xorg-server-1.4/GL/glx/glxscreens.c

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 **
  34 */
  35
  36 #ifdef HAVE_DIX_CONFIG_H
  37 #include <dix-config.h>
  38 #endif
  39
  40 #include <string.h>
  41 #include <windowstr.h>
  42 #include <os.h>
  43
  44 #include "glxserver.h"
  45 #include "glxutil.h"
  46 #include "glxext.h"
  47
  48 const char GLServerVersion[] = "1.4";
  49 static const char GLServerExtensions[] =
  50                         "GL_ARB_depth_texture "
  51                         "GL_ARB_draw_buffers "
  52                         "GL_ARB_fragment_program "
  53                         "GL_ARB_fragment_program_shadow "
  54                         "GL_ARB_imaging "
  55                         "GL_ARB_multisample "
  56                         "GL_ARB_multitexture "
  57                         "GL_ARB_occlusion_query "
  58                         "GL_ARB_point_parameters "
  59                         "GL_ARB_point_sprite "
  60                         "GL_ARB_shadow "
  61                         "GL_ARB_shadow_ambient "
  62                         "GL_ARB_texture_border_clamp "
  63                         "GL_ARB_texture_compression "
  64                         "GL_ARB_texture_cube_map "
  65                         "GL_ARB_texture_env_add "
  66                         "GL_ARB_texture_env_combine "
  67                         "GL_ARB_texture_env_crossbar "
  68                         "GL_ARB_texture_env_dot3 "
  69                         "GL_ARB_texture_mirrored_repeat "
  70                         "GL_ARB_texture_non_power_of_two "
  71                         "GL_ARB_transpose_matrix "
  72                         "GL_ARB_vertex_program "
  73                         "GL_ARB_window_pos "
  74                         "GL_EXT_abgr "
  75                         "GL_EXT_bgra "
  76                         "GL_EXT_blend_color "
  77                         "GL_EXT_blend_equation_separate "
  78                         "GL_EXT_blend_func_separate "
  79                         "GL_EXT_blend_logic_op "
  80                         "GL_EXT_blend_minmax "
  81                         "GL_EXT_blend_subtract "
  82                         "GL_EXT_clip_volume_hint "
  83                         "GL_EXT_copy_texture "
  84                         "GL_EXT_draw_range_elements "
  85                         "GL_EXT_fog_coord "
  86                         "GL_EXT_framebuffer_object "
  87                         "GL_EXT_multi_draw_arrays "
  88                         "GL_EXT_packed_pixels "
  89                         "GL_EXT_paletted_texture "
  90                         "GL_EXT_point_parameters "
  91                         "GL_EXT_polygon_offset "
  92                         "GL_EXT_rescale_normal "
  93                         "GL_EXT_secondary_color "
  94                         "GL_EXT_separate_specular_color "
  95                         "GL_EXT_shadow_funcs "
  96                         "GL_EXT_shared_texture_palette "
  97                         "GL_EXT_stencil_two_side "
  98                         "GL_EXT_stencil_wrap "
  99                         "GL_EXT_subtexture "
 100                         "GL_EXT_texture "
 101                         "GL_EXT_texture3D "
 102                         "GL_EXT_texture_compression_dxt1 "
 103                         "GL_EXT_texture_compression_s3tc "
 104                         "GL_EXT_texture_edge_clamp "
 105                         "GL_EXT_texture_env_add "
 106                         "GL_EXT_texture_env_combine "
 107                         "GL_EXT_texture_env_dot3 "
 108                         "GL_EXT_texture_filter_ansiotropic "
 109                         "GL_EXT_texture_lod "
 110                         "GL_EXT_texture_lod_bias "
 111                         "GL_EXT_texture_mirror_clamp "
 112                         "GL_EXT_texture_object "
 113                         "GL_EXT_texture_rectangle "
 114                         "GL_EXT_vertex_array "
 115                         "GL_3DFX_texture_compression_FXT1 "
 116                         "GL_APPLE_packed_pixels "
 117                         "GL_ATI_draw_buffers "
 118                         "GL_ATI_texture_env_combine3 "
 119                         "GL_ATI_texture_mirror_once "
 120                         "GL_HP_occlusion_test "
 121                         "GL_IBM_texture_mirrored_repeat "
 122                         "GL_INGR_blend_func_separate "
 123                         "GL_MESA_pack_invert "
 124                         "GL_MESA_ycbcr_texture "
 125                         "GL_NV_blend_square "
 126                         "GL_NV_depth_clamp "
 127                         "GL_NV_fog_distance "
 128                         "GL_NV_fragment_program "
 129                         "GL_NV_fragment_program_option "
 130                         "GL_NV_fragment_program2 "
 131                         "GL_NV_light_max_exponent "
 132                         "GL_NV_multisample_filter_hint "
 133                         "GL_NV_point_sprite "
 134                         "GL_NV_texgen_reflection "
 135                         "GL_NV_texture_compression_vtc "
 136                         "GL_NV_texture_env_combine4 "
 137                         "GL_NV_texture_expand_normal "
 138                         "GL_NV_texture_rectangle "
 139                         "GL_NV_vertex_program "
 140                         "GL_NV_vertex_program1_1 "
 141                         "GL_NV_vertex_program2 "
 142                         "GL_NV_vertex_program2_option "
 143                         "GL_NV_vertex_program3 "
 144                         "GL_OES_compressed_paletted_texture "
 145                         "GL_SGI_color_matrix "
 146                         "GL_SGI_color_table "
 147                         "GL_SGIS_generate_mipmap "
 148                         "GL_SGIS_multisample "
 149                         "GL_SGIS_point_parameters "
 150                         "GL_SGIS_texture_border_clamp "
 151                         "GL_SGIS_texture_edge_clamp "
 152                         "GL_SGIS_texture_lod "
 153                         "GL_SGIX_depth_texture "
 154                         "GL_SGIX_shadow "
 155                         "GL_SGIX_shadow_ambient "
 156                         "GL_SUN_slice_accum "
 157                         ;
 158
 159 /*
 160 ** We have made the simplifying assuption that the same extensions are
 161 ** supported across all screens in a multi-screen system.
