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sna: Cursors only need to be cleared when they are shrunk 

If we completely overwrite the old contents, we do not need to clear it
first.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2014-03-27 21:57:39 +00:00
parent 5c4d6d1ad7
commit e501aa6676
1 changed files with 7 additions and 1 deletions
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8
src/sna/sna_display.c
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@ -2984,6 +2984,8 @@ struct sna_cursor {
uint32_t *image;
Rotation rotation;
int size;
int last_width;
int last_height;
unsigned handle;
unsigned serial;
unsigned alloc;
@ -3086,6 +3088,8 @@ static struct sna_cursor *__sna_create_cursor(struct sna *sna, unsigned size)
__DBG(("%s: handle=%d, allocated %d\n", __FUNCTION__, c->handle, size));
c->serial = 0;
c->last_width = c->last_height = 0; /* all clear */
c->next = sna->cursor.cursors;
sna->cursor.cursors = c;
@ -3170,7 +3174,7 @@ static struct sna_cursor *__sna_get_cursor(struct sna *sna, xf86CrtcPtr crtc)
}
}
if (width != size || height != size)
if (width < cursor->last_width || height < cursor->last_height)
memset(cursor->image, 0, 4*size*size);
if (rotation == RR_Rotate_0) {
memcpy_blt(src, cursor->image, 32,
@ -3199,6 +3203,8 @@ static struct sna_cursor *__sna_get_cursor(struct sna *sna, xf86CrtcPtr crtc)
cursor->size = size;
cursor->rotation = rotation;
cursor->serial = sna->cursor.serial;
cursor->last_width = width;
cursor->last_height = height;
return cursor;
}