#define DRI_CONF_VBLANK_DEF_INTERVAL_1 2
#define DRI_CONF_VBLANK_ALWAYS_SYNC 3
+/**
+ * A cached blit context.
+ */
+struct loader_dri3_blit_context {
+ mtx_t mtx;
+ __DRIcontext *ctx;
+ __DRIscreen *cur_screen;
+ const __DRIcoreExtension *core;
+};
+
+/* For simplicity we maintain the cache only for a single screen at a time */
+static struct loader_dri3_blit_context blit_context = {
+ _MTX_INITIALIZER_NP, NULL
+};
+
+static void
+dri3_flush_present_events(struct loader_dri3_drawable *draw);
+
+static struct loader_dri3_buffer *
+dri3_find_back_alloc(struct loader_dri3_drawable *draw);
+
+/**
+ * Do we have blit functionality in the image blit extension?
+ *
+ * \param draw[in] The drawable intended to blit from / to.
+ * \return true if we have blit functionality. false otherwise.
+ */
+static bool loader_dri3_have_image_blit(const struct loader_dri3_drawable *draw)
+{
+ return draw->ext->image->base.version >= 9 &&
+ draw->ext->image->blitImage != NULL;
+}
+
+/**
+ * Get and lock (for use with the current thread) a dri context associated
+ * with the drawable's dri screen. The context is intended to be used with
+ * the dri image extension's blitImage method.
+ *
+ * \param draw[in] Pointer to the drawable whose dri screen we want a
+ * dri context for.
+ * \return A dri context or NULL if context creation failed.
+ *
+ * When the caller is done with the context (even if the context returned was
+ * NULL), the caller must call loader_dri3_blit_context_put.
+ */
+static __DRIcontext *
+loader_dri3_blit_context_get(struct loader_dri3_drawable *draw)
+{
+ mtx_lock(&blit_context.mtx);
+
+ if (blit_context.ctx && blit_context.cur_screen != draw->dri_screen) {
+ blit_context.core->destroyContext(blit_context.ctx);
+ blit_context.ctx = NULL;
+ }
+
+ if (!blit_context.ctx) {
+ blit_context.ctx = draw->ext->core->createNewContext(draw->dri_screen,
+ NULL, NULL, NULL);
+ blit_context.cur_screen = draw->dri_screen;
+ blit_context.core = draw->ext->core;
+ }
+
+ return blit_context.ctx;
+}
+
+/**
+ * Release (for use with other threads) a dri context previously obtained using
+ * loader_dri3_blit_context_get.
+ */
+static void
+loader_dri3_blit_context_put(void)
+{
+ mtx_unlock(&blit_context.mtx);
+}
+
+/**
+ * Blit (parts of) the contents of a DRI image to another dri image
+ *
+ * \param draw[in] The drawable which owns the images.
+ * \param dst[in] The destination image.
+ * \param src[in] The source image.
+ * \param dstx0[in] Start destination coordinate.
+ * \param dsty0[in] Start destination coordinate.
+ * \param width[in] Blit width.
+ * \param height[in] Blit height.
+ * \param srcx0[in] Start source coordinate.
+ * \param srcy0[in] Start source coordinate.
+ * \param flush_flag[in] Image blit flush flag.
+ * \return true iff successful.
+ */
+static bool
+loader_dri3_blit_image(struct loader_dri3_drawable *draw,
+ __DRIimage *dst, __DRIimage *src,
+ int dstx0, int dsty0, int width, int height,
+ int srcx0, int srcy0, int flush_flag)
+{
+ __DRIcontext *dri_context;
+ bool use_blit_context = false;
+
+ if (!loader_dri3_have_image_blit(draw))
+ return false;
+
+ dri_context = draw->vtable->get_dri_context(draw);
+
+ if (!dri_context || !draw->vtable->in_current_context(draw)) {
+ dri_context = loader_dri3_blit_context_get(draw);
+ use_blit_context = true;
+ flush_flag |= __BLIT_FLAG_FLUSH;
+ }
+
+ if (dri_context)
+ draw->ext->image->blitImage(dri_context, dst, src, dstx0, dsty0,
+ width, height, srcx0, srcy0,
+ width, height, flush_flag);
+
+ if (use_blit_context)
+ loader_dri3_blit_context_put();
+
+ return dri_context != NULL;
+}
+
static inline void
dri3_fence_reset(xcb_connection_t *c, struct loader_dri3_buffer *buffer)
{
}
static inline void
-dri3_fence_await(xcb_connection_t *c, struct loader_dri3_buffer *buffer)
+dri3_fence_await(xcb_connection_t *c, struct loader_dri3_drawable *draw,
+ struct loader_dri3_buffer *buffer)
{
xcb_flush(c);
xshmfence_await(buffer->shm_fence);
+ if (draw) {
+ mtx_lock(&draw->mtx);
+ dri3_flush_present_events(draw);
+ mtx_unlock(&draw->mtx);
+ }
}
static void
