm.amdgcn.ds.ordered.add", |
| ctx->ac.i32, args, ARRAY_SIZE(args), 0); |
| |
| /* Keep offsets in a VGPR for quick retrieval via readlane by |
| * the first wave for bounds checking, and also store in LDS |
| * for retrieval by all waves later. */ |
| LLVMBuildStore(builder, tmp, offsets_vgpr); |
| |
| tmp2 = LLVMBuildAdd(builder, ac_get_thread_id(&ctx->ac), |
| scratch_offset_basev, ""); |
| tmp2 = ac_build_gep0(&ctx->ac, ctx->gs_ngg_scratch, tmp2); |
| LLVMBuildStore(builder, tmp, tmp2); |
| } |
| ac_build_endif(&ctx->ac, 5210); |
| |
| /* Determine the max emit per buffer. This is done via the SALU, in part |
| * because LLVM can't generate divide-by-multiply if we try to do this |
| * via VALU with one lane per buffer. |
| */ |
| LLVMValueRef max_emit[4] = {}; |
| for (unsigned buffer = 0; buffer < 4; ++buffer) { |
| if (stream_for_buffer[buffer] == -1) |
| continue; |
| |
| /* Compute the streamout buffer size in DWORD. */ |
| LLVMValueRef bufsize_dw = |
| LLVMBuildLShr(builder, |
| LLVMBuildExtractElement(builder, so_buffer[buffer], i32_2, ""), |
| i32_2, ""); |
| |
| /* Load the streamout buffer offset from GDS. */ |
| tmp = LLVMBuildLoad(builder, offsets_vgpr, ""); |
| LLVMValueRef offset_dw = |
| ac_build_readlane(&ctx->ac, tmp, |
| LLVMConstInt(ctx->ac.i32, buffer, false)); |
| |
| /* Compute the remaining size to emit. */ |
| LLVMValueRef remaining_dw = |
| LLVMBuildSub(builder, bufsize_dw, offset_dw, ""); |
| tmp = LLVMBuildUDiv(builder, remaining_dw, |
| prim_stride_dw[buffer], ""); |
| |
| cond = LLVMBuildICmp(builder, LLVMIntULT, |
| bufsize_dw, offset_dw, ""); |
| max_emit[buffer] = LLVMBuildSelect(builder, cond, |
| ctx->ac.i32_0, tmp, ""); |
| } |
| |
| /* Determine the number of emitted primitives per stream and fixup the |
| * GDS counter if necessary. |
| * |
| * This is complicated by the fact that a single stream can emit to |
| * multiple buffers (but luckily not vice versa). |
| */ |
| LLVMValueRef emit_vgpr = ctx->ac.i32_0; |
| |
| for (unsigned stream = 0; stream < 4; ++stream) { |
| if (!ctx->shader_info->gs.num_stream_output_components[stream]) |
| continue; |
| |
| /* Load the number of generated primitives from GDS and |
| * determine that number for the given stream. |
| */ |
| tmp = LLVMBuildLoad(builder, generated_by_stream_vgpr, ""); |
| LLVMValueRef generated = |
| ac_build_readlane(&ctx->ac, tmp, |
| LLVMConstInt(ctx->ac.i32, stream, false)); |
| |
| |
| /* Compute the number of emitted primitives. */ |
| LLVMValueRef emit = generated; |
| for (unsigned buffer = 0; buffer < 4; ++buffer) { |
| if (stream_for_buffer[buffer] == stream) |
| emit = ac_build_umin(&ctx->ac, emit, max_emit[buffer]); |
| } |
| |
| /* Store the number of emitted primitives for that |
| * stream. |
| */ |
| emit_vgpr = ac_build_writelane(&ctx->ac, emit_vgpr, emit, |
| LLVMConstInt(ctx->ac.i32, stream, false)); |
| |
| /* Fixup the offset using a plain GDS atomic if we overflowed. */ |
| cond = LLVMBuildICmp(builder, LLVMIntULT, emit, generated, ""); |
| ac_build_ifcc(&ctx->ac, cond, 5221); /* scalar branch */ |
| tmp = LLVMBuildLShr(builder, |
| LLVMConstInt(ctx->ac.i32, bufmask_for_stream[stream], false), |
| ac_get_thread_id(&ctx->ac), ""); |
| tmp = LLVMBuildTrunc(builder, tmp, ctx->ac.i1, ""); |
| ac_build_ifcc(&ctx->ac, tmp, 5222); |
| { |
| tmp = LLVMBuildSub(builder, generated, emit, ""); |
| tmp = LLVMBuildMul(builder, tmp, prim_stride_dw_vgpr, ""); |
| tmp2 = LLVMBuildGEP(builder, gdsbase, &tid, 1, ""); |
| LLVMBuildAtomicRMW(builder, LLVMAtomicRMWBinOpSub, tmp2, tmp, |
| LLVMAtomicOrderingMonotonic, false); |
| } |
| ac_build_endif(&ctx->ac, 5222); |
| ac_build_endif(&ctx->ac, 5221); |
| } |
| |
| /* Store the number of emitted primitives to LDS for later use. */ |
| cond = LLVMBuildICmp(builder, LLVMIntULT, ac_get_thread_id(&ctx->ac), i32_4, ""); |
| ac_build_ifcc(&ctx->ac, cond, 5225); |
| { |
| tmp = LLVMBuildAdd(builder, ac_get_thread_id(&ctx->ac), |
| scratch_emit_basev, ""); |
| tmp = ac_build_gep0(&ctx->ac, ctx->gs_ngg_scratch, tmp); |
| LLVMBuildStore(builder, emit_vgpr, tmp); |
| } |
| ac_build_endif(&ctx->ac, 5225); |
| } |
| ac_build_endif(&ctx->ac, 5200); |
| |
| /* Determine the workgroup-relative per-thread / primitive offset into |
| * the streamout buffers */ |
| struct ac_wg_scan primemit_scan[4] = {}; |
| |
| if (isgs) { |
| for (unsigned stream = 0; stream < 4; ++stream) { |
| if (!ctx->shader_info->gs.num_stream_output_components[stream]) |
| continue; |
| |
| primemit_scan[stream].enable_exclusive = true; |
| primemit_scan[stream].op = nir_op_iadd; |
| primemit_scan[stream].src = nggso->prim_enable[stream]; |
| primemit_scan[stream].scratch = |
| ac_build_gep0(&ctx->ac, ctx->gs_ngg_scratch, |
| LLVMConstInt(ctx->ac.i32, 12 + 8 * stream, false)); |
| primemit_scan[stream].waveidx = get_wave_id_in_tg(ctx); |
| primemit_scan[stream].numwaves = get_tgsize(ctx); |
| primemit_scan[stream].maxwaves = 8; |
| ac_build_wg_scan_top(&ctx->ac, &primemit_scan[stream]); |
| } |
| } |
| |
| ac_build_s_barrier(&ctx->ac); |
| |
| /* Fetch the per-buffer offsets and per-stream emit counts in all waves. */ |
| LLVMValueRef wgoffset_dw[4] = {}; |
| |
| { |
| LLVMValueRef scratch_vgpr; |
| |
| tmp = ac_build_gep0(&ctx->ac, ctx->gs_ngg_scratch, ac_get_thread_id(&ctx->ac)); |
| scratch_vgpr = LLVMBuildLoad(builder, tmp, ""); |
| |
| for (unsigned buffer = 0; buffer < 4; ++buffer) { |
| if (stream_for_buffer[buffer] >= 0) { |
| wgoffset_dw[buffer] = ac_build_readlane( |
| &ctx->ac, scratch_vgpr, |
| LLVMConstInt(ctx->ac.i32, scratch_offset_base + buffer, false)); |
| } |
| } |
| |
| for (unsigned stream = 0; stream < 4; ++stream) { |
| if (ctx->shader_info->gs.num_stream_output_components[stream]) { |
| nggso->emit[stream] = ac_build_readlane( |
| &ctx->ac, scratch_vgpr, |
| LLVMConstInt(ctx->ac.i32, scratch_emit_base + stream, false)); |
| } |
| } |
| } |
| |
| /* Write out primitive data */ |
| for (unsigned stream = 0; stream < 4; ++stream) { |
| if (!ctx->shader_info->gs.num_stream_output_components[stream]) |
| continue; |
| |
| if (isgs) { |
| ac_build_wg_scan_bottom(&ctx->ac, &primemit_scan[stream]); |
| } else { |
| primemit_scan[stream].result_exclusive = tid; |
| } |
| |
| cond = LLVMBuildICmp(builder, LLVMIntULT, |
| primemit_scan[stream].result_exclusive, |
| nggso->emit[stream], ""); |
| cond = LLVMBuildAnd(builder, cond, nggso->prim_enable[stream], ""); |
| ac_build_ifcc(&ctx->ac, cond, 5240); |
| { |
| LLVMValueRef offset_vtx = |
| LLVMBuildMul(builder, primemit_scan[stream].result_exclusive, |
| nggso->num_vertices, ""); |
| |
| for (unsigned i = 0; i < max_num_vertices; ++i) { |
| cond = LLVMBuildICmp(builder, LLVMIntULT, |
| LLVMConstInt(ctx->ac.i32, i, false), |
| nggso->num_vertices, ""); |
| ac_build_ifcc(&ctx->ac, cond, 5241); |
| build_streamout_vertex(ctx, so_buffer, wgoffset_dw, |
| stream, offset_vtx, nggso->vertices[i]); |
| ac_build_endif(&ctx->ac, 5241); |
| offset_vtx = LLVMBuildAdd(builder, offset_vtx, ctx->ac.i32_1, ""); |
| } |
| } |
| ac_build_endif(&ctx->ac, 5240); |
| } |
| } |
| |
| static unsigned ngg_nogs_vertex_size(struct radv_shader_context *ctx) |
| { |
| unsigned lds_vertex_size = 0; |
| |
| if (ctx->shader_info->so.num_outputs) |
| lds_vertex_size = 4 * ctx->shader_info->so.num_outputs + 1; |
| |
| return lds_vertex_size; |
| } |
| |
| /** |
| * Returns an `[N x i32] addrspace(LDS)*` pointing at contiguous LDS storage |
| * for the vertex outputs. |
| */ |
| static LLVMValueRef ngg_nogs_vertex_ptr(struct radv_shader_context *ctx, |
| LLVMValueRef vtxid) |
| { |
| /* The extra dword is used to avoid LDS bank conflicts. */ |
| unsigned vertex_size = ngg_nogs_vertex_size(ctx); |
| LLVMTypeRef ai32 = LLVMArrayType(ctx->ac.i32, vertex_size); |
| LLVMTypeRef pai32 = LLVMPointerType(ai32, AC_ADDR_SPACE_LDS); |
| LLVMValueRef tmp = LLVMBuildBitCast(ctx->ac.builder, ctx->esgs_ring, pai32, ""); |
