'프로그램 사용/wayland' 카테고리의 글 목록

'프로그램 사용/wayland'에 해당되는 글 38건

weston evdev libinput

디바이스 마다 인식 방법이 차이가 있을줄을 알았지만.. 어우..

struct evdev_device *
evdev_device_create(struct libinput_device *libinput_device,
    struct weston_seat *seat)
{
struct evdev_device *device;

device = zalloc(sizeof *device);
if (device == NULL)
return NULL;
weston_log("%s:%d\n",__func__,__LINE__);
device->seat = seat;
wl_list_init(&device->link);
device->device = libinput_device;

if (libinput_device_has_capability(libinput_device,
   LIBINPUT_DEVICE_CAP_KEYBOARD)) {
weston_seat_init_keyboard(seat, NULL);
device->seat_caps |= EVDEV_SEAT_KEYBOARD;
weston_log("%s:%d\n",__func__,__LINE__);
}
if (libinput_device_has_capability(libinput_device,
   LIBINPUT_DEVICE_CAP_POINTER)) {
weston_seat_init_pointer(seat);
device->seat_caps |= EVDEV_SEAT_POINTER;
weston_log("%s:%d\n",__func__,__LINE__);
}
if (libinput_device_has_capability(libinput_device,
   LIBINPUT_DEVICE_CAP_TOUCH)) {
weston_seat_init_touch(seat);
device->seat_caps |= EVDEV_SEAT_TOUCH;
device->touch_device = create_touch_device(device);
weston_log("%s:%d\n",__func__,__LINE__);
}

libinput_device_set_user_data(libinput_device, device);
libinput_device_ref(libinput_device);

return device;
}

LIBINPUT_EXPORT int
libinput_device_has_capability(struct libinput_device *device,
enum libinput_device_capability capability)
{
return evdev_device_has_capability((struct evdev_device *) device,
capability);
}

[링크 : https://github.com/jadahl/libinput/blob/master/src/libinput.c#L938]

int
evdev_device_has_capability(struct evdev_device *device,
enum libinput_device_capability capability)
{
switch (capability) {
case LIBINPUT_DEVICE_CAP_POINTER:
return !!(device->seat_caps & EVDEV_DEVICE_POINTER);
case LIBINPUT_DEVICE_CAP_KEYBOARD:
return !!(device->seat_caps & EVDEV_DEVICE_KEYBOARD);
case LIBINPUT_DEVICE_CAP_TOUCH:
return !!(device->seat_caps & EVDEV_DEVICE_TOUCH);
default:
return 0;
}
}

[링크 : https://github.com/jadahl/libinput/blob/master/src/evdev.c#L699]

장치별로 인식되는 차이 확인! 커서가 안뜨던 녀석은 touch로 인식

[08:25:22.166] event2  - eGalax Inc. eGalaxTouch P80H84 0900 v12 k4.18.200: is tagged by udev as: Touchscreen
[08:25:22.166] event2  - eGalax Inc. eGalaxTouch P80H84 0900 v12 k4.18.200: device is a touch device
[08:25:22.176] event3  - FHD WebCam: FHD WebCam: is tagged by udev as: Keyboard
[08:25:22.176] event3  - FHD WebCam: FHD WebCam: device is a keyboard
[08:25:22.181] event1  - audio-hdmi HDMI Jack: is tagged by udev as: Switch
[08:25:22.181] event1  - not using input device '/dev/input/event1'
[08:25:22.181] evdev_device_create:856
[08:25:22.208] evdev_device_create:865 // LIBINPUT_DEVICE_CAP_KEYBOARD
[08:25:22.208] libinput: configuring device "30370000.snvs:snvs-powerkey".
[08:25:22.208] evdev_device_create:856
[08:25:22.208] Touchscreen - eGalax Inc. eGalaxTouch P80H84 0900 v12 k4.18.200 - /sys/devices/platform/soc@0/32f10108.usb/38200000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1.3/1-1.3.2/1-1
[08:25:22.208] evdev_device_create:878 // LIBINPUT_DEVICE_CAP_TOUCH
[08:25:22.208] libinput: configuring device "eGalax Inc. eGalaxTouch P80H84 0900 v12 k4.18.200".
[08:25:22.208] input device event2 has no enabled output associated (none named), skipping calibration for now.
[08:25:22.208] evdev_device_create:856
[08:25:22.208] evdev_device_create:865 // LIBINPUT_DEVICE_CAP_KEYBOARD
[08:25:22.208] libinput: configuring device "FHD WebCam: FHD WebCam".
[08:25:22.209] DRM: head 'LVDS-1' found, connector 39 is connected, EDID make 'unknown', model 'unknown', serial 'unknown'
[08:25:22.210] DRM: head 'HDMI-A-1' found, connector 40 is connected, EDID make 'unknown', model 'unknown', serial 'unknown'

