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39 | |
40 | #ifndef QSGGEOMETRY_H |
41 | #define QSGGEOMETRY_H |
42 | |
43 | #include <QtQuick/qtquickglobal.h> |
44 | #include <QtGui/qopengl.h> |
45 | #include <QtCore/QRectF> |
46 | |
47 | QT_BEGIN_NAMESPACE |
48 | |
49 | class QSGGeometryData; |
50 | |
51 | class Q_QUICK_EXPORT QSGGeometry |
52 | { |
53 | public: |
54 | enum AttributeType { |
55 | UnknownAttribute, |
56 | PositionAttribute, |
57 | ColorAttribute, |
58 | TexCoordAttribute, |
59 | TexCoord1Attribute, |
60 | TexCoord2Attribute |
61 | }; |
62 | |
63 | enum DataPattern { |
64 | AlwaysUploadPattern = 0, |
65 | StreamPattern = 1, |
66 | DynamicPattern = 2, |
67 | StaticPattern = 3 |
68 | }; |
69 | |
70 | // Equivalents to GL_* drawing modes. |
71 | // Keep in sync with GL headers. |
72 | enum DrawingMode { |
73 | DrawPoints = 0x0000, |
74 | DrawLines = 0x0001, |
75 | DrawLineLoop = 0x0002, |
76 | DrawLineStrip = 0x0003, |
77 | DrawTriangles = 0x0004, |
78 | DrawTriangleStrip = 0x0005, |
79 | DrawTriangleFan = 0x0006 |
80 | }; |
81 | |
82 | // Equivalents to GL_BYTE and similar type constants. |
83 | // Keep in sync with GL headers. |
84 | enum Type { |
85 | ByteType = 0x1400, |
86 | UnsignedByteType = 0x1401, |
87 | ShortType = 0x1402, |
88 | UnsignedShortType = 0x1403, |
89 | IntType = 0x1404, |
90 | UnsignedIntType = 0x1405, |
91 | FloatType = 0x1406, |
92 | Bytes2Type = 0x1407, |
93 | Bytes3Type = 0x1408, |
94 | Bytes4Type = 0x1409, |
95 | DoubleType = 0x140A |
96 | }; |
97 | |
98 | struct Q_QUICK_EXPORT Attribute |
99 | { |
100 | int position; |
101 | int tupleSize; |
102 | int type; |
103 | |
104 | uint isVertexCoordinate : 1; |
105 | |
106 | AttributeType attributeType : 4; |
107 | |
108 | uint reserved : 27; |
109 | |
110 | static Attribute create(int pos, int tupleSize, int primitiveType, bool isPosition = false); |
111 | static Attribute createWithAttributeType(int pos, int tupleSize, int primitiveType, AttributeType attributeType); |
112 | }; |
113 | |
114 | struct AttributeSet { |
115 | int count; |
116 | int stride; |
117 | const Attribute *attributes; |
118 | }; |
119 | |
120 | struct Point2D { |
121 | float x, y; |
122 | void set(float nx, float ny) { |
123 | x = nx; y = ny; |
124 | } |
125 | }; |
126 | struct TexturedPoint2D { |
127 | float x, y; |
128 | float tx, ty; |
129 | void set(float nx, float ny, float ntx, float nty) { |
130 | x = nx; y = ny; tx = ntx; ty = nty; |
131 | } |
132 | }; |
133 | struct ColoredPoint2D { |
134 | float x, y; |
135 | unsigned char r, g, b, a; |
136 | void set(float nx, float ny, uchar nr, uchar ng, uchar nb, uchar na) { |
137 | x = nx; y = ny; |
138 | r = nr; g = ng, b = nb; a = na; |
139 | } |
140 | }; |
141 | |
142 | static const AttributeSet &defaultAttributes_Point2D(); |
143 | static const AttributeSet &defaultAttributes_TexturedPoint2D(); |
144 | static const AttributeSet &defaultAttributes_ColoredPoint2D(); |
145 | |
146 | QSGGeometry(const QSGGeometry::AttributeSet &attribs, |
147 | int vertexCount, |
148 | int indexCount = 0, |
149 | int indexType = UnsignedShortType); |
150 | virtual ~QSGGeometry(); |
151 | |
152 | // must use unsigned int to be compatible with the old GLenum to keep BC |
153 | void setDrawingMode(unsigned int mode); |
154 | inline unsigned int drawingMode() const { return m_drawing_mode; } |
155 | |
156 | void allocate(int vertexCount, int indexCount = 0); |
157 | |
158 | int vertexCount() const { return m_vertex_count; } |
159 | |
160 | void *vertexData() { return m_data; } |
161 | inline Point2D *vertexDataAsPoint2D(); |
