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 a specific inst combine and or xor code path
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 310 es
28# #define _int_10 _GLF_uniform_int_values[0]
29# #define _int_1 _GLF_uniform_int_values[1]
30# #define _int_0 _GLF_uniform_int_values[2]
31#
32# precision highp float;
33#
34# precision highp int;
35#
36# // Contents of _GLF_uniform_int_values: [10, 1, 0]
37# layout(set = 0, binding = 0) uniform buf0
38# {
39#     int _GLF_uniform_int_values[3];
40# };
41#
42# layout(location = 0) out vec4 _GLF_color;
43#
44# void main()
45# {
46#     int a = _int_0;
47#
48#     for (int i = _int_0; i < _int_10; i++)
49#     {
50#         switch (i)
51#         {
52#             case -1:
53#             case 0:
54#                 a = _int_1;
55#         }
56#     }
57#
58#     if (a == _int_1)
59#     {
60#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
61#     }
62#     else
63#     {
64#         _GLF_color = vec4(_int_0);
65#     }
66# }
67SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
68; SPIR-V
69; Version: 1.0
70; Generator: Khronos Glslang Reference Front End; 10
71; Bound: 70
72; Schema: 0
73               OpCapability Shader
74          %1 = OpExtInstImport "GLSL.std.450"
75               OpMemoryModel Logical GLSL450
76               OpEntryPoint Fragment %4 "main" %51
77               OpExecutionMode %4 OriginUpperLeft
78               OpSource ESSL 310
79               OpName %4 "main"
80               OpName %8 "a"
81               OpName %12 "buf0"
82               OpMemberName %12 0 "_GLF_uniform_int_values"
83               OpName %14 ""
84               OpName %20 "i"
85               OpName %51 "_GLF_color"
86               OpDecorate %11 ArrayStride 16
87               OpMemberDecorate %12 0 Offset 0
88               OpDecorate %12 Block
89               OpDecorate %14 DescriptorSet 0
90               OpDecorate %14 Binding 0
91               OpDecorate %51 Location 0
92          %2 = OpTypeVoid
93          %3 = OpTypeFunction %2
94          %6 = OpTypeInt 32 1
95          %7 = OpTypePointer Function %6
96          %9 = OpTypeInt 32 0
97         %10 = OpConstant %9 3
98         %11 = OpTypeArray %6 %10
99         %12 = OpTypeStruct %11
100         %13 = OpTypePointer Uniform %12
101         %14 = OpVariable %13 Uniform
102         %15 = OpConstant %6 0
103         %16 = OpConstant %6 2
104         %17 = OpTypePointer Uniform %6
105         %31 = OpTypeBool
106         %36 = OpConstant %6 1
107         %48 = OpTypeFloat 32
108         %49 = OpTypeVector %48 4
109         %50 = OpTypePointer Output %49
110         %51 = OpVariable %50 Output
111          %4 = OpFunction %2 None %3
112          %5 = OpLabel
113          %8 = OpVariable %7 Function
114         %20 = OpVariable %7 Function
115         %18 = OpAccessChain %17 %14 %15 %16
116         %19 = OpLoad %6 %18
117               OpStore %8 %19
118         %21 = OpAccessChain %17 %14 %15 %16
119         %22 = OpLoad %6 %21
120               OpStore %20 %22
121               OpBranch %23
122         %23 = OpLabel
123               OpLoopMerge %25 %26 None
124               OpBranch %27
125         %27 = OpLabel
126         %28 = OpLoad %6 %20
127         %29 = OpAccessChain %17 %14 %15 %15
128         %30 = OpLoad %6 %29
129         %32 = OpSLessThan %31 %28 %30
130               OpBranchConditional %32 %24 %25
131         %24 = OpLabel
132         %33 = OpLoad %6 %20
133               OpSelectionMerge %35 None
134               OpSwitch %33 %35 -1 %34 0 %34
135         %34 = OpLabel
136         %37 = OpAccessChain %17 %14 %15 %36
137         %38 = OpLoad %6 %37
138               OpStore %8 %38
139               OpBranch %35
140         %35 = OpLabel
141               OpBranch %26
142         %26 = OpLabel
143         %40 = OpLoad %6 %20
144         %41 = OpIAdd %6 %40 %36
145               OpStore %20 %41
146               OpBranch %23
147         %25 = OpLabel
148         %42 = OpLoad %6 %8
149         %43 = OpAccessChain %17 %14 %15 %36
150         %44 = OpLoad %6 %43
151         %45 = OpIEqual %31 %42 %44
152               OpSelectionMerge %47 None
153               OpBranchConditional %45 %46 %65
154         %46 = OpLabel
155         %52 = OpAccessChain %17 %14 %15 %36
156         %53 = OpLoad %6 %52
157         %54 = OpConvertSToF %48 %53
158         %55 = OpAccessChain %17 %14 %15 %16
159         %56 = OpLoad %6 %55
160         %57 = OpConvertSToF %48 %56
161         %58 = OpAccessChain %17 %14 %15 %16
162         %59 = OpLoad %6 %58
163         %60 = OpConvertSToF %48 %59
164         %61 = OpAccessChain %17 %14 %15 %36
165         %62 = OpLoad %6 %61
166         %63 = OpConvertSToF %48 %62
167         %64 = OpCompositeConstruct %49 %54 %57 %60 %63
168               OpStore %51 %64
169               OpBranch %47
170         %65 = OpLabel
171         %66 = OpAccessChain %17 %14 %15 %16
172         %67 = OpLoad %6 %66
173         %68 = OpConvertSToF %48 %67
174         %69 = OpCompositeConstruct %49 %68 %68 %68 %68
175               OpStore %51 %69
176               OpBranch %47
177         %47 = OpLabel
178               OpReturn
179               OpFunctionEnd
180END
181
182# uniforms for variant
183
184# _GLF_uniform_int_values
185BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
186 10 1 0
187END
188
189BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
190
191PIPELINE graphics variant_pipeline
192  ATTACH variant_vertex_shader
193  ATTACH variant_fragment_shader
194  FRAMEBUFFER_SIZE 256 256
195  BIND BUFFER variant_framebuffer AS color LOCATION 0
196  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
197END
198CLEAR_COLOR variant_pipeline 0 0 0 255
199
200CLEAR variant_pipeline
201RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
202
203EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
204