/** dri3_free_buffers
*
* Free the front bufffer or all of the back buffers. Used
* when the application changes which buffers it needs
*/
static void
dri3_free_buffers(__DRIdrawable *driDrawable,
enum loader_dri3_buffer_type buffer_type,
struct loader_dri3_drawable *draw)
{
struct loader_dri3_buffer *buffer;
int first_id;
int n_id;
int buf_id;
switch (buffer_type) {
case loader_dri3_buffer_back:
first_id = LOADER_DRI3_BACK_ID(0);
n_id = LOADER_DRI3_MAX_BACK;
break;
case loader_dri3_buffer_front:
first_id = LOADER_DRI3_FRONT_ID;
n_id = 1;
}
for (buf_id = first_id; buf_id < first_id + n_id; buf_id++) {
buffer = draw->buffers[buf_id];
if (buffer) {
dri3_free_render_buffer(draw, buffer);
draw->buffers[buf_id] = NULL;
}
}
}
void
loader_dri3_drawable_fini(struct loader_dri3_drawable *draw)
{
int i;
(draw->ext->core->destroyDrawable)(draw->dri_drawable);
for (i = 0; i < LOADER_DRI3_NUM_BUFFERS; i++) {
if (draw->buffers[i])
dri3_free_render_buffer(draw, draw->buffers[i]);
}
if (draw->special_event)
xcb_unregister_for_special_event(draw->conn, draw->special_event);
}
void
loader_dri3_drawable_fini(struct loader_dri3_drawable *draw)
{
int i;
(draw->ext->core->destroyDrawable)(draw->dri_drawable);
for (i = 0; i < LOADER_DRI3_NUM_BUFFERS; i++) {
if (draw->buffers[i])
dri3_free_render_buffer(draw, draw->buffers[i]);
}
if (draw->special_event) {
xcb_void_cookie_t cookie =
xcb_present_select_input_checked(draw->conn, draw->eid, draw->drawable,
XCB_PRESENT_EVENT_MASK_NO_EVENT);
xcb_discard_reply(draw->conn, cookie.sequence);
xcb_unregister_for_special_event(draw->conn, draw->special_event);
}
}
/*
* Process one Present event
*/
static void
dri3_handle_present_event(struct loader_dri3_drawable *draw,
xcb_present_generic_event_t *ge)
{
switch (ge->evtype) {
case XCB_PRESENT_CONFIGURE_NOTIFY: {
xcb_present_configure_notify_event_t *ce = (void *) ge;
draw->width = ce->width;
draw->height = ce->height;
draw->vtable->set_drawable_size(draw, draw->width, draw->height);
break;
}
case XCB_PRESENT_COMPLETE_NOTIFY: {
xcb_present_complete_notify_event_t *ce = (void *) ge;
/* Compute the processed SBC number from the received 32-bit serial number
* merged with the upper 32-bits of the sent 64-bit serial number while
* checking for wrap.
*/
if (ce->kind == XCB_PRESENT_COMPLETE_KIND_PIXMAP) {
draw->recv_sbc = (draw->send_sbc & 0xffffffff00000000LL) | ce->serial;
if (draw->recv_sbc > draw->send_sbc)
draw->recv_sbc -= 0x100000000;
switch (ce->mode) {
case XCB_PRESENT_COMPLETE_MODE_FLIP:
draw->flipping = true;
break;
case XCB_PRESENT_COMPLETE_MODE_COPY:
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;
draw->notify_ust = ce->ust;
draw->notify_msc = ce->msc;
}
break;
}
case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
xcb_present_idle_notify_event_t *ie = (void *) ge;
int b;
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) {
buf->busy = 0;
if (draw->num_back <= b && b < LOADER_DRI3_MAX_BACK) {
dri3_free_render_buffer(draw, buf);
draw->buffers[b] = NULL;
}
break;
}
}
break;
}
}
free(ge);
}
/** dri3_get_buffer
*
* Find a front or back buffer, allocating new ones as necessary
*/
static struct loader_dri3_buffer *
dri3_get_buffer(__DRIdrawable *driDrawable,
unsigned int format,
enum loader_dri3_buffer_type buffer_type,
struct loader_dri3_drawable *draw)
{
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) {
buf_id = dri3_find_back(draw);
if (buf_id < 0)
return NULL;
} else {
buf_id = LOADER_DRI3_FRONT_ID;
}
buffer = draw->buffers[buf_id];
/* Allocate a new buffer if there isn't an old one, or if that
* old one is the wrong size
*/
if (!buffer || buffer->width != draw->width ||
buffer->height != draw->height) {
struct loader_dri3_buffer *new_buffer;
/* Allocate the new buffers
*/
new_buffer = dri3_alloc_render_buffer(draw,
format,
draw->width,
draw->height,
draw->depth);
if (!new_buffer)
return NULL;
/* 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);
}
break;
case loader_dri3_buffer_front:
dri3_fence_reset(draw->conn, new_buffer);
dri3_copy_area(draw->conn,
draw->drawable,
new_buffer->pixmap,
dri3_drawable_gc(draw),
0, 0, 0, 0,
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);
}
break;
}
buffer = new_buffer;
buffer->buffer_type = buffer_type;
draw->buffers[buf_id] = buffer;
}
dri3_fence_await(draw->conn, buffer);
/* Return the requested buffer */
return buffer;
}
