PocketMatrix

I'm writing a game for ppc, for now I'm using my own graph lib that was a derived version of my own lib for series60 (nokia 7650, 3650 etc). However I want to use GD for ppc mainly for his high ppc compatibility and probably better performance (with 2.01 release that support multiple pixel write ). I use my own image loader and I make some conversion on the loading process. How can I get the bit depth currently used by GD? On my lib I convert on my loader the depth image (always 16 bit) on 16 (no conversion), 15 or 12 bit to support current depth screen.

Thanks.

Hi Thomas,

The easiest way is to:

(1) Load the header of your image go get the width and height
(2) Create a new CGapiSurface of that width and height
(3) Lock the surface to get exclusive access (CGapiSurface::GetBuffer)
(3) CGapiSurface::GetBuffer returns a STRUCT with surface information. Check the pixel format as buffer.dwPixelFormat:
case GDPIXELFORMAT_555: Surface is 15-bit x555
case GDPIXELFORMAT_565: Surface is 16-bit 565
(4) Copy your image to the surface
(5) Release the buffer with CGapiSurface::ReleaseBuffer

Thanks for your quick answer Johan!