1 /* 2 SDL - Simple DirectMedia Layer 3 Copyright (C) 1997-2012 Sam Lantinga 4 5 This library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 This library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with this library; if not, write to the Free Software 17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 18 19 Sam Lantinga 20 slouken (at) libsdl.org 21 */ 22 #include "SDL_config.h" 23 24 /* WGL implementation of SDL OpenGL support */ 25 26 #include "../SDL_sysvideo.h" 27 28 29 struct SDL_PrivateGLData { 30 int gl_active; /* to stop switching drivers while we have a valid context */ 31 32 #if SDL_VIDEO_OPENGL 33 PIXELFORMATDESCRIPTOR GL_pfd; 34 HDC GL_hdc; 35 HGLRC GL_hrc; 36 int pixel_format; 37 int WGL_ARB_pixel_format; 38 39 void * (WINAPI *wglGetProcAddress)(const char *proc); 40 41 HGLRC (WINAPI *wglCreateContext)(HDC hdc); 42 43 BOOL (WINAPI *wglDeleteContext)(HGLRC hglrc); 44 45 BOOL (WINAPI *wglMakeCurrent)(HDC hdc, HGLRC hglrc); 46 47 BOOL (WINAPI *wglGetPixelFormatAttribivARB)(HDC hdc, int iPixelFormat, 48 int iLayerPlane, 49 UINT nAttributes, 50 const int *piAttributes, 51 int *piValues); 52 void (WINAPI *wglSwapIntervalEXT)(int interval); 53 int (WINAPI *wglGetSwapIntervalEXT)(void); 54 #endif /* SDL_VIDEO_OPENGL */ 55 }; 56 57 /* Old variable names */ 58 #define gl_active (this->gl_data->gl_active) 59 #define GL_pfd (this->gl_data->GL_pfd) 60 #define GL_hdc (this->gl_data->GL_hdc) 61 #define GL_hrc (this->gl_data->GL_hrc) 62 #define pixel_format (this->gl_data->pixel_format) 63 64 /* OpenGL functions */ 65 extern int WIN_GL_SetupWindow(_THIS); 66 extern void WIN_GL_ShutDown(_THIS); 67 #if SDL_VIDEO_OPENGL 68 extern int WIN_GL_MakeCurrent(_THIS); 69 extern int WIN_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value); 70 extern void WIN_GL_SwapBuffers(_THIS); 71 extern void WIN_GL_UnloadLibrary(_THIS); 72 extern int WIN_GL_LoadLibrary(_THIS, const char* path); 73 extern void *WIN_GL_GetProcAddress(_THIS, const char* proc); 74 #endif 75 76 #if SDL_VIDEO_OPENGL 77 78 #ifndef WGL_ARB_pixel_format 79 #define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000 80 #define WGL_DRAW_TO_WINDOW_ARB 0x2001 81 #define WGL_DRAW_TO_BITMAP_ARB 0x2002 82 #define WGL_ACCELERATION_ARB 0x2003 83 #define WGL_NEED_PALETTE_ARB 0x2004 84 #define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005 85 #define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006 86 #define WGL_SWAP_METHOD_ARB 0x2007 87 #define WGL_NUMBER_OVERLAYS_ARB 0x2008 88 #define WGL_NUMBER_UNDERLAYS_ARB 0x2009 89 #define WGL_TRANSPARENT_ARB 0x200A 90 #define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037 91 #define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038 92 #define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039 93 #define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A 94 #define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B 95 #define WGL_SHARE_DEPTH_ARB 0x200C 96 #define WGL_SHARE_STENCIL_ARB 0x200D 97 #define WGL_SHARE_ACCUM_ARB 0x200E 98 #define WGL_SUPPORT_GDI_ARB 0x200F 99 #define WGL_SUPPORT_OPENGL_ARB 0x2010 100 #define WGL_DOUBLE_BUFFER_ARB 0x2011 101 #define WGL_STEREO_ARB 0x2012 102 #define WGL_PIXEL_TYPE_ARB 0x2013 103 #define WGL_COLOR_BITS_ARB 0x2014 104 #define WGL_RED_BITS_ARB 0x2015 105 #define WGL_RED_SHIFT_ARB 0x2016 106 #define WGL_GREEN_BITS_ARB 0x2017 107 #define WGL_GREEN_SHIFT_ARB 0x2018 108 #define WGL_BLUE_BITS_ARB 0x2019 109 #define WGL_BLUE_SHIFT_ARB 0x201A 110 #define WGL_ALPHA_BITS_ARB 0x201B 111 #define WGL_ALPHA_SHIFT_ARB 0x201C 112 #define WGL_ACCUM_BITS_ARB 0x201D 113 #define WGL_ACCUM_RED_BITS_ARB 0x201E 114 #define WGL_ACCUM_GREEN_BITS_ARB 0x201F 115 #define WGL_ACCUM_BLUE_BITS_ARB 0x2020 116 #define WGL_ACCUM_ALPHA_BITS_ARB 0x2021 117 #define WGL_DEPTH_BITS_ARB 0x2022 118 #define WGL_STENCIL_BITS_ARB 0x2023 119 #define WGL_AUX_BUFFERS_ARB 0x2024 120 #define WGL_NO_ACCELERATION_ARB 0x2025 121 #define WGL_GENERIC_ACCELERATION_ARB 0x2026 122 #define WGL_FULL_ACCELERATION_ARB 0x2027 123 #define WGL_SWAP_EXCHANGE_ARB 0x2028 124 #define WGL_SWAP_COPY_ARB 0x2029 125 #define WGL_SWAP_UNDEFINED_ARB 0x202A 126 #define WGL_TYPE_RGBA_ARB 0x202B 127 #define WGL_TYPE_COLORINDEX_ARB 0x202C 128 #endif 129 130 #ifndef WGL_ARB_multisample 131 #define WGL_SAMPLE_BUFFERS_ARB 0x2041 132 #define WGL_SAMPLES_ARB 0x2042 133 #endif 134 135 #endif 136