 162 */
 163 static char GLXServerVendorName[] = "SGI";
 164 static char GLXServerVersion[] = "1.2";
 165 static char GLXServerExtensions[] =
 166                         "GLX_ARB_multisample "
 167                         "GLX_EXT_visual_info "
 168                         "GLX_EXT_visual_rating "
 169                         "GLX_EXT_import_context "
 170                         "GLX_EXT_texture_from_pixmap "
 171                         "GLX_OML_swap_method "
 172                         "GLX_SGI_make_current_read "
 173 #ifndef __DARWIN__
 174                         "GLX_SGIS_multisample "
 175                         "GLX_SGIX_hyperpipe "
 176                         "GLX_SGIX_swap_barrier "
 177 #endif
 178                         "GLX_SGIX_fbconfig "
 179                         "GLX_MESA_copy_sub_buffer "
 180                         ;
 181
 182 __GLXscreen **__glXActiveScreens;
 183
 184 __GLXSwapBarrierExtensionFuncs *__glXSwapBarrierFuncs = NULL;
 185 static int __glXNumSwapBarrierFuncs = 0;
 186 __GLXHyperpipeExtensionFuncs *__glXHyperpipeFuncs = NULL;
 187 static int __glXNumHyperpipeFuncs = 0;
 188
 189 __GLXscreen *__glXgetActiveScreen(int num) {
 190         return __glXActiveScreens[num];
 191 }
 192
 193
 194 /*
 195 ** This hook gets called when a window moves or changes size.
 196 */
 197 static Bool PositionWindow(WindowPtr pWin, int x, int y)
 198 {
 199     ScreenPtr pScreen;
 200     __GLXcontext *glxc;
 201     __GLXdrawable *glxPriv;
 202     Bool ret;
 203
 204     /*
 205     ** Call wrapped position window routine
 206     */
 207     pScreen = pWin->drawable.pScreen;
 208     pScreen->PositionWindow =
 209         __glXActiveScreens[pScreen->myNum]->WrappedPositionWindow;
 210     ret = (*pScreen->PositionWindow)(pWin, x, y);
 211     pScreen->PositionWindow = PositionWindow;
 212
 213     /*
 214     ** Tell all contexts rendering into this window that the window size
 215     ** has changed.
 216     */
 217     glxPriv = (__GLXdrawable *) LookupIDByType(pWin->drawable.id,
 218                                                __glXDrawableRes);
 219     if (glxPriv == NULL) {
 220         /*
 221         ** This window is not being used by the OpenGL.
 222         */
 223         return ret;
 224     }
 225
 226     /*
 227     ** resize the drawable
 228     */
 229     /* first change the drawable size */
 230     if (glxPriv->resize(glxPriv) == GL_FALSE) {
 231         /* resize failed! */
 232         /* XXX: what can we possibly do here? */
 233         ret = False;
 234     }
 235
 236     /* mark contexts as needing resize */
 237
 238     for (glxc = glxPriv->drawGlxc; glxc; glxc = glxc->nextDrawPriv) {
 239         glxc->pendingState |= __GLX_PENDING_RESIZE;
 240     }
 241
 242     for (glxc = glxPriv->readGlxc; glxc; glxc = glxc->nextReadPriv) {
 243         glxc->pendingState |= __GLX_PENDING_RESIZE;
 244     }
 245
 246     return ret;
 247 }
 248
 249 /*
 250  * If your DDX driver wants to register support for swap barriers or hyperpipe
 251  * topology, it should call __glXHyperpipeInit() or __glXSwapBarrierInit()
 252  * with a dispatch table of functions to handle the requests.   In the XFree86
 253  * DDX, for example, you would call these near the bottom of the driver's
 254  * ScreenInit method, after DRI has been initialized.
