/**
* Helper for _mesa_BindVertexArray() and _mesa_BindVertexArrayAPPLE().
* \param genRequired specifies behavour when id was not generated with
* glGenVertexArrays().
*/
static void
bind_vertex_array(struct gl_context *ctx, GLuint id, GLboolean genRequired)
{
struct gl_array_object * const oldObj = ctx->Array.ArrayObj;
struct gl_array_object *newObj = NULL;
ASSERT_OUTSIDE_BEGIN_END(ctx);
ASSERT(oldObj != NULL);
if ( oldObj->Name == id )
return; /* rebinding the same array object- no change */
/*
* Get pointer to new array object (newObj)
*/
if (id == 0) {
/* The spec says there is no array object named 0, but we use
* one internally because it simplifies things.
*/
newObj = ctx->Array.DefaultArrayObj;
}
else {
/* non-default array object */
newObj = lookup_arrayobj(ctx, id);
if (!newObj) {
if (genRequired) {
_mesa_error(ctx, GL_INVALID_OPERATION, "glBindVertexArray(id)");
return;
}
/* For APPLE version, generate a new array object now */
newObj = (*ctx->Driver.NewArrayObject)(ctx, id);
if (!newObj) {
_mesa_error(ctx, GL_OUT_OF_MEMORY, "glBindVertexArrayAPPLE");
return;
}
save_array_object(ctx, newObj);
}
if (!newObj->_Used) {
/* The "Interactions with APPLE_vertex_array_object" section of the
* GL_ARB_vertex_array_object spec says:
*
* "The first bind call, either BindVertexArray or
* BindVertexArrayAPPLE, determines the semantic of the object."
*/
newObj->ARBsemantics = genRequired;
newObj->_Used = GL_TRUE;
}
}
ctx->NewState |= _NEW_ARRAY;
ctx->Array.NewState |= VERT_BIT_ALL;
_mesa_reference_array_object(ctx, &ctx->Array.ArrayObj, newObj);
/* Pass BindVertexArray call to device driver */
if (ctx->Driver.BindArrayObject && newObj)
ctx->Driver.BindArrayObject(ctx, newObj);
}
/**
* Delete a set of array objects.
*
* \param n Number of array objects to delete.
* \param ids Array of \c n array object IDs.
*/
void GLAPIENTRY
_mesa_DeleteVertexArraysAPPLE(GLsizei n, const GLuint *ids)
{
GET_CURRENT_CONTEXT(ctx);
GLsizei i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glDeleteVertexArrayAPPLE(n)");
return;
}
_glthread_LOCK_MUTEX(ctx->Shared->Mutex);
for (i = 0; i < n; i++) {
struct gl_array_object *obj = lookup_arrayobj(ctx, ids[i]);
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."
*/
if ( obj == ctx->Array.ArrayObj ) {
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_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);
}
}
_glthread_UNLOCK_MUTEX(ctx->Shared->Mutex);
}
/**
* Determine if ID is the name of an array object.
*
* \param id ID of the potential array object.
* \return \c GL_TRUE if \c id is the name of a array object,
* \c GL_FALSE otherwise.
*/
GLboolean GLAPIENTRY
_mesa_IsVertexArrayAPPLE( GLuint id )
{
struct gl_array_object * obj;
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_WITH_RETVAL(ctx, GL_FALSE);
if (id == 0)
return GL_FALSE;
obj = lookup_arrayobj(ctx, id);
return (obj != NULL) ? GL_TRUE : GL_FALSE;
}
/**
* Bind a new array.
*
* \todo
* The binding could be done more efficiently by comparing the non-NULL
* pointers in the old and new objects. The only arrays that are "dirty" are
* the ones that are non-NULL in either object.
*/
void GLAPIENTRY
_mesa_BindVertexArrayAPPLE( GLuint id )
{
GET_CURRENT_CONTEXT(ctx);
struct gl_array_object * const oldObj = ctx->Array.ArrayObj;
struct gl_array_object *newObj = NULL;
ASSERT_OUTSIDE_BEGIN_END(ctx);
ASSERT(oldObj != NULL);
if ( oldObj->Name == id )
return; /* rebinding the same array object- no change */
/*
* Get pointer to new array object (newBufObj)
*/
if (id == 0) {
/* The spec says there is no array object named 0, but we use
* one internally because it simplifies things.
*/
newObj = ctx->Array.DefaultArrayObj;
}
else {
/* non-default array object */
newObj = lookup_arrayobj(ctx, 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);
}
}
ctx->NewState |= _NEW_ARRAY;
ctx->Array.NewState |= _NEW_ARRAY_ALL;
ctx->Array.ArrayObj = newObj;
/* Pass BindVertexArray call to device driver */
if (ctx->Driver.BindArrayObject && newObj)
(*ctx->Driver.BindArrayObject)( ctx, newObj );
}
/**
* Delete a set of array objects.
*
* \param n Number of array objects to delete.
* \param ids Array of \c n array object IDs.
*/
void GLAPIENTRY
_mesa_DeleteVertexArraysAPPLE(GLsizei n, const GLuint *ids)
{
GET_CURRENT_CONTEXT(ctx);
GLsizei i;
ASSERT_OUTSIDE_BEGIN_END(ctx);
if (n < 0) {
_mesa_error(ctx, GL_INVALID_VALUE, "glDeleteVertexArrayAPPLE(n)");
return;
}
for (i = 0; i < n; i++) {
struct gl_array_object *obj = lookup_arrayobj(ctx, ids[i]);
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."
*/
if ( obj == ctx->Array.ArrayObj ) {
CALL_BindVertexArrayAPPLE( ctx->Exec, (0) );
}
/* The ID is immediately freed for re-use */
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);
}
}
}
