vid_shared.c

   1
   2 #include "quakedef.h"
   3
   4 // global video state
   5 viddef_t vid;
   6
   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.
  10
  11 // GL_ARB_multitexture
  12 int gl_textureunits = 0;
  13 // GL_ARB_texture_env_combine or GL_EXT_texture_env_combine
  14 int gl_combine_extension = false;
  15 // GL_EXT_compiled_vertex_array
  16 int gl_supportslockarrays = false;
  17 // GLX_SGI_video_sync or WGL_EXT_swap_control
  18 int gl_videosyncavailable = false;
  19 // stencil available
  20 int gl_stencil = false;
  21 // 3D textures available
  22 int gl_texture3d = false;
  23 // GL_ARB_texture_cubemap
  24 int gl_texturecubemap = false;
  25 // GL_ARB_texture_env_dot3
  26 int gl_dot3arb = false;
  27 // GL_SGIS_texture_edge_clamp
  28 int gl_support_clamptoedge = false;
  29 // GL_NV_vertex_array_range
  30 int gl_support_var = false;
  31 // GL_NV_vertex_array_range2
  32 int gl_support_var2 = false;
  33
  34 // LordHavoc: if window is hidden, don't update screen
  35 int vid_hidden = true;
  36 // LordHavoc: if window is not the active window, don't hog as much CPU time,
  37 // let go of the mouse, turn off sound, and restore system gamma ramps...
  38 int vid_activewindow = true;
  39 // LordHavoc: whether to allow use of hwgamma (disabled when window is inactive)
  40 int vid_allowhwgamma = false;
  41
  42 // we don't know until we try it!
  43 int vid_hardwaregammasupported = true;
  44 // whether hardware gamma ramps are currently in effect
  45 int vid_usinghwgamma = false;
  46
  47 unsigned short vid_gammaramps[768];
  48 unsigned short vid_systemgammaramps[768];
  49
  50 cvar_t vid_fullscreen = {CVAR_SAVE, "vid_fullscreen", "1"};
  51 cvar_t vid_width = {CVAR_SAVE, "vid_width", "640"};
  52 cvar_t vid_height = {CVAR_SAVE, "vid_height", "480"};
  53 cvar_t vid_bitsperpixel = {CVAR_SAVE, "vid_bitsperpixel", "16"};
  54 cvar_t vid_stencil = {CVAR_SAVE, "vid_stencil", "0"};
  55
  56 cvar_t vid_mouse = {CVAR_SAVE, "vid_mouse", "1"};
  57 cvar_t gl_combine = {0, "gl_combine", "1"};
  58
  59 cvar_t in_pitch_min = {0, "in_pitch_min", "-70"};
  60 cvar_t in_pitch_max = {0, "in_pitch_max", "80"};
  61
  62 cvar_t m_filter = {CVAR_SAVE, "m_filter","0"};
  63
  64 cvar_t v_gamma = {CVAR_SAVE, "v_gamma", "1"};
  65 cvar_t v_contrast = {CVAR_SAVE, "v_contrast", "1"};
  66 cvar_t v_brightness = {CVAR_SAVE, "v_brightness", "0"};
  67 cvar_t v_color_enable = {CVAR_SAVE, "v_color_enable", "0"};
  68 cvar_t v_color_black_r = {CVAR_SAVE, "v_color_black_r", "0"};
  69 cvar_t v_color_black_g = {CVAR_SAVE, "v_color_black_g", "0"};
  70 cvar_t v_color_black_b = {CVAR_SAVE, "v_color_black_b", "0"};
  71 cvar_t v_color_grey_r = {CVAR_SAVE, "v_color_grey_r", "0.5"};
  72 cvar_t v_color_grey_g = {CVAR_SAVE, "v_color_grey_g", "0.5"};
  73 cvar_t v_color_grey_b = {CVAR_SAVE, "v_color_grey_b", "0.5"};
  74 cvar_t v_color_white_r = {CVAR_SAVE, "v_color_white_r", "1"};
  75 cvar_t v_color_white_g = {CVAR_SAVE, "v_color_white_g", "1"};
  76 cvar_t v_color_white_b = {CVAR_SAVE, "v_color_white_b", "1"};
  77 cvar_t v_overbrightbits = {CVAR_SAVE, "v_overbrightbits", "0"};
  78 cvar_t v_hwgamma = {0, "v_hwgamma", "1"};
  79
  80 // brand of graphics chip
  81 const char *gl_vendor;
  82 // graphics chip model and other information
  83 const char *gl_renderer;
  84 // begins with 1.0.0, 1.1.0, 1.2.0, 1.2.1, 1.3.0, 1.3.1, or 1.4.0
  85 const char *gl_version;
  86 // extensions list, space separated
  87 const char *gl_extensions;
  88 // WGL, GLX, or AGL
  89 const char *gl_platform;
  90 // another extensions list, containing platform-specific extensions that are
  91 // not in the main list
  92 const char *gl_platformextensions;
  93 // name of driver library (opengl32.dll, libGL.so.1, or whatever)
  94 char gl_driver[256];
  95
  96 // GL_ARB_multitexture
  97 //void (GLAPIENTRY *qglMultiTexCoord2f) (GLenum, GLfloat, GLfloat);
  98 void (GLAPIENTRY *qglActiveTexture) (GLenum);
  99 void (GLAPIENTRY *qglClientActiveTexture) (GLenum);
 100
 101 // GL_EXT_compiled_vertex_array
 102 void (GLAPIENTRY *qglLockArraysEXT) (GLint first, GLint count);
 103 void (GLAPIENTRY *qglUnlockArraysEXT) (void);
 104
 105 //GL_NV_vertex_array_range
 106 GLvoid *(GLAPIENTRY *qglAllocateMemoryNV)(GLsizei size, GLfloat readFrequency, GLfloat writeFrequency, GLfloat priority);
 107 GLvoid (GLAPIENTRY *qglFreeMemoryNV)(GLvoid *pointer);
 108 GLvoid (GLAPIENTRY *qglVertexArrayRangeNV)(GLsizei length, GLvoid *pointer);
 109 GLvoid (GLAPIENTRY *qglFlushVertexArrayRangeNV)(GLvoid);
 110
 111 // general GL functions
 112
 113 void (GLAPIENTRY *qglClearColor)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha);
 114
