1 /**************************************************************************
3 * Copyright 2009, VMware, Inc.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 * Author: Keith Whitwell <keithw@vmware.com>
29 * Author: Jakob Bornecrantz <wallbraker@gmail.com>
32 #include "dri_screen.h"
33 #include "dri_context.h"
34 #include "dri_drawable.h"
36 #include "pipe/p_context.h"
37 #include "pipe/p_screen.h"
38 #include "main/mtypes.h"
39 #include "main/renderbuffer.h"
40 #include "state_tracker/drm_api.h"
41 #include "state_tracker/dri1_api.h"
42 #include "state_tracker/st_public.h"
43 #include "state_tracker/st_context.h"
44 #include "state_tracker/st_cb_fbo.h"
46 #include "util/u_format.h"
47 #include "util/u_memory.h"
48 #include "util/u_rect.h"
49 #include "util/u_inlines.h"
51 static struct pipe_surface *
52 dri_surface_from_handle(struct drm_api *api,
53 struct pipe_screen *screen,
55 enum pipe_format format,
56 unsigned width, unsigned height, unsigned pitch)
58 struct pipe_surface *surface = NULL;
59 struct pipe_texture *texture = NULL;
60 struct pipe_texture templat;
61 struct winsys_handle whandle;
63 memset(&templat, 0, sizeof(templat));
64 templat.tex_usage |= PIPE_TEXTURE_USAGE_RENDER_TARGET;
65 templat.target = PIPE_TEXTURE_2D;
66 templat.last_level = 0;
68 templat.format = format;
69 templat.width0 = width;
70 templat.height0 = height;
72 memset(&whandle, 0, sizeof(whandle));
73 whandle.handle = handle;
74 whandle.stride = pitch;
76 texture = screen->texture_from_handle(screen, &templat, &whandle);
79 debug_printf("%s: Failed to blanket the buffer with a texture\n", __func__);
83 surface = screen->get_tex_surface(screen, texture, 0, 0, 0,
84 PIPE_BUFFER_USAGE_GPU_READ |
85 PIPE_BUFFER_USAGE_GPU_WRITE);
87 /* we don't need the texture from this point on */
88 pipe_texture_reference(&texture, NULL);
93 * Pixmaps have will have the same name of fake front and front.
96 dri2_check_if_pixmap(__DRIbuffer *buffers, int count)
98 boolean found = FALSE;
99 boolean is_pixmap = FALSE;
103 for (i = 0; i < count; i++) {
104 switch (buffers[i].attachment) {
105 case __DRI_BUFFER_FRONT_LEFT:
106 case __DRI_BUFFER_FAKE_FRONT_LEFT:
108 is_pixmap = buffers[i].name == name;
110 name = buffers[i].name;
122 * This will be called a drawable is known to have been resized.