| return LLVMBuildGEP(ctx->ac.builder, tmp, &vtxid, 1, ""); |
| } |
| |
| static void |
| handle_ngg_outputs_post_1(struct radv_shader_context *ctx) |
| { |
| struct radv_streamout_info *so = &ctx->shader_info->so; |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef vertex_ptr = NULL; |
| LLVMValueRef tmp, tmp2; |
| |
| assert((ctx->stage == MESA_SHADER_VERTEX || |
| ctx->stage == MESA_SHADER_TESS_EVAL) && !ctx->is_gs_copy_shader); |
| |
| if (!ctx->shader_info->so.num_outputs) |
| return; |
| |
| vertex_ptr = ngg_nogs_vertex_ptr(ctx, get_thread_id_in_tg(ctx)); |
| |
| for (unsigned i = 0; i < so->num_outputs; ++i) { |
| struct radv_stream_output *output = |
| &ctx->shader_info->so.outputs[i]; |
| |
| unsigned loc = output->location; |
| |
| for (unsigned comp = 0; comp < 4; comp++) { |
| if (!(output->component_mask & (1 << comp))) |
| continue; |
| |
| tmp = ac_build_gep0(&ctx->ac, vertex_ptr, |
| LLVMConstInt(ctx->ac.i32, 4 * i + comp, false)); |
| tmp2 = LLVMBuildLoad(builder, |
| ctx->abi.outputs[4 * loc + comp], ""); |
| tmp2 = ac_to_integer(&ctx->ac, tmp2); |
| LLVMBuildStore(builder, tmp2, tmp); |
| } |
| } |
| } |
| |
| static void |
| handle_ngg_outputs_post_2(struct radv_shader_context *ctx) |
| { |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef tmp; |
| |
| assert((ctx->stage == MESA_SHADER_VERTEX || |
| ctx->stage == MESA_SHADER_TESS_EVAL) && !ctx->is_gs_copy_shader); |
| |
| LLVMValueRef prims_in_wave = ac_unpack_param(&ctx->ac, ctx->merged_wave_info, 8, 8); |
| LLVMValueRef vtx_in_wave = ac_unpack_param(&ctx->ac, ctx->merged_wave_info, 0, 8); |
| LLVMValueRef is_gs_thread = LLVMBuildICmp(builder, LLVMIntULT, |
| ac_get_thread_id(&ctx->ac), prims_in_wave, ""); |
| LLVMValueRef is_es_thread = LLVMBuildICmp(builder, LLVMIntULT, |
| ac_get_thread_id(&ctx->ac), vtx_in_wave, ""); |
| LLVMValueRef vtxindex[] = { |
| ac_unpack_param(&ctx->ac, ctx->gs_vtx_offset[0], 0, 16), |
| ac_unpack_param(&ctx->ac, ctx->gs_vtx_offset[0], 16, 16), |
| ac_unpack_param(&ctx->ac, ctx->gs_vtx_offset[2], 0, 16), |
| }; |
| |
| /* Determine the number of vertices per primitive. */ |
| unsigned num_vertices; |
| LLVMValueRef num_vertices_val; |
| |
| if (ctx->stage == MESA_SHADER_VERTEX) { |
| LLVMValueRef outprim_val = |
| LLVMConstInt(ctx->ac.i32, |
| ctx->options->key.vs.outprim, false); |
| num_vertices_val = LLVMBuildAdd(builder, outprim_val, |
| ctx->ac.i32_1, ""); |
| num_vertices = 3; /* TODO: optimize for points & lines */ |
| } else { |
| assert(ctx->stage == MESA_SHADER_TESS_EVAL); |
| |
| if (ctx->shader->info.tess.point_mode) |
| num_vertices = 1; |
| else if (ctx->shader->info.tess.primitive_mode == GL_ISOLINES) |
| num_vertices = 2; |
| else |
| num_vertices = 3; |
| |
| num_vertices_val = LLVMConstInt(ctx->ac.i32, num_vertices, false); |
| } |
| |
| /* Streamout */ |
| if (ctx->shader_info->so.num_outputs) { |
| struct ngg_streamout nggso = {}; |
| |
| nggso.num_vertices = num_vertices_val; |
| nggso.prim_enable[0] = is_gs_thread; |
| |
| for (unsigned i = 0; i < num_vertices; ++i) |
| nggso.vertices[i] = ngg_nogs_vertex_ptr(ctx, vtxindex[i]); |
| |
| build_streamout(ctx, &nggso); |
| } |
| |
| /* Copy Primitive IDs from GS threads to the LDS address corresponding |
| * to the ES thread of the provoking vertex. |
| */ |
| if (ctx->stage == MESA_SHADER_VERTEX && |
| ctx->options->key.vs_common_out.export_prim_id) { |
| if (ctx->shader_info->so.num_outputs) |
| ac_build_s_barrier(&ctx->ac); |
| |
| ac_build_ifcc(&ctx->ac, is_gs_thread, 5400); |
| /* Extract the PROVOKING_VTX_INDEX field. */ |
| LLVMValueRef provoking_vtx_in_prim = |
| LLVMConstInt(ctx->ac.i32, 0, false); |
| |
| /* provoking_vtx_index = vtxindex[provoking_vtx_in_prim]; */ |
| LLVMValueRef indices = ac_build_gather_values(&ctx->ac, vtxindex, 3); |
| LLVMValueRef provoking_vtx_index = |
| LLVMBuildExtractElement(builder, indices, provoking_vtx_in_prim, ""); |
| |
| LLVMBuildStore(builder, ctx->abi.gs_prim_id, |
| ac_build_gep0(&ctx->ac, ctx->esgs_ring, provoking_vtx_index)); |
| ac_build_endif(&ctx->ac, 5400); |
| } |
| |
| /* TODO: primitive culling */ |
| |
| build_sendmsg_gs_alloc_req(ctx, ngg_get_vtx_cnt(ctx), ngg_get_prim_cnt(ctx)); |
| |
| /* TODO: streamout queries */ |
| /* Export primitive data to the index buffer. Format is: |
| * - bits 0..8: index 0 |
| * - bit 9: edge flag 0 |
| * - bits 10..18: index 1 |
| * - bit 19: edge flag 1 |
| * - bits 20..28: index 2 |
| * - bit 29: edge flag 2 |
| * - bit 31: null primitive (skip) |
| * |
| * For the first version, we will always build up all three indices |
| * independent of the primitive type. The additional garbage data |
| * shouldn't hurt. |
| * |
| * TODO: culling depends on the primitive type, so can have some |
| * interaction here. |
| */ |
| ac_build_ifcc(&ctx->ac, is_gs_thread, 6001); |
| { |
| struct ngg_prim prim = {}; |
| |
| prim.num_vertices = num_vertices; |
| prim.isnull = ctx->ac.i1false; |
| memcpy(prim.index, vtxindex, sizeof(vtxindex[0]) * 3); |
| |
| for (unsigned i = 0; i < num_vertices; ++i) { |
| tmp = LLVMBuildLShr(builder, ctx->abi.gs_invocation_id, |
| LLVMConstInt(ctx->ac.i32, 8 + i, false), ""); |
| prim.edgeflag[i] = LLVMBuildTrunc(builder, tmp, ctx->ac.i1, ""); |
| } |
| |
| build_export_prim(ctx, &prim); |
| } |
| ac_build_endif(&ctx->ac, 6001); |
| |
| /* Export per-vertex data (positions and parameters). */ |
| ac_build_ifcc(&ctx->ac, is_es_thread, 6002); |
| { |
| struct radv_vs_output_info *outinfo = |
| ctx->stage == MESA_SHADER_TESS_EVAL ? &ctx->shader_info->tes.outinfo : &ctx->shader_info->vs.outinfo; |
| |
| /* Exporting the primitive ID is handled below. */ |
| /* TODO: use the new VS export path */ |
| handle_vs_outputs_post(ctx, false, |
| ctx->options->key.vs_common_out.export_clip_dists, |
| outinfo); |
| |
| if (ctx->options->key.vs_common_out.export_prim_id) { |
| unsigned param_count = outinfo->param_exports; |
| LLVMValueRef values[4]; |
| |
| if (ctx->stage == MESA_SHADER_VERTEX) { |
| /* Wait for GS stores to finish. */ |
| ac_build_s_barrier(&ctx->ac); |
| |
| tmp = ac_build_gep0(&ctx->ac, ctx->esgs_ring, |
| get_thread_id_in_tg(ctx)); |
| values[0] = LLVMBuildLoad(builder, tmp, ""); |
| } else { |
| assert(ctx->stage == MESA_SHADER_TESS_EVAL); |
| values[0] = ctx->abi.tes_patch_id; |
| } |
| |
| values[0] = ac_to_float(&ctx->ac, values[0]); |
| for (unsigned j = 1; j < 4; j++) |
| values[j] = ctx->ac.f32_0; |
| |
| radv_export_param(ctx, param_count, values, 0x1); |
| |
| outinfo->vs_output_param_offset[VARYING_SLOT_PRIMITIVE_ID] = param_count++; |
| outinfo->param_exports = param_count; |
| } |
| } |
| ac_build_endif(&ctx->ac, 6002); |
| } |
| |
| static void gfx10_ngg_gs_emit_prologue(struct radv_shader_context *ctx) |
| { |
| /* Zero out the part of LDS scratch that is used to accumulate the |
| * per-stream generated primitive count. |
| */ |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef scratchptr = ctx->gs_ngg_scratch; |
| LLVMValueRef tid = get_thread_id_in_tg(ctx); |
| LLVMBasicBlockRef merge_block; |
| LLVMValueRef cond; |
| |
| LLVMValueRef fn = LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx->ac.builder)); |
| LLVMBasicBlockRef then_block = LLVMAppendBasicBlockInContext(ctx->ac.context, fn, ""); |
| merge_block = LLVMAppendBasicBlockInContext(ctx->ac.context, fn, ""); |
| |
| cond = LLVMBuildICmp(builder, LLVMIntULT, tid, LLVMConstInt(ctx->ac.i32, 4, false), ""); |
| LLVMBuildCondBr(ctx->ac.builder, cond, then_block, merge_block); |
| LLVMPositionBuilderAtEnd(ctx->ac.builder, then_block); |
| |
| LLVMValueRef ptr = ac_build_gep0(&ctx->ac, scratchptr, tid); |
| LLVMBuildStore(builder, ctx->ac.i32_0, ptr); |
| |
| LLVMBuildBr(ctx->ac.builder, merge_block); |
| LLVMPositionBuilderAtEnd(ctx->ac.builder, merge_block); |
| |
| ac_build_s_barrier(&ctx->ac); |
| } |
| |
| static void gfx10_ngg_gs_emit_epilogue_1(struct radv_shader_context *ctx) |