 115 void (GLAPIENTRY *qglClear)(GLbitfield mask);
 116
 117 //void (GLAPIENTRY *qglAlphaFunc)(GLenum func, GLclampf ref);
 118 void (GLAPIENTRY *qglBlendFunc)(GLenum sfactor, GLenum dfactor);
 119 void (GLAPIENTRY *qglCullFace)(GLenum mode);
 120
 121 //void (GLAPIENTRY *qglDrawBuffer)(GLenum mode);
 122 //void (GLAPIENTRY *qglReadBuffer)(GLenum mode);
 123 void (GLAPIENTRY *qglEnable)(GLenum cap);
 124 void (GLAPIENTRY *qglDisable)(GLenum cap);
 125 //GLboolean GLAPIENTRY *qglIsEnabled)(GLenum cap);
 126
 127 void (GLAPIENTRY *qglEnableClientState)(GLenum cap);
 128 void (GLAPIENTRY *qglDisableClientState)(GLenum cap);
 129
 130 //void (GLAPIENTRY *qglGetBooleanv)(GLenum pname, GLboolean *params);
 131 //void (GLAPIENTRY *qglGetDoublev)(GLenum pname, GLdouble *params);
 132 //void (GLAPIENTRY *qglGetFloatv)(GLenum pname, GLfloat *params);
 133 void (GLAPIENTRY *qglGetIntegerv)(GLenum pname, GLint *params);
 134
 135 GLenum (GLAPIENTRY *qglGetError)(void);
 136 const GLubyte* (GLAPIENTRY *qglGetString)(GLenum name);
 137 void (GLAPIENTRY *qglFinish)(void);
 138 void (GLAPIENTRY *qglFlush)(void);
 139
 140 void (GLAPIENTRY *qglClearDepth)(GLclampd depth);
 141 void (GLAPIENTRY *qglDepthFunc)(GLenum func);
 142 void (GLAPIENTRY *qglDepthMask)(GLboolean flag);
 143 //void (GLAPIENTRY *qglDepthRange)(GLclampd near_val, GLclampd far_val);
 144 void (GLAPIENTRY *qglColorMask)(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha);
 145
 146 void (GLAPIENTRY *qglDrawRangeElements)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
 147 void (GLAPIENTRY *qglDrawElements)(GLenum mode, GLsizei count, GLenum type, const GLvoid *indices);
 148 void (GLAPIENTRY *qglVertexPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
 149 //void (GLAPIENTRY *qglNormalPointer)(GLenum type, GLsizei stride, const GLvoid *ptr);
 150 void (GLAPIENTRY *qglColorPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
 151 void (GLAPIENTRY *qglTexCoordPointer)(GLint size, GLenum type, GLsizei stride, const GLvoid *ptr);
 152 //void (GLAPIENTRY *qglArrayElement)(GLint i);
 153
 154 void (GLAPIENTRY *qglColor4f)(GLfloat red, GLfloat green, GLfloat blue, GLfloat alpha);
 155 //void (GLAPIENTRY *qglTexCoord2f)(GLfloat s, GLfloat t);
 156 //void (GLAPIENTRY *qglVertex2f)(GLfloat x, GLfloat y);
 157 //void (GLAPIENTRY *qglVertex3f)(GLfloat x, GLfloat y, GLfloat z);
 158 //void (GLAPIENTRY *qglBegin)(GLenum mode);
 159 //void (GLAPIENTRY *qglEnd)(void);
 160
 161 void (GLAPIENTRY *qglMatrixMode)(GLenum mode);
 162 void (GLAPIENTRY *qglOrtho)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
 163 void (GLAPIENTRY *qglFrustum)(GLdouble left, GLdouble right, GLdouble bottom, GLdouble top, GLdouble near_val, GLdouble far_val);
 164 void (GLAPIENTRY *qglViewport)(GLint x, GLint y, GLsizei width, GLsizei height);
 165 //void (GLAPIENTRY *qglPushMatrix)(void);
 166 //void (GLAPIENTRY *qglPopMatrix)(void);
 167 void (GLAPIENTRY *qglLoadIdentity)(void);
 168 //void (GLAPIENTRY *qglLoadMatrixd)(const GLdouble *m);
 169 void (GLAPIENTRY *qglLoadMatrixf)(const GLfloat *m);
 170 //void (GLAPIENTRY *qglMultMatrixd)(const GLdouble *m);
 171 //void (GLAPIENTRY *qglMultMatrixf)(const GLfloat *m);
 172 //void (GLAPIENTRY *qglRotated)(GLdouble angle, GLdouble x, GLdouble y, GLdouble z);
 173 //void (GLAPIENTRY *qglRotatef)(GLfloat angle, GLfloat x, GLfloat y, GLfloat z);
 174 //void (GLAPIENTRY *qglScaled)(GLdouble x, GLdouble y, GLdouble z);
 175 //void (GLAPIENTRY *qglScalef)(GLfloat x, GLfloat y, GLfloat z);
 176 //void (GLAPIENTRY *qglTranslated)(GLdouble x, GLdouble y, GLdouble z);
 177 //void (GLAPIENTRY *qglTranslatef)(GLfloat x, GLfloat y, GLfloat z);
 178
 179 void (GLAPIENTRY *qglReadPixels)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, GLvoid *pixels);
 180
 181 void (GLAPIENTRY *qglStencilFunc)(GLenum func, GLint ref, GLuint mask);
 182 void (GLAPIENTRY *qglStencilMask)(GLuint mask);
 183 void (GLAPIENTRY *qglStencilOp)(GLenum fail, GLenum zfail, GLenum zpass);
 184 void (GLAPIENTRY *qglClearStencil)(GLint s);
 185
 186 //void (GLAPIENTRY *qglTexEnvf)(GLenum target, GLenum pname, GLfloat param);
 187 void (GLAPIENTRY *qglTexEnvi)(GLenum target, GLenum pname, GLint param);
 188 //void (GLAPIENTRY *qglTexParameterf)(GLenum target, GLenum pname, GLfloat param);
 189 //void (GLAPIENTRY *qglTexParameterfv)(GLenum target, GLenum pname, GLfloat *params);
 190 void (GLAPIENTRY *qglTexParameteri)(GLenum target, GLenum pname, GLint param);
 191
 192 void (GLAPIENTRY *qglGenTextures)(GLsizei n, GLuint *textures);
 193 void (GLAPIENTRY *qglDeleteTextures)(GLsizei n, const GLuint *textures);
 194 void (GLAPIENTRY *qglBindTexture)(GLenum target, GLuint texture);
