| #!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 that loops only once |
| |
| # The test passes because the shader always writes the color red. The for loop only goes through once. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--vector-dce' |
| # '--eliminate-local-multi-store' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--ccp' |
| # '--eliminate-dead-inserts' |
| # '--convert-local-access-chains' |
| # '--vector-dce' |
| # '--eliminate-dead-code-aggressive' |
| # '--vector-dce' |
| # '--eliminate-local-multi-store' |
| # '--if-conversion' |
| # '--eliminate-dead-branches' |
| # spirv-opt commit hash: 06407250a169c6a03b3765e86619075af1a8c187 |
| |
| |
| |
| 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; |
| # |
| # vec3 mand() |
| # { |
| # do |
| # { |
| # return vec3(1.0); |
| # } while (true); |
| # } |
| # void main() |
| # { |
| # mand(); |
| # |
| # for ( |
| # int i = 1; |
| # true; |
| # 1) |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # return; |
| # } |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 36 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %33 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "mand(" |
| OpName %33 "_GLF_color" |
| OpDecorate %33 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 3 |
| %8 = OpTypeFunction %7 |
| %15 = OpConstant %6 1 |
| %16 = OpConstantComposite %7 %15 %15 %15 |
| %31 = OpTypeVector %6 4 |
| %32 = OpTypePointer Output %31 |
| %33 = OpVariable %32 Output |
| %34 = OpConstant %6 0 |
| %35 = OpConstantComposite %31 %15 %34 %34 %15 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %21 = OpFunctionCall %7 %9 |
| OpBranch %26 |
| %26 = OpLabel |
| OpLoopMerge %28 %29 None |
| OpBranch %27 |
| %27 = OpLabel |
| OpStore %33 %35 |
| OpReturn |
| %29 = OpLabel |
| OpBranch %26 |
| %28 = OpLabel |
| OpUnreachable |
| OpFunctionEnd |
| %9 = OpFunction %7 None %8 |
| %10 = OpLabel |
| OpBranch %11 |
| %11 = OpLabel |
| OpLoopMerge %13 %14 None |
| OpBranch %12 |
| %12 = OpLabel |
| OpReturnValue %16 |
| %14 = OpLabel |
| OpBranch %11 |
| %13 = OpLabel |
| OpUnreachable |
| OpFunctionEnd |
| END |
| |
| # uniforms for variant |
| |
| |
| 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 |