| { |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef i8_0 = LLVMConstInt(ctx->ac.i8, 0, false); |
| LLVMValueRef tmp; |
| |
| /* Zero out remaining (non-emitted) primitive flags. |
| * |
| * Note: Alternatively, we could pass the relevant gs_next_vertex to |
| * the emit threads via LDS. This is likely worse in the expected |
| * typical case where each GS thread emits the full set of |
| * vertices. |
| */ |
| for (unsigned stream = 0; stream < 4; ++stream) { |
| unsigned num_components; |
| |
| num_components = |
| ctx->shader_info->gs.num_stream_output_components[stream]; |
| if (!num_components) |
| continue; |
| |
| const LLVMValueRef gsthread = get_thread_id_in_tg(ctx); |
| |
| ac_build_bgnloop(&ctx->ac, 5100); |
| |
| const LLVMValueRef vertexidx = |
| LLVMBuildLoad(builder, ctx->gs_next_vertex[stream], ""); |
| tmp = LLVMBuildICmp(builder, LLVMIntUGE, vertexidx, |
| LLVMConstInt(ctx->ac.i32, ctx->shader->info.gs.vertices_out, false), ""); |
| ac_build_ifcc(&ctx->ac, tmp, 5101); |
| ac_build_break(&ctx->ac); |
| ac_build_endif(&ctx->ac, 5101); |
| |
| tmp = LLVMBuildAdd(builder, vertexidx, ctx->ac.i32_1, ""); |
| LLVMBuildStore(builder, tmp, ctx->gs_next_vertex[stream]); |
| |
| tmp = ngg_gs_emit_vertex_ptr(ctx, gsthread, vertexidx); |
| LLVMValueRef gep_idx[3] = { |
| ctx->ac.i32_0, /* implied C-style array */ |
| ctx->ac.i32_1, /* second entry of struct */ |
| LLVMConstInt(ctx->ac.i32, stream, false), |
| }; |
| tmp = LLVMBuildGEP(builder, tmp, gep_idx, 3, ""); |
| LLVMBuildStore(builder, i8_0, tmp); |
| |
| ac_build_endloop(&ctx->ac, 5100); |
| } |
| |
| /* Accumulate generated primitives counts across the entire threadgroup. */ |
| for (unsigned stream = 0; stream < 4; ++stream) { |
| unsigned num_components; |
| |
| num_components = |
| ctx->shader_info->gs.num_stream_output_components[stream]; |
| if (!num_components) |
| continue; |
| |
| LLVMValueRef numprims = |
| LLVMBuildLoad(builder, ctx->gs_generated_prims[stream], ""); |
| numprims = ac_build_reduce(&ctx->ac, numprims, nir_op_iadd, ctx->ac.wave_size); |
| |
| tmp = LLVMBuildICmp(builder, LLVMIntEQ, ac_get_thread_id(&ctx->ac), ctx->ac.i32_0, ""); |
| ac_build_ifcc(&ctx->ac, tmp, 5105); |
| { |
| LLVMBuildAtomicRMW(builder, LLVMAtomicRMWBinOpAdd, |
| ac_build_gep0(&ctx->ac, ctx->gs_ngg_scratch, |
| LLVMConstInt(ctx->ac.i32, stream, false)), |
| numprims, LLVMAtomicOrderingMonotonic, false); |
| } |
| ac_build_endif(&ctx->ac, 5105); |
| } |
| } |
| |
| static void gfx10_ngg_gs_emit_epilogue_2(struct radv_shader_context *ctx) |
| { |
| const unsigned verts_per_prim = si_conv_gl_prim_to_vertices(ctx->shader->info.gs.output_primitive); |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef tmp, tmp2; |
| |
| ac_build_s_barrier(&ctx->ac); |
| |
| const LLVMValueRef tid = get_thread_id_in_tg(ctx); |
| LLVMValueRef num_emit_threads = ngg_get_prim_cnt(ctx); |
| |
| /* Streamout */ |
| if (ctx->shader_info->so.num_outputs) { |
| struct ngg_streamout nggso = {}; |
| |
| nggso.num_vertices = LLVMConstInt(ctx->ac.i32, verts_per_prim, false); |
| |
| LLVMValueRef vertexptr = ngg_gs_vertex_ptr(ctx, tid); |
| for (unsigned stream = 0; stream < 4; ++stream) { |
| if (!ctx->shader_info->gs.num_stream_output_components[stream]) |
| continue; |
| |
| LLVMValueRef gep_idx[3] = { |
| ctx->ac.i32_0, /* implicit C-style array */ |
| ctx->ac.i32_1, /* second value of struct */ |
| LLVMConstInt(ctx->ac.i32, stream, false), |
| }; |
| tmp = LLVMBuildGEP(builder, vertexptr, gep_idx, 3, ""); |
| tmp = LLVMBuildLoad(builder, tmp, ""); |
| tmp = LLVMBuildTrunc(builder, tmp, ctx->ac.i1, ""); |
| tmp2 = LLVMBuildICmp(builder, LLVMIntULT, tid, num_emit_threads, ""); |
| nggso.prim_enable[stream] = LLVMBuildAnd(builder, tmp, tmp2, ""); |
| } |
| |
| for (unsigned i = 0; i < verts_per_prim; ++i) { |
| tmp = LLVMBuildSub(builder, tid, |
| LLVMConstInt(ctx->ac.i32, verts_per_prim - i - 1, false), ""); |
| tmp = ngg_gs_vertex_ptr(ctx, tmp); |
| nggso.vertices[i] = ac_build_gep0(&ctx->ac, tmp, ctx->ac.i32_0); |
| } |
| |
| build_streamout(ctx, &nggso); |
| } |
| |
| /* TODO: culling */ |
| |
| /* Determine vertex liveness. */ |
| LLVMValueRef vertliveptr = ac_build_alloca(&ctx->ac, ctx->ac.i1, "vertexlive"); |
| |
| tmp = LLVMBuildICmp(builder, LLVMIntULT, tid, num_emit_threads, ""); |
| ac_build_ifcc(&ctx->ac, tmp, 5120); |
| { |
| for (unsigned i = 0; i < verts_per_prim; ++i) { |
| const LLVMValueRef primidx = |
| LLVMBuildAdd(builder, tid, |
| LLVMConstInt(ctx->ac.i32, i, false), ""); |
| |
| if (i > 0) { |
| tmp = LLVMBuildICmp(builder, LLVMIntULT, primidx, num_emit_threads, ""); |
| ac_build_ifcc(&ctx->ac, tmp, 5121 + i); |
| } |
| |
| /* Load primitive liveness */ |
| tmp = ngg_gs_vertex_ptr(ctx, primidx); |
| LLVMValueRef gep_idx[3] = { |
| ctx->ac.i32_0, /* implicit C-style array */ |
| ctx->ac.i32_1, /* second value of struct */ |
| ctx->ac.i32_0, /* stream 0 */ |
| }; |
| tmp = LLVMBuildGEP(builder, tmp, gep_idx, 3, ""); |
| tmp = LLVMBuildLoad(builder, tmp, ""); |
| const LLVMValueRef primlive = |
| LLVMBuildTrunc(builder, tmp, ctx->ac.i1, ""); |
| |
| tmp = LLVMBuildLoad(builder, vertliveptr, ""); |
| tmp = LLVMBuildOr(builder, tmp, primlive, ""), |
| LLVMBuildStore(builder, tmp, vertliveptr); |
| |
| if (i > 0) |
| ac_build_endif(&ctx->ac, 5121 + i); |
| } |
| } |
| ac_build_endif(&ctx->ac, 5120); |
| |
| /* Inclusive scan addition across the current wave. */ |
| LLVMValueRef vertlive = LLVMBuildLoad(builder, vertliveptr, ""); |
| struct ac_wg_scan vertlive_scan = {}; |
| vertlive_scan.op = nir_op_iadd; |
| vertlive_scan.enable_reduce = true; |
| vertlive_scan.enable_exclusive = true; |
| vertlive_scan.src = vertlive; |
| vertlive_scan.scratch = ac_build_gep0(&ctx->ac, ctx->gs_ngg_scratch, ctx->ac.i32_0); |
| vertlive_scan.waveidx = get_wave_id_in_tg(ctx); |
| vertlive_scan.numwaves = get_tgsize(ctx); |
| vertlive_scan.maxwaves = 8; |
| |
| ac_build_wg_scan(&ctx->ac, &vertlive_scan); |
| |
| /* Skip all exports (including index exports) when possible. At least on |
| * early gfx10 revisions this is also to avoid hangs. |
| */ |
| LLVMValueRef have_exports = |
| LLVMBuildICmp(builder, LLVMIntNE, vertlive_scan.result_reduce, ctx->ac.i32_0, ""); |
| num_emit_threads = |
| LLVMBuildSelect(builder, have_exports, num_emit_threads, ctx->ac.i32_0, ""); |
| |
| /* Allocate export space. Send this message as early as possible, to |
| * hide the latency of the SQ <-> SPI roundtrip. |
| * |
| * Note: We could consider compacting primitives for export as well. |
| * PA processes 1 non-null prim / clock, but it fetches 4 DW of |
| * prim data per clock and skips null primitives at no additional |
| * cost. So compacting primitives can only be beneficial when |
| * there are 4 or more contiguous null primitives in the export |
| * (in the common case of single-dword prim exports). |
| */ |
| build_sendmsg_gs_alloc_req(ctx, vertlive_scan.result_reduce, num_emit_threads); |
| |
| /* Setup the reverse vertex compaction permutation. We re-use stream 1 |
| * of the primitive liveness flags, relying on the fact that each |
| * threadgroup can have at most 256 threads. */ |
| ac_build_ifcc(&ctx->ac, vertlive, 5130); |
| { |
| tmp = ngg_gs_vertex_ptr(ctx, vertlive_scan.result_exclusive); |
| LLVMValueRef gep_idx[3] = { |
| ctx->ac.i32_0, /* implicit C-style array */ |
| ctx->ac.i32_1, /* second value of struct */ |
| ctx->ac.i32_1, /* stream 1 */ |
| }; |
| tmp = LLVMBuildGEP(builder, tmp, gep_idx, 3, ""); |
| tmp2 = LLVMBuildTrunc(builder, tid, ctx->ac.i8, ""); |
| LLVMBuildStore(builder, tmp2, tmp); |
| } |
| ac_build_endif(&ctx->ac, 5130); |
| |
| ac_build_s_barrier(&ctx->ac); |
| |
| /* Export primitive data */ |
| tmp = LLVMBuildICmp(builder, LLVMIntULT, tid, num_emit_threads, ""); |
| ac_build_ifcc(&ctx->ac, tmp, 5140); |
| { |
| struct ngg_prim prim = {}; |
| prim.num_vertices = verts_per_prim; |
| |
| tmp = ngg_gs_vertex_ptr(ctx, tid); |