 195 //void (GLAPIENTRY *qglPrioritizeTextures)(GLsizei n, const GLuint *textures, const GLclampf *priorities);
 196 //GLboolean (GLAPIENTRY *qglAreTexturesResident)(GLsizei n, const GLuint *textures, GLboolean *residences);
 197 GLboolean (GLAPIENTRY *qglIsTexture)(GLuint texture);
 198 //void (GLAPIENTRY *qglPixelStoref)(GLenum pname, GLfloat param);
 199 void (GLAPIENTRY *qglPixelStorei)(GLenum pname, GLint param);
 200
 201 void (GLAPIENTRY *qglTexImage1D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
 202 void (GLAPIENTRY *qglTexImage2D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
 203 void (GLAPIENTRY *qglTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLsizei width, GLenum format, GLenum type, const GLvoid *pixels);
 204 void (GLAPIENTRY *qglTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *pixels);
 205 void (GLAPIENTRY *qglCopyTexImage1D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLint border);
 206 void (GLAPIENTRY *qglCopyTexImage2D)(GLenum target, GLint level, GLenum internalformat, GLint x, GLint y, GLsizei width, GLsizei height, GLint border);
 207 void (GLAPIENTRY *qglCopyTexSubImage1D)(GLenum target, GLint level, GLint xoffset, GLint x, GLint y, GLsizei width);
 208 void (GLAPIENTRY *qglCopyTexSubImage2D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height);
 209
 210
 211 void (GLAPIENTRY *qglDrawRangeElementsEXT)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const GLvoid *indices);
 212
 213 //void (GLAPIENTRY *qglColorTableEXT)(int, int, int, int, int, const void *);
 214
 215 void (GLAPIENTRY *qglTexImage3D)(GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
 216 void (GLAPIENTRY *qglTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels);
 217 void (GLAPIENTRY *qglCopyTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
 218
 219 void (GLAPIENTRY *qglScissor)(GLint x, GLint y, GLsizei width, GLsizei height);
 220
 221 void (GLAPIENTRY *qglPolygonOffset)(GLfloat factor, GLfloat units);
 222
 223 int GL_CheckExtension(const char *name, const dllfunction_t *funcs, const char *disableparm, int silent)
 224 {
 225         int failed = false;
 226         const dllfunction_t *func;
 227
 228         Con_Printf("checking for %s...  ", name);
 229
 230         for (func = funcs;func && func->name;func++)
 231                 *func->funcvariable = NULL;
 232
 233         if (disableparm && COM_CheckParm(disableparm))
 234         {
 235                 Con_Printf("disabled by commandline\n");
 236                 return false;
 237         }
 238
 239         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)))
 240         {
 241                 for (func = funcs;func && func->name != NULL;func++)
 242                 {
 243                         // functions are cleared before all the extensions are evaluated
 244                         if (!(*func->funcvariable = (void *) GL_GetProcAddress(func->name)))
 245                         {
 246                                 if (!silent)
 247                                         Con_Printf("missing function \"%s\" - broken driver!\n", func->name);
 248                                 failed = true;
 249                         }
 250                 }
 251                 // delay the return so it prints all missing functions
 252                 if (failed)
 253                         return false;
 254                 Con_Printf("enabled\n");
 255                 return true;
 256         }
 257         else
 258         {
 259                 Con_Printf("not detected\n");
 260                 return false;
 261         }
 262 }
 263
 264 static dllfunction_t opengl110funcs[] =
 265 {
 266         {"glClearColor", (void **) &qglClearColor},
 267         {"glClear", (void **) &qglClear},
 268 //      {"glAlphaFunc", (void **) &qglAlphaFunc},
 269         {"glBlendFunc", (void **) &qglBlendFunc},
 270         {"glCullFace", (void **) &qglCullFace},
 271 //      {"glDrawBuffer", (void **) &qglDrawBuffer},
 272 //      {"glReadBuffer", (void **) &qglReadBuffer},
 273         {"glEnable", (void **) &qglEnable},
 274         {"glDisable", (void **) &qglDisable},
 275 //      {"glIsEnabled", (void **) &qglIsEnabled},
 276         {"glEnableClientState", (void **) &qglEnableClientState},
 277         {"glDisableClientState", (void **) &qglDisableClientState},
 278 //      {"glGetBooleanv", (void **) &qglGetBooleanv},
 279 //      {"glGetDoublev", (void **) &qglGetDoublev},
 280 //      {"glGetFloatv", (void **) &qglGetFloatv},
 281         {"glGetIntegerv", (void **) &qglGetIntegerv},
 282         {"glGetError", (void **) &qglGetError},
 283         {"glGetString", (void **) &qglGetString},
 284         {"glFinish", (void **) &qglFinish},
