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Diffstat (limited to 'src/quick/scenegraph/coreapi/qsgrenderer_p.h')
-rw-r--r-- | src/quick/scenegraph/coreapi/qsgrenderer_p.h | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/src/quick/scenegraph/coreapi/qsgrenderer_p.h b/src/quick/scenegraph/coreapi/qsgrenderer_p.h new file mode 100644 index 0000000000..e5667c710a --- /dev/null +++ b/src/quick/scenegraph/coreapi/qsgrenderer_p.h @@ -0,0 +1,232 @@ +/**************************************************************************** +** +** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtDeclarative module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef RENDERER_H +#define RENDERER_H + +#include <qset.h> +#include <qhash.h> + +#include <qcolor.h> +#include <qopenglfunctions.h> +#include <qopenglshaderprogram.h> + +#include "qsgnode.h" +#include "qsgmaterial.h" +#include <QtQuick/qsgtexture.h> + +#include <QtQuick/private/qsgcontext_p.h> + +QT_BEGIN_HEADER + +QT_BEGIN_NAMESPACE + +class QSGMaterialShader; +struct QSGMaterialType; +class QOpenGLFramebufferObject; +class TextureReference; +class QSGBindable; +class QSGNodeUpdater; + +class Q_QUICK_EXPORT QSGRenderer : public QObject, public QOpenGLFunctions +{ + Q_OBJECT +public: + enum ClipType + { + NoClip, + ScissorClip, + StencilClip + }; + + enum ClearModeBit + { + ClearColorBuffer = 0x0001, + ClearDepthBuffer = 0x0002, + ClearStencilBuffer = 0x0004 + }; + Q_DECLARE_FLAGS(ClearMode, ClearModeBit) + + QSGRenderer(QSGContext *context); + virtual ~QSGRenderer(); + + void setRootNode(QSGRootNode *node); + QSGRootNode *rootNode() const { return m_root_node; } + + void setDeviceRect(const QRect &rect) { m_device_rect = rect; } + inline void setDeviceRect(const QSize &size) { setDeviceRect(QRect(QPoint(), size)); } + QRect deviceRect() const { return m_device_rect; } + + void setViewportRect(const QRect &rect) { m_viewport_rect = rect; } + inline void setViewportRect(const QSize &size) { setViewportRect(QRect(QPoint(), size)); } + QRect viewportRect() const { return m_viewport_rect; } + + // Accessed by QSGMaterialShader::RenderState. + QMatrix4x4 currentProjectionMatrix() const { return m_current_projection_matrix; } + QMatrix4x4 currentModelViewMatrix() const { return m_current_model_view_matrix; } + QMatrix4x4 currentCombinedMatrix() const { return m_current_projection_matrix * m_current_model_view_matrix; } + qreal currentOpacity() const { return m_current_opacity; } + + void setProjectionMatrixToDeviceRect(); + void setProjectionMatrixToRect(const QRectF &rect); + void setProjectionMatrix(const QMatrix4x4 &matrix); + QMatrix4x4 projectionMatrix() const { return m_projection_matrix; } + bool isMirrored() const { return m_mirrored; } + + void setClearColor(const QColor &color); + QColor clearColor() const { return m_clear_color; } + + QOpenGLContext *glContext() const { Q_ASSERT(m_context); return m_context->glContext(); } + + QSGContext *context(); + + void renderScene(); + void renderScene(const QSGBindable &bindable); + virtual void nodeChanged(QSGNode *node, QSGNode::DirtyFlags flags); + virtual void materialChanged(QSGGeometryNode *node, QSGMaterial *from, QSGMaterial *to); + + QSGNodeUpdater *nodeUpdater() const; + void setNodeUpdater(QSGNodeUpdater *updater); + + inline QSGMaterialShader::RenderState state(QSGMaterialShader::RenderState::DirtyStates dirty) const; + + void setClearMode(ClearMode mode) { m_clear_mode = mode; } + ClearMode clearMode() const { return m_clear_mode; } + +signals: + void sceneGraphChanged(); // Add, remove, ChangeFlags changes... + +protected: + void draw(const QSGMaterialShader *material, const QSGGeometry *g); + + virtual void render() = 0; + QSGRenderer::ClipType updateStencilClip(const QSGClipNode *clip); + + const QSGBindable *bindable() const { return m_bindable; } + + virtual void preprocess(); + + void addNodesToPreprocess(QSGNode *node); + void removeNodesToPreprocess(QSGNode *node); + + + QColor m_clear_color; + ClearMode m_clear_mode; + QMatrix4x4 m_current_projection_matrix; + QMatrix4x4 m_current_model_view_matrix; + qreal m_current_opacity; + + QSGContext *m_context; + +private: + QSGRootNode *m_root_node; + QSGNodeUpdater *m_node_updater; + + QRect m_device_rect; + QRect m_viewport_rect; + + QSet<QSGNode *> m_nodes_to_preprocess; + + QMatrix4x4 m_projection_matrix; + QOpenGLShaderProgram m_clip_program; + int m_clip_matrix_id; + + const QSGBindable *m_bindable; + + uint m_changed_emitted : 1; + uint m_mirrored : 1; + uint m_is_rendering : 1; + + uint m_vertex_buffer_bound : 1; + uint m_index_buffer_bound : 1; +}; + +Q_DECLARE_OPERATORS_FOR_FLAGS(QSGRenderer::ClearMode) + +class Q_QUICK_EXPORT QSGBindable +{ +public: + virtual ~QSGBindable() { } + virtual void bind() const = 0; + virtual void clear(QSGRenderer::ClearMode mode) const; + virtual void reactivate() const; +}; + +class QSGBindableFbo : public QSGBindable +{ +public: + QSGBindableFbo(QOpenGLFramebufferObject *fbo); + virtual void bind() const; +private: + QOpenGLFramebufferObject *m_fbo; +}; + + + +QSGMaterialShader::RenderState QSGRenderer::state(QSGMaterialShader::RenderState::DirtyStates dirty) const +{ + QSGMaterialShader::RenderState s; + s.m_dirty = dirty; + s.m_data = this; + return s; +} + + +class Q_QUICK_EXPORT QSGNodeDumper : public QSGNodeVisitor { + +public: + static void dump(QSGNode *n); + + QSGNodeDumper() : m_indent(0) {} + void visitNode(QSGNode *n); + void visitChildren(QSGNode *n); + +private: + int m_indent; +}; + + + +QT_END_NAMESPACE + +QT_END_HEADER + +#endif // RENDERER_H |