mirror of
https://github.com/Gator96100/ProxSpace.git
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288 lines
9.5 KiB
C++
288 lines
9.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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**
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** This file is part of the Qt scene graph research project.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see http://www.qt.io/terms-conditions. For further
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** information use the contact form at http://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** As a special exception, The Qt Company gives you certain additional
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** rights. These rights are described in The Qt Company LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QSGGEOMETRY_H
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#define QSGGEOMETRY_H
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#include <QtQuick/qtquickglobal.h>
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#include <QtGui/qopengl.h>
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#include <QtCore/QRectF>
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QT_BEGIN_NAMESPACE
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class QSGGeometryData;
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class Q_QUICK_EXPORT QSGGeometry
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{
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public:
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struct Q_QUICK_EXPORT Attribute
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{
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int position;
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int tupleSize;
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int type;
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uint isVertexCoordinate : 1;
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uint reserved : 31;
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static Attribute create(int pos, int tupleSize, int primitiveType, bool isPosition = false);
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};
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struct AttributeSet {
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int count;
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int stride;
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const Attribute *attributes;
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};
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struct Point2D {
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float x, y;
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void set(float nx, float ny) {
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x = nx; y = ny;
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}
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};
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struct TexturedPoint2D {
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float x, y;
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float tx, ty;
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void set(float nx, float ny, float ntx, float nty) {
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x = nx; y = ny; tx = ntx; ty = nty;
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}
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};
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struct ColoredPoint2D {
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float x, y;
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unsigned char r, g, b, a;
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void set(float nx, float ny, uchar nr, uchar ng, uchar nb, uchar na) {
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x = nx; y = ny;
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r = nr; g = ng, b = nb; a = na;
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}
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};
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static const AttributeSet &defaultAttributes_Point2D();
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static const AttributeSet &defaultAttributes_TexturedPoint2D();
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static const AttributeSet &defaultAttributes_ColoredPoint2D();
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enum DataPattern {
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AlwaysUploadPattern = 0,
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StreamPattern = 1,
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DynamicPattern = 2,
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StaticPattern = 3
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};
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QSGGeometry(const QSGGeometry::AttributeSet &attribs,
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int vertexCount,
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int indexCount = 0,
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int indexType = GL_UNSIGNED_SHORT);
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virtual ~QSGGeometry();
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void setDrawingMode(GLenum mode);
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inline GLenum drawingMode() const { return m_drawing_mode; }
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void allocate(int vertexCount, int indexCount = 0);
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int vertexCount() const { return m_vertex_count; }
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void *vertexData() { return m_data; }
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inline Point2D *vertexDataAsPoint2D();
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inline TexturedPoint2D *vertexDataAsTexturedPoint2D();
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inline ColoredPoint2D *vertexDataAsColoredPoint2D();
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inline const void *vertexData() const { return m_data; }
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inline const Point2D *vertexDataAsPoint2D() const;
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inline const TexturedPoint2D *vertexDataAsTexturedPoint2D() const;
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inline const ColoredPoint2D *vertexDataAsColoredPoint2D() const;
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inline int indexType() const { return m_index_type; }
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int indexCount() const { return m_index_count; }
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void *indexData();
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inline uint *indexDataAsUInt();
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inline quint16 *indexDataAsUShort();
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inline int sizeOfIndex() const;
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const void *indexData() const;
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inline const uint *indexDataAsUInt() const;
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inline const quint16 *indexDataAsUShort() const;
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inline int attributeCount() const { return m_attributes.count; }
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inline const Attribute *attributes() const { return m_attributes.attributes; }
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inline int sizeOfVertex() const { return m_attributes.stride; }
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static void updateRectGeometry(QSGGeometry *g, const QRectF &rect);
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static void updateTexturedRectGeometry(QSGGeometry *g, const QRectF &rect, const QRectF &sourceRect);
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void setIndexDataPattern(DataPattern p);
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DataPattern indexDataPattern() const { return DataPattern(m_index_usage_pattern); }
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void setVertexDataPattern(DataPattern p);
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DataPattern vertexDataPattern() const { return DataPattern(m_vertex_usage_pattern); }
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void markIndexDataDirty();
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void markVertexDataDirty();
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float lineWidth() const;
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void setLineWidth(float w);
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private:
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friend class QSGGeometryData;
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int m_drawing_mode;
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int m_vertex_count;
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int m_index_count;
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int m_index_type;
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const AttributeSet &m_attributes;
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void *m_data;
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int m_index_data_offset;
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QSGGeometryData *m_server_data;
