Add back a mostly-correct glFinish for GEM and fake.

The right solution would probably be keeping a list of regions which have been
rendered to.

2 files changed, 15 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/common/dri_bufmgr.c b/src/mesa/drivers/dri/common/dri_bufmgr.c
index 19ea2a8f86d..be2a7b740c3 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr.c
+++ b/src/mesa/drivers/dri/common/dri_bufmgr.c
@@ -128,6 +128,12 @@ dri_bo_get_subdata(dri_bo *bo, unsigned long offset,
 }
 
 void
+dri_bo_wait_rendering(dri_bo *bo)
+{
+   bo->bufmgr->bo_wait_rendering(bo);
+}
+
+void
 dri_bufmgr_destroy(dri_bufmgr *bufmgr)
 {
    bufmgr->destroy(bufmgr);
diff --git a/src/mesa/drivers/dri/common/dri_bufmgr.h b/src/mesa/drivers/dri/common/dri_bufmgr.h
index 29f9aea2b15..1abca08cc8a 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr.h
+++ b/src/mesa/drivers/dri/common/dri_bufmgr.h
@@ -128,6 +128,14 @@ struct _dri_bufmgr {
 			  unsigned long size, void *data);
 
    /**
+    * Waits for rendering to an object by the GPU to have completed.
+    *
+    * This is not required for any access to the BO by bo_map, bo_subdata, etc.
+    * It is merely a way for the driver to implement glFinish.
+    */
+   void (*bo_wait_rendering) (dri_bo *bo);
+
+   /**
     * Tears down the buffer manager instance.
     */
    void (*destroy)(dri_bufmgr *bufmgr);
@@ -192,6 +200,7 @@ int dri_bo_subdata(dri_bo *bo, unsigned long offset,
 		   unsigned long size, const void *data);
 int dri_bo_get_subdata(dri_bo *bo, unsigned long offset,
 		       unsigned long size, void *data);
+void dri_bo_wait_rendering(dri_bo *bo);
 
 void dri_bufmgr_set_debug(dri_bufmgr *bufmgr, GLboolean enable_debug);
 void dri_bufmgr_destroy(dri_bufmgr *bufmgr);