125 dri_get_buffers(__DRIdrawable * dPriv)
128 struct dri_drawable *drawable = dri_drawable(dPriv);
129 struct pipe_surface *surface = NULL;
130 struct dri_screen *st_screen = dri_screen(drawable->sPriv);
131 struct pipe_screen *screen = st_screen->pipe_screen;
132 __DRIbuffer *buffers = NULL;
133 __DRIscreen *dri_screen = drawable->sPriv;
134 __DRIdrawable *dri_drawable = drawable->dPriv;
135 struct drm_api *api = st_screen->api;
136 boolean have_depth = FALSE;
139 if ((dri_screen->dri2.loader
140 && (dri_screen->dri2.loader->base.version > 2)
141 && (dri_screen->dri2.loader->getBuffersWithFormat != NULL))) {
142 buffers = (*dri_screen->dri2.loader->getBuffersWithFormat)
143 (dri_drawable, &dri_drawable->w, &dri_drawable->h,
144 drawable->attachments, drawable->num_attachments,
145 &count, dri_drawable->loaderPrivate);
147 assert(dri_screen->dri2.loader);
148 buffers = (*dri_screen->dri2.loader->getBuffers) (dri_drawable,
151 drawable->attachments,
153 num_attachments, &count,
158 if (buffers == NULL) {
162 /* set one cliprect to cover the whole dri_drawable */
165 dri_drawable->backX = 0;
166 dri_drawable->backY = 0;
167 dri_drawable->numClipRects = 1;
168 dri_drawable->pClipRects[0].x1 = 0;
169 dri_drawable->pClipRects[0].y1 = 0;
170 dri_drawable->pClipRects[0].x2 = dri_drawable->w;
171 dri_drawable->pClipRects[0].y2 = dri_drawable->h;
172 dri_drawable->numBackClipRects = 1;
173 dri_drawable->pBackClipRects[0].x1 = 0;
174 dri_drawable->pBackClipRects[0].y1 = 0;
175 dri_drawable->pBackClipRects[0].x2 = dri_drawable->w;
176 dri_drawable->pBackClipRects[0].y2 = dri_drawable->h;
178 if (drawable->old_num == count &&
179 drawable->old_w == dri_drawable->w &&
180 drawable->old_h == dri_drawable->h &&
181 memcmp(drawable->old, buffers, sizeof(__DRIbuffer) * count) == 0) {
184 drawable->old_num = count;
185 drawable->old_w = dri_drawable->w;
186 drawable->old_h = dri_drawable->h;
187 memcpy(drawable->old, buffers, sizeof(__DRIbuffer) * count);
190 drawable->is_pixmap = dri2_check_if_pixmap(buffers, count);
192 for (i = 0; i < count; i++) {
193 enum pipe_format format = 0;
196 switch (buffers[i].attachment) {
197 case __DRI_BUFFER_FRONT_LEFT:
198 if (!st_screen->auto_fake_front)
201 case __DRI_BUFFER_FAKE_FRONT_LEFT:
202 index = ST_SURFACE_FRONT_LEFT;
203 format = drawable->color_format;
205 case __DRI_BUFFER_BACK_LEFT:
206 index = ST_SURFACE_BACK_LEFT;
207 format = drawable->color_format;
209 case __DRI_BUFFER_DEPTH:
210 case __DRI_BUFFER_DEPTH_STENCIL:
211 case __DRI_BUFFER_STENCIL:
212 index = ST_SURFACE_DEPTH;
213 format = drawable->depth_stencil_format;
215 case __DRI_BUFFER_ACCUM:
220 if (index == ST_SURFACE_DEPTH) {
227 surface = dri_surface_from_handle(api,
232 dri_drawable->h, buffers[i].pitch);
234 switch (buffers[i].attachment) {
235 case __DRI_BUFFER_FRONT_LEFT:
236 case __DRI_BUFFER_FAKE_FRONT_LEFT:
237 case __DRI_BUFFER_BACK_LEFT:
238 drawable->color_format = surface->format;
240 case __DRI_BUFFER_DEPTH:
241 case __DRI_BUFFER_DEPTH_STENCIL:
242 case __DRI_BUFFER_STENCIL:
243 drawable->depth_stencil_format = surface->format;
245 case __DRI_BUFFER_ACCUM:
250 st_set_framebuffer_surface(drawable->stfb, index, surface);
251 pipe_surface_reference(&surface, NULL);
