GlCopyTextureSubImage2D typedef
GlCopyTextureSubImage2D =
void Function(int texunit, int target, int level, int internalformat, int x, int y, int width, int border)
Implementation
typedef GlCopyTextureSubImage2D = void Function(int texture, int level,
int xoffset, int yoffset, int x, int y, int width, int height);