/* * Copyright © 2015-2016 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 "brw_compiler.h" #include "brw_shader.h" #include "brw_eu.h" #include "dev/gen_debug.h" #include "compiler/nir/nir.h" #include "main/errors.h" #include "util/debug.h" #define COMMON_OPTIONS \ .lower_sub = true, \ .lower_fdiv = true, \ .lower_scmp = true, \ .lower_flrp16 = true, \ .lower_fmod = true, \ .lower_bitfield_extract = true, \ .lower_bitfield_insert = true, \ .lower_uadd_carry = true, \ .lower_usub_borrow = true, \ .lower_fdiv = true, \ .lower_flrp64 = true, \ .lower_isign = true, \ .lower_ldexp = true, \ .lower_device_index_to_zero = true, \ .vectorize_io = true, \ .use_interpolated_input_intrinsics = true, \ .vertex_id_zero_based = true, \ .lower_base_vertex = true, \ .use_scoped_barrier = true, \ .support_16bit_alu = true, \ .lower_uniforms_to_ubo = true #define COMMON_SCALAR_OPTIONS \ .lower_to_scalar = true, \ .lower_pack_half_2x16 = true, \ .lower_pack_snorm_2x16 = true, \ .lower_pack_snorm_4x8 = true, \ .lower_pack_unorm_2x16 = true, \ .lower_pack_unorm_4x8 = true, \ .lower_unpack_half_2x16 = true, \ .lower_unpack_snorm_2x16 = true, \ .lower_unpack_snorm_4x8 = true, \ .lower_unpack_unorm_2x16 = true, \ .lower_unpack_unorm_4x8 = true, \ .lower_usub_sat64 = true, \ .lower_hadd64 = true, \ .lower_bfe_with_two_constants = true, \ .max_unroll_iterations = 32 static const struct nir_shader_compiler_options scalar_nir_options = { COMMON_OPTIONS, COMMON_SCALAR_OPTIONS, }; static const struct nir_shader_compiler_options vector_nir_options = { COMMON_OPTIONS, /* In the vec4 backend, our dpN instruction replicates its result to all the * components of a vec4. We would like NIR to give us replicated fdot * instructions because it can optimize better for us. */ .fdot_replicates = true, .lower_pack_snorm_2x16 = true, .lower_pack_unorm_2x16 = true, .lower_unpack_snorm_2x16 = true, .lower_unpack_unorm_2x16 = true, .lower_extract_byte = true, .lower_extract_word = true, .intel_vec4 = true, .max_unroll_iterations = 32, }; struct brw_compiler * brw_compiler_create(void *mem_ctx, const struct gen_device_info *devinfo) { struct brw_compiler *compiler = rzalloc(mem_ctx, struct brw_compiler); compiler->devinfo = devinfo; brw_fs_alloc_reg_sets(compiler); brw_vec4_alloc_reg_set(compiler); compiler->precise_trig = env_var_as_boolean("INTEL_PRECISE_TRIG", false); compiler->use_tcs_8_patch = devinfo->gen >= 12 || (devinfo->gen >= 9 && (INTEL_DEBUG & DEBUG_TCS_EIGHT_PATCH)); /* Default to the sampler since that's what we've done since forever */ compiler->indirect_ubos_use_sampler = true; /* There is no vec4 mode on Gen10+, and we don't use it at all on Gen8+. */ for (int i = MESA_SHADER_VERTEX; i < MESA_ALL_SHADER_STAGES; i++) { compiler->scalar_stage[i] = devinfo->gen >= 8 || i == MESA_SHADER_FRAGMENT || i == MESA_SHADER_COMPUTE; } nir_lower_int64_options int64_options = nir_lower_imul64 | nir_lower_isign64 | nir_lower_divmod64 | nir_lower_imul_high64; nir_lower_doubles_options fp64_options = nir_lower_drcp | nir_lower_dsqrt | nir_lower_drsq | nir_lower_dtrunc | nir_lower_dfloor | nir_lower_dceil | nir_lower_dfract | nir_lower_dround_even | nir_lower_dmod | nir_lower_dsub | nir_lower_ddiv; if (!devinfo->has_64bit_float || (INTEL_DEBUG & DEBUG_SOFT64)) { int64_options |= (nir_lower_int64_options)~0; fp64_options |= nir_lower_fp64_full_software; } /* The Bspec's section tittled "Instruction_multiply[DevBDW+]" claims that * destination type can be Quadword and source type Doubleword for Gen8 and * Gen9. So, lower 64 bit multiply instruction on rest of the platforms. */ if (devinfo->gen < 8 || devinfo->gen > 9) int64_options |= nir_lower_imul_2x32_64; /* We want the GLSL compiler to emit code that uses condition codes */ for (int i = 0; i < MESA_ALL_SHADER_STAGES; i++) { compiler->glsl_compiler_options[i].MaxUnrollIterations = 0; compiler->glsl_compiler_options[i].MaxIfDepth = devinfo->gen < 6 ? 