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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 const folding 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_0 _GLF_uniform_int_values[1]
30# #define _int_1 _GLF_uniform_int_values[2]
31# #define _float_9_0 _GLF_uniform_float_values[0]
32#
33# precision highp float;
34# precision highp int;
35#
36# // Contents of _GLF_uniform_float_values: 9.0
37# layout(set = 0, binding = 0) uniform buf0
38# {
39#     float _GLF_uniform_float_values[1];
40# };
41#
42# // Contents of _GLF_uniform_int_values: [10, 0, 1]
43# layout(set = 0, binding = 1) uniform buf1
44# {
45#     int _GLF_uniform_int_values[3];
46# };
47#
48# layout(location = 0) out vec4 _GLF_color;
49#
50# void main()
51# {
52#     float arr[10];
53#     for (int i = _int_0; i < _int_10; i++)
54#     {
55#         arr[i] = float(i);
56#     }
57#
58#     float f = arr[bitfieldInsert(9, 0, 0, 0) / 1];
59#     if (f == _float_9_0)
60#     {
61#         _GLF_color = vec4(_int_1, _int_0, _int_0, 1);
62#     }
63#     else
64#     {
65#         _GLF_color = vec4(0);
66#     }
67# }
68SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
69; SPIR-V
70; Version: 1.0
71; Generator: Khronos Glslang Reference Front End; 8
72; Bound: 78
73; Schema: 0
74               OpCapability Shader
75          %1 = OpExtInstImport "GLSL.std.450"
76               OpMemoryModel Logical GLSL450
77               OpEntryPoint Fragment %4 "main" %62
78               OpExecutionMode %4 OriginUpperLeft
79               OpSource ESSL 310
80               OpName %4 "main"
81               OpName %8 "i"
82               OpName %12 "buf1"
83               OpMemberName %12 0 "_GLF_uniform_int_values"
84               OpName %14 ""
85               OpName %34 "arr"
86               OpName %42 "f"
87               OpName %51 "buf0"
88               OpMemberName %51 0 "_GLF_uniform_float_values"
89               OpName %53 ""
90               OpName %62 "_GLF_color"
91               OpDecorate %11 ArrayStride 16
92               OpMemberDecorate %12 0 Offset 0
93               OpDecorate %12 Block
94               OpDecorate %14 DescriptorSet 0
95               OpDecorate %14 Binding 1
96               OpDecorate %50 ArrayStride 16
97               OpMemberDecorate %51 0 Offset 0
98               OpDecorate %51 Block
99               OpDecorate %53 DescriptorSet 0
100               OpDecorate %53 Binding 0
101               OpDecorate %62 Location 0
102          %2 = OpTypeVoid
103          %3 = OpTypeFunction %2
104          %6 = OpTypeInt 32 1
105          %7 = OpTypePointer Function %6
106          %9 = OpTypeInt 32 0
107         %10 = OpConstant %9 3
108         %11 = OpTypeArray %6 %10
109         %12 = OpTypeStruct %11
110         %13 = OpTypePointer Uniform %12
111         %14 = OpVariable %13 Uniform
112         %15 = OpConstant %6 0
113         %16 = OpConstant %6 1
114         %17 = OpTypePointer Uniform %6
115         %28 = OpTypeBool
116         %30 = OpTypeFloat 32
117         %31 = OpConstant %9 10
118         %32 = OpTypeArray %30 %31
119         %33 = OpTypePointer Function %32
120         %38 = OpTypePointer Function %30
121         %43 = OpConstant %6 9
122         %49 = OpConstant %9 1
123         %50 = OpTypeArray %30 %49
124         %51 = OpTypeStruct %50
125         %52 = OpTypePointer Uniform %51
126         %53 = OpVariable %52 Uniform
127         %54 = OpTypePointer Uniform %30
128         %60 = OpTypeVector %30 4
129         %61 = OpTypePointer Output %60
130         %62 = OpVariable %61 Output
131         %63 = OpConstant %6 2
132         %73 = OpConstant %30 1
133         %76 = OpConstant %30 0
134         %77 = OpConstantComposite %60 %76 %76 %76 %76
135          %4 = OpFunction %2 None %3
136          %5 = OpLabel
137          %8 = OpVariable %7 Function
138         %34 = OpVariable %33 Function
139         %42 = OpVariable %38 Function
140         %18 = OpAccessChain %17 %14 %15 %16
141         %19 = OpLoad %6 %18
142               OpStore %8 %19
143               OpBranch %20
144         %20 = OpLabel
145               OpLoopMerge %22 %23 None
146               OpBranch %24
147         %24 = OpLabel
148         %25 = OpLoad %6 %8
149         %26 = OpAccessChain %17 %14 %15 %15
150         %27 = OpLoad %6 %26
151         %29 = OpSLessThan %28 %25 %27
152               OpBranchConditional %29 %21 %22
153         %21 = OpLabel
154         %35 = OpLoad %6 %8
155         %36 = OpLoad %6 %8
156         %37 = OpConvertSToF %30 %36
157         %39 = OpAccessChain %38 %34 %35
158               OpStore %39 %37
159               OpBranch %23
160         %23 = OpLabel
161         %40 = OpLoad %6 %8
162         %41 = OpIAdd %6 %40 %16
163               OpStore %8 %41
164               OpBranch %20
165         %22 = OpLabel
166         %44 = OpBitFieldInsert %6 %43 %15 %15 %15
167         %45 = OpSDiv %6 %44 %16
168         %46 = OpAccessChain %38 %34 %45
169         %47 = OpLoad %30 %46
170               OpStore %42 %47
171         %48 = OpLoad %30 %42
172         %55 = OpAccessChain %54 %53 %15 %15
173         %56 = OpLoad %30 %55
174         %57 = OpFOrdEqual %28 %48 %56
175               OpSelectionMerge %59 None
176               OpBranchConditional %57 %58 %75
177         %58 = OpLabel
178         %64 = OpAccessChain %17 %14 %15 %63
179         %65 = OpLoad %6 %64
180         %66 = OpConvertSToF %30 %65
181         %67 = OpAccessChain %17 %14 %15 %16
182         %68 = OpLoad %6 %67
183         %69 = OpConvertSToF %30 %68
184         %70 = OpAccessChain %17 %14 %15 %16
185         %71 = OpLoad %6 %70
186         %72 = OpConvertSToF %30 %71
187         %74 = OpCompositeConstruct %60 %66 %69 %72 %73
188               OpStore %62 %74
189               OpBranch %59
190         %75 = OpLabel
191               OpStore %62 %77
192               OpBranch %59
193         %59 = OpLabel
194               OpReturn
195               OpFunctionEnd
196END
197
198# uniforms for variant
199
200# _GLF_uniform_int_values
201BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
202 10 0 1
203END
204# _GLF_uniform_float_values
205BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
206 9.0
207END
208
209BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
210
211PIPELINE graphics variant_pipeline
212  ATTACH variant_vertex_shader
213  ATTACH variant_fragment_shader
214  FRAMEBUFFER_SIZE 256 256
215  BIND BUFFER variant_framebuffer AS color LOCATION 0
216  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 1
217  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 0
218END
219CLEAR_COLOR variant_pipeline 0 0 0 255
220
221CLEAR variant_pipeline
222RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
223
224EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
225