| /* |
| * Copyright © 2010 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. |
| * |
| * Authors: |
| * Eric Anholt <eric@anholt.net> |
| * |
| */ |
| |
| #pragma once |
| |
| #include "elk_shader.h" |
| #include "elk_ir_fs.h" |
| #include "elk_fs_live_variables.h" |
| #include "elk_ir_performance.h" |
| #include "compiler/nir/nir.h" |
| |
| struct elk_bblock_t; |
| namespace { |
| struct acp_entry; |
| } |
| |
| class elk_fs_visitor; |
| |
| namespace elk { |
| /** |
| * Register pressure analysis of a shader. Estimates how many registers |
| * are live at any point of the program in GRF units. |
| */ |
| struct register_pressure { |
| register_pressure(const elk_fs_visitor *v); |
| register_pressure(const register_pressure &) = delete; |
| ~register_pressure(); |
| register_pressure & operator=(const register_pressure &) = delete; |
| |
| analysis_dependency_class |
| dependency_class() const |
| { |
| return (DEPENDENCY_INSTRUCTION_IDENTITY | |
| DEPENDENCY_INSTRUCTION_DATA_FLOW | |
| DEPENDENCY_VARIABLES); |
| } |
| |
| bool |
| validate(const elk_fs_visitor *) const |
| { |
| /* FINISHME */ |
| return true; |
| } |
| |
| unsigned *regs_live_at_ip; |
| }; |
| } |
| |
| struct elk_gs_compile; |
| |
| namespace elk { |
| class fs_builder; |
| } |
| |
| struct elk_shader_stats { |
| const char *scheduler_mode; |
| unsigned promoted_constants; |
| unsigned spill_count; |
| unsigned fill_count; |
| unsigned max_register_pressure; |
| }; |
| |
| /** Register numbers for thread payload fields. */ |
| struct elk_elk_thread_payload { |
| /** The number of thread payload registers the hardware will supply. */ |
| uint8_t num_regs; |
| |
| virtual ~elk_elk_thread_payload() = default; |
| |
| protected: |
| elk_elk_thread_payload() : num_regs() {} |
| }; |
| |
| struct elk_vs_thread_payload : public elk_elk_thread_payload { |
| elk_vs_thread_payload(const elk_fs_visitor &v); |
| |
| elk_fs_reg urb_handles; |
| }; |
| |
| struct elk_tcs_thread_payload : public elk_elk_thread_payload { |
| elk_tcs_thread_payload(const elk_fs_visitor &v); |
| |
| elk_fs_reg patch_urb_output; |
| elk_fs_reg primitive_id; |
| elk_fs_reg icp_handle_start; |
| }; |
| |
| struct elk_tes_thread_payload : public elk_elk_thread_payload { |
| elk_tes_thread_payload(const elk_fs_visitor &v); |
| |
| elk_fs_reg patch_urb_input; |
| elk_fs_reg primitive_id; |
| elk_fs_reg coords[3]; |
| elk_fs_reg urb_output; |
| }; |
| |
| struct elk_gs_thread_payload : public elk_elk_thread_payload { |
| elk_gs_thread_payload(elk_fs_visitor &v); |
| |
| elk_fs_reg urb_handles; |
| elk_fs_reg primitive_id; |
| elk_fs_reg instance_id; |
| elk_fs_reg icp_handle_start; |
| }; |
| |
| struct elk_fs_thread_payload : public elk_elk_thread_payload { |
| elk_fs_thread_payload(const elk_fs_visitor &v, |
| bool &source_depth_to_render_target, |
| bool &runtime_check_aads_emit); |
| |
| uint8_t subspan_coord_reg[2]; |
| uint8_t source_depth_reg[2]; |
| uint8_t source_w_reg[2]; |
| uint8_t aa_dest_stencil_reg[2]; |
| uint8_t dest_depth_reg[2]; |
| uint8_t sample_pos_reg[2]; |
| uint8_t sample_mask_in_reg[2]; |
| uint8_t depth_w_coef_reg; |
| uint8_t barycentric_coord_reg[ELK_BARYCENTRIC_MODE_COUNT][2]; |
| }; |
| |
| struct elk_cs_thread_payload : public elk_elk_thread_payload { |
| elk_cs_thread_payload(const elk_fs_visitor &v); |
| |
| void load_subgroup_id(const elk::fs_builder &bld, elk_fs_reg &dest) const; |
| |
| elk_fs_reg local_invocation_id[3]; |
| |
| protected: |
| elk_fs_reg subgroup_id_; |
| }; |
| |
| class elk_fs_instruction_scheduler; |
| |
| /** |