얘는 특이하게도 MT protocol B를 쓰더니, 그래서 그런가 pointer와 touch 두 가지로 인식

[08:30:59.219] event5  - eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00 19" UNKNOWN: is tagged by udev as: Mouse
[08:30:59.220] event5  - eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00 19" UNKNOWN: device is a pointer
[08:30:59.221] evdev_device_create:856
[08:30:59.221] evdev_device_create:871 // LIBINPUT_DEVICE_CAP_POINTER
[08:30:59.221] libinput: configuring device "eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00 19" UNKNOWN".
[08:30:59.221] input device event5 has no enabled output associated (none named), skipping calibration for now.
[08:30:59.221] associating input device event5 with output LVDS-1 (none by udev)
[08:30:59.312] event4  - eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00 19": is tagged by udev as: Touchscreen
[08:30:59.312] event4  - eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00 19": device is a touch device
[08:30:59.313] evdev_device_create:856
[08:30:59.313] Touchscreen - eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00 19" - /sys/devices/platform/soc@0/32f10108.usb/38200000.dwc3/xhci-hcd.0.auto/usb1/1-1/1-1.3/1-1.3.1/1-1.3.1:1.0/0003:0EEF:C000.0002/input/input5/event4
[08:30:59.313] evdev_device_create:878 // LIBINPUT_DEVICE_CAP_TOUCH
[08:30:59.313] libinput: configuring device "eGalax Inc. eGalaxTouch EXC3188-3374-08.00.00.00 19"".
[08:30:59.313] input device event4 has no enabled output associated (none named), skipping calibration for now.
[08:30:59.313] associating input device event4 with output LVDS-1 (none by udev)

내가 만든건.. 일단 ABS로 하긴 했지만 pointer 디바이스로 인식..

이제 어떻게 하면 touch로 하냐가 문제네

[08:40:03.449] event4  - vnc virtual keyboard driver: is tagged by udev as: Keyboard
[08:40:03.450] event4  - vnc virtual keyboard driver: device is a keyboard
[08:40:03.450] evdev_device_create:856
[08:40:03.450] evdev_device_create:865 // LIBINPUT_DEVICE_CAP_KEYBOARD
[08:40:03.450] libinput: configuring device "vnc virtual keyboard driver".
[08:40:03.450] associating input device event4 with output LVDS-1 (none by udev)
[08:40:03.453] event5  - TouchPad: is tagged by udev as: Mouse
[08:40:03.453] event5  - TouchPad: device is a pointer
[08:40:03.454] evdev_device_create:856
[08:40:03.454] evdev_device_create:871 // LIBINPUT_DEVICE_CAP_POINTER
[08:40:03.454] libinput: configuring device "TouchPad".
[08:40:03.454] input device event5 has no enabled output associated (none named), skipping calibration for now.
[08:40:03.454] associating input device event5 with output LVDS-1 (none by udev)

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Posted by 구차니

weston 커서 숨기기

weston.ini 에 추가해서 아예 커서를 그리지 않게 하는 방법

static void
pointer_set_cursor(struct wl_client *client, struct wl_resource *resource,
   uint32_t serial, struct wl_resource *surface_resource,
   int32_t x, int32_t y)
{
struct weston_pointer *pointer = wl_resource_get_user_data(resource);
struct weston_surface *surface = NULL;

if (!pointer)
return;

if (surface_resource)
surface = wl_resource_get_user_data(surface_resource);