253 /* this needed, or else the state tracker fails to pick the new buffers */
254 st_resize_framebuffer(drawable->stfb, dri_drawable->w, dri_drawable->h);
258 * These are used for GLX_EXT_texture_from_pixmap
260 void dri2_set_tex_buffer2(__DRIcontext *pDRICtx, GLint target,
261 GLint format, __DRIdrawable *dPriv)
263 struct dri_drawable *drawable = dri_drawable(dPriv);
264 struct pipe_surface *ps;
266 if (!drawable->stfb->Base.Attachment[BUFFER_FRONT_LEFT].Renderbuffer) {
267 struct gl_renderbuffer *rb =
268 st_new_renderbuffer_fb(drawable->color_format, 0 /*XXX*/, FALSE);
269 _mesa_add_renderbuffer(&drawable->stfb->Base, BUFFER_FRONT_LEFT, rb);
272 dri_get_buffers(drawable->dPriv);
273 st_get_framebuffer_surface(drawable->stfb, ST_SURFACE_FRONT_LEFT, &ps);
278 st_bind_texture_surface(ps, target == GL_TEXTURE_2D ? ST_TEXTURE_2D :
279 ST_TEXTURE_RECT, 0, drawable->color_format);
282 void dri2_set_tex_buffer(__DRIcontext *pDRICtx, GLint target,
283 __DRIdrawable *dPriv)
285 dri2_set_tex_buffer2(pDRICtx, target, __DRI_TEXTURE_FORMAT_RGBA, dPriv);
289 dri_update_buffer(struct pipe_screen *screen, void *context_private)
291 struct dri_context *ctx = (struct dri_context *)context_private;
293 if (ctx->d_stamp == *ctx->dPriv->pStamp &&
294 ctx->r_stamp == *ctx->rPriv->pStamp)
297 ctx->d_stamp = *ctx->dPriv->pStamp;
298 ctx->r_stamp = *ctx->rPriv->pStamp;
300 /* Ask the X server for new renderbuffers. */
301 dri_get_buffers(ctx->dPriv);
302 if (ctx->dPriv != ctx->rPriv)
303 dri_get_buffers(ctx->rPriv);
308 dri_flush_frontbuffer(struct pipe_screen *screen,
309 struct pipe_surface *surf, void *context_private)
311 struct dri_context *ctx = (struct dri_context *)context_private;
312 struct dri_drawable *drawable = dri_drawable(ctx->dPriv);
313 __DRIdrawable *dri_drawable = ctx->dPriv;
314 __DRIscreen *dri_screen = ctx->sPriv;
316 /* XXX Does this function get called with DRI1? */
318 if (ctx->dPriv == NULL) {
319 debug_printf("%s: no drawable bound to context\n", __func__);
324 /* TODO if rendering to pixmaps is slow enable this code. */
325 if (drawable->is_pixmap)
331 (*dri_screen->dri2.loader->flushFrontBuffer)(dri_drawable,
332 dri_drawable->loaderPrivate);
336 * This is called when we need to set up GL rendering to a new X window.
339 dri_create_buffer(__DRIscreen * sPriv,
340 __DRIdrawable * dPriv,
341 const __GLcontextModes * visual, boolean isPixmap)
343 struct dri_screen *screen = sPriv->private;
344 struct dri_drawable *drawable = NULL;
348 goto fail; /* not implemented */
350 drawable = CALLOC_STRUCT(dri_drawable);
351 if (drawable == NULL)
354 if (visual->redBits == 8) {
355 if (visual->alphaBits == 8)
356 drawable->color_format = PIPE_FORMAT_B8G8R8A8_UNORM;
358 drawable->color_format = PIPE_FORMAT_B8G8R8X8_UNORM;
360 drawable->color_format = PIPE_FORMAT_B5G6R5_UNORM;
363 switch(visual->depthBits) {
366 drawable->depth_stencil_format = PIPE_FORMAT_NONE;
369 drawable->depth_stencil_format = PIPE_FORMAT_Z16_UNORM;
372 if (visual->stencilBits == 0) {
373 drawable->depth_stencil_format = (screen->d_depth_bits_last) ?
374 PIPE_FORMAT_Z24X8_UNORM:
375 PIPE_FORMAT_X8Z24_UNORM;
377 drawable->depth_stencil_format = (screen->sd_depth_bits_last) ?
