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Diffstat (limited to 'src/mesa/main/arrayobj.c')
-rw-r--r--src/mesa/main/arrayobj.c148
1 files changed, 105 insertions, 43 deletions
diff --git a/src/mesa/main/arrayobj.c b/src/mesa/main/arrayobj.c
index b04095fd16..8ec73b9526 100644
--- a/src/mesa/main/arrayobj.c
+++ b/src/mesa/main/arrayobj.c
@@ -69,6 +69,32 @@ lookup_arrayobj(GLcontext *ctx, GLuint id)
/**
+ * For all the vertex arrays in the array object, unbind any pointers
+ * to any buffer objects (VBOs).
+ * This is done just prior to array object destruction.
+ */
+static void
+unbind_array_object_vbos(GLcontext *ctx, struct gl_array_object *obj)
+{
+ GLuint i;
+
+ _mesa_reference_buffer_object(ctx, &obj->Vertex.BufferObj, NULL);
+ _mesa_reference_buffer_object(ctx, &obj->Normal.BufferObj, NULL);
+ _mesa_reference_buffer_object(ctx, &obj->Color.BufferObj, NULL);
+ _mesa_reference_buffer_object(ctx, &obj->SecondaryColor.BufferObj, NULL);
+ _mesa_reference_buffer_object(ctx, &obj->FogCoord.BufferObj, NULL);
+ _mesa_reference_buffer_object(ctx, &obj->Index.BufferObj, NULL);
+ _mesa_reference_buffer_object(ctx, &obj->EdgeFlag.BufferObj, NULL);
+
+ for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++)
+ _mesa_reference_buffer_object(ctx, &obj->TexCoord[i].BufferObj, NULL);
+
+ for (i = 0; i < VERT_ATTRIB_MAX; i++)
+ _mesa_reference_buffer_object(ctx, &obj->VertexAttrib[i].BufferObj,NULL);
+}
+
+
+/**
* Allocate and initialize a new vertex array object.
*
* This function is intended to be called via
@@ -94,10 +120,70 @@ void
_mesa_delete_array_object( GLcontext *ctx, struct gl_array_object *obj )
{
(void) ctx;
+ unbind_array_object_vbos(ctx, obj);
+ _glthread_DESTROY_MUTEX(obj->Mutex);
_mesa_free(obj);
}
+/**
+ * Set ptr to arrayObj w/ reference counting.
+ */
+void
+_mesa_reference_array_object(GLcontext *ctx,
+ struct gl_array_object **ptr,
+ struct gl_array_object *arrayObj)
+{
+ if (*ptr == arrayObj)
+ return;
+
+ if (*ptr) {
+ /* Unreference the old array object */
+ GLboolean deleteFlag = GL_FALSE;
+ struct gl_array_object *oldObj = *ptr;
+
+ _glthread_LOCK_MUTEX(oldObj->Mutex);
+ ASSERT(oldObj->RefCount > 0);
+ oldObj->RefCount--;
+#if 0
+ printf("ArrayObj %p %d DECR to %d\n",
+ (void *) oldObj, oldObj->Name, oldObj->RefCount);
+#endif
+ deleteFlag = (oldObj->RefCount == 0);
+ _glthread_UNLOCK_MUTEX(oldObj->Mutex);
+
+ if (deleteFlag) {
+ ASSERT(ctx->Driver.DeleteArrayObject);
+ ctx->Driver.DeleteArrayObject(ctx, oldObj);
+ }
+
+ *ptr = NULL;
+ }
+ ASSERT(!*ptr);
+
+ if (arrayObj) {
+ /* reference new array object */
+ _glthread_LOCK_MUTEX(arrayObj->Mutex);
+ if (arrayObj->RefCount == 0) {
+ /* this array's being deleted (look just above) */
+ /* Not sure this can every really happen. Warn if it does. */
+ _mesa_problem(NULL, "referencing deleted array object");
+ *ptr = NULL;
+ }
+ else {
+ arrayObj->RefCount++;
+#if 0
+ printf("ArrayObj %p %d INCR to %d\n",
+ (void *) arrayObj, arrayObj->Name, arrayObj->RefCount);
+#endif
+ *ptr = arrayObj;
+ }
+ _glthread_UNLOCK_MUTEX(arrayObj->Mutex);
+ }
+}
+
+
+
static void
init_array(GLcontext *ctx,
struct gl_client_array *array, GLint size, GLint type)
@@ -112,7 +198,8 @@ init_array(GLcontext *ctx,
array->Normalized = GL_FALSE;
#if FEATURE_ARB_vertex_buffer_object
/* Vertex array buffers */
- array->BufferObj = ctx->Array.NullBufferObj;
+ _mesa_reference_buffer_object(ctx, &array->BufferObj,
+ ctx->Shared->NullBufferObj);
#endif
}
@@ -129,6 +216,9 @@ _mesa_initialize_array_object( GLcontext *ctx,
obj->Name = name;
+ _glthread_INIT_MUTEX(obj->Mutex);
+ obj->RefCount = 1;
+
/* Init the individual arrays */
init_array(ctx, &obj->Vertex, 4, GL_FLOAT);
init_array(ctx, &obj->Normal, 3, GL_FLOAT);
@@ -153,8 +243,8 @@ _mesa_initialize_array_object( GLcontext *ctx,
/**
* Add the given array object to the array object pool.
