mesa: add support for memory object creation/import/delete

Used by EXT_external_objects and EXT_external_objects_fd

V2 (Timothy Arceri):
 - Throw GL_OUT_OF_MEMORY error if CreateMemoryObjectsEXT()
   fails.
 - C99 tidy ups
 - remove void cast (Constantine Kharlamov)

V3 (Timothy Arceri):
 - rename mo -> memObj
 - check that the object is not NULL before initializing
 - add missing "EXT" in function error message

V4 (Timothy Arceri):
 - remove checks for (memory objecy id == 0) and catch in
   _mesa_lookup_memory_object() instead.

Signed-off-by: Andres Rodriguez <[email protected]>
Reviewed-by: Samuel Pitoiset <[email protected]>

1 files changed, 17 insertions, 0 deletions

diff --git a/src/mesa/main/shared.c b/src/mesa/main/shared.c
index 6926d40570b..2cce47e2268 100644
--- a/src/mesa/main/shared.c
+++ b/src/mesa/main/shared.c
@@ -130,6 +130,7 @@ _mesa_alloc_shared_state(struct gl_context *ctx)
    shared->SyncObjects = _mesa_set_create(NULL, _mesa_hash_pointer,
                                           _mesa_key_pointer_equal);
 
+   shared->MemoryObjects = _mesa_NewHashTable();
    return shared;
 }
 
@@ -295,6 +296,17 @@ delete_sampler_object_cb(GLuint id, void *data, void *userData)
    _mesa_reference_sampler_object(ctx, &sampObj, NULL);
 }
 
+/**
+ * Callback for deleting a memory object.  Called by _mesa_HashDeleteAll().
+ */
+static void
+delete_memory_object_cb(GLuint id, void *data, void *userData)
+{
+   struct gl_memory_object *memObj = (struct gl_memory_object *) data;
+   struct gl_context *ctx = (struct gl_context *) userData;
+   ctx->Driver.DeleteMemoryObject(ctx, memObj);
+}
+
 
 /**
  * Deallocate a shared state object and all children structures.
@@ -379,6 +391,11 @@ free_shared_state(struct gl_context *ctx, struct gl_shared_state *shared)
 
    _mesa_free_shared_handles(shared);
 
+   if (shared->MemoryObjects) {
+      _mesa_HashDeleteAll(shared->MemoryObjects, delete_memory_object_cb, ctx);
+      _mesa_DeleteHashTable(shared->MemoryObjects);
+   }
+
    mtx_destroy(&shared->Mutex);
    mtx_destroy(&shared->TexMutex);