public static unsafe ReadOnlySpan <byte> GetData(OpenGLRenderer renderer, BufferHandle buffer, int offset, int size)
{
if (HwCapabilities.UsePersistentBufferForFlush)
{
return(renderer.PersistentBuffers.Default.GetBufferData(buffer, offset, size));
}
else
{
IntPtr target = renderer.PersistentBuffers.Default.GetHostArray(size);
GL.BindBuffer(BufferTarget.CopyReadBuffer, buffer.ToInt32());
GL.GetBufferSubData(BufferTarget.CopyReadBuffer, (IntPtr)offset, size, target);
return(new ReadOnlySpan <byte>(target.ToPointer(), size));
}
}
public Window(OpenGLRenderer renderer)
{
_renderer = renderer;
_stagingTextures = new int[TextureCount];
}