loader_dri3_set_swap_interval(struct loader_dri3_drawable *draw, int interval)
{
draw->swap_interval = interval;
- dri3_update_num_back(draw);
}
/** dri3_free_render_buffer
xcb_discard_reply(draw->conn, cookie.sequence);
xcb_unregister_for_special_event(draw->conn, draw->special_event);
}
+
+ cnd_destroy(&draw->event_cnd);
+ mtx_destroy(&draw->mtx);
}
int
draw->have_fake_front = 0;
draw->first_init = true;
+ draw->cur_blit_source = -1;
+ draw->back_format = __DRI_IMAGE_FORMAT_NONE;
+ mtx_init(&draw->mtx, mtx_plain);
+ cnd_init(&draw->event_cnd);
+
if (draw->ext->config)
draw->ext->config->configQueryi(draw->dri_screen,
"vblank_mode", &vblank_mode);
draw->vtable->set_drawable_size(draw, draw->width, draw->height);
free(reply);
+ draw->swap_method = __DRI_ATTRIB_SWAP_UNDEFINED;
+ if (draw->ext->core->base.version >= 2) {
+ (void )draw->ext->core->getConfigAttrib(dri_config,
+ __DRI_ATTRIB_SWAP_METHOD,
+ &draw->swap_method);
+ }
+
/*
* Make sure server has the same swap interval we do for the new
* drawable.
draw->width = ce->width;
draw->height = ce->height;
draw->vtable->set_drawable_size(draw, draw->width, draw->height);
+ draw->ext->flush->invalidate(draw->dri_drawable);
break;
}
case XCB_PRESENT_COMPLETE_NOTIFY: {
draw->flipping = false;
break;
}
- dri3_update_num_back(draw);
if (draw->vtable->show_fps)
draw->vtable->show_fps(draw, ce->ust);
draw->ust = ce->ust;
draw->msc = ce->msc;
- } else {
- draw->recv_msc_serial = ce->serial;
+ } else if (ce->serial == draw->eid) {
draw->notify_ust = ce->ust;
draw->notify_msc = ce->msc;
}
for (b = 0; b < sizeof(draw->buffers) / sizeof(draw->buffers[0]); b++) {
struct loader_dri3_buffer *buf = draw->buffers[b];
- if (buf && buf->pixmap == ie->pixmap) {
+ if (buf && buf->pixmap == ie->pixmap)
buf->busy = 0;
- if (draw->num_back <= b && b < LOADER_DRI3_MAX_BACK) {
- dri3_free_render_buffer(draw, buf);
- draw->buffers[b] = NULL;
- }
- break;
+
+ if (buf && draw->num_back <= b && b < LOADER_DRI3_MAX_BACK &&
+ draw->cur_blit_source != b &&
+ !buf->busy) {
+ dri3_free_render_buffer(draw, buf);
+ draw->buffers[b] = NULL;
}
}
break;
}
static bool
-dri3_wait_for_event(struct loader_dri3_drawable *draw)
+dri3_wait_for_event_locked(struct loader_dri3_drawable *draw)
{
xcb_generic_event_t *ev;
xcb_present_generic_event_t *ge;
xcb_flush(draw->conn);
- ev = xcb_wait_for_special_event(draw->conn, draw->special_event);
+
+ /* Only have one thread waiting for events at a time */
+ if (draw->has_event_waiter) {
+ cnd_wait(&draw->event_cnd, &draw->mtx);
+ /* Another thread has updated the protected info, so retest. */
+ return true;
+ } else {
+ draw->has_event_waiter = true;
+ /* Allow other threads access to the drawable while we're waiting. */
+ mtx_unlock(&draw->mtx);
+ ev = xcb_wait_for_special_event(draw->conn, draw->special_event);
+ mtx_lock(&draw->mtx);
+ draw->has_event_waiter = false;
+ cnd_broadcast(&draw->event_cnd);
+ }
if (!ev)
return false;
ge = (void *) ev;
int64_t divisor, int64_t remainder,
int64_t *ust, int64_t *msc, int64_t *sbc)
{
- uint32_t msc_serial;
-
- msc_serial = ++draw->send_msc_serial;
- xcb_present_notify_msc(draw->conn,
- draw->drawable,
- msc_serial,
- target_msc,
- divisor,
- remainder);
+ xcb_void_cookie_t cookie = xcb_present_notify_msc(draw->conn,
+ draw->drawable,
+ draw->eid,
+ target_msc,
+ divisor,
+ remainder);
+ xcb_generic_event_t *ev;
+ unsigned full_sequence;
+ mtx_lock(&draw->mtx);
xcb_flush(draw->conn);
/* Wait for the event */
- if (draw->special_event) {
- while ((int32_t) (msc_serial - draw->recv_msc_serial) > 0) {
- if (!dri3_wait_for_event(draw))
- return false;
+ do {
+ ev = xcb_wait_for_special_event(draw->conn, draw->special_event);
+ if (!ev) {
+ mtx_unlock(&draw->mtx);
+ return false;
}
- }
+
+ full_sequence = ev->full_sequence;
+ dri3_handle_present_event(draw, (void *) ev);
+ } while (full_sequence != cookie.sequence || draw->notify_msc < target_msc);
*ust = draw->notify_ust;
*msc = draw->notify_msc;
*sbc = draw->recv_sbc;
+ mtx_unlock(&draw->mtx);
return true;
}
* swaps requested with glXSwapBuffersMscOML for that window have
* completed."
