/* * Copyright © 2011 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. */ #ifndef BRW_VEC4_H #define BRW_VEC4_H #include #include "brw_shader.h" #include "main/compiler.h" #include "program/hash_table.h" #include "brw_program.h" #ifdef __cplusplus #include "brw_ir_vec4.h" extern "C" { #endif #include "brw_context.h" #include "brw_eu.h" #include "intel_asm_annotation.h" #ifdef __cplusplus }; /* extern "C" */ #endif #include "glsl/ir.h" struct brw_vec4_compile { GLuint last_scratch; /**< measured in 32-byte (register size) units */ }; #ifdef __cplusplus extern "C" { #endif void brw_vue_setup_prog_key_for_precompile(struct gl_context *ctx, struct brw_vue_prog_key *key, GLuint id, struct gl_program *prog); #ifdef __cplusplus } /* extern "C" */ namespace brw { class vec4_live_variables; /** * The vertex shader front-end. * * Translates either GLSL IR or Mesa IR (for ARB_vertex_program and * fixed-function) into VS IR. */ class vec4_visitor : public backend_shader, public ir_visitor { public: vec4_visitor(const struct brw_compiler *compiler, struct brw_vec4_compile *c, struct gl_program *prog, const struct brw_vue_prog_key *key, struct brw_vue_prog_data *prog_data, struct gl_shader_program *shader_prog, gl_shader_stage stage, void *mem_ctx, bool no_spills, int shader_time_index); ~vec4_visitor(); dst_reg dst_null_f() { return dst_reg(brw_null_reg()); } dst_reg dst_null_d() { return dst_reg(retype(brw_null_reg(), BRW_REGISTER_TYPE_D)); } dst_reg dst_null_ud() { return dst_reg(retype(brw_null_reg(), BRW_REGISTER_TYPE_UD)); } struct brw_vec4_compile * const c; const struct brw_vue_prog_key * const key; struct brw_vue_prog_data * const prog_data; unsigned int sanity_param_count; char *fail_msg; bool failed; /** * GLSL IR currently being processed, which is associated with our * driver IR instructions for debugging purposes. */ const void *base_ir; const char *current_annotation; int first_non_payload_grf; unsigned int max_grf; int *virtual_grf_start; int *virtual_grf_end; brw::vec4_live_variables *live_intervals; dst_reg userplane[MAX_CLIP_PLANES]; dst_reg *variable_storage(ir_variable *var); void reladdr_to_temp(ir_instruction *ir, src_reg *reg, int *num_reladdr); bool need_all_constants_in_pull_buffer; /** * \name Visit methods * * As typical for the visitor pattern, there must be one \c visit method for * each concrete subclass of \c ir_instruction. Virtual base classes within * the hierarchy should not have \c visit methods. */ /*@{*/ virtual void visit(ir_variable *); virtual void visit(ir_loop *); virtual void visit(ir_loop_jump *); virtual void visit(ir_function_signature *); virtual void visit(ir_function *); virtual void visit(ir_expression *); virtual void visit(ir_swizzle *); virtual void visit(ir_dereference_variable *); virtual void visit(ir_dereference_array *); virtual void visit(ir_dereference_record *); virtual void visit(ir_assignment *); virtual void visit(ir_constant *); virtual void visit(ir_call *); virtual void visit(ir_return *); virtual void visit(ir_discard *); virtual void visit(ir_texture *); virtual void visit(ir_if *); virtual void visit(ir_emit_vertex *); virtual void visit(ir_end_primitive *); virtual void visit(ir_barrier *); /*@}*/ src_reg result; /* Regs for vertex results. Generated at ir_variable visiting time * for the ir->location's used. */ dst_reg output_reg[BRW_VARYING_SLOT_COUNT]; const char *output_reg_annotation[BRW_VARYING_SLOT_COUNT]; int *uniform_size; int *uniform_vector_size; int uniform_array_size; /*< Size of uniform_[vector_]size arrays */ int uniforms; src_reg