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/*
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
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