if (pointer->focus == NULL)
return;
/* pointer->focus->surface->resource can be NULL. Surfaces like the
black_surface used in shell.c for fullscreen don't have
a resource, but can still have focus */
if (pointer->focus->surface->resource == NULL)
return;
if (wl_resource_get_client(pointer->focus->surface->resource) != client)
return;
if (pointer->focus_serial - serial > UINT32_MAX / 2)
return;

if (!surface) {
if (pointer->sprite)
pointer_unmap_sprite(pointer);
return;
}

if (pointer->sprite && pointer->sprite->surface == surface &&
    pointer->hotspot_x == x && pointer->hotspot_y == y)
return;

if (!pointer->sprite || pointer->sprite->surface != surface) {
if (pointer->seat->compositor->hide_cursor)
return;

if (weston_surface_set_role(surface, "wl_pointer-cursor",
    resource,
    WL_POINTER_ERROR_ROLE) < 0)
return;

if (pointer->sprite)
pointer_unmap_sprite(pointer);

wl_signal_add(&surface->destroy_signal,
      &pointer->sprite_destroy_listener);

surface->committed = pointer_cursor_surface_committed;
surface->committed_private = pointer;
weston_surface_set_label_func(surface,
    pointer_cursor_surface_get_label);
pointer->sprite = weston_view_create(surface);
}

pointer->hotspot_x = x;
pointer->hotspot_y = y;

if (surface->buffer_ref.buffer) {
pointer_cursor_surface_committed(surface, 0, 0);
weston_view_schedule_repaint(pointer->sprite);
}
}

[링크 : https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/345/diffs]

[링크 : https://gitlab.freedesktop.org/wayland/weston/-/blob/f964b59c8af8505422cac79de2466e0a31702a0d/libweston/input.c]

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wayland atomic commit 패치? (0)	2022.08.22
weston screen shooter 뜯어보기 (0)	2022.08.17
wayland glreadpixels 실패 (0)	2022.08.16

Posted by 구차니

wayland hdmi - touch 연결

윈도우와는 다르게 리눅스에서는

HDMI + touch를 연결하면 자꾸 0번 디스플레이와 새로 연결된 터치가 연결된다.

윈도우에서 지금까진 안맞는적은 없었는데, 연결방법 글이 있는걸 보면 아주 없진 않나보다.

아무튼 윈도우는 어떤 시나리오로 되길래 외부 모니터와 touch를 잘 매칭해주는진 모르겠지만

[링크 : https://comterman.tistory.com/2738]

wayland 나 x.org 에서는 영~ 매칭이 잘 안된다.

화면 찢어짐 때문에 wayland로 해놨는데 그 여파로 따라해봐도 스크린에 터치가 옮겨가진 않는다.

[링크 : https://askubuntu.com/questions/71768/touchscreen-and-additional-external-monitor]

[링크 : https://unix.stackexchange.com/questions/473721/calibrating-a-touch-screen-on-dual-monitors-one-touch-one-not]

libinput-device.c를 보면 아래 함수 두개에 associated 용어를 표현하며

입력 장치를 evdev의 이벤트를 통해 연결하는데, 회사에서 시험해볼때는

touch 장치 쪽에서 연결할 스크린 명칭을 넣어주지 않아서인지 제대로 연결되는걸 못 본 듯.

void

evdev_device_set_calibration(struct evdev_device *device)

{

struct udev *udev;

struct udev_device *udev_device = NULL;

const char *sysname = libinput_device_get_sysname(device->device);

const char *calibration_values;

uint32_t width, height;

struct weston_touch_device_matrix calibration;

if (!libinput_device_config_calibration_has_matrix(device->device))

return;

/* If LIBINPUT_CALIBRATION_MATRIX was set to non-identity, we will not

* override it with WL_CALIBRATION. It also means we don't need an

* output to load a calibration. */

if (libinput_device_config_calibration_get_default_matrix(

device->device,

calibration.m) != 0)

return;

/* touch_set_calibration() has updated the values, do not load old

* values from WL_CALIBRATION.