378 PIPE_FORMAT_Z24S8_UNORM:
379 PIPE_FORMAT_S8Z24_UNORM;
383 drawable->depth_stencil_format = PIPE_FORMAT_Z32_UNORM;
387 drawable->stfb = st_create_framebuffer(visual,
388 drawable->color_format,
389 drawable->depth_stencil_format,
390 drawable->depth_stencil_format,
392 dPriv->h, (void *)drawable);
393 if (drawable->stfb == NULL)
396 drawable->sPriv = sPriv;
397 drawable->dPriv = dPriv;
398 dPriv->driverPrivate = (void *)drawable;
400 /* setup dri2 buffers information */
401 /* TODO incase of double buffer visual, delay fake creation */
403 if (sPriv->dri2.loader
404 && (sPriv->dri2.loader->base.version > 2)
405 && (sPriv->dri2.loader->getBuffersWithFormat != NULL)) {
406 drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
407 drawable->attachments[i++] = visual->rgbBits;
408 if (!screen->auto_fake_front) {
409 drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
410 drawable->attachments[i++] = visual->rgbBits;
412 if (visual->doubleBufferMode) {
413 drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
414 drawable->attachments[i++] = visual->rgbBits;
416 if (visual->depthBits && visual->stencilBits) {
417 drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
418 drawable->attachments[i++] = visual->depthBits + visual->stencilBits;
419 } else if (visual->depthBits) {
420 drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
421 drawable->attachments[i++] = visual->depthBits;
422 } else if (visual->stencilBits) {
423 drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
424 drawable->attachments[i++] = visual->stencilBits;
426 drawable->num_attachments = i / 2;
428 drawable->attachments[i++] = __DRI_BUFFER_FRONT_LEFT;
429 if (!screen->auto_fake_front)
430 drawable->attachments[i++] = __DRI_BUFFER_FAKE_FRONT_LEFT;
431 if (visual->doubleBufferMode)
432 drawable->attachments[i++] = __DRI_BUFFER_BACK_LEFT;
433 if (visual->depthBits && visual->stencilBits)
434 drawable->attachments[i++] = __DRI_BUFFER_DEPTH_STENCIL;
435 else if (visual->depthBits)
436 drawable->attachments[i++] = __DRI_BUFFER_DEPTH;
437 else if (visual->stencilBits)
438 drawable->attachments[i++] = __DRI_BUFFER_STENCIL;
439 drawable->num_attachments = i;
442 drawable->desired_fences = 2;
450 static struct pipe_fence_handle *
451 dri_swap_fences_pop_front(struct dri_drawable *draw)
453 struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
454 struct pipe_fence_handle *fence = NULL;
456 if (draw->cur_fences >= draw->desired_fences) {
457 screen->fence_reference(screen, &fence, draw->swap_fences[draw->tail]);
458 screen->fence_reference(screen, &draw->swap_fences[draw->tail++], NULL);
460 draw->tail &= DRI_SWAP_FENCES_MASK;
466 dri_swap_fences_push_back(struct dri_drawable *draw,
467 struct pipe_fence_handle *fence)
469 struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
474 if (draw->cur_fences < DRI_SWAP_FENCES_MAX) {
476 screen->fence_reference(screen, &draw->swap_fences[draw->head++],
478 draw->head &= DRI_SWAP_FENCES_MASK;
483 dri_destroy_buffer(__DRIdrawable * dPriv)
485 struct dri_drawable *drawable = dri_drawable(dPriv);
486 struct pipe_fence_handle *fence;
487 struct pipe_screen *screen = dri_screen(drawable->sPriv)->pipe_screen;
489 st_unreference_framebuffer(drawable->stfb);
490 drawable->desired_fences = 0;
491 while (drawable->cur_fences) {
492 fence = dri_swap_fences_pop_front(drawable);
493 screen->fence_reference(screen, &fence, NULL);
500 dri1_update_drawables_locked(struct dri_context *ctx,
501 __DRIdrawable * driDrawPriv,
502 __DRIdrawable * driReadPriv)
504 if (ctx->stLostLock) {
505 ctx->stLostLock = FALSE;
506 if (driDrawPriv == driReadPriv)
507 DRI_VALIDATE_DRAWABLE_INFO(ctx->sPriv, driDrawPriv);
509 DRI_VALIDATE_TWO_DRAWABLES_INFO(ctx->sPriv, driDrawPriv,
515 * This ensures all contexts which bind to a drawable pick up the
516 * drawable change and signal new buffer state.
