/**************************************************************************
*
* Copyright 2016 Advanced Micro Devices, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include <fcntl.h>
#include <X11/Xlib-xcb.h>
#include <X11/xshmfence.h>
#include <xcb/dri3.h>
#include <xcb/present.h>
#include <xcb/xfixes.h>
#include "loader.h"
#include "pipe/p_screen.h"
#include "pipe/p_state.h"
#include "pipe-loader/pipe_loader.h"
#include "util/u_memory.h"
#include "util/u_inlines.h"
#include "vl/vl_compositor.h"
#include "vl/vl_winsys.h"
#define BACK_BUFFER_NUM 3
struct vl_dri3_buffer
{
struct pipe_resource *texture;
struct pipe_resource *linear_texture;
uint32_t pixmap;
uint32_t sync_fence;
struct xshmfence *shm_fence;
bool busy;
uint32_t width, height, pitch;
};
struct vl_dri3_screen
{
struct vl_screen base;
xcb_connection_t *conn;
xcb_drawable_t drawable;
uint32_t width, height, depth;
xcb_present_event_t eid;
xcb_special_event_t *special_event;
struct pipe_context *pipe;
struct pipe_resource *output_texture;
uint32_t clip_width, clip_height;
struct vl_dri3_buffer *back_buffers[BACK_BUFFER_NUM];
int cur_back;
int next_back;
struct u_rect dirty_areas[BACK_BUFFER_NUM];
struct vl_dri3_buffer *front_buffer;
bool is_pixmap;
uint32_t send_msc_serial, recv_msc_serial;
uint64_t send_sbc, recv_sbc;
int64_t last_ust, ns_frame, last_msc, next_msc;
bool flushed;
bool is_different_gpu;
};
static void
dri3_free_front_buffer(struct vl_dri3_screen *scrn,
struct vl_dri3_buffer *buffer)
{
xcb_sync_destroy_fence(scrn->conn, buffer->sync_fence);
xshmfence_unmap_shm(buffer->shm_fence);
pipe_resource_reference(&buffer->texture, NULL);
FREE(buffer);
}
static void
dri3_free_back_buffer(struct vl_dri3_screen *scrn,
struct vl_dri3_buffer *buffer)
{
xcb_free_pixmap(scrn->conn, buffer->pixmap);
xcb_sync_destroy_fence(scrn->conn, buffer->sync_fence);
xshmfence_unmap_shm(buffer->shm_fence);
if (!scrn->output_texture)
pipe_resource_reference(&buffer->texture, NULL);
if (buffer->linear_texture)
pipe_resource_reference(&buffer->linear_texture, NULL);
FREE(buffer);
}
static void
dri3_handle_stamps(struct vl_dri3_screen *scrn, uint64_t ust, uint64_t msc)
{
int64_t ust_ns = ust * 1000;
if (scrn->last_ust && (ust_ns > scrn->last_ust) &&
scrn->last_msc && (msc > scrn->last_msc))
scrn->ns_frame = (ust_ns - scrn->last_ust) / (msc - scrn->last_msc);
scrn->last_ust = ust_ns;
scrn->last_msc = msc;
}
static void
dri3_handle_present_event(struct vl_dri3_screen *scrn,
xcb_present_generic_event_t *ge)
{
switch (ge->evtype) {
case XCB_PRESENT_CONFIGURE_NOTIFY: {
xcb_present_configure_notify_event_t *ce = (void *) ge;
scrn->width = ce->width;
scrn->height = ce->height;
break;
}
case XCB_PRESENT_COMPLETE_NOTIFY: {
xcb_present_complete_notify_event_t *ce = (void *) ge;
if (ce->kind == XCB_PRESENT_COMPLETE_KIND_PIXMAP) {
scrn->recv_sbc = (scrn->send_sbc & 0xffffffff00000000LL) | ce->serial;
if (scrn->recv_sbc > scrn->send_sbc)
scrn->recv_sbc -= 0x100000000;
dri3_handle_stamps(scrn, ce->ust, ce->msc);
} else if (ce->kind == XCB_PRESENT_COMPLETE_KIND_NOTIFY_MSC) {
scrn->recv_msc_serial = ce->serial;
dri3_handle_stamps(scrn, ce->ust, ce->msc);
}
break;
}
case XCB_PRESENT_EVENT_IDLE_NOTIFY: {
xcb_present_idle_notify_event_t *ie = (void *) ge;
int b;
for (b = 0; b < BACK_BUFFER_NUM; b++) {
struct vl_dri3_buffer *buf = scrn->back_buffers[b];
if (buf && buf->pixmap == ie->pixmap) {
