| #!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 shader with a discard nested in a loop in a function |
| |
| # The test passes because the discard is always reached, so we end up with the background color, black. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--simplify-instructions' |
| # '--eliminate-dead-inserts' |
| # '--redundancy-elimination' |
| # '--inline-entry-points-exhaustive' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--convert-local-access-chains' |
| # '--convert-local-access-chains' |
| # '--eliminate-dead-code-aggressive' |
| # '--eliminate-local-single-store' |
| # '--if-conversion' |
| # '--simplify-instructions' |
| # spirv-opt commit hash: 6b072126595dd8c2448eb1fda616251c5e6d7079 |
| |
| |
| |
| 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 { |
| # vec2 injectionSwitch; |
| # }; |
| # void f() |
| # { |
| # do |
| # { |
| # if(1.0 > injectionSwitch.y) |
| # { |
| # if(gl_FragCoord.y < 0.0) |
| # { |
| # } |
| # continue; |
| # } |
| # discard; |
| # } |
| # while(false); |
| # } |
| # void main() |
| # { |
| # f(); |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 47 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %31 %44 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %6 "f(" |
| OpName %15 "buf0" |
| OpMemberName %15 0 "injectionSwitch" |
| OpName %17 "" |
| OpName %31 "gl_FragCoord" |
| OpName %44 "_GLF_color" |
| OpMemberDecorate %15 0 Offset 0 |
| OpDecorate %15 Block |
| OpDecorate %17 DescriptorSet 0 |
| OpDecorate %17 Binding 0 |
| OpDecorate %31 BuiltIn FragCoord |
| OpDecorate %44 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %12 = OpTypeFloat 32 |
| %13 = OpConstant %12 1 |
| %14 = OpTypeVector %12 2 |
| %15 = OpTypeStruct %14 |
| %16 = OpTypePointer Uniform %15 |
| %17 = OpVariable %16 Uniform |
| %18 = OpTypeInt 32 1 |
| %19 = OpConstant %18 0 |
| %20 = OpTypeInt 32 0 |
| %21 = OpConstant %20 1 |
| %22 = OpTypePointer Uniform %12 |
| %25 = OpTypeBool |
| %29 = OpTypeVector %12 4 |
| %30 = OpTypePointer Input %29 |
| %31 = OpVariable %30 Input |
| %32 = OpTypePointer Input %12 |
| %35 = OpConstant %12 0 |
| %41 = OpConstantFalse %25 |
| %43 = OpTypePointer Output %29 |
| %44 = OpVariable %43 Output |
| %45 = OpConstantComposite %29 %13 %35 %35 %13 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %42 = OpFunctionCall %2 %6 |
| OpStore %44 %45 |
| OpReturn |
| OpFunctionEnd |
| %6 = OpFunction %2 None %3 |
| %7 = OpLabel |
| OpBranch %8 |
| %8 = OpLabel |
| OpLoopMerge %10 %38 None |
| OpBranch %9 |
| %9 = OpLabel |
| %23 = OpAccessChain %22 %17 %19 %21 |
| %24 = OpLoad %12 %23 |
| %26 = OpFOrdGreaterThan %25 %13 %24 |
| OpSelectionMerge %28 None |
| OpBranchConditional %26 %27 %28 |
| %27 = OpLabel |
| %33 = OpAccessChain %32 %31 %21 |
| %34 = OpLoad %12 %33 |
| %36 = OpFOrdLessThan %25 %34 %35 |
| OpSelectionMerge %46 None |
| OpBranchConditional %36 %37 %38 |
| %37 = OpLabel |
| OpBranch %38 |
| %46 = OpLabel |
| OpBranch %38 |
| %38 = OpLabel |
| OpBranchConditional %41 %8 %10 |
| %28 = OpLabel |
| OpKill |
| %10 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| # injectionSwitch |
| BUFFER variant_injectionSwitch DATA_TYPE vec2<float> 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 0 0 0 255 |