author  Sam Lantinga <slouken@libsdl.org> 
Thu, 27 Jul 2006 06:53:23 +0000  
changeset 1951  7177581dc9fa 
parent 1936  83946ee0ff1f 
child 1952  420716272158 
permissions  rwrr 
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/* 
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SDL  Simple DirectMedia Layer 
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Copyright (C) 19972006 Sam Lantinga 
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4 

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This library is free software; you can redistribute it and/or 
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modify it under the terms of the GNU Lesser General Public 
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License as published by the Free Software Foundation; either 
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version 2.1 of the License, or (at your option) any later version. 
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9 

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This library is distributed in the hope that it will be useful, 
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but WITHOUT ANY WARRANTY; without even the implied warranty of 
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 
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Lesser General Public License for more details. 
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You should have received a copy of the GNU Lesser General Public 
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License along with this library; if not, write to the Free Software 
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 021101301 USA 
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Sam Lantinga 
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slouken@libsdl.org 
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*/ 
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#include "SDL_config.h" 
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#include "SDL_win32video.h" 
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/* WGL implementation of SDL OpenGL support */ 
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#if SDL_VIDEO_OPENGL 
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#include "SDL_opengl.h" 
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#define DEFAULT_OPENGL_PATH "OPENGL32.DLL" 
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int 
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WIN_GL_LoadLibrary(_THIS, const char *path) 
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{ 
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LPTSTR wpath; 
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HANDLE handle; 
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if (_this>gl_config.driver_loaded) { 
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if (path) { 
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SDL_SetError("OpenGL library already loaded"); 
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return 1; 
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} else { 
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++_this>gl_config.driver_loaded; 
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return 0; 
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} 
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} 
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if (path == NULL) { 
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path = DEFAULT_OPENGL_PATH; 
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} 
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wpath = WIN_UTF8ToString(path); 
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handle = LoadLibrary(wpath); 
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SDL_free(wpath); 
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if (!handle) { 
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char message[1024]; 
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SDL_snprintf(message, SDL_arraysize(message), "LoadLibrary(\"%s\")", 
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path); 
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WIN_SetError(message); 
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return 1; 
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} 
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/* Load function pointers */ 
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_this>gl_data>wglGetProcAddress = (void *(WINAPI *) (const char *)) 
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GetProcAddress(handle, "wglGetProcAddress"); 
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_this>gl_data>wglCreateContext = (HGLRC(WINAPI *) (HDC)) 
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GetProcAddress(handle, "wglCreateContext"); 
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_this>gl_data>wglDeleteContext = (BOOL(WINAPI *) (HGLRC)) 
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GetProcAddress(handle, "wglDeleteContext"); 
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_this>gl_data>wglMakeCurrent = (BOOL(WINAPI *) (HDC, HGLRC)) 
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GetProcAddress(handle, "wglMakeCurrent"); 
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_this>gl_data>wglSwapIntervalEXT = (void (WINAPI *) (int)) 
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GetProcAddress(handle, "wglSwapIntervalEXT"); 
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_this>gl_data>wglGetSwapIntervalEXT = (int (WINAPI *) (void)) 
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GetProcAddress(handle, "wglGetSwapIntervalEXT"); 
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if (!_this>gl_data>wglGetProcAddress  
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!_this>gl_data>wglCreateContext  
