private void CreateNormalTexture()
{
Debug.Assert( SrcWidth > 0 && SrcHeight > 0 );
// use current back buffer format for render textures, else use the one
// defined by this texture format
XFG.SurfaceFormat xnaPixelFormat =
( Usage == TextureUsage.RenderTarget ) ? _bbPixelFormat : ChooseXnaFormat();
// how many mips to use? make sure its at least one
int numMips = ( MipmapCount > 0 ) ? MipmapCount : 1;
//bloody 'ell, it's great that Xa 4.0 checks capabilities for the programmer, but it's incredibly annoying
//that it doesn't tell the programer anything about them. Anyway, there's no way for us to know if MipMaps are supported,
//but in the c'tor of the Texture is a paramater bool mipMap, which, if set to true and mipMaps aren't supported, Xna will take care of it
//-DoubleA
//MipmapsHardwareGenerated = false;
//if ( _devCaps.TextureCapabilities.SupportsMipMap )
//{
// MipmapsHardwareGenerated = CanAutoGenMipMaps( xnaUsage, XFG.ResourceType.Texture2D, xnaPixelFormat );
// if ( MipmapsHardwareGenerated )
// {
// numMips = 0;
// }
//}
//else
//{
// // no mip map support for this kind of texture
// this.MipmapCount = 0;
// numMips = 1;
//}
if ( Usage == TextureUsage.RenderTarget )
{
renderTarget = new XFG.RenderTarget2D(_device, SrcWidth, SrcHeight, MipmapCount > 0 ? true : false, xnaPixelFormat, XFG.DepthFormat.Depth24Stencil8 );
_normTexture = renderTarget;
CreateDepthStencil();
}
else
{
_normTexture = new XFG.Texture2D(_device, SrcWidth, SrcHeight, MipmapCount > 0 ? true : false,xnaPixelFormat);
}
_texture = _normTexture;
SetFinalAttributes( SrcWidth, SrcHeight, 1, XnaHelper.Convert( xnaPixelFormat ) );
if ( MipmapsHardwareGenerated )
{
//Generating mip maps API is no longer exposed. RenderTargets will auto-generate their mipmaps
//but for other textures you're S.O.L. -DoubleA. See Shawn Hargreaves response to this thread: http://forums.create.msdn.com/forums/p/71559/436835.aspx
//_texture.GenerateMipMaps( GetBestFilterMethod() );
}
}
