7 // LordHavoc: these are only set in wgl
8 qboolean isG200 = false; // LordHavoc: the Matrox G200 can't do per pixel alpha, and it uses a D3D driver for GL... ugh...
9 qboolean isRagePro = false; // LordHavoc: the ATI Rage Pro has limitations with per pixel alpha (the color scaler does not apply to per pixel alpha images...), although not as bad as a G200.
11 // LordHavoc: GL_ARB_multitexture support
12 int gl_textureunits = 0;
13 // LordHavoc: GL_ARB_texture_env_combine or GL_EXT_texture_env_combine support
14 int gl_combine_extension = false;
15 // LordHavoc: GL_EXT_compiled_vertex_array support
16 int gl_supportslockarrays = false;
17 // LordHavoc: GLX_SGI_video_sync and WGL_EXT_swap_control
18 int gl_videosyncavailable = false;
19 // indicates that stencil is available
20 int gl_stencil = false;
22 // LordHavoc: if window is hidden, don't update screen
23 int vid_hidden = true;
24 // LordHavoc: if window is not the active window, don't hog as much CPU time,
25 // let go of the mouse, turn off sound, and restore system gamma ramps...
26 int vid_activewindow = true;
28 cvar_t vid_fullscreen = {CVAR_SAVE, "vid_fullscreen", "1"};
29 cvar_t vid_width = {CVAR_SAVE, "vid_width", "640"};
30 cvar_t vid_height = {CVAR_SAVE, "vid_height", "480"};
31 cvar_t vid_bitsperpixel = {CVAR_SAVE, "vid_bitsperpixel", "16"};
32 cvar_t vid_stencil = {CVAR_SAVE, "vid_stencil", "0"};
34 cvar_t vid_mouse = {CVAR_SAVE, "vid_mouse", "1"};
35 cvar_t gl_combine = {0, "gl_combine", "1"};
37 cvar_t in_pitch_min = {0, "in_pitch_min", "-90"};
38 cvar_t in_pitch_max = {0, "in_pitch_max", "90"};
40 cvar_t m_filter = {CVAR_SAVE, "m_filter","0"};
42 // brand of graphics chip
43 const char *gl_vendor;
44 // graphics chip model and other information
45 const char *gl_renderer;
46 // begins with 1.0.0, 1.1.0, 1.2.0, 1.2.1, 1.3.0, 1.3.1, or 1.4.0
47 const char *gl_version;
48 // extensions list, space separated
49 const char *gl_extensions;
51 const char *gl_platform;
52 // another extensions list, containing platform-specific extensions that are
53 // not in the main list
54 const char *gl_platformextensions;
55 // name of driver library (opengl32.dll, libGL.so.1, or whatever)
58 // GL_ARB_multitexture
59 void (GLAPIENTRY *qglMultiTexCoord2f) (GLenum, GLfloat, GLfloat);
60 void (GLAPIENTRY *qglActiveTexture) (GLenum);
61 void (GLAPIENTRY *qglClientActiveTexture) (GLenum);
63 // GL_EXT_compiled_vertex_array
64 void (GLAPIENTRY *qglLockArraysEXT) (GLint first, GLint count);
65 void (GLAPIENTRY *qglUnlockArraysEXT) (void);
68 // general GL functions
70 void (GLAPIENTRY *qglClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
72 void (GLAPIENTRY *qglClear)(GLbitfield mask);
74 //void (GLAPIENTRY *qglAlphaFunc)(GLenum func, GLclampf ref);
75 void (GLAPIENTRY *qglBlendFunc)(GLenum sfactor, GLenum dfactor);
76 void (GLAPIENTRY *qglCullFace)(GLenum mode);
78 void (GLAPIENTRY *qglDrawBuffer)(GLenum mode);
79 void (GLAPIENTRY *qglReadBuffer)(GLenum mode);
80 void (GLAPIENTRY *qglEnable)(GLenum cap);
81 void (GLAPIENTRY *qglDisable)(GLenum cap);
82 //GLboolean GLAPIENTRY *qglIsEnabled)(GLenum cap);
