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
24# Optimized using spirv-opt with the following arguments:
25# '-O'
26# spirv-opt commit hash: a0370efd589be33d5d9a85cfde2f85841b3755af
27
28
29
30SHADER vertex variant_vertex_shader PASSTHROUGH
31
32# variant_fragment_shader is derived from the following GLSL:
33# #version 320 es
34#
35# #define _int_8 _GLF_uniform_int_values[0]
36# #define _int_2 _GLF_uniform_int_values[1]
37# #define _int_0 _GLF_uniform_int_values[2]
38# #define _int_1 _GLF_uniform_int_values[3]
39# #define _int_3 _GLF_uniform_int_values[4]
40# #define _float_0_0 _GLF_uniform_float_values[0]
41# #define _float_2_0 _GLF_uniform_float_values[1]
42#
43# precision highp float;
44# precision highp int;
45#
46# // Contents of _GLF_uniform_int_values: [8, 2, 0, 1, 3]
47# layout(set = 0, binding = 0) uniform buf0
48# {
49#     int _GLF_uniform_int_values[5];
50# };
51#
52# // Contents of _GLF_uniform_float_values: [0.0, 2.0]
53# layout(set = 0, binding = 1) uniform buf1
54# {
55#     float _GLF_uniform_float_values[2];
56# };
57#
58# // Contents of injectionSwitch: [0.0, 1.0]
59# layout(set = 0, binding = 2) uniform buf2
60# {
61#     highp vec2 injectionSwitch;
62# };
63#
64# layout(location = 0) out vec4 _GLF_color;
65#
66# // Returns true if v.y >= 2.0.
67# bool func0(vec4 v)
68# {
69#     // Always false.
70#     while(injectionSwitch.x < _float_0_0)
71#     {
72#         return false;
73#     }
74#
75#     if(v.y < _float_2_0)
76#     {
77#         return false;
78#     }
79#
80#     return true;
81# }
82#
83# // Returns 2.
84# int func1()
85# {
86#     int a = _int_0;
87#
88#     // Iterates seven times.
89#     for(int i = _int_1; i < _int_8; i++)
90#     {
91#         if(func0(vec4[8](vec4(_int_1), vec4(_int_1), vec4(_int_3), vec4(_int_1), vec4(_int_1), vec4(_int_1), vec4(_int_1), vec4(_int_1))[i]))
92#         {
93#             a = i;
94#         }
95#     }
96#
97#     return a;
98# }
99#
100# void main()
101# {
102#     // Always true.
103#     if(func1() == _int_2)
104#     {
105#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
106#     }
107#     else
108#     {
109#         _GLF_color = vec4(_int_0);
110#     }
111# }
112SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
113; SPIR-V
114; Version: 1.0
115; Generator: Khronos Glslang Reference Front End; 10
116; Bound: 275
117; Schema: 0
118               OpCapability Shader
119          %1 = OpExtInstImport "GLSL.std.450"
120               OpMemoryModel Logical GLSL450
121               OpEntryPoint Fragment %4 "main" %139
122               OpExecutionMode %4 OriginUpperLeft
123               OpSource ESSL 320
124               OpName %4 "main"
125               OpName %24 "buf2"
126               OpMemberName %24 0 "injectionSwitch"
127               OpName %26 ""
128               OpName %35 "buf1"
129               OpMemberName %35 0 "_GLF_uniform_float_values"
130               OpName %37 ""
131               OpName %61 "buf0"
132               OpMemberName %61 0 "_GLF_uniform_int_values"
133               OpName %63 ""
134               OpName %139 "_GLF_color"
135               OpMemberDecorate %24 0 Offset 0
136               OpDecorate %24 Block
137               OpDecorate %26 DescriptorSet 0
138               OpDecorate %26 Binding 2
139               OpDecorate %34 ArrayStride 16
140               OpMemberDecorate %35 0 Offset 0
141               OpDecorate %35 Block
142               OpDecorate %37 DescriptorSet 0
143               OpDecorate %37 Binding 1
144               OpDecorate %60 ArrayStride 16
145               OpMemberDecorate %61 0 Offset 0
146               OpDecorate %61 Block
147               OpDecorate %63 DescriptorSet 0
148               OpDecorate %63 Binding 0
149               OpDecorate %139 Location 0
150          %2 = OpTypeVoid
151          %3 = OpTypeFunction %2
152          %6 = OpTypeFloat 32
153          %7 = OpTypeVector %6 4
154          %8 = OpTypePointer Function %7
155          %9 = OpTypeBool
156         %14 = OpTypeInt 32 1
157         %23 = OpTypeVector %6 2
158         %24 = OpTypeStruct %23
159         %25 = OpTypePointer Uniform %24
160         %26 = OpVariable %25 Uniform
161         %27 = OpConstant %14 0
162         %28 = OpTypeInt 32 0
163         %29 = OpConstant %28 0
164         %30 = OpTypePointer Uniform %6
165         %33 = OpConstant %28 2
166         %34 = OpTypeArray %6 %33
167         %35 = OpTypeStruct %34
168         %36 = OpTypePointer Uniform %35
169         %37 = OpVariable %36 Uniform
170         %41 = OpConstantFalse %9
171         %47 = OpConstant %14 1
172         %54 = OpConstantTrue %9
173         %59 = OpConstant %28 5
174         %60 = OpTypeArray %14 %59
175         %61 = OpTypeStruct %60
176         %62 = OpTypePointer Uniform %61
177         %63 = OpVariable %62 Uniform
