| #!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 containing nested ifs |
| |
| # The test passes because the two-iteration loop only writes red to the output color variable. |
| |
| 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() |
| # { |
| # for ( |
| # int j = 0; |
| # j < 2; |
| # j++) |
| # { |
| # if (j < 1) |
| # { |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); // red |
| # } |
| # if (j != 3) |
| # { |
| # if (j != 4) |
| # { |
| # if (j == 5) // always false |
| # { |
| # _GLF_color[0] = float(ldexp(1.0, 2)); |
| # } |
| # else |
| # { |
| # float a; |
| # a = float(ldexp(1.0, 2)); |
| # _GLF_color = vec4(1.0, 0.0, 0.0, 1.0); // red |
| # } |
| # } |
| # } |
| # } |
| # } |
| 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" %27 |
| OpExecutionMode %4 OriginUpperLeft |
| OpSource ESSL 310 |
| OpName %4 "main" |
| OpName %8 "j" |
| OpName %27 "_GLF_color" |
| OpName %53 "a" |
| OpDecorate %8 RelaxedPrecision |
| OpDecorate %15 RelaxedPrecision |
| OpDecorate %19 RelaxedPrecision |
| OpDecorate %27 Location 0 |
| OpDecorate %31 RelaxedPrecision |
| OpDecorate %36 RelaxedPrecision |
| OpDecorate %41 RelaxedPrecision |
| OpDecorate %55 RelaxedPrecision |
| OpDecorate %56 RelaxedPrecision |
| %2 = OpTypeVoid |
| %3 = OpTypeFunction %2 |
| %6 = OpTypeInt 32 1 |
| %7 = OpTypePointer Function %6 |
| %9 = OpConstant %6 0 |
| %16 = OpConstant %6 2 |
| %17 = OpTypeBool |
| %20 = OpConstant %6 1 |
| %24 = OpTypeFloat 32 |
| %25 = OpTypeVector %24 4 |
| %26 = OpTypePointer Output %25 |
| %27 = OpVariable %26 Output |
| %28 = OpConstant %24 1 |
| %29 = OpConstant %24 0 |
| %30 = OpConstantComposite %25 %28 %29 %29 %28 |
| %32 = OpConstant %6 3 |
| %37 = OpConstant %6 4 |
| %42 = OpConstant %6 5 |
| %47 = OpTypeInt 32 0 |
| %48 = OpConstant %47 0 |
| %49 = OpTypePointer Output %24 |
| %52 = OpTypePointer Function %24 |
| %4 = OpFunction %2 None %3 |
| %5 = OpLabel |
| %8 = OpVariable %7 Function |
| %53 = OpVariable %52 Function |
| OpStore %8 %9 |
| OpBranch %10 |
| %10 = OpLabel |
| OpLoopMerge %12 %13 None |
| OpBranch %14 |
| %14 = OpLabel |
| %15 = OpLoad %6 %8 |
| %18 = OpSLessThan %17 %15 %16 |
| OpBranchConditional %18 %11 %12 |
| %11 = OpLabel |
| %19 = OpLoad %6 %8 |
| %21 = OpSLessThan %17 %19 %20 |
| OpSelectionMerge %23 None |
| OpBranchConditional %21 %22 %23 |
| %22 = OpLabel |
| OpStore %27 %30 |
| OpBranch %23 |
| %23 = OpLabel |
| %31 = OpLoad %6 %8 |
| %33 = OpINotEqual %17 %31 %32 |
| OpSelectionMerge %35 None |
| OpBranchConditional %33 %34 %35 |
| %34 = OpLabel |
| %36 = OpLoad %6 %8 |
| %38 = OpINotEqual %17 %36 %37 |
| OpSelectionMerge %40 None |
| OpBranchConditional %38 %39 %40 |
| %39 = OpLabel |
| %41 = OpLoad %6 %8 |
| %43 = OpIEqual %17 %41 %42 |
| OpSelectionMerge %45 None |
| OpBranchConditional %43 %44 %51 |
| %44 = OpLabel |
| %46 = OpExtInst %24 %1 Ldexp %28 %16 |
| %50 = OpAccessChain %49 %27 %48 |
| OpStore %50 %46 |
| OpBranch %45 |
| %51 = OpLabel |
| %54 = OpExtInst %24 %1 Ldexp %28 %16 |
| OpStore %53 %54 |
| OpStore %27 %30 |
| OpBranch %45 |
| %45 = OpLabel |
| OpBranch %40 |
| %40 = OpLabel |
| OpBranch %35 |
| %35 = OpLabel |
| OpBranch %13 |
| %13 = OpLabel |
| %55 = OpLoad %6 %8 |
| %56 = OpIAdd %6 %55 %20 |
| OpStore %8 %56 |
| OpBranch %10 |
| %12 = 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 |