1// Tencent is pleased to support the open source community by making ncnn available.
2//
3// Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
4//
5// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
6// in compliance with the License. You may obtain a copy of the License at
7//
8// https://opensource.org/licenses/BSD-3-Clause
9//
10// Unless required by applicable law or agreed to in writing, software distributed
11// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
12// CONDITIONS OF ANY KIND, either express or implied. See the License for the
13// specific language governing permissions and limitations under the License.
14
15#version 450
16
17#if NCNN_fp16_storage
18#extension GL_EXT_shader_16bit_storage: require
19#endif
20#if NCNN_fp16_arithmetic
21#extension GL_EXT_shader_explicit_arithmetic_types_float16: require
22#endif
23
24layout (constant_id = 0) const int axis = 0;
25
26#define shape_constant_id_offset 1
27layout (constant_id = shape_constant_id_offset + 0) const int dims = 0;
28layout (constant_id = shape_constant_id_offset + 1) const int w = 0;
29layout (constant_id = shape_constant_id_offset + 2) const int h = 0;
30layout (constant_id = shape_constant_id_offset + 3) const int c = 0;
31layout (constant_id = shape_constant_id_offset + 4) const int cstep = 0;
32
33layout (constant_id = shape_constant_id_offset + 5) const int outdims = 0;
34layout (constant_id = shape_constant_id_offset + 6) const int outw = 0;
35layout (constant_id = shape_constant_id_offset + 7) const int outh = 0;
36layout (constant_id = shape_constant_id_offset + 8) const int outc = 0;
37layout (constant_id = shape_constant_id_offset + 9) const int outcstep = 0;
38
39#if NCNN_image_shader
40layout (binding = 0) uniform unfp sampler3D bottom_blob_3d;
41layout (binding = 1, imfmtc4) writeonly uniform unfp image3D top_blob_3d;
42#else
43layout (binding = 0) readonly buffer bottom_blob { sfpvec4 bottom_blob_data[]; };
44layout (binding = 1) writeonly buffer top_blob { sfpvec4 top_blob_data[]; };
45#endif
46
47layout (push_constant) uniform parameter
48{
49    int dims;
50    int w;
51    int h;
52    int c;
53    int cstep;
54
55    int outdims;
56    int outw;
57    int outh;
58    int outc;
59    int outcstep;
60
61    int offset;
62} p;
63
64void main()
65{
66    int gx = int(gl_GlobalInvocationID.x);
67    int gy = int(gl_GlobalInvocationID.y);
68    int gz = int(gl_GlobalInvocationID.z);
69
70    if (gx >= psc(outw) || gy >= psc(outh) || gz >= psc(outc))
71        return;
72    int positive_axis = axis < 0 ? psc(dims) + axis : axis;
73
74    ivec3 gxyz = ivec3(gx, gy, gz);
75
76    gxyz[psc(dims) - 1 - positive_axis] += p.offset;
77
78#if NCNN_image_shader
79    image3d_cp4(top_blob_3d, ivec3(gx, gy, gz), bottom_blob_3d, gxyz);
80#else
81    const int gi = gz * psc(outcstep) + gy * psc(outw) + gx;
82
83    int v_offset = gxyz.z * psc(cstep) + gxyz.y * psc(w) + gxyz.x;
84
85    buffer_cp4(top_blob_data, gi, bottom_blob_data, v_offset);
86#endif
87}
88