| #!amber |
| |
| # Copyright 2019 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 bug found by GraphicsFuzz. |
| |
| # Short description: A fragment shader with an always false while function |
| |
| # The test passes because the shader always writes the color red (while function in the shader is always false) |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--redundancy-elimination' |
| # '--reduce-load-size' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--vector-dce' |
| # '--eliminate-dead-branches' |
| # spirv-opt commit hash: 230c9e437146e48ec58adb4433890403c23c98fa |
| |
| |
| |
| 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 { |
| # vec2 injectionSwitch; |
| # }; |
| # void main() |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # do |
| # { |
| # for( |
| # int j = int(injectionSwitch.x); |
| # j < 2; |
| # ++j |
| # ) |
| # { |
| # return; |
| # } |
| # } |
| # while(0.0 > injectionSwitch.y); |
| # int(injectionSwitch.y); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 52 |
| ; 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 %19 "j" |
| OpName %21 "buf0" |
| OpMemberName %21 0 "injectionSwitch" |
| OpName %23 "" |
| OpDecorate %9 Location 0 |
| OpDecorate %19 RelaxedPrecision |
| OpMemberDecorate %21 0 Offset 0 |
| OpDecorate %21 Block |
| OpDecorate %23 DescriptorSet 0 |
| OpDecorate %23 Binding 0 |
| OpDecorate %30 RelaxedPrecision |
| OpDecorate %36 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 4 |
| %8 = OpTypePointer Output %7 |
| %9 = OpVariable %8 Output |
| %10 = OpConstant %6 1 |
| %11 = OpConstant %6 0 |
| %12 = OpConstantComposite %7 %10 %11 %11 %10 |
| %17 = OpTypeInt 32 1 |
| %18 = OpTypePointer Function %17 |
| %20 = OpTypeVector %6 2 |
| %21 = OpTypeStruct %20 |
| %22 = OpTypePointer Uniform %21 |
| %23 = OpVariable %22 Uniform |
| %24 = OpConstant %17 0 |
| %25 = OpTypeInt 32 0 |
| %26 = OpConstant %25 0 |
| %27 = OpTypePointer Uniform %6 |
| %37 = OpConstant %17 2 |
| %38 = OpTypeBool |
| %42 = OpConstant %17 1 |
| %44 = OpConstant %25 1 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %19 = OpVariable %18 Function |
| OpStore %9 %12 |
| OpBranch %13 |
| %13 = OpLabel |
| %28 = OpAccessChain %27 %23 %24 %26 |
| %29 = OpLoad %6 %28 |
| %30 = OpConvertFToS %17 %29 |
| OpStore %19 %30 |
| OpLoopMerge %15 %33 None |
| OpBranch %31 |
| %31 = OpLabel |
| %36 = OpLoad %17 %19 |
| %39 = OpSLessThan %38 %36 %37 |
| OpLoopMerge %51 %34 None |
| OpBranchConditional %39 %32 %51 |
| %32 = OpLabel |
| OpReturn |
| %34 = OpLabel |
| OpBranch %31 |
| %51 = OpLabel |
| OpBranch %33 |
| %33 = OpLabel |
| %45 = OpAccessChain %27 %23 %24 %44 |
| %46 = OpLoad %6 %45 |
| %47 = OpFOrdGreaterThan %38 %11 %46 |
| OpBranchConditional %47 %13 %15 |
| %15 = OpLabel |
| %50 = OpConvertFToS %17 %46 |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # injectionSwitch |
| BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA |
| 0.0 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_injectionSwitch 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 |