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 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_1 _GLF_uniform_int_values[1]
30# #define _uint_5 _GLF_uniform_uint_values[0]
31# #define _float_0_0 _GLF_uniform_float_values[0]
32#
33# precision highp int;
34# precision highp float;
35#
36# // Contents of _GLF_uniform_float_values: 0.0
37# layout(set = 0, binding = 0) uniform buf0
38# {
39#     float _GLF_uniform_float_values[1];
40# };
41#
42# // Contents of _GLF_uniform_uint_values: 5
43# layout(set = 0, binding = 1) uniform buf1
44# {
45#     uint _GLF_uniform_uint_values[1];
46# };
47#
48# // Contents of _GLF_uniform_int_values: [0, 1]
49# layout(set = 0, binding = 2) uniform buf2
50# {
51#     int _GLF_uniform_int_values[2];
52# };
53#
54# layout(location = 0) out vec4 _GLF_color;
55#
56# void main()
57# {
58#     uint a = 0u;
59#     int b = _int_1;
60#
61#     // Always false.
62#     if (gl_FragCoord.x < _float_0_0)
63#     {
64#         // Modulo of zero is undefined, but this is never executed.
65#         b = int(_uint_5 % a);
66#     }
67#
68#     // Always true.
69#     if (b == _int_1)
70#     {
71#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
72#     }
73#     else
74#     {
75#         _GLF_color = vec4(_int_0);
76#     }
77# }
78SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
79; SPIR-V
80; Version: 1.0
81; Generator: Khronos Glslang Reference Front End; 10
82; Bound: 78
83; Schema: 0
84               OpCapability Shader
85          %1 = OpExtInstImport "GLSL.std.450"
86               OpMemoryModel Logical GLSL450
87               OpEntryPoint Fragment %4 "main" %26 %59
88               OpExecutionMode %4 OriginUpperLeft
89               OpSource ESSL 320
90               OpName %4 "main"
91               OpName %8 "a"
92               OpName %12 "b"
93               OpName %15 "buf2"
94               OpMemberName %15 0 "_GLF_uniform_int_values"
95               OpName %17 ""
96               OpName %26 "gl_FragCoord"
97               OpName %32 "buf0"
98               OpMemberName %32 0 "_GLF_uniform_float_values"
99               OpName %34 ""
100               OpName %43 "buf1"
101               OpMemberName %43 0 "_GLF_uniform_uint_values"
102               OpName %45 ""
103               OpName %59 "_GLF_color"
104               OpDecorate %14 ArrayStride 16
105               OpMemberDecorate %15 0 Offset 0
106               OpDecorate %15 Block
107               OpDecorate %17 DescriptorSet 0
108               OpDecorate %17 Binding 2
109               OpDecorate %26 BuiltIn FragCoord
110               OpDecorate %31 ArrayStride 16
111               OpMemberDecorate %32 0 Offset 0
112               OpDecorate %32 Block
113               OpDecorate %34 DescriptorSet 0
114               OpDecorate %34 Binding 0
115               OpDecorate %42 ArrayStride 16
116               OpMemberDecorate %43 0 Offset 0
117               OpDecorate %43 Block
118               OpDecorate %45 DescriptorSet 0
119               OpDecorate %45 Binding 1
120               OpDecorate %59 Location 0
121          %2 = OpTypeVoid
122          %3 = OpTypeFunction %2
123          %6 = OpTypeInt 32 0
124          %7 = OpTypePointer Function %6
125          %9 = OpConstant %6 0
126         %10 = OpTypeInt 32 1
127         %11 = OpTypePointer Function %10
128         %13 = OpConstant %6 2
129         %14 = OpTypeArray %10 %13
130         %15 = OpTypeStruct %14
131         %16 = OpTypePointer Uniform %15
132         %17 = OpVariable %16 Uniform
133         %18 = OpConstant %10 0
134         %19 = OpConstant %10 1
135         %20 = OpTypePointer Uniform %10
136         %23 = OpTypeFloat 32
137         %24 = OpTypeVector %23 4
138         %25 = OpTypePointer Input %24
139         %26 = OpVariable %25 Input
