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 float;
32 # precision highp int;
34 # // Contents of _GLF_uniform_int_values: [1, 0]
35 # layout(set = 0, binding = 0) uniform buf0
37 # int _GLF_uniform_int_values[2];
39 # layout(location = 0) out vec4 _GLF_color;
41 # const int _GLF_global_loop_bound = 100;
42 # int _GLF_global_loop_count = 0;
46 # while(_GLF_global_loop_count < _GLF_global_loop_bound)
48 # _GLF_global_loop_count ++;
50 # if(_GLF_global_loop_count * _GLF_global_loop_count > 10)
57 # if(_GLF_global_loop_count == 4)
59 # _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
63 # _GLF_color = vec4(_int_0);
66 SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
69 ; Generator: Khronos Glslang Reference Front End; 10
73 %1 = OpExtInstImport "GLSL.std.450"
74 OpMemoryModel Logical GLSL450
75 OpEntryPoint Fragment %4 "main" %38
76 OpExecutionMode %4 OriginUpperLeft
79 OpName %8 "_GLF_global_loop_count"
80 OpName %38 "_GLF_color"
82 OpMemberName %42 0 "_GLF_uniform_int_values"
84 OpDecorate %38 Location 0
85 OpDecorate %41 ArrayStride 16
86 OpMemberDecorate %42 0 Offset 0
88 OpDecorate %44 DescriptorSet 0
89 OpDecorate %44 Binding 0
91 %3 = OpTypeFunction %2
93 %7 = OpTypePointer Private %6
94 %8 = OpVariable %7 Private
96 %16 = OpConstant %6 100
99 %25 = OpConstant %6 10
100 %31 = OpConstant %6 4
102 %36 = OpTypeVector %35 4
103 %37 = OpTypePointer Output %36
104 %38 = OpVariable %37 Output
106 %40 = OpConstant %39 2
107 %41 = OpTypeArray %6 %40
108 %42 = OpTypeStruct %41
109 %43 = OpTypePointer Uniform %42
110 %44 = OpVariable %43 Uniform
111 %45 = OpTypePointer Uniform %6
112 %4 = OpFunction %2 None %3
117 OpLoopMerge %12 %13 None
121 %18 = OpSLessThan %17 %15 %16
122 OpBranchConditional %18 %11 %12
125 %21 = OpIAdd %6 %19 %20
129 %24 = OpIMul %6 %22 %23
130 %26 = OpSGreaterThan %17 %24 %25
131 OpSelectionMerge %28 None
132 OpBranchConditional %26 %27 %28
141 %32 = OpIEqual %17 %30 %31
142 OpSelectionMerge %34 None
143 OpBranchConditional %32 %33 %59
145 %46 = OpAccessChain %45 %44 %9 %9
147 %48 = OpConvertSToF %35 %47
148 %49 = OpAccessChain %45 %44 %9 %20
150 %51 = OpConvertSToF %35 %50
151 %52 = OpAccessChain %45 %44 %9 %20
153 %54 = OpConvertSToF %35 %53
154 %55 = OpAccessChain %45 %44 %9 %9
156 %57 = OpConvertSToF %35 %56
157 %58 = OpCompositeConstruct %36 %48 %51 %54 %57
161 %60 = OpAccessChain %45 %44 %9 %20
163 %62 = OpConvertSToF %35 %61
164 %63 = OpCompositeConstruct %36 %62 %62 %62 %62
172 # uniforms for variant
174 # _GLF_uniform_int_values
175 BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
179 BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
181 PIPELINE graphics variant_pipeline
182 ATTACH variant_vertex_shader
183 ATTACH variant_fragment_shader
184 FRAMEBUFFER_SIZE 256 256
185 BIND BUFFER variant_framebuffer AS color LOCATION 0
186 BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
188 CLEAR_COLOR variant_pipeline 0 0 0 255
190 CLEAR variant_pipeline
191 RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
193 EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255