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GeometryBufferBase.h
1 /***********************************************************************
2  created: Tue Apr 30 2013
3  authors: Paul D Turner <paul@cegui.org.uk>
4  Lukas E Meindl
5 *************************************************************************/
6 /***************************************************************************
7  * Copyright (C) 2004 - 2013 Paul D Turner & The CEGUI Development Team
8  *
9  * Permission is hereby granted, free of charge, to any person obtaining
10  * a copy of this software and associated documentation files (the
11  * "Software"), to deal in the Software without restriction, including
12  * without limitation the rights to use, copy, modify, merge, publish,
13  * distribute, sublicense, and/or sell copies of the Software, and to
14  * permit persons to whom the Software is furnished to do so, subject to
15  * the following conditions:
16  *
17  * The above copyright notice and this permission notice shall be
18  * included in all copies or substantial portions of the Software.
19  *
20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
23  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
24  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
25  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
26  * OTHER DEALINGS IN THE SOFTWARE.
27  ***************************************************************************/
28 #ifndef _CEGUIGeometryBufferBase_h_
29 #define _CEGUIGeometryBufferBase_h_
30 
31 #include "../../GeometryBuffer.h"
32 #include "CEGUI/RendererModules/OpenGL/RendererBase.h"
33 #include "../../Rect.h"
34 #include "../../Quaternion.h"
35 
36 #include <utility>
37 #include <vector>
38 
39 #if defined(_MSC_VER)
40 # pragma warning(push)
41 # pragma warning(disable : 4251)
42 #endif
43 
44 namespace CEGUI
45 {
46 class OpenGLTexture;
47 
52 class OPENGL_GUIRENDERER_API OpenGLGeometryBufferBase : public GeometryBuffer
53 {
54 public:
56  OpenGLGeometryBufferBase(OpenGLRendererBase& owner);
57  virtual ~OpenGLGeometryBufferBase();
58 
59  // implementation of abstract members from GeometryBuffer
60  void setTranslation(const Vector3f& t);
61  void setRotation(const Quaternion& r);
62  void setPivot(const Vector3f& p);
63  void setClippingRegion(const Rectf& region);
64  void appendVertex(const Vertex& vertex);
65  void appendGeometry(const Vertex* const vbuff, uint vertex_count);
66  void setActiveTexture(Texture* texture);
67  void reset();
68  Texture* getActiveTexture() const;
69  uint getVertexCount() const;
70  uint getBatchCount() const;
71  void setRenderEffect(RenderEffect* effect);
72  RenderEffect* getRenderEffect();
73  void setClippingActive(const bool active);
74  bool isClippingActive() const;
75 
77  const mat4Pimpl* getMatrix() const;
78 
79 protected:
81  void performBatchManagement();
82 
84  void updateMatrix() const;
85 
87  struct GLVertex
88  {
89  float tex[2];
90  float colour[4];
91  float position[3];
92  };
93 
95  struct BatchInfo
96  {
97  uint texture;
98  uint vertexCount;
99  bool clip;
100  };
101 
103  OpenGLRendererBase* d_owner;
105  OpenGLTexture* d_activeTexture;
107  typedef std::vector<BatchInfo> BatchList;
109  BatchList d_batches;
111  typedef std::vector<GLVertex> VertexList;
113  VertexList d_vertices;
115  Rectf d_clipRect;
117  bool d_clippingActive;
119  Vector3f d_translation;
121  Quaternion d_rotation;
123  Vector3f d_pivot;
125  RenderEffect* d_effect;
127  mutable mat4Pimpl* d_matrix;
129  mutable bool d_matrixValid;
130 };
131 
132 }
133 
134 #if defined(_MSC_VER)
135 # pragma warning(pop)
136 #endif
137 
138 #endif
139