3 # Copyright 2020 Google LLC
5 # Licensed under the Apache License, Version 2.0 (the "License");
6 # you may not use this file except in compliance with the License.
7 # You may obtain a copy of the License at
9 # http://www.apache.org/licenses/LICENSE-2.0
11 # Unless required by applicable law or agreed to in writing, software
12 # distributed under the License is distributed on an "AS IS" BASIS,
13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 # See the License for the specific language governing permissions and
15 # limitations under the License.
18 # A test for a coverage-gap found by GraphicsFuzz.
20 # Short description: A fragment shader that covers a specific instruction simplification path
22 # The test passes because the shader always writes red.
24 SHADER vertex variant_vertex_shader PASSTHROUGH
26 # variant_fragment_shader is derived from the following GLSL:
28 # precision highp float;
30 # layout(location = 0) out vec4 _GLF_color;
31 # layout(set = 0, binding = 0) uniform buf0
38 # if (sign(cosh(709.)) == 1. || one == 1)
40 # _GLF_color = vec4(1, 0, 0, 1);
44 # _GLF_color = vec4(1);
47 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
50 ; Generator: Khronos Glslang Reference Front End; 8
54 %1 = OpExtInstImport "GLSL.std.450"
55 OpMemoryModel Logical GLSL450
56 OpEntryPoint Fragment %4 "main" %31
57 OpExecutionMode %4 OriginUpperLeft
61 OpMemberName %17 0 "one"
63 OpName %31 "_GLF_color"
64 OpMemberDecorate %17 0 RelaxedPrecision
65 OpMemberDecorate %17 0 Offset 0
67 OpDecorate %19 DescriptorSet 0
68 OpDecorate %19 Binding 0
69 OpDecorate %23 RelaxedPrecision
70 OpDecorate %31 Location 0
72 %3 = OpTypeFunction %2
75 %8 = OpConstant %7 709
78 %17 = OpTypeStruct %16
79 %18 = OpTypePointer Uniform %17
80 %19 = OpVariable %18 Uniform
81 %20 = OpConstant %16 0
82 %21 = OpTypePointer Uniform %16
83 %24 = OpConstant %16 1
84 %29 = OpTypeVector %7 4
85 %30 = OpTypePointer Output %29
86 %31 = OpVariable %30 Output
88 %33 = OpConstantComposite %29 %11 %32 %32 %11
89 %35 = OpConstantComposite %29 %11 %11 %11 %11
90 %4 = OpFunction %2 None %3
92 %9 = OpExtInst %7 %1 Cosh %8
93 %10 = OpExtInst %7 %1 FSign %9
94 %12 = OpFOrdEqual %6 %10 %11
95 %13 = OpLogicalNot %6 %12
96 OpSelectionMerge %15 None
97 OpBranchConditional %13 %14 %15
99 %22 = OpAccessChain %21 %19 %20
101 %25 = OpIEqual %6 %23 %24
104 %26 = OpPhi %6 %12 %5 %25 %14
105 OpSelectionMerge %28 None
106 OpBranchConditional %26 %27 %34
118 # uniforms for variant
121 BUFFER variant_one DATA_TYPE int32 DATA
125 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
127 PIPELINE graphics variant_pipeline
128 ATTACH variant_vertex_shader
129 ATTACH variant_fragment_shader
130 FRAMEBUFFER_SIZE 256 256
131 BIND BUFFER variant_framebuffer AS color LOCATION 0
132 BIND BUFFER variant_one AS uniform DESCRIPTOR_SET 0 BINDING 0
134 CLEAR_COLOR variant_pipeline 0 0 0 255
136 CLEAR variant_pipeline
137 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
139 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255