本文整理汇总了Golang中C.SDL_GetRGBA函数的典型用法代码示例。如果您正苦于以下问题:Golang SDL_GetRGBA函数的具体用法?Golang SDL_GetRGBA怎么用?Golang SDL_GetRGBA使用的例子?那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。
在下文中一共展示了SDL_GetRGBA函数的5个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: getRGBA
// Maps a pixel value into the RGBA components for a given pixel format
func getRGBA(format *C.SDL_PixelFormat, pixel uint32) (byte, byte, byte, byte) {
var r, b, g, a uint8
pr := cbyteptr(&r)
pb := cbyteptr(&b)
pg := cbyteptr(&g)
pa := cbyteptr(&a)
C.SDL_GetRGBA(C.Uint32(pixel), format, pr, pg, pb, pa)
return r, g, b, a
}
示例2: GetRGBA
// Gets RGBA values from a pixel in the specified pixel format.
func GetRGBA(color uint32, format *PixelFormat, r, g, b, a *uint8) {
C.SDL_GetRGBA(C.Uint32(color), (*C.SDL_PixelFormat)(cast(format)), (*C.Uint8)(r), (*C.Uint8)(g), (*C.Uint8)(b), (*C.Uint8)(a))
}
示例3: GetRGBA
// GetRGBA gets the RGBA components from a pixel of the specified format.
// GetRGBA (https://wiki.libsdl.org/SDL_GetRGBA)
func GetRGBA(pixel uint32, format *PixelFormat) (r, g, b, a uint8) {
C.SDL_GetRGBA(C.Uint32(pixel), (*C.SDL_PixelFormat)(unsafe.Pointer(format)),
(*C.Uint8)(&r), (*C.Uint8)(&g), (*C.Uint8)(&b), (*C.Uint8)(&a))
return
}
示例4: GetRGBA
func (p *PixelFormat) GetRGBA(pix uint32) (r, g, b, a uint8) {
var cr, cg, cb, ca C.Uint8
C.SDL_GetRGBA(C.Uint32(pix), p.c(), &cr, &cg, &cb, &ca)
return uint8(cr), uint8(cg), uint8(cb), uint8(ca)
}
示例5: GetColor
func (s *Surface) GetColor(c32 uint32) color.Color {
var r8, g8, b8, a8 C.Uint8
C.SDL_GetRGBA(C.Uint32(c32), s.ptr.format, &r8, &g8, &b8, &a8)
return color.RGBA{uint8(r8), uint8(g8), uint8(b8), uint8(a8)}
}