HYL_OK3568_LINUX/buildroot/package/weston/0017-backend-drm-Support-mirror-mode.patch
2025-05-10 21:49:39 +08:00

731 lines
20 KiB
Diff

From 4d890ce02a5fe7657140a2767cdd27b5a646cfa9 Mon Sep 17 00:00:00 2001
From: Jeffy Chen <jeffy.chen@rock-chips.com>
Date: Thu, 19 Nov 2020 09:41:47 +0800
Subject: [PATCH 17/93] backend-drm: Support mirror mode
Set env "WESTON_DRM_MIRROR" to enable mirror mode, and set env
"WESTON_DRM_KEEP_RATIO" to keep the aspect ratio.
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
---
clients/desktop-shell.c | 9 +-
desktop-shell/shell.c | 3 +
include/libweston/libweston.h | 4 +
libweston/backend-drm/drm-gbm.c | 4 +-
libweston/backend-drm/drm-internal.h | 10 +
libweston/backend-drm/drm.c | 332 +++++++++++++++++++++++++-
libweston/backend-drm/meson.build | 3 +-
libweston/backend-drm/state-propose.c | 23 +-
libweston/compositor.c | 24 +-
libweston/input.c | 7 +
meson.build | 5 +
11 files changed, 403 insertions(+), 21 deletions(-)
diff --git a/clients/desktop-shell.c b/clients/desktop-shell.c
index 6eb9775..2d2fd83 100644
--- a/clients/desktop-shell.c
+++ b/clients/desktop-shell.c
@@ -1023,9 +1023,14 @@ desktop_shell_configure(void *data,
struct wl_surface *surface,
int32_t width, int32_t height)
{
- struct window *window = wl_surface_get_user_data(surface);
- struct surface *s = window_get_user_data(window);
+ struct window *window;
+ struct surface *s;
+
+ if (!surface)
+ return;
+ window = wl_surface_get_user_data(surface);
+ s = window_get_user_data(window);
s->configure(data, desktop_shell, edges, window, width, height);
}
diff --git a/desktop-shell/shell.c b/desktop-shell/shell.c
index 89ea491..7aa787c 100644
--- a/desktop-shell/shell.c
+++ b/desktop-shell/shell.c
@@ -3857,6 +3857,9 @@ weston_view_set_initial_position(struct weston_view *view,
}
wl_list_for_each(output, &compositor->output_list, link) {
+ if (output->unavailable)
+ continue;
+
if (pixman_region32_contains_point(&output->region, ix, iy, NULL)) {
target_output = output;
break;
diff --git a/include/libweston/libweston.h b/include/libweston/libweston.h
index d35963f..a8ec105 100644
--- a/include/libweston/libweston.h
+++ b/include/libweston/libweston.h
@@ -573,7 +573,11 @@ struct weston_output {
*/
void (*detach_head)(struct weston_output *output,
struct weston_head *head);
+
+ bool unavailable;
};
+#define weston_output_valid(o) \
+ ((o) && !(o)->destroying && !(o)->unavailable)
enum weston_pointer_motion_mask {
WESTON_POINTER_MOTION_ABS = 1 << 0,
diff --git a/libweston/backend-drm/drm-gbm.c b/libweston/backend-drm/drm-gbm.c
index 76fa79f..d10cc40 100644
--- a/libweston/backend-drm/drm-gbm.c
+++ b/libweston/backend-drm/drm-gbm.c
@@ -275,8 +275,8 @@ drm_output_fini_egl(struct drm_output *output)
/* Destroying the GBM surface will destroy all our GBM buffers,
* regardless of refcount. Ensure we destroy them here. */
if (!b->shutting_down &&
- output->scanout_plane->state_cur->fb &&
- output->scanout_plane->state_cur->fb->type == BUFFER_GBM_SURFACE) {
+ output->scanout_plane->state_cur->fb && (output->is_mirror ||
+ output->scanout_plane->state_cur->fb->type == BUFFER_GBM_SURFACE)) {
drm_plane_reset_state(output->scanout_plane);
}
diff --git a/libweston/backend-drm/drm-internal.h b/libweston/backend-drm/drm-internal.h
index af82922..037c937 100644
--- a/libweston/backend-drm/drm-internal.h
