nux-0.9.48
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00001 /* 00002 * Copyright 2010 Inalogic® Inc. 00003 * 00004 * This program is free software: you can redistribute it and/or modify it 00005 * under the terms of the GNU Lesser General Public License, as 00006 * published by the Free Software Foundation; either version 2.1 or 3.0 00007 * of the License. 00008 * 00009 * This program is distributed in the hope that it will be useful, but 00010 * WITHOUT ANY WARRANTY; without even the implied warranties of 00011 * MERCHANTABILITY, SATISFACTORY QUALITY or FITNESS FOR A PARTICULAR 00012 * PURPOSE. See the applicable version of the GNU Lesser General Public 00013 * License for more details. 00014 * 00015 * You should have received a copy of both the GNU Lesser General Public 00016 * License along with this program. If not, see <http://www.gnu.org/licenses/> 00017 * 00018 * Authored by: Jay Taoko <jaytaoko@inalogic.com> 00019 * 00020 */ 00021 00022 00023 #ifndef IOPENGLFRAMEBUFFEROBJECT_H 00024 #define IOPENGLFRAMEBUFFEROBJECT_H 00025 00026 namespace nux 00027 { 00028 00029 class IOpenGLResource; 00030 class IOpenGLFrameBufferObject: public IOpenGLResource 00031 { 00032 NUX_DECLARE_OBJECT_TYPE (IOpenGLFrameBufferObject, IOpenGLResource); 00033 public: 00034 virtual ~IOpenGLFrameBufferObject(); 00035 00036 int FormatFrameBufferObject (int Width, int Height, BitmapFormat PixelFormat); 00037 int SetRenderTarget (int ColorAttachmentIndex, ObjectPtr<IOpenGLSurface> pRenderTargetSurface); 00038 int SetDepthSurface (ObjectPtr<IOpenGLSurface> pDepthSurface); 00039 ObjectPtr<IOpenGLSurface> GetRenderTarget (int ColorAttachmentIndex); 00040 ObjectPtr<IOpenGLSurface> GetDepthRenderTarget(); 00041 00042 int Clear (DWORD Flags, FLOAT red, FLOAT green, FLOAT blue, FLOAT alpha, FLOAT Z, DWORD Stencil); 00043 00044 int Activate (bool WithClippingStack = false); 00045 //### Restore the original opengl back buffer as defined when creating the opengl context(color + depth + stencil). 00046 int Deactivate(); 00047 bool IsActive() 00048 { 00049 return _IsActive; 00050 } 00051 00052 // For 2D screen operations 00053 std::vector<Rect> _ClippingRegionStack; 00054 void PushClippingRegion (Rect rect); 00055 void PopClippingRegion(); 00056 void EmptyClippingRegion(); 00057 void ApplyClippingRegion(); 00058 00060 00063 void SetClippingRectangle (const Rect &rect); 00064 00065 void SetOpenGLClippingRectangle (int x, int y, int width, int height); 00066 Rect GetClippingRegion(); 00067 int GetNumberOfClippingRegions () const; 00068 00069 int GetWidth() const 00070 { 00071 return _Width; 00072 } 00073 int GetHeight() const 00074 { 00075 return _Height; 00076 } 00077 00078 private: 00079 IOpenGLFrameBufferObject (NUX_FILE_LINE_PROTO); 00080 00081 int _Width; 00082 int _Height; 00083 BitmapFormat _PixelFormat; 00084 bool _IsActive; 00085 Rect _clipping_rect; 00086 00087 ObjectPtr<IOpenGLSurface> _Depth_Attachment; 00088 ObjectPtr<IOpenGLSurface> _Stencil_Attachment; 00089 std::vector< ObjectPtr<IOpenGLSurface> > _Color_AttachmentArray; 00090 00091 GLFramebufferObject _Fbo; // The framebuffer object used for rendering to the texture 00092 GLRenderbuffer _Rbo; 00093 00094 friend class GpuDevice; 00095 }; 00096 00097 } 00098 00099 #endif // IOPENGLFRAMEBUFFEROBJECT_H