From a93f9f343a64ce91587af66761399f9d4c180015 Mon Sep 17 00:00:00 2001
From: Jakob Bornecrantz <jakob@vmware.com>
Date: Fri, 21 May 2010 20:37:23 +0100
Subject: gallium: Fix invalidate framebuffer with old libGL libraries

---
 src/gallium/state_trackers/dri/common/dri_drawable.c | 2 +-
 src/gallium/state_trackers/dri/common/dri_screen.c   | 9 ++++++++-
 src/gallium/state_trackers/dri/common/dri_screen.h   | 3 +++
 src/gallium/state_trackers/dri/drm/dri2.c            | 1 +
 4 files changed, 13 insertions(+), 2 deletions(-)

(limited to 'src/gallium/state_trackers/dri')

diff --git a/src/gallium/state_trackers/dri/common/dri_drawable.c b/src/gallium/state_trackers/dri/common/dri_drawable.c
index 25892fc7a7..2bc0faffef 100644
--- a/src/gallium/state_trackers/dri/common/dri_drawable.c
+++ b/src/gallium/state_trackers/dri/common/dri_drawable.c
@@ -67,7 +67,7 @@ dri_st_framebuffer_validate(struct st_framebuffer_iface *stfbi,
     */
    new_stamp = (drawable->texture_stamp != drawable->dPriv->lastStamp);
 
-   if (new_stamp || new_mask) {
+   if (new_stamp || new_mask || screen->broken_invalidate) {
       if (new_stamp && screen->update_drawable_info)
          screen->update_drawable_info(drawable);
 
diff --git a/src/gallium/state_trackers/dri/common/dri_screen.c b/src/gallium/state_trackers/dri/common/dri_screen.c
index f5c936e182..5decdb23b1 100644
--- a/src/gallium/state_trackers/dri/common/dri_screen.c
+++ b/src/gallium/state_trackers/dri/common/dri_screen.c
@@ -341,7 +341,14 @@ static int
 dri_get_param(struct st_manager *smapi,
               enum st_manager_param param)
 {
-   return 0;
+   struct dri_screen *screen = (struct dri_screen *)smapi;
+
+   switch(param) {
+   case ST_MANAGER_BROKEN_INVALIDATE:
+      return screen->broken_invalidate;
+   default:
+      return 0;
+   }
 }
 
 static void
diff --git a/src/gallium/state_trackers/dri/common/dri_screen.h b/src/gallium/state_trackers/dri/common/dri_screen.h
index 1740fa8f42..9ff925d4be 100644
--- a/src/gallium/state_trackers/dri/common/dri_screen.h
+++ b/src/gallium/state_trackers/dri/common/dri_screen.h
@@ -50,6 +50,9 @@ struct dri_screen
    struct st_manager base;
    struct st_api *st_api;
 
+   /* on old libGL's invalidate doesn't get called as it should */
+   boolean broken_invalidate;
+
    /* dri */
    __DRIscreen *sPriv;
 
diff --git a/src/gallium/state_trackers/dri/drm/dri2.c b/src/gallium/state_trackers/dri/drm/dri2.c
index e1216f14c0..6c022f4bbf 100644
--- a/src/gallium/state_trackers/dri/drm/dri2.c
+++ b/src/gallium/state_trackers/dri/drm/dri2.c
@@ -526,6 +526,7 @@ dri2_init_screen(__DRIscreen * sPriv)
       goto fail;
 
    screen->auto_fake_front = dri_with_format(sPriv);
+   screen->broken_invalidate = !sPriv->dri2.useInvalidate;
 
    return configs;
 fail:
-- 
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