1#!amber
2
3# Copyright 2021 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 BRW 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_1 _GLF_uniform_int_values[0]
29# #define _int_0 _GLF_uniform_int_values[1]
30# #define _float_1_0 _GLF_uniform_float_values[0]
31#
32# precision highp float;
33# precision highp int;
34#
35# // Contents of _GLF_uniform_float_values: 1.0
36# layout(set = 0, binding = 0) uniform buf0
37# {
38#     float _GLF_uniform_float_values[1];
39# };
40#
41# // Contents of _GLF_uniform_int_values: [1, 0]
42# layout(set = 0, binding = 1) uniform buf1
43# {
44#     int _GLF_uniform_int_values[2];
45# };
46#
47# // Contents of zero: 0.0
48# layout(set = 0, binding = 2) uniform buf2
49# {
50#     float zero;
51# };
52#
53# layout(location = 0) out vec4 _GLF_color;
54#
55# void main()
56# {
57#     int a = ~(((zero < _float_1_0) ? _int_0 : _int_1) | 1);
58#
59#     // Always true.
60#     if(a == ~ _int_1)
61#     {
62#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
63#     }
64#     else
65#     {
66#         _GLF_color = vec4(_int_0);
67#     }
68# }
69SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
70; SPIR-V
71; Version: 1.0
72; Generator: Khronos Glslang Reference Front End; 10
73; Bound: 73
74; Schema: 0
75               OpCapability Shader
76          %1 = OpExtInstImport "GLSL.std.450"
77               OpMemoryModel Logical GLSL450
78               OpEntryPoint Fragment %4 "main" %54
79               OpExecutionMode %4 OriginUpperLeft
80               OpSource ESSL 320
81               OpName %4 "main"
82               OpName %8 "a"
83               OpName %10 "buf2"
84               OpMemberName %10 0 "zero"
85               OpName %12 ""
86               OpName %20 "buf0"
87               OpMemberName %20 0 "_GLF_uniform_float_values"
88               OpName %22 ""
89               OpName %32 "buf1"
90               OpMemberName %32 0 "_GLF_uniform_int_values"
91               OpName %34 ""
92               OpName %54 "_GLF_color"
93               OpMemberDecorate %10 0 Offset 0
94               OpDecorate %10 Block
95               OpDecorate %12 DescriptorSet 0
96               OpDecorate %12 Binding 2
97               OpDecorate %19 ArrayStride 16
98               OpMemberDecorate %20 0 Offset 0
99               OpDecorate %20 Block
100               OpDecorate %22 DescriptorSet 0
101               OpDecorate %22 Binding 0
102               OpDecorate %31 ArrayStride 16
103               OpMemberDecorate %32 0 Offset 0
104               OpDecorate %32 Block
105               OpDecorate %34 DescriptorSet 0
106               OpDecorate %34 Binding 1
107               OpDecorate %54 Location 0
108          %2 = OpTypeVoid
109          %3 = OpTypeFunction %2
110          %6 = OpTypeInt 32 1
111          %7 = OpTypePointer Function %6
112          %9 = OpTypeFloat 32
113         %10 = OpTypeStruct %9
114         %11 = OpTypePointer Uniform %10
115         %12 = OpVariable %11 Uniform
116         %13 = OpConstant %6 0
117         %14 = OpTypePointer Uniform %9
118         %17 = OpTypeInt 32 0
119         %18 = OpConstant %17 1
120         %19 = OpTypeArray %9 %18
121         %20 = OpTypeStruct %19
122         %21 = OpTypePointer Uniform %20
123         %22 = OpVariable %21 Uniform
124         %25 = OpTypeBool
125         %30 = OpConstant %17 2
126         %31 = OpTypeArray %6 %30
127         %32 = OpTypeStruct %31
128         %33 = OpTypePointer Uniform %32
129         %34 = OpVariable %33 Uniform
130         %35 = OpConstant %6 1
131         %36 = OpTypePointer Uniform %6
132         %52 = OpTypeVector %9 4
133         %53 = OpTypePointer Output %52
134         %54 = OpVariable %53 Output
135          %4 = OpFunction %2 None %3
136          %5 = OpLabel
137          %8 = OpVariable %7 Function
138         %27 = OpVariable %7 Function
139         %15 = OpAccessChain %14 %12 %13
140         %16 = OpLoad %9 %15
141         %23 = OpAccessChain %14 %22 %13 %13
142         %24 = OpLoad %9 %23
143         %26 = OpFOrdLessThan %25 %16 %24
144               OpSelectionMerge %29 None
145               OpBranchConditional %26 %28 %39
146         %28 = OpLabel
147         %37 = OpAccessChain %36 %34 %13 %35
148         %38 = OpLoad %6 %37
149               OpStore %27 %38
150               OpBranch %29
151         %39 = OpLabel
152         %40 = OpAccessChain %36 %34 %13 %13
153         %41 = OpLoad %6 %40
154               OpStore %27 %41
155               OpBranch %29
156         %29 = OpLabel
157         %42 = OpLoad %6 %27
158         %43 = OpBitwiseOr %6 %42 %35
159         %44 = OpNot %6 %43
160               OpStore %8 %44
161         %45 = OpLoad %6 %8
162         %46 = OpAccessChain %36 %34 %13 %13
163         %47 = OpLoad %6 %46
164         %48 = OpNot %6 %47
165         %49 = OpIEqual %25 %45 %48
166               OpSelectionMerge %51 None
167               OpBranchConditional %49 %50 %68
168         %50 = OpLabel
169         %55 = OpAccessChain %36 %34 %13 %13
170         %56 = OpLoad %6 %55
171         %57 = OpConvertSToF %9 %56
172         %58 = OpAccessChain %36 %34 %13 %35
173         %59 = OpLoad %6 %58
174         %60 = OpConvertSToF %9 %59
175         %61 = OpAccessChain %36 %34 %13 %35
176         %62 = OpLoad %6 %61
177         %63 = OpConvertSToF %9 %62
178         %64 = OpAccessChain %36 %34 %13 %13
179         %65 = OpLoad %6 %64
180         %66 = OpConvertSToF %9 %65
181         %67 = OpCompositeConstruct %52 %57 %60 %63 %66
182               OpStore %54 %67
183               OpBranch %51
184         %68 = OpLabel
185         %69 = OpAccessChain %36 %34 %13 %35
186         %70 = OpLoad %6 %69
187         %71 = OpConvertSToF %9 %70
188         %72 = OpCompositeConstruct %52 %71 %71 %71 %71
189               OpStore %54 %72
190               OpBranch %51
191         %51 = OpLabel
192               OpReturn
193               OpFunctionEnd
194END
195
196# uniforms for variant
197
198# zero
199BUFFER variant_zero DATA_TYPE float STD140 DATA
200 0.0
201END
202# _GLF_uniform_int_values
203BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
204 1 0
205END
206# _GLF_uniform_float_values
207BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
208 1.0
209END
210
211BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
212
213PIPELINE graphics variant_pipeline
214  ATTACH variant_vertex_shader
215  ATTACH variant_fragment_shader
216  FRAMEBUFFER_SIZE 256 256
217  BIND BUFFER variant_framebuffer AS color LOCATION 0
218  BIND BUFFER variant_zero AS uniform DESCRIPTOR_SET 0 BINDING 2
219  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1
220  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0
221END
222CLEAR_COLOR variant_pipeline 0 0 0 255
223
224CLEAR variant_pipeline
225RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
226
227EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
228