#!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 the GraphicsFuzz project. # Short description: A fragment shader that covers a specific floating point 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 # #define _int_1 _GLF_uniform_int_values[0] # #define _int_0 _GLF_uniform_int_values[1] # #define _float_0_0 _GLF_uniform_float_values[0] # # precision highp float; # # // Contents of _GLF_uniform_float_values: 0.0 # layout(set = 0, binding = 0) uniform buf0 # { # float _GLF_uniform_float_values[1]; # }; # # // Contents of _GLF_uniform_int_values: [1, 0] # layout(set = 0, binding = 1) uniform buf1 # { # int _GLF_uniform_int_values[3]; # }; # layout(location = 0) out vec4 _GLF_color; # # void main() # { # // This results in an undefined value, but not in undefined behavior. # float undefined = mod(5.0, 0.0); # if (_int_1 == (_int_1 + _int_0) || undefined > _float_0_0) # { # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1); # } # else # { # _GLF_color = vec4(_int_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: 68 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %49 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 310 OpName %4 "main" OpName %8 "undefined" OpName %17 "buf1" OpMemberName %17 0 "_GLF_uniform_int_values" OpName %19 "" OpName %37 "buf0" OpMemberName %37 0 "_GLF_uniform_float_values" OpName %39 "" OpName %49 "_GLF_color" OpDecorate %16 ArrayStride 16 OpMemberDecorate %17 0 RelaxedPrecision OpMemberDecorate %17 0 Offset 0 OpDecorate %17 Block OpDecorate %19 DescriptorSet 0 OpDecorate %19 Binding 1 OpDecorate %23 RelaxedPrecision OpDecorate %25 RelaxedPrecision OpDecorate %28 RelaxedPrecision OpDecorate %29 RelaxedPrecision OpDecorate %36 ArrayStride 16 OpMemberDecorate %37 0 Offset 0 OpDecorate %37 Block OpDecorate %39 DescriptorSet 0 OpDecorate %39 Binding 0 OpDecorate %49 Location 0 OpDecorate %51 RelaxedPrecision OpDecorate %54 RelaxedPrecision OpDecorate %57 RelaxedPrecision OpDecorate %60 RelaxedPrecision OpDecorate %65 RelaxedPrecision %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypePointer Function %6 %9 = OpConstant %6 5 %10 = OpConstant %6 0 %12 = OpTypeBool %13 = OpTypeInt 32 1 %14 = OpTypeInt 32 0 %15 = OpConstant %14 3 %16 = OpTypeArray %13 %15 %17 = OpTypeStruct %16 %18 = OpTypePointer Uniform %17 %19 = OpVariable %18 Uniform %20 = OpConstant %13 0 %21 = OpTypePointer Uniform %13 %26 = OpConstant %13 1 %35 = OpConstant %14 1 %36 = OpTypeArray %6 %35 %37 = OpTypeStruct %36 %38 = OpTypePointer Uniform %37 %39 = OpVariable %38 Uniform %40 = OpTypePointer Uniform %6 %47 = OpTypeVector %6 4 %48 = OpTypePointer Output %47 %49 = OpVariable %48 Output %4 = OpFunction %2 None %3 %5 = OpLabel %8 = OpVariable %7 Function %11 = OpFMod %6 %9 %10 OpStore %8 %11 %22 = OpAccessChain %21 %19 %20 %20 %23 = OpLoad %13 %22 %24 = OpAccessChain %21 %19 %20 %20 %25 = OpLoad %13 %24 %27 = OpAccessChain %21 %19 %20 %26 %28 = OpLoad %13 %27 %29 = OpIAdd %13 %25 %28 %30 = OpIEqual %12 %23 %29 %31 = OpLogicalNot %12 %30 OpSelectionMerge %33 None OpBranchConditional %31 %32 %33 %32 = OpLabel %34 = OpLoad %6 %8 %41 = OpAccessChain %40 %39 %20 %20 %42 = OpLoad %6 %41 %43 = OpFOrdGreaterThan %12 %34 %42 OpBranch %33 %33 = OpLabel %44 = OpPhi %12 %30 %5 %43 %32 OpSelectionMerge %46 None OpBranchConditional %44 %45 %63 %45 = OpLabel %50 = OpAccessChain %21 %19 %20 %20 %51 = OpLoad %13 %50 %52 = OpConvertSToF %6 %51 %53 = OpAccessChain %21 %19 %20 %26 %54 = OpLoad %13 %53 %55 = OpConvertSToF %6 %54 %56 = OpAccessChain %21 %19 %20 %26 %57 = OpLoad %13 %56 %58 = OpConvertSToF %6 %57 %59 = OpAccessChain %21 %19 %20 %20 %60 = OpLoad %13 %59 %61 = OpConvertSToF %6 %60 %62 = OpCompositeConstruct %47 %52 %55 %58 %61 OpStore %49 %62 OpBranch %46 %63 = OpLabel %64 = OpAccessChain %21 %19 %20 %26 %65 = OpLoad %13 %64 %66 = OpConvertSToF %6 %65 %67 = OpCompositeConstruct %47 %66 %66 %66 %66 OpStore %49 %67 OpBranch %46 %46 = OpLabel OpReturn OpFunctionEnd END # uniforms for variant # _GLF_uniform_int_values BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 1 0 END # _GLF_uniform_float_values BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 0.0 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__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1 BIND BUFFER variant__GLF_uniform_float_values 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