 255  *
 256  * This should be replaced with a better method when we teach the server how
 257  * to load DRI drivers.
 258  */
 259
 260 void __glXHyperpipeInit(int screen, __GLXHyperpipeExtensionFuncs *funcs)
 261 {
 262     if (__glXNumHyperpipeFuncs < screen + 1) {
 263         __glXHyperpipeFuncs = xrealloc(__glXHyperpipeFuncs,
 264                                            (screen+1) * sizeof(__GLXHyperpipeExtensionFuncs));
 265         __glXNumHyperpipeFuncs = screen + 1;
 266     }
 267
 268     __glXHyperpipeFuncs[screen].queryHyperpipeNetworkFunc =
 269         *funcs->queryHyperpipeNetworkFunc;
 270     __glXHyperpipeFuncs[screen].queryHyperpipeConfigFunc =
 271         *funcs->queryHyperpipeConfigFunc;
 272     __glXHyperpipeFuncs[screen].destroyHyperpipeConfigFunc =
 273         *funcs->destroyHyperpipeConfigFunc;
 274     __glXHyperpipeFuncs[screen].hyperpipeConfigFunc =
 275         *funcs->hyperpipeConfigFunc;
 276 }
 277
 278 void __glXSwapBarrierInit(int screen, __GLXSwapBarrierExtensionFuncs *funcs)
 279 {
 280     if (__glXNumSwapBarrierFuncs < screen + 1) {
 281         __glXSwapBarrierFuncs = xrealloc(__glXSwapBarrierFuncs,
 282                                            (screen+1) * sizeof(__GLXSwapBarrierExtensionFuncs));
 283         __glXNumSwapBarrierFuncs = screen + 1;
 284     }
 285
 286     __glXSwapBarrierFuncs[screen].bindSwapBarrierFunc =
 287         funcs->bindSwapBarrierFunc;
 288     __glXSwapBarrierFuncs[screen].queryMaxSwapBarriersFunc =
 289         funcs->queryMaxSwapBarriersFunc;
 290 }
 291
 292 static __GLXprovider *__glXProviderStack;
 293
 294 void GlxPushProvider(__GLXprovider *provider)
 295 {
 296     provider->next = __glXProviderStack;
 297     __glXProviderStack = provider;
 298 }
 299
 300 void __glXScreenInit(__GLXscreen *screen, ScreenPtr pScreen)
 301 {
 302     screen->pScreen       = pScreen;
 303     screen->GLextensions  = xstrdup(GLServerExtensions);
 304     screen->GLXvendor     = xstrdup(GLXServerVendorName);
 305     screen->GLXversion    = xstrdup(GLXServerVersion);
 306     screen->GLXextensions = xstrdup(GLXServerExtensions);
 307
 308     screen->WrappedPositionWindow = pScreen->PositionWindow;
 309     pScreen->PositionWindow = PositionWindow;
 310
 311     __glXScreenInitVisuals(screen);
 312 }
 313
 314 void
 315 __glXScreenDestroy(__GLXscreen *screen)
 316 {
 317     xfree(screen->GLXvendor);
 318     xfree(screen->GLXversion);
 319     xfree(screen->GLXextensions);
 320     xfree(screen->GLextensions);
 321 }
 322
 323 void __glXInitScreens(void)
 324 {
 325     GLint i;
 326     ScreenPtr pScreen;
 327     __GLXprovider *p;
 328     size_t size;
 329
 330     /*
 331     ** This alloc has to work or else the server might as well core dump.
 332     */
 333     size = screenInfo.numScreens * sizeof(__GLXscreen *);
 334     __glXActiveScreens = xalloc(size);
 335     memset(__glXActiveScreens, 0, size);
 336
 337     for (i = 0; i < screenInfo.numScreens; i++) {
 338         pScreen = screenInfo.screens[i];
 339
 340         for (p = __glXProviderStack; p != NULL; p = p->next) {
 341             __glXActiveScreens[i] = p->screenProbe(pScreen);
 342             if (__glXActiveScreens[i] != NULL) {
 343                 LogMessage(X_INFO,
 344                            "GLX: Initialized %s GL provider for screen %d\n",
 345                            p->name, i);
 346                 break;
 347             }
 348         }
 349     }
 350 }
 351
 352 void __glXResetScreens(void)
 353 {
 354   int i;
 355
 356   for (i = 0; i < screenInfo.numScreens; i++)
 357       if (__glXActiveScreens[i])
 358           __glXActiveScreens[i]->destroy(__glXActiveScreens[i]);
 359
 360     xfree(__glXActiveScreens);
 361     xfree(__glXHyperpipeFuncs);
 362     xfree(__glXSwapBarrierFuncs);
 363     __glXNumHyperpipeFuncs = 0;
 364     __glXNumSwapBarrierFuncs = 0;
 365     __glXHyperpipeFuncs = NULL;
 366     __glXSwapBarrierFuncs = NULL;
 367     __glXActiveScreens = NULL;
 368 }