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, 31 insertions, 0 deletions

diff --git a/src/mesa/main/externalobjects.h b/src/mesa/main/externalobjects.h
index f70be8e8ab9..a9a12b821f7 100644
--- a/src/mesa/main/externalobjects.h
+++ b/src/mesa/main/externalobjects.h
@@ -35,6 +35,37 @@
 #define EXTERNALOBJECTS_H
 
 #include "glheader.h"
+#include "hash.h"
+
+static inline struct gl_memory_object *
+_mesa_lookup_memory_object(struct gl_context *ctx, GLuint memory)
+{
+   if (!memory)
+      return NULL;
+
+   return (struct gl_memory_object *)
+      _mesa_HashLookup(ctx->Shared->MemoryObjects, memory);
+}
+
+static inline struct gl_memory_object *
+_mesa_lookup_memory_object_locked(struct gl_context *ctx, GLuint memory)
+{
+   if (!memory)
+      return NULL;
+
+   return (struct gl_memory_object *)
+      _mesa_HashLookupLocked(ctx->Shared->MemoryObjects, memory);
+}
+
+extern void
+_mesa_init_memory_object_functions(struct dd_function_table *driver);
+
+extern void
+_mesa_initialize_memory_object(struct gl_context *ctx,
+                               struct gl_memory_object *obj,
+                               GLuint name);
+extern void
+_mesa_delete_memory_object(struct gl_context *ctx, struct gl_memory_object *mo);
 
 extern void GLAPIENTRY
 _mesa_DeleteMemoryObjectsEXT(GLsizei n, const GLuint *memoryObjects);