| /* |
| * 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 "brw_shader.h" |
| #include "brw_ir_fs.h" |
| #include "brw_fs_builder.h" |
| #include "compiler/nir/nir.h" |
| |
| struct bblock_t; |
| namespace { |
| struct acp_entry; |
| } |
| |
| namespace brw { |
| class fs_live_variables; |
| } |
| |
| struct brw_gs_compile; |
| |
| static inline fs_reg |
| offset(const fs_reg ®, const brw::fs_builder &bld, unsigned delta) |
| { |
| return offset(reg, bld.dispatch_width(), delta); |
| } |
| |
| /** |
| * The fragment shader front-end. |
| * |
| * Translates either GLSL IR or Mesa IR (for ARB_fragment_program) into FS IR. |
| */ |
| class fs_visitor : public backend_shader |
| { |
| public: |
| fs_visitor(const struct brw_compiler *compiler, void *log_data, |
| void *mem_ctx, |
| const void *key, |
| struct brw_stage_prog_data *prog_data, |
| struct gl_program *prog, |
| const nir_shader *shader, |
| unsigned dispatch_width, |
| int shader_time_index, |
| const struct brw_vue_map *input_vue_map = NULL); |
| fs_visitor(const struct brw_compiler *compiler, void *log_data, |
| void *mem_ctx, |
| struct brw_gs_compile *gs_compile, |
| struct brw_gs_prog_data *prog_data, |
| const nir_shader *shader, |
| int shader_time_index); |
| void init(); |
| ~fs_visitor(); |
| |
| fs_reg vgrf(const glsl_type *const type); |
| void import_uniforms(fs_visitor *v); |
| void setup_uniform_clipplane_values(gl_clip_plane *clip_planes); |
| void compute_clip_distance(gl_clip_plane *clip_planes); |
| |
| fs_inst *get_instruction_generating_reg(fs_inst *start, |
| fs_inst *end, |
| const fs_reg ®); |
| |
| void VARYING_PULL_CONSTANT_LOAD(const brw::fs_builder &bld, |
| const fs_reg &dst, |
| const fs_reg &surf_index, |
| const fs_reg &varying_offset, |
| uint32_t const_offset); |
| void DEP_RESOLVE_MOV(const brw::fs_builder &bld, int grf); |
| |
| bool run_fs(bool allow_spilling, bool do_rep_send); |
| bool run_vs(gl_clip_plane *clip_planes); |
| bool run_tcs_single_patch(); |
| bool run_tes(); |
| bool run_gs(); |
| bool run_cs(); |
| void optimize(); |
| void allocate_registers(bool allow_spilling); |
| void setup_fs_payload_gen4(); |
| void setup_fs_payload_gen6(); |
| void setup_vs_payload(); |
| void setup_gs_payload(); |
| void setup_cs_payload(); |
| void fixup_3src_null_dest(); |
| void assign_curb_setup(); |
| void calculate_urb_setup(); |
| void assign_urb_setup(); |
| void convert_attr_sources_to_hw_regs(fs_inst *inst); |
| void assign_vs_urb_setup(); |
| void assign_tcs_single_patch_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(int payload_node_count, |
| int *payload_last_use_ip); |
| void setup_payload_interference(struct ra_graph *g, int payload_reg_count, |
| int first_payload_node); |
| int choose_spill_reg(struct ra_graph *g); |
| void spill_reg(int spill_reg); |
| void split_virtual_grfs(); |
| bool compact_virtual_grfs(); |
| void assign_constant_locations(); |
| void lower_constant_loads(); |
| void invalidate_live_intervals(); |
| void calculate_live_intervals(); |
| void calculate_register_pressure(); |
| void validate(); |
| bool opt_algebraic(); |
| bool opt_redundant_discard_jumps(); |
| bool opt_cse(); |
