| #!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 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 |
| # { |
| # int one; |
| # }; |
| # |
| # int func() |
| # { |
| # int ret = 0; |
| # |
| # for(int i = 3; i > (i & 1); i -= one) |
| # ret++; |
| # |
| # return ret; |
| # } |
| # |
| # void main() |
| # { |
| # if (func() == 2) |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # else |
| # _GLF_color = vec4(0); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 53 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %47 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "func(" |
| OpName %11 "ret" |
| OpName %13 "i" |
| OpName %28 "buf0" |
| OpMemberName %28 0 "one" |
| OpName %30 "" |
| OpName %47 "_GLF_color" |
| OpMemberDecorate %28 0 Offset 0 |
| OpDecorate %28 Block |
| OpDecorate %30 DescriptorSet 0 |
| OpDecorate %30 Binding 0 |
| OpDecorate %47 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeFunction %6 |
| %10 = OpTypePointer Function %6 |
| %12 = OpConstant %6 0 |
| %14 = OpConstant %6 3 |
| %22 = OpConstant %6 1 |
| %24 = OpTypeBool |
| %28 = OpTypeStruct %6 |
| %29 = OpTypePointer Uniform %28 |
| %30 = OpVariable %29 Uniform |
| %31 = OpTypePointer Uniform %6 |
| %40 = OpConstant %6 2 |
| %44 = OpTypeFloat 32 |
| %45 = OpTypeVector %44 4 |
| %46 = OpTypePointer Output %45 |
| %47 = OpVariable %46 Output |
| %48 = OpConstant %44 1 |
| %49 = OpConstant %44 0 |
| %50 = OpConstantComposite %45 %48 %49 %49 %48 |
| %52 = OpConstantComposite %45 %49 %49 %49 %49 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %39 = OpFunctionCall %6 %8 |
| %41 = OpIEqual %24 %39 %40 |
| OpSelectionMerge %43 None |
| OpBranchConditional %41 %42 %51 |
| %42 = OpLabel |
| OpStore %47 %50 |
| OpBranch %43 |
| %51 = OpLabel |
| OpStore %47 %52 |
| OpBranch %43 |
| %43 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| %11 = OpVariable %10 Function |
| %13 = OpVariable %10 Function |
| OpStore %11 %12 |
| OpStore %13 %14 |
| OpBranch %15 |
| %15 = OpLabel |
| OpLoopMerge %17 %18 None |
| OpBranch %19 |
| %19 = OpLabel |
| %20 = OpLoad %6 %13 |
| %21 = OpLoad %6 %13 |
| %23 = OpBitwiseAnd %6 %21 %22 |
| %25 = OpSGreaterThan %24 %20 %23 |
| OpBranchConditional %25 %16 %17 |
| %16 = OpLabel |
| %26 = OpLoad %6 %11 |
| %27 = OpIAdd %6 %26 %22 |
| OpStore %11 %27 |
| OpBranch %18 |
| %18 = OpLabel |
| %32 = OpAccessChain %31 %30 %12 |
| %33 = OpLoad %6 %32 |
| %34 = OpLoad %6 %13 |
| %35 = OpISub %6 %34 %33 |
| OpStore %13 %35 |
| OpBranch %15 |
| %17 = OpLabel |
| %36 = OpLoad %6 %11 |
| OpReturnValue %36 |
| 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 |