84 void (GLAPIENTRY *qglEnableClientState)(GLenum cap);
85 void (GLAPIENTRY *qglDisableClientState)(GLenum cap);
87 void (GLAPIENTRY *qglGetBooleanv)(GLenum pname, GLboolean *params);
88 void (GLAPIENTRY *qglGetDoublev)(GLenum pname, GLdouble *params);
89 void (GLAPIENTRY *qglGetFloatv)(GLenum pname, GLfloat *params);
90 void (GLAPIENTRY *qglGetIntegerv)(GLenum pname, GLint *params);
92 GLenum (GLAPIENTRY *qglGetError)(void);
93 const GLubyte* (GLAPIENTRY *qglGetString)(GLenum name);
94 void (GLAPIENTRY *qglFinish)(void);
95 void (GLAPIENTRY *qglFlush)(void);
97 void (GLAPIENTRY *qglClearDepth)(GLclampd depth);
98 void (GLAPIENTRY *qglDepthFunc)(GLenum func);
99 void (GLAPIENTRY *qglDepthMask)(GLboolean flag);
100 void (GLAPIENTRY *qglDepthRange)(GLclampd near_val, GLclampd far_val);
101 void (GLAPIENTRY *qglColorMask)(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
103 void (GLAPIENTRY *qglDrawRangeElements)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
104 void (GLAPIENTRY *qglDrawElements)(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
105 void (GLAPIENTRY *qglVertexPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
106 //void (GLAPIENTRY *qglNormalPointer)(GLenum type, GLsizei stride, const GLvoid *ptr);
107 void (GLAPIENTRY *qglColorPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
108 void (GLAPIENTRY *qglTexCoordPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
109 void (GLAPIENTRY *qglArrayElement)(GLint i);
111 void (GLAPIENTRY *qglColor4f)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
112 void (GLAPIENTRY *qglTexCoord2f)(GLfloat s, GLfloat t);
113 void (GLAPIENTRY *qglVertex2f)(GLfloat x, GLfloat y);
114 void (GLAPIENTRY *qglVertex3f)(GLfloat x, GLfloat y, GLfloat z);
115 void (GLAPIENTRY *qglBegin)(GLenum mode);
116 void (GLAPIENTRY *qglEnd)(void);
118 void (GLAPIENTRY *qglMatrixMode)(GLenum mode);
119 void (GLAPIENTRY *qglOrtho)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
120 void (GLAPIENTRY *qglFrustum)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
121 void (GLAPIENTRY *qglViewport)(GLint x, GLint y, GLsizei width, GLsizei height);
122 //void (GLAPIENTRY *qglPushMatrix)(void);
123 //void (GLAPIENTRY *qglPopMatrix)(void);
124 void (GLAPIENTRY *qglLoadIdentity)(void);
125 void (GLAPIENTRY *qglLoadMatrixd)(const GLdouble *m);
126 void (GLAPIENTRY *qglLoadMatrixf)(const GLfloat *m);
127 //void (GLAPIENTRY *qglMultMatrixd)(const GLdouble *m);
128 //void (GLAPIENTRY *qglMultMatrixf)(const GLfloat *m);
129 //void (GLAPIENTRY *qglRotated)(GLdouble angle, GLdouble x, GLdouble y, GLdouble z);
130 void (GLAPIENTRY *qglRotatef)(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
131 //void (GLAPIENTRY *qglScaled)(GLdouble x, GLdouble y, GLdouble z);
132 //void (GLAPIENTRY *qglScalef)(GLfloat x, GLfloat y, GLfloat z);
133 //void (GLAPIENTRY *qglTranslated)(GLdouble x, GLdouble y, GLdouble z);
134 void (GLAPIENTRY *qglTranslatef)(GLfloat x, GLfloat y, GLfloat z);
136 void (GLAPIENTRY *qglReadPixels)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
138 void (GLAPIENTRY *qglStencilFunc)(GLenum func, GLint ref, GLuint mask);
