/* * 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_context.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_fmod32 = true, \ .lower_fmod64 = false, \ .lower_bitfield_extract = true, \ .lower_bitfield_insert = true, \ .lower_uadd_carry = true, \ .lower_usub_borrow = true, \ .lower_fdiv = true, \ .lower_flrp64 = true, \ .native_integers = true, \ .use_interpolated_input_intrinsics = true, \ .vertex_id_zero_based = true static const struct nir_shader_compiler_options scalar_nir_options = { COMMON_OPTIONS, .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, }; 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, /* Prior to Gen6, there are no three source operations for SIMD4x2. */ .lower_flrp32 = 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, }; static const struct nir_shader_compiler_options vector_nir_options_gen6 = { 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, }; 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->scalar_stage[MESA_SHADER_VERTEX] = devinfo->gen >= 8 && !(INTEL_DEBUG & DEBUG_VEC4VS); compiler->scalar_stage[MESA_SHADER_TESS_CTRL] = devinfo->gen >= 8 && env_var_as_boolean("INTEL_SCALAR_TCS", true); compiler->scalar_stage[MESA_SHADER_TESS_EVAL] = devinfo->gen >= 8 && env_var_as_boolean("INTEL_SCALAR_TES", true); compiler->scalar_stage[MESA_SHADER_GEOMETRY] = devinfo->gen >= 8 && env_var_as_boolean("INTEL_SCALAR_GS", true); compiler->scalar_stage[MESA_SHADER_FRAGMENT] = true; compiler->scalar_stage[MESA_SHADER_COMPUTE] = true; /* We want the GLSL compiler to emit code that uses condition codes */ for (int i = 0; i < MESA_SHADER_STAGES; i++) { compiler->glsl_compiler_options[i].MaxUnrollIterations = 32; compiler->glsl_compiler_options[i].MaxIfDepth = devinfo->gen < 6 ? 16 : UINT_MAX; compiler->glsl_compiler_options[i].EmitNoNoise = true; compiler->glsl_compiler_options[i].EmitNoMainReturn = true; compiler->glsl_compiler_options[i].EmitNoIndirectInput = true; compiler->glsl_compiler_options[i].EmitNoIndirectUniform = false; compiler->glsl_compiler_options[i].LowerCombinedClipCullDistance = true; bool is_scalar = compiler->scalar_stage[i]; compiler->glsl_compiler_options[i].EmitNoIndirectOutput = is_scalar; compiler->glsl_compiler_options[i].EmitNoIndirectTemp = is_scalar; compiler->glsl_compiler_options[i].OptimizeForAOS = !is_scalar; /* !ARB_gpu_shader5 */ if (devinfo->gen < 7) compiler->glsl_compiler_options[i].EmitNoIndirectSampler = true; if (is_scalar) { compiler->glsl_compiler_options[i].NirOptions = &scalar_nir_options; } else { compiler->glsl_compiler_options[i].NirOptions = devinfo->gen < 6 ? &vector_nir_options : &vector_nir_options_gen6; } compiler->glsl_compiler_options[i].LowerBufferInterfaceBlocks = true; compiler->glsl_compiler_options[i].ClampBlockIndicesToArrayBounds = true; } compiler->glsl_compiler_options[MESA_SHADER_TESS_CTRL].EmitNoIndirectInput = false; compiler->glsl_compiler_options[MESA_SHADER_TESS_EVAL].EmitNoIndirectInput = false; compiler->glsl_compiler_options[MESA_SHADER_TESS_CTRL].EmitNoIndirectOutput = false; if (compiler->scalar_stage[MESA_SHADER_GEOMETRY]) compiler->glsl_compiler_options[MESA_SHADER_GEOMETRY].EmitNoIndirectInput = false; compiler->glsl_compiler_options[MESA_SHADER_COMPUTE] .LowerShaderSharedVariables = true; return compiler; }