+ bool can_append = false;
+ if(!batches.empty())
+ {
+ PrimitiveType type = b.get_type();
+ can_append = (type==batches.back().get_type() &&
+ type!=LINE_STRIP && type!=LINE_LOOP && type!=POLYGON &&
+ (type!=TRIANGLE_FAN || is_supported("GL_NV_primitive_restart")));
+ }
+
+ if(defer_ibuf)
+ {
+ ibuf = new Buffer(ELEMENT_ARRAY_BUFFER);
+ defer_ibuf = false;
+ }
+
+ if(can_append)
+ batches.back().append(b);
+ else
+ {
+ Batch *prev = (batches.empty() ? 0 : &batches.back());
+ batches.push_back(b);
+ if(ibuf)
+ batches.back().use_index_buffer(ibuf, prev);
+ }