X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Fmesh.cpp;h=dba8a9915489aede7906f8a684b9d59e288428b5;hp=a1930d75d124bc35f9d6c40374b9cb7b2f64cb6a;hb=bec07999d95b76f4b47cffcc564d0cd0afc0435e;hpb=083578c2ca0aabfa60e8872e23d53e9101795dff

diff --git a/source/mesh.cpp b/source/mesh.cpp
index a1930d75..dba8a991 100644
--- a/source/mesh.cpp
+++ b/source/mesh.cpp
@@ -1,33 +1,47 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007-2010  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
+#include <msp/gl/extensions/arb_vertex_array_object.h>
+#include <msp/gl/extensions/arb_vertex_buffer_object.h>
+#include <msp/gl/extensions/arb_vertex_shader.h>
 #include "buffer.h"
-#include "extension.h"
+#include "error.h"
 #include "mesh.h"
+#include "renderer.h"
+#include "resourcemanager.h"
+#include "vertexsetup.h"
 
 using namespace std;
 
 namespace Msp {
 namespace GL {
 
-Mesh::Mesh():
-	vertices(VERTEX3),
-	ibuf(0),
-	defer_ibuf(true)
-{ }
+Mesh::Mesh(ResourceManager *rm):
+	vertices(VERTEX3)
+{
+	init(rm);
+}
 
-Mesh::Mesh(const VertexFormat &f):
-	vertices(f),
-	ibuf(0),
-	defer_ibuf(true)
-{ }
+Mesh::Mesh(const VertexFormat &f, ResourceManager *rm):
+	vertices(f)
+{
+	init(rm);
+}
+
+void Mesh::init(ResourceManager *rm)
+{
+	vbuf = 0;
+	ibuf = 0;
+	dirty = 0;
+	disallow_rendering = false;
+	winding = 0;
+
+	if(rm)
+		set_manager(rm);
+}
 
 Mesh::~Mesh()
 {
+	set_manager(0);
+	batches.clear();
+	delete vbuf;
 	delete ibuf;
 }
 
@@ -37,21 +51,33 @@ void Mesh::clear()
 	batches.clear();
 }
 
-void Mesh::use_buffers(bool b)
+void Mesh::check_buffers(unsigned mask)
 {
-	if(b)
+	if(mask&VERTEX_BUFFER)
 	{
-		vertices.use_vertex_buffer();
-		if(!ibuf)
-			ibuf = new Buffer(ELEMENT_ARRAY_BUFFER);
-		defer_ibuf = false;
+		unsigned req_size = vertices.get_required_buffer_size();
+		if(!vbuf || (vbuf->get_size()>0 && vbuf->get_size()<req_size))
+		{
+			delete vbuf;
+			vbuf = new Buffer(ARRAY_BUFFER);
+			vertices.use_buffer(vbuf);
+			vtx_setup.set_vertex_array(vertices);
+			dirty |= VERTEX_BUFFER;
+		}
 	}
-	else
+
+	if(mask&INDEX_BUFFER)
 	{
-		vertices.use_vertex_buffer(0);
-		delete ibuf;
-		ibuf = 0;
-		defer_ibuf = false;
+		unsigned req_size = (batches.empty() ? 0 : batches.front().get_required_buffer_size());
+		if(!ibuf || (ibuf->get_size()>0 && ibuf->get_size()<req_size))
+		{
+			delete ibuf;
+			ibuf = new Buffer(ELEMENT_ARRAY_BUFFER);
+			if(!batches.empty())
+				batches.front().change_buffer(ibuf);
+			vtx_setup.set_index_buffer(*ibuf);
+			dirty |= INDEX_BUFFER;
+		}
 	}
 }
 
@@ -67,58 +93,146 @@ float *Mesh::modify_vertex(unsigned i)
 
 void Mesh::add_batch(const Batch &b)
 {
-	bool can_append = false;
-	if(!batches.empty())
+	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")));
+		batches.push_back(b);
+		if(ibuf)
+			batches.back().use_buffer(ibuf);
 	}
+	else if(batches.back().can_append(b.get_type()))
+		batches.back().append(b);
+	else
+	{
+		bool reallocate = (batches.size()==batches.capacity());
+		if(reallocate)
+		{
+			for(vector<Batch>::iterator i=batches.end(); i!=batches.begin(); )
+				(--i)->use_buffer(0);
+		}
 