16 : UINT_MAX; /* We handle this in NIR */ compiler->glsl_compiler_options[i].EmitNoIndirectInput = false; compiler->glsl_compiler_options[i].EmitNoIndirectOutput = false; compiler->glsl_compiler_options[i].EmitNoIndirectUniform = false; compiler->glsl_compiler_options[i].EmitNoIndirectTemp = false; bool is_scalar = compiler->scalar_stage[i]; compiler->glsl_compiler_options[i].OptimizeForAOS = !is_scalar; struct nir_shader_compiler_options *nir_options = rzalloc(compiler, struct nir_shader_compiler_options); if (is_scalar) { *nir_options = scalar_nir_options; } else { *nir_options = vector_nir_options; } /* Prior to Gen6, there are no three source operations, and Gen11 loses * LRP. */ nir_options->lower_ffma16 = devinfo->gen < 6; nir_options->lower_ffma32 = devinfo->gen < 6; nir_options->lower_ffma64 = devinfo->gen < 6; nir_options->lower_flrp32 = devinfo->gen < 6 || devinfo->gen >= 11; nir_options->lower_fpow = devinfo->gen >= 12; nir_options->lower_rotate = devinfo->gen < 11; nir_options->lower_bitfield_reverse = devinfo->gen < 7; nir_options->lower_int64_options = int64_options; nir_options->lower_doubles_options = fp64_options; /* Starting with Gen11, we lower away 8-bit arithmetic */ nir_options->support_8bit_alu = devinfo->gen < 11; nir_options->unify_interfaces = i < MESA_SHADER_FRAGMENT; compiler->glsl_compiler_options[i].NirOptions = nir_options; compiler->glsl_compiler_options[i].ClampBlockIndicesToArrayBounds = true; } return compiler; } static void insert_u64_bit(uint64_t *val, bool add) { *val = (*val << 1) | !!add; } uint64_t brw_get_compiler_config_value(const struct brw_compiler *compiler) { uint64_t config = 0; insert_u64_bit(&config, compiler->precise_trig); if (compiler->devinfo->gen >= 8 && compiler->devinfo->gen < 10) { insert_u64_bit(&config, compiler->scalar_stage[MESA_SHADER_VERTEX]); insert_u64_bit(&config, compiler->scalar_stage[MESA_SHADER_TESS_CTRL]); insert_u64_bit(&config, compiler->scalar_stage[MESA_SHADER_TESS_EVAL]); insert_u64_bit(&config, compiler->scalar_stage[MESA_SHADER_GEOMETRY]); } uint64_t debug_bits = INTEL_DEBUG; uint64_t mask = DEBUG_DISK_CACHE_MASK; while (mask != 0) { const uint64_t bit = 1ULL << (ffsll(mask) - 1); insert_u64_bit(&config, (debug_bits & bit) != 0); mask &= ~bit; } return config; } unsigned brw_prog_data_size(gl_shader_stage stage) { static const size_t stage_sizes[] = { [MESA_SHADER_VERTEX] = sizeof(struct brw_vs_prog_data), [MESA_SHADER_TESS_CTRL] = sizeof(struct brw_tcs_prog_data), [MESA_SHADER_TESS_EVAL] = sizeof(struct brw_tes_prog_data), [MESA_SHADER_GEOMETRY] = sizeof(struct brw_gs_prog_data), [MESA_SHADER_FRAGMENT] = sizeof(struct brw_wm_prog_data), [MESA_SHADER_COMPUTE] = sizeof(struct brw_cs_prog_data), [MESA_SHADER_KERNEL] = sizeof(struct brw_cs_prog_data), }; assert((int)stage >= 0 && stage < ARRAY_SIZE(stage_sizes)); return stage_sizes[stage]; } unsigned brw_prog_key_size(gl_shader_stage stage) { static const size_t stage_sizes[] = { [MESA_SHADER_VERTEX] = sizeof(struct brw_vs_prog_key), [MESA_SHADER_TESS_CTRL] = sizeof(struct brw_tcs_prog_key), [MESA_SHADER_TESS_EVAL] = sizeof(struct brw_tes_prog_key), [MESA_SHADER_GEOMETRY] = sizeof(struct brw_gs_prog_key), [MESA_SHADER_FRAGMENT] = sizeof(struct brw_wm_prog_key), [MESA_SHADER_COMPUTE] = sizeof(struct brw_cs_prog_key), [MESA_SHADER_KERNEL] = sizeof(struct brw_cs_prog_key), }; assert((int)stage >= 0 && stage < ARRAY_SIZE(stage_sizes)); return stage_sizes[stage]; } void brw_write_shader_relocs(const struct gen_device_info *devinfo, void *program, const struct brw_stage_prog_data *prog_data, struct brw_shader_reloc_value *values, unsigned num_values) { for (unsigned i = 0; i < prog_data->num_relocs; i++) { assert(prog_data->relocs[i].offset % 8 == 0); brw_inst *inst = (brw_inst *)(program + prog_data->relocs[i].offset); for (unsigned j = 0; j < num_values; j++) { if (prog_data->relocs[i].id == values[j].id) { brw_update_reloc_imm(devinfo, inst, values[j].value); break; } } } }