#include "Mesh.h"
#include "Utilities.h"
#include "Vertex.h"

UINT Mesh::init(IDirect3DDevice9* pD3DDevice)
{
    UINT error = 0;

    error = createVertexBuffer(pD3DDevice);
    CheckError(error);

    error = createIndexBuffer(pD3DDevice);
    CheckError(error);

    return 0;
}

void Mesh::update(FLOAT dt)
{
}

void Mesh::render(IDirect3DDevice9* pD3DDevice)
{
}

void Mesh::deInit()
{
    safeRelease(_pIndexBuffer);
    safeRelease(_pVertexBuffer);
}

UINT Mesh::createVertexBuffer(IDirect3DDevice9* pD3DDevice)
{
    // 1. define mesh structure
    _vertexCount = 3;
    _vertexStride = sizeof(Vertex);

    // 2. create vertex buffer WITHOUT data
    HRESULT hr = pD3DDevice->CreateVertexBuffer(
        _vertexCount * _vertexStride, // vertex buffer byte length
        D3DUSAGE_WRITEONLY, // vertex buffer access mode
        FVF, // FVF - Flexible Vertex Format
        D3DPOOL_MANAGED, // video memory management
        &_pVertexBuffer,
        nullptr // not used anymore
    );

    // 3. fill vertex buffer with data
    return 0;
}

UINT Mesh::createIndexBuffer(IDirect3DDevice9* pD3DDevice)
{
    return 0;
}