178         %64 = OpConstant %14 2
179         %65 = OpTypePointer Uniform %14
180         %69 = OpConstant %14 3
181         %89 = OpConstant %14 4
182        %114 = OpConstant %28 8
183        %115 = OpTypeArray %7 %114
184        %119 = OpTypePointer Function %115
185        %138 = OpTypePointer Output %7
186        %139 = OpVariable %138 Output
187        %263 = OpUndef %9
188          %4 = OpFunction %2 None %3
189          %5 = OpLabel
190        %169 = OpVariable %119 Function
191        %172 = OpAccessChain %65 %63 %27 %64
192        %173 = OpLoad %14 %172
193        %174 = OpAccessChain %65 %63 %27 %69
194        %175 = OpLoad %14 %174
195               OpBranch %176
196        %176 = OpLabel
197        %262 = OpPhi %9 %263 %5 %259 %223
198        %256 = OpPhi %14 %173 %5 %274 %223
199        %255 = OpPhi %14 %175 %5 %225 %223
200        %179 = OpAccessChain %65 %63 %27 %27
201        %180 = OpLoad %14 %179
202        %181 = OpSLessThan %9 %255 %180
203               OpLoopMerge %226 %223 None
204               OpBranchConditional %181 %182 %226
205        %182 = OpLabel
206        %185 = OpConvertSToF %6 %175
207        %186 = OpCompositeConstruct %7 %185 %185 %185 %185
208        %191 = OpAccessChain %65 %63 %27 %89
209        %192 = OpLoad %14 %191
210        %193 = OpConvertSToF %6 %192
211        %194 = OpCompositeConstruct %7 %193 %193 %193 %193
212        %215 = OpCompositeConstruct %115 %186 %186 %194 %186 %186 %186 %186 %186
213               OpStore %169 %215
214        %217 = OpAccessChain %8 %169 %255
215        %218 = OpLoad %7 %217
216               OpSelectionMerge %252 None
217               OpSwitch %29 %232
218        %232 = OpLabel
219               OpBranch %233
220        %233 = OpLabel
221        %235 = OpAccessChain %30 %26 %27 %29
222        %236 = OpLoad %6 %235
223        %237 = OpAccessChain %30 %37 %27 %27
224        %238 = OpLoad %6 %237
225        %239 = OpFOrdLessThan %9 %236 %238
226               OpLoopMerge %242 %241 None
227               OpBranchConditional %239 %240 %242
228        %240 = OpLabel
229               OpBranch %242
230        %241 = OpLabel
231               OpBranch %233
232        %242 = OpLabel
233        %260 = OpPhi %9 %262 %233 %41 %240
234        %257 = OpPhi %9 %41 %233 %54 %240
235               OpSelectionMerge %244 None
236               OpBranchConditional %257 %252 %244
237        %244 = OpLabel
238        %246 = OpCompositeExtract %6 %218 1
239        %247 = OpAccessChain %30 %37 %27 %47
240        %248 = OpLoad %6 %247
241        %249 = OpFOrdLessThan %9 %246 %248
242               OpSelectionMerge %251 None
243               OpBranchConditional %249 %250 %251
244        %250 = OpLabel
245               OpBranch %252
246        %251 = OpLabel
247               OpBranch %252
248        %252 = OpLabel
249        %259 = OpPhi %9 %260 %242 %41 %250 %54 %251
250        %274 = OpSelect %14 %259 %255 %256
251               OpBranch %223
252        %223 = OpLabel
253        %225 = OpIAdd %14 %255 %47
254               OpBranch %176
255        %226 = OpLabel
256        %133 = OpAccessChain %65 %63 %27 %47
257        %134 = OpLoad %14 %133
258        %135 = OpIEqual %9 %256 %134
259               OpSelectionMerge %137 None
260               OpBranchConditional %135 %136 %153
261        %153 = OpLabel
262        %156 = OpConvertSToF %6 %173
263        %157 = OpCompositeConstruct %7 %156 %156 %156 %156
264               OpStore %139 %157
265               OpBranch %137
266        %136 = OpLabel
267        %142 = OpConvertSToF %6 %175
268        %145 = OpConvertSToF %6 %173
269        %152 = OpCompositeConstruct %7 %142 %145 %145 %142
270               OpStore %139 %152
271               OpBranch %137
272        %137 = OpLabel
273               OpReturn
274               OpFunctionEnd
275END
276
277# uniforms for variant
278
279# injectionSwitch
280BUFFER variant_injectionSwitch DATA_TYPE vec2<float> STD140 DATA
281 0.0 1.0
282END
283# _GLF_uniform_float_values
284BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
285 0.0 2.0
286END
287# _GLF_uniform_int_values
288BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
289 8 2 0 1 3
290END
291
292BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
293
294PIPELINE graphics variant_pipeline
295  ATTACH variant_vertex_shader
296  ATTACH variant_fragment_shader
297  FRAMEBUFFER_SIZE 32 32
298  BIND BUFFER variant_framebuffer AS color LOCATION 0
299  BIND BUFFER variant_injectionSwitch AS uniform DESCRIPTOR_SET 0 BINDING 2
300  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1
301  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
302END
303CLEAR_COLOR variant_pipeline 0 0 0 255
304
305CLEAR variant_pipeline
306RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 32 32
307
308EXPECT variant_framebuffer IDX 0 0 SIZE 32 32 EQ_RGBA 255 0 0 255
309