1 | #ifndef _FrameBufferObject_H__
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2 | #define _FrameBufferObject_H__
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3 |
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4 | #include <vector>
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5 | #include "common.h"
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6 |
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7 |
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8 | namespace CHCDemoEngine
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9 | {
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10 |
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11 |
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12 | /** This class implements a wrapper for a color buffer object
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13 | */
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14 | class ColorBufferObject
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15 | {
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16 | public:
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17 |
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18 | enum FORMAT { BUFFER_UBYTE, BUFFER_FLOAT_16, BUFFER_FLOAT_32 };
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19 | enum WRAP_TYPE{ WRAP_REPEAT, WRAP_CLAMP_TO_EDGE };
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20 | enum FILTER_TYPE { FILTER_NEAREST, FILTER_LINEAR, FILTER_MIPMAP_LINEAR };
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21 |
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22 | ColorBufferObject(int w, int h,
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23 | FORMAT c,
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24 | WRAP_TYPE wrapType,
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25 | FILTER_TYPE filterType,
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26 | bool useMipMap,
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27 | int attachment_idx);
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28 |
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29 | ~ColorBufferObject();
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30 |
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31 | unsigned int GetTexture() const {return mTexId;}
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32 |
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33 | protected:
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34 |
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35 | unsigned int mId;
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36 | unsigned int mTexId;
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37 | };
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38 |
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39 |
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40 | /** This class implements a wrapper for a frame buffer object
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41 | */
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42 | class FrameBufferObject
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43 | {
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44 | public:
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45 |
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46 | enum DEPTH_FORMAT { DEPTH_NONE, DEPTH_16, DEPTH_24, DEPTH_32 };
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47 |
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48 | /** constructor requesting an opengl occlusion query.
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49 | */
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50 | FrameBufferObject(int w, int h, DEPTH_FORMAT d, bool useDepthTex = false);
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51 |
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52 | ~FrameBufferObject();
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53 | /** Creates and adds a color buffer to the current frame buffer object.
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54 | Returns the index that allows to retrieve the color buffer object.
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55 | */
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56 | int AddColorBuffer(ColorBufferObject::FORMAT col,
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57 | ColorBufferObject::WRAP_TYPE wrapType,
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58 | ColorBufferObject::FILTER_TYPE filterType,
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59 | bool useMipMap);
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60 |
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61 | /** Returns the color buffer object on position i.
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62 | */
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63 | ColorBufferObject *GetColorBuffer(int i) const { return mColorBuffers[i]; }
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64 | /** Binds this frame buffer object.
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65 | */
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66 | void Bind() const;
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67 | /** Releases any bound frame buffer object.
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68 | */
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69 | static void Release();
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70 |
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71 | unsigned int GetDepthTex() const { return mDepthTexId; }
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72 |
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73 | protected:
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74 |
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75 | std::vector<ColorBufferObject *> mColorBuffers;
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76 |
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77 | unsigned int mId;
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78 | unsigned int mDepthId;
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79 |
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80 | int mHeight;
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81 | int mWidth;
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82 |
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83 | unsigned int mDepthTexId;
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84 | };
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85 |
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86 | } // namespace
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87 | #endif // _FrameBufferObject_H__ |
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