#include "VertexBuffer.h"
#include "GraphicsEngine.h"


VertexBuffer::VertexBuffer():m_layout(0),m_buffer(0)
{
}

bool VertexBuffer::load(void* list_vertices,UINT size_vertex,UINT size_list,void*shader_byte_code,UINT size_byte_shader)
{
    if (m_buffer)m_buffer->Release();
    if (m_layout)m_layout->Release();

    D3D11_BUFFER_DESC buff_desc = {};
    buff_desc.Usage = D3D11_USAGE_DEFAULT;
    buff_desc.ByteWidth = size_vertex * size_list;
    buff_desc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
    buff_desc.CPUAccessFlags = 0;
    buff_desc.MiscFlags = 0;

    D3D11_SUBRESOURCE_DATA init_data = {};
    init_data.pSysMem = list_vertices;

    m_size_vertex = size_vertex;
    m_size_list = size_list;

    if (FAILED(GraphicsEngine::get()->m_d3d_device->CreateBuffer(&buff_desc, &init_data, &m_buffer)))
    {
        return false;
    }

    D3D11_INPUT_ELEMENT_DESC layout[]=
    {
        //SEMANTIC NAME - SEMANTIC INDEX - FORMAT - INPUT SLOT - ALIGNED BYTE OFFSET - INPUT SLOT CLASS - INSTANCE DATA STEP RATE
        {"POSITION", 0,  DXGI_FORMAT_R32G32B32_FLOAT, 0, 0,D3D11_INPUT_PER_VERTEX_DATA ,0},
        { "COLOR", 0,  DXGI_FORMAT_R32G32B32_FLOAT, 0, 12,D3D11_INPUT_PER_VERTEX_DATA ,0 },
        { "COLOR", 1,  DXGI_FORMAT_R32G32B32_FLOAT, 0, 24,D3D11_INPUT_PER_VERTEX_DATA ,0 }
    };

    UINT size_layout = ARRAYSIZE(layout);

    if (FAILED(GraphicsEngine::get()->m_d3d_device->CreateInputLayout(layout, size_layout, shader_byte_code, size_byte_shader, &m_layout)))
    {
        return false;
    }

    return true;
}

UINT VertexBuffer::getSizeVertexList()
{
    return this->m_size_list;
}

bool VertexBuffer::release()
{
    m_layout->Release();
    m_buffer->Release();
    delete this;
    return true;
}

VertexBuffer::~VertexBuffer()
{
}