From 6b6cc4b039399c19ec0d12579ba51031ebfd695e Mon Sep 17 00:00:00 2001
From: Chris Wilson <chris@chris-wilson.co.uk>
Date: Fri, 21 Dec 2012 12:04:41 +0000
Subject: [PATCH] uxa: Flush around glyph updates

Attempt to w/a some or other bug in the gen3 glyph drawing routines.
---
 src/intel_uxa.c  |    7 +++++++
 uxa/uxa-glyphs.c |    4 ++++
 uxa/uxa-priv.h   |    2 ++
 uxa/uxa.c        |    7 +++++++
 uxa/uxa.h        |    2 ++
 5 files changed, 22 insertions(+)

diff --git a/src/intel_uxa.c b/src/intel_uxa.c
index f5ac0a6..4937314 100644
--- a/src/intel_uxa.c
+++ b/src/intel_uxa.c
@@ -684,6 +684,11 @@ static Bool intel_uxa_pixmap_is_offscreen(PixmapPtr pixmap)
 	return intel_pixmap_is_offscreen(pixmap);
 }
 
+static void intel_uxa_flush(ScreenPtr pScreen)
+{
+	intel_batch_submit(xf86ScreenToScrn(pixmap->drawable.pScreen));
+}
+
 static Bool intel_uxa_prepare_access(PixmapPtr pixmap, uxa_access_t access)
 {
 	ScrnInfoPtr scrn = xf86ScreenToScrn(pixmap->drawable.pScreen);
@@ -1336,6 +1341,8 @@ Bool intel_uxa_init(ScreenPtr screen)
 	intel->surface_used = 0;
 	intel->surface_reloc = 0;
 
+	intel->uxa_driver->flush = intel_uxa_flush;
+
 	/* Solid fill */
 	intel->uxa_driver->check_solid = intel_uxa_check_solid;
 	intel->uxa_driver->prepare_solid = intel_uxa_prepare_solid;
diff --git a/uxa/uxa-glyphs.c b/uxa/uxa-glyphs.c
index f5d4d08..fea9f80 100644
--- a/uxa/uxa-glyphs.c
+++ b/uxa/uxa-glyphs.c
@@ -246,6 +246,8 @@ uxa_glyph_cache_upload_glyph(ScreenPtr screen,
 	PixmapPtr scratch;
 	GCPtr gc;
 
+	uxa_flush(screen);
+
 	gc = GetScratchGC(pCachePixmap->drawable.depth, screen);
 	if (!gc)
 		return;
@@ -303,6 +305,8 @@ uxa_glyph_cache_upload_glyph(ScreenPtr screen,
 		screen->DestroyPixmap(scratch);
 
 	FreeScratchGC(gc);
+
+	uxa_flush(screen);
 }
 
 void
diff --git a/uxa/uxa-priv.h b/uxa/uxa-priv.h
index 3f639e7..ecc1830 100644
--- a/uxa/uxa-priv.h
+++ b/uxa/uxa-priv.h
@@ -190,6 +190,8 @@ typedef struct {
   */
 void exaDDXDriverInit(ScreenPtr pScreen);
 
+void uxa_flush(ScreenPtr pScreen);
+
 Bool uxa_prepare_access_window(WindowPtr pWin);
 
 void uxa_finish_access_window(WindowPtr pWin);
diff --git a/uxa/uxa.c b/uxa/uxa.c
index 2635b50..eb15d4b 100644
--- a/uxa/uxa.c
+++ b/uxa/uxa.c
@@ -135,6 +135,13 @@ PixmapPtr uxa_get_offscreen_pixmap(DrawablePtr drawable, int *xp, int *yp)
 		return NULL;
 }
 
+void uxa_flush(ScreenPtr pScreen)
+{
+	uxa_screen_t *uxa_screen = uxa_get_screen(pScreen);
+	if (uxa_screen->info->flush)
+		(*uxa_screen->info->flush) (pScreen);
+}
+
 /**
  * uxa_prepare_access() is UXA's wrapper for the driver's PrepareAccess() handler.
  *
diff --git a/uxa/uxa.h b/uxa/uxa.h
index b8569f0..296a535 100644
--- a/uxa/uxa.h
+++ b/uxa/uxa.h
@@ -75,6 +75,8 @@ typedef struct _UxaDriver {
 	/** @name solid
 	 * @{
 	 */
+	void (*flush) (ScreenPtr pScreen);
+
 	/**
 	 * check_solid() checks whether the driver can do a solid fill to this drawable.
 	 * @param pDrawable Destination drawable
-- 
1.7.10.4