-#include <msp/gl/extensions/arb_draw_instanced.h>
#include <msp/gl/extensions/msp_primitive_restart.h>
#include "batch.h"
-#include "bindable.h"
#include "buffer.h"
#include "error.h"
#include "mesh.h"
Batch::Batch(PrimitiveType t):
prim_type(t),
+ gl_prim_type(GL::get_gl_primitive_type(prim_type)),
index_type(UNSIGNED_SHORT),
gl_index_type(get_gl_type(index_type)),
max_index(0),
void Batch::set_index_type(DataType t)
{
+ if(t==index_type)
+ return;
if(t!=UNSIGNED_SHORT && t!=UNSIGNED_INT)
throw invalid_argument("Batch::set_data_type");
if(t==UNSIGNED_SHORT && max_index>0xFFFE)
return *(UInt16 *)&data[i*sizeof(UInt16)];
}
-void Batch::draw() const
-{
- BindRestore _bind_ibuf(get_buffer(), ELEMENT_ARRAY_BUFFER);
- 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);
-
- BindRestore _bind_ibuf(get_buffer(), ELEMENT_ARRAY_BUFFER);
- 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);
- }
- else
- glDisable(GL_PRIMITIVE_RESTART);
-
- restart_index = index;
-}
-
Batch::Loader::Loader(Batch &b):
DataFile::ObjectLoader<Batch>(b)