#ifndef PBUFFERS_H #define PBUFFERS_H /* #include #include "GL/gl.h" #include #include "GL/wglext.h" #include */ #include #if defined(WIN32) #define WIN32_LEAN_AND_MEAN #include #endif #ifndef WGL_ARB_pbuffer #define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000 #define WGL_DRAW_TO_WINDOW_ARB 0x2001 #define WGL_DRAW_TO_BITMAP_ARB 0x2002 #define WGL_ACCELERATION_ARB 0x2003 #define WGL_NEED_PALETTE_ARB 0x2004 #define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005 #define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006 #define WGL_SWAP_METHOD_ARB 0x2007 #define WGL_NUMBER_OVERLAYS_ARB 0x2008 #define WGL_NUMBER_UNDERLAYS_ARB 0x2009 #define WGL_TRANSPARENT_ARB 0x200A #define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037 #define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038 #define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039 #define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A #define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B #define WGL_SHARE_DEPTH_ARB 0x200C #define WGL_SHARE_STENCIL_ARB 0x200D #define WGL_SHARE_ACCUM_ARB 0x200E #define WGL_SUPPORT_GDI_ARB 0x200F #define WGL_SUPPORT_OPENGL_ARB 0x2010 #define WGL_DOUBLE_BUFFER_ARB 0x2011 #define WGL_STEREO_ARB 0x2012 #define WGL_PIXEL_TYPE_ARB 0x2013 #define WGL_COLOR_BITS_ARB 0x2014 #define WGL_RED_BITS_ARB 0x2015 #define WGL_RED_SHIFT_ARB 0x2016 #define WGL_GREEN_BITS_ARB 0x2017 #define WGL_GREEN_SHIFT_ARB 0x2018 #define WGL_BLUE_BITS_ARB 0x2019 #define WGL_BLUE_SHIFT_ARB 0x201A #define WGL_ALPHA_BITS_ARB 0x201B #define WGL_ALPHA_SHIFT_ARB 0x201C #define WGL_ACCUM_BITS_ARB 0x201D #define WGL_ACCUM_RED_BITS_ARB 0x201E #define WGL_ACCUM_GREEN_BITS_ARB 0x201F #define WGL_ACCUM_BLUE_BITS_ARB 0x2020 #define WGL_ACCUM_ALPHA_BITS_ARB 0x2021 #define WGL_DEPTH_BITS_ARB 0x2022 #define WGL_STENCIL_BITS_ARB 0x2023 #define WGL_AUX_BUFFERS_ARB 0x2024 #define WGL_NO_ACCELERATION_ARB 0x2025 #define WGL_GENERIC_ACCELERATION_ARB 0x2026 #define WGL_FULL_ACCELERATION_ARB 0x2027 #define WGL_SWAP_EXCHANGE_ARB 0x2028 #define WGL_SWAP_COPY_ARB 0x2029 #define WGL_SWAP_UNDEFINED_ARB 0x202A #define WGL_TYPE_RGBA_ARB 0x202B #define WGL_TYPE_COLORINDEX_ARB 0x202C #define WGL_DRAW_TO_PBUFFER_ARB 0x202D #define WGL_MAX_PBUFFER_PIXELS_ARB 0x202E #define WGL_MAX_PBUFFER_WIDTH_ARB 0x202F #define WGL_MAX_PBUFFER_HEIGHT_ARB 0x2030 #define WGL_PBUFFER_LARGEST_ARB 0x2033 #define WGL_PBUFFER_WIDTH_ARB 0x2034 #define WGL_PBUFFER_HEIGHT_ARB 0x2035 #define WGL_PBUFFER_LOST_ARB 0x2036 #endif #ifndef WGL_ARB_pbuffer #define WGL_ARB_pbuffer 1 DECLARE_HANDLE(HPBUFFERARB); typedef HPBUFFERARB (WINAPI * WGLCreatePBufferProc) ( HDC hDC, int iPixelFormat, int iWidth, int iHeight, const int *piAttribList); typedef HDC (WINAPI * WGLGetPBufferDCProc) (HPBUFFERARB hPbuffer); typedef int (WINAPI * WGLReleasePBufferDCProc) ( HPBUFFERARB hPbuffer, HDC hDC); typedef BOOL (WINAPI * WGLDestroyPBufferProc) (HPBUFFERARB hPbuffer); typedef BOOL (WINAPI * WGLQueryPBufferProc) ( HPBUFFERARB hPbuffer, int iAttribute, int *piValue); #endif #ifndef WGL_ARB_pixel_format #define WGL_ARB_pixel_format 1 typedef BOOL (WINAPI * WGLGetPixelFormatAttribivProc) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, int *piValues); typedef BOOL (WINAPI * WGLGetPixelFormatAttribfvProc) (HDC hdc, int iPixelFormat, int iLayerPlane, UINT nAttributes, const int *piAttributes, FLOAT *pfValues); typedef BOOL (WINAPI * WGLChoosePixelFormatProc) (HDC hdc, const int *piAttribIList, const FLOAT *pfAttribFList, UINT nMaxFormats, int *piFormats, UINT *nNumFormats); #endif #ifndef WGL_ARB_render_texture #define WGL_BIND_TO_TEXTURE_RGB_ARB 0x2070 #define WGL_BIND_TO_TEXTURE_RGBA_ARB 0x2071 #define WGL_TEXTURE_FORMAT_ARB 0x2072 #define WGL_TEXTURE_TARGET_ARB 0x2073 #define WGL_MIPMAP_TEXTURE_ARB 0x2074 #define WGL_TEXTURE_RGB_ARB 0x2075 #define WGL_TEXTURE_RGBA_ARB 0x2076 #define WGL_NO_TEXTURE_ARB 0x2077 #define WGL_TEXTURE_CUBE_MAP_ARB 0x2078 #define WGL_TEXTURE_1D_ARB 0x2079 #define WGL_TEXTURE_2D_ARB 0x207A #define WGL_NO_TEXTURE_ARB 0x2077 #define WGL_MIPMAP_LEVEL_ARB 0x207B #define WGL_CUBE_MAP_FACE_ARB 0x207C #define WGL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB 0x207D #define WGL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB 0x207E #define WGL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB 0x207F #define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB 0x2080 #define WGL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB 0x2081 #define WGL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB 0x2082 #define WGL_FRONT_LEFT_ARB 0x2083 #define WGL_FRONT_RIGHT_ARB 0x2084 #define WGL_BACK_LEFT_ARB 0x2085 #define WGL_BACK_RIGHT_ARB 0x2086 #define WGL_AUX0_ARB 0x2087 #define WGL_AUX1_ARB 0x2088 #define WGL_AUX2_ARB 0x2089 #define WGL_AUX3_ARB 0x208A #define WGL_AUX4_ARB 0x208B #define WGL_AUX5_ARB 0x208C #define WGL_AUX6_ARB 0x208D #define WGL_AUX7_ARB 0x208E #define WGL_AUX8_ARB 0x208F #define WGL_AUX9_ARB 0x2090 #endif #ifndef WGL_ARB_render_texture #define WGL_ARB_render_texture 1 typedef BOOL (WINAPI * WGLBindTexImageProc) (HPBUFFERARB hPbuffer, int iBuffer); typedef BOOL (WINAPI * WGLReleaseTexImageProc) (HPBUFFERARB hPbuffer, int iBuffer); typedef BOOL (WINAPI * WGLSetPbufferAttribProc) (HPBUFFERARB hPbuffer, const int * piAttribList); #endif #define MAX_PFORMATS 256 #define MAX_ATTRIBS 32 class PBuffer { private: HDC _hDC; // Handle to a device context. HGLRC _hGLcontext; // Handle to a GL context. HPBUFFERARB _hPBuffer; // Handle to a pbuffer. int _width; int _height; bool _doubleBuffer; bool _RGB; bool _shareLists; unsigned int _minimumNumberDepthBits; unsigned int _minimumNumberAlphaBits; unsigned int _minimumNumberStencilBits; unsigned int _minimumNumberAccumulationBits; bool _isPBufferSupported; bool _isPixelFormatSupported; bool _isRenderTextureSupported; public: PBuffer(const int width, const int height ); ~PBuffer(); void handleModeSwitch(); void makeCurrent(); void initialize(); void bindTexImage(GLuint textureID); void releaseTexImage(); protected: void setupGLExtenions(); }; #endif