Stellarium 0.12.3
StelQGLInterleavedArrayVertexBufferBackend.hpp
1 
2 /*
3  * Stellarium
4  * Copyright (C) 2012 Ferdinand Majerech
5  *
6  * This program is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU General Public License
8  * as published by the Free Software Foundation; either version 2
9  * of the License, or (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335, USA.
19  */
20 
21 #ifndef _STELQGLINTERLEAVEDARRAYVERTEXBUFFERBACKEND_HPP_
22 #define _STELQGLINTERLEAVEDARRAYVERTEXBUFFERBACKEND_HPP_
23 
24 #include <cstring>
25 
26 #include "VecMath.hpp"
27 #include "StelProjectorType.hpp"
28 #include "StelVertexBuffer.hpp"
29 #include "StelVertexBufferBackend.hpp"
30 #include "StelVertexAttribute.hpp"
31 
32 
43 {
44 private:
45  static const int VERTEX_ALIGN = 16;
46 public:
48 
49  virtual void addVertex(const void* const vertexInPtr);
50 
51  virtual void getVertex(const int index, void* const vertexOutPtr) const;
52 
53  virtual void setVertex(const int index, const void* const vertexInPtr)
54  {
55  std::memcpy(vertices + index * vertexStride, vertexInPtr, vertexBytes);
56  }
57 
58  virtual void lock()
59  {
60  locked = true;
61  }
62 
63  virtual void unlock()
64  {
65  locked = false;
66  }
67 
68  virtual void clear()
69  {
70  vertexCount = 0;
71  }
72 
82  void projectVertices(StelProjector* projector,
83  class StelQGLIndexBuffer* indexBuffer);
84 
86  int length() const
87  {
88  return vertexCount;
89  }
90 
92  PrimitiveType getPrimitiveType() const
93  {
94  return primitiveType;
95  }
96 
97 protected:
99  bool locked;
100 
102  PrimitiveType primitiveType;
103 
106 
109 
112 
117 
127  char* vertices;
128 
137 
144 
147 
154  StelQGLInterleavedArrayVertexBufferBackend(const PrimitiveType type,
155  const QVector<StelVertexAttribute>& attributes);
156 };
157 
158 #endif // _STELQGLINTERLEAVEDARRAYVERTEXBUFFERBACKEND_HPP_