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 {
  56    __GLXDRIdisplay base;
  57
  58    /*
  59     ** XFree86-DRI version information
  60     */
  61    int driMajor;
  62    int driMinor;
  63    int driPatch;
  64 };
  65
  66 struct __GLXDRIcontextPrivateRec
  67 {
  68    __GLXDRIcontext base;
  69    __DRIcontext *driContext;
  70    __GLXscreenConfigs *psc;
  71 };
  72
  73 struct __GLXDRIdrawablePrivateRec
  74 {
  75    __GLXDRIdrawable base;
  76    __DRIbuffer buffers[5];
  77    int bufferCount;
  78    int width, height;
  79 };
  80
  81 static void
  82 dri2DestroyContext(__GLXDRIcontext * context,
  83                    __GLXscreenConfigs * psc, Display * dpy)
  84 {
  85    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
  86    const __DRIcoreExtension *core = pcp->psc->core;
  87
  88    (*core->destroyContext) (pcp->driContext);
  89
  90    Xfree(pcp);
  91 }
  92
  93 static Bool
  94 dri2BindContext(__GLXDRIcontext * context,
  95                 __GLXDRIdrawable * draw, __GLXDRIdrawable * read)
  96 {
  97    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
  98    const __DRIcoreExtension *core = pcp->psc->core;
  99
 100    return (*core->bindContext) (pcp->driContext,
 101                                 draw->driDrawable, read->driDrawable);
 102 }
 103
 104 static void
 105 dri2UnbindContext(__GLXDRIcontext * context)
 106 {
 107    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
 108    const __DRIcoreExtension *core = pcp->psc->core;
 109
 110    (*core->unbindContext) (pcp->driContext);
 111 }
 112
 113 static __GLXDRIcontext *
 114 dri2CreateContext(__GLXscreenConfigs * psc,
 115                   const __GLcontextModes * mode,
 116                   GLXContext gc, GLXContext shareList, int renderType)
 117 {
 118    __GLXDRIcontextPrivate *pcp, *pcp_shared;
 119    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
 120    __DRIcontext *shared = NULL;
 121
 122    if (shareList) {
 123       pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext;
 124       shared = pcp_shared->driContext;
 125    }
 126
 127    pcp = Xmalloc(sizeof *pcp);
 128    if (pcp == NULL)
 129       return NULL;
 130
 131    pcp->psc = psc;
 132    pcp->driContext =
 133       (*psc->dri2->createNewContext) (psc->__driScreen,
 134                                       config->driConfig, shared, pcp);
 135    gc->__driContext = pcp->driContext;
 136
 137    if (pcp->driContext == NULL) {
 138       Xfree(pcp);
 139       return NULL;
 140    }
 141
 142    pcp->base.destroyContext = dri2DestroyContext;
 143    pcp->base.bindContext = dri2BindContext;
 144    pcp->base.unbindContext = dri2UnbindContext;
 145
 146    return &pcp->base;
 147 }
 148
 149 static void
 150 dri2DestroyDrawable(__GLXDRIdrawable * pdraw)
 151 {
 152    const __DRIcoreExtension *core = pdraw->psc->core;
 153
 154    (*core->destroyDrawable) (pdraw->driDrawable);
 155    DRI2DestroyDrawable(pdraw->psc->dpy, pdraw->drawable);
 156    Xfree(pdraw);
 157 }
 158
 159 static __GLXDRIdrawable *
 160 dri2CreateDrawable(__GLXscreenConfigs * psc,
 161                    XID xDrawable,
 162                    GLXDrawable drawable, const __GLcontextModes * modes)
 163 {
 164    __GLXDRIdrawablePrivate *pdraw;
 165    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;
 166
 167    pdraw = Xmalloc(sizeof(*pdraw));
 168    if (!pdraw)
 169       return NULL;
 170
 171    pdraw->base.destroyDrawable = dri2DestroyDrawable;
 172    pdraw->base.xDrawable = xDrawable;
 173    pdraw->base.drawable = drawable;
 174    pdraw->base.psc = psc;
 175
 176    DRI2CreateDrawable(psc->dpy, xDrawable);
 177
 178    /* Create a new drawable */
 179    pdraw->base.driDrawable =
 180       (*psc->dri2->createNewDrawable) (psc->__driScreen,
 181                                        config->driConfig, pdraw);
 182
 183    if (!pdraw->base.driDrawable) {
 184       DRI2DestroyDrawable(psc->dpy, drawable);
 185       Xfree(pdraw);
 186       return NULL;
 187    }
 188
 189    return &pdraw->base;
 190 }
 191
 192 static void
 193 dri2SwapBuffers(__GLXDRIdrawable * pdraw)
 194 {
 195    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;
 196
 197    DRI2SwapBuffers(pdraw->psc->dpy, pdraw->drawable,
 198                    0, 0, priv->width, priv->height);
 199 }
 200
 201 static void
 202 dri2DestroyScreen(__GLXscreenConfigs * psc)
 203 {
 204    /* Free the direct rendering per screen data */
 205    (*psc->core->destroyScreen) (psc->__driScreen);
 206    drmClose(psc->fd);
 207    psc->__driScreen = NULL;
 208 }
 209
 210 static __DRIbuffer *
 211 dri2GetBuffers(__DRIdrawable * driDrawable,
 212                int *width, int *height,
 213                unsigned int *attachments, int count,
 214                int *out_count, void *loaderPrivate)
 215 {
 216    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
 217    DRI2Buffer *buffers;
 218    int i;
