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 region_type = 0;
25layout (constant_id = 1) const int pad_head = 0;
26layout (constant_id = 2) const int pad_tail = 0;
27
28#define shape_constant_id_offset 3
29layout (constant_id = shape_constant_id_offset + 0) const int dims = 0;
30layout (constant_id = shape_constant_id_offset + 1) const int w = 0;
31layout (constant_id = shape_constant_id_offset + 2) const int h = 0;
32layout (constant_id = shape_constant_id_offset + 3) const int c = 0;
33layout (constant_id = shape_constant_id_offset + 4) const int cstep = 0;
34
35layout (constant_id = shape_constant_id_offset + 5) const int outdims = 0;
36layout (constant_id = shape_constant_id_offset + 6) const int outw = 0;
37layout (constant_id = shape_constant_id_offset + 7) const int outh = 0;
38layout (constant_id = shape_constant_id_offset + 8) const int outc = 0;
39layout (constant_id = shape_constant_id_offset + 9) const int outcstep = 0;
40
41#if NCNN_image_shader
42layout (binding = 0) uniform unfp sampler3D bottom_blob;
43layout (binding = 1, r32f) writeonly uniform highp image3D square_workspace;
44#else
45layout (binding = 0) readonly buffer bottom_blob { sfpvec4 bottom_blob_data[]; };
46layout (binding = 1) writeonly buffer square_workspace { float square_workspace_data[]; };
47#endif
48
49layout (push_constant) uniform parameter
50{
51    int dims;
52    int w;
53    int h;
54    int c;
55    int cstep;
56
57    int outdims;
58    int outw;
59    int outh;
60    int outc;
61    int outcstep;
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
73    // support region_type == 0 only
74
75    afp res;
76
77    int z = int(floor(afp(gz - pad_head) / 4.f));
78
79    if (z >= 0 && z < psc(c))
80    {
81#if NCNN_image_shader
82        afpvec4 v4 = image3d_ld4(bottom_blob, ivec3(gx, gy, z));
83#else
84        int v_offset = z * psc(cstep) + gy * psc(w) + gx;
85        afpvec4 v4 = buffer_ld4(bottom_blob_data, v_offset);
86#endif
87
88        int lane = (gz - pad_head) % 4;
89
90        afp v = v4[lane];
91
92        res = v * v;
93    }
94    else
95    {
96        res = afp(0.f);
97    }
98
99#if NCNN_image_shader
100    imageStore(square_workspace, ivec3(gx, gy, gz), vec4(float(res)));
101#else
102    const int gi = gz * psc(outcstep) + gy * psc(outw) + gx;
103
104    square_workspace_data[gi] = float(res);
105#endif
106}
107