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render/swapchain: Add-on to get swapchain from buffer

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This can be used to cache things shared between render buffers (e.g.,
blending buffers) on the swapchain instance itself.
This commit is contained in:
Kenny Levinsen 2024-07-07 13:31:56 +02:00
parent 5432108846
commit 827ea06c44
2 changed files with 50 additions and 0 deletions
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6
include/wlr/render/swapchain.h
View file

@ -4,6 +4,7 @@
#include <stdbool.h> #include <stdbool.h>
#include <wayland-server-core.h> #include <wayland-server-core.h>
#include <wlr/render/drm_format_set.h> #include <wlr/render/drm_format_set.h>
#include <wlr/util/addon.h>
#define WLR_SWAPCHAIN_CAP 4 #define WLR_SWAPCHAIN_CAP 4
@ -23,6 +24,8 @@ struct wlr_swapchain {
struct wlr_swapchain_slot slots[WLR_SWAPCHAIN_CAP]; struct wlr_swapchain_slot slots[WLR_SWAPCHAIN_CAP];
struct wl_listener allocator_destroy; struct wl_listener allocator_destroy;
struct wlr_addon_set addons;
}; };
struct wlr_swapchain *wlr_swapchain_create( struct wlr_swapchain *wlr_swapchain_create(
@ -43,4 +46,7 @@ struct wlr_buffer *wlr_swapchain_acquire(struct wlr_swapchain *swapchain);
bool wlr_swapchain_has_buffer(struct wlr_swapchain *swapchain, bool wlr_swapchain_has_buffer(struct wlr_swapchain *swapchain,
struct wlr_buffer *buffer); struct wlr_buffer *buffer);
struct wlr_swapchain *wlr_swapchain_try_from_wlr_buffer(
struct wlr_buffer *buffer);
#endif #endif

44
render/swapchain.c
View file

@ -6,6 +6,36 @@
#include "render/allocator/allocator.h" #include "render/allocator/allocator.h"
#include "render/drm_format_set.h" #include "render/drm_format_set.h"
struct wlr_swapchain_buffer {
struct wlr_addon buffer_addon;
struct wlr_swapchain *swapchain;
};
static void wlr_swapchain_buffer_destroy(struct wlr_addon *addon) {
struct wlr_swapchain_buffer *swapchain_buffer =
wl_container_of(addon, swapchain_buffer, buffer_addon);
wlr_addon_finish(&swapchain_buffer->buffer_addon);
swapchain_buffer->swapchain = NULL;
free(swapchain_buffer);
}
static const struct wlr_addon_interface buffer_addon_impl = {
.name = "wlr_swapchain_buffer",
.destroy = wlr_swapchain_buffer_destroy,
};
struct wlr_swapchain *wlr_swapchain_try_from_wlr_buffer(struct wlr_buffer *buffer) {
struct wlr_addon *addon =
wlr_addon_find(&buffer->addons, NULL, &buffer_addon_impl);
if (addon == NULL) {
return NULL;
}
struct wlr_swapchain_buffer *swapchain_buffer =
wl_container_of(addon, swapchain_buffer, buffer_addon);
return swapchain_buffer->swapchain;
}
static void swapchain_handle_allocator_destroy(struct wl_listener *listener, static void swapchain_handle_allocator_destroy(struct wl_listener *listener,
void *data) { void *data) {
struct wlr_swapchain *swapchain = struct wlr_swapchain *swapchain =
@ -33,6 +63,7 @@ struct wlr_swapchain *wlr_swapchain_create(
swapchain->allocator_destroy.notify = swapchain_handle_allocator_destroy; swapchain->allocator_destroy.notify = swapchain_handle_allocator_destroy;
wl_signal_add(&alloc->events.destroy, &swapchain->allocator_destroy); wl_signal_add(&alloc->events.destroy, &swapchain->allocator_destroy);
wlr_addon_set_init(&swapchain->addons);
return swapchain; return swapchain;
} }
@ -54,6 +85,7 @@ void wlr_swapchain_destroy(struct wlr_swapchain *swapchain) {
} }
wl_list_remove(&swapchain->allocator_destroy.link); wl_list_remove(&swapchain->allocator_destroy.link);
wlr_drm_format_finish(&swapchain->format); wlr_drm_format_finish(&swapchain->format);
wlr_addon_set_finish(&swapchain->addons);
free(swapchain); free(swapchain);
} }
@ -98,13 +130,25 @@ struct wlr_buffer *wlr_swapchain_acquire(struct wlr_swapchain *swapchain) {
return NULL; return NULL;
} }
struct wlr_swapchain_buffer *swapchain_buffer =
calloc(1, sizeof(*swapchain_buffer));
if (swapchain_buffer == NULL) {
return NULL;
}
swapchain_buffer->swapchain = swapchain;
wlr_log(WLR_DEBUG, "Allocating new swapchain buffer"); wlr_log(WLR_DEBUG, "Allocating new swapchain buffer");
free_slot->buffer = wlr_allocator_create_buffer(swapchain->allocator, free_slot->buffer = wlr_allocator_create_buffer(swapchain->allocator,
swapchain->width, swapchain->height, &swapchain->format); swapchain->width, swapchain->height, &swapchain->format);
if (free_slot->buffer == NULL) { if (free_slot->buffer == NULL) {
wlr_log(WLR_ERROR, "Failed to allocate buffer"); wlr_log(WLR_ERROR, "Failed to allocate buffer");
free(swapchain_buffer);
return NULL; return NULL;
} }
wlr_addon_init(&swapchain_buffer->buffer_addon, &free_slot->buffer->addons,
NULL, &buffer_addon_impl);
return slot_acquire(swapchain, free_slot); return slot_acquire(swapchain, free_slot);
} }