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completed crtc colordepth setup guess for 24bit mode.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@13812 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Rudolf Cornelissen
2005-07-24 11:51:36 +00:00
parent 32661d2e83
commit 8a6f27ebd8
1 changed files with 6 additions and 4 deletions
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src/add-ons/accelerants/via/engine/crtc.c
+6 -4
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@@ -424,9 +424,11 @@ status_t eng_crtc_depth(int mode)
/* set VCLK scaling */ /* set VCLK scaling */
/* genctrl bit use: /* genctrl bit use:
b7: ? b7: PAL assignment stuff (color-lookup (0) versus gamma (1))?
%1 = very dark image (tested 8-bit mode)
b6: ? b6: ?
b5: ? b5: %0 = distortions (stripes) only (tested 8-bit mode)
%1 = OK
b4: %0 = 15-bit color in 2 bytes/pixel mode; b4: %0 = 15-bit color in 2 bytes/pixel mode;
%1 = 16-bit color in 2 bytes/pixel mode. %1 = 16-bit color in 2 bytes/pixel mode.
b3-2:%00 = 1 byte /pixel; b3-2:%00 = 1 byte /pixel;
@@ -453,8 +455,8 @@ status_t eng_crtc_depth(int mode)
break; break;
case BPP24: case BPP24:
/* direct mode */ /* direct mode */
//fixme: complete guess.. //fixme? this is a guess..
genctrl = 0x0a; //%0000 1010 genctrl = 0xaa; //%1010 1010
break; break;
case BPP32: case BPP32:
/* direct mode */ /* direct mode */