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| |
| #ifndef QSGGEOMETRY_H |
| #define QSGGEOMETRY_H |
| |
| #include <QtQuick/qtquickglobal.h> |
| #include <QtGui/qopengl.h> |
| #include <QtCore/QRectF> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QSGGeometryData; |
| |
| class Q_QUICK_EXPORT QSGGeometry |
| { |
| public: |
| enum AttributeType { |
| UnknownAttribute, |
| PositionAttribute, |
| ColorAttribute, |
| TexCoordAttribute, |
| TexCoord1Attribute, |
| TexCoord2Attribute |
| }; |
| |
| enum DataPattern { |
| AlwaysUploadPattern = 0, |
| StreamPattern = 1, |
| DynamicPattern = 2, |
| StaticPattern = 3 |
| }; |
| |
| // Equivalents to GL_* drawing modes. |
| // Keep in sync with GL headers. |
| enum DrawingMode { |
| DrawPoints = 0x0000, |
| DrawLines = 0x0001, |
| DrawLineLoop = 0x0002, |
| DrawLineStrip = 0x0003, |
| DrawTriangles = 0x0004, |
| DrawTriangleStrip = 0x0005, |
| DrawTriangleFan = 0x0006 |
| }; |
| |
| // Equivalents to GL_BYTE and similar type constants. |
| // Keep in sync with GL headers. |
| enum Type { |
| ByteType = 0x1400, |
| UnsignedByteType = 0x1401, |
| ShortType = 0x1402, |
| UnsignedShortType = 0x1403, |
| IntType = 0x1404, |
| UnsignedIntType = 0x1405, |
| FloatType = 0x1406, |
| Bytes2Type = 0x1407, |
| Bytes3Type = 0x1408, |
| Bytes4Type = 0x1409, |
| DoubleType = 0x140A |
| }; |
| |
| struct Q_QUICK_EXPORT Attribute |
| { |
| int position; |
| int tupleSize; |
| int type; |
| |
| uint isVertexCoordinate : 1; |
| |
| AttributeType attributeType : 4; |
| |
| uint reserved : 27; |
| |
| static Attribute create(int pos, int tupleSize, int primitiveType, bool isPosition = false); |
| static Attribute createWithAttributeType(int pos, int tupleSize, int primitiveType, AttributeType attributeType); |
| }; |
| |
| struct AttributeSet { |
| int count; |
| int stride; |
| const Attribute *attributes; |
| }; |
| |
| struct Point2D { |
| float x, y; |
| void set(float nx, float ny) { |
| x = nx; y = ny; |
| } |
| }; |
| struct TexturedPoint2D { |
| float x, y; |
| float tx, ty; |
| void set(float nx, float ny, float ntx, float nty) { |
| x = nx; y = ny; tx = ntx; ty = nty; |
| } |
| }; |
| struct ColoredPoint2D { |
| float x, y; |
| unsigned char r, g, b, a; |
| void set(float nx, float ny, uchar nr, uchar ng, uchar nb, uchar na) { |
| x = nx; y = ny; |
| r = nr; g = ng, b = nb; a = na; |
| } |
| }; |
| |
| 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 = UnsignedShortType); |
| virtual ~QSGGeometry(); |
| |
| // must use unsigned int to be compatible with the old GLenum to keep BC |
| void setDrawingMode(unsigned int mode); |
| inline unsigned int 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(); |
| |
| inline int sizeOfIndex() const; |
| |
| 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 sizeOfVertex() const { return m_attributes.stride; } |
| |
| static void updateRectGeometry(QSGGeometry *g, const QRectF &rect); |
| static void updateTexturedRectGeometry(QSGGeometry *g, const QRectF &rect, const QRectF &sourceRect); |
| static void updateColoredRectGeometry(QSGGeometry *g, const QRectF &rect); |
| |
| void setIndexDataPattern(DataPattern p); |
| DataPattern indexDataPattern() const { return DataPattern(m_index_usage_pattern); } |
| |
| void setVertexDataPattern(DataPattern p); |
| DataPattern vertexDataPattern() const { return DataPattern(m_vertex_usage_pattern); } |
| |
| void markIndexDataDirty(); |
| void markVertexDataDirty(); |
| |
| float lineWidth() const; |
| void setLineWidth(float w); |
| |
| private: |
| friend class QSGGeometryData; |
| |
| 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; |
| |
| QSGGeometryData *m_server_data; |
| |
| uint m_owns_data : 1; |
| uint m_index_usage_pattern : 2; |
| uint m_vertex_usage_pattern : 2; |
| uint m_dirty_index_data : 1; |
| uint m_dirty_vertex_data : 1; |
| uint m_reserved_bits : 25; |
| |
| float m_prealloc[16]; |
| |
| float m_line_width; |
| }; |
| |
| inline uint *QSGGeometry::indexDataAsUInt() |
| { |
| Q_ASSERT(m_index_type == UnsignedIntType); |
| return static_cast<uint *>(indexData()); |
| } |
| |
| inline quint16 *QSGGeometry::indexDataAsUShort() |
| { |
| Q_ASSERT(m_index_type == UnsignedShortType); |
| return static_cast<quint16 *>(indexData()); |
| } |
| |
| inline const uint *QSGGeometry::indexDataAsUInt() const |
| { |
| Q_ASSERT(m_index_type == UnsignedIntType); |
| return static_cast<const uint *>(indexData()); |
| } |
| |
| inline const quint16 *QSGGeometry::indexDataAsUShort() const |
| { |
| Q_ASSERT(m_index_type == UnsignedShortType); |
| return static_cast<const 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 == FloatType); |
| Q_ASSERT(m_attributes.attributes[0].position == 0); |
| return static_cast<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 == FloatType); |
| Q_ASSERT(m_attributes.attributes[1].position == 1); |
| Q_ASSERT(m_attributes.attributes[1].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[1].type == FloatType); |
| return static_cast<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 == FloatType); |
| Q_ASSERT(m_attributes.attributes[1].position == 1); |
| Q_ASSERT(m_attributes.attributes[1].tupleSize == 4); |
| Q_ASSERT(m_attributes.attributes[1].type == UnsignedByteType); |
| return static_cast<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 == FloatType); |
| Q_ASSERT(m_attributes.attributes[0].position == 0); |
| return static_cast<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 == FloatType); |
| Q_ASSERT(m_attributes.attributes[1].position == 1); |
| Q_ASSERT(m_attributes.attributes[1].tupleSize == 2); |
| Q_ASSERT(m_attributes.attributes[1].type == FloatType); |
| return static_cast<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 == FloatType); |
| Q_ASSERT(m_attributes.attributes[1].position == 1); |
| Q_ASSERT(m_attributes.attributes[1].tupleSize == 4); |
| Q_ASSERT(m_attributes.attributes[1].type == UnsignedByteType); |
| return static_cast<const ColoredPoint2D *>(m_data); |
| } |
| |
| int QSGGeometry::sizeOfIndex() const |
| { |
| if (m_index_type == UnsignedShortType) return 2; |
| else if (m_index_type == UnsignedByteType) return 1; |
| else if (m_index_type == UnsignedIntType) return 4; |
| return 0; |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif // QSGGEOMETRY_H |