3 # Copyright 2021 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 the GraphicsFuzz project.
20 # Short description: A fragment shader that covers specific LLVM code paths
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 # #define _int_1 _GLF_uniform_int_values[0]
29 # #define _int_0 _GLF_uniform_int_values[1]
31 # precision highp int;
32 # precision highp float;
34 # // Contents of _GLF_uniform_int_values: [1, 0]
35 # layout(set = 0, binding = 0) uniform buf0
37 # int _GLF_uniform_int_values[2];
40 # layout(location = 0) out vec4 _GLF_color;
45 # if (bitfieldExtract(3, 1, 2) == 1)
47 # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
51 # _GLF_color = vec4(_int_0);
54 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
57 ; Generator: Khronos Glslang Reference Front End; 10
61 %1 = OpExtInstImport "GLSL.std.450"
62 OpMemoryModel Logical GLSL450
63 OpEntryPoint Fragment %4 "main" %18
64 OpExecutionMode %4 OriginUpperLeft
67 OpName %18 "_GLF_color"
69 OpMemberName %22 0 "_GLF_uniform_int_values"
71 OpDecorate %18 Location 0
72 OpDecorate %21 ArrayStride 16
73 OpMemberDecorate %22 0 Offset 0
75 OpDecorate %24 DescriptorSet 0
76 OpDecorate %24 Binding 0
78 %3 = OpTypeFunction %2
85 %16 = OpTypeVector %15 4
86 %17 = OpTypePointer Output %16
87 %18 = OpVariable %17 Output
89 %20 = OpConstant %19 2
90 %21 = OpTypeArray %6 %20
91 %22 = OpTypeStruct %21
92 %23 = OpTypePointer Uniform %22
93 %24 = OpVariable %23 Uniform
95 %26 = OpTypePointer Uniform %6
96 %4 = OpFunction %2 None %3
98 %10 = OpBitFieldSExtract %6 %7 %8 %9
99 %12 = OpIEqual %11 %10 %8
100 OpSelectionMerge %14 None
101 OpBranchConditional %12 %13 %40
103 %27 = OpAccessChain %26 %24 %25 %25
105 %29 = OpConvertSToF %15 %28
106 %30 = OpAccessChain %26 %24 %25 %8
108 %32 = OpConvertSToF %15 %31
109 %33 = OpAccessChain %26 %24 %25 %8
111 %35 = OpConvertSToF %15 %34
112 %36 = OpAccessChain %26 %24 %25 %25
114 %38 = OpConvertSToF %15 %37
115 %39 = OpCompositeConstruct %16 %29 %32 %35 %38
119 %41 = OpAccessChain %26 %24 %25 %8
121 %43 = OpConvertSToF %15 %42
122 %44 = OpCompositeConstruct %16 %43 %43 %43 %43
130 # uniforms for variant
132 # _GLF_uniform_int_values
133 BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
137 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
139 PIPELINE graphics variant_pipeline
140 ATTACH variant_vertex_shader
141 ATTACH variant_fragment_shader
142 FRAMEBUFFER_SIZE 256 256
143 BIND BUFFER variant_framebuffer AS color LOCATION 0
144 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
146 CLEAR_COLOR variant_pipeline 0 0 0 255
148 CLEAR variant_pipeline
149 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
151 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255