shader_start_time; struct hash_table *variable_ht; bool run(gl_clip_plane *clip_planes); void fail(const char *msg, ...); void setup_uniform_clipplane_values(gl_clip_plane *clip_planes); void setup_uniform_values(ir_variable *ir); void setup_builtin_uniform_values(ir_variable *ir); int setup_uniforms(int payload_reg); bool reg_allocate_trivial(); bool reg_allocate(); void evaluate_spill_costs(float *spill_costs, bool *no_spill); int choose_spill_reg(struct ra_graph *g); void spill_reg(int spill_reg); void move_grf_array_access_to_scratch(); void move_uniform_array_access_to_pull_constants(); void move_push_constants_to_pull_constants(); void split_uniform_registers(); void pack_uniform_registers(); void calculate_live_intervals(); void invalidate_live_intervals(); void split_virtual_grfs(); bool opt_vector_float(); bool opt_reduce_swizzle(); bool dead_code_eliminate(); int var_range_start(unsigned v, unsigned n) const; int var_range_end(unsigned v, unsigned n) const; bool virtual_grf_interferes(int a, int b); bool opt_copy_propagation(bool do_constant_prop = true); bool opt_cse_local(bblock_t *block); bool opt_cse(); bool opt_algebraic(); bool opt_register_coalesce(); bool eliminate_find_live_channel(); bool is_dep_ctrl_unsafe(const vec4_instruction *inst); void opt_set_dependency_control(); void opt_schedule_instructions(); vec4_instruction *emit(vec4_instruction *inst); vec4_instruction *emit(enum opcode opcode); vec4_instruction *emit(enum opcode opcode, const dst_reg &dst); vec4_instruction *emit(enum opcode opcode, const dst_reg &dst, const src_reg &src0); vec4_instruction *emit(enum opcode opcode, const dst_reg &dst, const src_reg &src0, const src_reg &src1); vec4_instruction *emit(enum opcode opcode, const dst_reg &dst, const src_reg &src0, const src_reg &src1, const src_reg &src2); vec4_instruction *emit_before(bblock_t *block, vec4_instruction *inst, vec4_instruction *new_inst); #define EMIT1(op) vec4_instruction *op(const dst_reg &, const src_reg &); #define EMIT2(op) vec4_instruction *op(const dst_reg &, const src_reg &, const src_reg &); #define EMIT3(op) vec4_instruction *op(const dst_reg &, const src_reg &, const src_reg &, const src_reg &); EMIT1(MOV) EMIT1(NOT) EMIT1(RNDD) EMIT1(RNDE) EMIT1(RNDZ) EMIT1(FRC) EMIT1(F32TO16) EMIT1(F16TO32) EMIT2(ADD) EMIT2(MUL) EMIT2(MACH) EMIT2(MAC) EMIT2(AND) EMIT2(OR) EMIT2(XOR) EMIT2(DP3) EMIT2(DP4) EMIT2(DPH) EMIT2(SHL) EMIT2(SHR) EMIT2(ASR) vec4_instruction *CMP(dst_reg dst, src_reg src0, src_reg src1, enum brw_conditional_mod condition); vec4_instruction *IF(src_reg src0, src_reg src1, enum brw_conditional_mod condition); vec4_instruction *IF(enum brw_predicate predicate); EMIT1(SCRATCH_READ) EMIT2(SCRATCH_WRITE) EMIT3(LRP) EMIT1(BFREV) EMIT3(BFE) EMIT2(BFI1) EMIT3(BFI2) EMIT1(FBH) EMIT1(FBL) EMIT1(CBIT) EMIT3(MAD) EMIT2(ADDC) EMIT2(SUBB) #undef EMIT1 #undef EMIT2 #undef EMIT3 int implied_mrf_writes(vec4_instruction *inst); bool try_rewrite_rhs_to_dst(ir_assignment *ir, dst_reg dst, src_reg src, vec4_instruction *pre_rhs_inst, vec4_instruction *last_rhs_inst); /** Walks an exec_list of ir_instruction and sends it through this visitor. */ void visit_instructions(const exec_list *list); void emit_vp_sop(enum brw_conditional_mod condmod, dst_reg dst, src_reg src0, src_reg src1, src_reg one); void emit_bool_to_cond_code(ir_rvalue *ir, enum brw_predicate *predicate); void emit_if_gen6(ir_if *ir); void emit_minmax(enum brw_conditional_mod conditionalmod, dst_reg dst, src_reg src0, src_reg src1); void emit_lrp(const dst_reg &dst, const src_reg &x, const src_reg &y, const src_reg &a); /** Copy