| /* |
| SDL - Simple DirectMedia Layer |
| Copyright (C) 1997-2012 Sam Lantinga |
| |
| This library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| This library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with this library; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| |
| Sam Lantinga |
| slouken@libsdl.org |
| */ |
| #include "SDL_config.h" |
| |
| /* WGL implementation of SDL OpenGL support */ |
| |
| #include "../SDL_sysvideo.h" |
| |
| |
| struct SDL_PrivateGLData { |
| int gl_active; /* to stop switching drivers while we have a valid context */ |
| |
| #if SDL_VIDEO_OPENGL |
| PIXELFORMATDESCRIPTOR GL_pfd; |
| HDC GL_hdc; |
| HGLRC GL_hrc; |
| int pixel_format; |
| int WGL_ARB_pixel_format; |
| |
| void * (WINAPI *wglGetProcAddress)(const char *proc); |
| |
| HGLRC (WINAPI *wglCreateContext)(HDC hdc); |
| |
| BOOL (WINAPI *wglDeleteContext)(HGLRC hglrc); |
| |
| BOOL (WINAPI *wglMakeCurrent)(HDC hdc, HGLRC hglrc); |
| |
| BOOL (WINAPI *wglGetPixelFormatAttribivARB)(HDC hdc, int iPixelFormat, |
| int iLayerPlane, |
| UINT nAttributes, |
| const int *piAttributes, |
| int *piValues); |
| void (WINAPI *wglSwapIntervalEXT)(int interval); |
| int (WINAPI *wglGetSwapIntervalEXT)(void); |
| #endif /* SDL_VIDEO_OPENGL */ |
| }; |
| |
| /* Old variable names */ |
| #define gl_active (this->gl_data->gl_active) |
| #define GL_pfd (this->gl_data->GL_pfd) |
| #define GL_hdc (this->gl_data->GL_hdc) |
| #define GL_hrc (this->gl_data->GL_hrc) |
| #define pixel_format (this->gl_data->pixel_format) |
| |
| /* OpenGL functions */ |
| extern int WIN_GL_SetupWindow(_THIS); |
| extern void WIN_GL_ShutDown(_THIS); |
| #if SDL_VIDEO_OPENGL |
| extern int WIN_GL_MakeCurrent(_THIS); |
| extern int WIN_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value); |
| extern void WIN_GL_SwapBuffers(_THIS); |
| extern void WIN_GL_UnloadLibrary(_THIS); |
| extern int WIN_GL_LoadLibrary(_THIS, const char* path); |
| extern void *WIN_GL_GetProcAddress(_THIS, const char* proc); |
| #endif |
| |
| #if SDL_VIDEO_OPENGL |
| |
| #ifndef WGL_ARB_pixel_format |
| #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 |
| #endif |
| |
| #ifndef WGL_ARB_multisample |
| #define WGL_SAMPLE_BUFFERS_ARB 0x2041 |
| #define WGL_SAMPLES_ARB 0x2042 |
| #endif |
| |
| #endif |