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!_this>gl_data>wglDeleteContext  
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!_this>gl_data>wglMakeCurrent) { 
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SDL_SetError("Could not retrieve OpenGL functions"); 
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FreeLibrary(handle); 
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return 1; 
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} 
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_this>gl_config.dll_handle = handle; 
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SDL_strlcpy(_this>gl_config.driver_path, path, 
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SDL_arraysize(_this>gl_config.driver_path)); 
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_this>gl_config.driver_loaded = 1; 
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return 0; 
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} 
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void * 
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WIN_GL_GetProcAddress(_THIS, const char *proc) 
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{ 
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void *func; 
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/* This is to pick up extensions */ 
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func = _this>gl_data>wglGetProcAddress(proc); 
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if (!func) { 
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/* This is probably a normal GL function */ 
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func = GetProcAddress(_this>gl_config.dll_handle, proc); 
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} 
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return func; 
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} 
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static void 
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WIN_GL_UnloadLibrary(_THIS) 
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{ 
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if (_this>gl_config.driver_loaded > 0) { 
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if (_this>gl_config.driver_loaded > 0) { 
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return; 
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} 
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FreeLibrary((HMODULE) _this>gl_config.dll_handle); 
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_this>gl_config.dll_handle = NULL; 
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} 
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} 
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static void 
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WIN_GL_SetupPixelFormat(_THIS, PIXELFORMATDESCRIPTOR * pfd) 
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{ 
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SDL_zerop(pfd); 
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pfd>nSize = sizeof(*pfd); 
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pfd>nVersion = 1; 
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pfd>dwFlags = (PFD_DRAW_TO_WINDOW  PFD_SUPPORT_OPENGL); 
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if (_this>gl_config.double_buffer) { 
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pfd>dwFlags = PFD_DOUBLEBUFFER; 
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} 
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if (_this>gl_config.stereo) { 
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pfd>dwFlags = PFD_STEREO; 
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} 
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pfd>iLayerType = PFD_MAIN_PLANE; 
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pfd>iPixelType = PFD_TYPE_RGBA; 
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pfd>cRedBits = _this>gl_config.red_size; 
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pfd>cGreenBits = _this>gl_config.green_size; 
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pfd>cBlueBits = _this>gl_config.blue_size; 
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pfd>cAlphaBits = _this>gl_config.alpha_size; 
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if (_this>gl_config.buffer_size) { 
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pfd>cColorBits = 
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_this>gl_config.buffer_size  _this>gl_config.alpha_size; 
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141 
} else { 
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142 
pfd>cColorBits = (pfd>cRedBits + pfd>cGreenBits + pfd>cBlueBits); 
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143 
} 
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144 
pfd>cAccumRedBits = _this>gl_config.accum_red_size; 
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145 
pfd>cAccumGreenBits = _this>gl_config.accum_green_size; 
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146 
pfd>cAccumBlueBits = _this>gl_config.accum_blue_size; 
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147 
pfd>cAccumAlphaBits = _this>gl_config.accum_alpha_size; 
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148 
pfd>cAccumBits = 
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149 
(pfd>cAccumRedBits + pfd>cAccumGreenBits + pfd>cAccumBlueBits + 
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150 
pfd>cAccumAlphaBits); 
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151 
pfd>cDepthBits = _this>gl_config.depth_size; 
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152 
pfd>cStencilBits = _this>gl_config.stencil_size; 
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153 
} 
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154 

