| #!amber |
| |
| # Copyright 2020 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 constant fold and selection dag 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 310 es |
| # #define _float_1_0 _GLF_uniform_float_values[0] |
| # #define _float_0_0 _GLF_uniform_float_values[1] |
| # |
| # precision highp float; |
| # |
| # // Contents of _GLF_uniform_float_values: [1.0, 0.0] |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # float _GLF_uniform_float_values[2]; |
| # }; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # void main() |
| # { |
| # float a = -1.0; |
| # float b = 1.7; |
| # |
| # // c becomes undefined since a < 0. This results in an undefined value, but not in undefined behavior. |
| # float c = pow(a, b); |
| # |
| # _GLF_color = vec4(c); |
| # |
| # if (a == -1.0 && b == 1.7) |
| # { |
| # _GLF_color = vec4(_float_1_0, _float_0_0, _float_0_0, _float_1_0); |
| # } |
| # else |
| # { |
| # _GLF_color = vec4(_float_1_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: 52 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %18 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "a" |
| OpName %10 "b" |
| OpName %12 "c" |
| OpName %18 "_GLF_color" |
| OpName %32 "buf0" |
| OpMemberName %32 0 "_GLF_uniform_float_values" |
| OpName %34 "" |
| OpDecorate %18 Location 0 |
| OpDecorate %31 ArrayStride 16 |
| OpMemberDecorate %32 0 Offset 0 |
| OpDecorate %32 Block |
| OpDecorate %34 DescriptorSet 0 |
| OpDecorate %34 Binding 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypePointer Function %6 |
| %9 = OpConstant %6 -1 |
| %11 = OpConstant %6 1.70000005 |
| %16 = OpTypeVector %6 4 |
| %17 = OpTypePointer Output %16 |
| %18 = OpVariable %17 Output |
| %22 = OpTypeBool |
| %29 = OpTypeInt 32 0 |
| %30 = OpConstant %29 2 |
| %31 = OpTypeArray %6 %30 |
| %32 = OpTypeStruct %31 |
| %33 = OpTypePointer Uniform %32 |
| %34 = OpVariable %33 Uniform |
| %35 = OpTypeInt 32 1 |
| %36 = OpConstant %35 0 |
| %37 = OpTypePointer Uniform %6 |
| %40 = OpConstant %35 1 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %8 = OpVariable %7 Function |
| %10 = OpVariable %7 Function |
| %12 = OpVariable %7 Function |
| OpStore %8 %9 |
| OpStore %10 %11 |
| %13 = OpLoad %6 %8 |
| %14 = OpLoad %6 %10 |
| %15 = OpExtInst %6 %1 Pow %13 %14 |
| OpStore %12 %15 |
| %19 = OpLoad %6 %12 |
| %20 = OpCompositeConstruct %16 %19 %19 %19 %19 |
| OpStore %18 %20 |
| %21 = OpLoad %6 %8 |
| %23 = OpFOrdEqual %22 %21 %9 |
| %24 = OpLoad %6 %10 |
| %25 = OpFOrdEqual %22 %24 %11 |
| %26 = OpLogicalAnd %22 %23 %25 |
| OpSelectionMerge %28 None |
| OpBranchConditional %26 %27 %48 |
| %27 = OpLabel |
| %38 = OpAccessChain %37 %34 %36 %36 |
| %39 = OpLoad %6 %38 |
| %41 = OpAccessChain %37 %34 %36 %40 |
| %42 = OpLoad %6 %41 |
| %43 = OpAccessChain %37 %34 %36 %40 |
| %44 = OpLoad %6 %43 |
| %45 = OpAccessChain %37 %34 %36 %36 |
| %46 = OpLoad %6 %45 |
| %47 = OpCompositeConstruct %16 %39 %42 %44 %46 |
| OpStore %18 %47 |
| OpBranch %28 |
| %48 = OpLabel |
| %49 = OpAccessChain %37 %34 %36 %36 |
| %50 = OpLoad %6 %49 |
| %51 = OpCompositeConstruct %16 %50 %50 %50 %50 |
| OpStore %18 %51 |
| OpBranch %28 |
| %28 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # _GLF_uniform_float_values |
| BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA |
| 1.0 0.0 |
| 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 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 |