src/gl/compiler.h

/*
 *  LDForge: LDraw parts authoring CAD
 *  Copyright (C) 2013 - 2018 Teemu Piippo
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#pragma once
#include "main.h"
#include "gl/partrenderer.h"
#include "gl/common.h"
#include "types/boundingbox.h"
#include <QMap>
#include <QSet>

namespace gl
{
	class Compiler;
	class Renderer;
}

/*
 * Compiles LDObjects into polygons for the GLRenderer to draw.
 */
class gl::Compiler : public QObject, protected QOpenGLFunctions
{
	Q_OBJECT
public:
	Compiler(Renderer* renderer);
	~Compiler();
	void initialize();
	Point3D modelCenter();
	void prepareVBO (int vbonum);
	GLuint vbo (int vbonum) const;
	int vboSize (int vbonum) const;
	static int vboNumber (VboClass surface, VboSubclass complement);
private:
	struct ObjectVboData
	{
		QVector<GLfloat> data[gl::numVbos];
	};
	QMap<QPersistentModelIndex, ObjectVboData> m_objectInfo;
	QSet<QPersistentModelIndex> m_staged; // Objects that need to be compiled
	GLuint m_vbo[gl::numVbos];
	bool m_vboChanged[gl::numVbos] = {true};
	bool needBoundingBoxRebuild = true;
	int m_vboSizes[gl::numVbos] = {0};
};

#define CHECK_GL_ERROR() { checkGLError(__FILE__, __LINE__); }
void checkGLError (QString file, int line);