 285         {"glFlush", (void **) &qglFlush},
 286         {"glClearDepth", (void **) &qglClearDepth},
 287         {"glDepthFunc", (void **) &qglDepthFunc},
 288         {"glDepthMask", (void **) &qglDepthMask},
 289 //      {"glDepthRange", (void **) &qglDepthRange},
 290         {"glDrawElements", (void **) &qglDrawElements},
 291         {"glColorMask", (void **) &qglColorMask},
 292         {"glVertexPointer", (void **) &qglVertexPointer},
 293 //      {"glNormalPointer", (void **) &qglNormalPointer},
 294         {"glColorPointer", (void **) &qglColorPointer},
 295         {"glTexCoordPointer", (void **) &qglTexCoordPointer},
 296 //      {"glArrayElement", (void **) &qglArrayElement},
 297         {"glColor4f", (void **) &qglColor4f},
 298 //      {"glTexCoord2f", (void **) &qglTexCoord2f},
 299 //      {"glVertex2f", (void **) &qglVertex2f},
 300 //      {"glVertex3f", (void **) &qglVertex3f},
 301 //      {"glBegin", (void **) &qglBegin},
 302 //      {"glEnd", (void **) &qglEnd},
 303         {"glMatrixMode", (void **) &qglMatrixMode},
 304         {"glOrtho", (void **) &qglOrtho},
 305         {"glFrustum", (void **) &qglFrustum},
 306         {"glViewport", (void **) &qglViewport},
 307 //      {"glPushMatrix", (void **) &qglPushMatrix},
 308 //      {"glPopMatrix", (void **) &qglPopMatrix},
 309         {"glLoadIdentity", (void **) &qglLoadIdentity},
 310 //      {"glLoadMatrixd", (void **) &qglLoadMatrixd},
 311         {"glLoadMatrixf", (void **) &qglLoadMatrixf},
 312 //      {"glMultMatrixd", (void **) &qglMultMatrixd},
 313 //      {"glMultMatrixf", (void **) &qglMultMatrixf},
 314 //      {"glRotated", (void **) &qglRotated},
 315 //      {"glRotatef", (void **) &qglRotatef},
 316 //      {"glScaled", (void **) &qglScaled},
 317 //      {"glScalef", (void **) &qglScalef},
 318 //      {"glTranslated", (void **) &qglTranslated},
 319 //      {"glTranslatef", (void **) &qglTranslatef},
 320         {"glReadPixels", (void **) &qglReadPixels},
 321         {"glStencilFunc", (void **) &qglStencilFunc},
 322         {"glStencilMask", (void **) &qglStencilMask},
 323         {"glStencilOp", (void **) &qglStencilOp},
 324         {"glClearStencil", (void **) &qglClearStencil},
 325 //      {"glTexEnvf", (void **) &qglTexEnvf},
 326         {"glTexEnvi", (void **) &qglTexEnvi},
 327 //      {"glTexParameterf", (void **) &qglTexParameterf},
 328 //      {"glTexParameterfv", (void **) &qglTexParameterfv},
 329         {"glTexParameteri", (void **) &qglTexParameteri},
 330 //      {"glPixelStoref", (void **) &qglPixelStoref},
 331         {"glPixelStorei", (void **) &qglPixelStorei},
 332         {"glGenTextures", (void **) &qglGenTextures},
 333         {"glDeleteTextures", (void **) &qglDeleteTextures},
 334         {"glBindTexture", (void **) &qglBindTexture},
 335 //      {"glPrioritizeTextures", (void **) &qglPrioritizeTextures},
 336 //      {"glAreTexturesResident", (void **) &qglAreTexturesResident},
 337         {"glIsTexture", (void **) &qglIsTexture},
 338         {"glTexImage1D", (void **) &qglTexImage1D},
 339         {"glTexImage2D", (void **) &qglTexImage2D},
 340         {"glTexSubImage1D", (void **) &qglTexSubImage1D},
 341         {"glTexSubImage2D", (void **) &qglTexSubImage2D},
 342         {"glCopyTexImage1D", (void **) &qglCopyTexImage1D},
 343         {"glCopyTexImage2D", (void **) &qglCopyTexImage2D},
 344         {"glCopyTexSubImage1D", (void **) &qglCopyTexSubImage1D},
 345         {"glCopyTexSubImage2D", (void **) &qglCopyTexSubImage2D},
 346         {"glScissor", (void **) &qglScissor},
 347         {"glPolygonOffset", (void **) &qglPolygonOffset},
 348         {NULL, NULL}
 349 };
 350
 351 static dllfunction_t drawrangeelementsfuncs[] =
 352 {
 353         {"glDrawRangeElements", (void **) &qglDrawRangeElements},
 354         {NULL, NULL}
 355 };
 356
 357 static dllfunction_t drawrangeelementsextfuncs[] =
 358 {
 359         {"glDrawRangeElementsEXT", (void **) &qglDrawRangeElementsEXT},
 360         {NULL, NULL}
 361 };
 362
 363 static dllfunction_t multitexturefuncs[] =
 364 {
 365         //{"glMultiTexCoord2fARB", (void **) &qglMultiTexCoord2f},
 366         {"glActiveTextureARB", (void **) &qglActiveTexture},
 367         {"glClientActiveTextureARB", (void **) &qglClientActiveTexture},
 368         {NULL, NULL}
 369 };
 370
 371 static dllfunction_t compiledvertexarrayfuncs[] =
 372 {
 373         {"glLockArraysEXT", (void **) &qglLockArraysEXT},
 374         {"glUnlockArraysEXT", (void **) &qglUnlockArraysEXT},
 375         {NULL, NULL}
 376 };
 377
 378 static dllfunction_t texture3dextfuncs[] =
 379 {
 380         {"glTexImage3DEXT", (void **) &qglTexImage3D},
