| /**************************************************************************** |
| ** |
| ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). |
| ** All rights reserved. |
| ** Contact: Nokia Corporation (qt-info@nokia.com) |
| ** |
| ** This file is part of the QML Shaders plugin 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 QSGGEOMETRY_H |
| #define QSGGEOMETRY_H |
| |
| #include <QtOpenGL/qgl.h> |
| |
| QT_BEGIN_HEADER |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QSGGeometry |
| { |
| public: |
| struct Attribute |
| { |
| int position; |
| int tupleSize; |
| int type; |
| }; |
| |
| struct AttributeSet { |
| int count; |
| int stride; |
| const Attribute *attributes; |
| }; |
| |
| struct Point2D { float x, y; }; |
| struct TexturedPoint2D { float x, y; float tx, ty; }; |
| struct ColoredPoint2D { float x, y; unsigned char r, g, b, a; }; |
| |
| static const AttributeSet &defaultAttributes_Point2D(); |
| static const AttributeSet &defaultAttributes_TexturedPoint2D(); |
| static const AttributeSet &defaultAttributes_ColoredPoint2D(); |
| |
| QSGGeometry(const QSGGeometry::AttributeSet &attribs, |
| int vertexCount, |
| int indexCount = 0, |
| int indexType = GL_UNSIGNED_SHORT); |
| ~QSGGeometry(); |
| |
| void setDrawingMode(GLenum mode); |
| inline GLenum drawingMode() const { return m_drawing_mode; } |
| |
| void allocate(int vertexCount, int indexCount = 0); |
| |
| int vertexCount() const { return m_vertex_count; } |
| |
| void *vertexData() { return m_data; } |
| inline Point2D *vertexDataAsPoint2D(); |
| inline TexturedPoint2D *vertexDataAsTexturedPoint2D(); |
| inline ColoredPoint2D *vertexDataAsColoredPoint2D(); |
| |
| inline const void *vertexData() const { return m_data; } |
| inline const Point2D *vertexDataAsPoint2D() const; |
| inline const TexturedPoint2D *vertexDataAsTexturedPoint2D() const; |
| inline const ColoredPoint2D *vertexDataAsColoredPoint2D() const; |
| |
| inline int indexType() const { return m_index_type; } |
| |
| int indexCount() const { return m_index_count; } |
| |
| void *indexData(); |
| inline uint *indexDataAsUInt(); |
| inline quint16 *indexDataAsUShort(); |
| |
| const void *indexData() const; |
| inline const uint *indexDataAsUInt() const; |
| inline const quint16 *indexDataAsUShort() const; |
| |
| inline int attributeCount() const { return m_attributes.count; } |
| inline const Attribute *attributes() const { return m_attributes.attributes; } |
| inline int stride() const { return m_attributes.stride; } |
| |
| static void updateRectGeometry(QSGGeometry *g, const QRectF &rect); |
| static void updateTexturedRectGeometry(QSGGeometry *g, const QRectF &rect, const QRectF &sourceRect); |
| |
| private: |
| int m_drawing_mode; |
| int m_vertex_count; |
| int m_index_count; |
| int m_index_type; |
| const AttributeSet &m_attributes; |
| void *m_data; |
| int m_index_data_offset; |
| |
| void *m_reserved_pointer; |
| |
| uint m_owns_data : 1; |
| uint m_reserved_bits : 31; |
| |
| float m_prealloc[16]; |
| }; |
| |
| inline uint *QSGGeometry::indexDataAsUInt() |
| { |
| Q_ASSERT(m_index_type == GL_UNSIGNED_INT); |
| return (uint *) indexData(); |
| } |
| |
| inline quint16 *QSGGeometry::indexDataAsUShort() |
| { |
| Q_ASSERT(m_index_type == GL_UNSIGNED_SHORT); |
