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_1 _GLF_uniform_int_values[0]
29# #define _int_0 _GLF_uniform_int_values[1]
30# #define _float_0_0 _GLF_uniform_float_values[0]
31#
32# precision highp float;
33#
34# precision highp int;
35#
36# // Contents of _GLF_uniform_int_values: [1, 0]
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
43# layout(set = 0, binding = 1) uniform buf1
44# {
45#     float _GLF_uniform_float_values[1];
46# };
47#
48# layout(location = 0) out vec4 _GLF_color;
49#
50# void main()
51# {
52#     // This results in an undefined value, but not in undefined behavior.
53#     float f = pow(40.33, ldexp(1.0, 98980));
54#
55#     if (_int_1 == (_int_1 + _int_0) || f > _float_0_0)
56#         _GLF_color = vec4(_int_1, _int_0, _int_0, _int_1);
57#     else
58#         _GLF_color = vec4(_int_0);
59# }
60SHADER fragment variant_fragment_shader SPIRV-ASM TARGET_ENV spv1.0
61; SPIR-V
62; Version: 1.0
63; Generator: Khronos Glslang Reference Front End; 8
64; Bound: 70
65; Schema: 0
66               OpCapability Shader
67          %1 = OpExtInstImport "GLSL.std.450"
68               OpMemoryModel Logical GLSL450
69               OpEntryPoint Fragment %4 "main" %51
70               OpExecutionMode %4 OriginUpperLeft
71               OpSource ESSL 310
72               OpName %4 "main"
73               OpName %8 "f"
74               OpName %19 "buf0"
75               OpMemberName %19 0 "_GLF_uniform_int_values"
76               OpName %21 ""
77               OpName %39 "buf1"
78               OpMemberName %39 0 "_GLF_uniform_float_values"
79               OpName %41 ""
80               OpName %51 "_GLF_color"
81               OpDecorate %18 ArrayStride 16
82               OpMemberDecorate %19 0 Offset 0
83               OpDecorate %19 Block
84               OpDecorate %21 DescriptorSet 0
85               OpDecorate %21 Binding 0
86               OpDecorate %38 ArrayStride 16
87               OpMemberDecorate %39 0 Offset 0
88               OpDecorate %39 Block
89               OpDecorate %41 DescriptorSet 0
90               OpDecorate %41 Binding 1
91               OpDecorate %51 Location 0
92          %2 = OpTypeVoid
93          %3 = OpTypeFunction %2
94          %6 = OpTypeFloat 32
95          %7 = OpTypePointer Function %6
96          %9 = OpConstant %6 40.3300018
97         %10 = OpConstant %6 1
98         %11 = OpTypeInt 32 1
99         %12 = OpConstant %11 98980
100         %15 = OpTypeBool
101         %16 = OpTypeInt 32 0
102         %17 = OpConstant %16 2
103         %18 = OpTypeArray %11 %17
104         %19 = OpTypeStruct %18
105         %20 = OpTypePointer Uniform %19
106         %21 = OpVariable %20 Uniform
107         %22 = OpConstant %11 0
108         %23 = OpTypePointer Uniform %11
109         %28 = OpConstant %11 1
110         %37 = OpConstant %16 1
111         %38 = OpTypeArray %6 %37
112         %39 = OpTypeStruct %38
113         %40 = OpTypePointer Uniform %39
114         %41 = OpVariable %40 Uniform
115         %42 = OpTypePointer Uniform %6
116         %49 = OpTypeVector %6 4
117         %50 = OpTypePointer Output %49
118         %51 = OpVariable %50 Output
119          %4 = OpFunction %2 None %3
120          %5 = OpLabel
121          %8 = OpVariable %7 Function
122         %13 = OpExtInst %6 %1 Ldexp %10 %12
123         %14 = OpExtInst %6 %1 Pow %9 %13
124               OpStore %8 %14
125         %24 = OpAccessChain %23 %21 %22 %22
126         %25 = OpLoad %11 %24
127         %26 = OpAccessChain %23 %21 %22 %22
128         %27 = OpLoad %11 %26
129         %29 = OpAccessChain %23 %21 %22 %28
130         %30 = OpLoad %11 %29
131         %31 = OpIAdd %11 %27 %30
132         %32 = OpIEqual %15 %25 %31
133         %33 = OpLogicalNot %15 %32
134               OpSelectionMerge %35 None
135               OpBranchConditional %33 %34 %35
136         %34 = OpLabel
137         %36 = OpLoad %6 %8
138         %43 = OpAccessChain %42 %41 %22 %22
139         %44 = OpLoad %6 %43
140         %45 = OpFOrdGreaterThan %15 %36 %44
141               OpBranch %35
142         %35 = OpLabel
143         %46 = OpPhi %15 %32 %5 %45 %34
144               OpSelectionMerge %48 None
145               OpBranchConditional %46 %47 %65
146         %47 = OpLabel
147         %52 = OpAccessChain %23 %21 %22 %22
148         %53 = OpLoad %11 %52
149         %54 = OpConvertSToF %6 %53
150         %55 = OpAccessChain %23 %21 %22 %28
151         %56 = OpLoad %11 %55
152         %57 = OpConvertSToF %6 %56
153         %58 = OpAccessChain %23 %21 %22 %28
154         %59 = OpLoad %11 %58
155         %60 = OpConvertSToF %6 %59
156         %61 = OpAccessChain %23 %21 %22 %22
157         %62 = OpLoad %11 %61
158         %63 = OpConvertSToF %6 %62
159         %64 = OpCompositeConstruct %49 %54 %57 %60 %63
160               OpStore %51 %64
161               OpBranch %48
162         %65 = OpLabel
163         %66 = OpAccessChain %23 %21 %22 %28
164         %67 = OpLoad %11 %66
165         %68 = OpConvertSToF %6 %67
166         %69 = OpCompositeConstruct %49 %68 %68 %68 %68
167               OpStore %51 %69
168               OpBranch %48
169         %48 = OpLabel
170               OpReturn
171               OpFunctionEnd
172END
173
174# uniforms for variant
175
176# _GLF_uniform_float_values
177BUFFER variant__GLF_uniform_float_values DATA_TYPE float[] STD140 DATA
178 0.0
179END
180# _GLF_uniform_int_values
181BUFFER variant__GLF_uniform_int_values DATA_TYPE int32[] STD140 DATA
182 1 0
183END
184
185BUFFER variant_framebuffer FORMAT B8G8R8A8_UNORM
186
187PIPELINE graphics variant_pipeline
188  ATTACH variant_vertex_shader
189  ATTACH variant_fragment_shader
190  FRAMEBUFFER_SIZE 256 256
191  BIND BUFFER variant_framebuffer AS color LOCATION 0
192  BIND BUFFER variant__GLF_uniform_float_values AS uniform DESCRIPTOR_SET 0 BINDING 1
193  BIND BUFFER variant__GLF_uniform_int_values AS uniform DESCRIPTOR_SET 0 BINDING 0
194END
195CLEAR_COLOR variant_pipeline 0 0 0 255
196
197CLEAR variant_pipeline
198RUN variant_pipeline DRAW_RECT POS 0 0 SIZE 256 256
199
200EXPECT variant_framebuffer IDX 0 0 SIZE 256 256 EQ_RGBA 255 0 0 255
201