1#!amber
2
3# Copyright 2022 Google LLC
4#
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
8#
9#     http://www.apache.org/licenses/LICENSE-2.0
10#
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.
16
17
18# A test for a coverage-gap found by the GraphicsFuzz project.
19
20# Short description: A fragment shader that covers specific LLVM code paths
21
22# The test passes because the shader always writes red.
23
24SHADER vertex variant_vertex_shader PASSTHROUGH
25
26# variant_fragment_shader is derived from the following GLSL:
27# #version 320 es
28# #define _int_0 _GLF_uniform_int_values[0]
29# #define _int_1 _GLF_uniform_int_values[1]
30# #define _int_10 _GLF_uniform_int_values[2]
31#
32# precision highp float;
33# precision highp int;
34#
35# // Contents of _GLF_uniform_int_values: [0, 1, 10]
36# layout(set = 0, binding = 0) uniform buf0
37# {
38#     int _GLF_uniform_int_values[3];
39# };
40#
41# const int _GLF_global_loop_bound = 10;
42# int _GLF_global_loop_count = 0;
43#
44# layout(location = 0) out vec4 _GLF_color;
45#
46# // Contents of one: 1
47# layout(set = 0, binding = 1) uniform buf1
48# {
49#     int one;
50# };
51#
52# void main()
53# {
54#     int a = _int_0;
55#
56#     // (1 ^ 1) & 1 = 0, therefore the loop iterates until global loop bound is reached.
57#     for(int i = _int_1; i != ((1 ^ one) & 1) && _GLF_global_loop_count < _GLF_global_loop_bound; i++)
58#     {
59#         _GLF_global_loop_count++;
60#         a++;
61#     }
62#
63#     // Always true.
64#     if(a == _int_10)
65#     {
66#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
67#     }
68#     else
69#     {
70#         _GLF_color = vec4(_int_0);
71#     }
72# }
73SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
74; SPIR-V
75; Version: 1.0
76; Generator: Khronos Glslang Reference Front End; 10
77; Bound: 79
78; Schema: 0
79               OpCapability Shader
80          %1 = OpExtInstImport "GLSL.std.450"
81               OpMemoryModel Logical GLSL450
82               OpEntryPoint Fragment %4 "main" %60
83               OpExecutionMode %4 OriginUpperLeft
84               OpSource ESSL 320
85               OpName %4 "main"
86               OpName %8 "_GLF_global_loop_count"
87               OpName %11 "a"
88               OpName %15 "buf0"
89               OpMemberName %15 0 "_GLF_uniform_int_values"
90               OpName %17 ""
91               OpName %21 "i"
92               OpName %31 "buf1"
93               OpMemberName %31 0 "one"
94               OpName %33 ""
95               OpName %60 "_GLF_color"
96               OpDecorate %14 ArrayStride 16
97               OpMemberDecorate %15 0 Offset 0
98               OpDecorate %15 Block
99               OpDecorate %17 DescriptorSet 0
100               OpDecorate %17 Binding 0
101               OpMemberDecorate %31 0 Offset 0
102               OpDecorate %31 Block
103               OpDecorate %33 DescriptorSet 0
104               OpDecorate %33 Binding 1
105               OpDecorate %60 Location 0
106          %2 = OpTypeVoid
107          %3 = OpTypeFunction %2
108          %6 = OpTypeInt 32 1
109          %7 = OpTypePointer Private %6
110          %8 = OpVariable %7 Private
111          %9 = OpConstant %6 0
112         %10 = OpTypePointer Function %6
113         %12 = OpTypeInt 32 0
114         %13 = OpConstant %12 3
115         %14 = OpTypeArray %6 %13
116         %15 = OpTypeStruct %14
117         %16 = OpTypePointer Uniform %15
118         %17 = OpVariable %16 Uniform
119         %18 = OpTypePointer Uniform %6
120         %22 = OpConstant %6 1
121         %31 = OpTypeStruct %6
122         %32 = OpTypePointer Uniform %31
123         %33 = OpVariable %32 Uniform
