ncnn

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

24
layout (constant_id = 0) const int region_type = 0;
25
layout (constant_id = 1) const int pad_head = 0;
26
layout (constant_id = 2) const int pad_tail = 0;
27

28
#define shape_constant_id_offset 3
29
layout (constant_id = shape_constant_id_offset + 0) const int dims = 0;
30
layout (constant_id = shape_constant_id_offset + 1) const int w = 0;
31
layout (constant_id = shape_constant_id_offset + 2) const int h = 0;
32
layout (constant_id = shape_constant_id_offset + 3) const int c = 0;
33
layout (constant_id = shape_constant_id_offset + 4) const int cstep = 0;
34

35
layout (constant_id = shape_constant_id_offset + 5) const int outdims = 0;
36
layout (constant_id = shape_constant_id_offset + 6) const int outw = 0;
37
layout (constant_id = shape_constant_id_offset + 7) const int outh = 0;
38
layout (constant_id = shape_constant_id_offset + 8) const int outc = 0;
39
layout (constant_id = shape_constant_id_offset + 9) const int outcstep = 0;
40

41
#if NCNN_image_shader
42
layout (binding = 0) uniform unfp sampler3D bottom_blob;
43
layout (binding = 1, rgba32f) writeonly uniform highp image3D square_workspace;
44
#else
45
layout (binding = 0) readonly buffer bottom_blob { sfpvec4 bottom_blob_data[]; };
46
layout (binding = 1) writeonly buffer square_workspace { vec4 square_workspace_data[]; };
47
#endif
48

49
layout (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

64
void 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 == 1 only
74

75
    afpvec4 res;
76

77
    int x = gx - pad_head;
78
    int y = gy - pad_head;
79

80
    if (x >= 0 && x < psc(w) && y >= 0 && y < psc(h))
81
    {
82
#if NCNN_image_shader
83
        afpvec4 v = image3d_ld4(bottom_blob, ivec3(x, y, gz));
84
#else
85
        int v_offset = gz * psc(cstep) + y * psc(w) + x;
86
        afpvec4 v = buffer_ld4(bottom_blob_data, v_offset);
87
#endif
88
        res = v * v;
89
    }
90
    else
91
    {
92
        res = afpvec4(0.f);
93
    }
94

95
#if NCNN_image_shader
96
    imageStore(square_workspace, ivec3(gx, gy, gz), res);
97
#else
98
    const int gi = gz * psc(outcstep) + gy * psc(outw) + gx;
99

100
    square_workspace_data[gi] = vec4(res);
101
#endif
102
}
103