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 _float_1_0 _GLF_uniform_float_values[0]
30# #define _float_0_0 _GLF_uniform_float_values[1]
31#
32# precision highp float;
33# precision highp int;
34#
35# // Contents of _GLF_uniform_float_values: [1.0, 0.0]
36# layout(set = 0, binding = 0) uniform buf0
37# {
38#     float _GLF_uniform_float_values[2];
39# };
40#
41# // Contents of _GLF_uniform_int_values: 0
42# layout(set = 0, binding = 1) uniform buf1
43# {
44#     int _GLF_uniform_int_values[1];
45# };
46#
47# layout(location = 0) out vec4 _GLF_color;
48#
49# // Contents of resolution: [256.0, 256.0]
50# layout(set = 0, binding = 2) uniform buf2
51# {
52#     vec2 resolution;
53# };
54#
55# void main()
56# {
57#     // v becomes (0, 0).
58#     vec2 v = (mat3(_float_0_0) * vec3(resolution, 1)).xy;
59#
60#     // Always true.
61#     if(v == vec2(_int_0))
62#     {
63#         _GLF_color = vec4(_float_1_0, v, _float_1_0);
64#     }
65#     else
66#     {
67#         _GLF_color = vec4(_int_0);
68#     }
69# }
70SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
71; SPIR-V
72; Version: 1.0
73; Generator: Khronos Glslang Reference Front End; 10
74; Bound: 74
75; Schema: 0
76               OpCapability Shader
77          %1 = OpExtInstImport "GLSL.std.450"
78               OpMemoryModel Logical GLSL450
79               OpEntryPoint Fragment %4 "main" %60
80               OpExecutionMode %4 OriginUpperLeft
81               OpSource ESSL 320
82               OpName %4 "main"
83               OpName %9 "v"
84               OpName %13 "buf0"
85               OpMemberName %13 0 "_GLF_uniform_float_values"
86               OpName %15 ""
87               OpName %30 "buf2"
88               OpMemberName %30 0 "resolution"
89               OpName %32 ""
90               OpName %44 "buf1"
91               OpMemberName %44 0 "_GLF_uniform_int_values"
92               OpName %46 ""
93               OpName %60 "_GLF_color"
94               OpDecorate %12 ArrayStride 16
95               OpMemberDecorate %13 0 Offset 0
96               OpDecorate %13 Block
97               OpDecorate %15 DescriptorSet 0
98               OpDecorate %15 Binding 0
99               OpMemberDecorate %30 0 Offset 0
100               OpDecorate %30 Block
101               OpDecorate %32 DescriptorSet 0
102               OpDecorate %32 Binding 2
103               OpDecorate %43 ArrayStride 16
104               OpMemberDecorate %44 0 Offset 0
105               OpDecorate %44 Block
106               OpDecorate %46 DescriptorSet 0
107               OpDecorate %46 Binding 1
108               OpDecorate %60 Location 0
109          %2 = OpTypeVoid
110          %3 = OpTypeFunction %2
111          %6 = OpTypeFloat 32
112          %7 = OpTypeVector %6 2
113          %8 = OpTypePointer Function %7
114         %10 = OpTypeInt 32 0
115         %11 = OpConstant %10 2
116         %12 = OpTypeArray %6 %11
117         %13 = OpTypeStruct %12
118         %14 = OpTypePointer Uniform %13
119         %15 = OpVariable %14 Uniform
120         %16 = OpTypeInt 32 1
121         %17 = OpConstant %16 0
122         %18 = OpConstant %16 1
123         %19 = OpTypePointer Uniform %6
124         %22 = OpTypeVector %6 3
125         %23 = OpTypeMatrix %22 3
126         %24 = OpConstant %6 1
127         %25 = OpConstant %6 0
128         %30 = OpTypeStruct %7
129         %31 = OpTypePointer Uniform %30
130         %32 = OpVariable %31 Uniform
131         %33 = OpTypePointer Uniform %7
132         %42 = OpConstant %10 1
133         %43 = OpTypeArray %16 %42
134         %44 = OpTypeStruct %43
135         %45 = OpTypePointer Uniform %44
136         %46 = OpVariable %45 Uniform
137         %47 = OpTypePointer Uniform %16
138         %52 = OpTypeBool
139         %53 = OpTypeVector %52 2
140         %58 = OpTypeVector %6 4
141         %59 = OpTypePointer Output %58
142         %60 = OpVariable %59 Output
143          %4 = OpFunction %2 None %3
144          %5 = OpLabel
145          %9 = OpVariable %8 Function
146         %20 = OpAccessChain %19 %15 %17 %18
147         %21 = OpLoad %6 %20
148         %26 = OpCompositeConstruct %22 %21 %25 %25
149         %27 = OpCompositeConstruct %22 %25 %21 %25
150         %28 = OpCompositeConstruct %22 %25 %25 %21
151         %29 = OpCompositeConstruct %23 %26 %27 %28
152         %34 = OpAccessChain %33 %32 %17
153         %35 = OpLoad %7 %34
154         %36 = OpCompositeExtract %6 %35 0
155         %37 = OpCompositeExtract %6 %35 1
156         %38 = OpCompositeConstruct %22 %36 %37 %24
157         %39 = OpMatrixTimesVector %22 %29 %38
158         %40 = OpVectorShuffle %7 %39 %39 0 1
159               OpStore %9 %40
160         %41 = OpLoad %7 %9
161         %48 = OpAccessChain %47 %46 %17 %17
162         %49 = OpLoad %16 %48
163         %50 = OpConvertSToF %6 %49
164         %51 = OpCompositeConstruct %7 %50 %50
165         %54 = OpFOrdEqual %53 %41 %51
166         %55 = OpAll %52 %54
167               OpSelectionMerge %57 None
168               OpBranchConditional %55 %56 %69
169         %56 = OpLabel
170         %61 = OpAccessChain %19 %15 %17 %17
171         %62 = OpLoad %6 %61
172         %63 = OpLoad %7 %9
173         %64 = OpAccessChain %19 %15 %17 %17
174         %65 = OpLoad %6 %64
175         %66 = OpCompositeExtract %6 %63 0
176         %67 = OpCompositeExtract %6 %63 1
177         %68 = OpCompositeConstruct %58 %62 %66 %67 %65
178               OpStore %60 %68
179               OpBranch %57
180         %69 = OpLabel
181         %70 = OpAccessChain %47 %46 %17 %17
182         %71 = OpLoad %16 %70
183         %72 = OpConvertSToF %6 %71
184         %73 = OpCompositeConstruct %58 %72 %72 %72 %72
185               OpStore %60 %73
186               OpBranch %57
187         %57 = OpLabel
188               OpReturn
189               OpFunctionEnd
190END
191
192# uniforms for variant
193
194# resolution
195BUFFER variant_resolution DATA_TYPE vec2<float> STD140 DATA
196 256.0 256.0
197END
198# _GLF_uniform_int_values
199BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
200 0
201END
202# _GLF_uniform_float_values
203BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
204 1.0 0.0
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_resolution AS uniform DESCRIPTOR_SET 0 BINDING 2
215  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1
216  BIND BUFFER variant__GLF_uniform_float_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