| bool opt_cse_local(bblock_t *block); |
| bool opt_copy_propagation(); |
| bool try_copy_propagate(fs_inst *inst, int arg, acp_entry *entry); |
| bool try_constant_propagate(fs_inst *inst, acp_entry *entry); |
| bool opt_copy_propagation_local(void *mem_ctx, bblock_t *block, |
| exec_list *acp); |
| bool opt_drop_redundant_mov_to_flags(); |
| bool opt_register_renaming(); |
| bool register_coalesce(); |
| bool compute_to_mrf(); |
| bool eliminate_find_live_channel(); |
| bool dead_code_eliminate(); |
| bool remove_duplicate_mrf_writes(); |
| |
| bool opt_sampler_eot(); |
| bool virtual_grf_interferes(int a, int b); |
| void schedule_instructions(instruction_scheduler_mode mode); |
| void insert_gen4_send_dependency_workarounds(); |
| void insert_gen4_pre_send_dependency_workarounds(bblock_t *block, |
| fs_inst *inst); |
| void insert_gen4_post_send_dependency_workarounds(bblock_t *block, |
| fs_inst *inst); |
| void vfail(const char *msg, va_list args); |
| void fail(const char *msg, ...); |
| void limit_dispatch_width(unsigned n, const char *msg); |
| void lower_uniform_pull_constant_loads(); |
| bool lower_load_payload(); |
| bool lower_pack(); |
| bool lower_d2x(); |
| bool lower_logical_sends(); |
| bool lower_integer_multiplication(); |
| bool lower_minmax(); |
| bool lower_simd_width(); |
| bool opt_combine_constants(); |
| |
| void emit_dummy_fs(); |
| void emit_repclear_shader(); |
| void emit_fragcoord_interpolation(fs_reg wpos); |
| fs_reg *emit_frontfacing_interpolation(); |
| fs_reg *emit_samplepos_setup(); |
| fs_reg *emit_sampleid_setup(); |
| fs_reg *emit_samplemaskin_setup(); |
| fs_reg *emit_vs_system_value(int location); |
| void emit_interpolation_setup_gen4(); |
| void emit_interpolation_setup_gen6(); |
| void compute_sample_position(fs_reg dst, fs_reg int_sample_pos); |
| fs_reg emit_mcs_fetch(const fs_reg &coordinate, unsigned components, |
| const fs_reg &sampler); |
| void emit_gen6_gather_wa(uint8_t wa, fs_reg dst); |
| fs_reg resolve_source_modifiers(const fs_reg &src); |
| void emit_discard_jump(); |
| bool opt_peephole_sel(); |
| bool opt_peephole_predicated_break(); |
| bool opt_saturate_propagation(); |
| bool opt_cmod_propagation(); |
| bool opt_zero_samples(); |
| |
| void emit_nir_code(); |
| void nir_setup_outputs(); |
| void nir_setup_uniforms(); |
| void nir_emit_system_values(); |
| void nir_emit_impl(nir_function_impl *impl); |
| void nir_emit_cf_list(exec_list *list); |
| void nir_emit_if(nir_if *if_stmt); |
| void nir_emit_loop(nir_loop *loop); |
| void nir_emit_block(nir_block *block); |
| void nir_emit_instr(nir_instr *instr); |
| void nir_emit_alu(const brw::fs_builder &bld, nir_alu_instr *instr); |
| void nir_emit_load_const(const brw::fs_builder &bld, |
| nir_load_const_instr *instr); |
| void nir_emit_vs_intrinsic(const brw::fs_builder &bld, |
| nir_intrinsic_instr *instr); |
| void nir_emit_tcs_intrinsic(const brw::fs_builder &bld, |
| nir_intrinsic_instr *instr); |
| void nir_emit_gs_intrinsic(const brw::fs_builder &bld, |
| nir_intrinsic_instr *instr); |
| void nir_emit_fs_intrinsic(const brw::fs_builder &bld, |
| nir_intrinsic_instr *instr); |
