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backend/wayland: add scaling support for output layers

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Use the viewporter protocol to scale output layers.
This commit is contained in:
Simon Ser 2023-04-20 10:31:22 +02:00 • committed by Alexander Orzechowski
parent 46a014bf47
commit 4c5eadecce
4 changed files with 27 additions and 2 deletions
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7
backend/wayland/backend.c
View file

@ -29,6 +29,7 @@
#include "xdg-shell-client-protocol.h"
#include "tablet-unstable-v2-client-protocol.h"
#include "relative-pointer-unstable-v1-client-protocol.h"
#include "viewporter-client-protocol.h"
struct wlr_wl_linux_dmabuf_feedback_v1 {
struct wlr_wl_backend *backend;
@ -396,6 +397,9 @@ static void registry_global(void *data, struct wl_registry *registry,
} else if (strcmp(iface, wl_subcompositor_interface.name) == 0) {
wl->subcompositor = wl_registry_bind(registry, name,
&wl_subcompositor_interface, 1);
} else if (strcmp(iface, wp_viewporter_interface.name) == 0) {
wl->viewporter = wl_registry_bind(registry, name,
&wp_viewporter_interface, 1);
}
}
@ -515,6 +519,9 @@ static void backend_destroy(struct wlr_backend *backend) {
if (wl->subcompositor) {
wl_subcompositor_destroy(wl->subcompositor);
}
if (wl->viewporter) {
wp_viewporter_destroy(wl->viewporter);
}
free(wl->drm_render_name);
free(wl->activation_token);
xdg_wm_base_destroy(wl->xdg_wm_base);

1
backend/wayland/meson.build
View file

@ -19,6 +19,7 @@ client_protos = [
'presentation-time',
'relative-pointer-unstable-v1',
'tablet-unstable-v2',
'viewporter',
'xdg-activation-v1',
'xdg-decoration-unstable-v1',
'xdg-shell',

19
backend/wayland/output.c
View file

@ -22,6 +22,7 @@
#include "linux-dmabuf-unstable-v1-client-protocol.h"
#include "presentation-time-client-protocol.h"
#include "viewporter-client-protocol.h"
#include "xdg-activation-v1-client-protocol.h"
#include "xdg-decoration-unstable-v1-client-protocol.h"
#include "xdg-shell-client-protocol.h"
@ -287,11 +288,12 @@ static bool output_test(struct wlr_output *wlr_output,
int y = layer_state->dst_box.y;
int width = layer_state->dst_box.width;
int height = layer_state->dst_box.height;
bool needs_viewport = width != layer_state->buffer->width ||
height != layer_state->buffer->height;
if (x < 0 || y < 0 ||
x + width > wlr_output->width ||
y + height > wlr_output->height ||
width != layer_state->buffer->width ||
height != layer_state->dst_box.height) {
(output->backend->viewporter == NULL && needs_viewport)) {
supported = false;
}
if (!wlr_fbox_empty(&layer_state->src_box)) {
@ -315,6 +317,9 @@ static void output_layer_handle_addon_destroy(struct wlr_addon *addon) {
struct wlr_wl_output_layer *layer = wl_container_of(addon, layer, addon);
wlr_addon_finish(&layer->addon);
if (layer->viewport != NULL) {
wp_viewport_destroy(layer->viewport);
}
wl_subsurface_destroy(layer->subsurface);
wl_surface_destroy(layer->surface);
free(layer);
@ -355,6 +360,10 @@ static struct wlr_wl_output_layer *get_or_create_output_layer(
wl_surface_set_input_region(layer->surface, region);
wl_region_destroy(region);
if (output->backend->viewporter != NULL) {
layer->viewport = wp_viewporter_get_viewport(output->backend->viewporter, layer->surface);
}
return layer;
}
@ -405,6 +414,12 @@ static bool output_layer_commit(struct wlr_wl_output *output,
return false;
}
if (layer->viewport != NULL &&
(state->layer->dst_box.width != state->dst_box.width ||
state->layer->dst_box.height != state->dst_box.height)) {
wp_viewport_set_destination(layer->viewport, state->dst_box.width, state->dst_box.height);
}
wl_surface_attach(layer->surface, buffer->wl_buffer, 0, 0);
wl_surface_damage_buffer(layer->surface, 0, 0, INT32_MAX, INT32_MAX);
wl_surface_commit(layer->surface);

2
include/backend/wayland.h
View file

@ -48,6 +48,7 @@ struct wlr_wl_backend {
struct wl_drm *legacy_drm;
struct xdg_activation_v1 *activation_v1;
struct wl_subcompositor *subcompositor;
struct wp_viewporter *viewporter;
char *drm_render_name;
};
@ -71,6 +72,7 @@ struct wlr_wl_output_layer {
struct wl_surface *surface;
struct wl_subsurface *subsurface;
struct wp_viewport *viewport;
bool mapped;
};