| LLVMValueRef gep_idx[3] = { |
| ctx->ac.i32_0, /* implicit C-style array */ |
| ctx->ac.i32_1, /* second value of struct */ |
| ctx->ac.i32_0, /* primflag */ |
| }; |
| tmp = LLVMBuildGEP(builder, tmp, gep_idx, 3, ""); |
| tmp = LLVMBuildLoad(builder, tmp, ""); |
| prim.isnull = LLVMBuildICmp(builder, LLVMIntEQ, tmp, |
| LLVMConstInt(ctx->ac.i8, 0, false), ""); |
| |
| for (unsigned i = 0; i < verts_per_prim; ++i) { |
| prim.index[i] = LLVMBuildSub(builder, vertlive_scan.result_exclusive, |
| LLVMConstInt(ctx->ac.i32, verts_per_prim - i - 1, false), ""); |
| prim.edgeflag[i] = ctx->ac.i1false; |
| } |
| |
| build_export_prim(ctx, &prim); |
| } |
| ac_build_endif(&ctx->ac, 5140); |
| |
| /* Export position and parameter data */ |
| tmp = LLVMBuildICmp(builder, LLVMIntULT, tid, vertlive_scan.result_reduce, ""); |
| ac_build_ifcc(&ctx->ac, tmp, 5145); |
| { |
| struct radv_vs_output_info *outinfo = &ctx->shader_info->vs.outinfo; |
| bool export_view_index = ctx->options->key.has_multiview_view_index; |
| struct radv_shader_output_values *outputs; |
| unsigned noutput = 0; |
| |
| /* Allocate a temporary array for the output values. */ |
| unsigned num_outputs = util_bitcount64(ctx->output_mask) + export_view_index; |
| outputs = calloc(num_outputs, sizeof(outputs[0])); |
| |
| memset(outinfo->vs_output_param_offset, AC_EXP_PARAM_UNDEFINED, |
| sizeof(outinfo->vs_output_param_offset)); |
| outinfo->pos_exports = 0; |
| |
| tmp = ngg_gs_vertex_ptr(ctx, tid); |
| LLVMValueRef gep_idx[3] = { |
| ctx->ac.i32_0, /* implicit C-style array */ |
| ctx->ac.i32_1, /* second value of struct */ |
| ctx->ac.i32_1, /* stream 1: source data index */ |
| }; |
| tmp = LLVMBuildGEP(builder, tmp, gep_idx, 3, ""); |
| tmp = LLVMBuildLoad(builder, tmp, ""); |
| tmp = LLVMBuildZExt(builder, tmp, ctx->ac.i32, ""); |
| const LLVMValueRef vertexptr = ngg_gs_vertex_ptr(ctx, tmp); |
| |
| unsigned out_idx = 0; |
| gep_idx[1] = ctx->ac.i32_0; |
| for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) { |
| unsigned output_usage_mask = |
| ctx->shader_info->gs.output_usage_mask[i]; |
| int length = util_last_bit(output_usage_mask); |
| |
| if (!(ctx->output_mask & (1ull << i))) |
| continue; |
| |
| outputs[noutput].slot_name = i; |
| outputs[noutput].slot_index = i == VARYING_SLOT_CLIP_DIST1; |
| outputs[noutput].usage_mask = output_usage_mask; |
| |
| for (unsigned j = 0; j < length; j++, out_idx++) { |
| if (!(output_usage_mask & (1 << j))) |
| continue; |
| |
| gep_idx[2] = LLVMConstInt(ctx->ac.i32, out_idx, false); |
| tmp = LLVMBuildGEP(builder, vertexptr, gep_idx, 3, ""); |
| tmp = LLVMBuildLoad(builder, tmp, ""); |
| |
| LLVMTypeRef type = LLVMGetAllocatedType(ctx->abi.outputs[ac_llvm_reg_index_soa(i, j)]); |
| if (ac_get_type_size(type) == 2) { |
| tmp = ac_to_integer(&ctx->ac, tmp); |
| tmp = LLVMBuildTrunc(ctx->ac.builder, tmp, ctx->ac.i16, ""); |
| } |
| |
| outputs[noutput].values[j] = ac_to_float(&ctx->ac, tmp); |
| } |
| |
| for (unsigned j = length; j < 4; j++) |
| outputs[noutput].values[j] = LLVMGetUndef(ctx->ac.f32); |
| |
| noutput++; |
| } |
| |
| /* Export ViewIndex. */ |
| if (export_view_index) { |
| outputs[noutput].slot_name = VARYING_SLOT_LAYER; |
| outputs[noutput].slot_index = 0; |
| outputs[noutput].usage_mask = 0x1; |
| outputs[noutput].values[0] = ac_to_float(&ctx->ac, ctx->abi.view_index); |
| for (unsigned j = 1; j < 4; j++) |
| outputs[noutput].values[j] = ctx->ac.f32_0; |
| noutput++; |
| } |
| |
| radv_llvm_export_vs(ctx, outputs, noutput, outinfo, |
| ctx->options->key.vs_common_out.export_clip_dists); |
| FREE(outputs); |
| } |
| ac_build_endif(&ctx->ac, 5145); |
| } |
| |
| static void gfx10_ngg_gs_emit_vertex(struct radv_shader_context *ctx, |
| unsigned stream, |
| LLVMValueRef *addrs) |
| { |
| LLVMBuilderRef builder = ctx->ac.builder; |
| LLVMValueRef tmp; |
| const LLVMValueRef vertexidx = |
| LLVMBuildLoad(builder, ctx->gs_next_vertex[stream], ""); |
| |
| /* If this thread has already emitted the declared maximum number of |
| * vertices, skip the write: excessive vertex emissions are not |
| * supposed to have any effect. |
| */ |
| const LLVMValueRef can_emit = |
| LLVMBuildICmp(builder, LLVMIntULT, vertexidx, |
| LLVMConstInt(ctx->ac.i32, ctx->shader->info.gs.vertices_out, false), ""); |
| ac_build_ifcc(&ctx->ac, can_emit, 9001); |
| |
| tmp = LLVMBuildAdd(builder, vertexidx, ctx->ac.i32_1, ""); |
| tmp = LLVMBuildSelect(builder, can_emit, tmp, vertexidx, ""); |
| LLVMBuildStore(builder, tmp, ctx->gs_next_vertex[stream]); |
| |
| const LLVMValueRef vertexptr = |
| ngg_gs_emit_vertex_ptr(ctx, get_thread_id_in_tg(ctx), vertexidx); |
| unsigned out_idx = 0; |
| for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) { |
| unsigned output_usage_mask = |
| ctx->shader_info->gs.output_usage_mask[i]; |
| uint8_t output_stream = |
| ctx->shader_info->gs.output_streams[i]; |
| LLVMValueRef *out_ptr = &addrs[i * 4]; |
| int length = util_last_bit(output_usage_mask); |
| |
| if (!(ctx->output_mask & (1ull << i)) || |
| output_stream != stream) |
| continue; |
| |
| for (unsigned j = 0; j < length; j++, out_idx++) { |
| if (!(output_usage_mask & (1 << j))) |
| continue; |
| |
| LLVMValueRef out_val = LLVMBuildLoad(ctx->ac.builder, |
| out_ptr[j], ""); |
| LLVMValueRef gep_idx[3] = { |
| ctx->ac.i32_0, /* implied C-style array */ |
| ctx->ac.i32_0, /* first entry of struct */ |
| LLVMConstInt(ctx->ac.i32, out_idx, false), |
| }; |
| LLVMValueRef ptr = LLVMBuildGEP(builder, vertexptr, gep_idx, 3, ""); |
| |
| out_val = ac_to_integer(&ctx->ac, out_val); |
| out_val = LLVMBuildZExtOrBitCast(ctx->ac.builder, out_val, ctx->ac.i32, ""); |
| |
| LLVMBuildStore(builder, out_val, ptr); |
| } |
| } |
| assert(out_idx * 4 <= ctx->shader_info->gs.gsvs_vertex_size); |
| |
| /* Determine and store whether this vertex completed a primitive. */ |
| const LLVMValueRef curverts = LLVMBuildLoad(builder, ctx->gs_curprim_verts[stream], ""); |
| |
| tmp = LLVMConstInt(ctx->ac.i32, si_conv_gl_prim_to_vertices(ctx->shader->info.gs.output_primitive) - 1, false); |
| const LLVMValueRef iscompleteprim = |
| LLVMBuildICmp(builder, LLVMIntUGE, curverts, tmp, ""); |
| |
| tmp = LLVMBuildAdd(builder, curverts, ctx->ac.i32_1, ""); |
| LLVMBuildStore(builder, tmp, ctx->gs_curprim_verts[stream]); |
| |
| LLVMValueRef gep_idx[3] = { |
| ctx->ac.i32_0, /* implied C-style array */ |
| ctx->ac.i32_1, /* second struct entry */ |
| LLVMConstInt(ctx->ac.i32, stream, false), |
| }; |
| const LLVMValueRef primflagptr = |
| LLVMBuildGEP(builder, vertexptr, gep_idx, 3, ""); |
| |
| tmp = LLVMBuildZExt(builder, iscompleteprim, ctx->ac.i8, ""); |
| LLVMBuildStore(builder, tmp, primflagptr); |
| |
| tmp = LLVMBuildLoad(builder, ctx->gs_generated_prims[stream], ""); |
| tmp = LLVMBuildAdd(builder, tmp, LLVMBuildZExt(builder, iscompleteprim, ctx->ac.i32, ""), ""); |
| LLVMBuildStore(builder, tmp, ctx->gs_generated_prims[stream]); |
| |
| ac_build_endif(&ctx->ac, 9001); |
| } |
| |
| static void |
| write_tess_factors(struct radv_shader_context *ctx) |
| { |
| unsigned stride, outer_comps, inner_comps; |
| LLVMValueRef invocation_id = ac_unpack_param(&ctx->ac, ctx->abi.tcs_rel_ids, 8, 5); |
| LLVMValueRef rel_patch_id = ac_unpack_param(&ctx->ac, ctx->abi.tcs_rel_ids, 0, 8); |
| unsigned tess_inner_index = 0, tess_outer_index; |
| LLVMValueRef lds_base, lds_inner = NULL, lds_outer, byteoffset, buffer; |
| LLVMValueRef out[6], vec0, vec1, tf_base, inner[4], outer[4]; |
| int i; |
| ac_emit_barrier(&ctx->ac, ctx->stage); |
| |
| switch (ctx->options->key.tcs.primitive_mode) { |
| case GL_ISOLINES: |
| stride = 2; |
| outer_comps = 2; |
| inner_comps = 0; |
| break; |
| case GL_TRIANGLES: |
| stride = 4; |
| outer_comps = 3; |
| inner_comps = 1; |
| break; |
| case GL_QUADS: |
| stride = 6; |
| outer_comps = 4; |
| inner_comps = 2; |
| break; |
| default: |
| return; |
| } |
| |
| ac_build_ifcc(&ctx->ac, |
