src/glx/x11/dri2_glx.c

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