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/*************************************************************************
* Copyright (C) 2008 Tavian Barnes <tavianator@gmail.com> *
* *
* This file is part of The Dimension Library. *
* *
* The Dimension Library is free software; you can redistribute it and/ *
* or modify it under the terms of the GNU Lesser General Public License *
* as published by the Free Software Foundation; either version 3 of the *
* License, or (at your option) any later version. *
* *
* The Dimension Library 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with this program. If not, see *
* <http://www.gnu.org/licenses/>. *
*************************************************************************/
/*
* Draw a canvas to a GL framebuffer with glDrawPixels, or read one with
* glReadPixels. Should be fast, so no _async() versions.
*/
#ifndef DIMENSION_GL_H
#define DIMENSION_GL_H
/* Optimize canvas for GL drawing */
int dmnsn_gl_optimize_canvas(dmnsn_canvas *canvas);
/* Write canvas to GL framebuffer. Returns 0 on success, nonzero on failure. */
int dmnsn_gl_write_canvas(const dmnsn_canvas *canvas);
/* Read a canvas from a GL framebuffer. Returns NULL on failure. */
dmnsn_canvas *dmnsn_gl_read_canvas(unsigned int x0, unsigned int y0,
unsigned int width, unsigned int height);
#endif /* DIMENSION_GL_H */
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