162 | inline TexturedPoint2D *vertexDataAsTexturedPoint2D(); |
163 | inline ColoredPoint2D *vertexDataAsColoredPoint2D(); |
164 | |
165 | inline const void *vertexData() const { return m_data; } |
166 | inline const Point2D *vertexDataAsPoint2D() const; |
167 | inline const TexturedPoint2D *vertexDataAsTexturedPoint2D() const; |
168 | inline const ColoredPoint2D *vertexDataAsColoredPoint2D() const; |
169 | |
170 | inline int indexType() const { return m_index_type; } |
171 | |
172 | int indexCount() const { return m_index_count; } |
173 | |
174 | void *indexData(); |
175 | inline uint *indexDataAsUInt(); |
176 | inline quint16 *indexDataAsUShort(); |
177 | |
178 | inline int sizeOfIndex() const; |
179 | |
180 | const void *indexData() const; |
181 | inline const uint *indexDataAsUInt() const; |
182 | inline const quint16 *indexDataAsUShort() const; |
183 | |
184 | inline int attributeCount() const { return m_attributes.count; } |
185 | inline const Attribute *attributes() const { return m_attributes.attributes; } |
186 | inline int sizeOfVertex() const { return m_attributes.stride; } |
187 | |
188 | static void updateRectGeometry(QSGGeometry *g, const QRectF &rect); |
189 | static void updateTexturedRectGeometry(QSGGeometry *g, const QRectF &rect, const QRectF &sourceRect); |
190 | static void updateColoredRectGeometry(QSGGeometry *g, const QRectF &rect); |
191 | |
192 | void setIndexDataPattern(DataPattern p); |
193 | DataPattern indexDataPattern() const { return DataPattern(m_index_usage_pattern); } |
194 | |
195 | void setVertexDataPattern(DataPattern p); |
196 | DataPattern vertexDataPattern() const { return DataPattern(m_vertex_usage_pattern); } |
197 | |
198 | void markIndexDataDirty(); |
199 | void markVertexDataDirty(); |
200 | |
201 | float lineWidth() const; |
202 | void setLineWidth(float w); |
203 | |
204 | private: |
205 | friend class QSGGeometryData; |
206 | |
207 | int m_drawing_mode; |
208 | int m_vertex_count; |
209 | int m_index_count; |
210 | int m_index_type; |
211 | const AttributeSet &m_attributes; |
212 | void *m_data; |
213 | int m_index_data_offset; |
214 | |
215 | QSGGeometryData *m_server_data; |
216 | |
217 | uint m_owns_data : 1; |
218 | uint m_index_usage_pattern : 2; |
219 | uint m_vertex_usage_pattern : 2; |
220 | uint m_dirty_index_data : 1; |
221 | uint m_dirty_vertex_data : 1; |
222 | uint m_reserved_bits : 25; |
223 | |
224 | float m_prealloc[16]; |
225 | |
226 | float m_line_width; |
227 | }; |
228 | |
229 | inline uint *QSGGeometry::indexDataAsUInt() |
230 | { |
231 | Q_ASSERT(m_index_type == UnsignedIntType); |
232 | return static_cast<uint *>(indexData()); |
233 | } |
234 | |
235 | inline quint16 *QSGGeometry::indexDataAsUShort() |
236 | { |
237 | Q_ASSERT(m_index_type == UnsignedShortType); |
238 | return static_cast<quint16 *>(indexData()); |
239 | } |
240 | |
241 | inline const uint *QSGGeometry::indexDataAsUInt() const |
242 | { |
243 | Q_ASSERT(m_index_type == UnsignedIntType); |
244 | return static_cast<const uint *>(indexData()); |
245 | } |
246 | |
247 | inline const quint16 *QSGGeometry::indexDataAsUShort() const |
248 | { |
249 | Q_ASSERT(m_index_type == UnsignedShortType); |
250 | return static_cast<const quint16 *>(indexData()); |
251 | } |
252 | |
253 | inline QSGGeometry::Point2D *QSGGeometry::vertexDataAsPoint2D() |
254 | { |
255 | Q_ASSERT(m_attributes.count == 1); |
256 | Q_ASSERT(m_attributes.stride == 2 * sizeof(float)); |
257 | Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
258 | Q_ASSERT(m_attributes.attributes[0].type == FloatType); |
