| #!amber |
| |
| # Copyright 2020 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 GraphicsFuzz. |
| |
| # Short description: A fragment shader that covers a specific instruction folding path. |
| |
| # The test passes because shader always writes red. |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 310 es |
| # precision highp float; |
| # |
| # precision highp int; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # vec2 twoandthree; // (2.0, 3.0) |
| # }; |
| # |
| # void main() |
| # { |
| # vec2 a = twoandthree; |
| # vec2 b = vec2(a.x, clamp(a, vec2(1), vec2(1)).y); |
| # |
| # // Always true |
| # if (b.x == 2.0 && b.y == 1.0) |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # else |
| # _GLF_color = vec4(0); |
| # |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 51 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %46 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "a" |
| OpName %10 "buf0" |
| OpMemberName %10 0 "twoandthree" |
| OpName %12 "" |
| OpName %18 "b" |
| OpName %46 "_GLF_color" |
| OpMemberDecorate %10 0 Offset 0 |
| OpDecorate %10 Block |
| OpDecorate %12 DescriptorSet 0 |
| OpDecorate %12 Binding 0 |
| OpDecorate %46 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 2 |
| %8 = OpTypePointer Function %7 |
| %10 = OpTypeStruct %7 |
| %11 = OpTypePointer Uniform %10 |
| %12 = OpVariable %11 Uniform |
| %13 = OpTypeInt 32 1 |
| %14 = OpConstant %13 0 |
| %15 = OpTypePointer Uniform %7 |
| %19 = OpTypeInt 32 0 |
| %20 = OpConstant %19 0 |
| %21 = OpTypePointer Function %6 |
| %25 = OpConstant %6 1 |
| %26 = OpConstantComposite %7 %25 %25 |
| %28 = OpConstant %19 1 |
| %31 = OpTypeBool |
| %34 = OpConstant %6 2 |
| %44 = OpTypeVector %6 4 |
| %45 = OpTypePointer Output %44 |
| %46 = OpVariable %45 Output |
| %47 = OpConstant %6 0 |
| %48 = OpConstantComposite %44 %25 %47 %47 %25 |
| %50 = OpConstantComposite %44 %47 %47 %47 %47 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %9 = OpVariable %8 Function |
| %18 = OpVariable %8 Function |
| %16 = OpAccessChain %15 %12 %14 |
| %17 = OpLoad %7 %16 |
| OpStore %9 %17 |
| %22 = OpAccessChain %21 %9 %20 |
| %23 = OpLoad %6 %22 |
| %24 = OpLoad %7 %9 |
| %27 = OpExtInst %7 %1 FClamp %24 %26 %26 |
| %29 = OpCompositeExtract %6 %27 1 |
| %30 = OpCompositeConstruct %7 %23 %29 |
| OpStore %18 %30 |
| %32 = OpAccessChain %21 %18 %20 |
| %33 = OpLoad %6 %32 |
| %35 = OpFOrdEqual %31 %33 %34 |
| OpSelectionMerge %37 None |
| OpBranchConditional %35 %36 %37 |
| %36 = OpLabel |
| %38 = OpAccessChain %21 %18 %28 |
| %39 = OpLoad %6 %38 |
| %40 = OpFOrdEqual %31 %39 %25 |
| OpBranch %37 |
| %37 = OpLabel |
| %41 = OpPhi %31 %35 %5 %40 %36 |
| OpSelectionMerge %43 None |
| OpBranchConditional %41 %42 %49 |
| %42 = OpLabel |
| OpStore %46 %48 |
| OpBranch %43 |
| %49 = OpLabel |
| OpStore %46 %50 |
| OpBranch %43 |
| %43 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # twoandthree |
| BUFFER variant_twoandthree DATA_TYPE vec2<float> DATA |
| 2.0 3.0 |
| 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_twoandthree 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 |