| * The fragment shader front-end. |
| * |
| * Translates either GLSL IR or Mesa IR (for ARB_fragment_program) into FS IR. |
| */ |
| class elk_fs_visitor : public elk_backend_shader |
| { |
| public: |
| elk_fs_visitor(const struct elk_compiler *compiler, |
| const struct elk_compile_params *params, |
| const elk_base_prog_key *key, |
| struct elk_stage_prog_data *prog_data, |
| const nir_shader *shader, |
| unsigned dispatch_width, |
| bool needs_register_pressure, |
| bool debug_enabled); |
| elk_fs_visitor(const struct elk_compiler *compiler, |
| const struct elk_compile_params *params, |
| const elk_wm_prog_key *key, |
| struct elk_wm_prog_data *prog_data, |
| const nir_shader *shader, |
| unsigned dispatch_width, |
| bool needs_register_pressure, |
| bool debug_enabled); |
| elk_fs_visitor(const struct elk_compiler *compiler, |
| const struct elk_compile_params *params, |
| struct elk_gs_compile *gs_compile, |
| struct elk_gs_prog_data *prog_data, |
| const nir_shader *shader, |
| bool needs_register_pressure, |
| bool debug_enabled); |
| elk_fs_visitor(const elk_fs_visitor &) = delete; |
| void init(); |
| ~elk_fs_visitor(); |
| |
| elk_fs_visitor & operator=(const elk_fs_visitor &) = delete; |
| |
| elk_fs_reg vgrf(const glsl_type *const type); |
| void import_uniforms(elk_fs_visitor *v); |
| |
| void VARYING_PULL_CONSTANT_LOAD(const elk::fs_builder &bld, |
| const elk_fs_reg &dst, |
| const elk_fs_reg &surface, |
| const elk_fs_reg &surface_handle, |
| const elk_fs_reg &varying_offset, |
| uint32_t const_offset, |
| uint8_t alignment, |
| unsigned components); |
| void DEP_RESOLVE_MOV(const elk::fs_builder &bld, int grf); |
| |
| bool run_fs(bool allow_spilling, bool do_rep_send); |
| bool run_vs(); |
| bool run_tcs(); |
| bool run_tes(); |
| bool run_gs(); |
| bool run_cs(bool allow_spilling); |
| void optimize(); |
| void allocate_registers(bool allow_spilling); |
| uint32_t compute_max_register_pressure(); |
| void fixup_3src_null_dest(); |
| void assign_curb_setup(); |
| void assign_urb_setup(); |
| void convert_attr_sources_to_hw_regs(elk_fs_inst *inst); |
| void assign_vs_urb_setup(); |
| void assign_tcs_urb_setup(); |
| void assign_tes_urb_setup(); |
| void assign_gs_urb_setup(); |
| bool assign_regs(bool allow_spilling, bool spill_all); |
| void assign_regs_trivial(); |
| void calculate_payload_ranges(unsigned payload_node_count, |
| int *payload_last_use_ip) const; |
| bool split_virtual_grfs(); |
| bool compact_virtual_grfs(); |
| void assign_constant_locations(); |
| bool get_pull_locs(const elk_fs_reg &src, unsigned *out_surf_index, |
| unsigned *out_pull_index); |
| bool lower_constant_loads(); |
| virtual void invalidate_analysis(elk::analysis_dependency_class c); |
| |
| #ifndef NDEBUG |
| void validate(); |
| #else |
| void validate() {} |
| #endif |
| |
| bool opt_algebraic(); |
| bool opt_redundant_halt(); |
| bool opt_cse(); |
| bool opt_cse_local(const elk::fs_live_variables &live, elk_bblock_t *block, int &ip); |
| |
| bool opt_copy_propagation(); |
| bool opt_bank_conflicts(); |
| bool register_coalesce(); |
| bool compute_to_mrf(); |
| bool eliminate_find_live_channel(); |
| bool dead_code_eliminate(); |
| bool remove_duplicate_mrf_writes(); |
| bool remove_extra_rounding_modes(); |
| |
| elk_fs_instruction_scheduler *prepare_scheduler(void *mem_ctx); |
| void schedule_instructions_pre_ra(elk_fs_instruction_scheduler *sched, |
| instruction_scheduler_mode mode); |
| void schedule_instructions_post_ra(); |
| |
| void insert_gfx4_send_dependency_workarounds(); |
| void insert_gfx4_pre_send_dependency_workarounds(elk_bblock_t *block, |