*/

if (device->override_wl_calibration)

return;

if (!device->output) {

weston_log("input device %s has no enabled output associated "

"(%s named), skipping calibration for now.\n",

sysname, device->output_name ?: "none");

return;

}

void

evdev_device_set_output(struct evdev_device *device,

struct weston_output *output)

{

if (device->output == output)

return;

if (device->output_destroy_listener.notify) {

wl_list_remove(&device->output_destroy_listener.link);

device->output_destroy_listener.notify = NULL;

}

if (!output) {

weston_log("output for input device %s removed\n",

libinput_device_get_sysname(device->device));

device->output = NULL;

return;

}

weston_log("associating input device %s with output %s "

"(%s by udev)\n",

libinput_device_get_sysname(device->device),

output->name,

device->output_name ?: "none");

device->output = output;

device->output_destroy_listener.notify = notify_output_destroy;

wl_signal_add(&output->destroy_signal,

&device->output_destroy_listener);

evdev_device_set_calibration(device);

}

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Posted by 구차니

wayland atomic commit 패치?

오랫만에 생각난김에 검색했는데 8월 2일 커밋된 따끈한 녀석 발견!

[링크 : https://gitlab.freedesktop.org/wayland/weston/-/commits/main?search=atomic]

음.. 잘 해결되면 좋겠네..

backend-drm: improve atomic commit failure handling

When an atomic commit fails then the output will be stuck in
REPAINT_AWAITING_COMPLETION state. It is waiting for a vblank event that was
never scheduled.
If the error is EBUSY then it can be expected to be a transient error. So
propagate the error and schedule a new repaint in the core compositor.

This is necessary because there are some circumstances when the commit can fail
unexpectedly:
- With 'state_invalid == true' one commit will disable all planes. If another
  commit for a different output is triggered immediately afterwards, then this
  commit can temporarily fail with EBUSY because it tries to use the same
  planes.
- At least with i915, if one commit enables an output then a second commit for a
  different output immediately afterwards can temporarily fail with EBUSY. This
  is probably caused by some hardware interdependency.
Signed-off-by: Michael Olbrich's avatarMichael Olbrich <m.olbrich@pengutronix.de>

libweston/backend-drm/drm.c의 drm_repaint_flush()와

libweston/compositor.c의 output_repaint_timer_hander() 쪽에 수정이 가해진다.

[링크 : https://gitlab.freedesktop.org/wayland/weston/-/commit/3b3fdc52c31f828ff0fb71d2c6ce7bdcc64f20a1]

[링크 : https://gitlab.freedesktop.org/wayland/weston/-/blob/3b3fdc52c31f828ff0fb71d2c6ce7bdcc64f20a1/libweston/backend-drm/drm.c]

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Posted by 구차니

weston screen shooter 뜯어보기

weston_screenshooter_shoot()을 따라오는데 영 어딜 파야 나올지 감이 안온다.

아무튼.. libweston의 screenshooter.c가 실제적으로 수행되는 부분 같은데

//git\include\libweston\libweston.h
int
weston_screenshooter_shoot(struct weston_output *output, struct weston_buffer *buffer,
   weston_screenshooter_done_func_t done, void *data);

//git\libweston\screenshooter.c
WL_EXPORT int
weston_screenshooter_shoot(struct weston_output *output,
   struct weston_buffer *buffer,
   weston_screenshooter_done_func_t done, void *data)
{
struct screenshooter_frame_listener *l;

if (!wl_shm_buffer_get(buffer->resource)) {
done(data, WESTON_SCREENSHOOTER_BAD_BUFFER);
return -1;
}

buffer->shm_buffer = wl_shm_buffer_get(buffer->resource);
buffer->width = wl_shm_buffer_get_width(buffer->shm_buffer);
buffer->height = wl_shm_buffer_get_height(buffer->shm_buffer);

if (buffer->width < output->current_mode->width ||
    buffer->height < output->current_mode->height) {
done(data, WESTON_SCREENSHOOTER_BAD_BUFFER);
return -1;
}

l = malloc(sizeof *l);
if (l == NULL) {
done(data, WESTON_SCREENSHOOTER_NO_MEMORY);
return -1;
}

l->buffer = buffer;
l->output = output;
l->done = done;
l->data = data;
l->listener.notify = screenshooter_frame_notify;
wl_signal_add(&output->frame_signal, &l->listener);
weston_output_disable_planes_incr(output);
weston_output_damage(output);

return 0;
}

아무튼 추적을 계속해보면 아래와 같이 event_loop에 wl_event_loop_add_idle() 실행해서 추가해주고 끝.