| LLVMBuildICmp(ctx->ac.builder, LLVMIntEQ, |
| invocation_id, ctx->ac.i32_0, ""), 6503); |
| |
| lds_base = get_tcs_out_current_patch_data_offset(ctx); |
| |
| if (inner_comps) { |
| tess_inner_index = shader_io_get_unique_index(VARYING_SLOT_TESS_LEVEL_INNER); |
| lds_inner = LLVMBuildAdd(ctx->ac.builder, lds_base, |
| LLVMConstInt(ctx->ac.i32, tess_inner_index * 4, false), ""); |
| } |
| |
| tess_outer_index = shader_io_get_unique_index(VARYING_SLOT_TESS_LEVEL_OUTER); |
| lds_outer = LLVMBuildAdd(ctx->ac.builder, lds_base, |
| LLVMConstInt(ctx->ac.i32, tess_outer_index * 4, false), ""); |
| |
| for (i = 0; i < 4; i++) { |
| inner[i] = LLVMGetUndef(ctx->ac.i32); |
| outer[i] = LLVMGetUndef(ctx->ac.i32); |
| } |
| |
| // LINES reversal |
| if (ctx->options->key.tcs.primitive_mode == GL_ISOLINES) { |
| outer[0] = out[1] = ac_lds_load(&ctx->ac, lds_outer); |
| lds_outer = LLVMBuildAdd(ctx->ac.builder, lds_outer, |
| ctx->ac.i32_1, ""); |
| outer[1] = out[0] = ac_lds_load(&ctx->ac, lds_outer); |
| } else { |
| for (i = 0; i < outer_comps; i++) { |
| outer[i] = out[i] = |
| ac_lds_load(&ctx->ac, lds_outer); |
| lds_outer = LLVMBuildAdd(ctx->ac.builder, lds_outer, |
| ctx->ac.i32_1, ""); |
| } |
| for (i = 0; i < inner_comps; i++) { |
| inner[i] = out[outer_comps+i] = |
| ac_lds_load(&ctx->ac, lds_inner); |
| lds_inner = LLVMBuildAdd(ctx->ac.builder, lds_inner, |
| ctx->ac.i32_1, ""); |
| } |
| } |
| |
| /* Convert the outputs to vectors for stores. */ |
| vec0 = ac_build_gather_values(&ctx->ac, out, MIN2(stride, 4)); |
| vec1 = NULL; |
| |
| if (stride > 4) |
| vec1 = ac_build_gather_values(&ctx->ac, out + 4, stride - 4); |
| |
| |
| buffer = ctx->hs_ring_tess_factor; |
| tf_base = ctx->tess_factor_offset; |
| byteoffset = LLVMBuildMul(ctx->ac.builder, rel_patch_id, |
| LLVMConstInt(ctx->ac.i32, 4 * stride, false), ""); |
| unsigned tf_offset = 0; |
| |
| if (ctx->options->chip_class <= GFX8) { |
| ac_build_ifcc(&ctx->ac, |
| LLVMBuildICmp(ctx->ac.builder, LLVMIntEQ, |
| rel_patch_id, ctx->ac.i32_0, ""), 6504); |
| |
| /* Store the dynamic HS control word. */ |
| ac_build_buffer_store_dword(&ctx->ac, buffer, |
| LLVMConstInt(ctx->ac.i32, 0x80000000, false), |
| 1, ctx->ac.i32_0, tf_base, |
| 0, ac_glc, false); |
| tf_offset += 4; |
| |
| ac_build_endif(&ctx->ac, 6504); |
| } |
| |
| /* Store the tessellation factors. */ |
| ac_build_buffer_store_dword(&ctx->ac, buffer, vec0, |
| MIN2(stride, 4), byteoffset, tf_base, |
| tf_offset, ac_glc, false); |
| if (vec1) |
| ac_build_buffer_store_dword(&ctx->ac, buffer, vec1, |
| stride - 4, byteoffset, tf_base, |
| 16 + tf_offset, ac_glc, false); |
| |
| //store to offchip for TES to read - only if TES reads them |
| if (ctx->options->key.tcs.tes_reads_tess_factors) { |
| LLVMValueRef inner_vec, outer_vec, tf_outer_offset; |
| LLVMValueRef tf_inner_offset; |
| unsigned param_outer, param_inner; |
| |
| param_outer = shader_io_get_unique_index(VARYING_SLOT_TESS_LEVEL_OUTER); |
| tf_outer_offset = get_tcs_tes_buffer_address(ctx, NULL, |
| LLVMConstInt(ctx->ac.i32, param_outer, 0)); |
| |
| outer_vec = ac_build_gather_values(&ctx->ac, outer, |
| util_next_power_of_two(outer_comps)); |
| |
| ac_build_buffer_store_dword(&ctx->ac, ctx->hs_ring_tess_offchip, outer_vec, |
| outer_comps, tf_outer_offset, |
| ctx->oc_lds, 0, ac_glc, false); |
| if (inner_comps) { |
| param_inner = shader_io_get_unique_index(VARYING_SLOT_TESS_LEVEL_INNER); |
| tf_inner_offset = get_tcs_tes_buffer_address(ctx, NULL, |
| LLVMConstInt(ctx->ac.i32, param_inner, 0)); |
| |
| inner_vec = inner_comps == 1 ? inner[0] : |
| ac_build_gather_values(&ctx->ac, inner, inner_comps); |
| ac_build_buffer_store_dword(&ctx->ac, ctx->hs_ring_tess_offchip, inner_vec, |
| inner_comps, tf_inner_offset, |
| ctx->oc_lds, 0, ac_glc, false); |
| } |
| } |
| |
| ac_build_endif(&ctx->ac, 6503); |
| } |
| |
| static void |
| handle_tcs_outputs_post(struct radv_shader_context *ctx) |
| { |
| write_tess_factors(ctx); |
| } |
| |
| static bool |
| si_export_mrt_color(struct radv_shader_context *ctx, |
| LLVMValueRef *color, unsigned index, |
| struct ac_export_args *args) |
| { |
| /* Export */ |
| si_llvm_init_export_args(ctx, color, 0xf, |
| V_008DFC_SQ_EXP_MRT + index, args); |
| if (!args->enabled_channels) |
| return false; /* unnecessary NULL export */ |
| |
| return true; |
| } |
| |
| static void |
| radv_export_mrt_z(struct radv_shader_context *ctx, |
| LLVMValueRef depth, LLVMValueRef stencil, |
| LLVMValueRef samplemask) |
| { |
| struct ac_export_args args; |
| |
| ac_export_mrt_z(&ctx->ac, depth, stencil, samplemask, &args); |
| |
| ac_build_export(&ctx->ac, &args); |
| } |
| |
| static void |
| handle_fs_outputs_post(struct radv_shader_context *ctx) |
| { |
| unsigned index = 0; |
| LLVMValueRef depth = NULL, stencil = NULL, samplemask = NULL; |
| struct ac_export_args color_args[8]; |
| |
| for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) { |
| LLVMValueRef values[4]; |
| |
| if (!(ctx->output_mask & (1ull << i))) |
| continue; |
| |
| if (i < FRAG_RESULT_DATA0) |
| continue; |
| |
| for (unsigned j = 0; j < 4; j++) |
| values[j] = ac_to_float(&ctx->ac, |
| radv_load_output(ctx, i, j)); |
| |
| bool ret = si_export_mrt_color(ctx, values, |
| i - FRAG_RESULT_DATA0, |
| &color_args[index]); |
| if (ret) |
| index++; |
| } |
| |
| /* Process depth, stencil, samplemask. */ |
| if (ctx->shader_info->ps.writes_z) { |
| depth = ac_to_float(&ctx->ac, |
| radv_load_output(ctx, FRAG_RESULT_DEPTH, 0)); |
| } |
| if (ctx->shader_info->ps.writes_stencil) { |
| stencil = ac_to_float(&ctx->ac, |
| radv_load_output(ctx, FRAG_RESULT_STENCIL, 0)); |
| } |
| if (ctx->shader_info->ps.writes_sample_mask) { |
| samplemask = ac_to_float(&ctx->ac, |
| radv_load_output(ctx, FRAG_RESULT_SAMPLE_MASK, 0)); |
| } |
| |
| /* Set the DONE bit on last non-null color export only if Z isn't |
| * exported. |
| */ |
| if (index > 0 && |
| !ctx->shader_info->ps.writes_z && |
| !ctx->shader_info->ps.writes_stencil && |
| !ctx->shader_info->ps.writes_sample_mask) { |
| unsigned last = index - 1; |
| |
| color_args[last].valid_mask = 1; /* whether the EXEC mask is valid */ |
| color_args[last].done = 1; /* DONE bit */ |
| } |
| |
| /* Export PS outputs. */ |
| for (unsigned i = 0; i < index; i++) |
| ac_build_export(&ctx->ac, &color_args[i]); |
| |
| if (depth || stencil || samplemask) |
| radv_export_mrt_z(ctx, depth, stencil, samplemask); |
| else if (!index) |
| ac_build_export_null(&ctx->ac); |
| } |
| |
| static void |
| emit_gs_epilogue(struct radv_shader_context *ctx) |
| { |
| if (ctx->options->key.vs_common_out.as_ngg) { |
| gfx10_ngg_gs_emit_epilogue_1(ctx); |
| return; |
| } |
| |
| if (ctx->ac.chip_class >= GFX10) |
| LLVMBuildFence(ctx->ac.builder, LLVMAtomicOrderingRelease, false, ""); |
| |
| ac_build_sendmsg(&ctx->ac, AC_SENDMSG_GS_OP_NOP | AC_SENDMSG_GS_DONE, ctx->gs_wave_id); |
| } |
| |
| static void |
| handle_shader_outputs_post(struct ac_shader_abi *abi, unsigned max_outputs, |
| LLVMValueRef *addrs) |
| { |
| struct radv_shader_context *ctx = radv_shader_context_from_abi(abi); |
| |
| switch (ctx->stage) { |
| case MESA_SHADER_VERTEX: |
| if (ctx->options->key.vs_common_out.as_ls) |
| handle_ls_outputs_post(ctx); |
| else if (ctx->options->key.vs_common_out.as_es) |
| handle_es_outputs_post(ctx, &ctx->shader_info->vs.es_info); |
| else if (ctx->options->key.vs_common_out.as_ngg) |
| handle_ngg_outputs_post_1(ctx); |
| else |
| handle_vs_outputs_post(ctx, ctx->options->key.vs_common_out.export_prim_id, |
| ctx->options->key.vs_common_out.export_clip_dists, |
| &ctx->shader_info->vs.outinfo); |
| break; |
| case MESA_SHADER_FRAGMENT: |
| handle_fs_outputs_post(ctx); |
| break; |
| case MESA_SHADER_GEOMETRY: |
| emit_gs_epilogue(ctx); |
| break; |
| case MESA_SHADER_TESS_CTRL: |
| handle_tcs_outputs_post(ctx); |
| break; |
| case MESA_SHADER_TESS_EVAL: |
| if (ctx->options->key.vs_common_out.as_es) |
