| #!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 uv value comparison as boolean |
| |
| # The test passes because the shader always writes the color red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--scalar-replacement=100' |
| # '--vector-dce' |
| # '--redundancy-elimination' |
| # '--ccp' |
| # '--redundancy-elimination' |
| # '--copy-propagate-arrays' |
| # '--eliminate-dead-code-aggressive' |
| # '--redundancy-elimination' |
| # '--vector-dce' |
| # '--inline-entry-points-exhaustive' |
| # '--private-to-local' |
| # '--if-conversion' |
| # '--if-conversion' |
| # '--eliminate-dead-code-aggressive' |
| # '--if-conversion' |
| # '--simplify-instructions' |
| # '--eliminate-local-multi-store' |
| # spirv-opt commit hash: ad7f2c5c4c7f51360e9e079109a9217aa5ba5cc0 |
| |
| |
| |
| 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; |
| # |
| # void main() |
| # { |
| # vec2 uv; |
| # bool c1 = uv.y < 0.25; |
| # |
| # for (int i = 0; i < 1; i++) |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); // Writes the color red |
| # return; |
| # } |
| # if (c1) |
| # { |
| # return; |
| # } |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 49 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %34 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "c1" |
| OpName %12 "uv" |
| OpName %22 "i" |
| OpName %34 "_GLF_color" |
| OpDecorate %22 RelaxedPrecision |
| OpDecorate %34 Location 0 |
| OpDecorate %39 RelaxedPrecision |
| OpDecorate %40 RelaxedPrecision |
| OpDecorate %45 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeBool |
| %7 = OpTypePointer Function %6 |
| %9 = OpTypeFloat 32 |
| %10 = OpTypeVector %9 2 |
| %11 = OpTypePointer Function %10 |
| %13 = OpTypeInt 32 0 |
| %14 = OpConstant %13 1 |
| %15 = OpTypePointer Function %9 |
| %18 = OpConstant %9 0.25 |
| %20 = OpTypeInt 32 1 |
| %21 = OpTypePointer Function %20 |
| %23 = OpConstant %20 0 |
| %30 = OpConstant %20 1 |
| %32 = OpTypeVector %9 4 |
| %33 = OpTypePointer Output %32 |
| %34 = OpVariable %33 Output |
| %35 = OpConstant %9 1 |
| %36 = OpConstant %9 0 |
| %37 = OpConstantComposite %32 %35 %36 %36 %35 |
| %47 = OpUndef %20 |
| %48 = OpUndef %6 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %8 = OpVariable %7 Function |
| %12 = OpVariable %11 Function |
| %22 = OpVariable %21 Function |
| %16 = OpAccessChain %15 %12 %14 |
| %17 = OpLoad %9 %16 |
| %19 = OpFOrdLessThan %6 %17 %18 |
| OpStore %8 %19 |
| OpStore %22 %23 |
| OpBranch %24 |
| %24 = OpLabel |
| %46 = OpPhi %6 %19 %5 %48 %27 |
| %45 = OpPhi %20 %23 %5 %47 %27 |
| OpLoopMerge %26 %27 None |
| OpBranch %28 |
| %28 = OpLabel |
| %31 = OpSLessThan %6 %45 %30 |
| OpBranchConditional %31 %25 %26 |
| %25 = OpLabel |
| OpStore %34 %37 |
| OpReturn |
| %27 = OpLabel |
| %39 = OpLoad %20 %22 |
| %40 = OpIAdd %20 %39 %30 |
| OpStore %22 %40 |
| OpBranch %24 |
| %26 = OpLabel |
| OpSelectionMerge %43 None |
| OpBranchConditional %46 %42 %43 |
| %42 = OpLabel |
| OpReturn |
| %43 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| |
| 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 |
| 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 |