+++ b/libweston/backend-drm/drm-internal.h
@@ -362,6 +362,8 @@ struct drm_backend {
int virtual_width;
int virtual_height;
+
+ bool mirror_mode;
};
struct drm_mode {
@@ -617,6 +619,10 @@ struct drm_output {
int current_image;
pixman_region32_t previous_damage;
+ /* Wrap fb for scale/rotate usage */
+ struct drm_fb *wrap[2];
+ int next_wrap;
+
struct vaapi_recorder *recorder;
struct wl_listener recorder_frame_listener;
@@ -631,6 +637,10 @@ struct drm_output {
/* The dummy framebuffer for SET_CRTC. */
struct drm_fb *fb_dummy;
+
+ bool is_mirror;
+
+ pixman_box32_t plane_bounds;
};
void
diff --git a/libweston/backend-drm/drm.c b/libweston/backend-drm/drm.c
index a2f215f..ec7e9be 100644
--- a/libweston/backend-drm/drm.c
+++ b/libweston/backend-drm/drm.c
@@ -68,6 +68,11 @@
#include "linux-dmabuf-unstable-v1-server-protocol.h"
#include "linux-explicit-synchronization.h"
+#ifdef HAVE_RGA
+#include <rga/rga.h>
+#include <rga/RgaApi.h>
+#endif
+
static const char default_seat[] = "seat0";
static inline bool
@@ -86,6 +91,120 @@ drm_head_is_external(struct drm_head *head)
}
};
+static int
+drm_output_get_rotation(struct drm_output *output)
+{
+ switch (output->base.transform) {
+ case WL_OUTPUT_TRANSFORM_90:
+ case WL_OUTPUT_TRANSFORM_FLIPPED_90:
+ return 90;
+ case WL_OUTPUT_TRANSFORM_180:
+ case WL_OUTPUT_TRANSFORM_FLIPPED_180:
+ return 180;
+ case WL_OUTPUT_TRANSFORM_270:
+ case WL_OUTPUT_TRANSFORM_FLIPPED_270:
+ return 270;
+ default:
+ return 0;
+ }
+}
+
+#ifdef HAVE_RGA
+static inline RgaSURF_FORMAT
+rga_get_format(const struct pixel_format_info *format)
+{
+ switch (format->format) {
+ case DRM_FORMAT_XRGB8888:
+ return RK_FORMAT_BGRX_8888;
+ case DRM_FORMAT_ARGB8888:
+ return RK_FORMAT_BGRA_8888;
+ case DRM_FORMAT_RGB565:
+ return RK_FORMAT_RGB_565;
+ default:
+ return RK_FORMAT_UNKNOWN;
+ }
+}
+#endif
+
+static int
+drm_copy_fb(struct drm_fb *src, struct drm_fb *dst, int rotation,
+ int src_width, int src_height)
+{
+#ifndef HAVE_RGA
+ /* TODO: Use pixman to do the copy */
+ weston_log("rga not supported\n");
+ return -1;
+#else
+ RgaSURF_FORMAT src_format, dst_format;
+ rga_info_t src_info = {0};
+ rga_info_t dst_info = {0};
+ int src_fd, dst_fd;
+ int ret;
+
+ static bool rga_supported = true;
+ static bool rga_inited = false;
+
+ if (!rga_supported)
+ return -1;
+
+ if (!rga_inited) {
+ ret = c_RkRgaInit();
+ if (ret < 0) {
+ weston_log("rga not supported\n");
+ rga_supported = false;
+ return ret;
+ }
+ rga_inited = true;
+ }
+
+ src_format = rga_get_format(src->format);
+ dst_format = rga_get_format(dst->format);
+
+ if (src_format == RK_FORMAT_UNKNOWN ||
+ dst_format == RK_FORMAT_UNKNOWN) {
+ weston_log("unsupported fb format\n");
+ return -1;
+ }
+
+ ret = drmPrimeHandleToFD(src->fd, src->handles[0],
+ DRM_CLOEXEC, &src_fd);
+ if (ret < 0)
+ return ret;
+
+ ret = drmPrimeHandleToFD(dst->fd, dst->handles[0],
+ DRM_CLOEXEC, &dst_fd);
+ if (ret < 0)
+ goto close_src;
+
+ src_info.fd = src_fd;
+ src_info.mmuFlag = 1;
+
+ rga_set_rect(&src_info.rect, 0, 0, src_width, src_height,
+ src->strides[0] * 8 / src->format->bpp, src->height,
+ src_format);
+
+ if (rotation == 90)
+ src_info.rotation = HAL_TRANSFORM_ROT_90;
+ else if (rotation == 180)
+ src_info.rotation = HAL_TRANSFORM_ROT_180;
+ else if (rotation == 270)
+ src_info.rotation = HAL_TRANSFORM_ROT_270;