*/
+ mtx_lock(&draw->mtx);
if (!target_sbc)
target_sbc = draw->send_sbc;
while (draw->recv_sbc < target_sbc) {
- if (!dri3_wait_for_event(draw))
+ if (!dri3_wait_for_event_locked(draw)) {
+ mtx_unlock(&draw->mtx);
return 0;
+ }
}
*ust = draw->ust;
*msc = draw->msc;
*sbc = draw->recv_sbc;
+ mtx_unlock(&draw->mtx);
return 1;
}
dri3_find_back(struct loader_dri3_drawable *draw)
{
int b;
- xcb_generic_event_t *ev;
- xcb_present_generic_event_t *ge;
+ int num_to_consider;
+
+ mtx_lock(&draw->mtx);
+ /* Increase the likelyhood of reusing current buffer */
+ dri3_flush_present_events(draw);
+
+ /* Check whether we need to reuse the current back buffer as new back.
+ * In that case, wait until it's not busy anymore.
+ */
+ dri3_update_num_back(draw);
+ num_to_consider = draw->num_back;
+ if (!loader_dri3_have_image_blit(draw) && draw->cur_blit_source != -1) {
+ num_to_consider = 1;
+ draw->cur_blit_source = -1;
+ }
for (;;) {
- for (b = 0; b < draw->num_back; b++) {
+ for (b = 0; b < num_to_consider; b++) {
int id = LOADER_DRI3_BACK_ID((b + draw->cur_back) % draw->num_back);
struct loader_dri3_buffer *buffer = draw->buffers[id];
if (!buffer || !buffer->busy) {
draw->cur_back = id;
+ mtx_unlock(&draw->mtx);
return id;
}
}
- xcb_flush(draw->conn);
- ev = xcb_wait_for_special_event(draw->conn, draw->special_event);
- if (!ev)
+ if (!dri3_wait_for_event_locked(draw)) {
+ mtx_unlock(&draw->mtx);
return -1;
- ge = (void *) ev;
- dri3_handle_present_event(draw, ge);
+ }
}
}
{
struct loader_dri3_buffer *back;
unsigned flags = __DRI2_FLUSH_DRAWABLE;
- __DRIcontext *dri_context;
-
- dri_context = draw->vtable->get_dri_context(draw);
/* Check we have the right attachments */
if (!draw->have_back || draw->is_pixmap)
flags |= __DRI2_FLUSH_CONTEXT;
loader_dri3_flush(draw, flags, __DRI2_THROTTLE_SWAPBUFFER);
- back = dri3_back_buffer(draw);
+ back = dri3_find_back_alloc(draw);
+ if (!back)
+ return;
+
y = draw->height - y - height;
- if (draw->is_different_gpu && draw->vtable->in_current_context(draw)) {
+ if (draw->is_different_gpu) {
/* Update the linear buffer part of the back buffer
* for the dri3_copy_area operation
*/
- draw->ext->image->blitImage(dri_context,
- back->linear_buffer,
- back->image,
- 0, 0, back->width,
- back->height,
- 0, 0, back->width,
- back->height, __BLIT_FLAG_FLUSH);
- /* We use blitImage to update our fake front,
- */
- if (draw->have_fake_front)
- draw->ext->image->blitImage(dri_context,
- dri3_fake_front_buffer(draw)->image,
- back->image,
- x, y, width, height,
- x, y, width, height, __BLIT_FLAG_FLUSH);
+ (void) loader_dri3_blit_image(draw,
+ back->linear_buffer,
+ back->image,
+ 0, 0, back->width, back->height,
+ 0, 0, __BLIT_FLAG_FLUSH);
}
loader_dri3_swapbuffer_barrier(draw);
dri3_fence_reset(draw->conn, back);
dri3_copy_area(draw->conn,
- dri3_back_buffer(draw)->pixmap,
+ back->pixmap,
draw->drawable,
dri3_drawable_gc(draw),
x, y, x, y, width, height);
/* Refresh the fake front (if present) after we just damaged the real
* front.
