#!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_2_0 _GLF_uniform_float_values[0] # #define _float_1_0 _GLF_uniform_float_values[1] # # precision highp int; # precision highp float; # # // 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: [2.0, 1.0] # layout(set = 0, binding = 1) uniform buf1 # { # float _GLF_uniform_float_values[2]; # }; # # layout(location = 0) out vec4 _GLF_color; # # void main() # { # // (1, 1 - (-0)) dot (1, 1) = (1, 1) dot (1, 1) = 1 * 1 + 1 * 1 = 2 # float f = dot(vec2(_float_1_0, _float_1_0 - (- 0.0)), vec2(_float_1_0)); # # // Always true. # if(f == _float_2_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; 10 ; Bound: 64 ; 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 %8 "f" OpName %12 "buf1" OpMemberName %12 0 "_GLF_uniform_float_values" OpName %14 "" OpName %40 "_GLF_color" OpName %42 "buf0" OpMemberName %42 0 "_GLF_uniform_int_values" OpName %44 "" OpDecorate %11 ArrayStride 16 OpMemberDecorate %12 0 Offset 0 OpDecorate %12 Block OpDecorate %14 DescriptorSet 0 OpDecorate %14 Binding 1 OpDecorate %40 Location 0 OpDecorate %41 ArrayStride 16 OpMemberDecorate %42 0 Offset 0 OpDecorate %42 Block OpDecorate %44 DescriptorSet 0 OpDecorate %44 Binding 0 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypePointer Function %6 %9 = OpTypeInt 32 0 %10 = OpConstant %9 2 %11 = OpTypeArray %6 %10 %12 = OpTypeStruct %11 %13 = OpTypePointer Uniform %12 %14 = OpVariable %13 Uniform %15 = OpTypeInt 32 1 %16 = OpConstant %15 0 %17 = OpConstant %15 1 %18 = OpTypePointer Uniform %6 %23 = OpConstant %6 -0 %25 = OpTypeVector %6 2 %34 = OpTypeBool %38 = OpTypeVector %6 4 %39 = OpTypePointer Output %38 %40 = OpVariable %39 Output %41 = OpTypeArray %15 %10 %42 = OpTypeStruct %41 %43 = OpTypePointer Uniform %42 %44 = OpVariable %43 Uniform %45 = OpTypePointer Uniform %15 %4 = OpFunction %2 None %3 %5 = OpLabel %8 = OpVariable %7 Function %19 = OpAccessChain %18 %14 %16 %17 %20 = OpLoad %6 %19 %21 = OpAccessChain %18 %14 %16 %17 %22 = OpLoad %6 %21 %24 = OpFSub %6 %22 %23 %26 = OpCompositeConstruct %25 %20 %24 %27 = OpAccessChain %18 %14 %16 %17 %28 = OpLoad %6 %27 %29 = OpCompositeConstruct %25 %28 %28 %30 = OpDot %6 %26 %29 OpStore %8 %30 %31 = OpLoad %6 %8 %32 = OpAccessChain %18 %14 %16 %16 %33 = OpLoad %6 %32 %35 = OpFOrdEqual %34 %31 %33 OpSelectionMerge %37 None OpBranchConditional %35 %36 %59 %36 = OpLabel %46 = OpAccessChain %45 %44 %16 %16 %47 = OpLoad %15 %46 %48 = OpConvertSToF %6 %47 %49 = OpAccessChain %45 %44 %16 %17 %50 = OpLoad %15 %49 %51 = OpConvertSToF %6 %50 %52 = OpAccessChain %45 %44 %16 %17 %53 = OpLoad %15 %52 %54 = OpConvertSToF %6 %53 %55 = OpAccessChain %45 %44 %16 %16 %56 = OpLoad %15 %55 %57 = OpConvertSToF %6 %56 %58 = OpCompositeConstruct %38 %48 %51 %54 %57 OpStore %40 %58 OpBranch %37 %59 = OpLabel %60 = OpAccessChain %45 %44 %16 %17 %61 = OpLoad %15 %60 %62 = OpConvertSToF %6 %61 %63 = OpCompositeConstruct %38 %62 %62 %62 %62 OpStore %40 %63 OpBranch %37 %37 = OpLabel OpReturn OpFunctionEnd END # uniforms for variant # _GLF_uniform_float_values BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA 2.0 1.0 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