summaryrefslogtreecommitdiff
path: root/src/glx/x11/dri2_glx.c
blob: c56adfa558761175ef8ce6050feed1bb0a2e4436 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
/*
 * Copyright © 2008 Red Hat, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Soft-
 * ware"), to deal in the Software without restriction, including without
 * limitation the rights to use, copy, modify, merge, publish, distribute,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, provided that the above copyright
 * notice(s) and this permission notice appear in all copies of the Soft-
 * ware and that both the above copyright notice(s) and this permission
 * notice appear in supporting documentation.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABIL-
 * ITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY
 * RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR HOLDERS INCLUDED IN
 * THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL INDIRECT OR CONSE-
 * QUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFOR-
 * MANCE OF THIS SOFTWARE.
 *
 * Except as contained in this notice, the name of a copyright holder shall
 * not be used in advertising or otherwise to promote the sale, use or
 * other dealings in this Software without prior written authorization of
 * the copyright holder.
 *
 * Authors:
 *   Kristian Høgsberg (krh@redhat.com)
 */

#ifdef GLX_DIRECT_RENDERING

#include <X11/Xlib.h>
#include <X11/extensions/Xfixes.h>
#include <X11/extensions/Xdamage.h>
#include "glheader.h"
#include "glxclient.h"
#include "glcontextmodes.h"
#include "xf86dri.h"
#include "sarea.h"
#include <dlfcn.h>
#include <sys/types.h>
#include <sys/mman.h>
#include "xf86drm.h"
#include "dri2.h"
#include "dri_common.h"

typedef struct __GLXDRIdisplayPrivateRec __GLXDRIdisplayPrivate;
typedef struct __GLXDRIcontextPrivateRec __GLXDRIcontextPrivate;
typedef struct __GLXDRIdrawablePrivateRec __GLXDRIdrawablePrivate;

struct __GLXDRIdisplayPrivateRec {
    __GLXDRIdisplay base;

    /*
    ** XFree86-DRI version information
    */
    int driMajor;
    int driMinor;
    int driPatch;
};

struct __GLXDRIcontextPrivateRec {
    __GLXDRIcontext base;
    __DRIcontext *driContext;
    __GLXscreenConfigs *psc;
};

struct __GLXDRIdrawablePrivateRec {
    __GLXDRIdrawable base;
    __DRIbuffer buffers[5];
    int bufferCount;
    int width, height;
};

static void dri2DestroyContext(__GLXDRIcontext *context,
			      __GLXscreenConfigs *psc, Display *dpy)
{
    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
    const __DRIcoreExtension *core = pcp->psc->core;

    (*core->destroyContext)(pcp->driContext);

    Xfree(pcp);
}

static Bool dri2BindContext(__GLXDRIcontext *context,
			   __GLXDRIdrawable *draw, __GLXDRIdrawable *read)
{
    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
    const __DRIcoreExtension *core = pcp->psc->core;

    return (*core->bindContext)(pcp->driContext,
				draw->driDrawable,
				read->driDrawable);
}

static void dri2UnbindContext(__GLXDRIcontext *context)
{
    __GLXDRIcontextPrivate *pcp = (__GLXDRIcontextPrivate *) context;
    const __DRIcoreExtension *core = pcp->psc->core;

    (*core->unbindContext)(pcp->driContext);
}

static __GLXDRIcontext *dri2CreateContext(__GLXscreenConfigs *psc,
					 const __GLcontextModes *mode,
					 GLXContext gc,
					 GLXContext shareList, int renderType)
{
    __GLXDRIcontextPrivate *pcp, *pcp_shared;
    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) mode;
    __DRIcontext *shared = NULL;

    if (shareList) {
	pcp_shared = (__GLXDRIcontextPrivate *) shareList->driContext;
	shared = pcp_shared->driContext;
    }

    pcp = Xmalloc(sizeof *pcp);
    if (pcp == NULL)
	return NULL;

    pcp->psc = psc;
    pcp->driContext = 
	(*psc->dri2->createNewContext)(psc->__driScreen,
				       config->driConfig, shared, pcp);
    gc->__driContext = pcp->driContext;

    if (pcp->driContext == NULL) {
	Xfree(pcp);
	return NULL;
    }

    pcp->base.destroyContext = dri2DestroyContext;
    pcp->base.bindContext = dri2BindContext;
    pcp->base.unbindContext = dri2UnbindContext;

    return &pcp->base;
}

static void dri2DestroyDrawable(__GLXDRIdrawable *pdraw)
{
    const __DRIcoreExtension *core = pdraw->psc->core;

