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_0 _GLF_uniform_int_values[0]
29 # #define _int_1 _GLF_uniform_int_values[1]
31 # precision highp int;
32 # precision highp float;
34 # // Contents of _GLF_uniform_int_values: [0, 1]
35 # layout(set = 0, binding = 0) uniform buf0
37 # int _GLF_uniform_int_values[2];
40 # // Contents of one: 1.0
41 # layout(set = 0, binding = 1) uniform buf1
46 # layout(location = 0) out vec4 _GLF_color;
50 # // Always true as -1 < 1.
51 # if(min(-1.0, one) < 1.0)
53 # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
57 # _GLF_color = vec4(_int_0);
60 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
63 ; Generator: Khronos Glslang Reference Front End; 10
67 %1 = OpExtInstImport "GLSL.std.450"
68 OpMemoryModel Logical GLSL450
69 OpEntryPoint Fragment %4 "main" %24
70 OpExecutionMode %4 OriginUpperLeft
74 OpMemberName %8 0 "one"
76 OpName %24 "_GLF_color"
78 OpMemberName %28 0 "_GLF_uniform_int_values"
80 OpMemberDecorate %8 0 Offset 0
82 OpDecorate %10 DescriptorSet 0
83 OpDecorate %10 Binding 1
84 OpDecorate %24 Location 0
85 OpDecorate %27 ArrayStride 16
86 OpMemberDecorate %28 0 Offset 0
88 OpDecorate %30 DescriptorSet 0
89 OpDecorate %30 Binding 0
91 %3 = OpTypeFunction %2
95 %9 = OpTypePointer Uniform %8
96 %10 = OpVariable %9 Uniform
98 %12 = OpConstant %11 0
99 %13 = OpTypePointer Uniform %6
100 %17 = OpConstant %6 1
102 %22 = OpTypeVector %6 4
103 %23 = OpTypePointer Output %22
104 %24 = OpVariable %23 Output
106 %26 = OpConstant %25 2
107 %27 = OpTypeArray %11 %26
108 %28 = OpTypeStruct %27
109 %29 = OpTypePointer Uniform %28
110 %30 = OpVariable %29 Uniform
111 %31 = OpConstant %11 1
112 %32 = OpTypePointer Uniform %11
113 %4 = OpFunction %2 None %3
115 %14 = OpAccessChain %13 %10 %12
117 %16 = OpExtInst %6 %1 FMin %7 %15
118 %19 = OpFOrdLessThan %18 %16 %17
119 OpSelectionMerge %21 None
120 OpBranchConditional %19 %20 %46
122 %33 = OpAccessChain %32 %30 %12 %31
124 %35 = OpConvertSToF %6 %34
125 %36 = OpAccessChain %32 %30 %12 %12
127 %38 = OpConvertSToF %6 %37
128 %39 = OpAccessChain %32 %30 %12 %12
130 %41 = OpConvertSToF %6 %40
131 %42 = OpAccessChain %32 %30 %12 %31
133 %44 = OpConvertSToF %6 %43
134 %45 = OpCompositeConstruct %22 %35 %38 %41 %44
138 %47 = OpAccessChain %32 %30 %12 %12
140 %49 = OpConvertSToF %6 %48
141 %50 = OpCompositeConstruct %22 %49 %49 %49 %49
149 # uniforms for variant
152 BUFFER variant_one DATA_TYPE float STD140 DATA
155 # _GLF_uniform_int_values
156 BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
160 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
162 PIPELINE graphics variant_pipeline
163 ATTACH variant_vertex_shader
164 ATTACH variant_fragment_shader
165 FRAMEBUFFER_SIZE 256 256
166 BIND BUFFER variant_framebuffer AS color LOCATION 0
167 BIND BUFFER variant_one AS uniform DESCRIPTOR_SET 0 BINDING 1
168 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
170 CLEAR_COLOR variant_pipeline 0 0 0 255
172 CLEAR variant_pipeline
173 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
175 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255