#!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 NIR 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_0 _GLF_uniform_float_values[0] # #define _float_5_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: [0.0, 5.0] # layout(set = 0, binding = 1) uniform buf1 # { # float _GLF_uniform_float_values[2]; # }; # # layout(location = 0) out vec4 _GLF_color; # # void main() # { # // Trunc returns either 0.0 or 1.0. Fract will return zero for both. # float f = fract(trunc(gl_FragCoord.y < _float_5_0 ? 0.1 : 1.0)); # # // Always true. # if(f == _float_0_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: 66 ; Schema: 0 OpCapability Shader %1 = OpExtInstImport "GLSL.std.450" OpMemoryModel Logical GLSL450 OpEntryPoint Fragment %4 "main" %11 %42 OpExecutionMode %4 OriginUpperLeft OpSource ESSL 320 OpName %4 "main" OpName %8 "f" OpName %11 "gl_FragCoord" OpName %19 "buf1" OpMemberName %19 0 "_GLF_uniform_float_values" OpName %21 "" OpName %42 "_GLF_color" OpName %44 "buf0" OpMemberName %44 0 "_GLF_uniform_int_values" OpName %46 "" OpDecorate %11 BuiltIn FragCoord OpDecorate %18 ArrayStride 16 OpMemberDecorate %19 0 Offset 0 OpDecorate %19 Block OpDecorate %21 DescriptorSet 0 OpDecorate %21 Binding 1 OpDecorate %42 Location 0 OpDecorate %43 ArrayStride 16 OpMemberDecorate %44 0 Offset 0 OpDecorate %44 Block OpDecorate %46 DescriptorSet 0 OpDecorate %46 Binding 0 %2 = OpTypeVoid %3 = OpTypeFunction %2 %6 = OpTypeFloat 32 %7 = OpTypePointer Function %6 %9 = OpTypeVector %6 4 %10 = OpTypePointer Input %9 %11 = OpVariable %10 Input %12 = OpTypeInt 32 0 %13 = OpConstant %12 1 %14 = OpTypePointer Input %6 %17 = OpConstant %12 2 %18 = OpTypeArray %6 %17 %19 = OpTypeStruct %18 %20 = OpTypePointer Uniform %19 %21 = OpVariable %20 Uniform %22 = OpTypeInt 32 1 %23 = OpConstant %22 0 %24 = OpConstant %22 1 %25 = OpTypePointer Uniform %6 %28 = OpTypeBool %30 = OpConstant %6 0.100000001 %31 = OpConstant %6 1 %41 = OpTypePointer Output %9 %42 = OpVariable %41 Output %43 = OpTypeArray %22 %17 %44 = OpTypeStruct %43 %45 = OpTypePointer Uniform %44 %46 = OpVariable %45 Uniform %47 = OpTypePointer Uniform %22 %4 = OpFunction %2 None %3 %5 = OpLabel %8 = OpVariable %7 Function %15 = OpAccessChain %14 %11 %13 %16 = OpLoad %6 %15 %26 = OpAccessChain %25 %21 %23 %24 %27 = OpLoad %6 %26 %29 = OpFOrdLessThan %28 %16 %27 %32 = OpSelect %6 %29 %30 %31 %33 = OpExtInst %6 %1 Trunc %32 %34 = OpExtInst %6 %1 Fract %33 OpStore %8 %34 %35 = OpLoad %6 %8 %36 = OpAccessChain %25 %21 %23 %23 %37 = OpLoad %6 %36 %38 = OpFOrdEqual %28 %35 %37 OpSelectionMerge %40 None OpBranchConditional %38 %39 %61 %39 = OpLabel %48 = OpAccessChain %47 %46 %23 %23 %49 = OpLoad %22 %48 %50 = OpConvertSToF %6 %49 %51 = OpAccessChain %47 %46 %23 %24 %52 = OpLoad %22 %51 %53 = OpConvertSToF %6 %52 %54 = OpAccessChain %47 %46 %23 %24 %55 = OpLoad %22 %54 %56 = OpConvertSToF %6 %55 %57 = OpAccessChain %47 %46 %23 %23 %58 = OpLoad %22 %57 %59 = OpConvertSToF %6 %58 %60 = OpCompositeConstruct %9 %50 %53 %56 %59 OpStore %42 %60 OpBranch %40 %61 = OpLabel %62 = OpAccessChain %47 %46 %23 %24 %63 = OpLoad %22 %62 %64 = OpConvertSToF %6 %63 %65 = OpCompositeConstruct %9 %64 %64 %64 %64 OpStore %42 %65 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 0.0 5.0 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