| handle_es_outputs_post(ctx, &ctx->shader_info->tes.es_info); |
| else if (ctx->options->key.vs_common_out.as_ngg) |
| handle_ngg_outputs_post_1(ctx); |
| else |
| handle_vs_outputs_post(ctx, ctx->options->key.vs_common_out.export_prim_id, |
| ctx->options->key.vs_common_out.export_clip_dists, |
| &ctx->shader_info->tes.outinfo); |
| break; |
| default: |
| break; |
| } |
| } |
| |
| static void ac_llvm_finalize_module(struct radv_shader_context *ctx, |
| LLVMPassManagerRef passmgr, |
| const struct radv_nir_compiler_options *options) |
| { |
| LLVMRunPassManager(passmgr, ctx->ac.module); |
| LLVMDisposeBuilder(ctx->ac.builder); |
| |
| ac_llvm_context_dispose(&ctx->ac); |
| } |
| |
| static void |
| ac_nir_eliminate_const_vs_outputs(struct radv_shader_context *ctx) |
| { |
| struct radv_vs_output_info *outinfo; |
| |
| switch (ctx->stage) { |
| case MESA_SHADER_FRAGMENT: |
| case MESA_SHADER_COMPUTE: |
| case MESA_SHADER_TESS_CTRL: |
| case MESA_SHADER_GEOMETRY: |
| return; |
| case MESA_SHADER_VERTEX: |
| if (ctx->options->key.vs_common_out.as_ls || |
| ctx->options->key.vs_common_out.as_es) |
| return; |
| outinfo = &ctx->shader_info->vs.outinfo; |
| break; |
| case MESA_SHADER_TESS_EVAL: |
| if (ctx->options->key.vs_common_out.as_es) |
| return; |
| outinfo = &ctx->shader_info->tes.outinfo; |
| break; |
| default: |
| unreachable("Unhandled shader type"); |
| } |
| |
| ac_optimize_vs_outputs(&ctx->ac, |
| ctx->main_function, |
| outinfo->vs_output_param_offset, |
| VARYING_SLOT_MAX, |
| &outinfo->param_exports); |
| } |
| |
| static void |
| ac_setup_rings(struct radv_shader_context *ctx) |
| { |
| if (ctx->options->chip_class <= GFX8 && |
| (ctx->stage == MESA_SHADER_GEOMETRY || |
| ctx->options->key.vs_common_out.as_es || ctx->options->key.vs_common_out.as_es)) { |
| unsigned ring = ctx->stage == MESA_SHADER_GEOMETRY ? RING_ESGS_GS |
| : RING_ESGS_VS; |
| LLVMValueRef offset = LLVMConstInt(ctx->ac.i32, ring, false); |
| |
| ctx->esgs_ring = ac_build_load_to_sgpr(&ctx->ac, |
| ctx->ring_offsets, |
| offset); |
| } |
| |
| if (ctx->is_gs_copy_shader) { |
| ctx->gsvs_ring[0] = |
| ac_build_load_to_sgpr(&ctx->ac, ctx->ring_offsets, |
| LLVMConstInt(ctx->ac.i32, |
| RING_GSVS_VS, false)); |
| } |
| |
| if (ctx->stage == MESA_SHADER_GEOMETRY) { |
| /* The conceptual layout of the GSVS ring is |
| * v0c0 .. vLv0 v0c1 .. vLc1 .. |
| * but the real memory layout is swizzled across |
| * threads: |
| * t0v0c0 .. t15v0c0 t0v1c0 .. t15v1c0 ... t15vLcL |
| * t16v0c0 .. |
| * Override the buffer descriptor accordingly. |
| */ |
| LLVMTypeRef v2i64 = LLVMVectorType(ctx->ac.i64, 2); |
| uint64_t stream_offset = 0; |
| unsigned num_records = ctx->ac.wave_size; |
| LLVMValueRef base_ring; |
| |
| base_ring = |
| ac_build_load_to_sgpr(&ctx->ac, ctx->ring_offsets, |
| LLVMConstInt(ctx->ac.i32, |
| RING_GSVS_GS, false)); |
| |
| for (unsigned stream = 0; stream < 4; stream++) { |
| unsigned num_components, stride; |
| LLVMValueRef ring, tmp; |
| |
| num_components = |
| ctx->shader_info->gs.num_stream_output_components[stream]; |
| |
| if (!num_components) |
| continue; |
| |
| stride = 4 * num_components * ctx->shader->info.gs.vertices_out; |
| |
| /* Limit on the stride field for <= GFX7. */ |
| assert(stride < (1 << 14)); |
| |
| ring = LLVMBuildBitCast(ctx->ac.builder, |
| base_ring, v2i64, ""); |
| tmp = LLVMBuildExtractElement(ctx->ac.builder, |
| ring, ctx->ac.i32_0, ""); |
| tmp = LLVMBuildAdd(ctx->ac.builder, tmp, |
| LLVMConstInt(ctx->ac.i64, |
| stream_offset, 0), ""); |
| ring = LLVMBuildInsertElement(ctx->ac.builder, |
| ring, tmp, ctx->ac.i32_0, ""); |
| |
| stream_offset += stride * ctx->ac.wave_size; |
| |
| ring = LLVMBuildBitCast(ctx->ac.builder, ring, |
| ctx->ac.v4i32, ""); |
| |
| tmp = LLVMBuildExtractElement(ctx->ac.builder, ring, |
| ctx->ac.i32_1, ""); |
| tmp = LLVMBuildOr(ctx->ac.builder, tmp, |
| LLVMConstInt(ctx->ac.i32, |
| S_008F04_STRIDE(stride), false), ""); |
| ring = LLVMBuildInsertElement(ctx->ac.builder, ring, tmp, |
| ctx->ac.i32_1, ""); |
| |
| ring = LLVMBuildInsertElement(ctx->ac.builder, ring, |
| LLVMConstInt(ctx->ac.i32, |
| num_records, false), |
| LLVMConstInt(ctx->ac.i32, 2, false), ""); |
| |
| ctx->gsvs_ring[stream] = ring; |
| } |
| } |
| |
| if (ctx->stage == MESA_SHADER_TESS_CTRL || |
| ctx->stage == MESA_SHADER_TESS_EVAL) { |
| ctx->hs_ring_tess_offchip = ac_build_load_to_sgpr(&ctx->ac, ctx->ring_offsets, LLVMConstInt(ctx->ac.i32, RING_HS_TESS_OFFCHIP, false)); |
| ctx->hs_ring_tess_factor = ac_build_load_to_sgpr(&ctx->ac, ctx->ring_offsets, LLVMConstInt(ctx->ac.i32, RING_HS_TESS_FACTOR, false)); |
| } |
| } |
| |
| unsigned |
| radv_nir_get_max_workgroup_size(enum chip_class chip_class, |
| gl_shader_stage stage, |
| const struct nir_shader *nir) |
| { |
| const unsigned backup_sizes[] = {chip_class >= GFX9 ? 128 : 64, 1, 1}; |
| return radv_get_max_workgroup_size(chip_class, stage, nir ? nir->info.cs.local_size : backup_sizes); |
| } |
| |
| /* Fixup the HW not emitting the TCS regs if there are no HS threads. */ |
| static void ac_nir_fixup_ls_hs_input_vgprs(struct radv_shader_context *ctx) |
| { |
| LLVMValueRef count = ac_unpack_param(&ctx->ac, ctx->merged_wave_info, 8, 8); |
| LLVMValueRef hs_empty = LLVMBuildICmp(ctx->ac.builder, LLVMIntEQ, count, |
| ctx->ac.i32_0, ""); |
| ctx->abi.instance_id = LLVMBuildSelect(ctx->ac.builder, hs_empty, ctx->rel_auto_id, ctx->abi.instance_id, ""); |
| ctx->rel_auto_id = LLVMBuildSelect(ctx->ac.builder, hs_empty, ctx->abi.tcs_rel_ids, ctx->rel_auto_id, ""); |
| ctx->abi.vertex_id = LLVMBuildSelect(ctx->ac.builder, hs_empty, ctx->abi.tcs_patch_id, ctx->abi.vertex_id, ""); |
| } |
| |
| static void prepare_gs_input_vgprs(struct radv_shader_context *ctx) |
| { |
| for(int i = 5; i >= 0; --i) { |
| ctx->gs_vtx_offset[i] = ac_unpack_param(&ctx->ac, ctx->gs_vtx_offset[i & ~1], |
| (i & 1) * 16, 16); |
| } |
| |
| ctx->gs_wave_id = ac_unpack_param(&ctx->ac, ctx->merged_wave_info, 16, 8); |
| } |
| |
| /* Ensure that the esgs ring is declared. |
| * |
| * We declare it with 64KB alignment as a hint that the |
| * pointer value will always be 0. |
| */ |
| static void declare_esgs_ring(struct radv_shader_context *ctx) |
| { |
| if (ctx->esgs_ring) |
| return; |
| |
| assert(!LLVMGetNamedGlobal(ctx->ac.module, "esgs_ring")); |
| |
| ctx->esgs_ring = LLVMAddGlobalInAddressSpace( |
| ctx->ac.module, LLVMArrayType(ctx->ac.i32, 0), |
| "esgs_ring", |
| AC_ADDR_SPACE_LDS); |
| LLVMSetLinkage(ctx->esgs_ring, LLVMExternalLinkage); |
| LLVMSetAlignment(ctx->esgs_ring, 64 * 1024); |
| } |
| |
| static |
| LLVMModuleRef ac_translate_nir_to_llvm(struct ac_llvm_compiler *ac_llvm, |
| struct nir_shader *const *shaders, |
| int shader_count, |
| struct radv_shader_info *shader_info, |
| const struct radv_nir_compiler_options *options) |
| { |
| struct radv_shader_context ctx = {0}; |
| unsigned i; |
| ctx.options = options; |
| ctx.shader_info = shader_info; |
| |
| enum ac_float_mode float_mode = AC_FLOAT_MODE_DEFAULT; |
| |
| if (shader_info->float_controls_mode & FLOAT_CONTROLS_DENORM_FLUSH_TO_ZERO_FP32) { |
| float_mode = AC_FLOAT_MODE_DENORM_FLUSH_TO_ZERO; |
| } else if (options->unsafe_math) { |
| float_mode = AC_FLOAT_MODE_UNSAFE_FP_MATH; |
| } |
| |
| ac_llvm_context_init(&ctx.ac, ac_llvm, options->chip_class, |
| options->family, float_mode, options->wave_size, 64); |
| ctx.context = ctx.ac.context; |
| |
| for (i = 0; i < MAX_SETS; i++) |
| shader_info->user_sgprs_locs.descriptor_sets[i].sgpr_idx = -1; |
| for (i = 0; i < AC_UD_MAX_UD; i++) |
| shader_info->user_sgprs_locs.shader_data[i].sgpr_idx = -1; |
| |
| ctx.max_workgroup_size = 0; |
| for (int i = 0; i < shader_count; ++i) { |
| ctx.max_workgroup_size = MAX2(ctx.max_workgroup_size, |
| radv_nir_get_max_workgroup_size(ctx.options->chip_class, |
| shaders[i]->info.stage, |
| shaders[i])); |
| } |
| |
| if (ctx.ac.chip_class >= GFX10) { |
