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Fix reduce color depth to not use original data

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(and break parentrel)
This commit is contained in:
Derek Foreman 2003-04-06 18:03:59 +00:00
parent 70e4138169
commit 8ebf2b6a3f
2 changed files with 16 additions and 9 deletions
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15
render/color.c
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@ -65,12 +65,11 @@ void color_free(color_rgb *c)
void reduce_depth(pixel32 *data, XImage *im)
{
/* since pixel32 is the largest possible pixel size, we can share the
array*/
int r, g, b;
int x,y;
pixel16 *p16 = (pixel16*) data;
unsigned char *p8 = (unsigned char *)data;
pixel32 *p32 = (pixel32 *) im->data;
pixel16 *p16 = (pixel16 *) im->data;
unsigned char *p8 = (unsigned char *)im->data;
switch (im->bits_per_pixel) {
case 32:
if ((render_red_offset != default_red_shift) ||
@ -81,12 +80,14 @@ void reduce_depth(pixel32 *data, XImage *im)
r = (data[x] >> default_red_shift) & 0xFF;
g = (data[x] >> default_green_shift) & 0xFF;
b = (data[x] >> default_blue_shift) & 0xFF;
data[x] = (r << render_red_offset) + (g << render_green_offset) +
(b << render_blue_offset);
p32[x] = (r << render_red_offset)
+ (g << render_green_offset)
+ (b << render_blue_offset);
}
data += im->width;
p32 += im->width;
}
}
} else im->data = data;
break;
case 16:
for (y = 0; y < im->height; y++) {

10
render/render.c
View file

@ -377,17 +377,23 @@ void appearance_free(Appearance *a)
void pixel32_to_pixmap(pixel32 *in, Pixmap out, int x, int y, int w, int h)
{
unsigned char *scratch;
XImage *im = NULL;
im = XCreateImage(ob_display, render_visual, render_depth,
ZPixmap, 0, NULL, w, h, 32, 0);
g_assert(im != NULL);
im->byte_order = endian;
im->data = (char *)in;
reduce_depth((pixel32*)im->data, im);
/* this malloc is a complete waste of time on normal 32bpp
as reduce_depth just sets im->data = data and returns
*/
scratch = malloc(im->width * im->height * sizeof(pixel32));
im->data = scratch;
reduce_depth(in, im);
XPutImage(ob_display, out, DefaultGC(ob_display, ob_screen),
im, 0, 0, x, y, w, h);
im->data = NULL;
XDestroyImage(im);
free(scratch);
}
void appearance_minsize(Appearance *l, Size *s)