*/
- if (draw->have_fake_front && !draw->is_different_gpu) {
+ if (draw->have_fake_front &&
+ !loader_dri3_blit_image(draw,
+ dri3_fake_front_buffer(draw)->image,
+ back->image,
+ x, y, width, height,
+ x, y, __BLIT_FLAG_FLUSH) &&
+ !draw->is_different_gpu) {
dri3_fence_reset(draw->conn, dri3_fake_front_buffer(draw));
dri3_copy_area(draw->conn,
- dri3_back_buffer(draw)->pixmap,
+ back->pixmap,
dri3_fake_front_buffer(draw)->pixmap,
dri3_drawable_gc(draw),
x, y, x, y, width, height);
dri3_fence_trigger(draw->conn, dri3_fake_front_buffer(draw));
- dri3_fence_await(draw->conn, dri3_fake_front_buffer(draw));
+ dri3_fence_await(draw->conn, NULL, dri3_fake_front_buffer(draw));
}
- dri3_fence_await(draw->conn, back);
+ dri3_fence_await(draw->conn, draw, back);
}
void
dri3_drawable_gc(draw),
0, 0, 0, 0, draw->width, draw->height);
dri3_fence_trigger(draw->conn, dri3_fake_front_buffer(draw));
- dri3_fence_await(draw->conn, dri3_fake_front_buffer(draw));
+ dri3_fence_await(draw->conn, draw, dri3_fake_front_buffer(draw));
}
void
loader_dri3_wait_x(struct loader_dri3_drawable *draw)
{
struct loader_dri3_buffer *front;
- __DRIcontext *dri_context;
if (draw == NULL || !draw->have_fake_front)
return;
front = dri3_fake_front_buffer(draw);
- dri_context = draw->vtable->get_dri_context(draw);
loader_dri3_copy_drawable(draw, front->pixmap, draw->drawable);
* Copy back to the tiled buffer we use for rendering.
* Note that we don't need flushing.
*/
- if (draw->is_different_gpu && draw->vtable->in_current_context(draw))
- draw->ext->image->blitImage(dri_context,
- front->image,
- front->linear_buffer,
- 0, 0, front->width,
- front->height,
- 0, 0, front->width,
- front->height, 0);
+ if (draw->is_different_gpu)
+ (void) loader_dri3_blit_image(draw,
+ front->image,
+ front->linear_buffer,
+ 0, 0, front->width, front->height,
+ 0, 0, 0);
}
void
loader_dri3_wait_gl(struct loader_dri3_drawable *draw)
{
struct loader_dri3_buffer *front;
- __DRIcontext *dri_context;
if (draw == NULL || !draw->have_fake_front)
return;
front = dri3_fake_front_buffer(draw);
- dri_context = draw->vtable->get_dri_context(draw);
/* In the psc->is_different_gpu case, we update the linear_buffer
* before updating the real front.
*/
- if (draw->is_different_gpu && draw->vtable->in_current_context(draw))
- draw->ext->image->blitImage(dri_context,
- front->linear_buffer,
- front->image,
- 0, 0, front->width,
- front->height,
- 0, 0, front->width,
- front->height, __BLIT_FLAG_FLUSH);
+ if (draw->is_different_gpu)
+ (void) loader_dri3_blit_image(draw,
+ front->linear_buffer,
+ front->image,
+ 0, 0, front->width, front->height,
+ 0, 0, __BLIT_FLAG_FLUSH);
loader_dri3_swapbuffer_barrier(draw);
loader_dri3_copy_drawable(draw, draw->drawable, front->pixmap);
}
/* Check to see if any configuration changes have occurred
* since we were last invoked
*/
+ if (draw->has_event_waiter)
+ return;
+
if (draw->special_event) {
xcb_generic_event_t *ev;
bool force_copy)
{
struct loader_dri3_buffer *back;
- __DRIcontext *dri_context;
int64_t ret = 0;
uint32_t options = XCB_PRESENT_OPTION_NONE;
- dri_context = draw->vtable->get_dri_context(draw);
-
draw->vtable->flush_drawable(draw, flush_flags);
- back = draw->buffers[dri3_find_back(draw)];
+ back = dri3_find_back_alloc(draw);
+
+ mtx_lock(&draw->mtx);
if (draw->is_different_gpu && back) {
/* Update the linear buffer before presenting the pixmap */
- draw->ext->image->blitImage(dri_context,
- back->linear_buffer,
- back->image,
- 0, 0, back->width,
- back->height,
- 0, 0, back->width,
- back->height, __BLIT_FLAG_FLUSH);
- /* Update the fake front */
- if (draw->have_fake_front)
- draw->ext->image->blitImage(dri_context,
- draw->buffers[LOADER_DRI3_FRONT_ID]->image,
- back->image,
- 0, 0, draw->width, draw->height,
- 0, 0, draw->width, draw->height,
- __BLIT_FLAG_FLUSH);
+ (void) loader_dri3_blit_image(draw,
+ back->linear_buffer,
+ back->image,
+ 0, 0, back->width, back->height,
+ 0, 0, __BLIT_FLAG_FLUSH);
+ }
+
+ /* If we need to preload the new back buffer, remember the source.
