| #!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: An array-manipulating fragment shader with a discard |
| |
| # The test passes because the discard is not dynamically reachable, and |
| # data[0] ends up with the value 1.0 after the loop so that red is |
| # rendered |
| |
| 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() |
| # { |
| # float data[10] = float[](0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0); |
| # for(int i = 0; i < 10; i++) { |
| # if(gl_FragCoord.x < 0.0) { |
| # discard; |
| # } |
| # data[0] = data[i]; |
| # } |
| # _GLF_color = vec4(data[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: 61 |
| ; Schema: 0 |
| OpCapability Shader |
| %1 = OpExtInstImport "GLSL.std.450" |
| OpMemoryModel Logical GLSL450 |
| OpEntryPoint Fragment %4 "main" %38 %57 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %11 "data" |
| OpName %25 "i" |
| OpName %38 "gl_FragCoord" |
| OpName %57 "_GLF_color" |
| OpDecorate %25 RelaxedPrecision |
| OpDecorate %32 RelaxedPrecision |
| OpDecorate %38 BuiltIn FragCoord |
| OpDecorate %48 RelaxedPrecision |
| OpDecorate %53 RelaxedPrecision |
| OpDecorate %55 RelaxedPrecision |
| OpDecorate %57 Location 0 |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeFloat 32 |
| %7 = OpTypeInt 32 0 |
| %8 = OpConstant %7 10 |
| %9 = OpTypeArray %6 %8 |
| %10 = OpTypePointer Function %9 |
| %12 = OpConstant %6 0.100000001 |
| %13 = OpConstant %6 0.200000003 |
| %14 = OpConstant %6 0.300000012 |
| %15 = OpConstant %6 0.400000006 |
| %16 = OpConstant %6 0.5 |
| %17 = OpConstant %6 0.600000024 |
| %18 = OpConstant %6 0.699999988 |
| %19 = OpConstant %6 0.800000012 |
| %20 = OpConstant %6 0.899999976 |
| %21 = OpConstant %6 1 |
| %22 = OpConstantComposite %9 %12 %13 %14 %15 %16 %17 %18 %19 %20 %21 |
| %23 = OpTypeInt 32 1 |
| %24 = OpTypePointer Function %23 |
| %26 = OpConstant %23 0 |
| %33 = OpConstant %23 10 |
| %34 = OpTypeBool |
| %36 = OpTypeVector %6 4 |
| %37 = OpTypePointer Input %36 |
| %38 = OpVariable %37 Input |
| %39 = OpConstant %7 0 |
| %40 = OpTypePointer Input %6 |
| %43 = OpConstant %6 0 |
| %49 = OpTypePointer Function %6 |
| %54 = OpConstant %23 1 |
| %56 = OpTypePointer Output %36 |
| %57 = OpVariable %56 Output |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %11 = OpVariable %10 Function |
| %25 = OpVariable %24 Function |
| OpStore %11 %22 |
| OpStore %25 %26 |
| OpBranch %27 |
| %27 = OpLabel |
| OpLoopMerge %29 %30 None |
| OpBranch %31 |
| %31 = OpLabel |
| %32 = OpLoad %23 %25 |
| %35 = OpSLessThan %34 %32 %33 |
| OpBranchConditional %35 %28 %29 |
| %28 = OpLabel |
| %41 = OpAccessChain %40 %38 %39 |
| %42 = OpLoad %6 %41 |
| %44 = OpFOrdLessThan %34 %42 %43 |
| OpSelectionMerge %46 None |
| OpBranchConditional %44 %45 %46 |
| %45 = OpLabel |
| OpKill |
| %46 = OpLabel |
| %48 = OpLoad %23 %25 |
| %50 = OpAccessChain %49 %11 %48 |
| %51 = OpLoad %6 %50 |
| %52 = OpAccessChain %49 %11 %26 |
| OpStore %52 %51 |
| OpBranch %30 |
| %30 = OpLabel |
| %53 = OpLoad %23 %25 |
| %55 = OpIAdd %23 %53 %54 |
| OpStore %25 %55 |
| OpBranch %27 |
| %29 = OpLabel |
| %58 = OpAccessChain %49 %11 %26 |
| %59 = OpLoad %6 %58 |
| %60 = OpCompositeConstruct %36 %59 %43 %43 %21 |
| OpStore %57 %60 |
| 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 |