ncnn/src/layer/vulkan/shader/scale_pack4.comp

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//
// Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
//
// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
// in compliance with the License. You may obtain a copy of the License at
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// https://opensource.org/licenses/BSD-3-Clause
//
// Unless required by applicable law or agreed to in writing, software distributed
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// specific language governing permissions and limitations under the License.

#version 450

#if NCNN_fp16_storage
#extension GL_EXT_shader_16bit_storage: require
#endif
#if NCNN_fp16_arithmetic
#extension GL_EXT_shader_explicit_arithmetic_types_float16: require
#endif

layout (constant_id = 0) const int bias_term = 0;

#define shape_constant_id_offset 1
layout (constant_id = shape_constant_id_offset + 0) const int dims = 0;
layout (constant_id = shape_constant_id_offset + 1) const int w = 0;
layout (constant_id = shape_constant_id_offset + 2) const int h = 0;
layout (constant_id = shape_constant_id_offset + 3) const int c = 0;
layout (constant_id = shape_constant_id_offset + 4) const int cstep = 0;

#if NCNN_image_shader
layout (binding = 0) uniform unfp sampler3D bottom_blob_3d;
layout (binding = 1, imfmtc4) writeonly uniform unfp image3D top_blob_3d;
layout (binding = 2) uniform unfp sampler3D scale_blob;
layout (binding = 3) uniform unfp sampler3D bias_blob;
#else
layout (binding = 0) buffer bottom_top_blob { sfpvec4 bottom_top_blob_data[]; };
layout (binding = 1) readonly buffer scale_blob { sfpvec4 scale_blob_data[]; };
layout (binding = 2) readonly buffer bias_blob { sfpvec4 bias_blob_data[]; };
#endif

layout (push_constant) uniform parameter
{
    int dims;
    int w;
    int h;
    int c;
    int cstep;
} p;

void main()
{
    int gx = int(gl_GlobalInvocationID.x);
    int gy = int(gl_GlobalInvocationID.y);
    int gz = int(gl_GlobalInvocationID.z);

    if (gx >= psc(w) || gy >= psc(h) || gz >= psc(c))
        return;

#if NCNN_image_shader
    afpvec4 v = image3d_ld4(bottom_blob_3d, ivec3(gx, gy, gz));
#else
    const int gi = gz * psc(cstep) + gy * psc(w) + gx;

    afpvec4 v = buffer_ld4(bottom_top_blob_data, gi);
#endif

    const ivec3 gxyz = ivec3(gx, gy, gz);
    const int abi = gxyz[psc(dims) - 1];

#if NCNN_image_shader
    if (bias_term == 1)
        v = image3d_ld4(scale_blob, ivec3(abi, 0, 0)) * v + image3d_ld4(bias_blob, ivec3(abi, 0, 0));
    else
        v = image3d_ld4(scale_blob, ivec3(abi, 0, 0)) * v;
#else
    if (bias_term == 1)
        v = buffer_ld4(scale_blob_data, abi) * v + buffer_ld4(bias_blob_data, abi);
    else
        v = buffer_ld4(scale_blob_data, abi) * v;
#endif

#if NCNN_image_shader
    image3d_st4(top_blob_3d, ivec3(gx, gy, gz), v);
#else
    buffer_st4(bottom_top_blob_data, gi, v);
#endif
}