| #!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 coverage-gap found by GraphicsFuzz. |
| |
| # Short description: A fragment shader that covers a specific const folding rule path. |
| |
| # The test passes because shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '-O' |
| # spirv-opt commit hash: 9215c1b7df0029f27807e8c8d7ec80532ce90a87 |
| |
| |
| |
| 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 v; |
| # |
| # for(int i = 2; i < 3; i++) |
| # { |
| # vec4 tmp = vec4(0); |
| # tmp.xy = vec2(1.0, float(i)); |
| # v = tmp.xy; |
| # } |
| # |
| # // If condition is always false. |
| # if (v.x != 1.0 || v.y != 2.0) |
| # _GLF_color = vec4(0); |
| # else |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 69 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %57 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %57 "_GLF_color" |
| OpDecorate %38 RelaxedPrecision |
| OpDecorate %57 Location 0 |
| OpDecorate %62 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %9 = OpConstant %6 2 |
| %16 = OpConstant %6 3 |
| %17 = OpTypeBool |
| %19 = OpTypeFloat 32 |
| %20 = OpTypeVector %19 4 |
| %23 = OpConstant %19 0 |
| %24 = OpConstantComposite %20 %23 %23 %23 %23 |
| %25 = OpConstant %19 1 |
| %28 = OpTypeVector %19 2 |
| %37 = OpConstant %6 1 |
| %51 = OpConstant %19 2 |
| %56 = OpTypePointer Output %20 |
| %57 = OpVariable %56 Output |
| %59 = OpConstantComposite %20 %25 %23 %23 %25 |
| %64 = OpUndef %28 |
| %68 = OpConstantNull %20 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| OpBranch %10 |
| %10 = OpLabel |
| %63 = OpPhi %28 %64 %5 %35 %11 |
| %62 = OpPhi %6 %9 %5 %38 %11 |
| %18 = OpSLessThan %17 %62 %16 |
| OpLoopMerge %12 %11 None |
| OpBranchConditional %18 %11 %12 |
| %11 = OpLabel |
| %27 = OpConvertSToF %19 %62 |
| %29 = OpCompositeConstruct %28 %25 %27 |
| %35 = OpVectorShuffle %28 %29 %68 0 1 |
| %38 = OpIAdd %6 %62 %37 |
| OpBranch %10 |
| %12 = OpLabel |
| %43 = OpCompositeExtract %19 %63 0 |
| %44 = OpFOrdNotEqual %17 %43 %25 |
| %45 = OpLogicalNot %17 %44 |
| OpSelectionMerge %47 None |
| OpBranchConditional %45 %46 %47 |
| %46 = OpLabel |
| %50 = OpCompositeExtract %19 %63 1 |
| %52 = OpFOrdNotEqual %17 %50 %51 |
| OpBranch %47 |
| %47 = OpLabel |
| %53 = OpPhi %17 %44 %12 %52 %46 |
| OpSelectionMerge %55 None |
| OpBranchConditional %53 %54 %58 |
| %54 = OpLabel |
| OpStore %57 %24 |
| OpBranch %55 |
| %58 = OpLabel |
| OpStore %57 %59 |
| OpBranch %55 |
| %55 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| 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 |
| 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 |