1// Tencent is pleased to support the open source community by making ncnn available.
2//
3// Copyright (C) 2020 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
19struct sfpvec8 { f16vec4 abcd; f16vec4 efgh; };
20#endif
21#if NCNN_fp16_arithmetic
22#extension GL_EXT_shader_explicit_arithmetic_types_float16: require
23#endif
24
25layout (constant_id = 0) const int axis = 0;
26
27#define shape_constant_id_offset 1
28layout (constant_id = shape_constant_id_offset + 0) const int dims = 0;
29layout (constant_id = shape_constant_id_offset + 1) const int w = 0;
30layout (constant_id = shape_constant_id_offset + 2) const int h = 0;
31layout (constant_id = shape_constant_id_offset + 3) const int c = 0;
32layout (constant_id = shape_constant_id_offset + 4) const int cstep = 0;
33
34layout (constant_id = shape_constant_id_offset + 5) const int outdims = 0;
35layout (constant_id = shape_constant_id_offset + 6) const int outw = 0;
36layout (constant_id = shape_constant_id_offset + 7) const int outh = 0;
37layout (constant_id = shape_constant_id_offset + 8) const int outc = 0;
38layout (constant_id = shape_constant_id_offset + 9) const int outcstep = 0;
39
40#if NCNN_image_shader
41layout (binding = 0) uniform unfp sampler3D bottom_blob_3d;
42layout (binding = 1, imfmtc4) writeonly uniform unfp image3D top_blob_3d;
43#else
44layout (binding = 0) readonly buffer bottom_blob { sfpvec8 bottom_blob_data[]; };
45layout (binding = 1) writeonly buffer top_blob { sfpvec8 top_blob_data[]; };
46#endif
47
48layout (push_constant) uniform parameter
49{
50    int dims;
51    int w;
52    int h;
53    int c;
54    int cstep;
55
56    int outdims;
57    int outw;
58    int outh;
59    int outc;
60    int outcstep;
61
62    int offset;
63} p;
64
65void main()
66{
67    int gx = int(gl_GlobalInvocationID.x);
68    int gy = int(gl_GlobalInvocationID.y);
69    int gz = int(gl_GlobalInvocationID.z);
70
71    if (gx >= psc(outw) || gy >= psc(outh) || gz >= psc(outc))
72        return;
73    int positive_axis = axis < 0 ? psc(dims) + axis : axis;
74
75    ivec3 gxyz = ivec3(gx, gy, gz);
76
77    gxyz[psc(dims) - 1 - positive_axis] += p.offset;
78
79#if NCNN_image_shader
80    image3d_cp8(top_blob_3d, ivec3(gx, gy, gz), bottom_blob_3d, gxyz);
81#else
82    const int gi = gz * psc(outcstep) + gy * psc(outw) + gx;
83
84    int v_offset = gxyz.z * psc(cstep) + gxyz.y * psc(w) + gxyz.x;
85
86    buffer_cp8(top_blob_data, gi, bottom_blob_data, v_offset);
87#endif
88}
89