ncnn

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// Tencent is pleased to support the open source community by making ncnn available.
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//
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// Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
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//
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// Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
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// in compliance with the License. You may obtain a copy of the License at
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//
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// https://opensource.org/licenses/BSD-3-Clause
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//
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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#include "hardswish_vulkan.h"
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#include "layer_shader_type.h"
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namespace ncnn {
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HardSwish_vulkan::HardSwish_vulkan()
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{
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    support_vulkan = true;
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    support_image_storage = true;
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    pipeline_hardswish = 0;
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    pipeline_hardswish_pack4 = 0;
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    pipeline_hardswish_pack8 = 0;
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}
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int HardSwish_vulkan::create_pipeline(const Option& opt)
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{
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    const Mat& shape = top_shapes.empty() ? Mat() : top_shapes[0];
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    int elempack = 1;
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    if (shape.dims == 1) elempack = opt.use_shader_pack8 && shape.w % 8 == 0 ? 8 : shape.w % 4 == 0 ? 4 : 1;
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    if (shape.dims == 2) elempack = opt.use_shader_pack8 && shape.h % 8 == 0 ? 8 : shape.h % 4 == 0 ? 4 : 1;
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    if (shape.dims == 3) elempack = opt.use_shader_pack8 && shape.c % 8 == 0 ? 8 : shape.c % 4 == 0 ? 4 : 1;
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    size_t elemsize;
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    if (opt.use_fp16_storage)
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    {
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        elemsize = elempack * 2u;
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    }
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    else if (opt.use_fp16_packed)
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    {
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        elemsize = elempack == 1 ? 4u : elempack * 2u;
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    }
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    else
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    {
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        elemsize = elempack * 4u;
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    }
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    Mat shape_packed;
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    if (shape.dims == 1) shape_packed = Mat(shape.w / elempack, (void*)0, elemsize, elempack);
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    if (shape.dims == 2) shape_packed = Mat(shape.w, shape.h / elempack, (void*)0, elemsize, elempack);
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    if (shape.dims == 3) shape_packed = Mat(shape.w, shape.h, shape.c / elempack, (void*)0, elemsize, elempack);
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    std::vector<vk_specialization_type> specializations(2 + 5);
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    specializations[0].f = alpha;
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    specializations[1].f = beta;
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    specializations[2 + 0].i = shape_packed.dims;
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    specializations[2 + 1].i = shape_packed.w;
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    specializations[2 + 2].i = shape_packed.h;
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    specializations[2 + 3].i = shape_packed.c;
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    specializations[2 + 4].i = shape_packed.cstep;
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    Mat local_size_xyz;
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    if (shape_packed.dims == 1)
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    {
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        local_size_xyz.w = std::min(64, shape_packed.w);
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        local_size_xyz.h = 1;
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        local_size_xyz.c = 1;
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    }
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    if (shape_packed.dims == 2)
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    {
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        local_size_xyz.w = std::min(8, shape_packed.w);
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        local_size_xyz.h = std::min(8, shape_packed.h);
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        local_size_xyz.c = 1;
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    }
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    if (shape_packed.dims == 3)
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    {
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        local_size_xyz.w = std::min(4, shape_packed.w);
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        local_size_xyz.h = std::min(4, shape_packed.h);
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        local_size_xyz.c = std::min(4, shape_packed.c);
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    }
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    // pack1
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    if (shape.dims == 0 || elempack == 1)
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    {
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        pipeline_hardswish = new Pipeline(vkdev);
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        pipeline_hardswish->set_optimal_local_size_xyz(local_size_xyz);
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        pipeline_hardswish->create(LayerShaderType::hardswish, opt, specializations);
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    }
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    // pack4
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    if (shape.dims == 0 || elempack == 4)
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    {
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        pipeline_hardswish_pack4 = new Pipeline(vkdev);
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        pipeline_hardswish_pack4->set_optimal_local_size_xyz(local_size_xyz);
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        pipeline_hardswish_pack4->create(LayerShaderType::hardswish_pack4, opt, specializations);
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    }
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    // pack8
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    if ((opt.use_shader_pack8 && shape.dims == 0) || elempack == 8)
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    {
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        pipeline_hardswish_pack8 = new Pipeline(vkdev);
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        pipeline_hardswish_pack8->set_optimal_local_size_xyz(local_size_xyz);
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        pipeline_hardswish_pack8->create(LayerShaderType::hardswish_pack8, opt, specializations);
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    }
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    return 0;
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}
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int HardSwish_vulkan::destroy_pipeline(const Option& /*opt*/)
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{
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    delete pipeline_hardswish;
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    pipeline_hardswish = 0;
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    delete pipeline_hardswish_pack4;
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    pipeline_hardswish_pack4 = 0;
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    delete pipeline_hardswish_pack8;
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    pipeline_hardswish_pack8 = 0;
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    return 0;
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}
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int HardSwish_vulkan::forward_inplace(VkMat& bottom_top_blob, VkCompute& cmd, const Option& /*opt*/) const
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{
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    int elempack = bottom_top_blob.elempack;
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    std::vector<VkMat> bindings(1);
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    bindings[0] = bottom_top_blob;
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    std::vector<vk_constant_type> constants(5);
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    constants[0].i = bottom_top_blob.dims;
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    constants[1].i = bottom_top_blob.w;
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    constants[2].i = bottom_top_blob.h;
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    constants[3].i = bottom_top_blob.c;
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    constants[4].i = bottom_top_blob.cstep;
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    const Pipeline* pipeline = elempack == 8 ? pipeline_hardswish_pack8
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                               : elempack == 4 ? pipeline_hardswish_pack4
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                               : pipeline_hardswish;
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    cmd.record_pipeline(pipeline, bindings, constants, bottom_top_blob);
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    return 0;
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}
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int HardSwish_vulkan::forward_inplace(VkImageMat& bottom_top_blob, VkCompute& cmd, const Option& /*opt*/) const
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{
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    int elempack = bottom_top_blob.elempack;
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    std::vector<VkImageMat> bindings(2);
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    bindings[0] = bottom_top_blob;
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    bindings[1] = bottom_top_blob;
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    std::vector<vk_constant_type> constants(5);
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    constants[0].i = bottom_top_blob.dims;
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    constants[1].i = bottom_top_blob.w;
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    constants[2].i = bottom_top_blob.h;
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    constants[3].i = bottom_top_blob.c;
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    constants[4].i = 0; //bottom_top_blob.cstep;
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    const Pipeline* pipeline = elempack == 8 ? pipeline_hardswish_pack8
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                               : elempack == 4 ? pipeline_hardswish_pack4
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                               : pipeline_hardswish;
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    cmd.record_pipeline(pipeline, bindings, constants, bottom_top_blob);
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    return 0;
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}
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} // namespace ncnn
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