-	if(defer_ibuf)
+		Batch *prev = &batches.back();
+		batches.push_back(b);
+		if(reallocate)
+		{
+			prev = 0;
+			for(vector<Batch>::iterator i=batches.begin(); i!=batches.end(); ++i)
+			{
+				i->use_buffer(ibuf, prev);
+				prev = &*i;
+			}
+		}
+		else
+			batches.back().use_buffer(ibuf, prev);
+	}
+
+	check_buffers(INDEX_BUFFER);
+}
+
+void Mesh::set_winding(const WindingTest *w)
+{
+	winding = w;
+}
+
+void Mesh::draw(Renderer &renderer) const
+{
+	draw(renderer, 0, 0);
+}
+
+void Mesh::draw_instanced(Renderer &renderer, const VertexSetup &vs, unsigned count) const
+{
+	if(vs.get_vertex_array()!=&vertices)
+		throw invalid_argument("Mesh::draw_instanced");
+
+	draw(renderer, &vs, count);
+}
+
+void Mesh::draw(Renderer &renderer, const VertexSetup *vs, unsigned count) const
+{
+	if(manager)
 	{
-		ibuf = new Buffer(ELEMENT_ARRAY_BUFFER);
-		defer_ibuf = false;
+		manager->resource_used(*this);
+		if(disallow_rendering)
+			return;
 	}
 
-	if(can_append)
-		batches.back().append(b);
+	if(dirty)
+		resize_buffers();
+
+	renderer.set_vertex_setup(vs ? vs : &vtx_setup);
+	renderer.set_winding_test(winding);
+
+	if(!count)
+	{
+		for(vector<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
+			renderer.draw(*i);
+	}
 	else
 	{
-		Batch *prev = (batches.empty() ? 0 : &batches.back());
-		batches.push_back(b);
-		if(ibuf)
-			batches.back().use_index_buffer(ibuf, prev);
+		for(vector<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
+			renderer.draw_instanced(*i, count);
 	}
 }
 
-void Mesh::draw() const
+void Mesh::resize_buffers() const
 {
-	vertices.apply();
-
-	if(ibuf)
-		ibuf->bind_to(ELEMENT_ARRAY_BUFFER);
+	if(dirty&VERTEX_BUFFER)
+		vbuf->storage(vertices.get_required_buffer_size());
+	if(dirty&INDEX_BUFFER)
+		ibuf->storage(batches.front().get_required_buffer_size());
+	dirty = 0;
+}
 
-	for(list<Batch>::const_iterator i=batches.begin(); i!=batches.end(); ++i)
-		i->draw();
+Resource::AsyncLoader *Mesh::load(IO::Seekable &io, const Resources *)
+{
+	return new AsyncLoader(*this, io);
+}
 
+UInt64 Mesh::get_data_size() const
+{
+	UInt64 size = 0;
+	if(vbuf)
+		size += vbuf->get_size();
 	if(ibuf)
-		Buffer::unbind_from(ELEMENT_ARRAY_BUFFER);
+		size += ibuf->get_size();
+	return size;
 }
 
+void Mesh::unload()
+{
+	vertices.clear();
+	vertices.use_buffer(0);
+	batches.clear();
+	delete vbuf;
+	delete ibuf;
+	vbuf = 0;
+	ibuf = 0;
+}
 
-Mesh::Loader::Loader(Mesh &m):
-	DataFile::ObjectLoader<Mesh>(m)
+
+Mesh::Loader::Loader(Mesh &m, bool g):
+	DataFile::ObjectLoader<Mesh>(m),
+	allow_gl_calls(g)
 {
-	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);
+	if(allow_gl_calls)
+	{
+		obj.check_buffers(VERTEX_BUFFER);
+		obj.vtx_setup.refresh();
+	}
 }
 
 void Mesh::Loader::batch(PrimitiveType p)
@@ -128,5 +242,75 @@ 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();
+}
+
+
+Mesh::AsyncLoader::AsyncLoader(Mesh &m, IO::Seekable &i):
+	mesh(m),
+	io(i),
+	vertex_updater(0),
+	index_updater(0),
+	phase(0)
+{
+	mesh.disallow_rendering = true;
+	mesh.check_buffers(VERTEX_BUFFER|INDEX_BUFFER);
+}
+
+Mesh::AsyncLoader::~AsyncLoader()
+{
+	mesh.disallow_rendering = false;
+	delete vertex_updater;
+	delete index_updater;
+}
+
+bool Mesh::AsyncLoader::needs_sync() const
+{
+	return phase%2;
+}
+
+bool Mesh::AsyncLoader::process()
+{
+	if(phase==0)
+	{
+		// TODO use correct filename
+		DataFile::Parser parser(io, "async");
+		Loader loader(mesh, false);
+		loader.load(parser);
+	}
+	else if(phase==1)
+	{
+		mesh.resize_buffers();
+		mesh.vtx_setup.refresh();
+		vertex_updater = mesh.vertices.refresh_async();
+		if(!mesh.batches.empty())
+			index_updater = mesh.batches.front().refresh_async();
+	}
+	else if(phase==2)
+	{
+		if(vertex_updater)
+			vertex_updater->upload_data();
+		if(index_updater)
+			index_updater->upload_data();
+	}
+	else if(phase==3)
+	{
+		delete vertex_updater;
+		vertex_updater = 0;
+		delete index_updater;
+		index_updater = 0;
+	}
+
+	++phase;
+	if(phase==1 && !mesh.vbuf && !mesh.ibuf)
+		phase += 3;
+	return phase>3;
+}
+
 } // namespace GL
 } // namespace Msp