| #!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 two nested for loops with return |
| |
| # The test passes because the shader always writes the color red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--private-to-local' |
| # '--if-conversion' |
| # '--eliminate-dead-inserts' |
| # '--eliminate-dead-branches' |
| # '--reduce-load-size' |
| # '--vector-dce' |
| # '--ccp' |
| # '--redundancy-elimination' |
| # '--convert-local-access-chains' |
| # '--eliminate-dead-inserts' |
| # '--ccp' |
| # '--eliminate-dead-branches' |
| # '--merge-blocks' |
| # '--eliminate-local-single-block' |
| # '--eliminate-local-single-block' |
| # '--copy-propagate-arrays' |
| # '--inline-entry-points-exhaustive' |
| # '--ccp' |
| # '--eliminate-local-multi-store' |
| # '--inline-entry-points-exhaustive' |
| # '--reduce-load-size' |
| # '--ccp' |
| # '--eliminate-local-single-block' |
| # '--eliminate-dead-branches' |
| # spirv-opt commit hash: 230c9e437146e48ec58adb4433890403c23c98fa |
| |
| |
| |
| 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; |
| # |
| # float nb_mod(float limit) |
| # { |
| # if (float(1) >= limit) |
| # { |
| # return 1.0; |
| # } |
| # for ( |
| # int _injected_loop_counter = 0; |
| # _injected_loop_counter < 2; |
| # ++_injected_loop_counter) |
| # { |
| # for ( |
| # int _injected_loop_counter = 0; |
| # _injected_loop_counter < 1; |
| # ++_injected_loop_counter) |
| # { |
| # return 1.0; |
| # } |
| # } |
| # } |
| # void main() |
| # { |
| # nb_mod(gl_FragCoord.x); |
| # _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: 65 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %48 %57 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %10 "nb_mod(f1;" |
| OpName %9 "limit" |
| OpName %21 "_injected_loop_counter" |
| OpName %31 "_injected_loop_counter" |
| OpName %48 "gl_FragCoord" |
| OpName %49 "param" |
| OpName %57 "_GLF_color" |
| OpDecorate %21 RelaxedPrecision |
| OpDecorate %31 RelaxedPrecision |
| OpDecorate %48 BuiltIn FragCoord |
| OpDecorate %57 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypePointer Function %6 |
| %8 = OpTypeFunction %6 %7 |
| %12 = OpConstant %6 1 |
| %14 = OpTypeBool |
| %19 = OpTypeInt 32 1 |
| %20 = OpTypePointer Function %19 |
| %22 = OpConstant %19 0 |
| %29 = OpConstant %19 2 |
| %38 = OpConstant %19 1 |
| %46 = OpTypeVector %6 4 |
| %47 = OpTypePointer Input %46 |
| %48 = OpVariable %47 Input |
| %50 = OpTypeInt 32 0 |
| %51 = OpConstant %50 0 |
| %52 = OpTypePointer Input %6 |
| %56 = OpTypePointer Output %46 |
| %57 = OpVariable %56 Output |
| %58 = OpConstant %6 0 |
| %59 = OpConstantComposite %46 %12 %58 %58 %12 |
| %63 = OpUndef %19 |
| %64 = OpConstantTrue %14 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %49 = OpVariable %7 Function |
| %53 = OpAccessChain %52 %48 %51 |
| %54 = OpLoad %6 %53 |
| OpStore %49 %54 |
| %55 = OpFunctionCall %6 %10 %49 |
| OpStore %57 %59 |
| OpReturn |
| OpFunctionEnd |
| %10 = OpFunction %6 None %8 |
| %9 = OpFunctionParameter %7 |
| %11 = OpLabel |
| %21 = OpVariable %20 Function |
| %31 = OpVariable %20 Function |
| %13 = OpLoad %6 %9 |
| %15 = OpFOrdGreaterThanEqual %14 %12 %13 |
| OpSelectionMerge %17 None |
| OpBranchConditional %15 %16 %17 |
| %16 = OpLabel |
| OpReturnValue %12 |
| %17 = OpLabel |
| OpStore %21 %22 |
| OpBranch %23 |
| %23 = OpLabel |
| %30 = OpSLessThan %14 %22 %29 |
| OpLoopMerge %25 %34 None |
| OpBranch %24 |
| %24 = OpLabel |
| OpStore %31 %22 |
| OpBranch %32 |
| %32 = OpLabel |
| %39 = OpSLessThan %14 %22 %38 |
| OpLoopMerge %34 %35 None |
| OpBranch %33 |
| %33 = OpLabel |
| OpReturnValue %12 |
| %35 = OpLabel |
| OpBranch %32 |
| %34 = OpLabel |
| OpBranch %23 |
| %25 = 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 |