X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fmesh.cpp;fp=source%2Fmesh.cpp;h=3569e1c38badaac3a1f705769bfd4e6e625ff3e0;hb=5f78db03b3285c977760a41da1e3927720e50352;hp=8f7911219ec68afa3cb9048d35960bef3462437c;hpb=76ca3c65dbb96461e42300016a85a4e158f5596b;p=libs%2Fgl.git

diff --git a/source/mesh.cpp b/source/mesh.cpp
index 8f791121..3569e1c3 100644
--- a/source/mesh.cpp
+++ b/source/mesh.cpp
@@ -29,6 +29,7 @@ void Mesh::init(ResourceManager *rm)
 {
 	vbuf = 0;
 	ibuf = 0;
+	dirty = 0;
 	disallow_rendering = false;
 	winding = 0;
 
@@ -49,20 +50,41 @@ void Mesh::clear()
 	batches.clear();
 }
 
-void Mesh::create_buffers()
+void Mesh::check_buffers(unsigned mask)
 {
-	if(vbuf && ibuf)
-		return;
-
-	if(!vbuf)
-		vbuf = new Buffer(ARRAY_BUFFER);
-	vertices.use_buffer(vbuf);
-
-	if(!ibuf)
-		ibuf = new Buffer(ELEMENT_ARRAY_BUFFER);
+	if(mask&VERTEX_BUFFER)
+	{
+		if(!vbuf)
+		{
+			vbuf = new Buffer(ARRAY_BUFFER);
+			vertices.use_buffer(vbuf);
+			vtx_setup.set_vertex_array(vertices);
+		}
+		unsigned req_size = vertices.get_required_buffer_size();
+		if(vbuf->get_size()<req_size)
+		{
+			dirty |= VERTEX_BUFFER;
+			vertices.buffer_resized();
+		}
+	}
 
-	vtx_setup.set_vertex_array(vertices);
-	vtx_setup.set_index_buffer(*ibuf);
+	if(mask&INDEX_BUFFER)
+	{
+		if(!ibuf)
+		{
+			ibuf = new Buffer(ELEMENT_ARRAY_BUFFER);
+			if(!batches.empty())
+				batches.front().use_buffer(ibuf);
+			vtx_setup.set_index_buffer(*ibuf);
+		}
+		unsigned req_size = (batches.empty() ? 0 : batches.front().get_required_buffer_size());
+		if(ibuf->get_size()<req_size)
+		{
+			dirty |= INDEX_BUFFER;
+			if(!batches.empty())
+				batches.front().buffer_resized();
+		}
+	}
 }
 
 unsigned Mesh::get_n_vertices() const
@@ -77,12 +99,11 @@ float *Mesh::modify_vertex(unsigned i)
 
 void Mesh::add_batch(const Batch &b)
 {
-	create_buffers();
-
 	if(batches.empty())
 	{
 		batches.push_back(b);
-		batches.back().use_buffer(ibuf);
+		if(ibuf)
+			batches.back().use_buffer(ibuf);
 	}
 	else if(batches.back().can_append(b.get_type()))
 		batches.back().append(b);
@@ -109,6 +130,8 @@ void Mesh::add_batch(const Batch &b)
 		else
 			batches.back().use_buffer(ibuf, prev);
 	}
+
+	check_buffers(INDEX_BUFFER);
 }
 
 void Mesh::set_winding(const WindingTest *w)
@@ -138,6 +161,9 @@ void Mesh::draw(Renderer &renderer, const VertexSetup *vs, unsigned count) const
 			return;
 	}
 
+	if(dirty)
+		resize_buffers();
+
 	renderer.set_vertex_setup(vs ? vs : &vtx_setup);
 	renderer.set_winding_test(winding);
 
@@ -153,6 +179,15 @@ void Mesh::draw(Renderer &renderer, const VertexSetup *vs, unsigned count) const
 	}
 }
 
+void Mesh::resize_buffers() const
+{
+	if(dirty&VERTEX_BUFFER)
+		vbuf->data(vertices.get_required_buffer_size(), 0);
+	if(dirty&INDEX_BUFFER)
+		ibuf->data(batches.front().get_required_buffer_size(), 0);
+	dirty = 0;
+}
+
 Resource::AsyncLoader *Mesh::load(IO::Seekable &io, const Resources *)
 {
 	return new AsyncLoader(*this, io);
@@ -197,10 +232,8 @@ void Mesh::Loader::vertices(const vector<VertexComponent> &c)
 	for(vector<VertexComponent>::const_iterator i=c.begin(); i!=c.end(); ++i)
 		fmt = (fmt, *i);
 	obj.vertices.reset(fmt);
-	if(obj.vbuf)
-		// Set it again to force the vertex setup to update
-		obj.vtx_setup.set_vertex_array(obj.vertices);
 	load_sub(obj.vertices);
+	obj.check_buffers(VERTEX_BUFFER);
 }
 
 void Mesh::Loader::batch(PrimitiveType p)
@@ -227,7 +260,7 @@ Mesh::AsyncLoader::AsyncLoader(Mesh &m, IO::Seekable &i):
 	phase(0)
 {
 	mesh.disallow_rendering = true;
-	mesh.create_buffers();
+	mesh.check_buffers(VERTEX_BUFFER|INDEX_BUFFER);
 }
 
 Mesh::AsyncLoader::~AsyncLoader()
@@ -253,6 +286,7 @@ bool Mesh::AsyncLoader::process()
 	}
 	else if(phase==1)
 	{
+		mesh.resize_buffers();
 		vertex_updater = mesh.vertices.refresh_async();
 		if(!mesh.batches.empty())
 			index_updater = mesh.batches.front().refresh_async();