public override Axiom.Media.PixelFormat GetNativeFormat( TextureType ttype, PixelFormat format, TextureUsage usage )
{
// Basic filtering
D3D.Format d3dPF = D3DHelper.ConvertEnum( D3DHelper.GetClosestSupported( format ) );
// Calculate usage
D3D.Usage d3dusage = 0;
D3D.Pool pool = D3D.Pool.Managed;
if ( ( usage & TextureUsage.RenderTarget ) != 0 )
{
d3dusage |= D3D.Usage.RenderTarget;
pool = D3D.Pool.Default;
}
if ( ( usage & TextureUsage.Dynamic ) != 0 )
{
d3dusage |= D3D.Usage.Dynamic;
pool = D3D.Pool.Default;
}
// Use D3DX to adjust pixel format
switch ( ttype )
{
case TextureType.OneD:
case TextureType.TwoD:
D3D.TextureRequirements tReqs = D3D.Texture.CheckRequirements( device, 0, 0, 0, d3dusage, D3DHelper.ConvertEnum( format ), pool );
d3dPF = tReqs.Format;
break;
case TextureType.ThreeD:
D3D.VolumeTextureRequirements volReqs = D3D.VolumeTexture.CheckRequirements( device, 0, 0, 0, 0, d3dusage, D3DHelper.ConvertEnum( format ), pool );
d3dPF = volReqs.Format;
break;
case TextureType.CubeMap:
D3D.CubeTextureRequirements cubeReqs = D3D.CubeTexture.CheckRequirements( device, 0, 0, d3dusage, D3DHelper.ConvertEnum( format ), pool );
d3dPF = cubeReqs.Format;
break;
}
return D3DHelper.ConvertEnum( d3dPF );
}