| elk_fs_inst *inst); |
| void insert_gfx4_post_send_dependency_workarounds(elk_bblock_t *block, |
| elk_fs_inst *inst); |
| bool workaround_source_arf_before_eot(); |
| void vfail(const char *msg, va_list args); |
| void fail(const char *msg, ...); |
| void limit_dispatch_width(unsigned n, const char *msg); |
| bool lower_uniform_pull_constant_loads(); |
| bool lower_load_payload(); |
| bool lower_pack(); |
| bool lower_regioning(); |
| bool lower_logical_sends(); |
| bool lower_integer_multiplication(); |
| bool lower_minmax(); |
| bool lower_simd_width(); |
| bool lower_barycentrics(); |
| bool lower_find_live_channel(); |
| bool lower_scoreboard(); |
| bool lower_sub_sat(); |
| bool opt_combine_constants(); |
| |
| void emit_repclear_shader(); |
| void emit_interpolation_setup_gfx4(); |
| void emit_interpolation_setup_gfx6(); |
| bool opt_peephole_sel(); |
| bool opt_saturate_propagation(); |
| bool opt_cmod_propagation(); |
| bool opt_zero_samples(); |
| |
| void set_tcs_invocation_id(); |
| |
| void emit_alpha_test(); |
| elk_fs_inst *emit_single_fb_write(const elk::fs_builder &bld, |
| elk_fs_reg color1, elk_fs_reg color2, |
| elk_fs_reg src0_alpha, unsigned components); |
| void do_emit_fb_writes(int nr_color_regions, bool replicate_alpha); |
| void emit_fb_writes(); |
| void emit_urb_writes(const elk_fs_reg &gs_vertex_count = elk_fs_reg()); |
| void emit_gs_control_data_bits(const elk_fs_reg &vertex_count); |
| void emit_gs_thread_end(); |
| bool mark_last_urb_write_with_eot(); |
| void emit_tcs_thread_end(); |
| void emit_urb_fence(); |
| void emit_cs_terminate(); |
| |
| elk_fs_reg interp_reg(const elk::fs_builder &bld, unsigned location, |
| unsigned channel, unsigned comp); |
| elk_fs_reg per_primitive_reg(const elk::fs_builder &bld, |
| int location, unsigned comp); |
| |
| virtual void dump_instruction_to_file(const elk_backend_instruction *inst, FILE *file) const; |
| virtual void dump_instructions_to_file(FILE *file) const; |
| |
| const elk_base_prog_key *const key; |
| const struct elk_sampler_prog_key_data *key_tex; |
| |
| struct elk_gs_compile *gs_compile; |
| |
| struct elk_stage_prog_data *prog_data; |
| |
| elk_analysis<elk::fs_live_variables, elk_backend_shader> live_analysis; |
| elk_analysis<elk::register_pressure, elk_fs_visitor> regpressure_analysis; |
| elk_analysis<elk::performance, elk_fs_visitor> performance_analysis; |
| |
| /** Number of uniform variable components visited. */ |
| unsigned uniforms; |
| |
| /** Byte-offset for the next available spot in the scratch space buffer. */ |
| unsigned last_scratch; |
| |
| /** |
| * Array mapping UNIFORM register numbers to the push parameter index, |
| * or -1 if this uniform register isn't being uploaded as a push constant. |
| */ |
| int *push_constant_loc; |
| |
| elk_fs_reg frag_depth; |
| elk_fs_reg frag_stencil; |
| elk_fs_reg sample_mask; |
| elk_fs_reg outputs[VARYING_SLOT_MAX]; |
| elk_fs_reg dual_src_output; |
| int first_non_payload_grf; |
| /** Either ELK_MAX_GRF or GFX7_MRF_HACK_START */ |
| unsigned max_grf; |
| |
| bool failed; |
| char *fail_msg; |
| |
| elk_elk_thread_payload *payload_; |
| |
| elk_elk_thread_payload &payload() { |
| return *this->payload_; |
| } |
| |
| elk_vs_thread_payload &vs_payload() { |
| assert(stage == MESA_SHADER_VERTEX); |
| return *static_cast<elk_vs_thread_payload *>(this->payload_); |
| } |
| |
| elk_tcs_thread_payload &tcs_payload() { |
| assert(stage == MESA_SHADER_TESS_CTRL); |
| return *static_cast<elk_tcs_thread_payload *>(this->payload_); |
| } |
| |
