d78fda30ef
Summary: Currently KWin::GLTexture is a nice wrapper for creating a GL texture and performing various operations including rendering. In a pending patch I want to render the FBO from a QQuickScene directly, where we have an underlying texture already, but it makes sense to re-use this class for the rendering. A similar need is in haagch's kwin VR patchset. This patch adds a constructor to GLTexture that takes an externally managed texture and provides the relevant useful KWin features. Test Plan: Used in patch series Reviewers: #kwin, zzag Reviewed By: #kwin, zzag Subscribers: zzag, kwin Tags: #kwin Differential Revision: https://phabricator.kde.org/D24206
92 lines
2.5 KiB
C++
92 lines
2.5 KiB
C++
/********************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2006-2007 Rivo Laks <rivolaks@hot.ee>
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Copyright (C) 2010, 2011 Martin Gräßlin <mgraesslin@kde.org>
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Copyright (C) 2011 Philipp Knechtges <philipp-dev@knechtges.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#ifndef KWIN_GLTEXTURE_P_H
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#define KWIN_GLTEXTURE_P_H
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#include "kwinconfig.h" // KWIN_HAVE_OPENGL
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#include "kwinglutils.h"
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#include <kwinglutils_export.h>
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#include <QSize>
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#include <QSharedData>
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#include <QImage>
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#include <QMatrix4x4>
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#include <epoxy/gl.h>
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namespace KWin
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{
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// forward declarations
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class GLVertexBuffer;
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class KWINGLUTILS_EXPORT GLTexturePrivate
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: public QSharedData
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{
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public:
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GLTexturePrivate();
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virtual ~GLTexturePrivate();
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virtual void onDamage();
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void updateMatrix();
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GLuint m_texture;
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GLenum m_target;
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GLenum m_internalFormat;
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GLenum m_filter;
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GLenum m_wrapMode;
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QSize m_size;
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QSizeF m_scale; // to un-normalize GL_TEXTURE_2D
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QMatrix4x4 m_matrix[2];
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bool m_yInverted; // texture is y-inverted
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bool m_canUseMipmaps;
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bool m_markedDirty;
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bool m_filterChanged;
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bool m_wrapModeChanged;
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bool m_immutable;
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bool m_foreign;
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int m_mipLevels;
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int m_unnormalizeActive; // 0 - no, otherwise refcount
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int m_normalizeActive; // 0 - no, otherwise refcount
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GLVertexBuffer* m_vbo;
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QSize m_cachedSize;
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static void initStatic();
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static bool s_supportsFramebufferObjects;
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static bool s_supportsARGB32;
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static bool s_supportsUnpack;
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static bool s_supportsTextureStorage;
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static bool s_supportsTextureSwizzle;
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static bool s_supportsTextureFormatRG;
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static GLuint s_fbo;
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static uint s_textureObjectCounter;
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private:
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friend void KWin::cleanupGL();
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static void cleanup();
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Q_DISABLE_COPY(GLTexturePrivate)
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};
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} // namespace
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#endif
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