300 lines
8.7 KiB
Plaintext
300 lines
8.7 KiB
Plaintext
#!amber
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# Copyright 2020 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 the GraphicsFuzz project.
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# Short description: A fragment shader with recurrent always false if statement
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# The test passes because the shader always writes color red.
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# Optimized using spirv-opt with the following arguments:
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# '--vector-dce'
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# '--vector-dce'
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# '--scalar-replacement=100'
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# '--redundancy-elimination'
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# '--redundancy-elimination'
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# '--eliminate-dead-branches'
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# '--eliminate-dead-branches'
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# '--merge-blocks'
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# '--scalar-replacement=100'
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# '--reduce-load-size'
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# '--copy-propagate-arrays'
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# '--eliminate-dead-branches'
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# '--merge-blocks'
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# '--eliminate-dead-code-aggressive'
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# '--inline-entry-points-exhaustive'
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# '--simplify-instructions'
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# '--redundancy-elimination'
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# '--ccp'
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# '--eliminate-local-single-block'
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# '--scalar-replacement=100'
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# '--reduce-load-size'
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# '--eliminate-local-single-block'
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# '--reduce-load-size'
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# '--eliminate-local-single-store'
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# '--inline-entry-points-exhaustive'
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# spirv-opt commit hash: 230f363e6da32791f640b02205e0645cc67c3f1d
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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 320 es
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# precision highp float;
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#
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# precision highp int;
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#
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#
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# layout(location = 0) out vec4 _GLF_color;
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#
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# layout(set = 0, binding = 0) uniform buf0
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# {
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# vec2 injectionSwitch; // x == 0.0, y == 1.0
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# };
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# void main()
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# {
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# const int loop_limit = 100;
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# int loop_count = 0;
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# // Always false.
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# if (injectionSwitch.x > injectionSwitch.y)
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# {
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# return;
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# }
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# // Always false.
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# gl_FragCoord.x < log(1.0);
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# for (; loop_count < loop_limit; loop_count++)
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# {
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# // Always false.
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# if (injectionSwitch.x > injectionSwitch.y)
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# {
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# break;
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# }
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# // Always false.
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# if (injectionSwitch.x > injectionSwitch.y)
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# {
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# _GLF_color = vec4(1.0);
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# }
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# else
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# {
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# // Always false.
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# if (gl_FragCoord.x < 0.0)
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# {
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# return;
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# }
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# }
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# // Always false.
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# if (injectionSwitch.x > injectionSwitch.y)
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# {
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# _GLF_color = vec4(1.0);
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# }
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# else
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# {
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# _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
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# }
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# // Always false.
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# if (injectionSwitch.x > injectionSwitch.y)
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# {
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# return;
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# }
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# // Always false.
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# if (gl_FragCoord.x < 0.0)
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# {
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# for (; loop_count < loop_limit; loop_count++)
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# {
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# }
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# }
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# }
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# if(loop_count >= loop_limit)
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# {
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# _GLF_color = vec4(1.0, 0.0, 0.0, 1.0);
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# }
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# else
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# {
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# _GLF_color = vec4(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; 10
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; Bound: 109
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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" %30 %60
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OpExecutionMode %4 OriginUpperLeft
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OpSource ESSL 320
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OpName %4 "main"
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OpName %8 "loop_count"
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OpName %12 "buf0"
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OpMemberName %12 0 "injectionSwitch"
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OpName %14 ""
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OpName %30 "gl_FragCoord"
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OpName %60 "_GLF_color"
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OpMemberDecorate %12 0 Offset 0
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OpDecorate %12 Block
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OpDecorate %14 DescriptorSet 0
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OpDecorate %14 Binding 0
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OpDecorate %30 BuiltIn FragCoord
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OpDecorate %60 Location 0
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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 = OpTypePointer Function %6
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%9 = OpConstant %6 0
