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