code: func BlitFramebuffer(srcX0 int32, srcY0 int32, srcX1 int32, srcY1 int32, dstX0 int32, dstY0 int32, dstX1 int32, dstY1 int32, mask uint32, filter uint32) {
  	C.glowBlitFramebuffer(gpBlitFramebuffer, (C.GLint)(srcX0), (C.GLint)(srcY0), (C.GLint)(srcX1), (C.GLint)(srcY1), (C.GLint)(dstX0), (C.GLint)(dstY0), (C.GLint)(dstX1), (C.GLint)(dstY1), (C.GLbitfield)(mask), (C.GLenum)(filter))
  }
docs: // copy a block of pixels from one framebuffer object to another