| void nir_emit_cs_intrinsic(const brw::fs_builder &bld, |
| nir_intrinsic_instr *instr); |
| void nir_emit_intrinsic(const brw::fs_builder &bld, |
| nir_intrinsic_instr *instr); |
| void nir_emit_tes_intrinsic(const brw::fs_builder &bld, |
| nir_intrinsic_instr *instr); |
| void nir_emit_ssbo_atomic(const brw::fs_builder &bld, |
| int op, nir_intrinsic_instr *instr); |
| void nir_emit_shared_atomic(const brw::fs_builder &bld, |
| int op, nir_intrinsic_instr *instr); |
| void nir_emit_texture(const brw::fs_builder &bld, |
| nir_tex_instr *instr); |
| void nir_emit_jump(const brw::fs_builder &bld, |
| nir_jump_instr *instr); |
| fs_reg get_nir_src(const nir_src &src); |
| fs_reg get_nir_src_imm(const nir_src &src); |
| fs_reg get_nir_dest(const nir_dest &dest); |
| fs_reg get_nir_image_deref(const nir_deref_var *deref); |
| fs_reg get_indirect_offset(nir_intrinsic_instr *instr); |
| void emit_percomp(const brw::fs_builder &bld, const fs_inst &inst, |
| unsigned wr_mask); |
| |
| bool optimize_extract_to_float(nir_alu_instr *instr, |
| const fs_reg &result); |
| bool optimize_frontfacing_ternary(nir_alu_instr *instr, |
| const fs_reg &result); |
| |
| void emit_alpha_test(); |
| fs_inst *emit_single_fb_write(const brw::fs_builder &bld, |
| fs_reg color1, fs_reg color2, |
| fs_reg src0_alpha, unsigned components); |
| void emit_fb_writes(); |
| fs_inst *emit_non_coherent_fb_read(const brw::fs_builder &bld, |
| const fs_reg &dst, unsigned target); |
| void emit_urb_writes(const fs_reg &gs_vertex_count = fs_reg()); |
| void set_gs_stream_control_data_bits(const fs_reg &vertex_count, |
| unsigned stream_id); |
| void emit_gs_control_data_bits(const fs_reg &vertex_count); |
| void emit_gs_end_primitive(const nir_src &vertex_count_nir_src); |
| void emit_gs_vertex(const nir_src &vertex_count_nir_src, |
| unsigned stream_id); |
| void emit_gs_thread_end(); |
| void emit_gs_input_load(const fs_reg &dst, const nir_src &vertex_src, |
| unsigned base_offset, const nir_src &offset_src, |
| unsigned num_components, unsigned first_component); |
| void emit_cs_terminate(); |
| fs_reg *emit_cs_work_group_id_setup(); |
| |
| void emit_barrier(); |
| |
| void emit_shader_time_begin(); |
| void emit_shader_time_end(); |
| void SHADER_TIME_ADD(const brw::fs_builder &bld, |
| int shader_time_subindex, |
| fs_reg value); |
| |
| fs_reg get_timestamp(const brw::fs_builder &bld); |
| |
| struct brw_reg interp_reg(int location, int channel); |
| |
| int implied_mrf_writes(fs_inst *inst); |
| |
| virtual void dump_instructions(); |
| virtual void dump_instructions(const char *name); |
| void dump_instruction(backend_instruction *inst); |
| void dump_instruction(backend_instruction *inst, FILE *file); |
| |
| const void *const key; |
| const struct brw_sampler_prog_key_data *key_tex; |
| |
| struct brw_gs_compile *gs_compile; |
| |
| struct brw_stage_prog_data *prog_data; |
| struct gl_program *prog; |
| |
| const struct brw_vue_map *input_vue_map; |
| |
| int *virtual_grf_start; |
| int *virtual_grf_end; |
| brw::fs_live_variables *live_intervals; |
| |
| int *regs_live_at_ip; |
| |
| /** 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 pull parameter index, |
