| #!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; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # float one; |
| # }; |
| # |
| # void main() |
| # { |
| # // This selects the second vector because one == 1. |
| # vec3 v = mix(vec3(5, 8, -12.2), vec3(1, 4.9, -2.1), one); |
| # |
| # float d = distance(v, vec3(1, 4.9, -2.1)); |
| # |
| # if (d < 0.1) |
| # _GLF_color = vec4(v.x, 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: 49 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %40 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "v" |
| OpName %18 "buf0" |
| OpMemberName %18 0 "one" |
| OpName %20 "" |
| OpName %29 "d" |
| OpName %40 "_GLF_color" |
| OpMemberDecorate %18 0 Offset 0 |
| OpDecorate %18 Block |
| OpDecorate %20 DescriptorSet 0 |
| OpDecorate %20 Binding 0 |
| OpDecorate %40 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 3 |
| %8 = OpTypePointer Function %7 |
| %10 = OpConstant %6 5 |
| %11 = OpConstant %6 8 |
| %12 = OpConstant %6 -12.1999998 |
| %13 = OpConstantComposite %7 %10 %11 %12 |
| %14 = OpConstant %6 1 |
| %15 = OpConstant %6 4.9000001 |
| %16 = OpConstant %6 -2.0999999 |
| %17 = OpConstantComposite %7 %14 %15 %16 |
| %18 = OpTypeStruct %6 |
| %19 = OpTypePointer Uniform %18 |
| %20 = OpVariable %19 Uniform |
| %21 = OpTypeInt 32 1 |
| %22 = OpConstant %21 0 |
| %23 = OpTypePointer Uniform %6 |
| %28 = OpTypePointer Function %6 |
| %33 = OpConstant %6 0.100000001 |
| %34 = OpTypeBool |
| %38 = OpTypeVector %6 4 |
| %39 = OpTypePointer Output %38 |
| %40 = OpVariable %39 Output |
| %41 = OpTypeInt 32 0 |
| %42 = OpConstant %41 0 |
| %45 = OpConstant %6 0 |
| %48 = OpConstantComposite %38 %45 %45 %45 %45 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %9 = OpVariable %8 Function |
| %29 = OpVariable %28 Function |
| %24 = OpAccessChain %23 %20 %22 |
| %25 = OpLoad %6 %24 |
| %26 = OpCompositeConstruct %7 %25 %25 %25 |
| %27 = OpExtInst %7 %1 FMix %13 %17 %26 |
| OpStore %9 %27 |
| %30 = OpLoad %7 %9 |
| %31 = OpExtInst %6 %1 Distance %30 %17 |
| OpStore %29 %31 |
| %32 = OpLoad %6 %29 |
| %35 = OpFOrdLessThan %34 %32 %33 |
| OpSelectionMerge %37 None |
| OpBranchConditional %35 %36 %47 |
| %36 = OpLabel |
| %43 = OpAccessChain %28 %9 %42 |
| %44 = OpLoad %6 %43 |
| %46 = OpCompositeConstruct %38 %44 %45 %45 %14 |
| OpStore %40 %46 |
| OpBranch %37 |
| %47 = OpLabel |
| OpStore %40 %48 |
| OpBranch %37 |
| %37 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # one |
| BUFFER variant_one DATA_TYPE float DATA |
| 1.0 |
| 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_one 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 |