| /* |
| * 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, |
| .max_unroll_iterations = 32, |
| }; |
| |
| 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, |
| .max_unroll_iterations = 32, |
| }; |
| |
| 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, |
| .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->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 = 0; |
| compiler->glsl_compiler_options[i].MaxIfDepth = |
| devinfo->gen < 6 ? 16 : UINT_MAX; |
| |
| compiler->glsl_compiler_options[i].EmitNoMainReturn = true; |
| compiler->glsl_compiler_options[i].EmitNoIndirectInput = true; |
| compiler->glsl_compiler_options[i].EmitNoIndirectUniform = false; |
| |
| 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; |
| |
| 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; |
| |
| return compiler; |
| } |