 381         {"glTexSubImage3DEXT", (void **) &qglTexSubImage3D},
 382         {"glCopyTexSubImage3DEXT", (void **) &qglCopyTexSubImage3D},
 383         {NULL, NULL}
 384 };
 385
 386 static dllfunction_t glxvarfuncs[] =
 387 {
 388         {"glXAllocateMemoryNV", (void **) &qglAllocateMemoryNV},
 389         {"glXFreeMemoryNV", (void **) &qglFreeMemoryNV},
 390         {"glVertexArrayRangeNV", (void **) &qglVertexArrayRangeNV},
 391         {"glFlushVertexArrayRangeNV", (void **) &qglFlushVertexArrayRangeNV},
 392         {NULL, NULL}
 393 };
 394
 395 static dllfunction_t wglvarfuncs[] =
 396 {
 397         {"wglAllocateMemoryNV", (void **) &qglAllocateMemoryNV},
 398         {"wglFreeMemoryNV", (void **) &qglFreeMemoryNV},
 399         {"glVertexArrayRangeNV", (void **) &qglVertexArrayRangeNV},
 400         {"glFlushVertexArrayRangeNV", (void **) &qglFlushVertexArrayRangeNV},
 401         {NULL, NULL}
 402 };
 403
 404
 405 void VID_CheckExtensions(void)
 406 {
 407         gl_stencil = vid_stencil.integer;
 408         gl_combine_extension = false;
 409         gl_dot3arb = false;
 410         gl_supportslockarrays = false;
 411         gl_textureunits = 1;
 412         gl_support_clamptoedge = false;
 413         gl_support_var = false;
 414         gl_support_var2 = false;
 415
 416         if (!GL_CheckExtension("OpenGL 1.1.0", opengl110funcs, NULL, false))
 417                 Sys_Error("OpenGL 1.1.0 functions not found\n");
 418
 419         Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
 420         Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
 421         Con_Printf ("GL_VERSION: %s\n", gl_version);
 422         Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
 423         Con_Printf ("%s_EXTENSIONS: %s\n", gl_platform, gl_platformextensions);
 424
 425         Con_Printf("Checking OpenGL extensions...\n");
 426
 427         if (!GL_CheckExtension("glDrawRangeElements", drawrangeelementsfuncs, "-nodrawrangeelements", true))
 428                 GL_CheckExtension("GL_EXT_draw_range_elements", drawrangeelementsextfuncs, "-nodrawrangeelements", false);
 429
 430         if (GL_CheckExtension("GL_ARB_multitexture", multitexturefuncs, "-nomtex", false))
 431         {
 432                 qglGetIntegerv(GL_MAX_TEXTURE_UNITS_ARB, &gl_textureunits);
 433                 gl_combine_extension = GL_CheckExtension("GL_ARB_texture_env_combine", NULL, "-nocombine", false) || GL_CheckExtension("GL_EXT_texture_env_combine", NULL, "-nocombine", false);
 434                 if (gl_combine_extension)
 435                         gl_dot3arb = GL_CheckExtension("GL_ARB_texture_env_dot3", NULL, "-nodot3", false);
 436         }
 437
 438         gl_texture3d = GL_CheckExtension("GL_EXT_texture3D", texture3dextfuncs, "-notexture3d", false);
 439         gl_texturecubemap = GL_CheckExtension("GL_ARB_texture_cube_map", NULL, "-nocubemap", false);
 440         gl_supportslockarrays = GL_CheckExtension("GL_EXT_compiled_vertex_array", compiledvertexarrayfuncs, "-nocva", false);
 441         gl_support_clamptoedge = GL_CheckExtension("GL_EXT_texture_edge_clamp", NULL, "-noedgeclamp", false) || GL_CheckExtension("GL_SGIS_texture_edge_clamp", NULL, "-noedgeclamp", false);
 442
 443         if (!strcmp(gl_platform, "GLX"))
 444                 gl_support_var = GL_CheckExtension("GL_NV_vertex_array_range", glxvarfuncs, "-novar", false);
 445         else if (!strcmp(gl_platform, "WGL"))
 446                 gl_support_var = GL_CheckExtension("GL_NV_vertex_array_range", wglvarfuncs, "-novar", false);
 447         if (gl_support_var)
 448                 gl_support_var2 = GL_CheckExtension("GL_NV_vertex_array_range2", NULL, "-novar2", false);
 449
 450         // we don't care if it's an extension or not, they are identical functions, so keep it simple in the rendering code
 451         if (qglDrawRangeElements == NULL)
 452                 qglDrawRangeElements = qglDrawRangeElementsEXT;
 453 }
 454
 455 int vid_vertexarrays_are_var = false;
 456 void *VID_AllocVertexArrays(mempool_t *pool, int size, int fast, float readfrequency, float writefrequency, float priority)
 457 {
 458         void *m;
 459         vid_vertexarrays_are_var = false;
 460         if (fast && qglAllocateMemoryNV)
 461         {
 462                 CHECKGLERROR
 463                 m = qglAllocateMemoryNV(size, readfrequency, writefrequency, priority);
 464                 CHECKGLERROR
 465                 if (m)
 466                 {
 467                         vid_vertexarrays_are_var = true;
 468                         return m;
 469                 }
 470         }
 471         return Mem_Alloc(pool, size);
 472 }
 473
