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glamor: Fill out glamor_get_color_4f_from_pixel() a bit.

This commit is contained in:
Eric Anholt 2009-08-20 15:37:22 -07:00 committed by Zhigang Gong
parent 519103565c
commit 8016135ec7
1 changed files with 22 additions and 6 deletions
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28
glamor/glamor_core.c
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@ -158,17 +158,33 @@ void
glamor_get_color_4f_from_pixel(PixmapPtr pixmap, unsigned long fg_pixel,
GLfloat *color)
{
if (pixmap->drawable.depth < 24) {
ErrorF("pixmap with bad depth\n");
color[0] = 1.0;
switch (pixmap->drawable.depth) {
case 1:
color[0] = 0.0;
color[1] = 0.0;
color[2] = 1.0;
color[3] = 1.0;
} else {
color[2] = 0.0;
color[3] = fg_pixel & 0x01;
break;
case 8:
color[0] = 0.0;
color[1] = 0.0;
color[2] = 0.0;
color[3] = (fg_pixel & 0xff) / 255.0;
break;
case 24:
case 32:
color[0] = ubyte_to_float(fg_pixel >> 16);
color[1] = ubyte_to_float(fg_pixel >> 8);
color[2] = ubyte_to_float(fg_pixel >> 0);
color[3] = ubyte_to_float(fg_pixel >> 24);
break;
default:
ErrorF("pixmap with bad depth: %d\n", pixmap->drawable.depth);
color[0] = 1.0;
color[1] = 0.0;
color[2] = 1.0;
color[3] = 1.0;
break;
}
}