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glamor: Fill in 1 and 24-bit getspans.

This commit is contained in:
Eric Anholt 2009-08-20 17:05:00 -07:00 committed by Zhigang Gong
parent f6cffbb2ba
commit 7500ee2b02
1 changed files with 32 additions and 3 deletions
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33
glamor/glamor_getspans.c
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@ -31,6 +31,18 @@
#include "glamor_priv.h"
static void
set_bit(uint8_t *bitfield, unsigned int index, unsigned int val)
{
int i = index / 8;
int mask = 1 << (index % 8);
if (val)
bitfield[i] |= mask;
else
bitfield[i] &= ~mask;
}
void
glamor_get_spans(DrawablePtr drawable,
int wmax,
@ -41,10 +53,20 @@ glamor_get_spans(DrawablePtr drawable,
{
PixmapPtr pixmap = glamor_get_drawable_pixmap(drawable);
GLenum format, type;
int i;
int i, j;
uint8_t *temp_dst = NULL, *readpixels_dst = (uint8_t *)dst;
switch (drawable->depth) {
case 1:
temp_dst = xalloc(4 * wmax);
format = GL_ALPHA;
type = GL_UNSIGNED_BYTE;
readpixels_dst = temp_dst;
break;
case 24:
format = GL_RGB;
type = GL_UNSIGNED_BYTE;
break;
case 32:
format = GL_BGRA;
type = GL_UNSIGNED_INT_8_8_8_8_REV;
@ -65,7 +87,14 @@ glamor_get_spans(DrawablePtr drawable,
widths[i],
1,
format, type,
dst);
readpixels_dst);
if (temp_dst) {
for (j = 0; j < widths[i]; j++) {
set_bit((uint8_t *)dst, j, temp_dst[j] & 0x1);
}
dst += PixmapBytePad(widths[i], drawable->depth);
} else {
readpixels_dst += PixmapBytePad(widths[i], drawable->depth);
}
}
}