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1#!amber
2
3# Copyright 2020 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 NIR 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_10 _GLF_uniform_int_values[1]
30# #define _int_1 _GLF_uniform_int_values[2]
31#
32# precision highp float;
33# precision highp int;
34#
35# // Contents of _GLF_uniform_int_values: [0, 10, 1]
36# layout(set = 0, binding = 0) uniform buf0
37# {
38#     int _GLF_uniform_int_values[3];
39# };
40#
41# layout(location = 0) out vec4 _GLF_color;
42#
43# int func()
44# {
45#     int i = _int_0;
46#
47#     do
48#     {
49#         i++;
50#
51#         if (true)
52#         {
53#             if (true)
54#             {
55#                 return _int_1;
56#             }
57#         }
58#     }
59#     while (i < _int_10);
60#
61#     return _int_0;
62# }
63#
64# void main()
65# {
66#     if (func() == _int_1)
67#     {
68#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
69#     }
70#     else
71#     {
72#         _GLF_color = vec4(_int_0);
73#     }
74# }
75SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
76; SPIR-V
77; Version: 1.0
78; Generator: Khronos Glslang Reference Front End; 10
79; Bound: 75
80; Schema: 0
81               OpCapability Shader
82          %1 = OpExtInstImport "GLSL.std.450"
83               OpMemoryModel Logical GLSL450
84               OpEntryPoint Fragment %4 "main" %56
85               OpExecutionMode %4 OriginUpperLeft
86               OpSource ESSL 320
87               OpName %4 "main"
88               OpName %8 "func("
89               OpName %11 "i"
90               OpName %15 "buf0"
91               OpMemberName %15 0 "_GLF_uniform_int_values"
92               OpName %17 ""
93               OpName %56 "_GLF_color"
94               OpDecorate %14 ArrayStride 16
95               OpMemberDecorate %15 0 Offset 0
96               OpDecorate %15 Block
97               OpDecorate %17 DescriptorSet 0
98               OpDecorate %17 Binding 0
99               OpDecorate %56 Location 0
100          %2 = OpTypeVoid
101          %3 = OpTypeFunction %2
102          %6 = OpTypeInt 32 1
103          %7 = OpTypeFunction %6
104         %10 = OpTypePointer Function %6
105         %12 = OpTypeInt 32 0
106         %13 = OpConstant %12 3
107         %14 = OpTypeArray %6 %13
108         %15 = OpTypeStruct %14
109         %16 = OpTypePointer Uniform %15
110         %17 = OpVariable %16 Uniform
111         %18 = OpConstant %6 0
112         %19 = OpTypePointer Uniform %6
113         %27 = OpConstant %6 1
114         %29 = OpTypeBool
115         %30 = OpConstantTrue %29
116         %35 = OpConstant %6 2
117         %53 = OpTypeFloat 32
118         %54 = OpTypeVector %53 4
119         %55 = OpTypePointer Output %54
120         %56 = OpVariable %55 Output
121          %4 = OpFunction %2 None %3
122          %5 = OpLabel
123         %47 = OpFunctionCall %6 %8
124         %48 = OpAccessChain %19 %17 %18 %35
125         %49 = OpLoad %6 %48
126         %50 = OpIEqual %29 %47 %49
127               OpSelectionMerge %52 None
128               OpBranchConditional %50 %51 %70
129         %51 = OpLabel
130         %57 = OpAccessChain %19 %17 %18 %35
131         %58 = OpLoad %6 %57
132         %59 = OpConvertSToF %53 %58
133         %60 = OpAccessChain %19 %17 %18 %18
134         %61 = OpLoad %6 %60
135         %62 = OpConvertSToF %53 %61
136         %63 = OpAccessChain %19 %17 %18 %18
137         %64 = OpLoad %6 %63
138         %65 = OpConvertSToF %53 %64
139         %66 = OpAccessChain %19 %17 %18 %35
140         %67 = OpLoad %6 %66
141         %68 = OpConvertSToF %53 %67
142         %69 = OpCompositeConstruct %54 %59 %62 %65 %68
143               OpStore %56 %69
144               OpBranch %52
145         %70 = OpLabel
146         %71 = OpAccessChain %19 %17 %18 %18
147         %72 = OpLoad %6 %71
148         %73 = OpConvertSToF %53 %72
149         %74 = OpCompositeConstruct %54 %73 %73 %73 %73
150               OpStore %56 %74
151               OpBranch %52
152         %52 = OpLabel
153               OpReturn
154               OpFunctionEnd
155          %8 = OpFunction %6 None %7
156          %9 = OpLabel
157         %11 = OpVariable %10 Function
158         %20 = OpAccessChain %19 %17 %18 %18
159         %21 = OpLoad %6 %20
160               OpStore %11 %21
161               OpBranch %22
162         %22 = OpLabel
163               OpLoopMerge %24 %25 None
164               OpBranch %23
165         %23 = OpLabel
166         %26 = OpLoad %6 %11
167         %28 = OpIAdd %6 %26 %27
168               OpStore %11 %28
169               OpSelectionMerge %32 None
170               OpBranchConditional %30 %31 %32
171         %31 = OpLabel
172               OpSelectionMerge %34 None
173               OpBranchConditional %30 %33 %34
174         %33 = OpLabel
175         %36 = OpAccessChain %19 %17 %18 %35
176         %37 = OpLoad %6 %36
177               OpReturnValue %37
178         %34 = OpLabel
179               OpBranch %32
180         %32 = OpLabel
181               OpBranch %25
182         %25 = OpLabel
183         %39 = OpLoad %6 %11
184         %40 = OpAccessChain %19 %17 %18 %27
185         %41 = OpLoad %6 %40
186         %42 = OpSLessThan %29 %39 %41
187               OpBranchConditional %42 %22 %24
188         %24 = OpLabel
189         %43 = OpAccessChain %19 %17 %18 %18
190         %44 = OpLoad %6 %43
191               OpReturnValue %44
192               OpFunctionEnd
193END
194
195# uniforms for variant
196
197# _GLF_uniform_int_values
198BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
199 0 10 1
200END
201
202BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
203
204PIPELINE graphics variant_pipeline
205  ATTACH variant_vertex_shader
206  ATTACH variant_fragment_shader
207  FRAMEBUFFER_SIZE 256 256
208  BIND BUFFER variant_framebuffer AS color LOCATION 0
209  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
210END
211CLEAR_COLOR variant_pipeline 0 0 0 255
212
213CLEAR variant_pipeline
214RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
215
216EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
217