//git\libweston\compositor.c
static void
weston_schedule_surface_protection_update(struct weston_compositor *compositor)
{
struct content_protection *cp = compositor->content_protection;
struct wl_event_loop *loop;

if (!cp || cp->surface_protection_update)
return;
loop = wl_display_get_event_loop(compositor->wl_display);
cp->surface_protection_update = wl_event_loop_add_idle(loop,
notify_surface_protection_change,
compositor);
}

WL_EXPORT void
weston_output_disable_planes_incr(struct weston_output *output)
{
output->disable_planes++;
/*
* If disable_planes changes from 0 to non-zero, it means some type of
* recording of content has started, and therefore protection level of
* the protected surfaces must be updated to avoid the recording of
* the protected content.
*/
if (output->disable_planes == 1)
weston_schedule_surface_protection_update(output->compositor);
}

struct content_protection은 누가 만드나 하면서 따라가보니

weston_compositor_enable_content_protection() 함수에서 만들어 주고 해당 함수는

//git\libweston\content-protection.c
WL_EXPORT int
weston_compositor_enable_content_protection(struct weston_compositor *compositor)
{
struct content_protection *cp;

cp = zalloc(sizeof(*cp));
if (cp == NULL)
return -1;
cp->compositor = compositor;

compositor->content_protection = cp;
wl_list_init(&cp->protected_list);
if (wl_global_create(compositor->wl_display,
     &weston_content_protection_interface, 1, cp,
     bind_weston_content_protection) == NULL)
return -1;

cp->destroy_listener.notify = cp_destroy_listener;
wl_signal_add(&compositor->destroy_signal, &cp->destroy_listener);
cp->debug = weston_compositor_add_log_scope(compositor, "content-protection-debug",
    "debug-logs for content-protection",
    NULL, NULL, NULL);
return 0;
}

drm_backend_create() 시에 b->atomic_modeset 조건에 의해서 생성된다.

//git\libweston\backend-drm\drm.c
static struct drm_backend *
drm_backend_create(struct weston_compositor *compositor,
struct weston_drm_backend_config *config)
{
if (b->atomic_modeset)
if (weston_compositor_enable_content_protection(compositor) < 0)
weston_log("Error: initializing content-protection "
"support failed.\n");
}

이름이 비슷한건지 걸려나오는 다른 녀석.

//protocol\weston-screenshooter-client-protocol.h
#define WESTON_SCREENSHOOTER_SHOOT 0

static inline void
weston_screenshooter_shoot(struct weston_screenshooter *weston_screenshooter, struct wl_output *output, struct wl_buffer *buffer)
{
wl_proxy_marshal((struct wl_proxy *) weston_screenshooter,
WESTON_SCREENSHOOTER_SHOOT, output, buffer);
}

wl_proxy_marshall()은 또 멀까해서 따라가 보지만.. 답이 안나온다 -_ㅠ

//wayland-main\src\wayland-client.c
WL_EXPORT struct wl_proxy *
wl_proxy_marshal_array_constructor_versioned(struct wl_proxy *proxy,
     uint32_t opcode,
     union wl_argument *args,
     const struct wl_interface *interface,
     uint32_t version)
{
return wl_proxy_marshal_array_flags(proxy, opcode, interface, version, 0, args);
}

WL_EXPORT struct wl_proxy *
wl_proxy_marshal_array_constructor(struct wl_proxy *proxy,
   uint32_t opcode, union wl_argument *args,
   const struct wl_interface *interface)
{
return wl_proxy_marshal_array_constructor_versioned(proxy, opcode,
    args, interface,
    proxy->version);
}

WL_EXPORT void
wl_proxy_marshal(struct wl_proxy *proxy, uint32_t opcode, ...)
{
union wl_argument args[WL_CLOSURE_MAX_ARGS];
va_list ap;

va_start(ap, opcode);
wl_argument_from_va_list(proxy->object.interface->methods[opcode].signature,
args, WL_CLOSURE_MAX_ARGS, ap);
va_end(ap);

wl_proxy_marshal_array_constructor(proxy, opcode, args, NULL);
}

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Posted by 구차니

wayland glreadpixels 실패

C Specification
void glReadPixels( GLint x,
GLint y,
GLsizei width,
GLsizei height,
GLenum format,
GLenum type,
GLvoid * data);
Parameters
x, y
Specify the window coordinates of the first pixel that is read from the frame buffer. This location is the lower left corner of a rectangular block of pixels.

width, height
Specify the dimensions of the pixel rectangle. width and height of one correspond to a single pixel.