buf->busy = false;
break;
}
}
break;
}
}
free(ge);
}
static void
dri3_flush_present_events(struct vl_dri3_screen *scrn)
{
if (scrn->special_event) {
xcb_generic_event_t *ev;
while ((ev = xcb_poll_for_special_event(
scrn->conn, scrn->special_event)) != NULL)
dri3_handle_present_event(scrn, (xcb_present_generic_event_t *)ev);
}
}
static bool
dri3_wait_present_events(struct vl_dri3_screen *scrn)
{
if (scrn->special_event) {
xcb_generic_event_t *ev;
ev = xcb_wait_for_special_event(scrn->conn, scrn->special_event);
if (!ev)
return false;
dri3_handle_present_event(scrn, (xcb_present_generic_event_t *)ev);
return true;
}
return false;
}
static int
dri3_find_back(struct vl_dri3_screen *scrn)
{
int b;
for (;;) {
for (b = 0; b < BACK_BUFFER_NUM; b++) {
int id = (b + scrn->cur_back) % BACK_BUFFER_NUM;
struct vl_dri3_buffer *buffer = scrn->back_buffers[id];
if (!buffer || !buffer->busy)
return id;
}
xcb_flush(scrn->conn);
if (!dri3_wait_present_events(scrn))
return -1;
}
}
static struct vl_dri3_buffer *
dri3_alloc_back_buffer(struct vl_dri3_screen *scrn)
{
struct vl_dri3_buffer *buffer;
xcb_pixmap_t pixmap;
xcb_sync_fence_t sync_fence;
struct xshmfence *shm_fence;
int buffer_fd, fence_fd;
struct pipe_resource templ, *pixmap_buffer_texture;
struct winsys_handle whandle;
unsigned usage;
buffer = CALLOC_STRUCT(vl_dri3_buffer);
if (!buffer)
return NULL;
fence_fd = xshmfence_alloc_shm();
if (fence_fd < 0)
goto free_buffer;
shm_fence = xshmfence_map_shm(fence_fd);
if (!shm_fence)
goto close_fd;
memset(&templ, 0, sizeof(templ));
templ.bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
templ.format = PIPE_FORMAT_B8G8R8X8_UNORM;
templ.target = PIPE_TEXTURE_2D;
templ.last_level = 0;
templ.width0 = (scrn->output_texture) ?
scrn->output_texture->width0 : scrn->width;
templ.height0 = (scrn->output_texture) ?
scrn->output_texture->height0 : scrn->height;
templ.depth0 = 1;
templ.array_size = 1;
if (scrn->is_different_gpu) {
buffer->texture = (scrn->output_texture) ? scrn->output_texture :
scrn->base.pscreen->resource_create(scrn->base.pscreen, &templ);
if (!buffer->texture)
goto unmap_shm;
templ.bind |= PIPE_BIND_SCANOUT | PIPE_BIND_SHARED |
PIPE_BIND_LINEAR;
buffer->linear_texture =
scrn->base.pscreen->resource_create(scrn->base.pscreen, &templ);
pixmap_buffer_texture = buffer->linear_texture;
if (!buffer->linear_texture)
goto no_linear_texture;
} else {
templ.bind |= PIPE_BIND_SCANOUT | PIPE_BIND_SHARED;
buffer->texture = (scrn->output_texture) ? scrn->output_texture :
scrn->base.pscreen->resource_create(scrn->base.pscreen, &templ);
if (!buffer->texture)
goto unmap_shm;
pixmap_buffer_texture = buffer->texture;
}
memset(&whandle, 0, sizeof(whandle));
whandle.type= DRM_API_HANDLE_TYPE_FD;
usage = PIPE_HANDLE_USAGE_EXPLICIT_FLUSH | PIPE_HANDLE_USAGE_READ;
scrn->base.pscreen->resource_get_handle(scrn->base.pscreen, NULL,
pixmap_buffer_texture, &whandle,
usage);
buffer_fd = whandle.handle;
buffer->pitch = whandle.stride;
buffer->width = templ.width0;
buffer->height = templ.height0;
xcb_dri3_pixmap_from_buffer(scrn->conn,
(pixmap = xcb_generate_id(scrn->conn)),
scrn->drawable,
0,
buffer->width, buffer->height, buffer->pitch,
scrn->depth, 32,
buffer_fd);
xcb_dri3_fence_from_fd(scrn->conn,
pixmap,
(sync_fence = xcb_generate_id(scrn->conn)),
false,
fence_fd);
buffer->pixmap = pixmap;
buffer->sync_fence = sync_fence;
buffer->shm_fence = shm_fence;