+ * The force_copy parameter is used by EGL to attempt to preserve
+ * the back buffer across a call to this function.
+ */
+ if (draw->swap_method != __DRI_ATTRIB_SWAP_UNDEFINED || force_copy)
+ draw->cur_blit_source = LOADER_DRI3_BACK_ID(draw->cur_back);
+
+ /* Exchange the back and fake front. Even though the server knows about these
+ * buffers, it has no notion of back and fake front.
+ */
+ if (back && draw->have_fake_front) {
+ struct loader_dri3_buffer *tmp;
+
+ tmp = dri3_fake_front_buffer(draw);
+ draw->buffers[LOADER_DRI3_FRONT_ID] = back;
+ draw->buffers[LOADER_DRI3_BACK_ID(draw->cur_back)] = tmp;
+
+ if (draw->swap_method == __DRI_ATTRIB_SWAP_COPY || force_copy)
+ draw->cur_blit_source = LOADER_DRI3_FRONT_ID;
}
dri3_flush_present_events(draw);
*/
if (draw->swap_interval == 0)
options |= XCB_PRESENT_OPTION_ASYNC;
- if (force_copy)
- options |= XCB_PRESENT_OPTION_COPY;
+
+ /* If we need to populate the new back, but need to reuse the back
+ * buffer slot due to lack of local blit capabilities, make sure
+ * the server doesn't flip and we deadlock.
+ */
+ if (!loader_dri3_have_image_blit(draw) && draw->cur_blit_source != -1)
+ options |= XCB_PRESENT_OPTION_COPY;
back->busy = 1;
back->last_swap = draw->send_sbc;
remainder, 0, NULL);
ret = (int64_t) draw->send_sbc;
- /* If there's a fake front, then copy the source back buffer
- * to the fake front to keep it up to date. This needs
- * to reset the fence and make future users block until
- * the X server is done copying the bits
+ /* Schedule a server-side back-preserving blit if necessary.
+ * This happens iff all conditions below are satisfied:
+ * a) We have a fake front,
+ * b) We need to preserve the back buffer,
+ * c) We don't have local blit capabilities.
*/
- if (draw->have_fake_front && !draw->is_different_gpu) {
- dri3_fence_reset(draw->conn, draw->buffers[LOADER_DRI3_FRONT_ID]);
- dri3_copy_area(draw->conn,
- back->pixmap,
- draw->buffers[LOADER_DRI3_FRONT_ID]->pixmap,
+ if (!loader_dri3_have_image_blit(draw) && draw->cur_blit_source != -1 &&
+ draw->cur_blit_source != LOADER_DRI3_BACK_ID(draw->cur_back)) {
+ struct loader_dri3_buffer *new_back = dri3_back_buffer(draw);
+ struct loader_dri3_buffer *src = draw->buffers[draw->cur_blit_source];
+
+ dri3_fence_reset(draw->conn, new_back);
+ dri3_copy_area(draw->conn, src->pixmap,
+ new_back->pixmap,
dri3_drawable_gc(draw),
- 0, 0, 0, 0,
- draw->width, draw->height);
- dri3_fence_trigger(draw->conn, draw->buffers[LOADER_DRI3_FRONT_ID]);
+ 0, 0, 0, 0, draw->width, draw->height);
+ dri3_fence_trigger(draw->conn, new_back);
+ new_back->last_swap = src->last_swap;
}
+
xcb_flush(draw->conn);
if (draw->stamp)
++(*draw->stamp);
}
+ mtx_unlock(&draw->mtx);
draw->ext->flush->invalidate(draw->dri_drawable);
int
loader_dri3_query_buffer_age(struct loader_dri3_drawable *draw)
{
- int back_id = LOADER_DRI3_BACK_ID(dri3_find_back(draw));
+ struct loader_dri3_buffer *back = dri3_find_back_alloc(draw);
+ int ret;
- if (back_id < 0 || !draw->buffers[back_id])
- return 0;
+ mtx_lock(&draw->mtx);
+ ret = (!back || back->last_swap == 0) ? 0 :
+ draw->send_sbc - back->last_swap + 1;
+ mtx_unlock(&draw->mtx);
- if (draw->buffers[back_id]->last_swap != 0)
- return draw->send_sbc - draw->buffers[back_id]->last_swap + 1;
- else
- return 0;
+ return ret;
}
/** loader_dri3_open
}
}