[링크 : https://docs.gl/es3/glReadPixels]

static void
screenshooter_shoot(struct wl_client *client,
    struct wl_resource *resource,
    struct wl_resource *output_resource,
    struct wl_resource *buffer_resource)
{
struct wlsc_output *output = output_resource->data;
struct wl_buffer *buffer = buffer_resource->data;
if (!wl_buffer_is_shm(buffer))
return;
if (buffer->width < output->current->width ||
    buffer->height < output->current->height)
return;
glPixelStorei(GL_PACK_ALIGNMENT, 1);
glReadPixels(0, 0, output->current->width, output->current->height,
     GL_RGBA, GL_UNSIGNED_BYTE,
     wl_shm_buffer_get_data(buffer));
}

[링크 : https://chromium.googlesource.com/chromiumos/third_party/wayland-demos/+/refs/heads/stabilize/compositor/screenshooter.c]

You can't take screenshots with glReadPixels!

[링크 : https://stackoverflow.com/questions/37149068/glreadpixels-function-returning-error-1282-gl-invalid-operation]

[링크 : https://stackoverflow.com/questions/44634621/glreadpixels-with-screen-pixels]

대충 짰는데 안되는 듯..

$ cat gl_cap.c
#include <stdio.h>
#include <GLES2/gl2.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>

void main()
{
                GLubyte color[1024*768*4];
                glReadPixels(0,0, 1024, 768, GL_RGBA, GL_UNSIGNED_BYTE, &color);
//              printf("R:%d G:%d B:%d A:%d", color[0], color[1], color[2], color[3]);
for(int y =0 ; y<768;y++)
for(int x =0 ; x < 1024; x++)
                printf("%4d,%3d R:%d G:%d B:%d A:%d\n", x,y
                        ,color[y*1024+x+0]
                        ,color[y*1024+x+1]
                        ,color[y*1024+x+2]
                        ,color[y*1024+x+3]
                );
}

링크는 아래와 같이 해주면 되긴 한데...

-lwayland-egl -lGLESv2

흐으으으음...

# head dump
   0,  0 R:0 G:0 B:0 A:0
   1,  0 R:0 G:0 B:0 A:0
   2,  0 R:0 G:0 B:0 A:0
   3,  0 R:0 G:0 B:0 A:0
   4,  0 R:0 G:0 B:0 A:0
   5,  0 R:0 G:0 B:0 A:0
   6,  0 R:0 G:0 B:0 A:0
   7,  0 R:0 G:0 B:0 A:0
   8,  0 R:0 G:0 B:0 A:0
   9,  0 R:0 G:0 B:0 A:0
# tail dump
1014,767 R:0 G:0 B:0 A:0
1015,767 R:0 G:0 B:0 A:0
1016,767 R:0 G:0 B:0 A:0
1017,767 R:0 G:0 B:0 A:0
1018,767 R:0 G:0 B:0 A:0
1019,767 R:0 G:0 B:0 A:0
1020,767 R:0 G:0 B:0 A:0
1021,767 R:0 G:0 B:0 A:0
1022,767 R:0 G:0 B:0 A:0
1023,767 R:0 G:0 B:0 A:0

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sway + wayvnc

sway와 wayfire 라는 녀석이 wlroot 기반의 compositor 인 듯.

