X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fmesh.cpp;h=572ac6195502afc97259a45857d94998c666fa4d;hb=ae9abd6be3e556d0a202cc5ab05668da715382c9;hp=05be2c3745b8562b32f9c9b5a69e722fb4af5058;hpb=25c81b4953dd38993250321b9407ce8b0139cbeb;p=libs%2Fgl.git

diff --git a/source/mesh.cpp b/source/mesh.cpp
index 05be2c37..572ac619 100644
--- a/source/mesh.cpp
+++ b/source/mesh.cpp
@@ -1,12 +1,4 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007-2011  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #include "buffer.h"
-#include "extension.h"
 #include "mesh.h"
 #include "renderer.h"
 
@@ -18,13 +10,15 @@ namespace GL {
 Mesh::Mesh():
 	vertices(VERTEX3),
 	ibuf(0),
-	defer_ibuf(true)
+	defer_ibuf(true),
+	winding(0)
 { }
 
 Mesh::Mesh(const VertexFormat &f):
 	vertices(f),
 	ibuf(0),
-	defer_ibuf(true)
+	defer_ibuf(true),
+	winding(0)
 { }
 
 Mesh::~Mesh()
@@ -68,38 +62,35 @@ float *Mesh::modify_vertex(unsigned i)
 
 void Mesh::add_batch(const Batch &b)
 {
-	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)
+	if(!batches.empty() && batches.back().can_append(b.get_type()))
 		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);
+			batches.back().use_buffer(ibuf, prev);
 	}
 }
 
+void Mesh::set_winding(const WindingTest *w)
+{
+	winding = w;
+}
+
 void Mesh::draw() const
 {
 	vertices.apply();
 
 	if(ibuf)
 		ibuf->bind_to(ELEMENT_ARRAY_BUFFER);
+	Bind bind_winding(winding);
 
 	for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
 		i->draw();
@@ -112,22 +103,32 @@ void Mesh::draw(Renderer &renderer) const
 {
 	renderer.set_vertex_array(&vertices);
 	renderer.set_element_buffer(ibuf);
+	renderer.set_winding_test(winding);
 
 	for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
 		renderer.draw(*i);
+
+	renderer.set_winding_test(0);
 }
 
 
 Mesh::Loader::Loader(Mesh &m):
 	DataFile::ObjectLoader<Mesh>(m)
 {
-	add("vertices", &Loader::vertices);
 	add("batch",    &Loader::batch);
+	add("vertices", &Loader::vertices);
+	add("winding",  &Loader::winding);
 }
 
-void Mesh::Loader::vertices(VertexFormat f)
+void Mesh::Loader::vertices(const vector<VertexComponent> &c)
 {
-	obj.vertices.reset(f);
+	if(c.empty())
+		throw invalid_argument("No vertex components");
+
+	VertexFormat fmt;
+	for(vector<VertexComponent>::const_iterator i=c.begin(); i!=c.end(); ++i)
+		fmt = (fmt, *i);
+	obj.vertices.reset(fmt);
 	load_sub(obj.vertices);
 }
 
@@ -138,5 +139,13 @@ void Mesh::Loader::batch(PrimitiveType p)
 	obj.add_batch(btc);
 }
 
+void Mesh::Loader::winding(FaceWinding w)
+{
+	if(w==CLOCKWISE)
+		obj.winding = &WindingTest::clockwise();
+	else if(w==COUNTERCLOCKWISE)
+		obj.winding = &WindingTest::counterclockwise();
+}
+
 } // namespace GL
 } // namespace Msp