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 pattern matching path.
22 # The test passes because 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;
29 # precision highp int;
31 # layout(location = 0) out vec4 _GLF_color;
33 # layout(set = 0, binding = 0) uniform buf0
50 # _GLF_color = vec4(1, 0, 0, 1);
52 # _GLF_color = vec4(0);
54 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
57 ; Generator: Khronos Glslang Reference Front End; 8
61 %1 = OpExtInstImport "GLSL.std.450"
62 OpMemoryModel Logical GLSL450
63 OpEntryPoint Fragment %4 "main" %39
64 OpExecutionMode %4 OriginUpperLeft
70 OpMemberName %12 0 "one"
73 OpName %39 "_GLF_color"
74 OpMemberDecorate %12 0 Offset 0
76 OpDecorate %14 DescriptorSet 0
77 OpDecorate %14 Binding 0
78 OpDecorate %39 Location 0
80 %3 = OpTypeFunction %2
82 %7 = OpTypePointer Function %6
83 %8 = OpTypeFunction %6 %7
85 %13 = OpTypePointer Uniform %12
86 %14 = OpVariable %13 Uniform
88 %16 = OpTypePointer Uniform %6
91 %30 = OpConstant %6 -1
93 %37 = OpTypeVector %36 4
94 %38 = OpTypePointer Output %37
95 %39 = OpVariable %38 Output
96 %40 = OpConstant %36 1
97 %41 = OpConstant %36 0
98 %42 = OpConstantComposite %37 %40 %41 %41 %40
99 %44 = OpConstantComposite %37 %41 %41 %41 %41
100 %4 = OpFunction %2 None %3
102 %31 = OpVariable %7 Function
104 %32 = OpFunctionCall %6 %10 %31
105 %33 = OpSLessThanEqual %20 %32 %15
106 OpSelectionMerge %35 None
107 OpBranchConditional %33 %34 %43
117 %10 = OpFunction %6 None %8
118 %9 = OpFunctionParameter %7
120 %17 = OpAccessChain %16 %14 %15
122 %21 = OpIEqual %20 %18 %19
123 OpSelectionMerge %23 None
124 OpBranchConditional %21 %22 %23
129 %26 = OpAccessChain %16 %14 %15
135 # uniforms for variant
138 BUFFER variant_one DATA_TYPE int32 DATA
142 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
144 PIPELINE graphics variant_pipeline
145 ATTACH variant_vertex_shader
146 ATTACH variant_fragment_shader
147 FRAMEBUFFER_SIZE 256 256
148 BIND BUFFER variant_framebuffer AS color LOCATION 0
149 BIND BUFFER variant_one AS uniform DESCRIPTOR_SET 0 BINDING 0
151 CLEAR_COLOR variant_pipeline 0 0 0 255
153 CLEAR variant_pipeline
154 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
156 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255