#!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 SPIR-V reader code paths # The test passes because the shader always writes red. SHADER vertex texgen_vert PASSTHROUGH SHADER fragment texgen_frag GLSL #version 430 precision highp float; layout(location = 0) out vec4 _GLF_color; void main() { _GLF_color = vec4( gl_FragCoord.x * (1.0 / 256.0), (int(gl_FragCoord.x) ^ int(gl_FragCoord.y)) * (1.0 / 256.0), gl_FragCoord.y * (1.0 / 256.0), 1.0); } END BUFFER default_texture FORMAT B8G8R8A8_UNORM PIPELINE graphics texgen_pipeline ATTACH texgen_vert ATTACH texgen_frag FRAMEBUFFER_SIZE 256 256 BIND BUFFER default_texture AS color LOCATION 0 END CLEAR_COLOR texgen_pipeline 0 0 0 255 CLEAR texgen_pipeline RUN texgen_pipeline DRAW_RECT POS 0 0 SIZE 256 256 SHADER vertex variant_vertex_shader PASSTHROUGH # variant_fragment_shader is derived from the following GLSL: # #version 320 es # #define _int_0 _GLF_uniform_int_values[0] # #define _int_1 _GLF_uniform_int_values[1] # # precision highp int; # precision highp float; # # // Contents of _GLF_uniform_int_values: [0, 1] # layout(set = 0, binding = 0) uniform buf0 # { # int _GLF_uniform_int_values[2]; # }; # # layout(set = 0, binding = 1) uniform sampler2D tex; # layout(location = 0) out vec4 _GLF_color; # # vec4 func(sampler2D s) # { # return texture(s, vec2(_int_0)); # } # # void main() # { # // Always true. # if (func(tex) == vec4(_int_0, _int_0, _int_0, _int_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: 78 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %59 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 320 OpName %4 "main" OpName %13 "func(s21;" OpName %12 "s" OpName %20 "buf0" OpMemberName %20 0 "_GLF_uniform_int_values" OpName %22 "" OpName %36 "tex" OpName %59 "_GLF_color" OpDecorate %12 RelaxedPrecision OpDecorate %15 RelaxedPrecision OpDecorate %19 ArrayStride 16 OpMemberDecorate %20 0 Offset 0 OpDecorate %20 Block OpDecorate %22 DescriptorSet 0 OpDecorate %22 Binding 0 OpDecorate %27 RelaxedPrecision OpDecorate %29 RelaxedPrecision OpDecorate %30 RelaxedPrecision OpDecorate %36 RelaxedPrecision OpDecorate %36 DescriptorSet 0 OpDecorate %36 Binding 1 OpDecorate %59 Location 0 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypeImage %6 2D 0 0 0 1 Unknown %8 = OpTypeSampledImage %7 %9 = OpTypePointer UniformConstant %8 %10 = OpTypeVector %6 4 %11 = OpTypeFunction %10 %9 %16 = OpTypeInt 32 1 %17 = OpTypeInt 32 0 %18 = OpConstant %17 2 %19 = OpTypeArray %16 %18 %20 = OpTypeStruct %19 %21 = OpTypePointer Uniform %20 %22 = OpVariable %21 Uniform %23 = OpConstant %16 0 %24 = OpTypePointer Uniform %16 %28 = OpTypeVector %6 2 %31 = OpTypePointer Function %10 %36 = OpVariable %9 UniformConstant %47 = OpConstant %16 1 %52 = OpTypeBool %53 = OpTypeVector %52 4 %58 = OpTypePointer Output %10 %59 = OpVariable %58 Output %4 = OpFunction %2 None %3 %5 = OpLabel %37 = OpFunctionCall %10 %13 %36 %38 = OpAccessChain %24 %22 %23 %23 %39 = OpLoad %16 %38 %40 = OpConvertSToF %6 %39 %41 = OpAccessChain %24 %22 %23 %23 %42 = OpLoad %16 %41 %43 = OpConvertSToF %6 %42 %44 = OpAccessChain %24 %22 %23 %23 %45 = OpLoad %16 %44 %46 = OpConvertSToF %6 %45 %48 = OpAccessChain %24 %22 %23 %47 %49 = OpLoad %16 %48 %50 = OpConvertSToF %6 %49 %51 = OpCompositeConstruct %10 %40 %43 %46 %50 %54 = OpFOrdEqual %53 %37 %51 %55 = OpAll %52 %54 OpSelectionMerge %57 None OpBranchConditional %55 %56 %73 %56 = OpLabel %60 = OpAccessChain %24 %22 %23 %47 %61 = OpLoad %16 %60 %62 = OpConvertSToF %6 %61 %63 = OpAccessChain %24 %22 %23 %23 %64 = OpLoad %16 %63 %65 = OpConvertSToF %6 %64 %66 = OpAccessChain %24 %22 %23 %23 %67 = OpLoad %16 %66 %68 = OpConvertSToF %6 %67 %69 = OpAccessChain %24 %22 %23 %47 %70 = OpLoad %16 %69 %71 = OpConvertSToF %6 %70 %72 = OpCompositeConstruct %10 %62 %65 %68 %71 OpStore %59 %72 OpBranch %57 %73 = OpLabel %74 = OpAccessChain %24 %22 %23 %23 %75 = OpLoad %16 %74 %76 = OpConvertSToF %6 %75 %77 = OpCompositeConstruct %10 %76 %76 %76 %76 OpStore %59 %77 OpBranch %57 %57 = OpLabel OpReturn OpFunctionEnd %13 = OpFunction %10 None %11 %12 = OpFunctionParameter %9 %14 = OpLabel %32 = OpVariable %31 Function %15 = OpLoad %8 %12 %25 = OpAccessChain %24 %22 %23 %23 %26 = OpLoad %16 %25 %27 = OpConvertSToF %6 %26 %29 = OpCompositeConstruct %28 %27 %27 %30 = OpImageSampleImplicitLod %10 %15 %29 OpStore %32 %30 %33 = OpLoad %10 %32 OpReturnValue %33 OpFunctionEnd END # uniforms for variant # tex SAMPLER variant_tex # _GLF_uniform_int_values BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA 0 1 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 default_texture AS combined_image_sampler SAMPLER variant_tex 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