// Copyright Amazon.com, Inc. or its affiliates. All Rights Reserved.
// SPDX-License-Identifier: Apache-2.0
#include "stdafx.h"

#include <krakatoa/shader_render_element.hpp>

#include <krakatoa/render_element_impl.hpp>

#include <memory>

namespace krakatoa {

shader_render_element::shader_render_element( const frantic::tstring& elementName )
    : m_elementName( elementName ) {}

shader_render_element::~shader_render_element() {}

render_element_interface* shader_render_element::clone() {
    std::unique_ptr<shader_render_element> pResult( new shader_render_element( m_elementName ) );
    pResult->get_framebuffer().set_size( get_framebuffer().size() );
    pResult->m_accessor = m_accessor;

    return pResult.release();
}

// From particle_render_element_interface

shader_render_element::draw_type shader_render_element::get_drawing_type() const { return draw_type_shader; }

void shader_render_element::set_channel_map( const frantic::channels::channel_map& pcm ) {
    m_accessor = pcm.get_const_cvt_accessor<frantic::graphics::color3f>( _T("__Element_") + m_elementName );
}

void shader_render_element::add_required_channels( frantic::channels::channel_map& pcm ) {
    if( !pcm.has_channel( _T("__Element_") + m_elementName ) )
        pcm.define_channel<frantic::graphics::color3f>( _T("__Element_") + m_elementName );
}

frantic::graphics::color3f shader_render_element::evaluate( const char* particle ) {
    return m_accessor.get( particle );
}

} // namespace krakatoa