| #!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 SSA rewrite 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; |
| # }; |
| # |
| # vec4 func() |
| # { |
| # // Always true. |
| # if(one == 1) |
| # return vec4(1, 0, 0, 1); |
| # else |
| # return vec4(0); |
| # } |
| # |
| # void main() |
| # { |
| # _GLF_color = vec4(0); |
| # for(int i = 0; i <= one; i++) |
| # { |
| # switch(i) |
| # { |
| # case 1: |
| # _GLF_color = func(); |
| # case 0: |
| # default: |
| # _GLF_color.y = 0.0; |
| # break; |
| # } |
| # } |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 58 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %33 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "func(" |
| OpName %12 "buf0" |
| OpMemberName %12 0 "one" |
| OpName %14 "" |
| OpName %33 "_GLF_color" |
| OpName %35 "i" |
| OpMemberDecorate %12 0 Offset 0 |
| OpDecorate %12 Block |
| OpDecorate %14 DescriptorSet 0 |
| OpDecorate %14 Binding 0 |
| OpDecorate %33 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 4 |
| %8 = OpTypeFunction %7 |
| %11 = OpTypeInt 32 1 |
| %12 = OpTypeStruct %11 |
| %13 = OpTypePointer Uniform %12 |
| %14 = OpVariable %13 Uniform |
| %15 = OpConstant %11 0 |
| %16 = OpTypePointer Uniform %11 |
| %19 = OpConstant %11 1 |
| %20 = OpTypeBool |
| %24 = OpConstant %6 1 |
| %25 = OpConstant %6 0 |
| %26 = OpConstantComposite %7 %24 %25 %25 %24 |
| %29 = OpConstantComposite %7 %25 %25 %25 %25 |
| %32 = OpTypePointer Output %7 |
| %33 = OpVariable %32 Output |
| %34 = OpTypePointer Function %11 |
| %50 = OpTypeInt 32 0 |
| %51 = OpConstant %50 1 |
| %52 = OpTypePointer Output %6 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %35 = OpVariable %34 Function |
| OpStore %33 %29 |
| OpStore %35 %15 |
| OpBranch %36 |
| %36 = OpLabel |
| OpLoopMerge %38 %39 None |
| OpBranch %40 |
| %40 = OpLabel |
| %41 = OpLoad %11 %35 |
| %42 = OpAccessChain %16 %14 %15 |
| %43 = OpLoad %11 %42 |
| %44 = OpSLessThanEqual %20 %41 %43 |
| OpBranchConditional %44 %37 %38 |
| %37 = OpLabel |
| %45 = OpLoad %11 %35 |
| OpSelectionMerge %48 None |
| OpSwitch %45 %47 1 %46 0 %47 |
| %47 = OpLabel |
| %53 = OpAccessChain %52 %33 %51 |
| OpStore %53 %25 |
| OpBranch %48 |
| %46 = OpLabel |
| %49 = OpFunctionCall %7 %9 |
| OpStore %33 %49 |
| OpBranch %47 |
| %48 = OpLabel |
| OpBranch %39 |
| %39 = OpLabel |
| %56 = OpLoad %11 %35 |
| %57 = OpIAdd %11 %56 %19 |
| OpStore %35 %57 |
| OpBranch %36 |
| %38 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %9 = OpFunction %7 None %8 |
| %10 = OpLabel |
| %17 = OpAccessChain %16 %14 %15 |
| %18 = OpLoad %11 %17 |
| %21 = OpIEqual %20 %18 %19 |
| OpSelectionMerge %23 None |
| OpBranchConditional %21 %22 %28 |
| %22 = OpLabel |
| OpReturnValue %26 |
| %28 = OpLabel |
| OpReturnValue %29 |
| %23 = OpLabel |
| OpUnreachable |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # one |
| BUFFER variant_one DATA_TYPE int32 DATA |
| 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_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 |