Function gl::BlitFramebuffer

pub unsafe fn BlitFramebuffer(
    srcX0: GLint, 
    srcY0: GLint, 
    srcX1: GLint, 
    srcY1: GLint, 
    dstX0: GLint, 
    dstY0: GLint, 
    dstX1: GLint, 
    dstY1: GLint, 
    mask: GLbitfield, 
    filter: GLenum
)

Fallbacks: BlitFramebufferEXT, BlitFramebufferNV