buffer: add width and height

include/wlr/types/wlr_buffer.h

@@ -32,6 +32,8 @@ struct wlr_buffer_impl {
 struct wlr_buffer {
 	const struct wlr_buffer_impl *impl;
 
+	int width, height;
+
 	bool dropped;
 	size_t n_locks;
 
@@ -47,7 +49,7 @@ struct wlr_buffer {
  * they should call wlr_buffer_drop.
  */
 void wlr_buffer_init(struct wlr_buffer *buffer,
-	const struct wlr_buffer_impl *impl);
+	const struct wlr_buffer_impl *impl, int width, int height);
 /**
  * Unreference the buffer. This function should be called by producers when
  * they are done with the buffer.

types/wlr_buffer.c

@@ -7,9 +7,11 @@
 #include "util/signal.h"
 
 void wlr_buffer_init(struct wlr_buffer *buffer,
-		const struct wlr_buffer_impl *impl) {
+		const struct wlr_buffer_impl *impl, int width, int height) {
 	assert(impl->destroy);
 	buffer->impl = impl;
+	buffer->width = width;
+	buffer->height = height;
 	wl_signal_init(&buffer->events.destroy);
 	wl_signal_init(&buffer->events.release);
 }
@@ -212,6 +214,9 @@ struct wlr_client_buffer *wlr_client_buffer_import(
 		return NULL;
 	}
 
+	int width, height;
+	wlr_resource_get_buffer_size(resource, renderer, &width, &height);
+
 	struct wlr_client_buffer *buffer =
 		calloc(1, sizeof(struct wlr_client_buffer));
 	if (buffer == NULL) {
@@ -219,7 +224,7 @@ struct wlr_client_buffer *wlr_client_buffer_import(
 		wl_resource_post_no_memory(resource);
 		return NULL;
 	}
-	wlr_buffer_init(&buffer->base, &client_buffer_impl);
+	wlr_buffer_init(&buffer->base, &client_buffer_impl, width, height);
 	buffer->resource = resource;
 	buffer->texture = texture;
 	buffer->resource_released = resource_released;