Merge branch 'surface-texture-v2' into 'master'

Replace wlr_client_buffer with wlr_surface_texture, take 2

See merge request wlroots/wlroots!4437

include/wlr/render/wlr_texture.h

@@ -24,6 +24,10 @@ struct wlr_texture {
 	uint32_t width, height;
 
 	struct wlr_renderer *renderer;
+
+	struct {
+		struct wl_signal destroy;
+	} events;
 };
 
 struct wlr_texture_read_pixels_options {

include/wlr/types/wlr_buffer.h

@@ -132,33 +132,4 @@ bool wlr_buffer_begin_data_ptr_access(struct wlr_buffer *buffer, uint32_t flags,
 	void **data, uint32_t *format, size_t *stride);
 void wlr_buffer_end_data_ptr_access(struct wlr_buffer *buffer);
 
-/**
- * A client buffer.
- */
-struct wlr_client_buffer {
-	struct wlr_buffer base;
-
-	/**
-	 * The buffer's texture, if any. A buffer will not have a texture if the
-	 * client destroys the buffer before it has been released.
-	 */
-	struct wlr_texture *texture;
-	/**
-	 * The buffer this client buffer was created from. NULL if destroyed.
-	 */
-	struct wlr_buffer *source;
-
-	// private state
-
-	struct wl_listener source_destroy;
-
-	size_t n_ignore_locks;
-};
-
-/**
- * Get a client buffer from a generic buffer. If the buffer isn't a client
- * buffer, returns NULL.
- */
-struct wlr_client_buffer *wlr_client_buffer_get(struct wlr_buffer *buffer);
-
 #endif

include/wlr/types/wlr_compositor.h

@@ -119,16 +119,29 @@ struct wlr_surface_output {
 	struct wl_listener destroy;
 };
 
+struct wlr_surface_texture {
+	struct wlr_texture *texture;
+	// The buffer this surface texture was created from. NULL if released.
+	struct wlr_buffer *buffer;
+	// True if the texture won't be mutated by client surface commits.
+	bool locked;
+
+	// private state
+
+	struct wl_listener buffer_release;
+	bool dropped;
+};
+
 struct wlr_surface {
 	struct wl_resource *resource;
 	struct wlr_renderer *renderer; // may be NULL
 	/**
-	 * The surface's buffer, if any. A surface has an attached buffer when it
+	 * The surface's texture, if any. A surface has an attached buffer when it
 	 * commits with a non-null buffer in its pending state. A surface will not
-	 * have a buffer if it has never committed one, has committed a null buffer,
-	 * or something went wrong with uploading the buffer.
+	 * have a texture if it has never committed one, has committed a null
+	 * buffer, or something went wrong with uploading the buffer.
 	 */
-	struct wlr_client_buffer *buffer;
+	struct wlr_surface_texture *texture;
 	/**
 	 * The last commit's buffer damage, in buffer-local coordinates. This
 	 * contains both the damage accumulated by the client via
@@ -257,6 +270,9 @@ struct wlr_compositor {
 typedef void (*wlr_surface_iterator_func_t)(struct wlr_surface *surface,
 	int sx, int sy, void *data);
 
+void wlr_surface_texture_lock(struct wlr_surface_texture *surf_tex);
+void wlr_surface_texture_unlock(struct wlr_surface_texture *surf_tex);
+
 /**
  * Set the lifetime role for this surface.
  *

include/wlr/types/wlr_scene.h

@@ -184,6 +184,7 @@ struct wlr_scene_buffer {
 
 	uint64_t active_outputs;
 	struct wlr_texture *texture;
+	bool own_texture;
 	struct wlr_linux_dmabuf_feedback_v1_init_options prev_feedback_options;
 
 	bool own_buffer;
@@ -191,6 +192,7 @@ struct wlr_scene_buffer {
 	bool buffer_is_opaque;
 
 	struct wl_listener buffer_release;
+	struct wl_listener texture_destroy;
 };
 
 /** A viewport for an output in the scene-graph */
@@ -399,6 +401,12 @@ void wlr_scene_buffer_set_buffer(struct wlr_scene_buffer *scene_buffer,
 void wlr_scene_buffer_set_buffer_with_damage(struct wlr_scene_buffer *scene_buffer,
 	struct wlr_buffer *buffer, const pixman_region32_t *region);
 
+/**
+ * Sets the buffer's backing texture.
+ */
+void wlr_scene_buffer_set_texture(struct wlr_scene_buffer *scene_buffer,
+	struct wlr_texture *texture);
+
 /**
  * Sets the buffer's opaque region. This is an optimization hint used to
  * determine if buffers which reside under this one need to be rendered or not.