#!amber # Copyright 2021 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 specific LLVM code paths # 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 320 es # #define _int_1 _GLF_uniform_int_values[0] # #define _int_0 _GLF_uniform_int_values[1] # #define _float_0_5 _GLF_uniform_float_values[0] # # precision highp float; # precision highp int; # # // Contents of _GLF_uniform_int_values: [1, 0] # layout(set = 0, binding = 0) uniform buf0 # { # int _GLF_uniform_int_values[2]; # }; # # // Contents of _GLF_uniform_float_values: 0.5 # layout(set = 0, binding = 1) uniform buf1 # { # float _GLF_uniform_float_values[1]; # }; # # layout(location = 0) out vec4 _GLF_color; # # void main() # { # // Same as min(gl_FragCoord.xy, vec2(0.5)) which always results in vec2(0.5). # vec2 v0 = min(gl_FragCoord.xy, min(gl_FragCoord.xy, vec2(_float_0_5))); # # // Always true. # if(v0 == vec2(_float_0_5)) # { # _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; 10 ; Bound: 68 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %12 %42 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 320 OpName %4 "main" OpName %9 "v0" OpName %12 "gl_FragCoord" OpName %20 "buf1" OpMemberName %20 0 "_GLF_uniform_float_values" OpName %22 "" OpName %42 "_GLF_color" OpName %45 "buf0" OpMemberName %45 0 "_GLF_uniform_int_values" OpName %47 "" OpDecorate %12 BuiltIn FragCoord OpDecorate %19 ArrayStride 16 OpMemberDecorate %20 0 Offset 0 OpDecorate %20 Block OpDecorate %22 DescriptorSet 0 OpDecorate %22 Binding 1 OpDecorate %42 Location 0 OpDecorate %44 ArrayStride 16 OpMemberDecorate %45 0 Offset 0 OpDecorate %45 Block OpDecorate %47 DescriptorSet 0 OpDecorate %47 Binding 0 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypeVector %6 2 %8 = OpTypePointer Function %7 %10 = OpTypeVector %6 4 %11 = OpTypePointer Input %10 %12 = OpVariable %11 Input %17 = OpTypeInt 32 0 %18 = OpConstant %17 1 %19 = OpTypeArray %6 %18 %20 = OpTypeStruct %19 %21 = OpTypePointer Uniform %20 %22 = OpVariable %21 Uniform %23 = OpTypeInt 32 1 %24 = OpConstant %23 0 %25 = OpTypePointer Uniform %6 %35 = OpTypeBool %36 = OpTypeVector %35 2 %41 = OpTypePointer Output %10 %42 = OpVariable %41 Output %43 = OpConstant %17 2 %44 = OpTypeArray %23 %43 %45 = OpTypeStruct %44 %46 = OpTypePointer Uniform %45 %47 = OpVariable %46 Uniform %48 = OpTypePointer Uniform %23 %52 = OpConstant %23 1 %4 = OpFunction %2 None %3 %5 = OpLabel %9 = OpVariable %8 Function %13 = OpLoad %10 %12 %14 = OpVectorShuffle %7 %13 %13 0 1 %15 = OpLoad %10 %12 %16 = OpVectorShuffle %7 %15 %15 0 1 %26 = OpAccessChain %25 %22 %24 %24 %27 = OpLoad %6 %26 %28 = OpCompositeConstruct %7 %27 %27 %29 = OpExtInst %7 %1 FMin %16 %28 %30 = OpExtInst %7 %1 FMin %14 %29 OpStore %9 %30 %31 = OpLoad %7 %9 %32 = OpAccessChain %25 %22 %24 %24 %33 = OpLoad %6 %32 %34 = OpCompositeConstruct %7 %33 %33 %37 = OpFOrdEqual %36 %31 %34 %38 = OpAll %35 %37 OpSelectionMerge %40 None OpBranchConditional %38 %39 %63 %39 = OpLabel %49 = OpAccessChain %48 %47 %24 %24 %50 = OpLoad %23 %49 %51 = OpConvertSToF %6 %50 %53 = OpAccessChain %48 %47 %24 %52 %54 = OpLoad %23 %53 %55 = OpConvertSToF %6 %54 %56 = OpAccessChain %48 %47 %24 %52 %57 = OpLoad %23 %56 %58 = OpConvertSToF %6 %57 %59 = OpAccessChain %48 %47 %24 %24 %60 = OpLoad %23 %59 %61 = OpConvertSToF %6 %60 %62 = OpCompositeConstruct %10 %51 %55 %58 %61 OpStore %42 %62 OpBranch %40 %63 = OpLabel %64 = OpAccessChain %48 %47 %24 %52 %65 = OpLoad %23 %64 %66 = OpConvertSToF %6 %65 %67 = OpCompositeConstruct %10 %66 %66 %66 %66 OpStore %42 %67 OpBranch %40 %40 = OpLabel OpReturn OpFunctionEnd END # uniforms for variant # _GLF_uniform_float_values BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 0.5 END # _GLF_uniform_int_values BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 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__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1 BIND BUFFER variant__GLF_uniform_int_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