| * or -1 if this uniform register isn't being uploaded as a pull constant. |
| */ |
| int *pull_constant_loc; |
| |
| /** |
| * 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; |
| |
| fs_reg frag_depth; |
| fs_reg frag_stencil; |
| fs_reg sample_mask; |
| fs_reg outputs[VARYING_SLOT_MAX]; |
| fs_reg dual_src_output; |
| int first_non_payload_grf; |
| /** Either BRW_MAX_GRF or GEN7_MRF_HACK_START */ |
| unsigned max_grf; |
| |
| fs_reg *nir_locals; |
| fs_reg *nir_ssa_values; |
| fs_reg *nir_system_values; |
| |
| bool failed; |
| char *fail_msg; |
| |
| /** Register numbers for thread payload fields. */ |
| struct thread_payload { |
| uint8_t source_depth_reg; |
| uint8_t source_w_reg; |
| uint8_t aa_dest_stencil_reg; |
| uint8_t dest_depth_reg; |
| uint8_t sample_pos_reg; |
| uint8_t sample_mask_in_reg; |
| uint8_t barycentric_coord_reg[BRW_BARYCENTRIC_MODE_COUNT]; |
| uint8_t local_invocation_id_reg; |
| |
| /** The number of thread payload registers the hardware will supply. */ |
| uint8_t num_regs; |
| } payload; |
| |
| bool source_depth_to_render_target; |
| bool runtime_check_aads_emit; |
| |
| fs_reg pixel_x; |
| fs_reg pixel_y; |
| fs_reg wpos_w; |
| fs_reg pixel_w; |
| fs_reg delta_xy[BRW_BARYCENTRIC_MODE_COUNT]; |
| fs_reg shader_start_time; |
| fs_reg userplane[MAX_CLIP_PLANES]; |
| fs_reg final_gs_vertex_count; |
| fs_reg control_data_bits; |
| fs_reg invocation_id; |
| |
| unsigned grf_used; |
| bool spilled_any_registers; |
| |
| const unsigned dispatch_width; /**< 8, 16 or 32 */ |
| unsigned min_dispatch_width; |
| unsigned max_dispatch_width; |
| |
| int shader_time_index; |
| |
| unsigned promoted_constants; |
| brw::fs_builder bld; |
| }; |
| |
| /** |
| * The fragment shader code generator. |
| * |
| * Translates FS IR to actual i965 assembly code. |
| */ |
| class fs_generator |
| { |
| public: |
| fs_generator(const struct brw_compiler *compiler, void *log_data, |
| void *mem_ctx, |
| const void *key, |
| struct brw_stage_prog_data *prog_data, |
| unsigned promoted_constants, |
| bool runtime_check_aads_emit, |
| gl_shader_stage stage); |
| ~fs_generator(); |
| |
| void enable_debug(const char *shader_name); |
| int generate_code(const cfg_t *cfg, int dispatch_width); |
| const unsigned *get_assembly(unsigned int *assembly_size); |
| |
| private: |
| void fire_fb_write(fs_inst *inst, |
| struct brw_reg payload, |
| struct brw_reg implied_header, |
| GLuint nr); |
| void generate_fb_write(fs_inst *inst, struct brw_reg payload); |
| void generate_fb_read(fs_inst *inst, struct brw_reg dst, |
| struct brw_reg payload); |
| void generate_urb_read(fs_inst *inst, struct brw_reg dst, struct brw_reg payload); |
| void generate_urb_write(fs_inst *inst, struct brw_reg payload); |
| void generate_cs_terminate(fs_inst *inst, struct brw_reg payload); |
| void generate_barrier(fs_inst *inst, struct brw_reg src); |
| void generate_linterp(fs_inst *inst, struct brw_reg dst, |
| struct brw_reg *src); |
| void generate_tex(fs_inst *inst, struct brw_reg dst, struct brw_reg src, |
| struct brw_reg surface_index, |
| struct brw_reg sampler_index); |
| void generate_get_buffer_size(fs_inst *inst, struct brw_reg dst, |