| if (is_pre_gs_stage(shaders[0]->info.stage) && |
| options->key.vs_common_out.as_ngg) { |
| ctx.max_workgroup_size = 128; |
| } |
| } |
| |
| create_function(&ctx, shaders[shader_count - 1]->info.stage, shader_count >= 2, |
| shader_count >= 2 ? shaders[shader_count - 2]->info.stage : MESA_SHADER_VERTEX); |
| |
| ctx.abi.inputs = &ctx.inputs[0]; |
| ctx.abi.emit_outputs = handle_shader_outputs_post; |
| ctx.abi.emit_vertex = visit_emit_vertex; |
| ctx.abi.load_ubo = radv_load_ubo; |
| ctx.abi.load_ssbo = radv_load_ssbo; |
| ctx.abi.load_sampler_desc = radv_get_sampler_desc; |
| ctx.abi.load_resource = radv_load_resource; |
| ctx.abi.clamp_shadow_reference = false; |
| ctx.abi.robust_buffer_access = options->robust_buffer_access; |
| |
| bool is_ngg = is_pre_gs_stage(shaders[0]->info.stage) && ctx.options->key.vs_common_out.as_ngg; |
| if (shader_count >= 2 || is_ngg) |
| ac_init_exec_full_mask(&ctx.ac); |
| |
| if (options->has_ls_vgpr_init_bug && |
| shaders[shader_count - 1]->info.stage == MESA_SHADER_TESS_CTRL) |
| ac_nir_fixup_ls_hs_input_vgprs(&ctx); |
| |
| if (shaders[shader_count - 1]->info.stage != MESA_SHADER_GEOMETRY && |
| (ctx.options->key.vs_common_out.as_ngg && |
| !ctx.options->key.vs_common_out.as_es)) { |
| /* Unconditionally declare scratch space base for streamout and |
| * vertex compaction. Whether space is actually allocated is |
| * determined during linking / PM4 creation. |
| * |
| * Add an extra dword per vertex to ensure an odd stride, which |
| * avoids bank conflicts for SoA accesses. |
| */ |
| declare_esgs_ring(&ctx); |
| |
| /* This is really only needed when streamout and / or vertex |
| * compaction is enabled. |
| */ |
| LLVMTypeRef asi32 = LLVMArrayType(ctx.ac.i32, 8); |
| ctx.gs_ngg_scratch = LLVMAddGlobalInAddressSpace(ctx.ac.module, |
| asi32, "ngg_scratch", AC_ADDR_SPACE_LDS); |
| LLVMSetInitializer(ctx.gs_ngg_scratch, LLVMGetUndef(asi32)); |
| LLVMSetAlignment(ctx.gs_ngg_scratch, 4); |
| } |
| |
| for(int i = 0; i < shader_count; ++i) { |
| ctx.stage = shaders[i]->info.stage; |
| ctx.shader = shaders[i]; |
| ctx.output_mask = 0; |
| |
| if (shaders[i]->info.stage == MESA_SHADER_GEOMETRY) { |
| for (int i = 0; i < 4; i++) { |
| ctx.gs_next_vertex[i] = |
| ac_build_alloca(&ctx.ac, ctx.ac.i32, ""); |
| } |
| if (ctx.options->key.vs_common_out.as_ngg) { |
| for (unsigned i = 0; i < 4; ++i) { |
| ctx.gs_curprim_verts[i] = |
| ac_build_alloca(&ctx.ac, ctx.ac.i32, ""); |
| ctx.gs_generated_prims[i] = |
| ac_build_alloca(&ctx.ac, ctx.ac.i32, ""); |
| } |
| |
| unsigned scratch_size = 8; |
| if (ctx.shader_info->so.num_outputs) |
| scratch_size = 44; |
| |
| LLVMTypeRef ai32 = LLVMArrayType(ctx.ac.i32, scratch_size); |
| ctx.gs_ngg_scratch = |
| LLVMAddGlobalInAddressSpace(ctx.ac.module, |
| ai32, "ngg_scratch", AC_ADDR_SPACE_LDS); |
| LLVMSetInitializer(ctx.gs_ngg_scratch, LLVMGetUndef(ai32)); |
| LLVMSetAlignment(ctx.gs_ngg_scratch, 4); |
| |
| ctx.gs_ngg_emit = LLVMAddGlobalInAddressSpace(ctx.ac.module, |
| LLVMArrayType(ctx.ac.i32, 0), "ngg_emit", AC_ADDR_SPACE_LDS); |
| LLVMSetLinkage(ctx.gs_ngg_emit, LLVMExternalLinkage); |
| LLVMSetAlignment(ctx.gs_ngg_emit, 4); |
| } |
| |
| ctx.abi.load_inputs = load_gs_input; |
| ctx.abi.emit_primitive = visit_end_primitive; |
| } else if (shaders[i]->info.stage == MESA_SHADER_TESS_CTRL) { |
| ctx.abi.load_tess_varyings = load_tcs_varyings; |
| ctx.abi.load_patch_vertices_in = load_patch_vertices_in; |
| ctx.abi.store_tcs_outputs = store_tcs_output; |
| if (shader_count == 1) |
| ctx.tcs_num_inputs = ctx.options->key.tcs.num_inputs; |
| else |
| ctx.tcs_num_inputs = util_last_bit64(shader_info->vs.ls_outputs_written); |
| ctx.tcs_num_patches = get_tcs_num_patches(&ctx); |
| } else if (shaders[i]->info.stage == MESA_SHADER_TESS_EVAL) { |
| ctx.abi.load_tess_varyings = load_tes_input; |
| ctx.abi.load_tess_coord = load_tess_coord; |
| ctx.abi.load_patch_vertices_in = load_patch_vertices_in; |
| ctx.tcs_num_patches = ctx.options->key.tes.num_patches; |
| } else if (shaders[i]->info.stage == MESA_SHADER_VERTEX) { |
| ctx.abi.load_base_vertex = radv_load_base_vertex; |
| } else if (shaders[i]->info.stage == MESA_SHADER_FRAGMENT) { |
| ctx.abi.load_sample_position = load_sample_position; |
| ctx.abi.load_sample_mask_in = load_sample_mask_in; |
| ctx.abi.emit_kill = radv_emit_kill; |
| } |
| |
| if (shaders[i]->info.stage == MESA_SHADER_VERTEX && |
| ctx.options->key.vs_common_out.as_ngg && |
| ctx.options->key.vs_common_out.export_prim_id) { |
| declare_esgs_ring(&ctx); |
| } |
| |
| bool nested_barrier = false; |
| |
| if (i) { |
| if (shaders[i]->info.stage == MESA_SHADER_GEOMETRY && |
| ctx.options->key.vs_common_out.as_ngg) { |
| gfx10_ngg_gs_emit_prologue(&ctx); |
| nested_barrier = false; |
| } else { |
| nested_barrier = true; |
| } |
| } |
| |
| if (nested_barrier) { |
| /* Execute a barrier before the second shader in |
| * a merged shader. |
| * |
| * Execute the barrier inside the conditional block, |
| * so that empty waves can jump directly to s_endpgm, |
| * which will also signal the barrier. |
| * |
| * This is possible in gfx9, because an empty wave |
| * for the second shader does not participate in |
| * the epilogue. With NGG, empty waves may still |
| * be required to export data (e.g. GS output vertices), |
| * so we cannot let them exit early. |
| * |
| * If the shader is TCS and the TCS epilog is present |
| * and contains a barrier, it will wait there and then |
| * reach s_endpgm. |
| */ |
| ac_emit_barrier(&ctx.ac, ctx.stage); |
| } |
| |
| nir_foreach_variable(variable, &shaders[i]->outputs) |
| scan_shader_output_decl(&ctx, variable, shaders[i], shaders[i]->info.stage); |
| |
| ac_setup_rings(&ctx); |
| |
| LLVMBasicBlockRef merge_block; |
| if (shader_count >= 2 || is_ngg) { |
| LLVMValueRef fn = LLVMGetBasicBlockParent(LLVMGetInsertBlock(ctx.ac.builder)); |
| LLVMBasicBlockRef then_block = LLVMAppendBasicBlockInContext(ctx.ac.context, fn, ""); |
| merge_block = LLVMAppendBasicBlockInContext(ctx.ac.context, fn, ""); |
| |
| LLVMValueRef count = ac_unpack_param(&ctx.ac, ctx.merged_wave_info, 8 * i, 8); |
| LLVMValueRef thread_id = ac_get_thread_id(&ctx.ac); |
| LLVMValueRef cond = LLVMBuildICmp(ctx.ac.builder, LLVMIntULT, |
| thread_id, count, ""); |
| LLVMBuildCondBr(ctx.ac.builder, cond, then_block, merge_block); |
| |
| LLVMPositionBuilderAtEnd(ctx.ac.builder, then_block); |
| } |
| |
| if (shaders[i]->info.stage == MESA_SHADER_FRAGMENT) |
| prepare_interp_optimize(&ctx, shaders[i]); |
| else if(shaders[i]->info.stage == MESA_SHADER_VERTEX) |
| handle_vs_inputs(&ctx, shaders[i]); |
| else if(shader_count >= 2 && shaders[i]->info.stage == MESA_SHADER_GEOMETRY) |
| prepare_gs_input_vgprs(&ctx); |
| |
| ac_nir_translate(&ctx.ac, &ctx.abi, shaders[i]); |
| |
| if (shader_count >= 2 || is_ngg) { |
| LLVMBuildBr(ctx.ac.builder, merge_block); |
| LLVMPositionBuilderAtEnd(ctx.ac.builder, merge_block); |
| } |
| |
| /* This needs to be outside the if wrapping the shader body, as sometimes |
| * the HW generates waves with 0 es/vs threads. */ |
| if (is_pre_gs_stage(shaders[i]->info.stage) && |
| ctx.options->key.vs_common_out.as_ngg && |
| i == shader_count - 1) { |
| handle_ngg_outputs_post_2(&ctx); |
| } else if (shaders[i]->info.stage == MESA_SHADER_GEOMETRY && |
| ctx.options->key.vs_common_out.as_ngg) { |
| gfx10_ngg_gs_emit_epilogue_2(&ctx); |
| } |
| |
| if (shaders[i]->info.stage == MESA_SHADER_TESS_CTRL) { |
| shader_info->tcs.num_patches = ctx.tcs_num_patches; |
| shader_info->tcs.lds_size = calculate_tess_lds_size(&ctx); |
| } |
| } |
| |
| LLVMBuildRetVoid(ctx.ac.builder); |
| |
| if (options->dump_preoptir) { |
| fprintf(stderr, "%s LLVM IR:\n\n", |
| radv_get_shader_name(shader_info, |
| shaders[shader_count - 1]->info.stage)); |
| ac_dump_module(ctx.ac.module); |
| fprintf(stderr, "\n"); |
| } |
| |
| ac_llvm_finalize_module(&ctx, ac_llvm->passmgr, options); |
