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 LLVM 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 _float_0_0 _GLF_uniform_float_values[0]
31# #define _float_1_0 _GLF_uniform_float_values[1]
32#
33# precision highp float;
34# precision highp int;
35#
36# // Contents of _GLF_uniform_int_values: [0, 1]
37# layout(set = 0, binding = 0) uniform buf0
38# {
39#     int _GLF_uniform_int_values[2];
40# };
41#
42# // Contents of _GLF_uniform_float_values: [0.0, 1.0]
43# layout(set = 0, binding = 1) uniform buf1
44# {
45#     float _GLF_uniform_float_values[2];
46# };
47#
48# layout(location = 0) out vec4 _GLF_color;
49#
50# // Contents of zero: 0
51# layout(set = 0, binding = 2) uniform buf2
52# {
53#     int zero;
54# };
55#
56# void main()
57# {
58#     // Results are undefined.
59#     float f = pow(- _float_1_0, sinh(1.0));
60#
61#     // The value of f doesn't matter because the right side is always true.
62#     if(f == _float_0_0 || zero == _int_0)
63#     {
64#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
65#     }
66#     else
67#     {
68#         _GLF_color = vec4(_int_0);
69#     }
70# }
71SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
72; SPIR-V
73; Version: 1.0
74; Generator: Khronos Glslang Reference Front End; 10
75; Bound: 70
76; Schema: 0
77               OpCapability Shader
78          %1 = OpExtInstImport "GLSL.std.450"
79               OpMemoryModel Logical GLSL450
80               OpEntryPoint Fragment %4 "main" %51
81               OpExecutionMode %4 OriginUpperLeft
82               OpSource ESSL 320
83               OpName %4 "main"
84               OpName %8 "f"
85               OpName %12 "buf1"
86               OpMemberName %12 0 "_GLF_uniform_float_values"
87               OpName %14 ""
88               OpName %33 "buf2"
89               OpMemberName %33 0 "zero"
90               OpName %35 ""
91               OpName %40 "buf0"
92               OpMemberName %40 0 "_GLF_uniform_int_values"
93               OpName %42 ""
94               OpName %51 "_GLF_color"
95               OpDecorate %11 ArrayStride 16
96               OpMemberDecorate %12 0 Offset 0
97               OpDecorate %12 Block
98               OpDecorate %14 DescriptorSet 0
99               OpDecorate %14 Binding 1
100               OpMemberDecorate %33 0 Offset 0
101               OpDecorate %33 Block
102               OpDecorate %35 DescriptorSet 0
103               OpDecorate %35 Binding 2
104               OpDecorate %39 ArrayStride 16
105               OpMemberDecorate %40 0 Offset 0
106               OpDecorate %40 Block
107               OpDecorate %42 DescriptorSet 0
108               OpDecorate %42 Binding 0
109               OpDecorate %51 Location 0
110          %2 = OpTypeVoid
111          %3 = OpTypeFunction %2
112          %6 = OpTypeFloat 32
113          %7 = OpTypePointer Function %6
114          %9 = OpTypeInt 32 0
115         %10 = OpConstant %9 2
116         %11 = OpTypeArray %6 %10
117         %12 = OpTypeStruct %11
118         %13 = OpTypePointer Uniform %12
119         %14 = OpVariable %13 Uniform
120         %15 = OpTypeInt 32 1
121         %16 = OpConstant %15 0
122         %17 = OpConstant %15 1
123         %18 = OpTypePointer Uniform %6
124         %22 = OpConstant %6 1
125         %25 = OpTypeBool
126         %33 = OpTypeStruct %15
127         %34 = OpTypePointer Uniform %33
128         %35 = OpVariable %34 Uniform
129         %36 = OpTypePointer Uniform %15
130         %39 = OpTypeArray %15 %10
131         %40 = OpTypeStruct %39
132         %41 = OpTypePointer Uniform %40
133         %42 = OpVariable %41 Uniform
134         %49 = OpTypeVector %6 4
135         %50 = OpTypePointer Output %49
136         %51 = OpVariable %50 Output
137          %4 = OpFunction %2 None %3
138          %5 = OpLabel
139          %8 = OpVariable %7 Function
140         %19 = OpAccessChain %18 %14 %16 %17
141         %20 = OpLoad %6 %19
142         %21 = OpFNegate %6 %20
143         %23 = OpExtInst %6 %1 Sinh %22
144         %24 = OpExtInst %6 %1 Pow %21 %23
145               OpStore %8 %24
146         %26 = OpLoad %6 %8
147         %27 = OpAccessChain %18 %14 %16 %16
148         %28 = OpLoad %6 %27
149         %29 = OpFOrdEqual %25 %26 %28
150         %30 = OpLogicalNot %25 %29
151               OpSelectionMerge %32 None
152               OpBranchConditional %30 %31 %32
153         %31 = OpLabel
154         %37 = OpAccessChain %36 %35 %16
155         %38 = OpLoad %15 %37
156         %43 = OpAccessChain %36 %42 %16 %16
157         %44 = OpLoad %15 %43
158         %45 = OpIEqual %25 %38 %44
159               OpBranch %32
160         %32 = OpLabel
161         %46 = OpPhi %25 %29 %5 %45 %31
162               OpSelectionMerge %48 None
163               OpBranchConditional %46 %47 %65
164         %47 = OpLabel
165         %52 = OpAccessChain %36 %42 %16 %17
166         %53 = OpLoad %15 %52
167         %54 = OpConvertSToF %6 %53
168         %55 = OpAccessChain %36 %42 %16 %16
169         %56 = OpLoad %15 %55
170         %57 = OpConvertSToF %6 %56
171         %58 = OpAccessChain %36 %42 %16 %16
172         %59 = OpLoad %15 %58
173         %60 = OpConvertSToF %6 %59
174         %61 = OpAccessChain %36 %42 %16 %17
175         %62 = OpLoad %15 %61
176         %63 = OpConvertSToF %6 %62
177         %64 = OpCompositeConstruct %49 %54 %57 %60 %63
178               OpStore %51 %64
179               OpBranch %48
180         %65 = OpLabel
181         %66 = OpAccessChain %36 %42 %16 %16
182         %67 = OpLoad %15 %66
183         %68 = OpConvertSToF %6 %67
184         %69 = OpCompositeConstruct %49 %68 %68 %68 %68
185               OpStore %51 %69
186               OpBranch %48
187         %48 = OpLabel
188               OpReturn
189               OpFunctionEnd
190END
191
192# uniforms for variant
193
194# zero
195BUFFER variant_zero DATA_TYPE int32 STD140 DATA
196 0
197END
198# _GLF_uniform_float_values
199BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
200 0.0 1.0
201END
202# _GLF_uniform_int_values
203BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
204 0 1
205END
206
207BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
208
209PIPELINE graphics variant_pipeline
210  ATTACH variant_vertex_shader
211  ATTACH variant_fragment_shader
212  FRAMEBUFFER_SIZE 256 256
213  BIND BUFFER variant_framebuffer AS color LOCATION 0
214  BIND BUFFER variant_zero AS uniform DESCRIPTOR_SET 0 BINDING 2
215  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1
216  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
217END
218CLEAR_COLOR variant_pipeline 0 0 0 255
219
220CLEAR variant_pipeline
221RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
222
223EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
224