#!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 instruction simplification code path # The test passes because the 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(set = 0, binding = 0) uniform buf0 # { # float one; # }; # layout(location = 0) out vec4 _GLF_color; # # void main() # { # vec4 v = vec4(8.4, -864.665, 945.420, 1.0); # // Multiplying with an identity matrix returns the original vector. # vec4 res = mat4(one) * v; # # if (distance(v, res) < 0.01) # _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: 46 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %42 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 310 OpName %4 "main" OpName %9 "v" OpName %15 "res" OpName %16 "buf0" OpMemberName %16 0 "one" OpName %18 "" OpName %42 "_GLF_color" OpMemberDecorate %16 0 Offset 0 OpDecorate %16 Block OpDecorate %18 DescriptorSet 0 OpDecorate %18 Binding 0 OpDecorate %42 Location 0 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypeVector %6 4 %8 = OpTypePointer Function %7 %10 = OpConstant %6 8.39999962 %11 = OpConstant %6 -864.664978 %12 = OpConstant %6 945.419983 %13 = OpConstant %6 1 %14 = OpConstantComposite %7 %10 %11 %12 %13 %16 = OpTypeStruct %6 %17 = OpTypePointer Uniform %16 %18 = OpVariable %17 Uniform %19 = OpTypeInt 32 1 %20 = OpConstant %19 0 %21 = OpTypePointer Uniform %6 %24 = OpTypeMatrix %7 4 %25 = OpConstant %6 0 %36 = OpConstant %6 0.00999999978 %37 = OpTypeBool %41 = OpTypePointer Output %7 %42 = OpVariable %41 Output %43 = OpConstantComposite %7 %13 %25 %25 %13 %45 = OpConstantComposite %7 %25 %25 %25 %25 %4 = OpFunction %2 None %3 %5 = OpLabel %9 = OpVariable %8 Function %15 = OpVariable %8 Function OpStore %9 %14 %22 = OpAccessChain %21 %18 %20 %23 = OpLoad %6 %22 %26 = OpCompositeConstruct %7 %23 %25 %25 %25 %27 = OpCompositeConstruct %7 %25 %23 %25 %25 %28 = OpCompositeConstruct %7 %25 %25 %23 %25 %29 = OpCompositeConstruct %7 %25 %25 %25 %23 %30 = OpCompositeConstruct %24 %26 %27 %28 %29 %31 = OpLoad %7 %9 %32 = OpMatrixTimesVector %7 %30 %31 OpStore %15 %32 %33 = OpLoad %7 %9 %34 = OpLoad %7 %15 %35 = OpExtInst %6 %1 Distance %33 %34 %38 = OpFOrdLessThan %37 %35 %36 OpSelectionMerge %40 None OpBranchConditional %38 %39 %44 %39 = OpLabel OpStore %42 %43 OpBranch %40 %44 = OpLabel OpStore %42 %45 OpBranch %40 %40 = OpLabel OpReturn OpFunctionEnd END # uniforms for variant # one BUFFER variant_one DATA_TYPE float DATA 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_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