Hi On Wednesday 20 February 2002 20:24, Nick Kurshev wrote: [...]
// Bits 16-19 seem to select the format -// Bit 28 seems to toggle something affects luma & chroma +// 0x0 dunno behaves strange +// 0x1 dunno behaves strange +// 0x2 dunno behaves strange +// 0x3 BGR15 +// 0x4 BGR16 +// 0x5 BGR16 (hmm, that need investigation, 2 BGR16 formats, i guess 1 will have only 5bits for green) +// 0x6 BGR32 +// 0x7 BGR32 with somehow mixed even / odd pixels ? +// 0x8 YYYYUVUV
mga g200 compatibility? ;) dunno
+// 0x9 YVU9
I've amazed !!!
+// 0xA YV12 +// 0xB YUY2 +// 0xC UYVY +// 0xD UYVY (not again ... dont ask me, i dunno the difference)
Maybe radeon.h can help you? There is still unsupported (untested by me) YVYU!
not really :( 0xC==0xD appearently there is no visible difference and the remaining modes are not BGR or YUV like (setting a single bit affects several pixels ... and such weird things) so it seems that 0x0-0x2 & 0xE-0xF are not legal values at all, at least not on my card
+// 0xE dunno behaves strange +// 0xF dunno behaves strange +// Bit 28 all values are assumed to be 7 bit with chroma=64 for black (tested with YV12 & YUY2) // the remaining bits seem to have no effect
[...] Michael