517 * Calling st_resize_framebuffer for each context may seem like overkill,
518 * but no new buffers will actually be allocated if the dimensions don't
523 dri1_propagate_drawable_change(struct dri_context *ctx)
525 __DRIdrawable *dPriv = ctx->dPriv;
526 __DRIdrawable *rPriv = ctx->rPriv;
527 boolean flushed = FALSE;
529 if (dPriv && ctx->d_stamp != dPriv->lastStamp) {
531 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
533 ctx->d_stamp = dPriv->lastStamp;
534 st_resize_framebuffer(dri_drawable(dPriv)->stfb, dPriv->w, dPriv->h);
538 if (rPriv && dPriv != rPriv && ctx->r_stamp != rPriv->lastStamp) {
541 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
542 ctx->r_stamp = rPriv->lastStamp;
543 st_resize_framebuffer(dri_drawable(rPriv)->stfb, rPriv->w, rPriv->h);
545 } else if (rPriv && dPriv == rPriv) {
547 ctx->r_stamp = ctx->d_stamp;
553 dri1_update_drawables(struct dri_context *ctx,
554 struct dri_drawable *draw, struct dri_drawable *read)
557 dri1_update_drawables_locked(ctx, draw->dPriv, read->dPriv);
560 dri1_propagate_drawable_change(ctx);
563 static INLINE boolean
564 dri1_intersect_src_bbox(struct drm_clip_rect *dst,
567 const struct drm_clip_rect *src,
568 const struct drm_clip_rect *bbox)
573 xy1 = ((int)src->x1 > (int)bbox->x1 + dst_x) ? src->x1 :
574 (int)bbox->x1 + dst_x;
575 xy2 = ((int)src->x2 < (int)bbox->x2 + dst_x) ? src->x2 :
576 (int)bbox->x2 + dst_x;
577 if (xy1 >= xy2 || xy1 < 0)
583 xy1 = ((int)src->y1 > (int)bbox->y1 + dst_y) ? src->y1 :
584 (int)bbox->y1 + dst_y;
585 xy2 = ((int)src->y2 < (int)bbox->y2 + dst_y) ? src->y2 :
586 (int)bbox->y2 + dst_y;
587 if (xy1 >= xy2 || xy1 < 0)
596 dri1_swap_copy(struct dri_context *ctx,
597 struct pipe_surface *dst,
598 struct pipe_surface *src,
599 __DRIdrawable * dPriv, const struct drm_clip_rect *bbox)
601 struct pipe_context *pipe = ctx->pipe;
602 struct drm_clip_rect clip;
603 struct drm_clip_rect *cur;
606 cur = dPriv->pClipRects;
608 for (i = 0; i < dPriv->numClipRects; ++i) {
609 if (dri1_intersect_src_bbox(&clip, dPriv->x, dPriv->y, cur++, bbox)) {
610 if (pipe->surface_copy) {
611 pipe->surface_copy(pipe, dst, clip.x1, clip.y1,
613 (int)clip.x1 - dPriv->x,
614 (int)clip.y1 - dPriv->y,
615 clip.x2 - clip.x1, clip.y2 - clip.y1);
617 util_surface_copy(pipe, FALSE, dst, clip.x1, clip.y1,
619 (int)clip.x1 - dPriv->x,
620 (int)clip.y1 - dPriv->y,
621 clip.x2 - clip.x1, clip.y2 - clip.y1);
628 dri1_copy_to_front(struct dri_context *ctx,
629 struct pipe_surface *surf,
630 __DRIdrawable * dPriv,
631 const struct drm_clip_rect *sub_box,
632 struct pipe_fence_handle **fence)
634 struct pipe_context *pipe = ctx->pipe;
635 boolean save_lost_lock;
638 struct drm_clip_rect bbox;
639 boolean visible = TRUE;
644 save_lost_lock = ctx->stLostLock;
645 dri1_update_drawables_locked(ctx, dPriv, dPriv);