| elk_tes_thread_payload &tes_payload() { |
| assert(stage == MESA_SHADER_TESS_EVAL); |
| return *static_cast<elk_tes_thread_payload *>(this->payload_); |
| } |
| |
| elk_gs_thread_payload &gs_payload() { |
| assert(stage == MESA_SHADER_GEOMETRY); |
| return *static_cast<elk_gs_thread_payload *>(this->payload_); |
| } |
| |
| elk_fs_thread_payload &fs_payload() { |
| assert(stage == MESA_SHADER_FRAGMENT); |
| return *static_cast<elk_fs_thread_payload *>(this->payload_); |
| }; |
| |
| elk_cs_thread_payload &cs_payload() { |
| assert(gl_shader_stage_uses_workgroup(stage)); |
| return *static_cast<elk_cs_thread_payload *>(this->payload_); |
| } |
| |
| bool source_depth_to_render_target; |
| bool runtime_check_aads_emit; |
| |
| elk_fs_reg uw_pixel_x; |
| elk_fs_reg uw_pixel_y; |
| elk_fs_reg pixel_z; |
| elk_fs_reg delta_xy[ELK_BARYCENTRIC_MODE_COUNT]; |
| elk_fs_reg final_gs_vertex_count; |
| elk_fs_reg control_data_bits; |
| elk_fs_reg invocation_id; |
| |
| unsigned grf_used; |
| bool spilled_any_registers; |
| bool needs_register_pressure; |
| |
| const unsigned dispatch_width; /**< 8, 16 or 32 */ |
| unsigned max_dispatch_width; |
| |
| /* The API selected subgroup size */ |
| unsigned api_subgroup_size; /**< 0, 8, 16, 32 */ |
| |
| struct elk_shader_stats shader_stats; |
| |
| void lower_mul_dword_inst(elk_fs_inst *inst, elk_bblock_t *block); |
| void lower_mul_qword_inst(elk_fs_inst *inst, elk_bblock_t *block); |
| void lower_mulh_inst(elk_fs_inst *inst, elk_bblock_t *block); |
| |
| unsigned workgroup_size() const; |
| |
| void debug_optimizer(const nir_shader *nir, |
| const char *pass_name, |
| int iteration, int pass_num) const; |
| }; |
| |
| /** |
| * Return the flag register used in fragment shaders to keep track of live |
| * samples. On Gfx7+ we use f1.0-f1.1 to allow discard jumps in SIMD32 |
| * dispatch mode, while earlier generations are constrained to f0.1, which |
| * limits the dispatch width to SIMD16 for fragment shaders that use discard. |
| */ |
| static inline unsigned |
| sample_mask_flag_subreg(const elk_fs_visitor &s) |
| { |
| assert(s.stage == MESA_SHADER_FRAGMENT); |
| return s.devinfo->ver >= 7 ? 2 : 1; |
| } |
| |
| /** |
| * The fragment shader code generator. |
| * |
| * Translates FS IR to actual i965 assembly code. |
| */ |
| class elk_fs_generator |
| { |
| public: |
| elk_fs_generator(const struct elk_compiler *compiler, |
| const struct elk_compile_params *params, |
| struct elk_stage_prog_data *prog_data, |
| bool runtime_check_aads_emit, |
| gl_shader_stage stage); |
| ~elk_fs_generator(); |
| |
| void enable_debug(const char *shader_name); |
| int generate_code(const elk_cfg_t *cfg, int dispatch_width, |
| struct elk_shader_stats shader_stats, |
| const elk::performance &perf, |
| struct elk_compile_stats *stats); |
| void add_const_data(void *data, unsigned size); |
| const unsigned *get_assembly(); |
| |
| private: |
| void fire_fb_write(elk_fs_inst *inst, |
| struct elk_reg payload, |
| struct elk_reg implied_header, |
| GLuint nr); |
| void generate_send(elk_fs_inst *inst, |
| struct elk_reg dst, |
| struct elk_reg desc, |
| struct elk_reg payload); |
| void generate_fb_write(elk_fs_inst *inst, struct elk_reg payload); |
| void generate_cs_terminate(elk_fs_inst *inst, struct elk_reg payload); |
| void generate_barrier(elk_fs_inst *inst, struct elk_reg src); |
| bool generate_linterp(elk_fs_inst *inst, struct elk_reg dst, |
| struct elk_reg *src); |
| void generate_tex(elk_fs_inst *inst, struct elk_reg dst, |
| struct elk_reg surface_index, |
| struct elk_reg sampler_index); |
