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From 5489029ff6508b37d71d47d905d744c436a49563 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <mdaenzer@redhat.com>
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Date: Tue, 26 Nov 2019 17:17:12 +0100
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Subject: [PATCH xserver 3/3] modesetting: Clear new screen pixmap storage on
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RandR resize
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Fixes random garbage being visible intermittently.
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Reviewed-by: Adam Jackson <ajax@redhat.com>
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(Cherry picked from commit 9ba13bac9dd076f166ff0d063fc144b904a40d12)
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Signed-off-by: Michel Dänzer <mdaenzer@redhat.com>
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---
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hw/xfree86/drivers/modesetting/drmmode_display.c | 15 +++++++++++++++
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1 file changed, 15 insertions(+)
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diff --git a/hw/xfree86/drivers/modesetting/drmmode_display.c b/hw/xfree86/drivers/modesetting/drmmode_display.c
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index 8786d13a3..eca058258 100644
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--- a/hw/xfree86/drivers/modesetting/drmmode_display.c
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+++ b/hw/xfree86/drivers/modesetting/drmmode_display.c
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@@ -1795,6 +1795,19 @@ drmmode_set_scanout_pixmap(xf86CrtcPtr crtc, PixmapPtr ppix)
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&drmmode_crtc->prime_pixmap);
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}
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+static void
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+drmmode_clear_pixmap(PixmapPtr pixmap)
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+{
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+ ScreenPtr screen = pixmap->drawable.pScreen;
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+ GCPtr gc;
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+
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+ gc = GetScratchGC(pixmap->drawable.depth, screen);
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+ if (gc) {
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+ miClearDrawable(&pixmap->drawable, gc);
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+ FreeScratchGC(gc);
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+ }
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+}
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+
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static void *
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drmmode_shadow_allocate(xf86CrtcPtr crtc, int width, int height)
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{
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@@ -3179,6 +3192,8 @@ drmmode_xf86crtc_resize(ScrnInfoPtr scrn, int width, int height)
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if (!drmmode_glamor_handle_new_screen_pixmap(drmmode))
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goto fail;
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+ drmmode_clear_pixmap(ppix);
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+
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for (i = 0; i < xf86_config->num_crtc; i++) {
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xf86CrtcPtr crtc = xf86_config->crtc[i];
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--
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2.24.0
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