+
+ dst_info.fd = dst_fd;
+ dst_info.mmuFlag = 1;
+
+ rga_set_rect(&dst_info.rect, 0, 0, dst->width, dst->height,
+ dst->strides[0] * 8 / dst->format->bpp, dst->height,
+ dst_format);
+
+ ret = c_RkRgaBlit(&src_info, &dst_info, NULL);
+ close(dst_fd);
+close_src:
+ close(src_fd);
+ return ret;
+#endif
+}
+
static void
drm_backend_update_outputs(struct drm_backend *b)
{
@@ -95,6 +214,28 @@ drm_backend_update_outputs(struct drm_backend *b)
return;
primary = b->primary_head->base.output;
+
+ if (b->mirror_mode) {
+ struct weston_output *base;
+
+ wl_list_for_each(base, &b->compositor->output_list, link) {
+ struct drm_output *output = to_drm_output(base);
+ bool is_mirror = base != primary;
+
+ if (output->is_mirror == is_mirror)
+ continue;
+
+ /* Make mirrors unavailable for normal views */
+ output->base.unavailable = is_mirror;
+
+ output->is_mirror = is_mirror;
+ output->state_invalid = true;
+
+ weston_log("Output %s changed to %s output\n",
+ base->name, is_mirror ? "mirror" : "main");
+ }
+ }
+
if (!primary)
return;
@@ -405,6 +546,69 @@ drm_output_render_pixman(struct drm_output_state *state,
return drm_fb_ref(output->dumb[output->current_image]);
}
+static struct drm_fb *
+drm_output_get_fb(struct drm_pending_state *pending_state,
+ struct weston_output *output_base)
+{
+ struct drm_output *output = to_drm_output(output_base);
+ struct drm_plane_state *scanout_state;
+ struct drm_output_state *state;
+ struct drm_fb *fb = output->scanout_plane->state_cur->fb;
+
+ state = drm_pending_state_get_output(pending_state, output);
+ if (!state)
+ return fb;
+
+ scanout_state =
+ drm_output_state_get_existing_plane(state,
+ output->scanout_plane);
+ if (!scanout_state || !scanout_state->fb)
+ return fb;
+
+ return scanout_state->fb;
+}
+
+static void
+drm_output_try_destroy_wrap_fb(struct drm_output *output)
+{
+ if (output->wrap[0]) {
+ drm_fb_unref(output->wrap[0]);
+ output->wrap[0] = NULL;
+ }
+
+ if (output->wrap[1]) {
+ drm_fb_unref(output->wrap[1]);
+ output->wrap[1] = NULL;
+ }
+
+ output->next_wrap = 0;
+}
+
+static struct drm_fb *
+drm_output_get_wrap_fb(struct drm_backend *b, struct drm_output *output,
+ int width, int height)
+{
+ struct drm_fb *fb = output->wrap[output->next_wrap];
+
+ if (fb) {
+ if (fb->width == width && fb->height == height)
+ goto out;
+
+ drm_fb_unref(fb);
+ }
+
+ fb = drm_fb_create_dumb(b->drm, width, height, output->gbm_format);
+ if (!fb) {
+ weston_log("failed to create wrap fb\n");
+ return NULL;
+ }
+
+ output->wrap[output->next_wrap] = fb;
+out:
+ output->next_wrap ^= 1;
+ return drm_fb_ref(fb);
+}
+
void
drm_output_render(struct drm_output_state *state, pixman_region32_t *damage)
{
@@ -417,10 +621,13 @@ drm_output_render(struct drm_output_state *state, pixman_region32_t *damage)
&scanout_plane->props[WDRM_PLANE_FB_DAMAGE_CLIPS];
struct drm_backend *b = device->backend;
struct drm_mode *mode;
- struct drm_fb *fb;
+ struct drm_fb *fb = NULL;
pixman_region32_t scanout_damage;
pixman_box32_t *rects;
int n_rects;
+ int sw, sh, dx, dy, dw, dh;
+ int rotation = 0;
+ bool scaling;
/* If we already have a client buffer promoted to scanout, then we don't
* want to render. */
@@ -428,6 +635,35 @@ drm_output_render(struct drm_output_state *state, pixman_region32_t *damage)
if (scanout_state->fb)
return;
+ if (!output->is_mirror) {