| void generate_ddx(const elk_fs_inst *inst, |
| struct elk_reg dst, struct elk_reg src); |
| void generate_ddy(const elk_fs_inst *inst, |
| struct elk_reg dst, struct elk_reg src); |
| void generate_scratch_write(elk_fs_inst *inst, struct elk_reg src); |
| void generate_scratch_read(elk_fs_inst *inst, struct elk_reg dst); |
| void generate_scratch_read_gfx7(elk_fs_inst *inst, struct elk_reg dst); |
| void generate_scratch_header(elk_fs_inst *inst, struct elk_reg dst); |
| void generate_uniform_pull_constant_load(elk_fs_inst *inst, struct elk_reg dst, |
| struct elk_reg index, |
| struct elk_reg offset); |
| void generate_varying_pull_constant_load_gfx4(elk_fs_inst *inst, |
| struct elk_reg dst, |
| struct elk_reg index); |
| |
| void generate_set_sample_id(elk_fs_inst *inst, |
| struct elk_reg dst, |
| struct elk_reg src0, |
| struct elk_reg src1); |
| |
| void generate_halt(elk_fs_inst *inst); |
| |
| void generate_mov_indirect(elk_fs_inst *inst, |
| struct elk_reg dst, |
| struct elk_reg reg, |
| struct elk_reg indirect_byte_offset); |
| |
| void generate_shuffle(elk_fs_inst *inst, |
| struct elk_reg dst, |
| struct elk_reg src, |
| struct elk_reg idx); |
| |
| void generate_quad_swizzle(const elk_fs_inst *inst, |
| struct elk_reg dst, struct elk_reg src, |
| unsigned swiz); |
| |
| bool patch_halt_jumps(); |
| |
| const struct elk_compiler *compiler; |
| const struct elk_compile_params *params; |
| |
| const struct intel_device_info *devinfo; |
| |
| struct elk_codegen *p; |
| struct elk_stage_prog_data * const prog_data; |
| |
| unsigned dispatch_width; /**< 8, 16 or 32 */ |
| |
| exec_list discard_halt_patches; |
| bool runtime_check_aads_emit; |
| bool debug_flag; |
| const char *shader_name; |
| gl_shader_stage stage; |
| void *mem_ctx; |
| }; |
| |
| namespace elk { |
| elk_fs_reg |
| fetch_payload_reg(const elk::fs_builder &bld, uint8_t regs[2], |
| elk_reg_type type = ELK_REGISTER_TYPE_F, |
| unsigned n = 1); |
| |
| elk_fs_reg |
| fetch_barycentric_reg(const elk::fs_builder &bld, uint8_t regs[2]); |
| |
| inline elk_fs_reg |
| dynamic_msaa_flags(const struct elk_wm_prog_data *wm_prog_data) |
| { |
| return elk_fs_reg(UNIFORM, wm_prog_data->msaa_flags_param, |
| ELK_REGISTER_TYPE_UD); |
| } |
| |
| void |
| check_dynamic_msaa_flag(const fs_builder &bld, |
| const struct elk_wm_prog_data *wm_prog_data, |
| enum intel_msaa_flags flag); |
| |
| bool |
| lower_src_modifiers(elk_fs_visitor *v, elk_bblock_t *block, elk_fs_inst *inst, unsigned i); |
| } |
| |
| void elk_shuffle_from_32bit_read(const elk::fs_builder &bld, |
| const elk_fs_reg &dst, |
| const elk_fs_reg &src, |
| uint32_t first_component, |
| uint32_t components); |
| |
| elk_fs_reg elk_setup_imm_df(const elk::fs_builder &bld, |
| double v); |
| |
| elk_fs_reg elk_setup_imm_b(const elk::fs_builder &bld, |
| int8_t v); |
| |
| elk_fs_reg elk_setup_imm_ub(const elk::fs_builder &bld, |
| uint8_t v); |
| |
| enum elk_barycentric_mode elk_barycentric_mode(nir_intrinsic_instr *intr); |
| |
| uint32_t elk_fb_write_msg_control(const elk_fs_inst *inst, |
| const struct elk_wm_prog_data *prog_data); |
| |
| void elk_compute_urb_setup_index(struct elk_wm_prog_data *wm_prog_data); |
| |
| bool elk_nir_lower_simd(nir_shader *nir, unsigned dispatch_width); |
| |
| elk_fs_reg elk_sample_mask_reg(const elk::fs_builder &bld); |
| void elk_emit_predicate_on_sample_mask(const elk::fs_builder &bld, elk_fs_inst *inst); |
| |
| int elk_get_subgroup_id_param_index(const intel_device_info *devinfo, |
| const elk_stage_prog_data *prog_data); |
| |
| void nir_to_elk(elk_fs_visitor *s); |