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%10 = OpTypeFloat 32
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%11 = OpTypeVector %10 2
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%12 = OpTypeStruct %11
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%13 = OpTypePointer Uniform %12
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%14 = OpVariable %13 Uniform
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%15 = OpTypeInt 32 0
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%16 = OpConstant %15 0
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%17 = OpTypePointer Uniform %10
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%20 = OpConstant %15 1
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%23 = OpTypeBool
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%28 = OpTypeVector %10 4
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%29 = OpTypePointer Input %28
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%30 = OpVariable %29 Input
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%31 = OpTypePointer Input %10
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%34 = OpConstant %10 0
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%42 = OpConstant %6 100
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%59 = OpTypePointer Output %28
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%60 = OpVariable %59 Output
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%61 = OpConstant %10 1
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%62 = OpConstantComposite %28 %61 %61 %61 %61
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%78 = OpConstantComposite %28 %61 %34 %34 %61
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%100 = OpConstant %6 1
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%4 = OpFunction %2 None %3
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%5 = OpLabel
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%8 = OpVariable %7 Function
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OpStore %8 %9
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%18 = OpAccessChain %17 %14 %9 %16
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%19 = OpLoad %10 %18
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%21 = OpAccessChain %17 %14 %9 %20
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%22 = OpLoad %10 %21
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%24 = OpFOrdGreaterThan %23 %19 %22
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OpSelectionMerge %26 None
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OpBranchConditional %24 %25 %26
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%25 = OpLabel
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OpReturn
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%26 = OpLabel
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%32 = OpAccessChain %31 %30 %16
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%33 = OpLoad %10 %32
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%35 = OpFOrdLessThan %23 %33 %34
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OpBranch %36
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%36 = OpLabel
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%41 = OpLoad %6 %8
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%43 = OpSLessThan %23 %41 %42
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OpLoopMerge %38 %39 None
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OpBranchConditional %43 %37 %38
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%37 = OpLabel
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OpSelectionMerge %50 None
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OpBranchConditional %24 %49 %50
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%49 = OpLabel
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OpBranch %38
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%50 = OpLabel
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OpSelectionMerge %58 None
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OpBranchConditional %24 %57 %63
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%57 = OpLabel
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OpStore %60 %62
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OpBranch %58
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%63 = OpLabel
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OpSelectionMerge %68 None
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OpBranchConditional %35 %67 %68
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%67 = OpLabel
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OpReturn
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%68 = OpLabel
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OpBranch %58
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%58 = OpLabel
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OpSelectionMerge %76 None
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OpBranchConditional %24 %75 %77
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%75 = OpLabel
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OpStore %60 %62
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OpBranch %76
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%77 = OpLabel
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OpStore %60 %78
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OpBranch %76
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%76 = OpLabel
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OpSelectionMerge %85 None
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OpBranchConditional %24 %84 %85
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%84 = OpLabel
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OpReturn
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%85 = OpLabel
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OpSelectionMerge %91 None
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OpBranchConditional %35 %90 %91
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%90 = OpLabel
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OpBranch %92
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%92 = OpLabel
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%97 = OpLoad %6 %8
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%98 = OpSLessThan %23 %97 %42
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OpLoopMerge %94 %93 None
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OpBranchConditional %98 %93 %94
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%93 = OpLabel
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%99 = OpLoad %6 %8
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%101 = OpIAdd %6 %99 %100
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OpStore %8 %101
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OpBranch %92
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%94 = OpLabel
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OpBranch %91
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%91 = OpLabel
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OpBranch %39
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%39 = OpLabel
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%102 = OpLoad %6 %8
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%103 = OpIAdd %6 %102 %100
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OpStore %8 %103
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OpBranch %36
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%38 = OpLabel
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%104 = OpLoad %6 %8
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%105 = OpSGreaterThanEqual %23 %104 %42
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OpSelectionMerge %107 None
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OpBranchConditional %105 %106 %108
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%106 = OpLabel
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OpStore %60 %78
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OpBranch %107
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%108 = OpLabel
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OpStore %60 %62
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OpBranch %107
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%107 = OpLabel
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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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# injectionSwitch
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BUFFER variant_injectionSwitch DATA_TYPE vec2<float> STD140 DATA
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0.0 1.0
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END
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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 16 16
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BIND BUFFER variant_framebuffer AS color LOCATION 0
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BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 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 16 16
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EXPECT variant_framebuffer IDX 0 0 SIZE 16 16 EQ_RGBA 255 0 0 255
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