124         %38 = OpTypeBool
125         %41 = OpConstant %6 10
126         %51 = OpConstant %6 2
127         %57 = OpTypeFloat 32
128         %58 = OpTypeVector %57 4
129         %59 = OpTypePointer Output %58
130         %60 = OpVariable %59 Output
131          %4 = OpFunction %2 None %3
132          %5 = OpLabel
133         %11 = OpVariable %10 Function
134         %21 = OpVariable %10 Function
135               OpStore %8 %9
136         %19 = OpAccessChain %18 %17 %9 %9
137         %20 = OpLoad %6 %19
138               OpStore %11 %20
139         %23 = OpAccessChain %18 %17 %9 %22
140         %24 = OpLoad %6 %23
141               OpStore %21 %24
142               OpBranch %25
143         %25 = OpLabel
144               OpLoopMerge %27 %28 None
145               OpBranch %29
146         %29 = OpLabel
147         %30 = OpLoad %6 %21
148         %34 = OpAccessChain %18 %33 %9
149         %35 = OpLoad %6 %34
150         %36 = OpBitwiseXor %6 %22 %35
151         %37 = OpBitwiseAnd %6 %36 %22
152         %39 = OpINotEqual %38 %30 %37
153         %40 = OpLoad %6 %8
154         %42 = OpSLessThan %38 %40 %41
155         %43 = OpLogicalAnd %38 %39 %42
156               OpBranchConditional %43 %26 %27
157         %26 = OpLabel
158         %44 = OpLoad %6 %8
159         %45 = OpIAdd %6 %44 %22
160               OpStore %8 %45
161         %46 = OpLoad %6 %11
162         %47 = OpIAdd %6 %46 %22
163               OpStore %11 %47
164               OpBranch %28
165         %28 = OpLabel
166         %48 = OpLoad %6 %21
167         %49 = OpIAdd %6 %48 %22
168               OpStore %21 %49
169               OpBranch %25
170         %27 = OpLabel
171         %50 = OpLoad %6 %11
172         %52 = OpAccessChain %18 %17 %9 %51
173         %53 = OpLoad %6 %52
174         %54 = OpIEqual %38 %50 %53
175               OpSelectionMerge %56 None
176               OpBranchConditional %54 %55 %74
177         %55 = OpLabel
178         %61 = OpAccessChain %18 %17 %9 %22
179         %62 = OpLoad %6 %61
180         %63 = OpConvertSToF %57 %62
181         %64 = OpAccessChain %18 %17 %9 %9
182         %65 = OpLoad %6 %64
183         %66 = OpConvertSToF %57 %65
184         %67 = OpAccessChain %18 %17 %9 %9
185         %68 = OpLoad %6 %67
186         %69 = OpConvertSToF %57 %68
187         %70 = OpAccessChain %18 %17 %9 %22
188         %71 = OpLoad %6 %70
189         %72 = OpConvertSToF %57 %71
190         %73 = OpCompositeConstruct %58 %63 %66 %69 %72
191               OpStore %60 %73
192               OpBranch %56
193         %74 = OpLabel
194         %75 = OpAccessChain %18 %17 %9 %9
195         %76 = OpLoad %6 %75
196         %77 = OpConvertSToF %57 %76
197         %78 = OpCompositeConstruct %58 %77 %77 %77 %77
198               OpStore %60 %78
199               OpBranch %56
200         %56 = OpLabel
201               OpReturn
202               OpFunctionEnd
203END
204
205# uniforms for variant
206
207# one
208BUFFER variant_one DATA_TYPE int32 STD140 DATA
209 1
210END
211# _GLF_uniform_int_values
212BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
213 0 1 10
214END
215
216BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
217
218PIPELINE graphics variant_pipeline
219  ATTACH variant_vertex_shader
220  ATTACH variant_fragment_shader
221  FRAMEBUFFER_SIZE 32 32
222  BIND BUFFER variant_framebuffer AS color LOCATION 0
223  BIND BUFFER variant_one AS uniform DESCRIPTOR_SET 0 BINDING 1
224  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
225END
226CLEAR_COLOR variant_pipeline 0 0 0 255
227
228CLEAR variant_pipeline
229RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 32 32
230
231EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255
232