any live channel from \p src to the first channel of \p dst. */ void emit_uniformize(const dst_reg &dst, const src_reg &src); void emit_block_move(dst_reg *dst, src_reg *src, const struct glsl_type *type, brw_predicate predicate); void emit_constant_values(dst_reg *dst, ir_constant *value); /** * Emit the correct dot-product instruction for the type of arguments */ void emit_dp(dst_reg dst, src_reg src0, src_reg src1, unsigned elements); void emit_scalar(ir_instruction *ir, enum prog_opcode op, dst_reg dst, src_reg src0); void emit_scalar(ir_instruction *ir, enum prog_opcode op, dst_reg dst, src_reg src0, src_reg src1); src_reg fix_3src_operand(src_reg src); void emit_math(enum opcode opcode, const dst_reg &dst, const src_reg &src0, const src_reg &src1 = src_reg()); src_reg fix_math_operand(src_reg src); void emit_pack_half_2x16(dst_reg dst, src_reg src0); void emit_unpack_half_2x16(dst_reg dst, src_reg src0); void emit_unpack_unorm_4x8(const dst_reg &dst, src_reg src0); void emit_unpack_snorm_4x8(const dst_reg &dst, src_reg src0); void emit_pack_unorm_4x8(const dst_reg &dst, const src_reg &src0); void emit_pack_snorm_4x8(const dst_reg &dst, const src_reg &src0); uint32_t gather_channel(ir_texture *ir, uint32_t sampler); src_reg emit_mcs_fetch(ir_texture *ir, src_reg coordinate, src_reg sampler); void emit_gen6_gather_wa(uint8_t wa, dst_reg dst); void swizzle_result(ir_texture *ir, src_reg orig_val, uint32_t sampler); void emit_ndc_computation(); void emit_psiz_and_flags(dst_reg reg); void emit_clip_distances(dst_reg reg, int offset); vec4_instruction *emit_generic_urb_slot(dst_reg reg, int varying); void emit_urb_slot(dst_reg reg, int varying); void emit_shader_time_begin(); void emit_shader_time_end(); void emit_shader_time_write(int shader_time_subindex, src_reg value); void emit_untyped_atomic(unsigned atomic_op, unsigned surf_index, dst_reg dst, src_reg offset, src_reg src0, src_reg src1); void emit_untyped_surface_read(unsigned surf_index, dst_reg dst, src_reg offset); src_reg get_scratch_offset(bblock_t *block, vec4_instruction *inst, src_reg *reladdr, int reg_offset); src_reg get_pull_constant_offset(bblock_t *block, vec4_instruction *inst, src_reg *reladdr, int reg_offset); void emit_scratch_read(bblock_t *block, vec4_instruction *inst, dst_reg dst, src_reg orig_src, int base_offset); void emit_scratch_write(bblock_t *block, vec4_instruction *inst, int base_offset); void emit_pull_constant_load(bblock_t *block, vec4_instruction *inst, dst_reg dst, src_reg orig_src, int base_offset); void emit_pull_constant_load_reg(dst_reg dst, src_reg surf_index, src_reg offset, bblock_t *before_block, vec4_instruction *before_inst); src_reg emit_resolve_reladdr(int scratch_loc[], bblock_t *block, vec4_instruction *inst, src_reg src); bool try_emit_mad(ir_expression *ir); bool try_emit_b2f_of_compare(ir_expression *ir); void resolve_ud_negate(src_reg *reg); void resolve_bool_comparison(ir_rvalue *rvalue, src_reg *reg); src_reg get_timestamp(); bool process_move_condition(ir_rvalue *ir); void dump_instruction(backend_instruction *inst); void dump_instruction(backend_instruction *inst, FILE *file); void visit_atomic_counter_intrinsic(ir_call *ir); protected: void emit_vertex(); void lower_attributes_to_hw_regs(const int *attribute_map, bool interleaved); void setup_payload_interference(struct ra_graph *g, int first_payload_node, int reg_node_count); virtual dst_reg *make_reg_for_system_value(ir_variable *ir) = 0; virtual void assign_binding_table_offsets(); virtual void setup_payload() = 0; virtual void emit_prolog() = 0; virtual