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 shader validation 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;
32 # layout(set = 0, binding = 0) uniform buf0
54 # _GLF_color = vec4(1, 0, 0, 1);
56 # _GLF_color = vec4(0);
58 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
61 ; Generator: Khronos Glslang Reference Front End; 8
65 %1 = OpExtInstImport "GLSL.std.450"
66 OpMemoryModel Logical GLSL450
67 OpEntryPoint Fragment %4 "main" %33
68 OpExecutionMode %4 OriginUpperLeft
73 OpMemberName %10 0 "one"
75 OpName %33 "_GLF_color"
76 OpMemberDecorate %10 0 Offset 0
78 OpDecorate %12 DescriptorSet 0
79 OpDecorate %12 Binding 0
80 OpDecorate %33 Location 0
82 %3 = OpTypeFunction %2
84 %7 = OpTypePointer Function %6
87 %11 = OpTypePointer Uniform %10
88 %12 = OpVariable %11 Uniform
89 %13 = OpTypePointer Uniform %6
94 %31 = OpTypeVector %30 4
95 %32 = OpTypePointer Output %31
96 %33 = OpVariable %32 Output
97 %34 = OpConstant %30 1
98 %35 = OpConstant %30 0
99 %36 = OpConstantComposite %31 %34 %35 %35 %34
100 %38 = OpConstantComposite %31 %35 %35 %35 %35
101 %4 = OpFunction %2 None %3
103 %8 = OpVariable %7 Function
105 %14 = OpAccessChain %13 %12 %9
107 OpSelectionMerge %19 None
108 OpSwitch %15 %18 2 %16 3 %16 4 %17
119 %27 = OpIEqual %26 %25 %22
120 OpSelectionMerge %29 None
121 OpBranchConditional %27 %28 %37
133 # uniforms for variant
136 BUFFER variant_one DATA_TYPE int32 DATA
140 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
142 PIPELINE graphics variant_pipeline
143 ATTACH variant_vertex_shader
144 ATTACH variant_fragment_shader
145 FRAMEBUFFER_SIZE 256 256
146 BIND BUFFER variant_framebuffer AS color LOCATION 0
147 BIND BUFFER variant_one AS uniform DESCRIPTOR_SET 0 BINDING 0
149 CLEAR_COLOR variant_pipeline 0 0 0 255
151 CLEAR variant_pipeline
152 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
154 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255