xshmfence_trigger(buffer->shm_fence);
return buffer;
no_linear_texture:
pipe_resource_reference(&buffer->texture, NULL);
unmap_shm:
xshmfence_unmap_shm(shm_fence);
close_fd:
close(fence_fd);
free_buffer:
FREE(buffer);
return NULL;
}
static struct vl_dri3_buffer *
dri3_get_back_buffer(struct vl_dri3_screen *scrn)
{
struct vl_dri3_buffer *buffer;
struct pipe_resource *texture = NULL;
bool allocate_new_buffer = false;
int b, id;
assert(scrn);
scrn->cur_back = dri3_find_back(scrn);
if (scrn->cur_back < 0)
return NULL;
buffer = scrn->back_buffers[scrn->cur_back];
if (scrn->output_texture) {
if (!buffer || buffer->width < scrn->width ||
buffer->height < scrn->height)
allocate_new_buffer = true;
else if (scrn->is_different_gpu)
/* In case of different gpu we can reuse the linear
* texture so we only need to set the external
* texture for copying
*/
buffer->texture = scrn->output_texture;
else {
/* In case of a single gpu we search if the texture is
* already present as buffer if not we get the
* handle and pixmap for the texture that is set
*/
for (b = 0; b < BACK_BUFFER_NUM; b++) {
id = (b + scrn->cur_back) % BACK_BUFFER_NUM;
buffer = scrn->back_buffers[id];
if (buffer && !buffer->busy &&
buffer->texture == scrn->output_texture) {
scrn->cur_back = id;
break;
}
}
if (b == BACK_BUFFER_NUM) {
allocate_new_buffer = true;
scrn->cur_back = scrn->next_back;
scrn->next_back = (scrn->next_back + 1) % BACK_BUFFER_NUM;
buffer = scrn->back_buffers[scrn->cur_back];
}
}
} else {
if (!buffer || buffer->width != scrn->width ||
buffer->height != scrn->height)
allocate_new_buffer = true;
}
if (allocate_new_buffer) {
struct vl_dri3_buffer *new_buffer;
new_buffer = dri3_alloc_back_buffer(scrn);
if (!new_buffer)
return NULL;
if (buffer)
dri3_free_back_buffer(scrn, buffer);
if (!scrn->output_texture)
vl_compositor_reset_dirty_area(&scrn->dirty_areas[scrn->cur_back]);
buffer = new_buffer;
scrn->back_buffers[scrn->cur_back] = buffer;
}
pipe_resource_reference(&texture, buffer->texture);
xcb_flush(scrn->conn);
xshmfence_await(buffer->shm_fence);
return buffer;
}
static bool
dri3_set_drawable(struct vl_dri3_screen *scrn, Drawable drawable)
{
xcb_get_geometry_cookie_t geom_cookie;
xcb_get_geometry_reply_t *geom_reply;
xcb_void_cookie_t cookie;
xcb_generic_error_t *error;
bool ret = true;
assert(drawable);
if (scrn->drawable == drawable)
return true;
scrn->drawable = drawable;
geom_cookie = xcb_get_geometry(scrn->conn, scrn->drawable);
geom_reply = xcb_get_geometry_reply(scrn->conn, geom_cookie, NULL);
if (!geom_reply)
return false;
scrn->width = geom_reply->width;
scrn->height = geom_reply->height;
scrn->depth = geom_reply->depth;
free(geom_reply);
if (scrn->special_event) {
xcb_unregister_for_special_event(scrn->conn, scrn->special_event);
scrn->special_event = NULL;
cookie = xcb_present_select_input_checked(scrn->conn, scrn->eid,
scrn->drawable,
XCB_PRESENT_EVENT_MASK_NO_EVENT);
xcb_discard_reply(scrn->conn, cookie.sequence);
}
scrn->is_pixmap = false;
scrn->eid = xcb_generate_id(scrn->conn);
cookie =
xcb_present_select_input_checked(scrn->conn, scrn->eid, scrn->drawable,
XCB_PRESENT_EVENT_MASK_CONFIGURE_NOTIFY |
XCB_PRESENT_EVENT_MASK_COMPLETE_NOTIFY |
XCB_PRESENT_EVENT_MASK_IDLE_NOTIFY);
error = xcb_request_check(scrn->conn, cookie);
if (error) {
if (error->error_code != BadWindow)
ret = false;
else {
scrn->is_pixmap = true;
if (scrn->front_buffer) {
