git-svn-id: svn://db.shs.com.ru/libs@637 a8b55f48-bf90-11e4-a774-851b48703e85

qglengine/core/glbuffer.h

@@ -0,0 +1,56 @@
+/*
+	QGLView
+	Copyright (C) 2019  Ivan Pelipenko peri4ko@yandex.ru
+
+	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/>.
+*/
+
+#ifndef GLBUFFER_H
+#define GLBUFFER_H
+
+#include "gltypes.h"
+
+
+class Buffer
+{
+	friend class ObjectBase;
+public:
+	Buffer(GLenum target, GLenum usage = GL_DYNAMIC_DRAW);
+	~Buffer();
+
+	void init    (QOpenGLExtraFunctions * f);
+	void destroy (QOpenGLExtraFunctions * f);
+
+	void bind    (QOpenGLExtraFunctions * f);
+	void release (QOpenGLExtraFunctions * f);
+	void * map   (QOpenGLExtraFunctions * f, GLbitfield mode, int size = -1);
+	void unmap   (QOpenGLExtraFunctions * f);
+
+	// returns true if size changed
+	bool resize  (QOpenGLExtraFunctions * f, int new_size);
+	void load    (QOpenGLExtraFunctions * f, const void * data, int size, int offset = 0);
+
+	GLuint ID() const {return buffer_;}
+	GLenum usage() const {return usage_;}
+	bool isInit() const {return buffer_ != 0;}
+
+private:
+	GLenum target_, usage_;
+	GLuint buffer_;
+	int prev_size;
+
+};
+
+
+#endif // GLBUFFER_H