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Fixed framebuffer reading for the Atomiswave bios logo in rgb565 mode (still disabled by default)

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If you wonder how it looks:
http://mamedev.emulab.it/kale/fast/files/0001_683668660.png
http://mamedev.emulab.it/kale/fast/files/0002_69985910.png
This commit is contained in:
Angelo Salese 2009-04-06 20:04:05 +00:00
parent 04482f29f1
commit d95e8a62d6
1 changed files with 7 additions and 3 deletions
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10
src/mame/video/dc.c
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@ -1213,8 +1213,9 @@ static void testdrawscreenframebuffer(bitmap_t *bitmap,const rectangle *cliprect
{
int x,y,dy,xi;
UINT32 addrp;
UINT16 *fbaddr;
UINT32 *fbaddr;
UINT32 c;
UINT32 r,g,b;
// only for rgb565 framebuffer
xi=((pvrta_regs[FB_R_SIZE] & 0x3ff)+1) << 1;
@ -1224,9 +1225,12 @@ static void testdrawscreenframebuffer(bitmap_t *bitmap,const rectangle *cliprect
addrp=pvrta_regs[FB_R_SOF1]+y*xi*2;
for (x=0;x < xi;x++)
{
fbaddr=BITMAP_ADDR16(bitmap,y,x);
fbaddr=BITMAP_ADDR32(bitmap,y,x);
c=*(((UINT16 *)dc_texture_ram) + (WORD2_XOR_LE(addrp) >> 1));
*fbaddr = (UINT16)c;
b = (c & 0x001f) << 3;
g = (c & 0x07e0) >> 3;
r = (c & 0xf800) >> 8;
*fbaddr = b | (g<<8) | (r<<16);;
addrp+=2;
}
}