protected void DestroyRenderTextures()
{
if ( sliceTRT.Count == 0 )
return;
for ( int i = 0; i < sliceTRT.Count; ++i )
{
RenderTexture trt = sliceTRT[ i ];
if ( trt != null )
Root.Instance.RenderSystem.DestroyRenderTarget( trt.Name );
}
}