Gerd Alber wrote:
> Denis Oliver Kropp write:
>
>
>>There's a 1 bit alpha format A1. You can try using that or implement a
>>new one with A1 or LUT4 as an example.
>
>
>>Monochrome would be a format with 1 bit luminance though :)
>
>
> Hi,
> thanks for the fast reply!
>
> Sure, I can handle with 1 bit alpha format A1. But the problem is to write
> 1 bit per pixel into RAM (every bit in RAM is equivalent to 1 pixel on my
> monochrome Display).
> Least operation in DirectFB is 1 Byte per pixel (u8), e.g.
> static void Cop_to_Aop_8( GenefxState *gfxs ).
> I'am right ?
DirectFB supports 8 pixels per byte, but in the A1 case some functions
are just not implemented, e.g.:
static GenefxFunc Cop_to_Aop_PFI[DFB_NUM_PIXELFORMATS] = {
Cop_to_Aop_16, /* DSPF_ARGB1555 */
Cop_to_Aop_16, /* DSPF_RGB16 */
Cop_to_Aop_24, /* DSPF_RGB24 */
Cop_to_Aop_32, /* DSPF_RGB32 */
Cop_to_Aop_32, /* DSPF_ARGB */
Cop_to_Aop_8, /* DSPF_A8 */
Cop_to_Aop_yuv422, /* DSPF_YUY2 */
Cop_to_Aop_8, /* DSPF_RGB332 */
Cop_to_Aop_yuv422, /* DSPF_UYVY */
Cop_to_Aop_i420, /* DSPF_I420 */
Cop_to_Aop_i420, /* DSPF_YV12 */
Cop_to_Aop_8, /* DSPF_LUT8 */
Cop_to_Aop_8, /* DSPF_ALUT44 */
Cop_to_Aop_32, /* DSPF_AiRGB */
NULL, /* DSPF_A1 */ <=================
Cop_to_Aop_nv12, /* DSPF_NV12 */
Cop_to_Aop_nv12, /* DSPF_NV16 */
Cop_to_Aop_16, /* DSPF_ARGB2554 */
Cop_to_Aop_16, /* DSPF_ARGB4444 */
Cop_to_Aop_nv21, /* DSPF_NV21 */
Cop_to_Aop_32, /* DSPF_AYUV */
NULL, /* DSPF_A4 */
Cop_to_Aop_18, /* DSPF_ARGB1666 */
Cop_to_Aop_18, /* DSPF_ARGB6666 */
Cop_to_Aop_18, /* DSPF_RGB18 */
};
--
Best regards,
Denis Oliver Kropp
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| http://www.directfb.org/ |
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