1 files changed, 81 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/nouveau/nouveau_lock.c b/src/mesa/drivers/dri/nouveau/nouveau_lock.c
new file mode 100644
index 0000000000..c119d14dd7
--- /dev/null
+++ b/src/mesa/drivers/dri/nouveau/nouveau_lock.c
@@ -0,0 +1,81 @@
+/**************************************************************************
+
+Copyright 2006 Stephane Marchesin
+All Rights Reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining a
+copy of this software and associated documentation files (the "Software"),
+to deal in the Software without restriction, including without limitation
+on the rights to use, copy, modify, merge, publish, distribute, sub
+license, and/or sell copies of the Software, and to permit persons to whom
+the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice (including the next
+paragraph) shall be included in all copies or substantial portions of the
+Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
+DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+**************************************************************************/
+
+
+#include "nouveau_context.h"
+#include "nouveau_lock.h"
+
+#include "drirenderbuffer.h"
+#include "framebuffer.h"
+
+
+/* Update the hardware state.  This is called if another context has
+ * grabbed the hardware lock, which includes the X server.  This
+ * function also updates the driver's window state after the X server
+ * moves, resizes or restacks a window -- the change will be reflected
+ * in the drawable position and clip rects.  Since the X server grabs
+ * the hardware lock when it changes the window state, this routine will
+ * automatically be called after such a change.
+ */
+void nouveauGetLock( nouveauContextPtr nmesa, GLuint flags )
+{
+   __DRIdrawablePrivate *dPriv = nmesa->driDrawable;
+   __DRIscreenPrivate *sPriv = nmesa->driScreen;
+   drm_nouveau_sarea_t *sarea = nmesa->sarea;
+
+   drmGetLock( nmesa->driFd, nmesa->hHWContext, flags );
+
+   /* The window might have moved, so we might need to get new clip
+    * rects.
+    *
+    * NOTE: This releases and regrabs the hw lock to allow the X server
+    * to respond to the DRI protocol request for new drawable info.
+    * Since the hardware state depends on having the latest drawable
+    * clip rects, all state checking must be done _after_ this call.
+    */
+   DRI_VALIDATE_DRAWABLE_INFO( sPriv, dPriv );
+
+   /* If timestamps don't match, the window has been changed */
+   if (nmesa->lastStamp != dPriv->lastStamp) {
+      struct gl_framebuffer *fb = (struct gl_framebuffer *)dPriv->driverPrivate;
+
+      /* _mesa_resize_framebuffer will take care of calling the renderbuffer's
+       * AllocStorage function if we need more memory to hold it */
+      if (fb->Width != dPriv->w || fb->Height != dPriv->h) {
+	 _mesa_resize_framebuffer(nmesa->glCtx, fb, dPriv->w, dPriv->h);
+	 /* resize buffers, will call nouveau_window_moved */
+	 nouveau_build_framebuffer(nmesa->glCtx, fb);
+      } else {
+	 nouveau_window_moved(nmesa->glCtx);
+      }
+
+      nmesa->lastStamp = dPriv->lastStamp;
+   }
+
+   nmesa->numClipRects = dPriv->numClipRects;
+   nmesa->pClipRects = dPriv->pClipRects;
+
+}