X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fmesh.cpp;h=d43e0d0efdd421b43b209c0e8f4f280d2529c895;hb=76e338af116120d93d082ad247591ec9adad9233;hp=cba1bf57fdbcd8737183c90d06fb1d9c7a511d51;hpb=e92458a4a0e6191bff549a8b316dbbbd7c56e90f;p=libs%2Fgl.git

diff --git a/source/mesh.cpp b/source/mesh.cpp
index cba1bf57..d43e0d0e 100644
--- a/source/mesh.cpp
+++ b/source/mesh.cpp
@@ -5,6 +5,7 @@ Copyright © 2007  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
+#include "buffer.h"
 #include "mesh.h"
 
 using namespace std;
@@ -13,32 +14,87 @@ namespace Msp {
 namespace GL {
 
 Mesh::Mesh():
-	vertices(NODATA)
-{
-	vertices.use_vertex_buffer();
-}
+	vertices(VERTEX3),
+	ibuf(0)
+{ }
+
+Mesh::Mesh(const VertexFormat &f):
+	vertices(f),
+	ibuf(0)
+{ }
 
-Mesh::Mesh(VertexFormat f):
-	vertices(f)
+void Mesh::use_vertex_buffer(bool b)
 {
-	vertices.use_vertex_buffer();
+	if(b)
+	{
+		vertices.use_vertex_buffer();
+		if(!ibuf)
+			ibuf=new Buffer(ELEMENT_ARRAY_BUFFER);
+		update_index_buffer();
+	}
+	else
+	{
+		vertices.use_vertex_buffer(0);
+		delete ibuf;
+		ibuf=0;
+	}
 }
 
-RefPtr<MeshBuilder> Mesh::modify()
+float *Mesh::get_vertex(unsigned i)
 {
-	return new MeshBuilder(*this);
+	return vertices[i];
 }
 
 void Mesh::add_batch(const Batch &b)
 {
 	batches.push_back(b);
+	update_index_buffer();
+}
+
+void Mesh::clear()
+{
+	vertices.clear();
+	batches.clear();
 }
 
 void Mesh::draw() const
 {
 	vertices.apply();
+	if(ibuf)
+	{
+		ibuf->bind();
+		unsigned offset=0;
+		for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
+		{
+			i->draw_with_buffer(offset);
+			offset+=i->size();
+		}
+		ibuf->unbind();
+	}
+	else
+	{
+		for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
+			i->draw();
+	}
+}
+
+void Mesh::update_index_buffer()
+{
+	if(!ibuf)
+		return;
+
+	unsigned total=0;
+	for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
+		total+=i->size();
+
+	ibuf->data(total*sizeof(unsigned), 0);
+	unsigned offset=0;
 	for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
-		i->draw();
+	{
+		ibuf->sub_data(offset*sizeof(unsigned), i->size()*sizeof(unsigned), &i->get_indices()[0]);
+		offset+=i->size();
+	}
+	ibuf->unbind();
 }