| #!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 GraphicsFuzz. |
| |
| # Short description: A fragment shader that covers a specific if condition conversion path. |
| |
| # The test passes because shader always writes red. |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 310 es |
| # precision highp float; |
| # precision highp int; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # int zero; |
| # }; |
| # |
| # void main() |
| # { |
| # int a = zero; |
| # |
| # // Always true. |
| # if (a == 0) |
| # a++; |
| # else |
| # a++; |
| # |
| # // Always true. |
| # if (a == 1) |
| # _GLF_color = vec4(1, 0, 0, 1); |
| # else |
| # _GLF_color = vec4(0); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 40 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %34 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "a" |
| OpName %9 "buf0" |
| OpMemberName %9 0 "zero" |
| OpName %11 "" |
| OpName %34 "_GLF_color" |
| OpMemberDecorate %9 0 Offset 0 |
| OpDecorate %9 Block |
| OpDecorate %11 DescriptorSet 0 |
| OpDecorate %11 Binding 0 |
| OpDecorate %34 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypePointer Function %6 |
| %9 = OpTypeStruct %6 |
| %10 = OpTypePointer Uniform %9 |
| %11 = OpVariable %10 Uniform |
| %12 = OpConstant %6 0 |
| %13 = OpTypePointer Uniform %6 |
| %17 = OpTypeBool |
| %22 = OpConstant %6 1 |
| %31 = OpTypeFloat 32 |
| %32 = OpTypeVector %31 4 |
| %33 = OpTypePointer Output %32 |
| %34 = OpVariable %33 Output |
| %35 = OpConstant %31 1 |
| %36 = OpConstant %31 0 |
| %37 = OpConstantComposite %32 %35 %36 %36 %35 |
| %39 = OpConstantComposite %32 %36 %36 %36 %36 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %8 = OpVariable %7 Function |
| %14 = OpAccessChain %13 %11 %12 |
| %15 = OpLoad %6 %14 |
| OpStore %8 %15 |
| %16 = OpLoad %6 %8 |
| %18 = OpIEqual %17 %16 %12 |
| OpSelectionMerge %20 None |
| OpBranchConditional %18 %19 %24 |
| %19 = OpLabel |
| %21 = OpLoad %6 %8 |
| %23 = OpIAdd %6 %21 %22 |
| OpStore %8 %23 |
| OpBranch %20 |
| %24 = OpLabel |
| %25 = OpLoad %6 %8 |
| %26 = OpIAdd %6 %25 %22 |
| OpStore %8 %26 |
| OpBranch %20 |
| %20 = OpLabel |
| %27 = OpLoad %6 %8 |
| %28 = OpIEqual %17 %27 %22 |
| OpSelectionMerge %30 None |
| OpBranchConditional %28 %29 %38 |
| %29 = OpLabel |
| OpStore %34 %37 |
| OpBranch %30 |
| %38 = OpLabel |
| OpStore %34 %39 |
| OpBranch %30 |
| %30 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # zero |
| BUFFER variant_zero DATA_TYPE int32 DATA |
| 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_zero 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 |