src/glx/x11/dri2_glx.c

   1 /* -*- mode: c; tab-width: 3; indent-tabs-mode: nil; c-basic-offset: 3; coding: utf-8-unix -*- */
   2 /*
   3  * Copyright © 2008 Red Hat, Inc.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Soft-
   7  * ware"), to deal in the Software without restriction, including without
   8  * limitation the rights to use, copy, modify, merge, publish, distribute,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, provided that the above copyright
  11  * notice(s) and this permission notice appear in all copies of the Soft-
  12  * ware and that both the above copyright notice(s) and this permission
  13  * notice appear in supporting documentation.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  16  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
  17  * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
  18  * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
  19  * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
  20  * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
  21  * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
  22  * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
  23  * MANCE OF THIS SOFTWARE.
  24  *
  25  * Except as contained in this notice, the name of a copyright holder shall
  26  * not be used in advertising or otherwise to promote the sale, use or
  27  * other dealings in this Software without prior written authorization of
  28  * the copyright holder.
  29  *
  30  * Authors:
  31  *   Kristian Høgsberg (krh@redhat.com)
  32  */
  33
  34 #ifdef GLX_DIRECT_RENDERING
  35
  36 #include <X11/Xlib.h>
  37 #include <X11/extensions/Xfixes.h>
  38 #include <X11/extensions/Xdamage.h>
  39 #include "glxclient.h"
  40 #include "glcontextmodes.h"
  41 #include "xf86dri.h"
  42 #include "sarea.h"
  43 #include <dlfcn.h>
  44 #include <sys/types.h>
  45 #include <sys/mman.h>
  46 #include "xf86drm.h"
  47 #include "dri2.h"
  48 #include "dri_common.h"
  49
  50 typedef struct __GLXDRIdisplayPrivateRec __GLXDRIdisplayPrivate;
  51 typedef struct __GLXDRIcontextPrivateRec __GLXDRIcontextPrivate;
  52 typedef struct __GLXDRIdrawablePrivateRec __GLXDRIdrawablePrivate;
  53
  54 struct __GLXDRIdisplayPrivateRec {
  55     __GLXDRIdisplay base;
  56
  57     /*
  58     ** XFree86-DRI version information
  59     */
  60     int driMajor;
  61     int driMinor;
  62     int driPatch;
  63 };
  64
  65 struct __GLXDRIcontextPrivateRec {
  66     __GLXDRIcontext base;
  67     __DRIcontext *driContext;
  68     __GLXscreenConfigs *psc;
  69 };
  70
  71 struct __GLXDRIdrawablePrivateRec {
  72     __GLXDRIdrawable base;
  73     __DRIbuffer buffers[5];
  74     int bufferCount;
  75     int width, height;
  76 };
  77
  78 static void dri2DestroyContext(__GLXDRIcontext *context,
  79                               __GLXscreenConfigs *psc, Display *dpy)
  80 {
  81     __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
  82     const __DRIcoreExtension *core = pcp->psc->core;
  83
  84     (*core->destroyContext)(pcp->driContext);
  85
  86     Xfree(pcp);
  87 }
  88
  89 static Bool dri2BindContext(__GLXDRIcontext *context,
  90                            __GLXDRIdrawable *draw, __GLXDRIdrawable *read)
  91 {
  92     __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
  93     const __DRIcoreExtension *core = pcp->psc->core;
  94
  95     return (*core->bindContext)(pcp->driContext,
  96                                 draw->driDrawable,
  97                                 read->driDrawable);
  98 }
  99
 100 static void dri2UnbindContext(__GLXDRIcontext *context)
 101 {
 102     __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
 103     const __DRIcoreExtension *core = pcp->psc->core;
 104
 105     (*core->unbindContext)(pcp->driContext);
 106 }
 107
 108 static __GLXDRIcontext *dri2CreateContext(__GLXscreenConfigs *psc,
 109                                          const __GLcontextModes *mode,
 110                                          GLXContext gc,
 111                                          GLXContext shareList, int renderType)
 112 {
 113     __GLXDRIcontextPrivate *pcp, *pcp_shared;