+ struct drm_output *tmp;
+
+ /* Repaint all mirrors when updating main output */
+ wl_list_for_each(tmp, &b->compositor->output_list, base.link)
+ if (tmp->is_mirror)
+ weston_output_schedule_repaint(&tmp->base);
+ } else {
+ if (!b->primary_head)
+ goto out;
+
+ rotation = drm_output_get_rotation(output);
+
+ fb = drm_output_get_fb(state->pending_state,
+ b->primary_head->base.output);
+ if (fb) {
+ drm_fb_ref(fb);
+
+ pixman_region32_init(&scanout_damage);
+ wl_signal_emit(&output->base.frame_signal,
+ &scanout_damage);
+ pixman_region32_fini(&scanout_damage);
+ } else {
+ weston_compositor_damage_all(b->compositor);
+ }
+
+ goto out;
+ }
+
/*
* If we don't have any damage on the primary plane, and we already
* have a renderer buffer active, we can reuse it; else we pass
@@ -447,24 +683,86 @@ drm_output_render(struct drm_output_state *state, pixman_region32_t *damage)
fb = drm_output_render_gl(state, damage);
}
+out:
if (!fb) {
drm_plane_state_put_back(scanout_state);
return;
}
+ sw = fb->width;
+ sh = fb->height;
+
+ dx = output->plane_bounds.x1;
+ dy = output->plane_bounds.y1;
+ dw = output->plane_bounds.x2 - output->plane_bounds.x1;
+ dh = output->plane_bounds.y2 - output->plane_bounds.y1;
+
+ if (!dw || !dh) {
+ mode = to_drm_mode(output->base.current_mode);
+ dw = mode->mode_info.hdisplay;
+ dh = mode->mode_info.vdisplay;
+ }
+
+ if (output->is_mirror && getenv("WESTON_DRM_KEEP_RATIO")) {
+ float src_ratio = (float) sw / sh;
+ float dst_ratio = (float) dw / dh;
+ int offset;
+
+ if (rotation % 180)
+ src_ratio = 1 / src_ratio;
+
+ if (src_ratio > dst_ratio) {
+ offset = dh - dw / src_ratio;
+ dy = offset / 2;
+ dh -= offset;
+ } else {
+ offset = dw - dh * src_ratio;
+ dx = offset / 2;
+ dw -= offset;
+ }
+ }
+
+ scaling = sw != dw || sh != dh;
+
+ if (rotation || (scaling && !output->scanout_plane->can_scale)) {
+ struct drm_fb *wrap_fb =
+ drm_output_get_wrap_fb(b, output, dw, dh);
+ if (!wrap_fb) {
+ weston_log("failed to get wrap fb\n");
+ goto err;
+ }
+
+ if (drm_copy_fb(fb, wrap_fb, rotation, sw, sh) < 0) {
+ weston_log("failed to copy fb\n");
+ goto err;
+ }
+
+ sw = dw;
+ sh = dh;
+
+ drm_fb_unref(fb);
+ fb = wrap_fb;
+ } else {
+ drm_output_try_destroy_wrap_fb(output);
+ }
+
scanout_state->fb = fb;
+ fb = NULL;
+
scanout_state->output = output;
scanout_state->src_x = 0;
scanout_state->src_y = 0;
- scanout_state->src_w = fb->width << 16;
- scanout_state->src_h = fb->height << 16;
+ scanout_state->src_w = sw << 16;
+ scanout_state->src_h = sh << 16;
- mode = to_drm_mode(output->base.current_mode);
- scanout_state->dest_x = 0;
- scanout_state->dest_y = 0;
- scanout_state->dest_w = mode->mode_info.hdisplay;
- scanout_state->dest_h = mode->mode_info.vdisplay;
+ scanout_state->dest_x = dx;
+ scanout_state->dest_y = dy;
+ scanout_state->dest_w = dw;
+ scanout_state->dest_h = dh;
+
+ if (output->is_mirror)
+ return;
pixman_region32_subtract(&c->primary_plane.damage,
&c->primary_plane.damage, damage);
@@ -500,6 +798,12 @@ drm_output_render(struct drm_output_state *state, pixman_region32_t *damage)
&scanout_state->damage_blob_id);
pixman_region32_fini(&scanout_damage);
+ return;
+err:
+ if (fb)
+ drm_fb_unref(fb);
+
+ drm_plane_state_put_back(scanout_state);
}
static int
@@ -1347,8 +1651,8 @@ drm_output_fini_pixman(struct drm_output *output)