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uint m_owns_data : 1;
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uint m_index_usage_pattern : 2;
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uint m_vertex_usage_pattern : 2;
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uint m_dirty_index_data : 1;
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uint m_dirty_vertex_data : 1;
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uint m_reserved_bits : 25;
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float m_prealloc[16];
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float m_line_width;
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};
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inline uint *QSGGeometry::indexDataAsUInt()
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{
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Q_ASSERT(m_index_type == GL_UNSIGNED_INT);
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return static_cast<uint *>(indexData());
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}
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inline quint16 *QSGGeometry::indexDataAsUShort()
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{
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Q_ASSERT(m_index_type == GL_UNSIGNED_SHORT);
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return static_cast<quint16 *>(indexData());
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}
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inline const uint *QSGGeometry::indexDataAsUInt() const
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{
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Q_ASSERT(m_index_type == GL_UNSIGNED_INT);
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return static_cast<const uint *>(indexData());
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}
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inline const quint16 *QSGGeometry::indexDataAsUShort() const
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{
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Q_ASSERT(m_index_type == GL_UNSIGNED_SHORT);
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return static_cast<const quint16 *>(indexData());
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}
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inline QSGGeometry::Point2D *QSGGeometry::vertexDataAsPoint2D()
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{
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Q_ASSERT(m_attributes.count == 1);
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Q_ASSERT(m_attributes.stride == 2 * sizeof(float));
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Q_ASSERT(m_attributes.attributes[0].tupleSize == 2);
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Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT);
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Q_ASSERT(m_attributes.attributes[0].position == 0);
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return static_cast<Point2D *>(m_data);
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}
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inline QSGGeometry::TexturedPoint2D *QSGGeometry::vertexDataAsTexturedPoint2D()
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{
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Q_ASSERT(m_attributes.count == 2);
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Q_ASSERT(m_attributes.stride == 4 * sizeof(float));
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Q_ASSERT(m_attributes.attributes[0].position == 0);
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Q_ASSERT(m_attributes.attributes[0].tupleSize == 2);
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Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT);
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Q_ASSERT(m_attributes.attributes[1].position == 1);
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Q_ASSERT(m_attributes.attributes[1].tupleSize == 2);
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Q_ASSERT(m_attributes.attributes[1].type == GL_FLOAT);
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return static_cast<TexturedPoint2D *>(m_data);
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}
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inline QSGGeometry::ColoredPoint2D *QSGGeometry::vertexDataAsColoredPoint2D()
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{
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Q_ASSERT(m_attributes.count == 2);
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Q_ASSERT(m_attributes.stride == 2 * sizeof(float) + 4 * sizeof(char));
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Q_ASSERT(m_attributes.attributes[0].position == 0);
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Q_ASSERT(m_attributes.attributes[0].tupleSize == 2);
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Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT);
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Q_ASSERT(m_attributes.attributes[1].position == 1);
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Q_ASSERT(m_attributes.attributes[1].tupleSize == 4);
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Q_ASSERT(m_attributes.attributes[1].type == GL_UNSIGNED_BYTE);
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return static_cast<ColoredPoint2D *>(m_data);
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}
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inline const QSGGeometry::Point2D *QSGGeometry::vertexDataAsPoint2D() const
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{
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Q_ASSERT(m_attributes.count == 1);
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Q_ASSERT(m_attributes.stride == 2 * sizeof(float));
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Q_ASSERT(m_attributes.attributes[0].tupleSize == 2);
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Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT);
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Q_ASSERT(m_attributes.attributes[0].position == 0);
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return static_cast<const Point2D *>(m_data);
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}
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inline const QSGGeometry::TexturedPoint2D *QSGGeometry::vertexDataAsTexturedPoint2D() const
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{
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Q_ASSERT(m_attributes.count == 2);
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Q_ASSERT(m_attributes.stride == 4 * sizeof(float));
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Q_ASSERT(m_attributes.attributes[0].position == 0);
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Q_ASSERT(m_attributes.attributes[0].tupleSize == 2);
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Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT);
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Q_ASSERT(m_attributes.attributes[1].position == 1);
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Q_ASSERT(m_attributes.attributes[1].tupleSize == 2);
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Q_ASSERT(m_attributes.attributes[1].type == GL_FLOAT);
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return static_cast<const TexturedPoint2D *>(m_data);
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}
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inline const QSGGeometry::ColoredPoint2D *QSGGeometry::vertexDataAsColoredPoint2D() const
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{
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Q_ASSERT(m_attributes.count == 2);
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Q_ASSERT(m_attributes.stride == 2 * sizeof(float) + 4 * sizeof(char));
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Q_ASSERT(m_attributes.attributes[0].position == 0);
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Q_ASSERT(m_attributes.attributes[0].tupleSize == 2);
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Q_ASSERT(m_attributes.attributes[0].type == GL_FLOAT);
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Q_ASSERT(m_attributes.attributes[1].position == 1);
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Q_ASSERT(m_attributes.attributes[1].tupleSize == 4);
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Q_ASSERT(m_attributes.attributes[1].type == GL_UNSIGNED_BYTE);
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return static_cast<const ColoredPoint2D *>(m_data);
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}
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int QSGGeometry::sizeOfIndex() const
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{
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if (m_index_type == GL_UNSIGNED_SHORT) return 2;
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else if (m_index_type == GL_UNSIGNED_BYTE) return 1;
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else if (m_index_type == GL_UNSIGNED_INT) return 4;
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return 0;
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}
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QT_END_NAMESPACE
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#endif // QSGGEOMETRY_H
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