| #!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 bug found by the GraphicsFuzz project. |
| |
| # Short description: A fragment shader with false if return in do while loop |
| |
| # The test passes because the shader always writes color red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--inline-entry-points-exhaustive' |
| # '--ccp' |
| # '--eliminate-local-single-block' |
| # '--eliminate-dead-inserts' |
| # '--eliminate-dead-inserts' |
| # '--combine-access-chains' |
| # '--eliminate-local-single-block' |
| # '--reduce-load-size' |
| # '--eliminate-local-single-store' |
| # '--eliminate-dead-branches' |
| # '--reduce-load-size' |
| # '--eliminate-dead-code-aggressive' |
| # '--eliminate-local-multi-store' |
| # '--redundancy-elimination' |
| # spirv-opt commit hash: e28436f2b8a2f0705a07de908178d2ea2682c6d3 |
| |
| |
| |
| SHADER vertex variant_vertex_shader PASSTHROUGH |
| |
| # variant_fragment_shader is derived from the following GLSL: |
| # #version 320 es |
| # |
| # precision highp float; |
| # precision highp int; |
| # |
| # |
| # layout(set = 0, binding = 0) uniform buf0 |
| # { |
| # vec2 injectionSwitch; //x == 0.0, y == 1.0 |
| # }; |
| # |
| # struct struct_base |
| # { |
| # float count; |
| # }; |
| # |
| # layout(location = 0) out vec4 _GLF_color; |
| # |
| # void main() |
| # { // loop_limit == 100 |
| # int loop_limit = (injectionSwitch.y > 0.0 ? 100 : 1); |
| # int loop_count = 0; |
| # |
| # bool bool_a = true; |
| # |
| # struct_base struct_a = struct_base(1.0); |
| # do |
| # { |
| # loop_count++; |
| # // Always false. |
| # if (injectionSwitch.x > injectionSwitch.y) |
| # { |
| # return ; |
| # } |
| # } |
| # // Always false. |
| # while ((struct_a.count != injectionSwitch.y) && (loop_count < loop_limit)); |
| # bool_a = struct_a.count < 1.0; |
| # // bool_a == false |
| # if (bool_a == false) |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # } |
| # else |
| # { |
| # _GLF_color = vec4(1.0); |
| # }; |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 10 |
| ; Bound: 75 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %70 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 320 |
| OpName %4 "main" |
| OpName %11 "buf0" |
| OpMemberName %11 0 "injectionSwitch" |
| OpName %13 "" |
| OpName %26 "loop_count" |
| OpName %30 "struct_base" |
| OpMemberName %30 0 "count" |
| OpName %32 "struct_a" |
| OpName %70 "_GLF_color" |
| OpMemberDecorate %11 0 Offset 0 |
| OpDecorate %11 Block |
| OpDecorate %13 DescriptorSet 0 |
| OpDecorate %13 Binding 0 |
| OpDecorate %70 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypePointer Function %6 |
| %9 = OpTypeFloat 32 |
| %10 = OpTypeVector %9 2 |
| %11 = OpTypeStruct %10 |
| %12 = OpTypePointer Uniform %11 |
| %13 = OpVariable %12 Uniform |
| %14 = OpConstant %6 0 |
| %15 = OpTypeInt 32 0 |
| %16 = OpConstant %15 1 |
| %17 = OpTypePointer Uniform %9 |
| %20 = OpConstant %9 0 |
| %21 = OpTypeBool |
| %23 = OpConstant %6 100 |
| %24 = OpConstant %6 1 |
| %30 = OpTypeStruct %9 |
| %31 = OpTypePointer Function %30 |
| %33 = OpConstant %9 1 |
| %34 = OpConstantComposite %30 %33 |
| %41 = OpConstant %15 0 |
| %50 = OpTypePointer Function %9 |
| %64 = OpConstantFalse %21 |
| %68 = OpTypeVector %9 4 |
| %69 = OpTypePointer Output %68 |
| %70 = OpVariable %69 Output |
| %71 = OpConstantComposite %68 %33 %20 %20 %33 |
| %73 = OpConstantComposite %68 %33 %33 %33 %33 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %26 = OpVariable %7 Function |
| %32 = OpVariable %31 Function |
| %18 = OpAccessChain %17 %13 %14 %16 |
| %19 = OpLoad %9 %18 |
| %22 = OpFOrdGreaterThan %21 %19 %20 |
| %25 = OpSelect %6 %22 %23 %24 |
| OpStore %26 %14 |
| OpStore %32 %34 |
| OpBranch %35 |
| %35 = OpLabel |
| %74 = OpPhi %6 %14 %5 %40 %38 |
| OpLoopMerge %37 %38 None |
| OpBranch %36 |
| %36 = OpLabel |
| %40 = OpIAdd %6 %74 %24 |
| OpStore %26 %40 |
| %42 = OpAccessChain %17 %13 %14 %41 |
| %43 = OpLoad %9 %42 |
| %46 = OpFOrdGreaterThan %21 %43 %19 |
| OpSelectionMerge %48 None |
| OpBranchConditional %46 %47 %48 |
| %47 = OpLabel |
| OpReturn |
| %48 = OpLabel |
| OpBranch %38 |
| %38 = OpLabel |
| %51 = OpAccessChain %50 %32 %14 |
| %52 = OpLoad %9 %51 |
| %55 = OpFUnordNotEqual %21 %52 %19 |
| %58 = OpSLessThan %21 %40 %25 |
| %59 = OpLogicalAnd %21 %55 %58 |
| OpBranchConditional %59 %35 %37 |
| %37 = OpLabel |
| %61 = OpLoad %9 %51 |
| %62 = OpFOrdLessThan %21 %61 %33 |
| %65 = OpLogicalEqual %21 %62 %64 |
| OpSelectionMerge %67 None |
| OpBranchConditional %65 %66 %72 |
| %66 = OpLabel |
| OpStore %70 %71 |
| OpBranch %67 |
| %72 = OpLabel |
| OpStore %70 %73 |
| OpBranch %67 |
| %67 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # injectionSwitch |
| BUFFER variant_injectionSwitch DATA_TYPE vec2<float> STD140 DATA |
| 0.0 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_injectionSwitch 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 |