 474 void VID_FreeVertexArrays(void *pointer)
 475 {
 476         if (vid_vertexarrays_are_var)
 477         {
 478                 CHECKGLERROR
 479                 qglFreeMemoryNV(pointer);
 480                 CHECKGLERROR
 481         }
 482         else
 483                 Mem_Free(pointer);
 484         vid_vertexarrays_are_var = false;
 485 }
 486
 487 void Force_CenterView_f (void)
 488 {
 489         cl.viewangles[PITCH] = 0;
 490 }
 491
 492 void IN_PreMove(void)
 493 {
 494 }
 495
 496 void CL_AdjustAngles(void);
 497 void IN_PostMove(void)
 498 {
 499         // clamp after the move as well to prevent messed up rendering angles
 500         CL_AdjustAngles();
 501 }
 502
 503 void IN_Mouse(usercmd_t *cmd, float mx, float my)
 504 {
 505         int mouselook = (in_mlook.state & 1) || freelook.integer;
 506         float mouse_x, mouse_y;
 507         static float old_mouse_x = 0, old_mouse_y = 0;
 508
 509         if (m_filter.integer)
 510         {
 511                 mouse_x = (mx + old_mouse_x) * 0.5;
 512                 mouse_y = (my + old_mouse_y) * 0.5;
 513         }
 514         else
 515         {
 516                 mouse_x = mx;
 517                 mouse_y = my;
 518         }
 519
 520         old_mouse_x = mx;
 521         old_mouse_y = my;
 522
 523         // LordHavoc: viewzoom affects mouse sensitivity for sniping
 524         mouse_x *= sensitivity.value * cl.viewzoom;
 525         mouse_y *= sensitivity.value * cl.viewzoom;
 526
 527         // Add mouse X/Y movement to cmd
 528         if ((in_strafe.state & 1) || (lookstrafe.integer && mouselook))
 529                 cmd->sidemove += m_side.value * mouse_x;
 530         else
 531                 cl.viewangles[YAW] -= m_yaw.value * mouse_x;
 532
 533         if (mouselook)
 534                 V_StopPitchDrift();
 535
 536         if (mouselook && !(in_strafe.state & 1))
 537                 cl.viewangles[PITCH] += m_pitch.value * mouse_y;
 538         else
 539         {
 540                 if ((in_strafe.state & 1) && noclip_anglehack)
 541                         cmd->upmove -= m_forward.value * mouse_y;
 542                 else
 543                         cmd->forwardmove -= m_forward.value * mouse_y;
 544         }
 545 }
 546
 547 static float cachegamma, cachebrightness, cachecontrast, cacheblack[3], cachegrey[3], cachewhite[3];
 548 static int cacheoverbrightbits = -1, cachecolorenable, cachehwgamma;
 549 #define BOUNDCVAR(cvar, m1, m2) c = &(cvar);f = bound(m1, c->value, m2);if (c->value != f) Cvar_SetValueQuick(c, f);
 550 void VID_UpdateGamma(qboolean force)
 551 {
 552         cvar_t *c;
 553         float f;
 554
 555         // LordHavoc: don't mess with gamma tables if running dedicated
 556         if (cls.state == ca_dedicated)
 557                 return;
 558
 559         if (!force
 560          && vid_usinghwgamma == (vid_allowhwgamma && v_hwgamma.integer)
 561          && v_overbrightbits.integer == cacheoverbrightbits
 562          && v_gamma.value == cachegamma
 563          && v_contrast.value == cachecontrast
 564          && v_brightness.value == cachebrightness
 565          && cachecolorenable == v_color_enable.integer
 566          && cacheblack[0] == v_color_black_r.value
 567          && cacheblack[1] == v_color_black_g.value
 568          && cacheblack[2] == v_color_black_b.value
 569          && cachegrey[0] == v_color_grey_r.value
 570          && cachegrey[1] == v_color_grey_g.value
 571          && cachegrey[2] == v_color_grey_b.value
 572          && cachewhite[0] == v_color_white_r.value
 573          && cachewhite[1] == v_color_white_g.value
 574          && cachewhite[2] == v_color_white_b.value)
 575                 return;
 576
 577         if (vid_allowhwgamma && v_hwgamma.integer)
 578         {
 579                 if (!vid_usinghwgamma)
 580                 {
 581                         vid_usinghwgamma = true;
 582                         vid_hardwaregammasupported = VID_GetGamma(vid_systemgammaramps);
 583                 }
 584
 585                 BOUNDCVAR(v_gamma, 0.1, 5);cachegamma = v_gamma.value;
 586                 BOUNDCVAR(v_contrast, 1, 5);cachecontrast = v_contrast.value;
 587                 BOUNDCVAR(v_brightness, 0, 0.8);cachebrightness = v_brightness.value;
 588                 BOUNDCVAR(v_color_black_r, 0, 0.8);cacheblack[0] = v_color_black_r.value;
 589                 BOUNDCVAR(v_color_black_g, 0, 0.8);cacheblack[1] = v_color_black_g.value;
 590                 BOUNDCVAR(v_color_black_b, 0, 0.8);cacheblack[2] = v_color_black_b.value;
 591                 BOUNDCVAR(v_color_grey_r, 0, 0.95);cachegrey[0] = v_color_grey_r.value;
