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glamor_copyarea: Return earlier if have zero nbox. 

Almost all callers will check whether the regions is empty
before call to this internal API, but it seems the
glamor_composite_with_copy may call into here with a zero
nbox. A little weird, as the miComputeCompositeRegion return
a Non-NULL, but the region is empty.

Also remove a unecessary glflush.

So let's check it here.

Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
This commit is contained in:
Zhigang Gong 2012-04-26 19:59:58 +08:00 committed by Eric Anholt
parent 20cbaa61cd
commit 1f83411c9a
1 changed files with 3 additions and 6 deletions
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9
glamor/glamor_copyarea.c
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@ -150,7 +150,6 @@ glamor_copy_n_to_n_textured(DrawablePtr src,
int src_x_off, src_y_off, dst_x_off, dst_y_off;
enum glamor_pixmap_status src_status = GLAMOR_NONE;
GLfloat dst_xscale, dst_yscale, src_xscale, src_yscale;
int flush_needed = 0;
int alu = GXcopy;
src_pixmap_priv = glamor_get_pixmap_private(src_pixmap);
@ -172,8 +171,7 @@ glamor_copy_n_to_n_textured(DrawablePtr src,
src_pixmap_priv = glamor_get_pixmap_private(src_pixmap);
#endif
} else
flush_needed = 1;
}
if (gc) {
if (!glamor_set_planemask(dst_pixmap, gc->planemask))
@ -265,8 +263,6 @@ glamor_copy_n_to_n_textured(DrawablePtr src,
#endif
dispatch->glUseProgram(0);
/* The source texture is bound to a fbo, we have to flush it here. */
if (flush_needed)
dispatch->glFlush();
glamor_put_dispatch(glamor_priv);
return TRUE;
}
@ -297,12 +293,13 @@ _glamor_copy_n_to_n(DrawablePtr src,
int overlaped = 0;
Bool ret = FALSE;
if (nbox == 0)
return TRUE;
dst_pixmap = glamor_get_drawable_pixmap(dst);
dst_pixmap_priv = glamor_get_pixmap_private(dst_pixmap);
src_pixmap = glamor_get_drawable_pixmap(src);
src_pixmap_priv = glamor_get_pixmap_private(src_pixmap);
screen = dst_pixmap->drawable.pScreen;
glamor_priv = glamor_get_screen_private(dst->pScreen);
if (!GLAMOR_PIXMAP_PRIV_HAS_FBO(dst_pixmap_priv)) {