+/* the DRIimage createImage function takes __DRI_IMAGE_FORMAT codes, while
+ * the createImageFromFds call takes __DRI_IMAGE_FOURCC codes. To avoid
+ * complete confusion, just deal in __DRI_IMAGE_FORMAT codes for now and
+ * translate to __DRI_IMAGE_FOURCC codes in the call to createImageFromFds
+ */
+static int
+image_format_to_fourcc(int format)
+{
+
+ /* Convert from __DRI_IMAGE_FORMAT to __DRI_IMAGE_FOURCC (sigh) */
+ switch (format) {
+ case __DRI_IMAGE_FORMAT_SARGB8: return __DRI_IMAGE_FOURCC_SARGB8888;
+ case __DRI_IMAGE_FORMAT_RGB565: return __DRI_IMAGE_FOURCC_RGB565;
+ case __DRI_IMAGE_FORMAT_XRGB8888: return __DRI_IMAGE_FOURCC_XRGB8888;
+ case __DRI_IMAGE_FORMAT_ARGB8888: return __DRI_IMAGE_FOURCC_ARGB8888;
+ case __DRI_IMAGE_FORMAT_ABGR8888: return __DRI_IMAGE_FOURCC_ABGR8888;
+ case __DRI_IMAGE_FORMAT_XBGR8888: return __DRI_IMAGE_FOURCC_XBGR8888;
+ case __DRI_IMAGE_FORMAT_XRGB2101010: return __DRI_IMAGE_FOURCC_XRGB2101010;
+ case __DRI_IMAGE_FORMAT_ARGB2101010: return __DRI_IMAGE_FOURCC_ARGB2101010;
+ }
+ return 0;
+}
+
/** loader_dri3_alloc_render_buffer
*
* Use the driver createImage function to construct a __DRIimage, then
dri3_update_drawable(__DRIdrawable *driDrawable,
struct loader_dri3_drawable *draw)
{
+ mtx_lock(&draw->mtx);
if (draw->first_init) {
xcb_get_geometry_cookie_t geom_cookie;
xcb_get_geometry_reply_t *geom_reply;
geom_reply = xcb_get_geometry_reply(draw->conn, geom_cookie, NULL);
- if (!geom_reply)
+ if (!geom_reply) {
+ mtx_unlock(&draw->mtx);
return false;
+ }
draw->width = geom_reply->width;
draw->height = geom_reply->height;
if (error) {
if (error->error_code != BadWindow) {
free(error);
+ mtx_unlock(&draw->mtx);
return false;
}
draw->is_pixmap = true;
}
}
dri3_flush_present_events(draw);
+ mtx_unlock(&draw->mtx);
return true;
}
-/* the DRIimage createImage function takes __DRI_IMAGE_FORMAT codes, while
- * the createImageFromFds call takes __DRI_IMAGE_FOURCC codes. To avoid
- * complete confusion, just deal in __DRI_IMAGE_FORMAT codes for now and
- * translate to __DRI_IMAGE_FOURCC codes in the call to createImageFromFds
- */
-static int
-image_format_to_fourcc(int format)
-{
-
- /* Convert from __DRI_IMAGE_FORMAT to __DRI_IMAGE_FOURCC (sigh) */
- switch (format) {
- case __DRI_IMAGE_FORMAT_SARGB8: return __DRI_IMAGE_FOURCC_SARGB8888;
- case __DRI_IMAGE_FORMAT_RGB565: return __DRI_IMAGE_FOURCC_RGB565;
- case __DRI_IMAGE_FORMAT_XRGB8888: return __DRI_IMAGE_FOURCC_XRGB8888;
- case __DRI_IMAGE_FORMAT_ARGB8888: return __DRI_IMAGE_FOURCC_ARGB8888;
- case __DRI_IMAGE_FORMAT_ABGR8888: return __DRI_IMAGE_FOURCC_ABGR8888;
- case __DRI_IMAGE_FORMAT_XBGR8888: return __DRI_IMAGE_FOURCC_XBGR8888;
- }
- return 0;
-}
-
__DRIimage *
loader_dri3_create_image(xcb_connection_t *c,
xcb_dri3_buffer_from_pixmap_reply_t *bp_reply,
ret = image->fromPlanar(image_planar, 0, loaderPrivate);
- image->destroyImage(image_planar);
+ if (!ret)
+ ret = image_planar;
+ else
+ image->destroyImage(image_planar);
return ret;
}
xcb_sync_fence_t sync_fence;
struct xshmfence *shm_fence;
int fence_fd;
- __DRIscreen *cur_screen;
if (buffer)
return buffer;
if (!bp_reply)
goto no_image;
- /* Get the currently-bound screen or revert to using the drawable's screen if
- * no contexts are currently bound. The latter case is at least necessary for
- * obs-studio, when using Window Capture (Xcomposite) as a Source.
