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postprocessing.h
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postprocessing.h
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/** @file postprocessing.h World frame post processing.
*
* @authors Copyright (c) 2013 Jaakko Keränen <jaakko.keranen@iki.fi>
*
* @par License
* GPL: http://www.gnu.org/licenses/gpl.html
*
* <small>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 2 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</small>
*/
#ifndef DENG_CLIENT_FX_POSTPROCESSING_H
#define DENG_CLIENT_FX_POSTPROCESSING_H
#include "render/consoleeffect.h"
#include <de/Time>
namespace fx {
/**
* Post-processing of rendered camera lens frames. Maintains an offscreen
* render target and provides a way to draw it back to the regular target
* with shader effects applied.
*/
class PostProcessing : public ConsoleEffect
{
public:
PostProcessing(int console);
/**
* Determines whether the effect is active. If it isn't, it can be skipped
* altogether when post processing a frame.
*/
bool isActive() const;
/**
* Fades in, or immediately takes into use, a new post-processing shader.
* Only shaders in the "fx.post" namespace can be used.
*
* If a shader is already in use, it will simply be swapped immediately
* with the new shader rather than crossfaded.
*
* @param fxPostShader Name of the shader under "fx.post".
* @param span Duration of the fade in animation.
*/
void fadeInShader(de::String const &fxPostShader, de::TimeDelta const &span);
void fadeOut(de::TimeDelta const &span);
void glInit();
void glDeinit();
void beginFrame();
void draw();
void endFrame();
private:
DENG2_PRIVATE(d)
};
} // namespace fx
#endif // DENG_CLIENT_FX_POSTPROCESSING_H