 592                 BOUNDCVAR(v_color_grey_g, 0, 0.95);cachegrey[1] = v_color_grey_g.value;
 593                 BOUNDCVAR(v_color_grey_b, 0, 0.95);cachegrey[2] = v_color_grey_b.value;
 594                 BOUNDCVAR(v_color_white_r, 1, 5);cachewhite[0] = v_color_white_r.value;
 595                 BOUNDCVAR(v_color_white_g, 1, 5);cachewhite[1] = v_color_white_g.value;
 596                 BOUNDCVAR(v_color_white_b, 1, 5);cachewhite[2] = v_color_white_b.value;
 597                 cachecolorenable = v_color_enable.integer;
 598                 cacheoverbrightbits = v_overbrightbits.integer;
 599                 cachehwgamma = v_hwgamma.integer;
 600
 601                 if (cachecolorenable)
 602                 {
 603                         BuildGammaTable16((float) (1 << cacheoverbrightbits), invpow(0.5, 1 - cachegrey[0]), cachewhite[0], cacheblack[0], vid_gammaramps);
 604                         BuildGammaTable16((float) (1 << cacheoverbrightbits), invpow(0.5, 1 - cachegrey[1]), cachewhite[1], cacheblack[1], vid_gammaramps + 256);
 605                         BuildGammaTable16((float) (1 << cacheoverbrightbits), invpow(0.5, 1 - cachegrey[2]), cachewhite[2], cacheblack[2], vid_gammaramps + 512);
 606                 }
 607                 else
 608                 {
 609                         BuildGammaTable16((float) (1 << cacheoverbrightbits), cachegamma, cachecontrast, cachebrightness, vid_gammaramps);
 610                         BuildGammaTable16((float) (1 << cacheoverbrightbits), cachegamma, cachecontrast, cachebrightness, vid_gammaramps + 256);
 611                         BuildGammaTable16((float) (1 << cacheoverbrightbits), cachegamma, cachecontrast, cachebrightness, vid_gammaramps + 512);
 612                 }
 613
 614                 vid_hardwaregammasupported = VID_SetGamma(vid_gammaramps);
 615         }
 616         else
 617         {
 618                 if (vid_usinghwgamma)
 619                 {
 620                         vid_usinghwgamma = false;
 621                         vid_hardwaregammasupported = VID_SetGamma(vid_systemgammaramps);
 622                 }
 623         }
 624 }
 625
 626 void VID_RestoreSystemGamma(void)
 627 {
 628         if (vid_usinghwgamma)
 629         {
 630                 vid_usinghwgamma = false;
 631                 VID_SetGamma(vid_systemgammaramps);
 632         }
 633 }
 634
 635 void VID_Shared_Init(void)
 636 {
 637         Cvar_RegisterVariable(&v_gamma);
 638         Cvar_RegisterVariable(&v_brightness);
 639         Cvar_RegisterVariable(&v_contrast);
 640
 641         Cvar_RegisterVariable(&v_color_enable);
 642         Cvar_RegisterVariable(&v_color_black_r);
 643         Cvar_RegisterVariable(&v_color_black_g);
 644         Cvar_RegisterVariable(&v_color_black_b);
 645         Cvar_RegisterVariable(&v_color_grey_r);
 646         Cvar_RegisterVariable(&v_color_grey_g);
 647         Cvar_RegisterVariable(&v_color_grey_b);
 648         Cvar_RegisterVariable(&v_color_white_r);
 649         Cvar_RegisterVariable(&v_color_white_g);
 650         Cvar_RegisterVariable(&v_color_white_b);
 651
 652         Cvar_RegisterVariable(&v_hwgamma);
 653         Cvar_RegisterVariable(&v_overbrightbits);
 654
 655         Cvar_RegisterVariable(&vid_fullscreen);
 656         Cvar_RegisterVariable(&vid_width);
 657         Cvar_RegisterVariable(&vid_height);
 658         Cvar_RegisterVariable(&vid_bitsperpixel);
 659         Cvar_RegisterVariable(&vid_stencil);
 660         Cvar_RegisterVariable(&vid_mouse);
 661         Cvar_RegisterVariable(&gl_combine);
 662         Cvar_RegisterVariable(&in_pitch_min);
 663         Cvar_RegisterVariable(&in_pitch_max);
 664         Cvar_RegisterVariable(&m_filter);
 665         Cmd_AddCommand("force_centerview", Force_CenterView_f);
 666         Cmd_AddCommand("vid_restart", VID_Restart_f);
 667 }
 668
 669 int current_vid_fullscreen;
 670 int current_vid_width;
 671 int current_vid_height;
 672 int current_vid_bitsperpixel;
 673 int current_vid_stencil;
 674 extern int VID_InitMode (int fullscreen, int width, int height, int bpp, int stencil);
 675 int VID_Mode(int fullscreen, int width, int height, int bpp, int stencil)
 676 {
 677         Con_Printf("Video: %s %dx%dx%d %s\n", fullscreen ? "fullscreen" : "window", width, height, bpp, stencil ? "with stencil" : "without stencil");
 678         if (VID_InitMode(fullscreen, width, height, bpp, stencil))
 679         {
 680                 current_vid_fullscreen = fullscreen;
 681                 current_vid_width = width;
 682                 current_vid_height = height;
 683                 current_vid_bitsperpixel = bpp;
 684                 current_vid_stencil = stencil;
 685                 Cvar_SetValueQuick(&vid_fullscreen, fullscreen);
