/*

SDL - Simple DirectMedia Layer

This library is free software; you can redistribute it and/or

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

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

/* WGL implementation of SDL OpenGL support */

struct SDL_PrivateGLData {

int gl_active; /* to stop switching drivers while we have a valid context */

PIXELFORMATDESCRIPTOR GL_pfd;

HDC GL_hdc;

HGLRC GL_hrc;

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 *wglChoosePixelFormatARB)(HDC hdc, const int *piAttribIList,

const FLOAT *pfAttribFList,

UINT nMaxFormats, int *piFormats,

UINT *nNumFormats);

BOOL (WINAPI *wglGetPixelFormatAttribivARB)(HDC hdc, int iPixelFormat,

int iLayerPlane,

UINT nAttributes,

const int *piAttributes,

int *piValues);

};

/* 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)

/* OpenGL functions */

extern int WIN_GL_SetupWindow(_THIS);

extern void WIN_GL_ShutDown(_THIS);

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

#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