#!amber # Copyright 2022 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_1_0 _GLF_uniform_float_values[0] # # precision highp float; # precision highp int; # # // Contents of _GLF_uniform_float_values: 1.0 # 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[2]; # }; # # // Contents of resolution: 32.0 # layout(push_constant) uniform buf_push # { # float resolution; # }; # # layout(location = 0) out vec4 _GLF_color; # # void main() # { # // Always true. Simplifies to clamp(0, 0, 1) < 1 -> 0 < 1. # if(clamp(resolution < _float_1_0 ? 1 : 0, resolution < _float_1_0 ? 1 : 0, 1) < 1) # { # _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: 65 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %40 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 320 OpName %4 "main" OpName %7 "buf_push" OpMemberName %7 0 "resolution" OpName %9 "" OpName %18 "buf0" OpMemberName %18 0 "_GLF_uniform_float_values" OpName %20 "" OpName %40 "_GLF_color" OpName %43 "buf1" OpMemberName %43 0 "_GLF_uniform_int_values" OpName %45 "" OpMemberDecorate %7 0 Offset 0 OpDecorate %7 Block OpDecorate %17 ArrayStride 16 OpMemberDecorate %18 0 Offset 0 OpDecorate %18 Block OpDecorate %20 DescriptorSet 0 OpDecorate %20 Binding 0 OpDecorate %40 Location 0 OpDecorate %42 ArrayStride 16 OpMemberDecorate %43 0 Offset 0 OpDecorate %43 Block OpDecorate %45 DescriptorSet 0 OpDecorate %45 Binding 1 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypeStruct %6 %8 = OpTypePointer PushConstant %7 %9 = OpVariable %8 PushConstant %10 = OpTypeInt 32 1 %11 = OpConstant %10 0 %12 = OpTypePointer PushConstant %6 %15 = OpTypeInt 32 0 %16 = OpConstant %15 1 %17 = OpTypeArray %6 %16 %18 = OpTypeStruct %17 %19 = OpTypePointer Uniform %18 %20 = OpVariable %19 Uniform %21 = OpTypePointer Uniform %6 %24 = OpTypeBool %26 = OpConstant %10 1 %38 = OpTypeVector %6 4 %39 = OpTypePointer Output %38 %40 = OpVariable %39 Output %41 = OpConstant %15 2 %42 = OpTypeArray %10 %41 %43 = OpTypeStruct %42 %44 = OpTypePointer Uniform %43 %45 = OpVariable %44 Uniform %46 = OpTypePointer Uniform %10 %4 = OpFunction %2 None %3 %5 = OpLabel %13 = OpAccessChain %12 %9 %11 %14 = OpLoad %6 %13 %22 = OpAccessChain %21 %20 %11 %11 %23 = OpLoad %6 %22 %25 = OpFOrdLessThan %24 %14 %23 %27 = OpSelect %10 %25 %26 %11 %28 = OpAccessChain %12 %9 %11 %29 = OpLoad %6 %28 %30 = OpAccessChain %21 %20 %11 %11 %31 = OpLoad %6 %30 %32 = OpFOrdLessThan %24 %29 %31 %33 = OpSelect %10 %32 %26 %11 %34 = OpExtInst %10 %1 SClamp %27 %33 %26 %35 = OpSLessThan %24 %34 %26 OpSelectionMerge %37 None OpBranchConditional %35 %36 %60 %36 = OpLabel %47 = OpAccessChain %46 %45 %11 %11 %48 = OpLoad %10 %47 %49 = OpConvertSToF %6 %48 %50 = OpAccessChain %46 %45 %11 %26 %51 = OpLoad %10 %50 %52 = OpConvertSToF %6 %51 %53 = OpAccessChain %46 %45 %11 %26 %54 = OpLoad %10 %53 %55 = OpConvertSToF %6 %54 %56 = OpAccessChain %46 %45 %11 %11 %57 = OpLoad %10 %56 %58 = OpConvertSToF %6 %57 %59 = OpCompositeConstruct %38 %49 %52 %55 %58 OpStore %40 %59 OpBranch %37 %60 = OpLabel %61 = OpAccessChain %46 %45 %11 %26 %62 = OpLoad %10 %61 %63 = OpConvertSToF %6 %62 %64 = OpCompositeConstruct %38 %63 %63 %63 %63 OpStore %40 %64 OpBranch %37 %37 = OpLabel OpReturn OpFunctionEnd END # uniforms for variant # resolution BUFFER variant_resolution DATA_TYPE float STD140 DATA 32.0 END # _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 1.0 END BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM PIPELINE graphics variant_pipeline ATTACH variant_vertex_shader ATTACH variant_fragment_shader FRAMEBUFFER_SIZE 32 32 BIND BUFFER variant_framebuffer AS color LOCATION 0 BIND BUFFER variant_resolution AS push_constant 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 32 32 EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255