#!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. 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() # { # if(dot(vec2(determinant(mat2(1)), 0), vec2(0)) == 0.0) # _GLF_color = vec4(1, 0, 0, 1); # else # _GLF_color = vec4(0); # } SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 ; SPIR-V ; Version: 1.0 ; Generator: Khronos Glslang Reference Front End; 8 ; Bound: 28 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %24 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 310 OpName %4 "main" OpName %24 "_GLF_color" OpDecorate %24 Location 0 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypeVector %6 2 %8 = OpTypeMatrix %7 2 %9 = OpConstant %6 1 %10 = OpConstant %6 0 %11 = OpConstantComposite %7 %9 %10 %12 = OpConstantComposite %7 %10 %9 %13 = OpConstantComposite %8 %11 %12 %16 = OpConstantComposite %7 %10 %10 %18 = OpTypeBool %22 = OpTypeVector %6 4 %23 = OpTypePointer Output %22 %24 = OpVariable %23 Output %25 = OpConstantComposite %22 %9 %10 %10 %9 %27 = OpConstantComposite %22 %10 %10 %10 %10 %4 = OpFunction %2 None %3 %5 = OpLabel %14 = OpExtInst %6 %1 Determinant %13 %15 = OpCompositeConstruct %7 %14 %10 %17 = OpDot %6 %15 %16 %19 = OpFOrdEqual %18 %17 %10 OpSelectionMerge %21 None OpBranchConditional %19 %20 %26 %20 = OpLabel OpStore %24 %25 OpBranch %21 %26 = OpLabel OpStore %24 %27 OpBranch %21 %21 = 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