139 void (GLAPIENTRY *qglStencilMask)(GLuint mask);
140 void (GLAPIENTRY *qglStencilOp)(GLenum fail, GLenum zfail, GLenum zpass);
141 void (GLAPIENTRY *qglClearStencil)(GLint s);
143 //void (GLAPIENTRY *qglTexEnvf)(GLenum target, GLenum pname, GLfloat param);
144 void (GLAPIENTRY *qglTexEnvi)(GLenum target, GLenum pname, GLint param);
146 //void (GLAPIENTRY *qglTexParameterf)(GLenum target, GLenum pname, GLfloat param);
147 void (GLAPIENTRY *qglTexParameteri)(GLenum target, GLenum pname, GLint param);
149 void (GLAPIENTRY *qglBindTexture)(GLenum target, GLuint texture);
150 void (GLAPIENTRY *qglTexImage2D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
151 void (GLAPIENTRY *qglTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
152 void (GLAPIENTRY *qglDeleteTextures)(GLsizei n, const GLuint *textures);
153 void (GLAPIENTRY *qglPixelStoref)(GLenum pname, GLfloat param);
154 void (GLAPIENTRY *qglPixelStorei)(GLenum pname, GLint param);
156 void (GLAPIENTRY *qglDrawRangeElementsEXT)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
158 //void (GLAPIENTRY *qglColorTableEXT)(int, int, int, int, int, const void *);
160 int GL_CheckExtension(const char *name, const gl_extensionfunctionlist_t *funcs, const char *disableparm, int silent)
163 const gl_extensionfunctionlist_t *func;
165 Con_Printf("checking for %s... ", name);
167 for (func = funcs;func && func->name;func++)
168 *func->funcvariable = NULL;
170 if (disableparm && COM_CheckParm(disableparm))
172 Con_Printf("disabled by commandline\n");
176 if (strstr(gl_extensions, name) || strstr(gl_platformextensions, name) || (strncmp(name, "GL_", 3) && strncmp(name, "WGL_", 4) && strncmp(name, "GLX_", 4) && strncmp(name, "AGL_", 4)))
178 for (func = funcs;func && func->name != NULL;func++)
180 // functions are cleared before all the extensions are evaluated
181 if (!(*func->funcvariable = (void *) GL_GetProcAddress(func->name)))
184 Con_Printf("missing function \"%s\" - broken driver!\n", func->name);
188 // delay the return so it prints all missing functions
191 Con_Printf("enabled\n");
196 Con_Printf("not detected\n");
201 static gl_extensionfunctionlist_t opengl110funcs[] =
203 {"glClearColor", (void **) &qglClearColor},
204 {"glClear", (void **) &qglClear},
205 // {"glAlphaFunc", (void **) &qglAlphaFunc},
206 {"glBlendFunc", (void **) &qglBlendFunc},
207 {"glCullFace", (void **) &qglCullFace},
208 {"glDrawBuffer", (void **) &qglDrawBuffer},
209 {"glReadBuffer", (void **) &qglReadBuffer},
210 {"glEnable", (void **) &qglEnable},
211 {"glDisable", (void **) &qglDisable},
212 // {"glIsEnabled", (void **) &qglIsEnabled},
213 {"glEnableClientState", (void **) &qglEnableClientState},
214 {"glDisableClientState", (void **) &qglDisableClientState},
215 {"glGetBooleanv", (void **) &qglGetBooleanv},
216 {"glGetDoublev", (void **) &qglGetDoublev},
217 {"glGetFloatv", (void **) &qglGetFloatv},
218 {"glGetIntegerv", (void **) &qglGetIntegerv},
219 {"glGetError", (void **) &qglGetError},
220 {"glGetString", (void **) &qglGetString},
221 {"glFinish", (void **) &qglFinish},
222 {"glFlush", (void **) &qglFlush},
