208 lines
6.1 KiB
Plaintext
208 lines
6.1 KiB
Plaintext
#!amber
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# Copyright 2019 Google LLC
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# A test for a bug found by GraphicsFuzz.
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# Short description: Fragment shader with struct and unreachable infinite loop
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# The test passes because 'tree[0].rightIndex' is set to 1, so that the infinite loop is not reached and the output colour red is written
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# Optimized using spirv-opt with the following arguments:
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# '--redundancy-elimination'
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# '--eliminate-dead-inserts'
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# '--combine-access-chains'
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# '--vector-dce'
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# '--vector-dce'
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# '--eliminate-dead-branches'
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# '--merge-return'
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# '--private-to-local'
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# '--simplify-instructions'
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# '--simplify-instructions'
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# '--eliminate-dead-branches'
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# '--merge-blocks'
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# '--eliminate-local-multi-store'
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# '--eliminate-local-single-store'
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# '--eliminate-local-single-block'
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# '--simplify-instructions'
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# '--copy-propagate-arrays'
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# '--vector-dce'
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# '--simplify-instructions'
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# '--reduce-load-size'
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# '--vector-dce'
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# '--eliminate-dead-branches'
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# '--merge-return'
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# '--redundancy-elimination'
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# '--simplify-instructions'
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# '--eliminate-dead-branches'
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# '--private-to-local'
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# '--vector-dce'
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# '--convert-local-access-chains'
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# '--eliminate-dead-branches'
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# '--merge-blocks'
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# '--private-to-local'
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# '--private-to-local'
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# spirv-opt commit hash: 6b072126595dd8c2448eb1fda616251c5e6d7079
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SHADER vertex variant_vertex_shader PASSTHROUGH
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# variant_fragment_shader is derived from the following GLSL:
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# #version 310 es
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# precision highp float;
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#
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# struct BST {
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# int data;
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# int leftIndex;
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# int rightIndex;
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# } ;
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#
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# BST tree[10];
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#
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# layout(location = 0) out vec4 _GLF_color;
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#
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# void makeTreeNode(inout BST tree)
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# {
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# tree.rightIndex = 1;
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# }
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# void main()
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# {
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# makeTreeNode(tree[0]);
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# if (tree[0].rightIndex == 0) {
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# while(true)
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# {
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# }
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# }
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#
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# _GLF_color = vec4(float(tree[0].rightIndex), 0.0, 0.0, 1.0);
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#
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# }
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SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
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; SPIR-V
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; Version: 1.0
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; Generator: Khronos Glslang Reference Front End; 7
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; Bound: 59
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; Schema: 0
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OpCapability Shader
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%1 = OpExtInstImport "GLSL.std.450"
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OpMemoryModel Logical GLSL450
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OpEntryPoint Fragment %4 "main" %46
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 310
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OpName %4 "main"
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OpName %7 "BST"
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OpMemberName %7 0 "data"
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OpMemberName %7 1 "leftIndex"
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OpMemberName %7 2 "rightIndex"
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OpName %11 "makeTreeNode(struct-BST-i1-i1-i11;"
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OpName %10 "tree"
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OpName %21 "tree"
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OpName %23 "param"
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OpName %46 "_GLF_color"
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OpMemberDecorate %7 0 RelaxedPrecision
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OpMemberDecorate %7 1 RelaxedPrecision
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OpMemberDecorate %7 2 RelaxedPrecision
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OpDecorate %32 RelaxedPrecision
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OpDecorate %46 Location 0
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OpDecorate %48 RelaxedPrecision
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OpDecorate %57 RelaxedPrecision
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OpDecorate %58 RelaxedPrecision
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%2 = OpTypeVoid
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%3 = OpTypeFunction %2
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%6 = OpTypeInt 32 1
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%7 = OpTypeStruct %6 %6 %6
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%8 = OpTypePointer Function %7
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%9 = OpTypeFunction %2 %8
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%13 = OpConstant %6 2
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%14 = OpConstant %6 1
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%15 = OpTypePointer Function %6
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%17 = OpTypeInt 32 0
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%18 = OpConstant %17 10
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%19 = OpTypeArray %7 %18
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%20 = OpTypePointer Private %19
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%22 = OpConstant %6 0
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%24 = OpTypePointer Private %7
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%30 = OpTypePointer Private %6
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%33 = OpTypeBool
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%42 = OpConstantTrue %33
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%43 = OpTypeFloat 32
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%44 = OpTypeVector %43 4
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%45 = OpTypePointer Output %44
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%46 = OpVariable %45 Output
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%50 = OpConstant %43 0
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%51 = OpConstant %43 1
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%53 = OpTypePointer Function %19
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%21 = OpVariable %53 Function
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%23 = OpVariable %8 Function
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%54 = OpLoad %19 %21
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%26 = OpCompositeExtract %7 %54 0
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OpStore %23 %26
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%27 = OpFunctionCall %2 %11 %23
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%28 = OpLoad %7 %23
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%55 = OpLoad %19 %21
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%56 = OpCompositeInsert %19 %28 %55 0
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OpStore %21 %56
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%31 = OpAccessChain %15 %21 %22 %13
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%57 = OpLoad %19 %21
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%32 = OpCompositeExtract %6 %57 0 2
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%34 = OpIEqual %33 %32 %22
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OpSelectionMerge %36 None
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OpBranchConditional %34 %35 %36
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%35 = OpLabel
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OpBranch %37
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%37 = OpLabel
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OpLoopMerge %39 %37 None
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OpBranch %37
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%39 = OpLabel
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OpUnreachable
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%36 = OpLabel
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%58 = OpLoad %19 %21
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%48 = OpCompositeExtract %6 %58 0 2
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%49 = OpConvertSToF %43 %48
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%52 = OpCompositeConstruct %44 %49 %50 %50 %51
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OpStore %46 %52
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OpReturn
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OpFunctionEnd
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%11 = OpFunction %2 None %9
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%10 = OpFunctionParameter %8
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%12 = OpLabel
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%16 = OpAccessChain %15 %10 %13
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OpStore %16 %14
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OpReturn
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OpFunctionEnd
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END
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# uniforms for variant
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BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
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PIPELINE graphics variant_pipeline
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ATTACH variant_vertex_shader
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ATTACH variant_fragment_shader
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FRAMEBUFFER_SIZE 256 256
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BIND BUFFER variant_framebuffer AS color LOCATION 0
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END
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CLEAR_COLOR variant_pipeline 0 0 0 255
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CLEAR variant_pipeline
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RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
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EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
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