    (*core->destroyDrawable)(pdraw->driDrawable);
    DRI2DestroyDrawable(pdraw->psc->dpy, pdraw->drawable);
    Xfree(pdraw);
}

static __GLXDRIdrawable *dri2CreateDrawable(__GLXscreenConfigs *psc,
					    XID xDrawable,
					    GLXDrawable drawable,
					    const __GLcontextModes *modes)
{
    __GLXDRIdrawablePrivate *pdraw;
    __GLXDRIconfigPrivate *config = (__GLXDRIconfigPrivate *) modes;

    pdraw = Xmalloc(sizeof(*pdraw));
    if (!pdraw)
	return NULL;

    pdraw->base.destroyDrawable = dri2DestroyDrawable;
    pdraw->base.xDrawable = xDrawable;
    pdraw->base.drawable = drawable;
    pdraw->base.psc = psc;

    DRI2CreateDrawable(psc->dpy, xDrawable);

    /* Create a new drawable */
    pdraw->base.driDrawable =
	(*psc->dri2->createNewDrawable)(psc->__driScreen,
					config->driConfig, pdraw);

    if (!pdraw->base.driDrawable) {
	DRI2DestroyDrawable(psc->dpy, drawable);
	Xfree(pdraw);
	return NULL;
    }

    return &pdraw->base;
}

static void dri2SwapBuffers(__GLXDRIdrawable *pdraw)
{
    __GLXDRIdrawablePrivate *priv = (__GLXDRIdrawablePrivate *) pdraw;

    DRI2SwapBuffers(pdraw->psc->dpy, pdraw->drawable,
		    0, 0, priv->width, priv->height);
}

static void dri2DestroyScreen(__GLXscreenConfigs *psc)
{
    /* Free the direct rendering per screen data */
    (*psc->core->destroyScreen)(psc->__driScreen);
    drmClose(psc->fd);
    psc->__driScreen = NULL;
}

static __DRIbuffer *
dri2GetBuffers(__DRIdrawable *driDrawable,
	       int *width, int *height,
	       unsigned int *attachments, int count,
	       int *out_count, void *loaderPrivate)
{
    __GLXDRIdrawablePrivate *pdraw = loaderPrivate;
    DRI2Buffer *buffers;
    int i;

    buffers = DRI2GetBuffers(pdraw->base.psc->dpy, pdraw->base.xDrawable,
			     width, height, attachments, count, out_count);
    pdraw->width = *width;
    pdraw->height = *height;

    /* This assumes the DRI2 buffer attachment tokens matches the
     * __DRIbuffer tokens. */
    for (i = 0; i < *out_count; i++) {
	pdraw->buffers[i].attachment = buffers[i].attachment;
	pdraw->buffers[i].name = buffers[i].name;
	pdraw->buffers[i].pitch = buffers[i].pitch;
	pdraw->buffers[i].cpp = buffers[i].cpp;
	pdraw->buffers[i].flags = buffers[i].flags;
    }

    Xfree(buffers);

    return pdraw->buffers;
}

static const __DRIdri2LoaderExtension dri2LoaderExtension = {
    { __DRI_DRI2_LOADER, __DRI_DRI2_LOADER_VERSION },
    dri2GetBuffers,
};

static const __DRIextension *loader_extensions[] = {
    &dri2LoaderExtension.base,
    &systemTimeExtension.base,
    NULL
};

static __GLXDRIscreen *dri2CreateScreen(__GLXscreenConfigs *psc, int screen,
					__GLXdisplayPrivate *priv)
{
    const __DRIconfig **driver_configs;
    const __DRIextension **extensions;
    __GLXDRIscreen *psp;
    unsigned int sareaHandle;
    char *driverName, *busID;
    drm_magic_t magic;
    int i;

    psp = Xmalloc(sizeof *psp);
    if (psp == NULL)
	return NULL;