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155 
static SDL_bool 
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156 
HasExtension(const char *extension, const char *extensions) 
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157 
{ 
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158 
const char *start; 
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159 
const char *where, *terminator; 
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160 

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161 
/* Extension names should not have spaces. */ 
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162 
where = SDL_strchr(extension, ' '); 
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163 
if (where  *extension == '\0') 
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164 
return SDL_FALSE; 
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165 

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166 
if (!extensions) 
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167 
return SDL_FALSE; 
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168 

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169 
/* It takes a bit of care to be foolproof about parsing the 
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170 
* OpenGL extensions string. Don't be fooled by substrings, 
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171 
* etc. */ 
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172 

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173 
start = extensions; 
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174 

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175 
for (;;) { 
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176 
where = SDL_strstr(start, extension); 
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177 
if (!where) 
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178 
break; 
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179 

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180 
terminator = where + SDL_strlen(extension); 
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181 
if (where == start  *(where  1) == ' ') 
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182 
if (*terminator == ' '  *terminator == '\0') 
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183 
return SDL_TRUE; 
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184 

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185 
start = terminator; 
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186 
} 
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187 
return SDL_FALSE; 
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188 
} 
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189 

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190 
static void 
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191 
WIN_GL_InitExtensions(_THIS) 
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192 
{ 
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193 
HWND hwnd; 
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194 
HDC hdc; 
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195 
PIXELFORMATDESCRIPTOR pfd; 
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196 
int pixel_format; 
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197 
HGLRC hglrc; 
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198 
const char *(WINAPI * wglGetExtensionsStringARB) (HDC) = 0; 
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199 
const char *extensions; 
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200 

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201 
hwnd = 
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202 
CreateWindow(SDL_Appname, SDL_Appname, (WS_POPUP  WS_DISABLED), 0, 0, 
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203 
10, 10, NULL, NULL, SDL_Instance, NULL); 
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204 
WIN_PumpEvents(_this); 
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205 

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206 
hdc = GetDC(hwnd); 
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207 

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208 
WIN_GL_SetupPixelFormat(_this, &pfd); 
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209 
pixel_format = ChoosePixelFormat(hdc, &pfd); 
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210 
SetPixelFormat(hdc, pixel_format, &pfd); 
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211 

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212 
hglrc = _this>gl_data>wglCreateContext(hdc); 
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213 
if (hglrc) { 
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214 
_this>gl_data>wglMakeCurrent(hdc, hglrc); 
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215 
} 
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216 

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217 
wglGetExtensionsStringARB = (const char *(WINAPI *) (HDC)) 
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218 
_this>gl_data>wglGetProcAddress("wglGetExtensionsStringARB"); 
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219 
if (wglGetExtensionsStringARB) { 
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220 
extensions = wglGetExtensionsStringARB(hdc); 
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221 
} else { 
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222 
extensions = NULL; 
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223 
} 
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224 

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225 
/* Check for WGL_ARB_pixel_format */ 
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226 
_this>gl_data>WGL_ARB_pixel_format = 0; 
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227 
if (HasExtension("WGL_ARB_pixel_format", extensions)) { 
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228 
_this>gl_data>wglChoosePixelFormatARB = (BOOL(WINAPI *) 
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229 
(HDC, const int *, 
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230 
const FLOAT *, UINT, 
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231 
int *, UINT *)) 
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232 
WIN_GL_GetProcAddress(_this, "wglChoosePixelFormatARB"); 
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233 
_this>gl_data>wglGetPixelFormatAttribivARB = 
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234 
(BOOL(WINAPI *) (HDC, int, int, UINT, const int *, int *)) 
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235 
WIN_GL_GetProcAddress(_this, "wglGetPixelFormatAttribivARB"); 
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236 

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237 
if ((_this>gl_data>wglChoosePixelFormatARB != NULL) && 
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238 
(_this>gl_data>wglGetPixelFormatAttribivARB != NULL)) { 
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239 
_this>gl_data>WGL_ARB_pixel_format = 1; 
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240 
} 
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241 
} 
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242 

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243 
/* Check for WGL_EXT_swap_control */ 
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244 
if (HasExtension("WGL_EXT_swap_control", extensions)) { 
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245 
_this>gl_data>wglSwapIntervalEXT = 
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changeset

246 
WIN_GL_GetProcAddress(_this, "wglSwapIntervalEXT"); 
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247 
_this>gl_data>wglGetSwapIntervalEXT = 
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248 
WIN_GL_GetProcAddress(_this, "wglGetSwapIntervalEXT"); 
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249 
} 
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250 

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251 
if (hglrc) { 
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252 
_this>gl_data>wglMakeCurrent(NULL, NULL); 
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253 
_this>gl_data>wglDeleteContext(hglrc); 
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254 
} 
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255 
ReleaseDC(hwnd, hdc); 
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256 
DestroyWindow(hwnd); 
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257 
WIN_PumpEvents(_this); 
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258 
} 
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259 

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260 
static void 
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261 
WIN_GL_Shutdown(_THIS) 
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262 
{ 
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changeset

263 
if (!_this>gl_data  (_this>gl_data>initialized > 0)) { 
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264 
return; 
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changeset

265 
} 
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changeset

266 

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267 
WIN_GL_UnloadLibrary(_this); 
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268 

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269 
SDL_free(_this>gl_data); 
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270 
_this>gl_data = NULL; 
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271 
} 
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272 

