Hi all
On 08/24/2010 12:23 PM, Simon Chan wrote:
> Hi, all,
>
> I have encountered a format coversion issue when manage to add copybit
> module for some hw 2D core.
>
> There are a lot of blit operations from COPYBIT_FORMAT_RGBA_8888 to
> COPYBIT_FORMAT_RGB_565 when do menu rendering.
>
I have the exact same question. Is it sufficient to change here?
switch (format) { // TODO: take h/w into account
case PIXEL_FORMAT_TRANSPARENT:
case PIXEL_FORMAT_TRANSLUCENT:
- format = PIXEL_FORMAT_RGBA_8888;
+ format = PIXEL_FORMAT_BGRA_8888;
break;
case PIXEL_FORMAT_OPAQUE:
format = PIXEL_FORMAT_RGB_565;
Michael
> It looks the layout of android COPYBIT_FORMAT_RGBA_8888 format is as figure 1.
>
> 31 ... 0
> ---------------------
> | A | B | G | R | (1)
> ---------------------
>
> but unfortunately, for 8:8:8:8 image, the 2d hw in question only
> supports layout as figure 2.
>
> 31 ... 0
> ---------------------
> | A | R | G | B | (2)
> ---------------------
>
> So my question is there any thing I can do to work aound it, and will
> not hurt performance significantly?
> eg. by some way I can force ARGB src image data.
>
> Suggestion is welcome and much appreciated. Thanks a lot.
>
> BR.
> Simon Chan
>
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