/**
* Basically, translate Mesa's index buffer information into
* a pipe_index_buffer object.
* \return TRUE or FALSE for success/failure
*/
static boolean
setup_index_buffer(struct st_context *st,
const struct _mesa_index_buffer *ib,
struct pipe_index_buffer *ibuffer)
{
struct gl_buffer_object *bufobj = ib->obj;
ibuffer->index_size = vbo_sizeof_ib_type(ib->type);
/* get/create the index buffer object */
if (_mesa_is_bufferobj(bufobj)) {
/* indices are in a real VBO */
ibuffer->buffer = st_buffer_object(bufobj)->buffer;
ibuffer->offset = pointer_to_offset(ib->ptr);
}
else if (st->indexbuf_uploader) {
/* upload indexes from user memory into a real buffer */
if (u_upload_data(st->indexbuf_uploader, 0,
ib->count * ibuffer->index_size, ib->ptr,
&ibuffer->offset, &ibuffer->buffer) != PIPE_OK) {
/* out of memory */
return FALSE;
}
u_upload_unmap(st->indexbuf_uploader);
}
else {
/* indices are in user space memory */
ibuffer->user_buffer = ib->ptr;
}
cso_set_index_buffer(st->cso_context, ibuffer);
return TRUE;
}
static void
setup_index_buffer(struct st_context *st,
const struct _mesa_index_buffer *ib,
struct pipe_index_buffer *ibuffer)
{
struct gl_buffer_object *bufobj = ib->obj;
ibuffer->index_size = vbo_sizeof_ib_type(ib->type);
/* get/create the index buffer object */
if (_mesa_is_bufferobj(bufobj)) {
/* indices are in a real VBO */
ibuffer->buffer = st_buffer_object(bufobj)->buffer;
ibuffer->offset = pointer_to_offset(ib->ptr);
}
else if (st->indexbuf_uploader) {
u_upload_data(st->indexbuf_uploader, 0, ib->count * ibuffer->index_size,
ib->ptr, &ibuffer->offset, &ibuffer->buffer);
u_upload_unmap(st->indexbuf_uploader);
}
else {
/* indices are in user space memory */
ibuffer->user_buffer = ib->ptr;
}
cso_set_index_buffer(st->cso_context, ibuffer);
}