 219
 220    buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
 221                             width, height, attachments, count, out_count);
 222    if (buffers == NULL)
 223       return NULL;
 224
 225    pdraw->width = *width;
 226    pdraw->height = *height;
 227
 228    /* This assumes the DRI2 buffer attachment tokens matches the
 229     * __DRIbuffer tokens. */
 230    for (i = 0; i < *out_count; i++) {
 231       pdraw->buffers[i].attachment = buffers[i].attachment;
 232       pdraw->buffers[i].name = buffers[i].name;
 233       pdraw->buffers[i].pitch = buffers[i].pitch;
 234       pdraw->buffers[i].cpp = buffers[i].cpp;
 235       pdraw->buffers[i].flags = buffers[i].flags;
 236    }
 237
 238    Xfree(buffers);
 239
 240    return pdraw->buffers;
 241 }
 242
 243 static const __DRIdri2LoaderExtension dri2LoaderExtension = {
 244    {__DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION},
 245    dri2GetBuffers,
 246 };
 247
 248 static const __DRIextension *loader_extensions[] = {
 249    &dri2LoaderExtension.base,
 250    &systemTimeExtension.base,
 251    NULL
 252 };
 253
 254 static __GLXDRIscreen *
 255 dri2CreateScreen(__GLXscreenConfigs * psc, int screen,
 256                  __GLXdisplayPrivate * priv)
 257 {
 258    const __DRIconfig **driver_configs;
 259    const __DRIextension **extensions;
 260    __GLXDRIscreen *psp;
 261    unsigned int sareaHandle;
 262    char *driverName, *busID;
 263    drm_magic_t magic;
 264    int i;
 265
 266    psp = Xmalloc(sizeof *psp);
 267    if (psp == NULL)
 268       return NULL;
 269
 270    /* Initialize per screen dynamic client GLX extensions */
 271    psc->ext_list_first_time = GL_TRUE;
 272
 273    if (!DRI2Connect(psc->dpy, screen, &driverName, &busID, &sareaHandle))
 274       return NULL;
 275
 276    psc->driver = driOpenDriver(driverName);
 277    if (psc->driver == NULL)
 278       goto handle_error;
 279
 280    extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
 281    if (extensions == NULL) {
 282       ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
 283       goto handle_error;
 284    }
 285
 286    for (i = 0; extensions[i]; i++) {
 287       if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
 288          psc->core = (__DRIcoreExtension *) extensions[i];
 289       if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
 290          psc->dri2 = (__DRIdri2Extension *) extensions[i];
 291    }
 292
 293    if (psc->core == NULL || psc->dri2 == NULL) {
 294       ErrorMessageF("core dri or dri2 extension not found\n");
 295       goto handle_error;
 296    }
 297
 298    psc->fd = drmOpen(NULL, busID);
 299    if (psc->fd < 0) {
 300       ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
 301       return NULL;
 302    }
 303
 304    if (drmGetMagic(psc->fd, &magic))
 305       return NULL;
 306
 307    if (!DRI2AuthConnection(psc->dpy, screen, magic)) {
 308       ErrorMessageF("failed to authenticate drm access\n");
 309       return NULL;
 310    }
 311
 312    psc->__driScreen =
 313       psc->dri2->createNewScreen(screen, psc->fd,
 314                                  loader_extensions, &driver_configs, psc);
 315    if (psc->__driScreen == NULL) {
 316       ErrorMessageF("failed to create dri screen\n");
 317       return NULL;
 318    }
 319
 320    driBindExtensions(psc, 1);
 321
 322    psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
 323    psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);
 324
 325    psp->destroyScreen = dri2DestroyScreen;
 326    psp->createContext = dri2CreateContext;
 327    psp->createDrawable = dri2CreateDrawable;
 328    psp->swapBuffers = dri2SwapBuffers;
 329
 330    Xfree(driverName);
 331    Xfree(busID);
 332
 333    return psp;
 334
 335  handle_error:
 336    Xfree(driverName);
 337    Xfree(busID);
 338
 339    /* FIXME: clean up here */
 340
 341    return NULL;
 342 }
 343
 344 /* Called from __glXFreeDisplayPrivate.
 345  */
 346 static void
 347 dri2DestroyDisplay(__GLXDRIdisplay * dpy)
 348 {
 349    Xfree(dpy);
 350 }
 351
 352 /*
 353  * Allocate, initialize and return a __DRIdisplayPrivate object.
 354  * This is called from __glXInitialize() when we are given a new
 355  * display pointer.
 356  */
 357 _X_HIDDEN __GLXDRIdisplay *
 358 dri2CreateDisplay(Display * dpy)
 359 {
 360    __GLXDRIdisplayPrivate *pdp;
 361    int eventBase, errorBase;
 362
 363    if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
 364       return NULL;
 365
 366    pdp = Xmalloc(sizeof *pdp);
 367    if (pdp == NULL)
 368       return NULL;
 369
 370    if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
 371       Xfree(pdp);
 372       return NULL;
 373    }
 374
 375    pdp->driPatch = 0;
 376
 377    pdp->base.destroyDisplay = dri2DestroyDisplay;
 378    pdp->base.createScreen = dri2CreateScreen;
 379
 380    return &pdp->base;
 381 }
 382
 383 #endif /* GLX_DIRECT_RENDERING */