dri3_free_front_buffer(scrn, scrn->front_buffer);
scrn->front_buffer = NULL;
}
}
free(error);
} else
scrn->special_event =
xcb_register_for_special_xge(scrn->conn, &xcb_present_id, scrn->eid, 0);
dri3_flush_present_events(scrn);
return ret;
}
static struct vl_dri3_buffer *
dri3_get_front_buffer(struct vl_dri3_screen *scrn)
{
xcb_dri3_buffer_from_pixmap_cookie_t bp_cookie;
xcb_dri3_buffer_from_pixmap_reply_t *bp_reply;
xcb_sync_fence_t sync_fence;
struct xshmfence *shm_fence;
int fence_fd, *fds;
struct winsys_handle whandle;
struct pipe_resource templ, *texture = NULL;
if (scrn->front_buffer) {
pipe_resource_reference(&texture, scrn->front_buffer->texture);
return scrn->front_buffer;
}
scrn->front_buffer = CALLOC_STRUCT(vl_dri3_buffer);
if (!scrn->front_buffer)
return NULL;
fence_fd = xshmfence_alloc_shm();
if (fence_fd < 0)
goto free_buffer;
shm_fence = xshmfence_map_shm(fence_fd);
if (!shm_fence)
goto close_fd;
bp_cookie = xcb_dri3_buffer_from_pixmap(scrn->conn, scrn->drawable);
bp_reply = xcb_dri3_buffer_from_pixmap_reply(scrn->conn, bp_cookie, NULL);
if (!bp_reply)
goto unmap_shm;
fds = xcb_dri3_buffer_from_pixmap_reply_fds(scrn->conn, bp_reply);
if (fds[0] < 0)
goto free_reply;
memset(&whandle, 0, sizeof(whandle));
whandle.type = DRM_API_HANDLE_TYPE_FD;
whandle.handle = (unsigned)fds[0];
whandle.stride = bp_reply->stride;
memset(&templ, 0, sizeof(templ));
templ.bind = PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW;
templ.format = PIPE_FORMAT_B8G8R8X8_UNORM;
templ.target = PIPE_TEXTURE_2D;
templ.last_level = 0;
templ.width0 = bp_reply->width;
templ.height0 = bp_reply->height;
templ.depth0 = 1;
templ.array_size = 1;
scrn->front_buffer->texture =
scrn->base.pscreen->resource_from_handle(scrn->base.pscreen,
&templ, &whandle,
PIPE_HANDLE_USAGE_READ_WRITE);
close(fds[0]);
if (!scrn->front_buffer->texture)
goto free_reply;
xcb_dri3_fence_from_fd(scrn->conn,
scrn->drawable,
(sync_fence = xcb_generate_id(scrn->conn)),
false,
fence_fd);
pipe_resource_reference(&texture, scrn->front_buffer->texture);
scrn->front_buffer->pixmap = scrn->drawable;
scrn->front_buffer->width = bp_reply->width;
scrn->front_buffer->height = bp_reply->height;
scrn->front_buffer->shm_fence = shm_fence;
scrn->front_buffer->sync_fence = sync_fence;
free(bp_reply);
return scrn->front_buffer;
free_reply:
free(bp_reply);
unmap_shm:
xshmfence_unmap_shm(shm_fence);
close_fd:
close(fence_fd);
free_buffer:
FREE(scrn->front_buffer);
return NULL;
}
static void
vl_dri3_flush_frontbuffer(struct pipe_screen *screen,
struct pipe_resource *resource,
unsigned level, unsigned layer,
void *context_private, struct pipe_box *sub_box)
{
struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)context_private;
uint32_t options = XCB_PRESENT_OPTION_NONE;
struct vl_dri3_buffer *back;
struct pipe_box src_box;
xcb_xfixes_region_t region;
xcb_rectangle_t rectangle;
back = scrn->back_buffers[scrn->cur_back];
if (!back)
return;
if (scrn->flushed) {
while (scrn->special_event && scrn->recv_sbc < scrn->send_sbc)
if (!dri3_wait_present_events(scrn))
return;
}
rectangle.x = 0;
rectangle.y = 0;
rectangle.width = (scrn->output_texture) ? scrn->clip_width : scrn->width;
rectangle.height = (scrn->output_texture) ? scrn->clip_height : scrn->height;
region = xcb_generate_id(scrn->conn);
xcb_xfixes_create_region(scrn->conn, region, 2, &rectangle);
if (scrn->is_different_gpu) {