/* Destroying the Pixman surface will destroy all our buffers,
* regardless of refcount. Ensure we destroy them here. */
if (!b->shutting_down &&
- output->scanout_plane->state_cur->fb &&
- output->scanout_plane->state_cur->fb->type == BUFFER_PIXMAN_DUMB) {
+ output->scanout_plane->state_cur->fb && (output->is_mirror ||
+ output->scanout_plane->state_cur->fb->type == BUFFER_PIXMAN_DUMB)) {
drm_plane_reset_state(output->scanout_plane);
}
@@ -2067,6 +2371,8 @@ drm_output_destroy(struct weston_output *base)
assert(output->hdr_output_metadata_blob_id == 0);
+ drm_output_try_destroy_wrap_fb(output);
+
free(output);
}
@@ -3442,6 +3748,12 @@ drm_backend_create(struct weston_compositor *compositor,
else
b->resize_freeze_ms = DRM_RESIZE_FREEZE_MS;
+ buf = getenv("WESTON_DRM_MIRROR");
+ if (buf && buf[0] == '1') {
+ b->mirror_mode = true;
+ weston_log("Entering mirror mode.\n");
+ }
+
device = zalloc(sizeof *device);
if (device == NULL)
return NULL;
diff --git a/libweston/backend-drm/meson.build b/libweston/backend-drm/meson.build
index bf7ce33..92ca921 100644
--- a/libweston/backend-drm/meson.build
+++ b/libweston/backend-drm/meson.build
@@ -40,7 +40,8 @@ deps_drm = [
dep_libdrm,
dep_libinput_backend,
dependency('libudev', version: '>= 136'),
- dep_backlight
+ dep_backlight,
+ dep_rga
]
if get_option('renderer-gl')
diff --git a/libweston/backend-drm/state-propose.c b/libweston/backend-drm/state-propose.c
index 967b6bd..69d49bc 100644
--- a/libweston/backend-drm/state-propose.c
+++ b/libweston/backend-drm/state-propose.c
@@ -55,6 +55,21 @@ static const char *const drm_output_propose_state_mode_as_string[] = {
[DRM_OUTPUT_PROPOSE_STATE_PLANES_ONLY] = "plane-only state"
};
+static bool
+drm_is_mirroring(struct drm_backend *b)
+{
+ struct drm_output *tmp;
+
+ if (!b->mirror_mode)
+ return false;
+
+ wl_list_for_each(tmp, &b->compositor->output_list, base.link)
+ if (tmp->is_mirror)
+ return true;
+
+ return false;
+}
+
static const char *
drm_propose_state_mode_to_string(enum drm_output_propose_state_mode mode)
{
@@ -459,7 +474,8 @@ drm_output_find_plane_for_view(struct drm_output_state *state,
FAILURE_REASONS_FB_FORMAT_INCOMPATIBLE;
return NULL;
} else if (buffer->type == WESTON_BUFFER_SHM) {
- if (!output->cursor_plane || device->cursors_are_broken) {
+ if (!output->cursor_plane || device->cursors_are_broken ||
+ drm_is_mirroring(b)) {
pnode->try_view_on_plane_failure_reasons |=
FAILURE_REASONS_FB_FORMAT_INCOMPATIBLE;
return NULL;
@@ -932,7 +948,10 @@ drm_assign_planes(struct weston_output *output_base)
drm_debug(b, "\t[repaint] preparing state for output %s (%lu)\n",
output_base->name, (unsigned long) output_base->id);
- if (!device->sprites_are_broken && !output->virtual && b->gbm) {
+ /* Force single plane in mirror mode */
+ if (drm_is_mirroring(b)) {
+ drm_debug(b, "\t[state] no overlay plane in mirror mode\n");
+ } else if (!device->sprites_are_broken && !output->virtual && b->gbm) {
drm_debug(b, "\t[repaint] trying planes-only build state\n");
state = drm_output_propose_state(output_base, pending_state, mode);
if (!state) {
diff --git a/libweston/compositor.c b/libweston/compositor.c
index 2125f1a..eea8da2 100644
--- a/libweston/compositor.c
+++ b/libweston/compositor.c
@@ -1426,7 +1426,7 @@ weston_view_assign_output(struct weston_view *ev)
mask = 0;
pixman_region32_init(&region);
