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Add support for 24bit

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This commit is contained in:
Mikael Magnusson 2009-06-06 11:12:06 +02:00
parent d69530a45a
commit 263833450d
1 changed files with 23 additions and 1 deletions
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24
render/color.c
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@ -143,6 +143,28 @@ void RrReduceDepth(const RrInstance *inst, RrPixel32 *data, XImage *im)
} }
} else im->data = (gchar*) data; } else im->data = (gchar*) data;
break; break;
case 24:
{
/* reverse the ordering, shifting left 16bit should be the first byte
out of three, etc */
const guint roff = (16 - RrRedOffset(inst)) / 8;
const guint goff = (16 - RrGreenOffset(inst)) / 8;
const guint boff = (16 - RrBlueOffset(inst)) / 8;
gint outx;
for (y = 0; y < im->height; y++) {
for (x = 0, outx = 0; x < im->width; x++, outx += 3) {
r = (data[x] >> RrDefaultRedOffset) & 0xFF;
g = (data[x] >> RrDefaultGreenOffset) & 0xFF;
b = (data[x] >> RrDefaultBlueOffset) & 0xFF;
p8[outx+roff] = r;
p8[outx+goff] = g;
p8[outx+boff] = b;
}
data += im->width;
p8 += im->bytes_per_line;
}
break;
}
case 16: case 16:
for (y = 0; y < im->height; y++) { for (y = 0; y < im->height; y++) {
for (x = 0; x < im->width; x++) { for (x = 0; x < im->width; x++) {
@ -191,7 +213,7 @@ void RrReduceDepth(const RrInstance *inst, RrPixel32 *data, XImage *im)
} }
break; break;
default: default:
g_error("Your bit depth is currently unhandled\n"); g_error("This image bit depth (%i) is currently unhandled", im->bits_per_pixel);
} }
} }