Function ugli_gl::BlendFuncSeparate

pub unsafe fn BlendFuncSeparate(
    sfactorRGB: GLenum, 
    dfactorRGB: GLenum, 
    sfactorAlpha: GLenum, 
    dfactorAlpha: GLenum
)

Fallbacks: BlendFuncSeparateEXT, BlendFuncSeparateINGR