646 st_get_framebuffer_dimensions(dri_drawable(dPriv)->stfb, &cur_w, &cur_h);
654 visible = dri1_intersect_src_bbox(&bbox, 0, 0, &bbox, sub_box);
656 if (visible && __dri1_api_hooks->present_locked) {
658 __dri1_api_hooks->present_locked(pipe,
662 dPriv->x, dPriv->y, &bbox, fence);
664 } else if (visible && __dri1_api_hooks->front_srf_locked) {
666 struct pipe_surface *front = __dri1_api_hooks->front_srf_locked(pipe);
669 dri1_swap_copy(ctx, front, surf, dPriv, &bbox);
671 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, fence);
674 ctx->stLostLock = save_lost_lock;
677 * FIXME: Revisit this: Update drawables on copy_sub_buffer ?
681 dri1_update_drawables_locked(ctx, ctx->dPriv, ctx->rPriv);
684 dri1_propagate_drawable_change(ctx);
688 dri1_flush_frontbuffer(struct pipe_screen *screen,
689 struct pipe_surface *surf, void *context_private)
691 struct dri_context *ctx = (struct dri_context *)context_private;
692 struct pipe_fence_handle *dummy_fence;
694 dri1_copy_to_front(ctx, surf, ctx->dPriv, NULL, &dummy_fence);
695 screen->fence_reference(screen, &dummy_fence, NULL);
698 * FIXME: Do we need swap throttling here?
703 dri_swap_buffers(__DRIdrawable * dPriv)
705 struct dri_context *ctx;
706 struct pipe_surface *back_surf;
707 struct dri_drawable *draw = dri_drawable(dPriv);
708 struct pipe_screen *screen = dri_screen(draw->sPriv)->pipe_screen;
709 struct pipe_fence_handle *fence;
710 struct st_context *st = st_get_current();
712 assert(__dri1_api_hooks != NULL);
715 return; /* For now */
717 ctx = (struct dri_context *)st->pipe->priv;
719 st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
721 st_notify_swapbuffers(draw->stfb);
722 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
723 fence = dri_swap_fences_pop_front(draw);
725 (void)screen->fence_finish(screen, fence, 0);
726 screen->fence_reference(screen, &fence, NULL);
728 dri1_copy_to_front(ctx, back_surf, dPriv, NULL, &fence);
729 dri_swap_fences_push_back(draw, fence);
730 screen->fence_reference(screen, &fence, NULL);
735 dri_copy_sub_buffer(__DRIdrawable * dPriv, int x, int y, int w, int h)
737 struct pipe_screen *screen = dri_screen(dPriv->driScreenPriv)->pipe_screen;
738 struct drm_clip_rect sub_bbox;
739 struct dri_context *ctx;
740 struct pipe_surface *back_surf;
741 struct dri_drawable *draw = dri_drawable(dPriv);
742 struct pipe_fence_handle *dummy_fence;
743 struct st_context *st = st_get_current();
745 assert(__dri1_api_hooks != NULL);
750 ctx = (struct dri_context *)st->pipe->priv;
757 st_get_framebuffer_surface(draw->stfb, ST_SURFACE_BACK_LEFT, &back_surf);
759 st_flush(ctx->st, PIPE_FLUSH_RENDER_CACHE, NULL);
760 dri1_copy_to_front(ctx, back_surf, dPriv, &sub_bbox, &dummy_fence);
761 screen->fence_reference(screen, &dummy_fence, NULL);
765 /* vim: set sw=3 ts=8 sts=3 expandtab: */