| return (quint16 *) indexData(); |
| } |
| |
| inline const uint *QSGGeometry::indexDataAsUInt() const |
| { |
| Q_ASSERT(m_index_type == GL_UNSIGNED_INT); |
| return (uint *) indexData(); |
| } |
| |
| inline const quint16 *QSGGeometry::indexDataAsUShort() const |
| { |
| Q_ASSERT(m_index_type == GL_UNSIGNED_SHORT); |
| return (quint16 *) indexData(); |
| } |
| |
| inline QSGGeometry::Point2D *QSGGeometry::vertexDataAsPoint2D() |
| { |
| Q_ASSERT(m_attributes.count == 1); |
| Q_ASSERT(m_attributes.stride == 2 * sizeof(float)); |
| Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); |
| Q_ASSERT(m_attributes.attributes[0].position == 0); |
| return (Point2D *) m_data; |
| } |
| |
| inline QSGGeometry::TexturedPoint2D *QSGGeometry::vertexDataAsTexturedPoint2D() |
| { |
| Q_ASSERT(m_attributes.count == 2); |
| Q_ASSERT(m_attributes.stride == 4 * sizeof(float)); |
| Q_ASSERT(m_attributes.attributes[0].position == 0); |
| Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); |
| Q_ASSERT(m_attributes.attributes[1].position == 1); |
| Q_ASSERT(m_attributes.attributes[1].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[1].type == GL_FLOAT); |
| return (TexturedPoint2D *) m_data; |
| } |
| |
| inline QSGGeometry::ColoredPoint2D *QSGGeometry::vertexDataAsColoredPoint2D() |
| { |
| Q_ASSERT(m_attributes.count == 2); |
| Q_ASSERT(m_attributes.stride == 2 * sizeof(float) + 4 * sizeof(char)); |
| Q_ASSERT(m_attributes.attributes[0].position == 0); |
| Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); |
| Q_ASSERT(m_attributes.attributes[1].position == 1); |
| Q_ASSERT(m_attributes.attributes[1].tupleSize == 4); |
| Q_ASSERT(m_attributes.attributes[1].type == GL_UNSIGNED_BYTE); |
| return (ColoredPoint2D *) m_data; |
| } |
| |
| inline const QSGGeometry::Point2D *QSGGeometry::vertexDataAsPoint2D() const |
| { |
| Q_ASSERT(m_attributes.count == 1); |
| Q_ASSERT(m_attributes.stride == 2 * sizeof(float)); |
| Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); |
| Q_ASSERT(m_attributes.attributes[0].position == 0); |
| return (const Point2D *) m_data; |
| } |
| |
| inline const QSGGeometry::TexturedPoint2D *QSGGeometry::vertexDataAsTexturedPoint2D() const |
| { |
| Q_ASSERT(m_attributes.count == 2); |
| Q_ASSERT(m_attributes.stride == 4 * sizeof(float)); |
| Q_ASSERT(m_attributes.attributes[0].position == 0); |
| Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); |
| Q_ASSERT(m_attributes.attributes[1].position == 1); |
| Q_ASSERT(m_attributes.attributes[1].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[1].type == GL_FLOAT); |
| return (const TexturedPoint2D *) m_data; |
| } |
| |
| inline const QSGGeometry::ColoredPoint2D *QSGGeometry::vertexDataAsColoredPoint2D() const |
| { |
| Q_ASSERT(m_attributes.count == 2); |
| Q_ASSERT(m_attributes.stride == 2 * sizeof(float) + 4 * sizeof(char)); |
| Q_ASSERT(m_attributes.attributes[0].position == 0); |
| Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT); |
| Q_ASSERT(m_attributes.attributes[1].position == 1); |
| Q_ASSERT(m_attributes.attributes[1].tupleSize == 4); |
| Q_ASSERT(m_attributes.attributes[1].type == GL_UNSIGNED_BYTE); |
| return (const ColoredPoint2D *) m_data; |
| } |
| |
| QT_END_NAMESPACE |
| |
| QT_END_HEADER |
| |
| #endif // QSGGEOMETRY_H |