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273 
static int 
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274 
WIN_GL_Initialize(_THIS) 
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275 
{ 
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276 
if (_this>gl_data) { 
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277 
++_this>gl_data>initialized; 
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278 
return 0; 
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279 
} 
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280 

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281 
_this>gl_data = 
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282 
(struct SDL_GLDriverData *) SDL_calloc(1, 
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283 
sizeof(struct 
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changeset

284 
SDL_GLDriverData)); 
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Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

285 
if (!_this>gl_data) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

286 
SDL_OutOfMemory(); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

287 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

288 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

289 
_this>gl_data>initialized = 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

290 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

291 
if (WIN_GL_LoadLibrary(_this, NULL) < 0) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

292 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

293 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

294 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

295 
/* Initialize extensions */ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

296 
WIN_GL_InitExtensions(_this); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

297 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

298 
return 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

299 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

300 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

301 
int 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

302 
WIN_GL_SetupWindow(_THIS, SDL_Window * window) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

303 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

304 
HDC hdc = ((SDL_WindowData *) window>driverdata)>hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

305 
PIXELFORMATDESCRIPTOR pfd; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

306 
int pixel_format; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

307 
unsigned int matching; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

308 
int iAttribs[64]; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

309 
int *iAttr; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

310 
float fAttribs[1] = { 0 }; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

311 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

312 
if (WIN_GL_Initialize(_this) < 0) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

313 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

314 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

315 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

316 
WIN_GL_SetupPixelFormat(_this, &pfd); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

317 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

318 
/* setup WGL_ARB_pixel_format attribs */ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

319 
iAttr = &iAttribs[0]; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

320 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

321 
*iAttr++ = WGL_DRAW_TO_WINDOW_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

322 
*iAttr++ = GL_TRUE; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

323 
*iAttr++ = WGL_ACCELERATION_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

324 
*iAttr++ = WGL_FULL_ACCELERATION_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

325 
*iAttr++ = WGL_RED_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

326 
*iAttr++ = _this>gl_config.red_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

327 
*iAttr++ = WGL_GREEN_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

328 
*iAttr++ = _this>gl_config.green_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

329 
*iAttr++ = WGL_BLUE_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

330 
*iAttr++ = _this>gl_config.blue_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

331 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

332 
if (_this>gl_config.alpha_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

333 
*iAttr++ = WGL_ALPHA_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

334 
*iAttr++ = _this>gl_config.alpha_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

335 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

336 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

337 
*iAttr++ = WGL_DOUBLE_BUFFER_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

338 
*iAttr++ = _this>gl_config.double_buffer; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

339 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

340 
*iAttr++ = WGL_DEPTH_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

341 
*iAttr++ = _this>gl_config.depth_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

342 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

343 
if (_this>gl_config.stencil_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

344 
*iAttr++ = WGL_STENCIL_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

345 
*iAttr++ = _this>gl_config.stencil_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

346 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

347 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

348 
if (_this>gl_config.accum_red_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

349 
*iAttr++ = WGL_ACCUM_RED_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

350 
*iAttr++ = _this>gl_config.accum_red_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

351 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

352 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

353 
if (_this>gl_config.accum_green_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

354 
*iAttr++ = WGL_ACCUM_GREEN_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

355 
*iAttr++ = _this>gl_config.accum_green_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

356 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

357 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

358 
if (_this>gl_config.accum_blue_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

359 
*iAttr++ = WGL_ACCUM_BLUE_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

360 
*iAttr++ = _this>gl_config.accum_blue_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

361 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

362 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

363 
if (_this>gl_config.accum_alpha_size) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

364 
*iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

365 
*iAttr++ = _this>gl_config.accum_alpha_size; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

366 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

367 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

368 
if (_this>gl_config.stereo) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

369 
*iAttr++ = WGL_STEREO_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

370 
*iAttr++ = GL_TRUE; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

371 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

372 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

373 
if (_this>gl_config.multisamplebuffers) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

374 
*iAttr++ = WGL_SAMPLE_BUFFERS_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

