180 lines
5.5 KiB
Plaintext
180 lines
5.5 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 coverage-gap found by the GraphicsFuzz project.
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# Short description: Covers specific DAG combiner and legalize vector ops code paths
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# The test passes because the shader always writes red.
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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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# #define _int_1 _GLF_uniform_int_values[0]
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# #define _int_0 _GLF_uniform_int_values[1]
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#
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# precision highp int;
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#
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# precision highp float;
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#
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# // Contents of _GLF_uniform_int_values: [1, 0]
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# layout(set = 0, binding = 0) uniform buf0
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# {
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# int _GLF_uniform_int_values[2];
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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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# void main()
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# {
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# // a becomes -2147483648.
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# int a = bitfieldReverse(1);
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#
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# // a is negative therefore this results in an undefined value, but not in undefined behavior.
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# int b = 1 << a;
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#
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# int c = findMSB(b);
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#
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# _GLF_color = vec4(c);
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#
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# if (a == -2147483648)
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# {
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# _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
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# }
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# else
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# {
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# _GLF_color = vec4(_int_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: 56
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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" %20
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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 %8 "a"
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OpName %11 "b"
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OpName %14 "c"
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OpName %20 "_GLF_color"
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OpName %33 "buf0"
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OpMemberName %33 0 "_GLF_uniform_int_values"
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OpName %35 ""
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OpDecorate %20 Location 0
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OpDecorate %32 ArrayStride 16
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OpMemberDecorate %33 0 Offset 0
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OpDecorate %33 Block
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OpDecorate %35 DescriptorSet 0
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OpDecorate %35 Binding 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 1
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%17 = OpTypeFloat 32
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%18 = OpTypeVector %17 4
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%19 = OpTypePointer Output %18
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%20 = OpVariable %19 Output
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%25 = OpConstant %6 -2147483648
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%26 = OpTypeBool
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%30 = OpTypeInt 32 0
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%31 = OpConstant %30 2
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%32 = OpTypeArray %6 %31
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%33 = OpTypeStruct %32
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%34 = OpTypePointer Uniform %33
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%35 = OpVariable %34 Uniform
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%36 = OpConstant %6 0
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%37 = OpTypePointer Uniform %6
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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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%11 = OpVariable %7 Function
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%14 = OpVariable %7 Function
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%10 = OpBitReverse %6 %9
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OpStore %8 %10
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%12 = OpLoad %6 %8
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%13 = OpShiftLeftLogical %6 %9 %12
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OpStore %11 %13
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%15 = OpLoad %6 %11
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%16 = OpExtInst %6 %1 FindSMsb %15
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OpStore %14 %16
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%21 = OpLoad %6 %14
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%22 = OpConvertSToF %17 %21
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%23 = OpCompositeConstruct %18 %22 %22 %22 %22
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OpStore %20 %23
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%24 = OpLoad %6 %8
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%27 = OpIEqual %26 %24 %25
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OpSelectionMerge %29 None
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OpBranchConditional %27 %28 %51
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%28 = OpLabel
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%38 = OpAccessChain %37 %35 %36 %36
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%39 = OpLoad %6 %38
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%40 = OpConvertSToF %17 %39
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%41 = OpAccessChain %37 %35 %36 %9
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%42 = OpLoad %6 %41
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%43 = OpConvertSToF %17 %42
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%44 = OpAccessChain %37 %35 %36 %9
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%45 = OpLoad %6 %44
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%46 = OpConvertSToF %17 %45
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%47 = OpAccessChain %37 %35 %36 %36
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%48 = OpLoad %6 %47
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%49 = OpConvertSToF %17 %48
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%50 = OpCompositeConstruct %18 %40 %43 %46 %49
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OpStore %20 %50
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OpBranch %29
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%51 = OpLabel
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%52 = OpAccessChain %37 %35 %36 %9
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%53 = OpLoad %6 %52
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%54 = OpConvertSToF %17 %53
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%55 = OpCompositeConstruct %18 %54 %54 %54 %54
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OpStore %20 %55
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OpBranch %29
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%29 = 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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# _GLF_uniform_int_values
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BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
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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 256 256
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BIND BUFFER variant_framebuffer AS color LOCATION 0
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BIND BUFFER variant__GLF_uniform_int_values 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 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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