| #!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_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(location = 0) out vec4 _GLF_color; |
| # |
| # // This function returns 0. |
| # int func() |
| # { |
| # return findLSB(ivec2(1)).g; |
| # } |
| # |
| # void main() |
| # { |
| # // Always true. |
| # if(func() == _int_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: 58 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %39 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 320 |
| OpName %4 "main" |
| OpName %8 "func(" |
| OpName %25 "buf0" |
| OpMemberName %25 0 "_GLF_uniform_int_values" |
| OpName %27 "" |
| OpName %39 "_GLF_color" |
| OpDecorate %13 RelaxedPrecision |
| OpDecorate %16 RelaxedPrecision |
| OpDecorate %24 ArrayStride 16 |
| OpMemberDecorate %25 0 Offset 0 |
| OpDecorate %25 Block |
| OpDecorate %27 DescriptorSet 0 |
| OpDecorate %27 Binding 0 |
| OpDecorate %39 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeFunction %6 |
| %10 = OpTypeVector %6 2 |
| %11 = OpConstant %6 1 |
| %12 = OpConstantComposite %10 %11 %11 |
| %14 = OpTypeInt 32 0 |
| %15 = OpConstant %14 1 |
| %17 = OpTypePointer Function %6 |
| %23 = OpConstant %14 2 |
| %24 = OpTypeArray %6 %23 |
| %25 = OpTypeStruct %24 |
| %26 = OpTypePointer Uniform %25 |
| %27 = OpVariable %26 Uniform |
| %28 = OpConstant %6 0 |
| %29 = OpTypePointer Uniform %6 |
| %32 = OpTypeBool |
| %36 = OpTypeFloat 32 |
| %37 = OpTypeVector %36 4 |
| %38 = OpTypePointer Output %37 |
| %39 = OpVariable %38 Output |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %22 = OpFunctionCall %6 %8 |
| %30 = OpAccessChain %29 %27 %28 %28 |
| %31 = OpLoad %6 %30 |
| %33 = OpIEqual %32 %22 %31 |
| OpSelectionMerge %35 None |
| OpBranchConditional %33 %34 %53 |
| %34 = OpLabel |
| %40 = OpAccessChain %29 %27 %28 %11 |
| %41 = OpLoad %6 %40 |
| %42 = OpConvertSToF %36 %41 |
| %43 = OpAccessChain %29 %27 %28 %28 |
| %44 = OpLoad %6 %43 |
| %45 = OpConvertSToF %36 %44 |
| %46 = OpAccessChain %29 %27 %28 %28 |
| %47 = OpLoad %6 %46 |
| %48 = OpConvertSToF %36 %47 |
| %49 = OpAccessChain %29 %27 %28 %11 |
| %50 = OpLoad %6 %49 |
| %51 = OpConvertSToF %36 %50 |
| %52 = OpCompositeConstruct %37 %42 %45 %48 %51 |
| OpStore %39 %52 |
| OpBranch %35 |
| %53 = OpLabel |
| %54 = OpAccessChain %29 %27 %28 %28 |
| %55 = OpLoad %6 %54 |
| %56 = OpConvertSToF %36 %55 |
| %57 = OpCompositeConstruct %37 %56 %56 %56 %56 |
| OpStore %39 %57 |
| OpBranch %35 |
| %35 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| %18 = OpVariable %17 Function |
| %13 = OpExtInst %10 %1 FindILsb %12 |
| %16 = OpCompositeExtract %6 %13 1 |
| OpStore %18 %16 |
| %19 = OpLoad %6 %18 |
| OpReturnValue %19 |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # _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 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 |