Attachment 144702 Details for Bug 111069 – Amber test exposing the problem

Amber test exposing the problem

do-while-loop-in-conditionals.amber (text/plain), 3.37 KB, created by Alastair Donaldson on 2019-07-04 13:47:41 UTC

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Creator: Alastair Donaldson

Created: 2019-07-04 13:47:41 UTC

Size: 3.37 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 do-while loop in conditional nest
>
># The test passes because the fragment shader writes a red pixel, and the
># do-while loop 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;
>#
># void main()
># {
>#  _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
>#  if(true)
>#   {
>#    if(gl_FragCoord.x < 0.0)
>#     {
>#      do
>#       {
>#        _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
>#       }
>#      while(gl_FragCoord.x < 0.0);
>#     }
>#   }
># }
>
>[require]
>fbsize 256 256
>
>[vertex shader passthrough]
>
>[fragment shader spirv]
>; SPIR-V
>; Version: 1.0
>; Generator: Khronos Glslang Reference Front End; 7
>; Bound: 34
>; Schema: 0
>               OpCapability Shader
>          %1 = OpExtInstImport "GLSL.std.450"
>               OpMemoryModel Logical GLSL450
>               OpEntryPoint Fragment %4 "main" %9 %18
>               OpExecutionMode %4 OriginUpperLeft
>               OpSource ESSL 310
>               OpName %4 "main"
>               OpName %9 "_GLF_color"
>               OpName %18 "gl_FragCoord"
>               OpDecorate %9 Location 0
>               OpDecorate %18 BuiltIn FragCoord
>          %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 = OpTypeBool
>         %14 = OpConstantTrue %13
>         %17 = OpTypePointer Input %7
>         %18 = OpVariable %17 Input
>         %19 = OpTypeInt 32 0
>         %20 = OpConstant %19 0
>         %21 = OpTypePointer Input %6
>          %4 = OpFunction %2 None %3
>          %5 = OpLabel
>               OpStore %9 %12
>               OpSelectionMerge %16 None
>               OpBranchConditional %14 %15 %16
>         %15 = OpLabel
>         %22 = OpAccessChain %21 %18 %20
>         %23 = OpLoad %6 %22
>         %24 = OpFOrdLessThan %13 %23 %11
>               OpSelectionMerge %26 None
>               OpBranchConditional %24 %25 %26
>         %25 = OpLabel
>               OpBranch %27
>         %27 = OpLabel
>               OpLoopMerge %29 %30 None
>               OpBranch %28
>         %28 = OpLabel
>               OpStore %9 %12
>               OpBranch %30
>         %30 = OpLabel
>         %31 = OpAccessChain %21 %18 %20
>         %32 = OpLoad %6 %31
>         %33 = OpFOrdLessThan %13 %32 %11
>               OpBranchConditional %33 %27 %29
>         %29 = OpLabel
>               OpBranch %26
>         %26 = OpLabel
>               OpBranch %16
>         %16 = OpLabel
>               OpReturn
>               OpFunctionEnd
>
>
>[test]
>draw rect -1 -1 2 2
>probe rgba (0, 0) (1, 0, 0, 1)

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Attachments on bug 111069: 144702 | 144705

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