| #!amber |
| |
| # Copyright 2021 Google LLC |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| |
| |
| # A test for a coverage-gap found by the GraphicsFuzz project. |
| |
| # Short description: A fragment shader that covers specific BRW code paths |
| |
| # The test passes because the shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '-O' |
| # spirv-opt commit hash: a0370efd589be33d5d9a85cfde2f85841b3755af |
| |
| |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 320 es |
| # #define _int_0 _GLF_uniform_int_values[0] |
| # #define _int_1 _GLF_uniform_int_values[1] |
| # |
| # precision highp float; |
| # precision highp int; |
| # |
| # // Contents of _GLF_uniform_int_values: [0, 1] |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # int _GLF_uniform_int_values[2]; |
| # }; |
| # |
| # const int _GLF_global_loop_bound = 100; |
| # int _GLF_global_loop_count = 0; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # void main() |
| # { |
| # int a = 1; |
| # |
| # while (_GLF_global_loop_count < _GLF_global_loop_bound - _int_1) |
| # { |
| # _GLF_global_loop_count++; |
| # } |
| # |
| # // Always true. |
| # if (_int_0 == 0) |
| # { |
| # // Iterated once. |
| # while (_GLF_global_loop_count < _GLF_global_loop_bound) |
| # { |
| # _GLF_global_loop_count++; |
| # // a becomes 0. |
| # a *= 1 - a; |
| # } |
| # } |
| # |
| # // Always true. |
| # if (a == _int_0) |
| # { |
| # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); |
| # } |
| # else |
| # { |
| # _GLF_color = vec4(_int_0); |
| # } |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 10 |
| ; Bound: 85 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %61 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 320 |
| OpName %4 "main" |
| OpName %23 "buf0" |
| OpMemberName %23 0 "_GLF_uniform_int_values" |
| OpName %25 "" |
| OpName %61 "_GLF_color" |
| OpDecorate %22 ArrayStride 16 |
| OpMemberDecorate %23 0 Offset 0 |
| OpDecorate %23 Block |
| OpDecorate %25 DescriptorSet 0 |
| OpDecorate %25 Binding 0 |
| OpDecorate %61 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %9 = OpConstant %6 0 |
| %12 = OpConstant %6 1 |
| %19 = OpConstant %6 100 |
| %20 = OpTypeInt 32 0 |
| %21 = OpConstant %20 2 |
| %22 = OpTypeArray %6 %21 |
| %23 = OpTypeStruct %22 |
| %24 = OpTypePointer Uniform %23 |
| %25 = OpVariable %24 Uniform |
| %26 = OpTypePointer Uniform %6 |
| %30 = OpTypeBool |
| %58 = OpTypeFloat 32 |
| %59 = OpTypeVector %58 4 |
| %60 = OpTypePointer Output %59 |
| %61 = OpVariable %60 Output |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| OpBranch %13 |
| %13 = OpLabel |
| %80 = OpPhi %6 %9 %5 %33 %14 |
| %27 = OpAccessChain %26 %25 %9 %12 |
| %28 = OpLoad %6 %27 |
| %29 = OpISub %6 %19 %28 |
| %31 = OpSLessThan %30 %80 %29 |
| OpLoopMerge %15 %14 None |
| OpBranchConditional %31 %14 %15 |
| %14 = OpLabel |
| %33 = OpIAdd %6 %80 %12 |
| OpBranch %13 |
| %15 = OpLabel |
| %34 = OpAccessChain %26 %25 %9 %9 |
| %35 = OpLoad %6 %34 |
| %36 = OpIEqual %30 %35 %9 |
| OpSelectionMerge %38 None |
| OpBranchConditional %36 %37 %38 |
| %37 = OpLabel |
| OpBranch %39 |
| %39 = OpLabel |
| %84 = OpPhi %6 %12 %37 %51 %40 |
| %81 = OpPhi %6 %80 %37 %47 %40 |
| %45 = OpSLessThan %30 %81 %19 |
| OpLoopMerge %41 %40 None |
| OpBranchConditional %45 %40 %41 |
| %40 = OpLabel |
| %47 = OpIAdd %6 %81 %12 |
| %49 = OpISub %6 %12 %84 |
| %51 = OpIMul %6 %84 %49 |
| OpBranch %39 |
| %41 = OpLabel |
| OpBranch %38 |
| %38 = OpLabel |
| %82 = OpPhi %6 %12 %15 %84 %41 |
| %55 = OpIEqual %30 %82 %35 |
| OpSelectionMerge %57 None |
| OpBranchConditional %55 %56 %75 |
| %56 = OpLabel |
| %64 = OpConvertSToF %58 %28 |
| %67 = OpConvertSToF %58 %35 |
| %74 = OpCompositeConstruct %59 %64 %67 %67 %64 |
| OpStore %61 %74 |
| OpBranch %57 |
| %75 = OpLabel |
| %78 = OpConvertSToF %58 %35 |
| %79 = OpCompositeConstruct %59 %78 %78 %78 %78 |
| OpStore %61 %79 |
| OpBranch %57 |
| %57 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # _GLF_uniform_int_values |
| BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA |
| 0 1 |
| END |
| |
| BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM |
| |
| PIPELINE graphics variant_pipeline |
| ATTACH variant_vertex_shader |
| ATTACH variant_fragment_shader |
| FRAMEBUFFER_SIZE 256 256 |
| BIND BUFFER variant_framebuffer AS color LOCATION 0 |
| BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0 |
| END |
| CLEAR_COLOR variant_pipeline 0 0 0 255 |
| |
| CLEAR variant_pipeline |
| RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256 |
| |
| EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255 |