| #!amber |
| |
| # Copyright 2019 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 bug found by GraphicsFuzz. |
| |
| # Short description: A compute shader with loops, breaks, returns |
| |
| # The test passes because the shader immediately writes 42 to the 0th position |
| # in the SSBO and that is the only thing we check. All loops terminate. All |
| # other writes to the SSBO are at indices greater than 0. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--eliminate-dead-code-aggressive' |
| # '--simplify-instructions' |
| # '--redundancy-elimination' |
| # '--copy-propagate-arrays' |
| # '--convert-local-access-chains' |
| # '--eliminate-dead-branches' |
| # '--eliminate-local-multi-store' |
| # '--eliminate-local-multi-store' |
| # '--eliminate-dead-inserts' |
| # '--eliminate-local-single-block' |
| # '--redundancy-elimination' |
| # '--eliminate-dead-branches' |
| # spirv-opt commit hash: 4a00a80c40484a6f6f72f48c9d34943cf8f180d4 |
| |
| |
| |
| # variant_compute_shader is derived from the following GLSL: |
| # #version 310 es |
| # |
| # layout(std430, binding = 0) buffer theSSBO |
| # { |
| # uint data_out[5]; |
| # }; |
| # |
| # layout(set = 0, binding = 1) uniform buf0 { |
| # vec2 injectionSwitch; |
| # }; |
| # |
| # layout(local_size_x = 100, local_size_y = 1, local_size_z = 1) in; |
| # |
| # void main() |
| # { |
| # data_out[0] = 42u; |
| # uint gid = uint(injectionSwitch.y); // 1 |
| # do |
| # { |
| # if (1u != gid) // always false |
| # { |
| # data_out[1] = 1u; |
| # return; |
| # } |
| # } while (false); |
| # |
| # uint d; |
| # while (true) |
| # { |
| # if (d != 0u) |
| # { |
| # data_out[1] = 2u; |
| # for (int i = 0; i < 1; ++i) |
| # { |
| # data_out[1] = 3u; |
| # return; |
| # } |
| # } |
| # break; |
| # } |
| # data_out[gid] = 7u; // gid == 1 |
| # } |
| SHADER compute variant_compute_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 86 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint GLCompute %4 "main" |
| OpExecutionMode %4 LocalSize 100 1 1 |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "theSSBO" |
| OpMemberName %9 0 "data_out" |
| OpName %11 "" |
| OpName %18 "gid" |
| OpName %21 "buf0" |
| OpMemberName %21 0 "injectionSwitch" |
| OpName %23 "" |
| OpName %48 "d" |
| OpName %57 "i" |
| OpDecorate %8 ArrayStride 4 |
| OpMemberDecorate %9 0 Offset 0 |
| OpDecorate %9 BufferBlock |
| OpDecorate %11 DescriptorSet 0 |
| OpDecorate %11 Binding 0 |
| OpMemberDecorate %21 0 Offset 0 |
| OpDecorate %21 Block |
| OpDecorate %23 DescriptorSet 0 |
| OpDecorate %23 Binding 1 |
| OpDecorate %76 BuiltIn WorkgroupSize |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 0 |
| %7 = OpConstant %6 5 |
| %8 = OpTypeArray %6 %7 |
| %9 = OpTypeStruct %8 |
| %10 = OpTypePointer Uniform %9 |
| %11 = OpVariable %10 Uniform |
| %12 = OpTypeInt 32 1 |
| %13 = OpConstant %12 0 |
| %14 = OpConstant %6 42 |
| %15 = OpTypePointer Uniform %6 |
| %17 = OpTypePointer Function %6 |
| %19 = OpTypeFloat 32 |
| %20 = OpTypeVector %19 2 |
| %21 = OpTypeStruct %20 |
| %22 = OpTypePointer Uniform %21 |
| %23 = OpVariable %22 Uniform |
| %24 = OpConstant %6 1 |
| %25 = OpTypePointer Uniform %19 |
| %34 = OpTypeBool |
| %38 = OpConstant %12 1 |
| %41 = OpConstantFalse %34 |
| %47 = OpConstantTrue %34 |
| %50 = OpConstant %6 0 |
| %54 = OpConstant %6 2 |
| %56 = OpTypePointer Function %12 |
| %65 = OpConstant %6 3 |
| %72 = OpConstant %6 7 |
| %74 = OpTypeVector %6 3 |
| %75 = OpConstant %6 100 |
| %76 = OpConstantComposite %74 %75 %24 %24 |
| %80 = OpUndef %6 |
| %85 = OpUndef %12 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %18 = OpVariable %17 Function |
| %48 = OpVariable %17 Function |
| %57 = OpVariable %56 Function |
| %16 = OpAccessChain %15 %11 %13 %13 |
| OpStore %16 %14 |
| %26 = OpAccessChain %25 %23 %13 %24 |
| %27 = OpLoad %19 %26 |
| %28 = OpConvertFToU %6 %27 |
| OpStore %18 %28 |
| OpBranch %29 |
| %29 = OpLabel |
| OpLoopMerge %31 %32 None |
| OpBranch %30 |
| %30 = OpLabel |
| %35 = OpINotEqual %34 %24 %28 |
| OpSelectionMerge %37 None |
| OpBranchConditional %35 %36 %37 |
| %36 = OpLabel |
| %39 = OpAccessChain %15 %11 %13 %38 |
| OpStore %39 %24 |
| OpReturn |
| %37 = OpLabel |
| OpBranch %32 |
| %32 = OpLabel |
| OpBranchConditional %41 %29 %31 |
| %31 = OpLabel |
| OpBranch %42 |
| %42 = OpLabel |
| OpLoopMerge %44 %45 None |
| OpBranch %46 |
| %46 = OpLabel |
| OpBranch %43 |
| %43 = OpLabel |
| %51 = OpINotEqual %34 %80 %50 |
| OpSelectionMerge %53 None |
| OpBranchConditional %51 %52 %53 |
| %52 = OpLabel |
| %55 = OpAccessChain %15 %11 %13 %38 |
| OpStore %55 %54 |
| OpStore %57 %13 |
| OpBranch %58 |
| %58 = OpLabel |
| OpLoopMerge %60 %61 None |
| OpBranch %62 |
| %62 = OpLabel |
| %64 = OpSLessThan %34 %13 %38 |
| OpBranchConditional %64 %59 %60 |
| %59 = OpLabel |
| OpStore %55 %65 |
| OpReturn |
| %61 = OpLabel |
| OpBranch %58 |
| %60 = OpLabel |
| OpBranch %53 |
| %53 = OpLabel |
| %82 = OpPhi %6 %28 %43 %28 %60 |
| OpBranch %44 |
| %45 = OpLabel |
| OpBranch %42 |
| %44 = OpLabel |
| %73 = OpAccessChain %15 %11 %13 %82 |
| OpStore %73 %72 |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # injectionSwitch |
| BUFFER variant_injectionSwitch DATA_TYPE vec2<float> DATA |
| 0.0 1.0 |
| END |
| |
| BUFFER variant_ssbo DATA_TYPE uint32 DATA |
| 0 0 0 0 0 |
| END |
| |
| PIPELINE compute variant_pipeline |
| ATTACH variant_compute_shader |
| BIND BUFFER variant_ssbo AS storage DESCRIPTOR_SET 0 BINDING 0 |
| BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 1 |
| END |
| |
| RUN variant_pipeline 1 1 1 |
| |
| EXPECT variant_ssbo IDX 0 EQ 42 |