| #!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 constant folding 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; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # float one; |
| # }; |
| # |
| # void main() |
| # { |
| # float f = 1.0; |
| # |
| # do |
| # { |
| # f += one; |
| # } |
| # while(10.0 > clamp(f, 8.0, 9.0 + one)); |
| # |
| # if (f == 10.0) |
| # _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: 45 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %40 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "f" |
| OpName %14 "buf0" |
| OpMemberName %14 0 "one" |
| OpName %16 "" |
| OpName %40 "_GLF_color" |
| OpMemberDecorate %14 0 Offset 0 |
| OpDecorate %14 Block |
| OpDecorate %16 DescriptorSet 0 |
| OpDecorate %16 Binding 0 |
| OpDecorate %40 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypePointer Function %6 |
| %9 = OpConstant %6 1 |
| %14 = OpTypeStruct %6 |
| %15 = OpTypePointer Uniform %14 |
| %16 = OpVariable %15 Uniform |
| %17 = OpTypeInt 32 1 |
| %18 = OpConstant %17 0 |
| %19 = OpTypePointer Uniform %6 |
| %24 = OpConstant %6 10 |
| %26 = OpConstant %6 8 |
| %27 = OpConstant %6 9 |
| %32 = OpTypeBool |
| %38 = OpTypeVector %6 4 |
| %39 = OpTypePointer Output %38 |
| %40 = OpVariable %39 Output |
| %41 = OpConstant %6 0 |
| %42 = OpConstantComposite %38 %9 %41 %41 %9 |
| %44 = OpConstantComposite %38 %41 %41 %41 %41 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %8 = OpVariable %7 Function |
| OpStore %8 %9 |
| OpBranch %10 |
| %10 = OpLabel |
| OpLoopMerge %12 %13 None |
| OpBranch %11 |
| %11 = OpLabel |
| %20 = OpAccessChain %19 %16 %18 |
| %21 = OpLoad %6 %20 |
| %22 = OpLoad %6 %8 |
| %23 = OpFAdd %6 %22 %21 |
| OpStore %8 %23 |
| OpBranch %13 |
| %13 = OpLabel |
| %25 = OpLoad %6 %8 |
| %28 = OpAccessChain %19 %16 %18 |
| %29 = OpLoad %6 %28 |
| %30 = OpFAdd %6 %27 %29 |
| %31 = OpExtInst %6 %1 FClamp %25 %26 %30 |
| %33 = OpFOrdGreaterThan %32 %24 %31 |
| OpBranchConditional %33 %10 %12 |
| %12 = OpLabel |
| %34 = OpLoad %6 %8 |
| %35 = OpFOrdEqual %32 %34 %24 |
| OpSelectionMerge %37 None |
| OpBranchConditional %35 %36 %43 |
| %36 = OpLabel |
| OpStore %40 %42 |
| OpBranch %37 |
| %43 = OpLabel |
| OpStore %40 %44 |
| OpBranch %37 |
| %37 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # one |
| BUFFER variant_one DATA_TYPE float 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_one 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 |