wl_list_for_each(output, &ec->output_list, link) {
- if (output->destroying)
+ if (!weston_output_valid(output))
continue;
pixman_region32_intersect(&region, &ev->transform.boundingbox,
@@ -5660,6 +5660,9 @@ bind_output(struct wl_client *client,
static void
weston_head_add_global(struct weston_head *head)
{
+ if (head->global || !weston_output_valid(head->output))
+ return;
+
head->global = wl_global_create(head->compositor->wl_display,
&wl_output_interface, 3,
head, bind_output);
@@ -5695,6 +5698,15 @@ weston_head_remove_global(struct weston_head *head)
wl_list_init(&head->xdg_output_resource_list);
}
+static void
+weston_head_update_global(struct weston_head *head)
+{
+ if (weston_output_valid(head->output))
+ weston_head_add_global(head);
+ else
+ weston_head_remove_global(head);
+}
+
/** Get the backing object of wl_output
*
* \param resource A wl_output protocol object.
@@ -6521,6 +6533,7 @@ WL_EXPORT void
weston_compositor_reflow_outputs(struct weston_compositor *compositor)
{
struct weston_output *output;
+ struct weston_head *head;
int x, y, next_x, next_y;
if (compositor->output_flow_dirty)
@@ -6528,7 +6541,10 @@ weston_compositor_reflow_outputs(struct weston_compositor *compositor)
next_x = next_y = 0;
wl_list_for_each(output, &compositor->output_list, link) {
- if (output->destroying)
+ wl_list_for_each(head, &output->head_list, output_link)
+ weston_head_update_global(head);
+
+ if (!weston_output_valid(output))
continue;
x = next_x;
@@ -6743,11 +6759,11 @@ weston_compositor_add_output(struct weston_compositor *compositor,
wl_list_insert(compositor->output_list.prev, &output->link);
output->enabled = true;
+ wl_signal_emit(&compositor->output_created_signal, output);
+
wl_list_for_each(head, &output->head_list, output_link)
weston_head_add_global(head);
- wl_signal_emit(&compositor->output_created_signal, output);
-
/*
* Use view_list, as paint nodes have not been created for this
* output yet. Any existing view might touch this new output.
diff --git a/libweston/input.c b/libweston/input.c
index 235cf02..8c9cabc 100644
--- a/libweston/input.c
+++ b/libweston/input.c
@@ -1733,6 +1733,10 @@ weston_pointer_clamp(struct weston_pointer *pointer, wl_fixed_t *fx, wl_fixed_t
wl_list_for_each(output, &ec->output_list, link) {
if (pointer->seat->output && pointer->seat->output != output)
continue;
+
+ if (output->unavailable)
+ continue;
+
if (pixman_region32_contains_point(&output->region,
x, y, NULL))
valid = 1;
@@ -1802,6 +1806,9 @@ weston_pointer_handle_output_destroy(struct wl_listener *listener, void *data)
y = wl_fixed_to_int(pointer->y);
wl_list_for_each(output, &ec->output_list, link) {
+ if (output->unavailable)
+ continue;
+
if (pixman_region32_contains_point(&output->region,
x, y, NULL))
return;
diff --git a/meson.build b/meson.build
index 82119ac..46e57e2 100644
--- a/meson.build
+++ b/meson.build
@@ -141,6 +141,11 @@ if dep_xkbcommon.version().version_compare('>= 0.5.0')
config_h.set('HAVE_XKBCOMMON_COMPOSE', '1')
endif
+dep_rga = dependency('librga', required: false)
+if dep_rga.found()
+ config_h.set('HAVE_RGA', '1')
+endif
+
dep_wayland_server = dependency('wayland-server', version: '>= 1.20.0')
dep_wayland_client = dependency('wayland-client', version: '>= 1.20.0')
dep_pixman = dependency('pixman-1', version: '>= 0.25.2')
--
2.20.1