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modesetting: Clear new screen pixmap storage on RandR resize

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Fixes random garbage being visible intermittently.

Reviewed-by: Adam Jackson <ajax@redhat.com>
(Cherry picked from commit 9ba13bac9d)
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Michel Dänzer 2019-11-26 17:17:12 +01:00 committed by Kenneth Graunke
parent 094f42cdfe
commit 8aad09dd79
1 changed files with 15 additions and 0 deletions
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15
hw/xfree86/drivers/modesetting/drmmode_display.c
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@ -1795,6 +1795,19 @@ drmmode_set_scanout_pixmap(xf86CrtcPtr crtc, PixmapPtr ppix)
&drmmode_crtc->prime_pixmap);
}
static void
drmmode_clear_pixmap(PixmapPtr pixmap)
{
ScreenPtr screen = pixmap->drawable.pScreen;
GCPtr gc;
gc = GetScratchGC(pixmap->drawable.depth, screen);
if (gc) {
miClearDrawable(&pixmap->drawable, gc);
FreeScratchGC(gc);
}
}
static void *
drmmode_shadow_allocate(xf86CrtcPtr crtc, int width, int height)
{
@ -3179,6 +3192,8 @@ drmmode_xf86crtc_resize(ScrnInfoPtr scrn, int width, int height)
if (!drmmode_glamor_handle_new_screen_pixmap(drmmode))
goto fail;
drmmode_clear_pixmap(ppix);
for (i = 0; i < xf86_config->num_crtc; i++) {
xf86CrtcPtr crtc = xf86_config->crtc[i];