u_box_origin_2d(back->width, back->height, &src_box);
scrn->pipe->resource_copy_region(scrn->pipe,
back->linear_texture,
0, 0, 0, 0,
back->texture,
0, &src_box);
scrn->pipe->flush(scrn->pipe, NULL, 0);
}
xshmfence_reset(back->shm_fence);
back->busy = true;
xcb_present_pixmap(scrn->conn,
scrn->drawable,
back->pixmap,
(uint32_t)(++scrn->send_sbc),
0, region, 0, 0,
None, None,
back->sync_fence,
options,
scrn->next_msc,
0, 0, 0, NULL);
xcb_flush(scrn->conn);
scrn->flushed = true;
return;
}
static struct pipe_resource *
vl_dri3_screen_texture_from_drawable(struct vl_screen *vscreen, void *drawable)
{
struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)vscreen;
struct vl_dri3_buffer *buffer;
assert(scrn);
if (!dri3_set_drawable(scrn, (Drawable)drawable))
return NULL;
if (scrn->flushed) {
while (scrn->special_event && scrn->recv_sbc < scrn->send_sbc)
if (!dri3_wait_present_events(scrn))
return NULL;
}
scrn->flushed = false;
buffer = (scrn->is_pixmap) ?
dri3_get_front_buffer(scrn) :
dri3_get_back_buffer(scrn);
if (!buffer)
return NULL;
return buffer->texture;
}
static struct u_rect *
vl_dri3_screen_get_dirty_area(struct vl_screen *vscreen)
{
struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)vscreen;
assert(scrn);
return &scrn->dirty_areas[scrn->cur_back];
}
static uint64_t
vl_dri3_screen_get_timestamp(struct vl_screen *vscreen, void *drawable)
{
struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)vscreen;
assert(scrn);
if (!dri3_set_drawable(scrn, (Drawable)drawable))
return 0;
if (!scrn->last_ust) {
xcb_present_notify_msc(scrn->conn,
scrn->drawable,
++scrn->send_msc_serial,
0, 0, 0);
xcb_flush(scrn->conn);
while (scrn->special_event &&
scrn->send_msc_serial > scrn->recv_msc_serial) {
if (!dri3_wait_present_events(scrn))
return 0;
}
}
return scrn->last_ust;
}
static void
vl_dri3_screen_set_next_timestamp(struct vl_screen *vscreen, uint64_t stamp)
{
struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)vscreen;
assert(scrn);
if (stamp && scrn->last_ust && scrn->ns_frame && scrn->last_msc)
scrn->next_msc = ((int64_t)stamp - scrn->last_ust + scrn->ns_frame/2) /
scrn->ns_frame + scrn->last_msc;
else
scrn->next_msc = 0;
}
static void *
vl_dri3_screen_get_private(struct vl_screen *vscreen)
{
return vscreen;
}
static void
vl_dri3_screen_set_back_texture_from_output(struct vl_screen *vscreen,
struct pipe_resource *buffer,
uint32_t width, uint32_t height)
{
struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)vscreen;
assert(scrn);
scrn->output_texture = buffer;
scrn->clip_width = (width) ? width : scrn->width;
scrn->clip_height = (height) ? height : scrn->height;
}
static void
vl_dri3_screen_destroy(struct vl_screen *vscreen)
{
struct vl_dri3_screen *scrn = (struct vl_dri3_screen *)vscreen;
int i;
assert(vscreen);
dri3_flush_present_events(scrn);
if (scrn->front_buffer) {
dri3_free_front_buffer(scrn, scrn->front_buffer);
scrn->front_buffer = NULL;
return;
}
for (i = 0; i < BACK_BUFFER_NUM; ++i) {
if (scrn->back_buffers[i]) {
dri3_free_back_buffer(scrn, scrn->back_buffers[i]);
scrn->back_buffers[i] = NULL;
}
}
if (scrn->special_event) {
xcb_void_cookie_t cookie =
xcb_present_select_input_checked(scrn->conn, scrn->eid,
scrn->drawable,
XCB_PRESENT_EVENT_MASK_NO_EVENT);
xcb_discard_reply(scrn->conn, cookie.sequence);
xcb_unregister_for_special_event(scrn->conn, scrn->special_event);
}
scrn->pipe->destroy(scrn->pipe);
