Attachment 144707 Details for Bug 111071 – Amber test exposing the problem

Amber test exposing the problem

nested-ifs-and-return-in-for-loop.amber (text/plain), 4.52 KB, created by Alastair Donaldson on 2019-07-04 23:01:05 UTC

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Creator: Alastair Donaldson

Created: 2019-07-04 23:01:05 UTC

Size: 4.52 KB

patch

obsolete

># 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 return in nest of ifs, inside loop
>
># The test passes because the fragment shader writes a red pixel, and then
># terminates without further output manipulation (the other write of red
># is not dynamically reachable)
>
># Derived from the following GLSL.
>
># Fragment shader GLSL:
># #version 310 es
>#
># precision highp float;
>#
># layout(location = 0) out vec4 _GLF_color;
>#
># layout(set = 0, binding = 0) uniform buf0 {
>#  vec2 injectionSwitch;
># };
>#
># void main()
># {
>#  _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
>#  for(
>#      int i = 0;
>#      i < 10;
>#      i ++
>#  )
>#   {
>#    _GLF_color = vec4(1.0);
>#    if(1.0 > injectionSwitch.y)
>#     {
>#      _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
>#      if(true)
>#       {
>#        return;
>#       }
>#     }
>#   }
># }
>
>[require]
>fbsize 256 256
>
>[vertex shader passthrough]
>
>[fragment shader spirv]
>; SPIR-V
>; Version: 1.0
>; Generator: Khronos Glslang Reference Front End; 7
>; Bound: 46
>; Schema: 0
>               OpCapability Shader
>          %1 = OpExtInstImport "GLSL.std.450"
>               OpMemoryModel Logical GLSL450
>               OpEntryPoint Fragment %4 "main" %9
>               OpExecutionMode %4 OriginUpperLeft
>               OpSource ESSL 310
>               OpName %4 "main"
>               OpName %9 "_GLF_color"
>               OpName %15 "i"
>               OpName %28 "buf0"
>               OpMemberName %28 0 "injectionSwitch"
>               OpName %30 ""
>               OpDecorate %9 Location 0
>               OpDecorate %15 RelaxedPrecision
>               OpDecorate %22 RelaxedPrecision
>               OpMemberDecorate %28 0 Offset 0
>               OpDecorate %28 Block
>               OpDecorate %30 DescriptorSet 0
>               OpDecorate %30 Binding 0
>               OpDecorate %43 RelaxedPrecision
>               OpDecorate %45 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 = OpTypeInt 32 1
>         %14 = OpTypePointer Function %13
>         %16 = OpConstant %13 0
>         %23 = OpConstant %13 10
>         %24 = OpTypeBool
>         %26 = OpConstantComposite %7 %10 %10 %10 %10
>         %27 = OpTypeVector %6 2
>         %28 = OpTypeStruct %27
>         %29 = OpTypePointer Uniform %28
>         %30 = OpVariable %29 Uniform
>         %31 = OpTypeInt 32 0
>         %32 = OpConstant %31 1
>         %33 = OpTypePointer Uniform %6
>         %39 = OpConstantTrue %24
>         %44 = OpConstant %13 1
>          %4 = OpFunction %2 None %3
>          %5 = OpLabel
>         %15 = OpVariable %14 Function
>               OpStore %9 %12
>               OpStore %15 %16
>               OpBranch %17
>         %17 = OpLabel
>               OpLoopMerge %19 %20 None
>               OpBranch %21
>         %21 = OpLabel
>         %22 = OpLoad %13 %15
>         %25 = OpSLessThan %24 %22 %23
>               OpBranchConditional %25 %18 %19
>         %18 = OpLabel
>               OpStore %9 %26
>         %34 = OpAccessChain %33 %30 %16 %32
>         %35 = OpLoad %6 %34
>         %36 = OpFOrdGreaterThan %24 %10 %35
>               OpSelectionMerge %38 None
>               OpBranchConditional %36 %37 %38
>         %37 = OpLabel
>               OpStore %9 %12
>               OpSelectionMerge %41 None
>               OpBranchConditional %39 %40 %41
>         %40 = OpLabel
>               OpReturn
>         %41 = OpLabel
>               OpBranch %38
>         %38 = OpLabel
>               OpBranch %20
>         %20 = OpLabel
>         %43 = OpLoad %13 %15
>         %45 = OpIAdd %13 %43 %44
>               OpStore %15 %45
>               OpBranch %17
>         %19 = OpLabel
>               OpReturn
>               OpFunctionEnd
>
>
>[test]
>## Uniforms
># injectionSwitch
>uniform ubo 0:0 vec2 0 0.0 1.0
>
>draw rect -1 -1 2 2
>probe rgba (0, 0) (1, 0, 0, 1)

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Attachments on bug 111071: 144707 | 144710 | 144756

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