223 {"glClearDepth", (void **) &qglClearDepth},
224 {"glDepthFunc", (void **) &qglDepthFunc},
225 {"glDepthMask", (void **) &qglDepthMask},
226 {"glDepthRange", (void **) &qglDepthRange},
227 {"glDrawElements", (void **) &qglDrawElements},
228 {"glColorMask", (void **) &qglColorMask},
229 {"glVertexPointer", (void **) &qglVertexPointer},
230 // {"glNormalPointer", (void **) &qglNormalPointer},
231 {"glColorPointer", (void **) &qglColorPointer},
232 {"glTexCoordPointer", (void **) &qglTexCoordPointer},
233 {"glArrayElement", (void **) &qglArrayElement},
234 {"glColor4f", (void **) &qglColor4f},
235 {"glTexCoord2f", (void **) &qglTexCoord2f},
236 {"glVertex2f", (void **) &qglVertex2f},
237 {"glVertex3f", (void **) &qglVertex3f},
238 {"glBegin", (void **) &qglBegin},
239 {"glEnd", (void **) &qglEnd},
240 {"glMatrixMode", (void **) &qglMatrixMode},
241 {"glOrtho", (void **) &qglOrtho},
242 {"glFrustum", (void **) &qglFrustum},
243 {"glViewport", (void **) &qglViewport},
244 // {"glPushMatrix", (void **) &qglPushMatrix},
245 // {"glPopMatrix", (void **) &qglPopMatrix},
246 {"glLoadIdentity", (void **) &qglLoadIdentity},
247 {"glLoadMatrixd", (void **) &qglLoadMatrixd},
248 {"glLoadMatrixf", (void **) &qglLoadMatrixf},
249 // {"glMultMatrixd", (void **) &qglMultMatrixd},
250 // {"glMultMatrixf", (void **) &qglMultMatrixf},
251 // {"glRotated", (void **) &qglRotated},
252 {"glRotatef", (void **) &qglRotatef},
253 // {"glScaled", (void **) &qglScaled},
254 // {"glScalef", (void **) &qglScalef},
255 // {"glTranslated", (void **) &qglTranslated},
256 {"glTranslatef", (void **) &qglTranslatef},
257 {"glReadPixels", (void **) &qglReadPixels},
258 {"glStencilFunc", (void **) &qglStencilFunc},
259 {"glStencilMask", (void **) &qglStencilMask},
260 {"glStencilOp", (void **) &qglStencilOp},
261 {"glClearStencil", (void **) &qglClearStencil},
262 // {"glTexEnvf", (void **) &qglTexEnvf},
263 {"glTexEnvi", (void **) &qglTexEnvi},
264 // {"glTexParameterf", (void **) &qglTexParameterf},
265 {"glTexParameteri", (void **) &qglTexParameteri},
266 {"glBindTexture", (void **) &qglBindTexture},
267 {"glTexImage2D", (void **) &qglTexImage2D},
268 {"glTexSubImage2D", (void **) &qglTexSubImage2D},
269 {"glDeleteTextures", (void **) &qglDeleteTextures},
270 {"glPixelStoref", (void **) &qglPixelStoref},
271 {"glPixelStorei", (void **) &qglPixelStorei},
275 static gl_extensionfunctionlist_t drawrangeelementsfuncs[] =
277 {"glDrawRangeElements", (void **) &qglDrawRangeElements},
281 static gl_extensionfunctionlist_t drawrangeelementsextfuncs[] =
283 {"glDrawRangeElementsEXT", (void **) &qglDrawRangeElementsEXT},
287 static gl_extensionfunctionlist_t multitexturefuncs[] =
289 {"glMultiTexCoord2fARB", (void **) &qglMultiTexCoord2f},
290 {"glActiveTextureARB", (void **) &qglActiveTexture},
291 {"glClientActiveTextureARB", (void **) &qglClientActiveTexture},
295 static gl_extensionfunctionlist_t compiledvertexarrayfuncs[] =
297 {"glLockArraysEXT", (void **) &qglLockArraysEXT},
298 {"glUnlockArraysEXT", (void **) &qglUnlockArraysEXT},
302 void VID_CheckExtensions(void)
304 gl_combine_extension = false;
305 gl_supportslockarrays = false;
