00001 /********************************************************************** 00002 * texturegl.H 00003 **********************************************************************/ 00004 #ifndef __TEXTUREGL_H 00005 #define __TEXTUREGL_H 00006 00007 #include "std/support.H" 00008 #include "glew/glew.H" // must come first 00009 00010 #include "texture.H" 00011 #include "disp/view.H" 00012 00013 /********************************************************************** 00014 * TEXTUREgl: 00015 **********************************************************************/ 00016 MAKE_PTR_SUBC(TEXTUREgl, TEXTURE); 00017 typedef const TEXTUREglptr CTEXTUREglptr; 00018 class TEXTUREgl : public TEXTURE { 00019 public: 00020 TEXTUREgl(Cstr_ptr& file="", GLenum target=GL_TEXTURE_2D); 00021 TEXTUREgl(CBBOX2D& bb, CVIEWptr &v); 00022 TEXTUREgl(GLenum target, GLenum unit = GL_TEXTURE0); 00023 00024 00025 virtual ~TEXTUREgl() { free_dl(); } 00026 00027 mlib::Point2i get_size() const { return _img.dims(); } 00028 00029 virtual int load_image(); 00030 virtual int set_image(unsigned char *data, int w, int h, uint bpp=3); 00031 00032 // delete current texture (if any) and store the given filename 00033 // as the texture file to load next time we need the data: 00034 void set_texture(Cstr_ptr& filename); 00035 00036 GLuint get_tex_id() const { return _dl; } 00037 bool is_valid() const { return _dl_valid; } 00038 00039 virtual bool load_texture(unsigned char **copy = 0); 00040 00041 // Activates the texture and calls glEnable() to enable texturing. 00042 // NOTE: this should be called between glPushAttrib(GL_ENABLE_BIT) 00043 // and glPopAttrib() 00044 virtual void apply_texture(const mlib::Wtransf *xf = 0); 00045 00046 void copy_texture(CBBOX2D &bb, CVIEWptr &v); 00047 00048 void set_format(GLenum format) { _format = format; } 00049 GLenum format () const { return _format; } 00050 00051 void set_tex_unit(GLenum unit) { _tex_unit = unit; } 00052 GLenum get_tex_unit() const { return _tex_unit; } 00053 00054 void set_tex_fn(GLint fn) { _tex_fn = fn; } 00055 GLint tex_fn () const { return _tex_fn; } 00056 00057 void set_wrap_r(GLint wrapr) { _wrap_s = wrapr;} 00058 GLint wrap_r () const { return _wrap_r;} 00059 void set_wrap_s(GLint wraps) { _wrap_s = wraps;} 00060 GLint wrap_s () const { return _wrap_s;} 00061 void set_wrap_t(GLint wrapt) { _wrap_t = wrapt;} 00062 GLint wrap_t () const { return _wrap_t;} 00063 00064 void set_min_filter(GLint minfilt) { _min_filter = minfilt;} 00065 void set_max_filter(GLint maxfilt) { _max_filter = maxfilt;} 00066 00067 bool mipmap () const { return _mipmap;} 00068 void set_mipmap(bool mipmap); 00069 00070 void set_save_img(bool b = 1) { _save_img = b; } 00071 const GLenum target() const {return _target; } 00072 00073 void declare_texture(); 00074 00075 protected: 00076 GLuint _dl; // texture object (was display list in OGL 1.1) 00077 bool _dl_valid; // _dl is valid 00078 GLenum _format; // GL_RGB, GL_RGBA, etc. 00079 GLenum _tex_unit; // GL_TEXTURE0 by default 00080 bool _save_img; // whether to free image data after loading 00081 bool _mipmap; // Mipmap or not 00082 GLint _min_filter; 00083 GLint _max_filter; 00084 GLint _wrap_r; 00085 GLint _wrap_s; 00086 GLint _wrap_t; 00087 GLint _tex_fn; // texture function (GL_DECAL etc.) 00088 const GLenum _target; // GL_TEXTURE_2D or GL_TEXTURE_3D 00089 00090 GLenum bpp_to_format() const { 00091 return ((_img.bpp()==4) ? GL_RGBA : 00092 (_img.bpp()==3) ? GL_RGB : 00093 (_img.bpp()==2) ? GL_LUMINANCE_ALPHA : 00094 GL_LUMINANCE 00095 ); 00096 } 00097 00098 void free_dl(); 00099 00100 // allocate texture object: 00101 00102 00103 void init_settings(); 00104 }; 00105 00106 #endif // __TEXTUREGL_H 00107 00108 // end of file texturegl.H
1.4.4