일단~~은 sway 패키지를 설치하고

$ sudo apt install sway

[링크 : https://installati.one/ubuntu/21.04/sway/]

wayvnc 설치(ubuntu 22.04 LTS/x86)

$ sudo apt install wayvnc

로그아웃 후에 세션을 sway로 변경

[링크 : https://llandy3d.github.io/sway-on-ubuntu/]

[링크 : https://www.slant.co/topics/11023/versus/~sway_vs_wayfire_vs_weston]

"윈 + D" 누르고 terminal 친 후 방향키로 gnome-terminal 선택 + enter

혹은 "윈 + enter"

요건 심심해서 htop 실행. i7-3635QM 이긴 한데

sway와 wayvnc가 동일하게 1.3% 씩 먹는 상황. 이걸 낮다고 봐야하나 높다고 봐야하나..

[링크 : https://swaywm.org/]

[링크 : https://wiki.archlinux.org/title/Sway]

터미널에서 wayvnc 접속가능하도록 실행

$ wayvnc 0.0.0.0

+

sway 단축키

super - shift - space (타일/창 전환)
super - e (가로 / 세로 타일 배치 전환)
super - h (창 전환)
super - enter (터미널 열기)
super - d (프로그램 실행?)

+

로그아웃

방법을 못 찾아서, sway 프로세스 kill 하고 다시 로그인 함 -_-

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wayvnc 0.5 릴리즈

22.07.10 에 릴리즈 되었는데 H.264 인코딩이 특징인 듯.

wayland도 힘을 못써서 조용히 사라질줄 알았는데, 조용히 부활하고 있었던 건가.. -_-

[링크 : https://www.phoronix.com/forums/forum/linux-graphics-x-org-drivers/wayland-display-server/1333848-wayvnc-0-5-vnc-server-for-wlroots-based-wayland-compositors-released]

[링크 : https://github.com/any1/wayvnc/releases/tag/v0.5.0]

[링크 : https://github.com/any1/wayvnc]

그나저나 s390x는 먼가 해서 찾아봤더니 (s로 시작해서 스냅드래곤인가 싶었지만)

[링크 : https://packages.ubuntu.com/jammy/wayvnc]

1998년 단종된 IBM System/390 시리즈 인 것 같은데.. 이걸 아직도(?) 지원해주다니..

[링크 : https://en.wikipedia.org/wiki/IBM_System/390]

[링크 : https://en.wikipedia.org/wiki/Linux_on_IBM_Z#Hardware]

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capture drm screen

openGL 컨텍스트를 이용해서 빼내거나

mmap 으로 빼내라고 하는데 어떤 주소값을 복사해야 하는지 이야기가 없네.

[링크 : https://stackoverflow.com/questions/47428631/get-screenshot-of-egl-drm-kms-application]

+

22.08.09

void glReadPixels( GLint x,
GLint y,
GLsizei width,
GLsizei height,
GLenum format,
GLenum type,
void * data);

void glReadnPixels( GLint x,
GLint y,
GLsizei width,
GLsizei height,
GLenum format,
GLenum type,
GLsizei bufSize,
void * data);

[링크 : https://registry.khronos.org/OpenGL-Refpages/es3/html/glReadPixels.xhtml]

[링크 : https://community.nxp.com/t5/i-MX-Processors/Rendering-with-OpenGL-ES-2-x-3-x-to-a-DMA-buffer-physical-memory/m-p/1229007]
[링크 : https://community.nxp.com/t5/i-MX-Processors/Zero-copy-between-GPU-and-VPU/m-p/1044158]

[링크 : https://stackoverflow.com/questions/3191978/how-to-use-glut-opengl-to-render-to-a-file]

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weston redraw 취소하기

코드 분석하다 보니 아래와 같은 함수를 compositor.c에서 발견함.

weston 에서 호출되는 곳은 3 곳.

/** State of the repaint loop */
enum {
REPAINT_NOT_SCHEDULED = 0, /**< idle; no repaint will occur */
REPAINT_BEGIN_FROM_IDLE, /**< start_repaint_loop scheduled */
REPAINT_SCHEDULED, /**< repaint is scheduled to occur */
REPAINT_AWAITING_COMPLETION, /**< last repaint not yet finished */
} repaint_status;

static void
weston_output_schedule_repaint_reset(struct weston_output *output)
{
output->repaint_status = REPAINT_NOT_SCHEDULED;
TL_POINT(output->compositor, "core_repaint_exit_loop",
TLP_OUTPUT(output), TLP_END);
}

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