    /* Initialize per screen dynamic client GLX extensions */
    psc->ext_list_first_time = GL_TRUE;

    if (!DRI2Connect(psc->dpy, screen, &driverName, &busID, &sareaHandle))
	return NULL;

    psc->driver = driOpenDriver(driverName);
    if (psc->driver == NULL)
	goto handle_error;

    extensions = dlsym(psc->driver, __DRI_DRIVER_EXTENSIONS);
    if (extensions == NULL) {
	ErrorMessageF("driver exports no extensions (%s)\n", dlerror());
	goto handle_error;
    }
    
    for (i = 0; extensions[i]; i++) {
	if (strcmp(extensions[i]->name, __DRI_CORE) == 0)
	    psc->core = (__DRIcoreExtension *) extensions[i];
	if (strcmp(extensions[i]->name, __DRI_DRI2) == 0)
	    psc->dri2 = (__DRIdri2Extension *) extensions[i];
    }

    if (psc->core == NULL || psc->dri2 == NULL) {
	ErrorMessageF("core dri or dri2 extension not found\n");
	goto handle_error;
    }

    psc->fd = drmOpen(NULL, busID);
    if (psc->fd < 0) {
	ErrorMessageF("failed to open drm device: %s\n", strerror(errno));
	return NULL;
    }

    if (drmGetMagic(psc->fd, &magic))
	return NULL;

    if (!DRI2AuthConnection(psc->dpy, screen, magic)) {
	ErrorMessageF("failed to authenticate drm access\n");
	return NULL;
    }

    psc->__driScreen = 
	psc->dri2->createNewScreen(screen, psc->fd,
				   loader_extensions, &driver_configs, psc);
    if (psc->__driScreen == NULL) {
	ErrorMessageF("failed to create dri screen\n");
	return NULL;
    }

    driBindExtensions(psc, 1);

    psc->configs = driConvertConfigs(psc->core, psc->configs, driver_configs);
    psc->visuals = driConvertConfigs(psc->core, psc->visuals, driver_configs);

    psp->destroyScreen = dri2DestroyScreen;
    psp->createContext = dri2CreateContext;
    psp->createDrawable = dri2CreateDrawable;
    psp->swapBuffers = dri2SwapBuffers;

    Xfree(driverName);
    Xfree(busID);

    return psp;

 handle_error:
    Xfree(driverName);
    Xfree(busID);

    /* FIXME: clean up here */

    return NULL;
}

/* Called from __glXFreeDisplayPrivate.
 */
static void dri2DestroyDisplay(__GLXDRIdisplay *dpy)
{
    Xfree(dpy);
}

/*
 * Allocate, initialize and return a __DRIdisplayPrivate object.
 * This is called from __glXInitialize() when we are given a new
 * display pointer.
 */
_X_HIDDEN __GLXDRIdisplay *dri2CreateDisplay(Display *dpy)
{
    __GLXDRIdisplayPrivate *pdp;
    int eventBase, errorBase;

    if (!DRI2QueryExtension(dpy, &eventBase, &errorBase))
	return NULL;

    pdp = Xmalloc(sizeof *pdp);
    if (pdp == NULL)
	return NULL;

    if (!DRI2QueryVersion(dpy, &pdp->driMajor, &pdp->driMinor)) {
	Xfree(pdp);
	return NULL;
    }

    pdp->driPatch = 0;

    pdp->base.destroyDisplay = dri2DestroyDisplay;
    pdp->base.createScreen = dri2CreateScreen;

    return &pdp->base;
}

#endif /* GLX_DIRECT_RENDERING */