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 types optimization path.
22 # The test passes because shader always writes red.
24 # Optimized using spirv-opt with the following arguments:
25 # '--eliminate-dead-branches'
27 # '--scalar-replacement=100'
28 # '--scalar-replacement=100'
29 # '--inline-entry-points-exhaustive'
30 # '--private-to-local'
31 # '--eliminate-local-single-block'
32 # '--eliminate-dead-branches'
34 # '--combine-access-chains'
35 # '--eliminate-dead-branches'
36 # '--redundancy-elimination'
37 # '--simplify-instructions'
38 # '--private-to-local'
39 # '--private-to-local'
40 # spirv-opt commit hash: 9215c1b7df0029f27807e8c8d7ec80532ce90a87
44 SHADER vertex variant_vertex_shader PASSTHROUGH
46 # variant_fragment_shader is derived from the following GLSL:
48 # precision highp float;
49 # precision highp int;
51 # layout(location = 0) out vec4 _GLF_color;
52 # layout(set = 0, binding = 0) uniform buf0
59 # return vec4(1, 0, 0, 1);
64 # _GLF_color = vec4(0);
66 # if(one == 0) // Always false.
69 # _GLF_color = func();
71 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
74 ; Generator: Khronos Glslang Reference Front End; 8
78 %1 = OpExtInstImport "GLSL.std.450"
79 OpMemoryModel Logical GLSL450
80 OpEntryPoint Fragment %4 "main" %17
81 OpExecutionMode %4 OriginUpperLeft
85 OpName %17 "_GLF_color"
87 OpMemberName %20 0 "one"
89 OpDecorate %17 Location 0
90 OpMemberDecorate %20 0 Offset 0
92 OpDecorate %22 DescriptorSet 0
93 OpDecorate %22 Binding 0
95 %3 = OpTypeFunction %2
97 %7 = OpTypeVector %6 4
98 %8 = OpTypeFunction %7
100 %12 = OpConstant %6 0
101 %13 = OpConstantComposite %7 %11 %12 %12 %11
102 %16 = OpTypePointer Output %7
103 %17 = OpVariable %16 Output
104 %18 = OpConstantComposite %7 %12 %12 %12 %12
106 %20 = OpTypeStruct %19
107 %21 = OpTypePointer Uniform %20
108 %22 = OpVariable %21 Uniform
109 %23 = OpConstant %19 0
110 %24 = OpTypePointer Uniform %19
112 %33 = OpTypePointer Function %7
113 %4 = OpFunction %2 None %3
115 %34 = OpVariable %33 Function
117 %25 = OpAccessChain %24 %22 %23
119 %28 = OpIEqual %27 %26 %23
120 OpSelectionMerge %30 None
121 OpBranchConditional %28 %29 %30
129 %9 = OpFunction %7 None %8
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