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sna: Clip the tiled copy during framebuffer resize 

If we use the BLT for copies, then we need to supply correctly clipped
coordinates.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2013-08-15 00:28:25 +01:00
parent 6bd897157b
commit 445f205a18
1 changed files with 11 additions and 4 deletions
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15
src/sna/sna_display.c
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@ -2659,16 +2659,23 @@ static void copy_front(struct sna *sna, PixmapPtr old, PixmapPtr new)
if (new->drawable.width >= old->drawable.width &&
new->drawable.height >= old->drawable.height)
{
int nx = (new->drawable.width + old->drawable.width) / old->drawable.width;
int ny = (new->drawable.height + old->drawable.height) / old->drawable.height;
int nx = (new->drawable.width + old->drawable.width - 1) / old->drawable.width;
int ny = (new->drawable.height + old->drawable.height - 1) / old->drawable.height;
box.x1 = box.y1 = 0;
box.x2 = old->drawable.width;
box.y2 = old->drawable.height;
dy = 0;
for (sy = 0; sy < ny; sy++) {
box.y2 = old->drawable.height;
if (box.y2 + dy > new->drawable.height)
box.y2 = new->drawable.height - dy;
dx = 0;
for (sx = 0; sx < nx; sx++) {
box.x2 = old->drawable.width;
if (box.x2 + dx > new->drawable.width)
box.x2 = new->drawable.width - dx;
(void)sna->render.copy_boxes(sna, GXcopy,
old, old_priv->gpu_bo, 0, 0,
new, new_priv->gpu_bo, dx, dy,