- */
- cur_screen = draw->vtable->get_dri_screen(draw);
- if (!cur_screen) {
- cur_screen = draw->dri_screen;
- }
-
buffer->image = loader_dri3_create_image(draw->conn, bp_reply, format,
- cur_screen, draw->ext->image,
+ draw->dri_screen, draw->ext->image,
buffer);
if (!buffer->image)
goto no_image;
buffer->own_pixmap = false;
buffer->width = bp_reply->width;
buffer->height = bp_reply->height;
- buffer->buffer_type = buffer_type;
buffer->shm_fence = shm_fence;
buffer->sync_fence = sync_fence;
{
struct loader_dri3_buffer *buffer;
int buf_id;
- __DRIcontext *dri_context;
-
- dri_context = draw->vtable->get_dri_context(draw);
if (buffer_type == loader_dri3_buffer_back) {
+ draw->back_format = format;
+
buf_id = dri3_find_back(draw);
if (buf_id < 0)
/* When resizing, copy the contents of the old buffer, waiting for that
* copy to complete using our fences before proceeding
*/
- switch (buffer_type) {
- case loader_dri3_buffer_back:
- if (buffer) {
- if (!buffer->linear_buffer) {
- dri3_fence_reset(draw->conn, new_buffer);
- dri3_fence_await(draw->conn, buffer);
- dri3_copy_area(draw->conn,
- buffer->pixmap,
- new_buffer->pixmap,
- dri3_drawable_gc(draw),
- 0, 0, 0, 0,
- draw->width, draw->height);
- dri3_fence_trigger(draw->conn, new_buffer);
- } else if (draw->vtable->in_current_context(draw)) {
- draw->ext->image->blitImage(dri_context,
- new_buffer->image,
- buffer->image,
- 0, 0, draw->width, draw->height,
- 0, 0, draw->width, draw->height, 0);
- }
- dri3_free_render_buffer(draw, buffer);
+ if ((buffer_type == loader_dri3_buffer_back ||
+ (buffer_type == loader_dri3_buffer_front && draw->have_fake_front))
+ && buffer) {
+
+ /* Fill the new buffer with data from an old buffer */
+ dri3_fence_await(draw->conn, draw, buffer);
+ if (!loader_dri3_blit_image(draw,
+ new_buffer->image,
+ buffer->image,
+ 0, 0, draw->width, draw->height,
+ 0, 0, 0) &&
+ !buffer->linear_buffer) {
+ dri3_fence_reset(draw->conn, new_buffer);
+ dri3_copy_area(draw->conn,
+ buffer->pixmap,
+ new_buffer->pixmap,
+ dri3_drawable_gc(draw),
+ 0, 0, 0, 0,
+ draw->width, draw->height);
+ dri3_fence_trigger(draw->conn, new_buffer);
}
- break;
- case loader_dri3_buffer_front:
+ dri3_free_render_buffer(draw, buffer);
+ } else if (buffer_type == loader_dri3_buffer_front) {
+ /* Fill the new fake front with data from a real front */
loader_dri3_swapbuffer_barrier(draw);
dri3_fence_reset(draw->conn, new_buffer);
dri3_copy_area(draw->conn,
draw->width, draw->height);
dri3_fence_trigger(draw->conn, new_buffer);
- if (new_buffer->linear_buffer &&
- draw->vtable->in_current_context(draw)) {
- dri3_fence_await(draw->conn, new_buffer);
- draw->ext->image->blitImage(dri_context,
- new_buffer->image,
- new_buffer->linear_buffer,
- 0, 0, draw->width, draw->height,
- 0, 0, draw->width, draw->height, 0);
+ if (new_buffer->linear_buffer) {
+ dri3_fence_await(draw->conn, draw, new_buffer);
+ (void) loader_dri3_blit_image(draw,
+ new_buffer->image,
+ new_buffer->linear_buffer,
+ 0, 0, draw->width, draw->height,
+ 0, 0, 0);
}
- break;
}
buffer = new_buffer;
- buffer->buffer_type = buffer_type;
draw->buffers[buf_id] = buffer;
}
- dri3_fence_await(draw->conn, buffer);
+ dri3_fence_await(draw->conn, draw, buffer);
+ /*
+ * Do we need to preserve the content of a previous buffer?
+ *
+ * Note that this blit is needed only to avoid a wait for a buffer that
+ * is currently in the flip chain or being scanned out from. That's really
+ * a tradeoff. If we're ok with the wait we can reduce the number of back
+ * buffers to 1 for SWAP_EXCHANGE, and 1 for SWAP_COPY,
+ * but in the latter case we must disallow page-flipping.
