//-----------------------------------------------------------------------------
// Name: XBResource_SizeOf()
// Desc: Determines the byte size of a D3DResource
//-----------------------------------------------------------------------------
DWORD XBResource_SizeOf( LPDIRECT3DRESOURCE8 pResource )
{
switch( pResource->GetType() )
{
case D3DRTYPE_TEXTURE: return sizeof(D3DTexture);
case D3DRTYPE_VOLUMETEXTURE: return sizeof(D3DVolumeTexture);
case D3DRTYPE_CUBETEXTURE: return sizeof(D3DCubeTexture);
case D3DRTYPE_VERTEXBUFFER: return sizeof(D3DVertexBuffer);
case D3DRTYPE_INDEXBUFFER: return sizeof(D3DIndexBuffer);
case D3DRTYPE_PALETTE: return sizeof(D3DPalette);
}
return 0;
}
//-----------------------------------------------------------------------------
// Name: LoadPackedResource()
// Desc: Loads all the texture resources from the given XPR.
//-----------------------------------------------------------------------------
HRESULT RenderingManagerC::LoadPackedResource()
{
// Open the file to read the XPR headers
FILE* file = fopen( "D:\\Media\\Resource.xpr", "rb" );
if( NULL == file )
return E_FAIL;
// Read in and verify the XPR magic header
XPR_HEADER xprh;
if( fread( &xprh, sizeof(XPR_HEADER), 1, file ) != 1 )
{
fclose(file);
return E_FAIL;
}
if( xprh.dwMagic != XPR_MAGIC_VALUE )
{
OutputDebugStringA( "ERROR: Invalid Xbox Packed Resource (.xpr) file" );
fclose( file );
return E_INVALIDARG;
}
// Compute memory requirements
DWORD dwSysMemDataSize = xprh.dwHeaderSize - sizeof(XPR_HEADER);
DWORD dwVidMemDataSize = xprh.dwTotalSize - xprh.dwHeaderSize;
// Allocate memory
g_pResourceSysMemData = new BYTE[dwSysMemDataSize];
g_pResourceVidMemData = (BYTE*)D3D_AllocContiguousMemory( dwVidMemDataSize, D3DTEXTURE_ALIGNMENT );
// Read in the data from the file
if( fread( g_pResourceSysMemData, dwSysMemDataSize, 1, file ) != 1 ||
fread( g_pResourceVidMemData, dwVidMemDataSize, 1, file ) != 1 )
{
delete[] g_pResourceSysMemData;
D3D_FreeContiguousMemory( g_pResourceVidMemData );
fclose( file );
return E_FAIL;
}
// Done with the file
fclose( file );
// Loop over resources, calling Register()
BYTE* pData = g_pResourceSysMemData;
for( DWORD i = 0; i < resource_NUM_RESOURCES; i++ )
{
// Get the resource
LPDIRECT3DRESOURCE8 pResource = (LPDIRECT3DRESOURCE8)pData;
// Register the resource
pResource->Register( g_pResourceVidMemData );
// Advance the pointer
switch( pResource->GetType() )
{
case D3DRTYPE_TEXTURE: pData += sizeof(D3DTexture); break;
case D3DRTYPE_VOLUMETEXTURE: pData += sizeof(D3DVolumeTexture); break;
case D3DRTYPE_CUBETEXTURE: pData += sizeof(D3DCubeTexture); break;
case D3DRTYPE_VERTEXBUFFER: pData += sizeof(D3DVertexBuffer); break;
case D3DRTYPE_INDEXBUFFER: pData += sizeof(D3DIndexBuffer); break;
case D3DRTYPE_PALETTE: pData += sizeof(D3DPalette); break;
default: return E_FAIL;
}
}
return S_OK;
}