void emit_program_code() = 0; virtual void emit_thread_end() = 0; virtual void emit_urb_write_header(int mrf) = 0; virtual vec4_instruction *emit_urb_write_opcode(bool complete) = 0; virtual int compute_array_stride(ir_dereference_array *ir); private: /** * If true, then register allocation should fail instead of spilling. */ const bool no_spills; int shader_time_index; }; /** * The vertex shader code generator. * * Translates VS IR to actual i965 assembly code. */ class vec4_generator { public: vec4_generator(const struct brw_compiler *compiler, void *log_data, struct gl_shader_program *shader_prog, struct gl_program *prog, struct brw_vue_prog_data *prog_data, void *mem_ctx, bool debug_flag, const char *stage_name, const char *stage_abbrev); ~vec4_generator(); const unsigned *generate_assembly(const cfg_t *cfg, unsigned *asm_size); private: void generate_code(const cfg_t *cfg); void generate_math1_gen4(vec4_instruction *inst, struct brw_reg dst, struct brw_reg src); void generate_math2_gen4(vec4_instruction *inst, struct brw_reg dst, struct brw_reg src0, struct brw_reg src1); void generate_math_gen6(vec4_instruction *inst, struct brw_reg dst, struct brw_reg src0, struct brw_reg src1); void generate_tex(vec4_instruction *inst, struct brw_reg dst, struct brw_reg src, struct brw_reg sampler_index); void generate_vs_urb_write(vec4_instruction *inst); void generate_gs_urb_write(vec4_instruction *inst); void generate_gs_urb_write_allocate(vec4_instruction *inst); void generate_gs_thread_end(vec4_instruction *inst); void generate_gs_set_write_offset(struct brw_reg dst, struct brw_reg src0, struct brw_reg src1); void generate_gs_set_vertex_count(struct brw_reg dst, struct brw_reg src); void generate_gs_svb_write(vec4_instruction *inst, struct brw_reg dst, struct brw_reg src0, struct brw_reg src1); void generate_gs_svb_set_destination_index(vec4_instruction *inst, struct brw_reg dst, struct brw_reg src); void generate_gs_set_dword_2(struct brw_reg dst, struct brw_reg src); void generate_gs_prepare_channel_masks(struct brw_reg dst); void generate_gs_set_channel_masks(struct brw_reg dst, struct brw_reg src); void generate_gs_get_instance_id(struct brw_reg dst); void generate_gs_ff_sync_set_primitives(struct brw_reg dst, struct brw_reg src0, struct brw_reg src1, struct brw_reg src2); void generate_gs_ff_sync(vec4_instruction *inst, struct brw_reg dst, struct brw_reg src0, struct brw_reg src1); void generate_gs_set_primitive_id(struct brw_reg dst); void generate_oword_dual_block_offsets(struct brw_reg m1, struct brw_reg index); void generate_scratch_write(vec4_instruction *inst, struct brw_reg dst, struct brw_reg src, struct brw_reg index); void generate_scratch_read(vec4_instruction *inst, struct brw_reg dst, struct brw_reg index); void generate_pull_constant_load(vec4_instruction *inst, struct brw_reg dst, struct brw_reg index, struct brw_reg offset); void generate_pull_constant_load_gen7(vec4_instruction *inst, struct brw_reg dst, struct brw_reg surf_index, struct brw_reg offset); void generate_set_simd4x2_header_gen9(vec4_instruction *inst, struct brw_reg dst); void generate_unpack_flags(struct brw_reg dst); const struct brw_compiler *compiler; void *log_data; /* Passed to compiler->*_log functions */ const struct brw_device_info *devinfo; struct brw_codegen *p; struct gl_shader_program *shader_prog; const struct gl_program *prog; struct brw_vue_prog_data *prog_data; void *mem_ctx; const char *stage_name; const char *stage_abbrev; const bool debug_flag; }; } /* namespace brw */ #endif /* __cplusplus */ #endif /* BRW_VEC4_H */