| |
| if (shader_count == 1) |
| ac_nir_eliminate_const_vs_outputs(&ctx); |
| |
| if (options->dump_shader) { |
| ctx.shader_info->private_mem_vgprs = |
| ac_count_scratch_private_memory(ctx.main_function); |
| } |
| |
| return ctx.ac.module; |
| } |
| |
| static void ac_diagnostic_handler(LLVMDiagnosticInfoRef di, void *context) |
| { |
| unsigned *retval = (unsigned *)context; |
| LLVMDiagnosticSeverity severity = LLVMGetDiagInfoSeverity(di); |
| char *description = LLVMGetDiagInfoDescription(di); |
| |
| if (severity == LLVMDSError) { |
| *retval = 1; |
| fprintf(stderr, "LLVM triggered Diagnostic Handler: %s\n", |
| description); |
| } |
| |
| LLVMDisposeMessage(description); |
| } |
| |
| static unsigned radv_llvm_compile(LLVMModuleRef M, |
| char **pelf_buffer, size_t *pelf_size, |
| struct ac_llvm_compiler *ac_llvm) |
| { |
| unsigned retval = 0; |
| LLVMContextRef llvm_ctx; |
| |
| /* Setup Diagnostic Handler*/ |
| llvm_ctx = LLVMGetModuleContext(M); |
| |
| LLVMContextSetDiagnosticHandler(llvm_ctx, ac_diagnostic_handler, |
| &retval); |
| |
| /* Compile IR*/ |
| if (!radv_compile_to_elf(ac_llvm, M, pelf_buffer, pelf_size)) |
| retval = 1; |
| return retval; |
| } |
| |
| static void ac_compile_llvm_module(struct ac_llvm_compiler *ac_llvm, |
| LLVMModuleRef llvm_module, |
| struct radv_shader_binary **rbinary, |
| gl_shader_stage stage, |
| const char *name, |
| const struct radv_nir_compiler_options *options) |
| { |
| char *elf_buffer = NULL; |
| size_t elf_size = 0; |
| char *llvm_ir_string = NULL; |
| |
| if (options->dump_shader) { |
| fprintf(stderr, "%s LLVM IR:\n\n", name); |
| ac_dump_module(llvm_module); |
| fprintf(stderr, "\n"); |
| } |
| |
| if (options->record_ir) { |
| char *llvm_ir = LLVMPrintModuleToString(llvm_module); |
| llvm_ir_string = strdup(llvm_ir); |
| LLVMDisposeMessage(llvm_ir); |
| } |
| |
| int v = radv_llvm_compile(llvm_module, &elf_buffer, &elf_size, ac_llvm); |
| if (v) { |
| fprintf(stderr, "compile failed\n"); |
| } |
| |
| LLVMContextRef ctx = LLVMGetModuleContext(llvm_module); |
| LLVMDisposeModule(llvm_module); |
| LLVMContextDispose(ctx); |
| |
| size_t llvm_ir_size = llvm_ir_string ? strlen(llvm_ir_string) : 0; |
| size_t alloc_size = sizeof(struct radv_shader_binary_rtld) + elf_size + llvm_ir_size + 1; |
| struct radv_shader_binary_rtld *rbin = calloc(1, alloc_size); |
| memcpy(rbin->data, elf_buffer, elf_size); |
| if (llvm_ir_string) |
| memcpy(rbin->data + elf_size, llvm_ir_string, llvm_ir_size + 1); |
| |
| rbin->base.type = RADV_BINARY_TYPE_RTLD; |
| rbin->base.stage = stage; |
| rbin->base.total_size = alloc_size; |
| rbin->elf_size = elf_size; |
| rbin->llvm_ir_size = llvm_ir_size; |
| *rbinary = &rbin->base; |
| |
| free(llvm_ir_string); |
| free(elf_buffer); |
| } |
| |
| void |
| radv_compile_nir_shader(struct ac_llvm_compiler *ac_llvm, |
| struct radv_shader_binary **rbinary, |
| struct radv_shader_info *shader_info, |
| struct nir_shader *const *nir, |
| int nir_count, |
| const struct radv_nir_compiler_options *options) |
| { |
| |
| LLVMModuleRef llvm_module; |
| |
| llvm_module = ac_translate_nir_to_llvm(ac_llvm, nir, nir_count, shader_info, |
| options); |
| |
| ac_compile_llvm_module(ac_llvm, llvm_module, rbinary, |
| nir[nir_count - 1]->info.stage, |
| radv_get_shader_name(shader_info, |
| nir[nir_count - 1]->info.stage), |
| options); |
| |
| /* Determine the ES type (VS or TES) for the GS on GFX9. */ |
| if (options->chip_class >= GFX9) { |
| if (nir_count == 2 && |
| nir[1]->info.stage == MESA_SHADER_GEOMETRY) { |
| shader_info->gs.es_type = nir[0]->info.stage; |
| } |
| } |
| shader_info->wave_size = options->wave_size; |
| } |
| |
| static void |
| ac_gs_copy_shader_emit(struct radv_shader_context *ctx) |
| { |
| LLVMValueRef vtx_offset = |
| LLVMBuildMul(ctx->ac.builder, ctx->abi.vertex_id, |
| LLVMConstInt(ctx->ac.i32, 4, false), ""); |
| LLVMValueRef stream_id; |
| |
| /* Fetch the vertex stream ID. */ |
| if (!ctx->options->use_ngg_streamout && |
| ctx->shader_info->so.num_outputs) { |
| stream_id = |
| ac_unpack_param(&ctx->ac, ctx->streamout_config, 24, 2); |
| } else { |
| stream_id = ctx->ac.i32_0; |
| } |
| |
| LLVMBasicBlockRef end_bb; |
| LLVMValueRef switch_inst; |
| |
| end_bb = LLVMAppendBasicBlockInContext(ctx->ac.context, |
| ctx->main_function, "end"); |
| switch_inst = LLVMBuildSwitch(ctx->ac.builder, stream_id, end_bb, 4); |
| |
| for (unsigned stream = 0; stream < 4; stream++) { |
| unsigned num_components = |
| ctx->shader_info->gs.num_stream_output_components[stream]; |
| LLVMBasicBlockRef bb; |
| unsigned offset; |
| |
| if (stream > 0 && !num_components) |
| continue; |
| |
| if (stream > 0 && !ctx->shader_info->so.num_outputs) |
| continue; |
| |
| bb = LLVMInsertBasicBlockInContext(ctx->ac.context, end_bb, "out"); |
| LLVMAddCase(switch_inst, LLVMConstInt(ctx->ac.i32, stream, 0), bb); |
| LLVMPositionBuilderAtEnd(ctx->ac.builder, bb); |
| |
| offset = 0; |
| for (unsigned i = 0; i < AC_LLVM_MAX_OUTPUTS; ++i) { |
| unsigned output_usage_mask = |
| ctx->shader_info->gs.output_usage_mask[i]; |
| unsigned output_stream = |
| ctx->shader_info->gs.output_streams[i]; |
| int length = util_last_bit(output_usage_mask); |
| |
| if (!(ctx->output_mask & (1ull << i)) || |
| output_stream != stream) |
| continue; |
| |
| for (unsigned j = 0; j < length; j++) { |
| LLVMValueRef value, soffset; |
| |
| if (!(output_usage_mask & (1 << j))) |
| continue; |
| |
| soffset = LLVMConstInt(ctx->ac.i32, |
| offset * |
| ctx->shader->info.gs.vertices_out * 16 * 4, false); |
| |
| offset++; |
| |
| value = ac_build_buffer_load(&ctx->ac, |
| ctx->gsvs_ring[0], |
| 1, ctx->ac.i32_0, |
| vtx_offset, soffset, |
| 0, ac_glc | ac_slc, true, false); |
| |
| LLVMTypeRef type = LLVMGetAllocatedType(ctx->abi.outputs[ac_llvm_reg_index_soa(i, j)]); |
| if (ac_get_type_size(type) == 2) { |
| value = LLVMBuildBitCast(ctx->ac.builder, value, ctx->ac.i32, ""); |
| value = LLVMBuildTrunc(ctx->ac.builder, value, ctx->ac.i16, ""); |
| } |
| |
| LLVMBuildStore(ctx->ac.builder, |
| ac_to_float(&ctx->ac, value), ctx->abi.outputs[ac_llvm_reg_index_soa(i, j)]); |
| } |
| } |
| |
| if (!ctx->options->use_ngg_streamout && |
| ctx->shader_info->so.num_outputs) |
| radv_emit_streamout(ctx, stream); |
| |
| if (stream == 0) { |
| handle_vs_outputs_post(ctx, false, true, |
| &ctx->shader_info->vs.outinfo); |
| } |
| |
| LLVMBuildBr(ctx->ac.builder, end_bb); |
| } |
| |
| LLVMPositionBuilderAtEnd(ctx->ac.builder, end_bb); |
| } |
| |
| void |
| radv_compile_gs_copy_shader(struct ac_llvm_compiler *ac_llvm, |
| struct nir_shader *geom_shader, |
| struct radv_shader_binary **rbinary, |
| struct radv_shader_info *shader_info, |
| const struct radv_nir_compiler_options *options) |
| { |
| struct radv_shader_context ctx = {0}; |
| ctx.options = options; |
| ctx.shader_info = shader_info; |
| |
| enum ac_float_mode float_mode = |
| options->unsafe_math ? AC_FLOAT_MODE_UNSAFE_FP_MATH : |
| AC_FLOAT_MODE_DEFAULT; |
| |
| ac_llvm_context_init(&ctx.ac, ac_llvm, options->chip_class, |
| options->family, float_mode, 64, 64); |
| ctx.context = ctx.ac.context; |
| |
| ctx.is_gs_copy_shader = true; |
| ctx.stage = MESA_SHADER_VERTEX; |
| ctx.shader = geom_shader; |
| |
| create_function(&ctx, MESA_SHADER_VERTEX, false, MESA_SHADER_VERTEX); |
| |
| ac_setup_rings(&ctx); |
| |
| nir_foreach_variable(variable, &geom_shader->outputs) { |
| scan_shader_output_decl(&ctx, variable, geom_shader, MESA_SHADER_VERTEX); |
| ac_handle_shader_output_decl(&ctx.ac, &ctx.abi, geom_shader, |
| variable, MESA_SHADER_VERTEX); |
| } |
| |
| ac_gs_copy_shader_emit(&ctx); |
| |
| LLVMBuildRetVoid(ctx.ac.builder); |
| |
| ac_llvm_finalize_module(&ctx, ac_llvm->passmgr, options); |
| |
| ac_compile_llvm_module(ac_llvm, ctx.ac.module, rbinary, |
| MESA_SHADER_VERTEX, "GS Copy Shader", options); |
| (*rbinary)->is_gs_copy_shader = true; |
| |
| } |