 114     __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
 115     __DRIcontext *shared = NULL;
 116
 117     if (shareList) {
 118         pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext;
 119         shared = pcp_shared->driContext;
 120     }
 121
 122     pcp = Xmalloc(sizeof *pcp);
 123     if (pcp == NULL)
 124         return NULL;
 125
 126     pcp->psc = psc;
 127     pcp->driContext =
 128         (*psc->dri2->createNewContext)(psc->__driScreen,
 129                                        config->driConfig, shared, pcp);
 130     gc->__driContext = pcp->driContext;
 131
 132     if (pcp->driContext == NULL) {
 133         Xfree(pcp);
 134         return NULL;
 135     }
 136
 137     pcp->base.destroyContext = dri2DestroyContext;
 138     pcp->base.bindContext = dri2BindContext;
 139     pcp->base.unbindContext = dri2UnbindContext;
 140
 141     return &pcp->base;
 142 }
 143
 144 static void dri2DestroyDrawable(__GLXDRIdrawable *pdraw)
 145 {
 146     const __DRIcoreExtension *core = pdraw->psc->core;
 147
 148     (*core->destroyDrawable)(pdraw->driDrawable);
 149     DRI2DestroyDrawable(pdraw->psc->dpy, pdraw->drawable);
 150     Xfree(pdraw);
 151 }
 152
 153 static __GLXDRIdrawable *dri2CreateDrawable(__GLXscreenConfigs *psc,
 154                                             XID xDrawable,
 155                                             GLXDrawable drawable,
 156                                             const __GLcontextModes *modes)
 157 {
 158     __GLXDRIdrawablePrivate *pdraw;
 159     __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
 160
 161     pdraw = Xmalloc(sizeof(*pdraw));
 162     if (!pdraw)
 163         return NULL;
 164
 165     pdraw->base.destroyDrawable = dri2DestroyDrawable;
 166     pdraw->base.xDrawable = xDrawable;
 167     pdraw->base.drawable = drawable;
 168     pdraw->base.psc = psc;
 169
 170     DRI2CreateDrawable(psc->dpy, xDrawable);
 171
 172     /* Create a new drawable */
 173     pdraw->base.driDrawable =
 174         (*psc->dri2->createNewDrawable)(psc->__driScreen,
 175                                         config->driConfig, pdraw);
 176
 177     if (!pdraw->base.driDrawable) {
 178         DRI2DestroyDrawable(psc->dpy, drawable);
 179         Xfree(pdraw);
 180         return NULL;
 181     }
 182
 183     return &pdraw->base;
 184 }
 185
 186 static void dri2SwapBuffers(__GLXDRIdrawable *pdraw)
 187 {
 188     __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 189
 190     DRI2SwapBuffers(pdraw->psc->dpy, pdraw->drawable,
 191                     0, 0, priv->width, priv->height);
 192 }
 193
 194 static void dri2DestroyScreen(__GLXscreenConfigs *psc)
 195 {
 196     /* Free the direct rendering per screen data */
 197     (*psc->core->destroyScreen)(psc->__driScreen);
 198     drmClose(psc->fd);
 199     psc->__driScreen = NULL;
 200 }
 201
 202 static __DRIbuffer *
 203 dri2GetBuffers(__DRIdrawable *driDrawable,
 204                int *width, int *height,
 205                unsigned int *attachments, int count,
 206                int *out_count, void *loaderPrivate)
 207 {
 208     __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 209     DRI2Buffer *buffers;
 210     int i;
 211
 212     buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
 213                              width, height, attachments, count, out_count);
 214     if (buffers == NULL)
 215        return NULL;
 216
 217     pdraw->width = *width;
 218     pdraw->height = *height;
 219
 220     /* This assumes the DRI2 buffer attachment tokens matches the
 221      * __DRIbuffer tokens. */
 222     for (i = 0; i < *out_count; i++) {
 223         pdraw->buffers[i].attachment = buffers[i].attachment;
 224         pdraw->buffers[i].name = buffers[i].name;
 225         pdraw->buffers[i].pitch = buffers[i].pitch;
 226         pdraw->buffers[i].cpp = buffers[i].cpp;
 227         pdraw->buffers[i].flags = buffers[i].flags;
 228     }
 229
 230     Xfree(buffers);
 231
 232     return pdraw->buffers;
 233 }
 234
 235 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
 236     { __DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION },
 237     dri2GetBuffers,
 238 };
 239
 240 static const __DRIextension *loader_extensions[] = {
 241     &dri2LoaderExtension.base,
 242     &systemTimeExtension.base,
 243     NULL
 244 };
 245
 246 static __GLXDRIscreen *dri2CreateScreen(__GLXscreenConfigs *psc, int screen,
 247                                         __GLXdisplayPrivate *priv)
 248 {
 249     const __DRIconfig **driver_configs;
 250     const __DRIextension **extensions;
 251     __GLXDRIscreen *psp;
 252     unsigned int sareaHandle;
 253     char *driverName, *busID;
 254     drm_magic_t magic;
 255     int i;
 256
 257     psp = Xmalloc(sizeof *psp);
 258     if (psp == NULL)
 259         return NULL;
 260
 261     /* Initialize per screen dynamic client GLX extensions */
 262     psc->ext_list_first_time = GL_TRUE;
 263
 264     if (!DRI2Connect(psc->dpy, screen, &driverName, &busID, &sareaHandle))
 265         return NULL;
 266
 267     psc->driver = driOpenDriver(driverName);
 268     if (psc->driver == NULL)
 269         goto handle_error;
 270
 271     extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
 272     if (extensions == NULL) {
 273         ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
 274         goto handle_error;
 275     }
 276
 277     for (i = 0; extensions[i]; i++) {
 278         if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
 279             psc->core = (__DRIcoreExtension *) extensions[i];
 280         if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
 281             psc->dri2 = (__DRIdri2Extension *) extensions[i];
 282     }
 283
 284     if (psc->core == NULL || psc->dri2 == NULL) {
 285         ErrorMessageF("core dri or dri2 extension not found\n");
 286         goto handle_error;
 287     }
 288
 289     psc->fd = drmOpen(NULL, busID);
 290     if (psc->fd < 0) {
 291         ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
 292         return NULL;
 293     }
 294
 295     if (drmGetMagic(psc->fd, &magic))
 296         return NULL;
 297
 298     if (!DRI2AuthConnection(psc->dpy, screen, magic)) {
 299         ErrorMessageF("failed to authenticate drm access\n");
 300         return NULL;
 301     }
 302
 303     psc->__driScreen =
 304         psc->dri2->createNewScreen(screen, psc->fd,
 305                                    loader_extensions, &driver_configs, psc);
 306     if (psc->__driScreen == NULL) {
 307         ErrorMessageF("failed to create dri screen\n");
 308         return NULL;
 309     }
 310
 311     driBindExtensions(psc, 1);
 312
 313     psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
 314     psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
 315
 316     psp->destroyScreen = dri2DestroyScreen;
 317     psp->createContext = dri2CreateContext;
 318     psp->createDrawable = dri2CreateDrawable;
 319     psp->swapBuffers = dri2SwapBuffers;
 320
 321     Xfree(driverName);
 322     Xfree(busID);
 323
 324     return psp;
 325
 326  handle_error:
 327     Xfree(driverName);
 328     Xfree(busID);
 329
 330     /* FIXME: clean up here */
 331
 332     return NULL;
 333 }
 334
 335 /* Called from __glXFreeDisplayPrivate.
 336  */
 337 static void dri2DestroyDisplay(__GLXDRIdisplay *dpy)
 338 {
 339     Xfree(dpy);
 340 }
 341
 342 /*
 343  * Allocate, initialize and return a __DRIdisplayPrivate object.
 344  * This is called from __glXInitialize() when we are given a new
 345  * display pointer.
 346  */
 347 _X_HIDDEN __GLXDRIdisplay *dri2CreateDisplay(Display *dpy)
 348 {
 349     __GLXDRIdisplayPrivate *pdp;
 350     int eventBase, errorBase;
 351
 352     if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
 353         return NULL;
 354
 355     pdp = Xmalloc(sizeof *pdp);
 356     if (pdp == NULL)
 357         return NULL;
 358
 359     if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
 360         Xfree(pdp);
 361         return NULL;
 362     }
 363
 364     pdp->driPatch = 0;
 365
 366     pdp->base.destroyDisplay = dri2DestroyDisplay;
 367     pdp->base.createScreen = dri2CreateScreen;
 368
 369     return &pdp->base;
 370 }
 371
 372 #endif /* GLX_DIRECT_RENDERING */