+ */
+ if (buffer_type == loader_dri3_buffer_back &&
+ draw->cur_blit_source != -1 &&
+ draw->buffers[draw->cur_blit_source] &&
+ buffer != draw->buffers[draw->cur_blit_source]) {
+
+ struct loader_dri3_buffer *source = draw->buffers[draw->cur_blit_source];
+
+ /* Avoid flushing here. Will propably do good for tiling hardware. */
+ (void) loader_dri3_blit_image(draw,
+ buffer->image,
+ source->image,
+ 0, 0, draw->width, draw->height,
+ 0, 0, 0);
+ buffer->last_swap = source->last_swap;
+ draw->cur_blit_source = -1;
+ }
/* Return the requested buffer */
return buffer;
}
case loader_dri3_buffer_back:
first_id = LOADER_DRI3_BACK_ID(0);
n_id = LOADER_DRI3_MAX_BACK;
+ draw->cur_blit_source = -1;
break;
case loader_dri3_buffer_front:
first_id = LOADER_DRI3_FRONT_ID;
- n_id = 1;
+ /* Don't free a fake front holding new backbuffer content. */
+ n_id = (draw->cur_blit_source == LOADER_DRI3_FRONT_ID) ? 0 : 1;
}
for (buf_id = first_id; buf_id < first_id + n_id; buf_id++) {
if (!dri3_update_drawable(driDrawable, draw))
return false;
- /* pixmaps always have front buffers */
- if (draw->is_pixmap)
+ /* pixmaps always have front buffers.
+ * Exchange swaps also mandate fake front buffers.
+ */
+ if (draw->is_pixmap || draw->swap_method == __DRI_ATTRIB_SWAP_EXCHANGE)
buffer_mask |= __DRI_IMAGE_BUFFER_FRONT;
if (buffer_mask & __DRI_IMAGE_BUFFER_FRONT) {
draw->width = geom_reply->width;
draw->height = geom_reply->height;
draw->vtable->set_drawable_size(draw, draw->width, draw->height);
+ draw->ext->flush->invalidate(draw->dri_drawable);
free(geom_reply);
}
(void) loader_dri3_wait_for_sbc(draw, 0, &ust, &msc, &sbc);
}
+
+/**
+ * Perform any cleanup associated with a close screen operation.
+ * \param dri_screen[in,out] Pointer to __DRIscreen about to be closed.
+ *
+ * This function destroys the screen's cached swap context if any.
+ */
+void
+loader_dri3_close_screen(__DRIscreen *dri_screen)
+{
+ mtx_lock(&blit_context.mtx);
+ if (blit_context.ctx && blit_context.cur_screen == dri_screen) {
+ blit_context.core->destroyContext(blit_context.ctx);
+ blit_context.ctx = NULL;
+ }
+ mtx_unlock(&blit_context.mtx);
+}
+
+/**
+ * Find a backbuffer slot - potentially allocating a back buffer
+ *
+ * \param draw[in,out] Pointer to the drawable for which to find back.
+ * \return Pointer to a new back buffer or NULL if allocation failed or was
+ * not mandated.
+ *
+ * Find a potentially new back buffer, and if it's not been allocated yet and
+ * in addition needs initializing, then try to allocate and initialize it.
+ */
+#include <stdio.h>
+static struct loader_dri3_buffer *
+dri3_find_back_alloc(struct loader_dri3_drawable *draw)
+{
+ struct loader_dri3_buffer *back;
+ int id;
+
+ id = dri3_find_back(draw);
+ if (id < 0)
+ return NULL;
+
+ back = draw->buffers[id];
+ /* Allocate a new back if we haven't got one */
+ if (!back && draw->back_format != __DRI_IMAGE_FORMAT_NONE &&
+ dri3_update_drawable(draw->dri_drawable, draw))
+ back = dri3_alloc_render_buffer(draw, draw->back_format,
+ draw->width, draw->height, draw->depth);
+
+ if (!back)
+ return NULL;
+
+ draw->buffers[id] = back;
+
+ /* If necessary, prefill the back with data according to swap_method mode. */
+ if (draw->cur_blit_source != -1 &&
+ draw->buffers[draw->cur_blit_source] &&
+ back != draw->buffers[draw->cur_blit_source]) {
+ struct loader_dri3_buffer *source = draw->buffers[draw->cur_blit_source];
+
+ dri3_fence_await(draw->conn, draw, source);
+ dri3_fence_await(draw->conn, draw, back);
+ (void) loader_dri3_blit_image(draw,
+ back->image,
+ source->image,
+ 0, 0, draw->width, draw->height,
+ 0, 0, 0);
+ back->last_swap = source->last_swap;
+ draw->cur_blit_source = -1;
+ }
+
+ return back;
+}