| #!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 specific value tracking and simplification 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 |
| # precision highp float; |
| # precision highp int; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # int one; |
| # }; |
| # |
| # void main() |
| # { |
| # int a[3]; |
| # a[0] = 1; |
| # a[1] = 2; |
| # a[2] = 3; |
| # |
| # int b = 0; |
| # int c = a[one]; |
| # |
| # // Always true. |
| # if(c > 1) |
| # { |
| # // This will be overwritten later. |
| # _GLF_color = vec4(0, 1, 1, 0); |
| # ++b; |
| # } |
| # |
| # // Increments a[2] to 4. |
| # a[clamp(++b, 0, 2)]++; |
| # |
| # if (a[2] == 4) |
| # _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: 59 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %38 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %11 "a" |
| OpName %20 "b" |
| OpName %21 "c" |
| OpName %22 "buf0" |
| OpMemberName %22 0 "one" |
| OpName %24 "" |
| OpName %38 "_GLF_color" |
| OpMemberDecorate %22 0 Offset 0 |
| OpDecorate %22 Block |
| OpDecorate %24 DescriptorSet 0 |
| OpDecorate %24 Binding 0 |
| OpDecorate %38 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeInt 32 0 |
| %8 = OpConstant %7 3 |
| %9 = OpTypeArray %6 %8 |
| %10 = OpTypePointer Function %9 |
| %12 = OpConstant %6 0 |
| %13 = OpConstant %6 1 |
| %14 = OpTypePointer Function %6 |
| %16 = OpConstant %6 2 |
| %18 = OpConstant %6 3 |
| %22 = OpTypeStruct %6 |
| %23 = OpTypePointer Uniform %22 |
| %24 = OpVariable %23 Uniform |
| %25 = OpTypePointer Uniform %6 |
| %31 = OpTypeBool |
| %35 = OpTypeFloat 32 |
| %36 = OpTypeVector %35 4 |
| %37 = OpTypePointer Output %36 |
| %38 = OpVariable %37 Output |
| %39 = OpConstant %35 0 |
| %40 = OpConstant %35 1 |
| %41 = OpConstantComposite %36 %39 %40 %40 %39 |
| %52 = OpConstant %6 4 |
| %56 = OpConstantComposite %36 %40 %39 %39 %40 |
| %58 = OpConstantComposite %36 %39 %39 %39 %39 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %11 = OpVariable %10 Function |
| %20 = OpVariable %14 Function |
| %21 = OpVariable %14 Function |
| %15 = OpAccessChain %14 %11 %12 |
| OpStore %15 %13 |
| %17 = OpAccessChain %14 %11 %13 |
| OpStore %17 %16 |
| %19 = OpAccessChain %14 %11 %16 |
| OpStore %19 %18 |
| OpStore %20 %12 |
| %26 = OpAccessChain %25 %24 %12 |
| %27 = OpLoad %6 %26 |
| %28 = OpAccessChain %14 %11 %27 |
| %29 = OpLoad %6 %28 |
| OpStore %21 %29 |
| %30 = OpLoad %6 %21 |
| %32 = OpSGreaterThan %31 %30 %13 |
| OpSelectionMerge %34 None |
| OpBranchConditional %32 %33 %34 |
| %33 = OpLabel |
| OpStore %38 %41 |
| %42 = OpLoad %6 %20 |
| %43 = OpIAdd %6 %42 %13 |
| OpStore %20 %43 |
| OpBranch %34 |
| %34 = OpLabel |
| %44 = OpLoad %6 %20 |
| %45 = OpIAdd %6 %44 %13 |
| OpStore %20 %45 |
| %46 = OpExtInst %6 %1 SClamp %45 %12 %16 |
| %47 = OpAccessChain %14 %11 %46 |
| %48 = OpLoad %6 %47 |
| %49 = OpIAdd %6 %48 %13 |
| OpStore %47 %49 |
| %50 = OpAccessChain %14 %11 %16 |
| %51 = OpLoad %6 %50 |
| %53 = OpIEqual %31 %51 %52 |
| OpSelectionMerge %55 None |
| OpBranchConditional %53 %54 %57 |
| %54 = OpLabel |
| OpStore %38 %56 |
| OpBranch %55 |
| %57 = OpLabel |
| OpStore %38 %58 |
| OpBranch %55 |
| %55 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # one |
| BUFFER variant_one DATA_TYPE int32 DATA |
| 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_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 |