375 
*iAttr++ = _this>gl_config.multisamplebuffers; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

376 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

377 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

378 
if (_this>gl_config.multisamplesamples) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

379 
*iAttr++ = WGL_SAMPLES_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

380 
*iAttr++ = _this>gl_config.multisamplesamples; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

381 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

382 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

383 
if (_this>gl_config.accelerated >= 0) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

384 
*iAttr++ = WGL_ACCELERATION_ARB; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

385 
*iAttr++ = 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

386 
(_this>gl_config. 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

387 
accelerated ? WGL_GENERIC_ACCELERATION_ARB : 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

388 
WGL_NO_ACCELERATION_ARB); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

389 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

390 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

391 
*iAttr = 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

392 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

393 
/* Choose and set the closest available pixel format */ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

394 
if (!_this>gl_data>WGL_ARB_pixel_format 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

395 
 !_this>gl_data>wglChoosePixelFormatARB(hdc, iAttribs, fAttribs, 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

396 
1, &pixel_format, 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

397 
&matching)  !matching) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

398 
pixel_format = ChoosePixelFormat(hdc, &pfd); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

399 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

400 
if (!pixel_format) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

401 
SDL_SetError("No matching GL pixel format available"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

402 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

403 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

404 
if (!SetPixelFormat(hdc, pixel_format, &pfd)) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

405 
WIN_SetError("SetPixelFormat()"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

406 
return (1); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

407 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

408 
return 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

409 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

410 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

411 
void 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

412 
WIN_GL_CleanupWindow(_THIS, SDL_Window * window) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

413 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

414 
WIN_GL_Shutdown(_this); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

415 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

416 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

417 
SDL_GLContext 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

418 
WIN_GL_CreateContext(_THIS, SDL_Window * window) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

419 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

420 
HDC hdc = ((SDL_WindowData *) window>driverdata)>hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

421 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

422 
return _this>gl_data>wglCreateContext(hdc); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

423 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

424 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

425 
int 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

426 
WIN_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

427 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

428 
HDC hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

429 
int status; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

430 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

431 
if (window) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

432 
hdc = ((SDL_WindowData *) window>driverdata)>hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

433 
} else { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

434 
hdc = NULL; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

435 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

436 
if (!_this>gl_data>wglMakeCurrent(hdc, (HGLRC) context)) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

437 
WIN_SetError("wglMakeCurrent()"); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

438 
status = 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

439 
} else { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

440 
status = 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

441 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

442 
return status; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

443 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

444 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

445 
int 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

446 
WIN_GL_SetSwapInterval(_THIS, int interval) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

447 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

448 
if (_this>gl_data>wglSwapIntervalEXT) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

449 
_this>gl_data>wglSwapIntervalEXT(interval); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

450 
return 0; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

451 
} else { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

452 
SDL_Unsupported(); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

453 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

454 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

455 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

456 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

457 
int 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

458 
WIN_GL_GetSwapInterval(_THIS) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

459 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

460 
if (_this>gl_data>wglGetSwapIntervalEXT) { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

461 
return _this>gl_data>wglGetSwapIntervalEXT(); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

462 
} else { 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

463 
SDL_Unsupported(); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

464 
return 1; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

465 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

466 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

467 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

468 
void 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

469 
WIN_GL_SwapWindow(_THIS, SDL_Window * window) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

470 
{ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

471 
HDC hdc = ((SDL_WindowData *) window>driverdata)>hdc; 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

472 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

473 
SwapBuffers(hdc); 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

474 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

475 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

476 
void 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

477 
WIN_GL_DeleteContext(_THIS, SDL_GLContext context) 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

478 
{ 
1936
83946ee0ff1f
Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
1926
diff
changeset

479 
_this>gl_data>wglDeleteContext((HGLRC) context); 
1913
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

480 
} 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

481 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

482 
#endif /* SDL_VIDEO_OPENGL */ 
83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

483 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

484 

83420da906a5
Implemented Windows OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents:
diff
changeset

485 
/* vi: set ts=4 sw=4 expandtab: */ 