| #!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 vector DCE 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 |
| # { |
| # int zero; |
| # }; |
| # |
| # void main() |
| # { |
| # vec2 a = vec2(1); |
| # |
| # if (zero == 1) // Always false. |
| # a.x += 1.0; |
| # |
| # vec2 b = a.y + vec2(2, 3); |
| # |
| # if (b == vec2(3, 4)) // Always true. |
| # _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: 56 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %51 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "a" |
| OpName %13 "buf0" |
| OpMemberName %13 0 "zero" |
| OpName %15 "" |
| OpName %32 "b" |
| OpName %51 "_GLF_color" |
| OpMemberDecorate %13 0 Offset 0 |
| OpDecorate %13 Block |
| OpDecorate %15 DescriptorSet 0 |
| OpDecorate %15 Binding 0 |
| OpDecorate %51 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 2 |
| %8 = OpTypePointer Function %7 |
| %10 = OpConstant %6 1 |
| %11 = OpConstantComposite %7 %10 %10 |
| %12 = OpTypeInt 32 1 |
| %13 = OpTypeStruct %12 |
| %14 = OpTypePointer Uniform %13 |
| %15 = OpVariable %14 Uniform |
| %16 = OpConstant %12 0 |
| %17 = OpTypePointer Uniform %12 |
| %20 = OpConstant %12 1 |
| %21 = OpTypeBool |
| %25 = OpTypeInt 32 0 |
| %26 = OpConstant %25 0 |
| %27 = OpTypePointer Function %6 |
| %33 = OpConstant %25 1 |
| %36 = OpConstant %6 2 |
| %37 = OpConstant %6 3 |
| %38 = OpConstantComposite %7 %36 %37 |
| %42 = OpConstant %6 4 |
| %43 = OpConstantComposite %7 %37 %42 |
| %44 = OpTypeVector %21 2 |
| %49 = OpTypeVector %6 4 |
| %50 = OpTypePointer Output %49 |
| %51 = OpVariable %50 Output |
| %52 = OpConstant %6 0 |
| %53 = OpConstantComposite %49 %10 %52 %52 %10 |
| %55 = OpConstantComposite %49 %52 %52 %52 %52 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %9 = OpVariable %8 Function |
| %32 = OpVariable %8 Function |
| OpStore %9 %11 |
| %18 = OpAccessChain %17 %15 %16 |
| %19 = OpLoad %12 %18 |
| %22 = OpIEqual %21 %19 %20 |
| OpSelectionMerge %24 None |
| OpBranchConditional %22 %23 %24 |
| %23 = OpLabel |
| %28 = OpAccessChain %27 %9 %26 |
| %29 = OpLoad %6 %28 |
| %30 = OpFAdd %6 %29 %10 |
| %31 = OpAccessChain %27 %9 %26 |
| OpStore %31 %30 |
| OpBranch %24 |
| %24 = OpLabel |
| %34 = OpAccessChain %27 %9 %33 |
| %35 = OpLoad %6 %34 |
| %39 = OpCompositeConstruct %7 %35 %35 |
| %40 = OpFAdd %7 %39 %38 |
| OpStore %32 %40 |
| %41 = OpLoad %7 %32 |
| %45 = OpFOrdEqual %44 %41 %43 |
| %46 = OpAll %21 %45 |
| OpSelectionMerge %48 None |
| OpBranchConditional %46 %47 %54 |
| %47 = OpLabel |
| OpStore %51 %53 |
| OpBranch %48 |
| %54 = OpLabel |
| OpStore %51 %55 |
| OpBranch %48 |
| %48 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # zero |
| BUFFER variant_zero DATA_TYPE int32 DATA |
| 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_zero 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 |