308 if (!GL_CheckExtension("OpenGL 1.1.0", opengl110funcs, NULL, false))
309 Sys_Error("OpenGL 1.1.0 functions not found\n");
311 Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
312 Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
313 Con_Printf ("GL_VERSION: %s\n", gl_version);
314 Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
315 Con_Printf ("%s_EXTENSIONS: %s\n", gl_platform, gl_platformextensions);
317 Con_Printf("Checking OpenGL extensions...\n");
319 if (!GL_CheckExtension("glDrawRangeElements", drawrangeelementsfuncs, "-nodrawrangeelements", true))
320 GL_CheckExtension("GL_EXT_draw_range_elements", drawrangeelementsextfuncs, "-nodrawrangeelements", false);
322 if (GL_CheckExtension("GL_ARB_multitexture", multitexturefuncs, "-nomtex", false))
324 qglGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &gl_textureunits);
325 if (gl_textureunits > 1)
326 gl_combine_extension = GL_CheckExtension("GL_ARB_texture_env_combine", NULL, "-nocombine", false) || GL_CheckExtension("GL_EXT_texture_env_combine", NULL, "-nocombine", false);
329 Con_Printf("GL_ARB_multitexture with less than 2 units? - BROKEN DRIVER!\n");
330 gl_textureunits = 1; // for sanity sake, make sure it's not 0
334 gl_supportslockarrays = GL_CheckExtension("GL_EXT_compiled_vertex_array", compiledvertexarrayfuncs, "-nocva", false);
336 // we don't care if it's an extension or not, they are identical functions, so keep it simple in the rendering code
337 if (qglDrawRangeElements == NULL)
338 qglDrawRangeElements = qglDrawRangeElementsEXT;
341 void Force_CenterView_f (void)
343 cl.viewangles[PITCH] = 0;
346 void IN_PreMove(void)
350 void CL_AdjustAngles(void);
351 void IN_PostMove(void)
353 // clamp after the move as well to prevent messed up rendering angles
357 void IN_Mouse(usercmd_t *cmd, float mx, float my)
359 int mouselook = (in_mlook.state & 1) || freelook.integer;
360 float mouse_x, mouse_y;
361 static float old_mouse_x = 0, old_mouse_y = 0;
363 if (m_filter.integer)
365 mouse_x = (mx + old_mouse_x) * 0.5;
366 mouse_y = (my + old_mouse_y) * 0.5;
377 // LordHavoc: viewzoom affects mouse sensitivity for sniping
378 mouse_x *= sensitivity.value * cl.viewzoom;
379 mouse_y *= sensitivity.value * cl.viewzoom;
381 // Add mouse X/Y movement to cmd
382 if ((in_strafe.state & 1) || (lookstrafe.integer && mouselook))
383 cmd->sidemove += m_side.value * mouse_x;
385 cl.viewangles[YAW] -= m_yaw.value * mouse_x;
390 if (mouselook && !(in_strafe.state & 1))
391 cl.viewangles[PITCH] += m_pitch.value * mouse_y;
394 if ((in_strafe.state & 1) && noclip_anglehack)
395 cmd->upmove -= m_forward.value * mouse_y;
397 cmd->forwardmove -= m_forward.value * mouse_y;
401 void VID_Shared_Init(void)
405 Cvar_RegisterVariable(&vid_fullscreen);
406 Cvar_RegisterVariable(&vid_width);
407 Cvar_RegisterVariable(&vid_height);
408 Cvar_RegisterVariable(&vid_bitsperpixel);
409 Cvar_RegisterVariable(&vid_stencil);
410 Cvar_RegisterVariable(&vid_mouse);
411 Cvar_RegisterVariable(&gl_combine);
412 Cvar_RegisterVariable(&in_pitch_min);
413 Cvar_RegisterVariable(&in_pitch_max);
414 Cvar_RegisterVariable(&m_filter);
