The patch titled
fbcon: Saner 16-color to 4-color conversion
has been added to the -mm tree. Its filename is
fbcon-saner-16-color-to-4-color-conversion.patch
Patches currently in -mm which might be from [EMAIL PROTECTED] are
fbdev-add-fbset-a-support.patch
vesafb-add-blanking-support.patch
fbdev-resurrect-hooks-to-get-edid-from-firmware.patch
savagefb-driver-updates.patch
nvidiafb-fallback-to-firmware-edid.patch
fbdev-fix-greater-than-1-bit-monochrome-color-handling.patch
fbcon-saner-16-color-to-4-color-conversion.patch
console-fix-buffer-copy-on-vc-resize.patch
radeonfb_old-fix-broken-link.patch
fbdev-update-framebuffer-feature-list.patch
From: "Antonino A. Daplas" <[EMAIL PROTECTED]>
Currently, the default linux 16-colors are converted to 4-colors by simply
dividing the values by 4. However, this is not necessarily correct since the
first 4 colors are converted to black, rendering them invisible.
So, for black, no conversion; for light colors, convert to gray, for normal
text color, no conversion, and for bright colors, convert to intense white.
Signed-off-by: Antonino Daplas <[EMAIL PROTECTED]>
Signed-off-by: Andrew Morton <[EMAIL PROTECTED]>
---
drivers/video/console/fbcon.c | 21 +++++++++++++++++++--
1 files changed, 19 insertions(+), 2 deletions(-)
diff -puN
drivers/video/console/fbcon.c~fbcon-saner-16-color-to-4-color-conversion
drivers/video/console/fbcon.c
---
devel/drivers/video/console/fbcon.c~fbcon-saner-16-color-to-4-color-conversion
2005-08-21 21:53:59.000000000 -0700
+++ devel-akpm/drivers/video/console/fbcon.c 2005-08-21 21:53:59.000000000
-0700
@@ -247,9 +247,26 @@ static inline int get_color(struct vc_da
case 2:
/*
* Scale down 16-colors to 4 colors. Default 4-color palette
- * is grayscale.
+ * is grayscale. However, simply dividing the values by 4
+ * will not work, as colors 1, 2 and 3 will be scaled-down
+ * to zero rendering them invisible. So empirically convert
+ * colors to a sane 4-level grayscale.
*/
- color /= 4;
+ switch (color) {
+ case 0:
+ color = 0; /* black */
+ break;
+ case 1 ... 6:
+ color = 2; /* white */
+ break;
+ case 7 ... 8:
+ color = 1; /* gray */
+ break;
+ default:
+ color = 3; /* intense white */
+ break;
+ }
+ break;
case 3:
/*
* Last 8 entries of default 16-color palette is a more intense
_
-
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