*/
-void
-_mesa_save_array_object( GLcontext *ctx, struct gl_array_object *obj )
+static void
+save_array_object( GLcontext *ctx, struct gl_array_object *obj )
{
if (obj->Name > 0) {
/* insert into hash table */
@@ -167,8 +257,8 @@ _mesa_save_array_object( GLcontext *ctx, struct gl_array_object *obj )
* Remove the given array object from the array object pool.
* Do not deallocate the array object though.
*/
-void
-_mesa_remove_array_object( GLcontext *ctx, struct gl_array_object *obj )
+static void
+remove_array_object( GLcontext *ctx, struct gl_array_object *obj )
{
if (obj->Name > 0) {
/* remove from hash table */
@@ -177,15 +267,6 @@ _mesa_remove_array_object( GLcontext *ctx, struct gl_array_object *obj )
}
-static void
-unbind_buffer_object( GLcontext *ctx, struct gl_buffer_object *bufObj )
-{
- if (bufObj != ctx->Array.NullBufferObj) {
- _mesa_reference_buffer_object(ctx, &bufObj, NULL);
- }
-}
-
-
/**********************************************************************/
/* API Functions */
/**********************************************************************/
@@ -212,7 +293,7 @@ _mesa_BindVertexArrayAPPLE( GLuint id )
return; /* rebinding the same array object- no change */
/*
- * Get pointer to new array object (newBufObj)
+ * Get pointer to new array object (newObj)
*/
if (id == 0) {
/* The spec says there is no array object named 0, but we use
@@ -226,21 +307,18 @@ _mesa_BindVertexArrayAPPLE( GLuint id )
if (!newObj) {
/* If this is a new array object id, allocate an array object now.
*/
-
newObj = (*ctx->Driver.NewArrayObject)(ctx, id);
if (!newObj) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindVertexArrayAPPLE");
return;
}
- _mesa_save_array_object(ctx, newObj);
+ save_array_object(ctx, newObj);
}
}
-
ctx->NewState |= _NEW_ARRAY;
ctx->Array.NewState |= _NEW_ARRAY_ALL;
- ctx->Array.ArrayObj = newObj;
-
+ _mesa_reference_array_object(ctx, &ctx->Array.ArrayObj, newObj);
/* Pass BindVertexArray call to device driver */
if (ctx->Driver.BindArrayObject && newObj)
@@ -274,7 +352,6 @@ _mesa_DeleteVertexArraysAPPLE(GLsizei n, const GLuint *ids)
if ( obj != NULL ) {
ASSERT( obj->Name == ids[i] );
-
/* If the array object is currently bound, the spec says "the binding
* for that object reverts to zero and the default vertex array
* becomes current."
@@ -283,28 +360,13 @@ _mesa_DeleteVertexArraysAPPLE(GLsizei n, const GLuint *ids)
CALL_BindVertexArrayAPPLE( ctx->Exec, (0) );
}
-#if FEATURE_ARB_vertex_buffer_object
- /* Unbind any buffer objects that might be bound to arrays in
- * this array object.
- */
- unbind_buffer_object( ctx, obj->Vertex.BufferObj );
- unbind_buffer_object( ctx, obj->Normal.BufferObj );
- unbind_buffer_object( ctx, obj->Color.BufferObj );
- unbind_buffer_object( ctx, obj->SecondaryColor.BufferObj );
- unbind_buffer_object( ctx, obj->FogCoord.BufferObj );
- unbind_buffer_object( ctx, obj->Index.BufferObj );
- for (i = 0; i < MAX_TEXTURE_COORD_UNITS; i++) {
- unbind_buffer_object( ctx, obj->TexCoord[i].BufferObj );
- }
- unbind_buffer_object( ctx, obj->EdgeFlag.BufferObj );
- for (i = 0; i < VERT_ATTRIB_MAX; i++) {
- unbind_buffer_object( ctx, obj->VertexAttrib[i].BufferObj );
- }
-#endif
-
/* The ID is immediately freed for re-use */
- _mesa_remove_array_object(ctx, obj);
- ctx->Driver.DeleteArrayObject(ctx, obj);
+ remove_array_object(ctx, obj);
+
+ /* Unreference the array object.
+ * If refcount hits zero, the object will be deleted.
+ */
+ _mesa_reference_array_object(ctx, &obj, NULL);
}
}
@@ -353,7 +415,7 @@ _mesa_GenVertexArraysAPPLE(GLsizei n, GLuint *arrays)
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glGenVertexArraysAPPLE");
return;
}
- _mesa_save_array_object(ctx, obj);
+ save_array_object(ctx, obj);
arrays[i] = first + i;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-12 01:48:10 +0000