415 Cmd_AddCommand("force_centerview", Force_CenterView_f);
416 Cmd_AddCommand("vid_restart", VID_Restart_f);
418 // interpret command-line parameters
419 if ((i = COM_CheckParm("-window")) != 0)
420 Cvar_SetValueQuick(&vid_fullscreen, false);
421 if ((i = COM_CheckParm("-fullscreen")) != 0)
422 Cvar_SetValueQuick(&vid_fullscreen, true);
423 if ((i = COM_CheckParm("-width")) != 0)
424 Cvar_SetQuick(&vid_width, com_argv[i+1]);
425 if ((i = COM_CheckParm("-height")) != 0)
426 Cvar_SetQuick(&vid_height, com_argv[i+1]);
427 if ((i = COM_CheckParm("-bpp")) != 0)
428 Cvar_SetQuick(&vid_bitsperpixel, com_argv[i+1]);
429 if ((i = COM_CheckParm("-nostencil")) != 0)
430 Cvar_SetValueQuick(&vid_stencil, 0);
431 if ((i = COM_CheckParm("-stencil")) != 0)
432 Cvar_SetValueQuick(&vid_stencil, 1);
435 int current_vid_fullscreen;
436 int current_vid_width;
437 int current_vid_height;
438 int current_vid_bitsperpixel;
439 int current_vid_stencil;
440 extern int VID_InitMode (int fullscreen, int width, int height, int bpp, int stencil);
441 int VID_Mode(int fullscreen, int width, int height, int bpp, int stencil)
443 Con_Printf("Video: %s %dx%dx%d %s\n", fullscreen ? "fullscreen" : "window", width, height, bpp, stencil ? "with stencil" : "without stencil");
444 if (VID_InitMode(fullscreen, width, height, bpp, stencil))
446 current_vid_fullscreen = fullscreen;
447 current_vid_width = width;
448 current_vid_height = height;
449 current_vid_bitsperpixel = bpp;
450 current_vid_stencil = stencil;
451 Cvar_SetValueQuick(&vid_fullscreen, fullscreen);
452 Cvar_SetValueQuick(&vid_width, width);
453 Cvar_SetValueQuick(&vid_height, height);
454 Cvar_SetValueQuick(&vid_bitsperpixel, bpp);
455 Cvar_SetValueQuick(&vid_stencil, stencil);
462 static void VID_OpenSystems(void)
469 static void VID_CloseSystems(void)
473 R_Modules_Shutdown();
476 void VID_Restart_f(void)
478 Con_Printf("VID_Restart: changing from %s %dx%dx%dbpp %s, to %s %dx%dx%dbpp %s.\n",
479 current_vid_fullscreen ? "fullscreen" : "window", current_vid_width, current_vid_height, current_vid_bitsperpixel, current_vid_stencil ? "with stencil" : "without stencil",
480 vid_fullscreen.integer ? "fullscreen" : "window", vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, vid_stencil.integer ? "with stencil" : "without stencil");
482 if (!VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, vid_stencil.integer))
484 Con_Printf("Video mode change failed\n");
485 if (!VID_Mode(current_vid_fullscreen, current_vid_width, current_vid_height, current_vid_bitsperpixel, current_vid_stencil))
486 Sys_Error("Unable to restore to last working video mode\n");
493 Con_Printf("Starting video system\n");
494 if (!VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, vid_stencil.integer))
496 Con_Printf("Desired video mode fail, trying fallbacks...\n");
497 if (!vid_stencil.integer || !VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, false))
499 if (vid_fullscreen.integer)
501 if (!VID_Mode(true, 640, 480, 16, false))
502 if (!VID_Mode(false, 640, 480, 16, false))
503 Sys_Error("Video modes failed\n");
506 Sys_Error("Windowed video failed\n");