| /* |
| * Copyright © 2018 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 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 "tgsi/tgsi_from_mesa.h" |
| #include "st_glsl_types.h" |
| #include "st_nir.h" |
| |
| #include "compiler/nir/nir_builder.h" |
| |
| struct pipe_shader_state * |
| st_nir_finish_builtin_shader(struct st_context *st, |
| nir_shader *nir, |
| const char *name) |
| { |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_screen *screen = pipe->screen; |
| enum pipe_shader_type p_stage = pipe_shader_type_from_mesa(nir->info.stage); |
| bool is_scalar = |
| screen->get_shader_param(screen, p_stage, PIPE_SHADER_CAP_SCALAR_ISA); |
| |
| nir->info.name = ralloc_strdup(nir, name); |
| nir->info.separate_shader = true; |
| if (nir->info.stage == MESA_SHADER_FRAGMENT) |
| nir->info.fs.untyped_color_outputs = true; |
| |
| NIR_PASS_V(nir, nir_lower_global_vars_to_local); |
| NIR_PASS_V(nir, nir_split_var_copies); |
| NIR_PASS_V(nir, nir_lower_var_copies); |
| NIR_PASS_V(nir, nir_lower_system_values); |
| |
| if (is_scalar) { |
| nir_variable_mode mask = |
| (nir->info.stage > MESA_SHADER_VERTEX ? nir_var_shader_in : 0) | |
| (nir->info.stage < MESA_SHADER_FRAGMENT ? nir_var_shader_out : 0); |
| |
| NIR_PASS_V(nir, nir_lower_io_to_scalar_early, mask); |
| } |
| |
| st_nir_opts(nir, is_scalar); |
| |
| nir_shader_gather_info(nir, nir_shader_get_entrypoint(nir)); |
| |
| st_nir_assign_varying_locations(st, nir); |
| |
| st_nir_lower_samplers(screen, nir, NULL, NULL); |
| |
| if (st->ctx->Const.PackedDriverUniformStorage) { |
| NIR_PASS_V(nir, nir_lower_io, nir_var_uniform, st_glsl_type_dword_size, |
| (nir_lower_io_options)0); |
| NIR_PASS_V(nir, nir_lower_uniforms_to_ubo, 4); |
| } else { |
| NIR_PASS_V(nir, nir_lower_io, nir_var_uniform, st_glsl_uniforms_type_size, |
| (nir_lower_io_options)0); |
| } |
| |
| struct pipe_shader_state state = { |
| .type = PIPE_SHADER_IR_NIR, |
| .ir.nir = nir, |
| }; |
| |
| switch (nir->info.stage) { |
| case MESA_SHADER_VERTEX: |
| return pipe->create_vs_state(pipe, &state); |
| case MESA_SHADER_TESS_CTRL: |
| return pipe->create_tcs_state(pipe, &state); |
| case MESA_SHADER_TESS_EVAL: |
| return pipe->create_tes_state(pipe, &state); |
| case MESA_SHADER_GEOMETRY: |
| return pipe->create_gs_state(pipe, &state); |
| case MESA_SHADER_FRAGMENT: |
| return pipe->create_fs_state(pipe, &state); |
| default: |
| unreachable("unsupported shader stage"); |
| return NULL; |
| } |
| } |
| |
| /** |
| * Make a simple shader that copies inputs to corresponding outputs. |
| */ |
| struct pipe_shader_state * |
| st_nir_make_passthrough_shader(struct st_context *st, |
| const char *shader_name, |
| gl_shader_stage stage, |
| unsigned num_vars, |
| unsigned *input_locations, |
| unsigned *output_locations, |
| unsigned *interpolation_modes, |
| unsigned sysval_mask) |
| { |
| struct nir_builder b; |
| const struct glsl_type *vec4 = glsl_vec4_type(); |
| const nir_shader_compiler_options *options = |
| st->ctx->Const.ShaderCompilerOptions[stage].NirOptions; |
| |
| nir_builder_init_simple_shader(&b, NULL, stage, options); |
| |
| char var_name[15]; |
| |
| for (unsigned i = 0; i < num_vars; i++) { |
| nir_variable *in; |
| if (sysval_mask & (1 << i)) { |
| snprintf(var_name, sizeof(var_name), "sys_%u", input_locations[i]); |
| in = nir_variable_create(b.shader, nir_var_system_value, |
| glsl_int_type(), var_name); |
| in->data.interpolation = INTERP_MODE_FLAT; |
| } else { |
| snprintf(var_name, sizeof(var_name), "in_%u", input_locations[i]); |
| in = nir_variable_create(b.shader, nir_var_shader_in, vec4, var_name); |
| } |
| in->data.location = input_locations[i]; |
| if (interpolation_modes) |
| in->data.interpolation = interpolation_modes[i]; |
| |
| snprintf(var_name, sizeof(var_name), "out_%u", output_locations[i]); |
| nir_variable *out = |
| nir_variable_create(b.shader, nir_var_shader_out, in->type, var_name); |
| out->data.location = output_locations[i]; |
| out->data.interpolation = in->data.interpolation; |
| |
| nir_copy_var(&b, out, in); |
| } |
| |
| return st_nir_finish_builtin_shader(st, b.shader, shader_name); |
| } |