#!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 two: 2.0 # layout(push_constant) uniform buf_push # { # float two; # }; # # layout(location = 0) out vec4 _GLF_color; # # void main() # { # // Always true: regardless of the condition a value of one can never become larger by clamping. # if(clamp(1, _float_1_0 > two ? 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: 59 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %34 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 320 OpName %4 "main" OpName %12 "buf0" OpMemberName %12 0 "_GLF_uniform_float_values" OpName %14 "" OpName %19 "buf_push" OpMemberName %19 0 "two" OpName %21 "" OpName %34 "_GLF_color" OpName %37 "buf1" OpMemberName %37 0 "_GLF_uniform_int_values" OpName %39 "" OpDecorate %11 ArrayStride 16 OpMemberDecorate %12 0 Offset 0 OpDecorate %12 Block OpDecorate %14 DescriptorSet 0 OpDecorate %14 Binding 0 OpMemberDecorate %19 0 Offset 0 OpDecorate %19 Block OpDecorate %34 Location 0 OpDecorate %36 ArrayStride 16 OpMemberDecorate %37 0 Offset 0 OpDecorate %37 Block OpDecorate %39 DescriptorSet 0 OpDecorate %39 Binding 1 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeInt 32 1 %7 = OpConstant %6 1 %8 = OpTypeFloat 32 %9 = OpTypeInt 32 0 %10 = OpConstant %9 1 %11 = OpTypeArray %8 %10 %12 = OpTypeStruct %11 %13 = OpTypePointer Uniform %12 %14 = OpVariable %13 Uniform %15 = OpConstant %6 0 %16 = OpTypePointer Uniform %8 %19 = OpTypeStruct %8 %20 = OpTypePointer PushConstant %19 %21 = OpVariable %20 PushConstant %22 = OpTypePointer PushConstant %8 %25 = OpTypeBool %32 = OpTypeVector %8 4 %33 = OpTypePointer Output %32 %34 = OpVariable %33 Output %35 = OpConstant %9 2 %36 = OpTypeArray %6 %35 %37 = OpTypeStruct %36 %38 = OpTypePointer Uniform %37 %39 = OpVariable %38 Uniform %40 = OpTypePointer Uniform %6 %4 = OpFunction %2 None %3 %5 = OpLabel %17 = OpAccessChain %16 %14 %15 %15 %18 = OpLoad %8 %17 %23 = OpAccessChain %22 %21 %15 %24 = OpLoad %8 %23 %26 = OpFOrdGreaterThan %25 %18 %24 %27 = OpSelect %6 %26 %7 %15 %28 = OpExtInst %6 %1 SClamp %7 %27 %7 %29 = OpSLessThanEqual %25 %28 %7 OpSelectionMerge %31 None OpBranchConditional %29 %30 %54 %30 = OpLabel %41 = OpAccessChain %40 %39 %15 %15 %42 = OpLoad %6 %41 %43 = OpConvertSToF %8 %42 %44 = OpAccessChain %40 %39 %15 %7 %45 = OpLoad %6 %44 %46 = OpConvertSToF %8 %45 %47 = OpAccessChain %40 %39 %15 %7 %48 = OpLoad %6 %47 %49 = OpConvertSToF %8 %48 %50 = OpAccessChain %40 %39 %15 %15 %51 = OpLoad %6 %50 %52 = OpConvertSToF %8 %51 %53 = OpCompositeConstruct %32 %43 %46 %49 %52 OpStore %34 %53 OpBranch %31 %54 = OpLabel %55 = OpAccessChain %40 %39 %15 %7 %56 = OpLoad %6 %55 %57 = OpConvertSToF %8 %56 %58 = OpCompositeConstruct %32 %57 %57 %57 %57 OpStore %34 %58 OpBranch %31 %31 = OpLabel OpReturn OpFunctionEnd END # uniforms for variant # two BUFFER variant_two DATA_TYPE float STD140 DATA 2.0 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_two 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