| #!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 code simplification 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 one; |
| # }; |
| # layout(set = 0, binding = 1) uniform buf1 |
| # { |
| # int zero; |
| # }; |
| # |
| # void main() |
| # { |
| # _GLF_color = vec4(0); |
| # |
| # for(int i = 0; i < one; i++) |
| # { |
| # do |
| # { |
| # // Always true. |
| # if(one == 1) |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # } |
| # while(false); |
| # } |
| # |
| # vec4 v; |
| # v.y = float(zero); |
| # _GLF_color.y = v.y; |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 61 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %9 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "_GLF_color" |
| OpName %14 "i" |
| OpName %22 "buf0" |
| OpMemberName %22 0 "one" |
| OpName %24 "" |
| OpName %46 "v" |
| OpName %47 "buf1" |
| OpMemberName %47 0 "zero" |
| OpName %49 "" |
| OpDecorate %9 Location 0 |
| OpMemberDecorate %22 0 Offset 0 |
| OpDecorate %22 Block |
| OpDecorate %24 DescriptorSet 0 |
| OpDecorate %24 Binding 0 |
| OpMemberDecorate %47 0 Offset 0 |
| OpDecorate %47 Block |
| OpDecorate %49 DescriptorSet 0 |
| OpDecorate %49 Binding 1 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 4 |
| %8 = OpTypePointer Output %7 |
| %9 = OpVariable %8 Output |
| %10 = OpConstant %6 0 |
| %11 = OpConstantComposite %7 %10 %10 %10 %10 |
| %12 = OpTypeInt 32 1 |
| %13 = OpTypePointer Function %12 |
| %15 = OpConstant %12 0 |
| %22 = OpTypeStruct %12 |
| %23 = OpTypePointer Uniform %22 |
| %24 = OpVariable %23 Uniform |
| %25 = OpTypePointer Uniform %12 |
| %28 = OpTypeBool |
| %36 = OpConstant %12 1 |
| %40 = OpConstant %6 1 |
| %41 = OpConstantComposite %7 %40 %10 %10 %40 |
| %42 = OpConstantFalse %28 |
| %45 = OpTypePointer Function %7 |
| %47 = OpTypeStruct %12 |
| %48 = OpTypePointer Uniform %47 |
| %49 = OpVariable %48 Uniform |
| %53 = OpTypeInt 32 0 |
| %54 = OpConstant %53 1 |
| %55 = OpTypePointer Function %6 |
| %59 = OpTypePointer Output %6 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %14 = OpVariable %13 Function |
| %46 = OpVariable %45 Function |
| OpStore %9 %11 |
| OpStore %14 %15 |
| OpBranch %16 |
| %16 = OpLabel |
| OpLoopMerge %18 %19 None |
| OpBranch %20 |
| %20 = OpLabel |
| %21 = OpLoad %12 %14 |
| %26 = OpAccessChain %25 %24 %15 |
| %27 = OpLoad %12 %26 |
| %29 = OpSLessThan %28 %21 %27 |
| OpBranchConditional %29 %17 %18 |
| %17 = OpLabel |
| OpBranch %30 |
| %30 = OpLabel |
| OpLoopMerge %32 %33 None |
| OpBranch %31 |
| %31 = OpLabel |
| %34 = OpAccessChain %25 %24 %15 |
| %35 = OpLoad %12 %34 |
| %37 = OpIEqual %28 %35 %36 |
| OpSelectionMerge %39 None |
| OpBranchConditional %37 %38 %39 |
| %38 = OpLabel |
| OpStore %9 %41 |
| OpBranch %39 |
| %39 = OpLabel |
| OpBranch %33 |
| %33 = OpLabel |
| OpBranchConditional %42 %30 %32 |
| %32 = OpLabel |
| OpBranch %19 |
| %19 = OpLabel |
| %43 = OpLoad %12 %14 |
| %44 = OpIAdd %12 %43 %36 |
| OpStore %14 %44 |
| OpBranch %16 |
| %18 = OpLabel |
| %50 = OpAccessChain %25 %49 %15 |
| %51 = OpLoad %12 %50 |
| %52 = OpConvertSToF %6 %51 |
| %56 = OpAccessChain %55 %46 %54 |
| OpStore %56 %52 |
| %57 = OpAccessChain %55 %46 %54 |
| %58 = OpLoad %6 %57 |
| %60 = OpAccessChain %59 %9 %54 |
| OpStore %60 %58 |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # one |
| BUFFER variant_one DATA_TYPE int32 DATA |
| 1 |
| END |
| # 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_one AS uniform DESCRIPTOR_SET 0 BINDING 0 |
| BIND BUFFER variant_zero AS uniform DESCRIPTOR_SET 0 BINDING 1 |
| 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 |