| #!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 discards in loops and conditionals |
| |
| # The test passes because the fragment shader writes a red pixel, and then |
| # terminates without further output manipulation (the discards are not |
| # dynamically reachable) |
| |
| 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; |
| # |
| # void main(void) |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # if(int(gl_FragCoord.x) < 2000) { |
| # } else { |
| # for(int ll = 0; ; ll++) { |
| # if(gl_FragCoord.x < 0.0) { |
| # discard; |
| # } |
| # if(ll >= 5) { |
| # break; |
| # } |
| # } |
| # if(int(gl_FragCoord.x) >= 2000) { |
| # discard; |
| # } |
| # } |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0 |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 7 |
| ; Bound: 57 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %9 %14 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %9 "_GLF_color" |
| OpName %14 "gl_FragCoord" |
| OpName %29 "ll" |
| OpDecorate %9 Location 0 |
| OpDecorate %14 BuiltIn FragCoord |
| OpDecorate %29 RelaxedPrecision |
| OpDecorate %41 RelaxedPrecision |
| OpDecorate %47 RelaxedPrecision |
| OpDecorate %49 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeVector %6 4 |
| %8 = OpTypePointer Output %7 |
| %9 = OpVariable %8 Output |
| %10 = OpConstant %6 1 |
| %11 = OpConstant %6 0 |
| %12 = OpConstantComposite %7 %10 %11 %11 %10 |
| %13 = OpTypePointer Input %7 |
| %14 = OpVariable %13 Input |
| %15 = OpTypeInt 32 0 |
| %16 = OpConstant %15 0 |
| %17 = OpTypePointer Input %6 |
| %20 = OpTypeInt 32 1 |
| %22 = OpConstant %20 2000 |
| %23 = OpTypeBool |
| %28 = OpTypePointer Function %20 |
| %30 = OpConstant %20 0 |
| %42 = OpConstant %20 5 |
| %48 = OpConstant %20 1 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %29 = OpVariable %28 Function |
| OpStore %9 %12 |
| %18 = OpAccessChain %17 %14 %16 |
| %19 = OpLoad %6 %18 |
| %21 = OpConvertFToS %20 %19 |
| %24 = OpSLessThan %23 %21 %22 |
| OpSelectionMerge %26 None |
| OpBranchConditional %24 %25 %27 |
| %25 = OpLabel |
| OpBranch %26 |
| %27 = OpLabel |
| OpStore %29 %30 |
| OpBranch %31 |
| %31 = OpLabel |
| OpLoopMerge %33 %34 None |
| OpBranch %32 |
| %32 = OpLabel |
| %35 = OpAccessChain %17 %14 %16 |
| %36 = OpLoad %6 %35 |
| %37 = OpFOrdLessThan %23 %36 %11 |
| OpSelectionMerge %39 None |
| OpBranchConditional %37 %38 %39 |
| %38 = OpLabel |
| OpKill |
| %39 = OpLabel |
| %41 = OpLoad %20 %29 |
| %43 = OpSGreaterThanEqual %23 %41 %42 |
| OpSelectionMerge %45 None |
| OpBranchConditional %43 %44 %45 |
| %44 = OpLabel |
| OpBranch %33 |
| %45 = OpLabel |
| OpBranch %34 |
| %34 = OpLabel |
| %47 = OpLoad %20 %29 |
| %49 = OpIAdd %20 %47 %48 |
| OpStore %29 %49 |
| OpBranch %31 |
| %33 = OpLabel |
| %50 = OpAccessChain %17 %14 %16 |
| %51 = OpLoad %6 %50 |
| %52 = OpConvertFToS %20 %51 |
| %53 = OpSGreaterThanEqual %23 %52 %22 |
| OpSelectionMerge %55 None |
| OpBranchConditional %53 %54 %55 |
| %54 = OpLabel |
| OpKill |
| %55 = OpLabel |
| OpBranch %26 |
| %26 = OpLabel |
| OpReturn |
| 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 |