File indexing completed on 2024-05-19 05:32:22

 /*
     KWin - the KDE window manager
     This file is part of the KDE project.
 
     SPDX-FileCopyrightText: 2006 Lubos Lunak <l.lunak@kde.org>
     SPDX-FileCopyrightText: 2009, 2010, 2011 Martin Gräßlin <mgraesslin@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include "platformsupport/scenes/opengl/openglbackend.h"
 
 #include "scene/decorationitem.h"
 #include "scene/shadowitem.h"
 #include "scene/workspacescene.h"
 
 #include "opengl/glutils.h"
 
 namespace KWin
 {
 class OpenGLBackend;
 
 class KWIN_EXPORT WorkspaceSceneOpenGL : public WorkspaceScene
 {
     Q_OBJECT
 
 public:
     explicit WorkspaceSceneOpenGL(OpenGLBackend *backend);
     ~WorkspaceSceneOpenGL() override;
 
     bool makeOpenGLContextCurrent() override;
     void doneOpenGLContextCurrent() override;
     bool supportsNativeFence() const override;
     std::unique_ptr<DecorationRenderer> createDecorationRenderer(Decoration::DecoratedClientImpl *impl) override;
     std::unique_ptr<ShadowTextureProvider> createShadowTextureProvider(Shadow *shadow) override;
     bool animationsSupported() const override;
 
     OpenGLBackend *backend() const
     {
         return m_backend;
     }
 
     std::pair<std::shared_ptr<GLTexture>, ColorDescription> textureForOutput(Output *output) const override;
 
 private:
     OpenGLBackend *m_backend;
     GLuint vao = 0;
 };
 
 /**
  * @short OpenGL implementation of Shadow.
  *
  * This class extends Shadow by the Elements required for OpenGL rendering.
  * @author Martin Gräßlin <mgraesslin@kde.org>
  */
 class OpenGLShadowTextureProvider : public ShadowTextureProvider
 {
 public:
     explicit OpenGLShadowTextureProvider(Shadow *shadow);
     ~OpenGLShadowTextureProvider() override;
 
     GLTexture *shadowTexture()
     {
         return m_texture.get();
     }
 
     void update() override;
 
 private:
     std::shared_ptr<GLTexture> m_texture;
 };
 
 class SceneOpenGLDecorationRenderer : public DecorationRenderer
 {
     Q_OBJECT
 public:
     enum class DecorationPart : int {
         Left,
         Top,
         Right,
         Bottom,
         Count
     };
     explicit SceneOpenGLDecorationRenderer(Decoration::DecoratedClientImpl *client);
     ~SceneOpenGLDecorationRenderer() override;
 
     void render(const QRegion &region) override;
 
     GLTexture *texture()
     {
         return m_texture.get();
     }
     GLTexture *texture() const
     {
         return m_texture.get();
     }
 
 private:
     void renderPart(const QRect &rect, const QRect &partRect, const QPoint &textureOffset, qreal devicePixelRatio, bool rotated = false);
     static const QMargins texturePadForPart(const QRect &rect, const QRect &partRect);
     void resizeTexture();
     int toNativeSize(int size) const;
     std::unique_ptr<GLTexture> m_texture;
 };
 
 } // namespace