| #!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 fragment shader with a for loop condition being always false |
| |
| # An always false condition is passed to a for loop inside a function. The test passes if red color is written after the for loop. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--vector-dce' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--eliminate-dead-code-aggressive' |
| # '--eliminate-local-single-block' |
| # '--private-to-local' |
| # '--convert-local-access-chains' |
| # '--simplify-instructions' |
| # '--eliminate-dead-inserts' |
| # '--copy-propagate-arrays' |
| # '--simplify-instructions' |
| # '--eliminate-dead-code-aggressive' |
| # '--eliminate-local-multi-store' |
| # spirv-opt commit hash: 9559cdbdf011c487f67f89e2d694bd4a18d5c1e0 |
| |
| 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 color; |
| # |
| # vec3 drawShape(vec2 pos) |
| # { |
| # bool c3; |
| # c3 = pos.y < 1.0; |
| # for( |
| # ivec2(8576, 72916); |
| # c3; |
| # bvec2(false, false) |
| # ) |
| # { |
| # return vec3(1.0); |
| # } |
| # return vec3(1.0); |
| # } |
| # void main() |
| # { |
| # drawShape(vec2(1.0)); |
| # color = vec4(1, 0, 0, 1); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 52 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %47 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %12 "drawShape(vf2;" |
| OpName %11 "pos" |
| OpName %16 "c3" |
| OpName %43 "param" |
| OpName %47 "color" |
| OpDecorate %47 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 2 |
| %8 = OpTypePointer Function %7 |
| %9 = OpTypeVector %6 3 |
| %10 = OpTypeFunction %9 %8 |
| %14 = OpTypeBool |
| %15 = OpTypePointer Function %14 |
| %17 = OpTypeInt 32 0 |
| %18 = OpConstant %17 1 |
| %19 = OpTypePointer Function %6 |
| %22 = OpConstant %6 1 |
| %35 = OpConstantComposite %9 %22 %22 %22 |
| %42 = OpConstantComposite %7 %22 %22 |
| %45 = OpTypeVector %6 4 |
| %46 = OpTypePointer Output %45 |
| %47 = OpVariable %46 Output |
| %48 = OpConstant %6 0 |
| %49 = OpConstantComposite %45 %22 %48 %48 %22 |
| %51 = OpUndef %14 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %43 = OpVariable %8 Function |
| OpStore %43 %42 |
| %44 = OpFunctionCall %9 %12 %43 |
| OpStore %47 %49 |
| OpReturn |
| OpFunctionEnd |
| %12 = OpFunction %9 None %10 |
| %11 = OpFunctionParameter %8 |
| %13 = OpLabel |
| %16 = OpVariable %15 Function |
| %20 = OpAccessChain %19 %11 %18 |
| %21 = OpLoad %6 %20 |
| %23 = OpFOrdLessThan %14 %21 %22 |
| OpStore %16 %23 |
| OpBranch %29 |
| %29 = OpLabel |
| %50 = OpPhi %14 %23 %13 %51 %32 |
| OpLoopMerge %31 %32 None |
| OpBranchConditional %50 %30 %31 |
| %30 = OpLabel |
| OpReturnValue %35 |
| %32 = OpLabel |
| OpBranch %29 |
| %31 = OpLabel |
| OpReturnValue %35 |
| OpFunctionEnd |
| 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 |
| 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 |