140         %27 = OpTypePointer Input %23
141         %30 = OpConstant %6 1
142         %31 = OpTypeArray %23 %30
143         %32 = OpTypeStruct %31
144         %33 = OpTypePointer Uniform %32
145         %34 = OpVariable %33 Uniform
146         %35 = OpTypePointer Uniform %23
147         %38 = OpTypeBool
148         %42 = OpTypeArray %6 %30
149         %43 = OpTypeStruct %42
150         %44 = OpTypePointer Uniform %43
151         %45 = OpVariable %44 Uniform
152         %46 = OpTypePointer Uniform %6
153         %58 = OpTypePointer Output %24
154         %59 = OpVariable %58 Output
155          %4 = OpFunction %2 None %3
156          %5 = OpLabel
157          %8 = OpVariable %7 Function
158         %12 = OpVariable %11 Function
159               OpStore %8 %9
160         %21 = OpAccessChain %20 %17 %18 %19
161         %22 = OpLoad %10 %21
162               OpStore %12 %22
163         %28 = OpAccessChain %27 %26 %9
164         %29 = OpLoad %23 %28
165         %36 = OpAccessChain %35 %34 %18 %18
166         %37 = OpLoad %23 %36
167         %39 = OpFOrdLessThan %38 %29 %37
168               OpSelectionMerge %41 None
169               OpBranchConditional %39 %40 %41
170         %40 = OpLabel
171         %47 = OpAccessChain %46 %45 %18 %18
172         %48 = OpLoad %6 %47
173         %49 = OpLoad %6 %8
174         %50 = OpUMod %6 %48 %49
175         %51 = OpBitcast %10 %50
176               OpStore %12 %51
177               OpBranch %41
178         %41 = OpLabel
179         %52 = OpLoad %10 %12
180         %53 = OpAccessChain %20 %17 %18 %19
181         %54 = OpLoad %10 %53
182         %55 = OpIEqual %38 %52 %54
183               OpSelectionMerge %57 None
184               OpBranchConditional %55 %56 %73
185         %56 = OpLabel
186         %60 = OpAccessChain %20 %17 %18 %19
187         %61 = OpLoad %10 %60
188         %62 = OpConvertSToF %23 %61
189         %63 = OpAccessChain %20 %17 %18 %18
190         %64 = OpLoad %10 %63
191         %65 = OpConvertSToF %23 %64
192         %66 = OpAccessChain %20 %17 %18 %18
193         %67 = OpLoad %10 %66
194         %68 = OpConvertSToF %23 %67
195         %69 = OpAccessChain %20 %17 %18 %19
196         %70 = OpLoad %10 %69
197         %71 = OpConvertSToF %23 %70
198         %72 = OpCompositeConstruct %24 %62 %65 %68 %71
199               OpStore %59 %72
200               OpBranch %57
201         %73 = OpLabel
202         %74 = OpAccessChain %20 %17 %18 %18
203         %75 = OpLoad %10 %74
204         %76 = OpConvertSToF %23 %75
205         %77 = OpCompositeConstruct %24 %76 %76 %76 %76
206               OpStore %59 %77
207               OpBranch %57
208         %57 = OpLabel
209               OpReturn
210               OpFunctionEnd
211END
212
213# uniforms for variant
214
215# _GLF_uniform_int_values
216BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
217 0 1
218END
219# _GLF_uniform_uint_values
220BUFFER variant__GLF_uniform_uint_values DATA_TYPE int32[] STD140 DATA
221 5
222END
223# _GLF_uniform_float_values
224BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
225 0.0
226END
227
228BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
229
230PIPELINE graphics variant_pipeline
231  ATTACH variant_vertex_shader
232  ATTACH variant_fragment_shader
233  FRAMEBUFFER_SIZE 256 256
234  BIND BUFFER variant_framebuffer AS color LOCATION 0
235  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 2
236  BIND BUFFER variant__GLF_uniform_uint_values AS uniform DESCRIPTOR_SET 0 BINDING 1
237  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0
238END
239CLEAR_COLOR variant_pipeline 0 0 0 255
240
241CLEAR variant_pipeline
242RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
243
244EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
245