| #!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 instruction simplification code path |
| |
| # 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 |
| # precision highp float; |
| # |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # float one; |
| # }; |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # void main() |
| # { |
| # vec4 v = vec4(8.4, -864.665, 945.420, 1.0); |
| # // Multiplying with an identity matrix returns the original vector. |
| # vec4 res = mat4(one) * v; |
| # |
| # if (distance(v, res) < 0.01) |
| # _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: 46 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %42 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "v" |
| OpName %15 "res" |
| OpName %16 "buf0" |
| OpMemberName %16 0 "one" |
| OpName %18 "" |
| OpName %42 "_GLF_color" |
| OpMemberDecorate %16 0 Offset 0 |
| OpDecorate %16 Block |
| OpDecorate %18 DescriptorSet 0 |
| OpDecorate %18 Binding 0 |
| OpDecorate %42 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 4 |
| %8 = OpTypePointer Function %7 |
| %10 = OpConstant %6 8.39999962 |
| %11 = OpConstant %6 -864.664978 |
| %12 = OpConstant %6 945.419983 |
| %13 = OpConstant %6 1 |
| %14 = OpConstantComposite %7 %10 %11 %12 %13 |
| %16 = OpTypeStruct %6 |
| %17 = OpTypePointer Uniform %16 |
| %18 = OpVariable %17 Uniform |
| %19 = OpTypeInt 32 1 |
| %20 = OpConstant %19 0 |
| %21 = OpTypePointer Uniform %6 |
| %24 = OpTypeMatrix %7 4 |
| %25 = OpConstant %6 0 |
| %36 = OpConstant %6 0.00999999978 |
| %37 = OpTypeBool |
| %41 = OpTypePointer Output %7 |
| %42 = OpVariable %41 Output |
| %43 = OpConstantComposite %7 %13 %25 %25 %13 |
| %45 = OpConstantComposite %7 %25 %25 %25 %25 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %9 = OpVariable %8 Function |
| %15 = OpVariable %8 Function |
| OpStore %9 %14 |
| %22 = OpAccessChain %21 %18 %20 |
| %23 = OpLoad %6 %22 |
| %26 = OpCompositeConstruct %7 %23 %25 %25 %25 |
| %27 = OpCompositeConstruct %7 %25 %23 %25 %25 |
| %28 = OpCompositeConstruct %7 %25 %25 %23 %25 |
| %29 = OpCompositeConstruct %7 %25 %25 %25 %23 |
| %30 = OpCompositeConstruct %24 %26 %27 %28 %29 |
| %31 = OpLoad %7 %9 |
| %32 = OpMatrixTimesVector %7 %30 %31 |
| OpStore %15 %32 |
| %33 = OpLoad %7 %9 |
| %34 = OpLoad %7 %15 |
| %35 = OpExtInst %6 %1 Distance %33 %34 |
| %38 = OpFOrdLessThan %37 %35 %36 |
| OpSelectionMerge %40 None |
| OpBranchConditional %38 %39 %44 |
| %39 = OpLabel |
| OpStore %42 %43 |
| OpBranch %40 |
| %44 = OpLabel |
| OpStore %42 %45 |
| OpBranch %40 |
| %40 = 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 |