| #!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 that assigns vector values |
| |
| # The test passes because shader always writes red. |
| |
| # Optimized using spirv-opt with the following arguments: |
| # '--eliminate-dead-branches' |
| # '--eliminate-dead-inserts' |
| # '--combine-access-chains' |
| # '--eliminate-local-multi-store' |
| # '--simplify-instructions' |
| # '--eliminate-dead-branches' |
| # '--vector-dce' |
| # '--combine-access-chains' |
| # '--eliminate-local-single-store' |
| # '--eliminate-local-multi-store' |
| # '--eliminate-dead-inserts' |
| # '--if-conversion' |
| # '--copy-propagate-arrays' |
| # '--combine-access-chains' |
| # spirv-opt commit hash: e82a428605f6ce0a07337b36f8ba3935c9f165ac |
| |
| |
| |
| 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; |
| # |
| # int func() |
| # { |
| # vec4 tmp; |
| # float tmp2[1]; |
| # float tmp3; |
| # vec2 coord = vec2(1.0); |
| # |
| # if (int(coord.y) < 180) // Always true |
| # tmp3 = tmp2[0]; |
| # else |
| # discard; |
| # |
| # tmp = vec4(tmp3); |
| # return 1; |
| # } |
| # |
| # void main() |
| # { |
| # if (func() == 1) |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); |
| # else |
| # _GLF_color = vec4(0.0, 0.0, 0.0, 1.0); |
| # } |
| SHADER fragment variant_fragment_shader SPIRV-ASM |
| ; SPIR-V |
| ; Version: 1.0 |
| ; Generator: Khronos Glslang Reference Front End; 8 |
| ; Bound: 54 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %49 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "func(" |
| OpName %13 "coord" |
| OpName %27 "tmp3" |
| OpName %30 "tmp2" |
| OpName %38 "tmp" |
| OpName %49 "_GLF_color" |
| OpDecorate %8 RelaxedPrecision |
| OpDecorate %44 RelaxedPrecision |
| OpDecorate %49 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypeFunction %6 |
| %10 = OpTypeFloat 32 |
| %11 = OpTypeVector %10 2 |
| %12 = OpTypePointer Function %11 |
| %14 = OpConstant %10 1 |
| %15 = OpConstantComposite %11 %14 %14 |
| %16 = OpTypeInt 32 0 |
| %17 = OpConstant %16 1 |
| %18 = OpTypePointer Function %10 |
| %22 = OpConstant %6 180 |
| %23 = OpTypeBool |
| %28 = OpTypeArray %10 %17 |
| %29 = OpTypePointer Function %28 |
| %31 = OpConstant %6 0 |
| %36 = OpTypeVector %10 4 |
| %37 = OpTypePointer Function %36 |
| %41 = OpConstant %6 1 |
| %48 = OpTypePointer Output %36 |
| %49 = OpVariable %48 Output |
| %50 = OpConstant %10 0 |
| %51 = OpConstantComposite %36 %14 %50 %50 %14 |
| %53 = OpConstantComposite %36 %50 %50 %50 %14 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %44 = OpFunctionCall %6 %8 |
| %45 = OpIEqual %23 %44 %41 |
| OpSelectionMerge %47 None |
| OpBranchConditional %45 %46 %52 |
| %46 = OpLabel |
| OpStore %49 %51 |
| OpBranch %47 |
| %52 = OpLabel |
| OpStore %49 %53 |
| OpBranch %47 |
| %47 = OpLabel |
| OpReturn |
| OpFunctionEnd |
| %8 = OpFunction %6 None %7 |
| %9 = OpLabel |
| %13 = OpVariable %12 Function |
| %27 = OpVariable %18 Function |
| %30 = OpVariable %29 Function |
| %38 = OpVariable %37 Function |
| OpStore %13 %15 |
| %19 = OpAccessChain %18 %13 %17 |
| %20 = OpLoad %10 %19 |
| %21 = OpConvertFToS %6 %20 |
| %24 = OpSLessThan %23 %21 %22 |
| OpSelectionMerge %26 None |
| OpBranchConditional %24 %25 %34 |
| %25 = OpLabel |
| %32 = OpAccessChain %18 %30 %31 |
| %33 = OpLoad %10 %32 |
| OpStore %27 %33 |
| OpBranch %26 |
| %34 = OpLabel |
| OpKill |
| %26 = OpLabel |
| %40 = OpCompositeConstruct %36 %33 %33 %33 %33 |
| OpStore %38 %40 |
| OpReturnValue %41 |
| 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 |