scrn->base.pscreen->destroy(scrn->base.pscreen);
pipe_loader_release(&scrn->base.dev, 1);
FREE(scrn);
return;
}
struct vl_screen *
vl_dri3_screen_create(Display *display, int screen)
{
struct vl_dri3_screen *scrn;
const xcb_query_extension_reply_t *extension;
xcb_dri3_open_cookie_t open_cookie;
xcb_dri3_open_reply_t *open_reply;
xcb_get_geometry_cookie_t geom_cookie;
xcb_get_geometry_reply_t *geom_reply;
xcb_xfixes_query_version_cookie_t xfixes_cookie;
xcb_xfixes_query_version_reply_t *xfixes_reply;
xcb_generic_error_t *error;
int fd;
assert(display);
scrn = CALLOC_STRUCT(vl_dri3_screen);
if (!scrn)
return NULL;
scrn->conn = XGetXCBConnection(display);
if (!scrn->conn)
goto free_screen;
xcb_prefetch_extension_data(scrn->conn , &xcb_dri3_id);
xcb_prefetch_extension_data(scrn->conn, &xcb_present_id);
xcb_prefetch_extension_data (scrn->conn, &xcb_xfixes_id);
extension = xcb_get_extension_data(scrn->conn, &xcb_dri3_id);
if (!(extension && extension->present))
goto free_screen;
extension = xcb_get_extension_data(scrn->conn, &xcb_present_id);
if (!(extension && extension->present))
goto free_screen;
extension = xcb_get_extension_data(scrn->conn, &xcb_xfixes_id);
if (!(extension && extension->present))
goto free_screen;
xfixes_cookie = xcb_xfixes_query_version(scrn->conn, XCB_XFIXES_MAJOR_VERSION,
XCB_XFIXES_MINOR_VERSION);
xfixes_reply = xcb_xfixes_query_version_reply(scrn->conn, xfixes_cookie, &error);
if (!xfixes_reply || error || xfixes_reply->major_version < 2) {
free(error);
free(xfixes_reply);
goto free_screen;
}
free(xfixes_reply);
open_cookie = xcb_dri3_open(scrn->conn, RootWindow(display, screen), None);
open_reply = xcb_dri3_open_reply(scrn->conn, open_cookie, NULL);
if (!open_reply)
goto free_screen;
if (open_reply->nfd != 1) {
free(open_reply);
goto free_screen;
}
fd = xcb_dri3_open_reply_fds(scrn->conn, open_reply)[0];
if (fd < 0) {
free(open_reply);
goto free_screen;
}
fcntl(fd, F_SETFD, FD_CLOEXEC);
free(open_reply);
fd = loader_get_user_preferred_fd(fd, &scrn->is_different_gpu);
geom_cookie = xcb_get_geometry(scrn->conn, RootWindow(display, screen));
geom_reply = xcb_get_geometry_reply(scrn->conn, geom_cookie, NULL);
if (!geom_reply)
goto close_fd;
/* TODO support depth other than 24 */
if (geom_reply->depth != 24) {
free(geom_reply);
goto close_fd;
}
free(geom_reply);
if (pipe_loader_drm_probe_fd(&scrn->base.dev, fd))
scrn->base.pscreen = pipe_loader_create_screen(scrn->base.dev);
if (!scrn->base.pscreen)
goto release_pipe;
scrn->pipe = scrn->base.pscreen->context_create(scrn->base.pscreen,
NULL, 0);
if (!scrn->pipe)
goto no_context;
scrn->base.destroy = vl_dri3_screen_destroy;
scrn->base.texture_from_drawable = vl_dri3_screen_texture_from_drawable;
scrn->base.get_dirty_area = vl_dri3_screen_get_dirty_area;
scrn->base.get_timestamp = vl_dri3_screen_get_timestamp;
scrn->base.set_next_timestamp = vl_dri3_screen_set_next_timestamp;
scrn->base.get_private = vl_dri3_screen_get_private;
scrn->base.pscreen->flush_frontbuffer = vl_dri3_flush_frontbuffer;
scrn->base.set_back_texture_from_output = vl_dri3_screen_set_back_texture_from_output;
scrn->next_back = 1;
return &scrn->base;
no_context:
scrn->base.pscreen->destroy(scrn->base.pscreen);
release_pipe:
if (scrn->base.dev) {
pipe_loader_release(&scrn->base.dev, 1);
fd = -1;
}
close_fd:
if (fd != -1)
close(fd);
free_screen:
FREE(scrn);
return NULL;
}