- return *(UInt32 *)&data[i*sizeof(UInt32)];
- else
- return *(UInt16 *)&data[i*sizeof(UInt16)];
-}
-
-void Batch::draw() const
-{
- const void *data_ptr = setup_draw();
- glDrawElements(prim_type, size(), gl_index_type, data_ptr);
-}
-
-void Batch::draw_instanced(unsigned count) const
-{
- static Require req(ARB_draw_instanced);
-
- const void *data_ptr = setup_draw();
- glDrawElementsInstanced(prim_type, size(), gl_index_type, data_ptr, count);
-}
-
-const void *Batch::setup_draw() const
-{
- if(!get_buffer())
- throw invalid_operation("Batch::setup_draw");
-
- if(restart)
- {
- unsigned index = (index_type==UNSIGNED_INT ? 0xFFFFFFFF : 0xFFFF);
-
- if(index!=restart_index)
- set_restart_index(index);
- }
- else if(restart_index && restart_index<=max_index)
- set_restart_index(0);
-
- refresh();
-
- return reinterpret_cast<const void *>(get_offset());
-}
-
-void Batch::set_restart_index(unsigned index)
-{
- if(index>0)
- {
- if(!restart_index)
- glEnable(GL_PRIMITIVE_RESTART);
- glPrimitiveRestartIndex(index);
- }