259 | Q_ASSERT(m_attributes.attributes[0].position == 0); |
260 | return static_cast<Point2D *>(m_data); |
261 | } |
262 | |
263 | inline QSGGeometry::TexturedPoint2D *QSGGeometry::vertexDataAsTexturedPoint2D() |
264 | { |
265 | Q_ASSERT(m_attributes.count == 2); |
266 | Q_ASSERT(m_attributes.stride == 4 * sizeof(float)); |
267 | Q_ASSERT(m_attributes.attributes[0].position == 0); |
268 | Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
269 | Q_ASSERT(m_attributes.attributes[0].type == FloatType); |
270 | Q_ASSERT(m_attributes.attributes[1].position == 1); |
271 | Q_ASSERT(m_attributes.attributes[1].tupleSize == 2); |
272 | Q_ASSERT(m_attributes.attributes[1].type == FloatType); |
273 | return static_cast<TexturedPoint2D *>(m_data); |
274 | } |
275 | |
276 | inline QSGGeometry::ColoredPoint2D *QSGGeometry::vertexDataAsColoredPoint2D() |
277 | { |
278 | Q_ASSERT(m_attributes.count == 2); |
279 | Q_ASSERT(m_attributes.stride == 2 * sizeof(float) + 4 * sizeof(char)); |
280 | Q_ASSERT(m_attributes.attributes[0].position == 0); |
281 | Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
282 | Q_ASSERT(m_attributes.attributes[0].type == FloatType); |
283 | Q_ASSERT(m_attributes.attributes[1].position == 1); |
284 | Q_ASSERT(m_attributes.attributes[1].tupleSize == 4); |
285 | Q_ASSERT(m_attributes.attributes[1].type == UnsignedByteType); |
286 | return static_cast<ColoredPoint2D *>(m_data); |
287 | } |
288 | |
289 | inline const QSGGeometry::Point2D *QSGGeometry::vertexDataAsPoint2D() const |
290 | { |
291 | Q_ASSERT(m_attributes.count == 1); |
292 | Q_ASSERT(m_attributes.stride == 2 * sizeof(float)); |
293 | Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
294 | Q_ASSERT(m_attributes.attributes[0].type == FloatType); |
295 | Q_ASSERT(m_attributes.attributes[0].position == 0); |
296 | return static_cast<const Point2D *>(m_data); |
297 | } |
298 | |
299 | inline const QSGGeometry::TexturedPoint2D *QSGGeometry::vertexDataAsTexturedPoint2D() const |
300 | { |
301 | Q_ASSERT(m_attributes.count == 2); |
302 | Q_ASSERT(m_attributes.stride == 4 * sizeof(float)); |
303 | Q_ASSERT(m_attributes.attributes[0].position == 0); |
304 | Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
305 | Q_ASSERT(m_attributes.attributes[0].type == FloatType); |
306 | Q_ASSERT(m_attributes.attributes[1].position == 1); |
307 | Q_ASSERT(m_attributes.attributes[1].tupleSize == 2); |
308 | Q_ASSERT(m_attributes.attributes[1].type == FloatType); |
309 | return static_cast<const TexturedPoint2D *>(m_data); |
310 | } |
311 | |
312 | inline const QSGGeometry::ColoredPoint2D *QSGGeometry::vertexDataAsColoredPoint2D() const |
313 | { |
314 | Q_ASSERT(m_attributes.count == 2); |
315 | Q_ASSERT(m_attributes.stride == 2 * sizeof(float) + 4 * sizeof(char)); |
316 | Q_ASSERT(m_attributes.attributes[0].position == 0); |
317 | Q_ASSERT(m_attributes.attributes[0].tupleSize == 2); |
318 | Q_ASSERT(m_attributes.attributes[0].type == FloatType); |
319 | Q_ASSERT(m_attributes.attributes[1].position == 1); |
320 | Q_ASSERT(m_attributes.attributes[1].tupleSize == 4); |
321 | Q_ASSERT(m_attributes.attributes[1].type == UnsignedByteType); |
322 | return static_cast<const ColoredPoint2D *>(m_data); |
323 | } |
324 | |
325 | int QSGGeometry::sizeOfIndex() const |
326 | { |
327 | if (m_index_type == UnsignedShortType) return 2; |
328 | else if (m_index_type == UnsignedByteType) return 1; |
329 | else if (m_index_type == UnsignedIntType) return 4; |
330 | return 0; |
331 | } |
332 | |
333 | QT_END_NAMESPACE |
334 | |
335 | #endif // QSGGEOMETRY_H |
336 | |