 686                 Cvar_SetValueQuick(&vid_width, width);
 687                 Cvar_SetValueQuick(&vid_height, height);
 688                 Cvar_SetValueQuick(&vid_bitsperpixel, bpp);
 689                 Cvar_SetValueQuick(&vid_stencil, stencil);
 690                 return true;
 691         }
 692         else
 693                 return false;
 694 }
 695
 696 static void VID_OpenSystems(void)
 697 {
 698         R_Modules_Start();
 699         S_Open();
 700         CDAudio_Open();
 701 }
 702
 703 static void VID_CloseSystems(void)
 704 {
 705         CDAudio_Close();
 706         S_Close();
 707         R_Modules_Shutdown();
 708 }
 709
 710 void VID_Restart_f(void)
 711 {
 712         Con_Printf("VID_Restart: changing from %s %dx%dx%dbpp %s, to %s %dx%dx%dbpp %s.\n",
 713                 current_vid_fullscreen ? "fullscreen" : "window", current_vid_width, current_vid_height, current_vid_bitsperpixel, current_vid_stencil ? "with stencil" : "without stencil",
 714                 vid_fullscreen.integer ? "fullscreen" : "window", vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, vid_stencil.integer ? "with stencil" : "without stencil");
 715         VID_Close();
 716         if (!VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, vid_stencil.integer))
 717         {
 718                 Con_Printf("Video mode change failed\n");
 719                 if (!VID_Mode(current_vid_fullscreen, current_vid_width, current_vid_height, current_vid_bitsperpixel, current_vid_stencil))
 720                         Sys_Error("Unable to restore to last working video mode\n");
 721         }
 722         VID_OpenSystems();
 723 }
 724
 725 int vid_commandlinecheck = true;
 726 void VID_Open(void)
 727 {
 728         int i, width, height;
 729         if (vid_commandlinecheck)
 730         {
 731                 // interpret command-line parameters
 732                 vid_commandlinecheck = false;
 733                 if ((i = COM_CheckParm("-window")) != 0)
 734                         Cvar_SetValueQuick(&vid_fullscreen, false);
 735                 if ((i = COM_CheckParm("-fullscreen")) != 0)
 736                         Cvar_SetValueQuick(&vid_fullscreen, true);
 737                 width = 0;
 738                 height = 0;
 739                 if ((i = COM_CheckParm("-width")) != 0)
 740                         width = atoi(com_argv[i+1]);
 741                 if ((i = COM_CheckParm("-height")) != 0)
 742                         height = atoi(com_argv[i+1]);
 743                 if (width == 0)
 744                         width = height * 4 / 3;
 745                 if (height == 0)
 746                         height = width * 3 / 4;
 747                 if (width)
 748                         Cvar_SetValueQuick(&vid_width, width);
 749                 if (height)
 750                         Cvar_SetValueQuick(&vid_height, height);
 751                 if ((i = COM_CheckParm("-bpp")) != 0)
 752                         Cvar_SetQuick(&vid_bitsperpixel, com_argv[i+1]);
 753                 if ((i = COM_CheckParm("-nostencil")) != 0)
 754                         Cvar_SetValueQuick(&vid_stencil, 0);
 755                 if ((i = COM_CheckParm("-stencil")) != 0)
 756                         Cvar_SetValueQuick(&vid_stencil, 1);
 757         }
 758
 759         if (vid_stencil.integer && vid_bitsperpixel.integer != 32)
 760         {
 761                 Con_Printf("vid_stencil not allowed without vid_bitsperpixel 32, turning off vid_stencil\n");
 762                 Cvar_SetValueQuick(&vid_stencil, 0);
 763         }
 764
 765         Con_Printf("Starting video system\n");
 766         if (!VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, vid_stencil.integer))
 767         {
 768                 Con_Printf("Desired video mode fail, trying fallbacks...\n");
 769                 if (!vid_stencil.integer || !VID_Mode(vid_fullscreen.integer, vid_width.integer, vid_height.integer, vid_bitsperpixel.integer, false))
 770                 {
 771                         if (vid_fullscreen.integer)
 772                         {
 773                                 if (!VID_Mode(true, 640, 480, 16, false))
 774                                         if (!VID_Mode(false, 640, 480, 16, false))
 775                                                 Sys_Error("Video modes failed\n");
 776                         }
 777                         else
 778                                 Sys_Error("Windowed video failed\n");
 779                 }
 780         }
 781         VID_OpenSystems();
 782 }
 783
 784 void VID_Close(void)
 785 {
 786         VID_CloseSystems();
 787         VID_Shutdown();
 788 }
 789