| struct brw_reg src, |
| struct brw_reg surf_index); |
| void generate_ddx(enum opcode op, struct brw_reg dst, struct brw_reg src); |
| void generate_ddy(enum opcode op, struct brw_reg dst, struct brw_reg src); |
| void generate_scratch_write(fs_inst *inst, struct brw_reg src); |
| void generate_scratch_read(fs_inst *inst, struct brw_reg dst); |
| void generate_scratch_read_gen7(fs_inst *inst, struct brw_reg dst); |
| void generate_uniform_pull_constant_load(fs_inst *inst, struct brw_reg dst, |
| struct brw_reg index, |
| struct brw_reg offset); |
| void generate_uniform_pull_constant_load_gen7(fs_inst *inst, |
| struct brw_reg dst, |
| struct brw_reg surf_index, |
| struct brw_reg offset); |
| void generate_varying_pull_constant_load_gen4(fs_inst *inst, |
| struct brw_reg dst, |
| struct brw_reg index); |
| void generate_varying_pull_constant_load_gen7(fs_inst *inst, |
| struct brw_reg dst, |
| struct brw_reg index, |
| struct brw_reg offset); |
| void generate_mov_dispatch_to_flags(fs_inst *inst); |
| |
| void generate_pixel_interpolator_query(fs_inst *inst, |
| struct brw_reg dst, |
| struct brw_reg src, |
| struct brw_reg msg_data, |
| unsigned msg_type); |
| |
| void generate_set_sample_id(fs_inst *inst, |
| struct brw_reg dst, |
| struct brw_reg src0, |
| struct brw_reg src1); |
| |
| void generate_set_simd4x2_offset(fs_inst *inst, |
| struct brw_reg dst, |
| struct brw_reg offset); |
| void generate_discard_jump(fs_inst *inst); |
| |
| void generate_pack_half_2x16_split(fs_inst *inst, |
| struct brw_reg dst, |
| struct brw_reg x, |
| struct brw_reg y); |
| void generate_unpack_half_2x16_split(fs_inst *inst, |
| struct brw_reg dst, |
| struct brw_reg src); |
| |
| void generate_shader_time_add(fs_inst *inst, |
| struct brw_reg payload, |
| struct brw_reg offset, |
| struct brw_reg value); |
| |
| void generate_mov_indirect(fs_inst *inst, |
| struct brw_reg dst, |
| struct brw_reg reg, |
| struct brw_reg indirect_byte_offset); |
| |
| bool patch_discard_jumps_to_fb_writes(); |
| |
| const struct brw_compiler *compiler; |
| void *log_data; /* Passed to compiler->*_log functions */ |
| |
| const struct gen_device_info *devinfo; |
| |
| struct brw_codegen *p; |
| const void * const key; |
| struct brw_stage_prog_data * const prog_data; |
| |
| unsigned dispatch_width; /**< 8, 16 or 32 */ |
| |
| exec_list discard_halt_patches; |
| unsigned promoted_constants; |
| bool runtime_check_aads_emit; |
| bool debug_flag; |
| const char *shader_name; |
| gl_shader_stage stage; |
| void *mem_ctx; |
| }; |
| |
| bool brw_do_channel_expressions(struct exec_list *instructions); |
| bool brw_do_vector_splitting(struct exec_list *instructions); |
| |
| void shuffle_32bit_load_result_to_64bit_data(const brw::fs_builder &bld, |
| const fs_reg &dst, |
| const fs_reg &src, |
| uint32_t components); |
| |
| void shuffle_64bit_data_for_32bit_write(const brw::fs_builder &bld, |
| const fs_reg &dst, |
| const fs_reg &src, |
| uint32_t components); |
| fs_reg setup_imm_df(const brw::fs_builder &bld, |
| double v); |
| |
| enum brw_barycentric_mode brw_barycentric_mode(enum glsl_interp_mode mode, |
| nir_intrinsic_op op); |
