Merge pull request #580 from emersion/screenshooter-renderer-backport

Backport screenshooter fixes from the renderer redesign v1

include/backend/headless.h

@@ -7,6 +7,7 @@
 struct wlr_headless_backend {
 	struct wlr_backend backend;
 	struct wlr_egl egl;
+	struct wlr_renderer *renderer;
 	struct wl_display *display;
 	struct wl_list outputs;
 	struct wl_list input_devices;

include/backend/wayland.h

@@ -6,6 +6,7 @@
 #include <wayland-server.h>
 #include <wayland-egl.h>
 #include <wlr/render/egl.h>
+#include <wlr/render.h>
 #include <wlr/backend/wayland.h>
 #include <wlr/types/wlr_box.h>
 #include <wayland-util.h>
@@ -19,6 +20,7 @@ struct wlr_wl_backend {
 	struct wl_list devices;
 	struct wl_list outputs;
 	struct wlr_egl egl;
+	struct wlr_renderer *renderer;
 	size_t requested_outputs;
 	struct wl_listener local_display_destroy;
 	/* remote state */

include/backend/x11.h

@@ -39,6 +39,7 @@ struct wlr_x11_backend {
 	struct wlr_input_device pointer_dev;
 
 	struct wlr_egl egl;
+	struct wlr_renderer *renderer;
 	struct wl_event_source *event_source;
 	struct wl_event_source *frame_timer;
 

include/wlr/backend.h

@@ -23,6 +23,7 @@ struct wlr_backend *wlr_backend_autocreate(struct wl_display *display);
 bool wlr_backend_start(struct wlr_backend *backend);
 void wlr_backend_destroy(struct wlr_backend *backend);
 struct wlr_egl *wlr_backend_get_egl(struct wlr_backend *backend);
+struct wlr_renderer *wlr_backend_get_renderer(struct wlr_backend *backend);
 
 uint32_t usec_to_msec(uint64_t usec);
 

include/wlr/backend/interface.h

@@ -9,6 +9,7 @@ struct wlr_backend_impl {
 	bool (*start)(struct wlr_backend *backend);
 	void (*destroy)(struct wlr_backend *backend);
 	struct wlr_egl *(*get_egl)(struct wlr_backend *backend);
+	struct wlr_renderer *(*get_renderer)(struct wlr_backend *backend);
 };
 
 void wlr_backend_init(struct wlr_backend *backend,

include/wlr/render.h

@@ -52,10 +52,17 @@ const enum wl_shm_format *wlr_renderer_get_formats(
 bool wlr_renderer_buffer_is_drm(struct wlr_renderer *renderer,
 	struct wl_resource *buffer);
 /**
- * Reads pixels and stores them in out_data as ARGB8888.
+ * Reads out of pixels of the currently bound surface into data. `stride` is in
+ * bytes.
  */
-void wlr_renderer_read_pixels(struct wlr_renderer *r, int x, int y,
-	int width, int height, void *out_data);
+bool wlr_renderer_read_pixels(struct wlr_renderer *r, enum wl_shm_format fmt,
+	uint32_t stride, uint32_t width, uint32_t height,
+	uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y, void *data);
+/**
+ * Checks if a format is supported.
+ */
+bool wlr_renderer_format_supported(struct wlr_renderer *r,
+	enum wl_shm_format fmt);
 /**
  * Destroys this wlr_renderer. Textures must be destroyed separately.
  */

include/wlr/render/interface.h

@@ -28,8 +28,12 @@ struct wlr_renderer_impl {
 		struct wlr_renderer *renderer, size_t *len);
 	bool (*buffer_is_drm)(struct wlr_renderer *renderer,
 		struct wl_resource *buffer);
-	void (*read_pixels)(struct wlr_renderer *renderer, int x, int y, int width,
-		int height, void *out_data);
+	bool (*read_pixels)(struct wlr_renderer *renderer, enum wl_shm_format fmt,
+		uint32_t stride, uint32_t width, uint32_t height,
+		uint32_t src_x, uint32_t src_y, uint32_t dst_x, uint32_t dst_y,
+		void *data);
+	bool (*format_supported)(struct wlr_renderer *renderer,
+		enum wl_shm_format fmt);
 	void (*destroy)(struct wlr_renderer *renderer);
 };
 

include/wlr/types/wlr_screenshooter.h

@@ -4,7 +4,6 @@
 
 struct wlr_screenshooter {
 	struct wl_global *wl_global;
-	struct wlr_renderer *renderer;
 	struct wl_list screenshots; // wlr_screenshot::link
 
 	struct wl_listener display_destroy;
@@ -23,8 +22,7 @@ struct wlr_screenshot {
 	void* data;
 };
 
-struct wlr_screenshooter *wlr_screenshooter_create(struct wl_display *display,
-	struct wlr_renderer *renderer);
+struct wlr_screenshooter *wlr_screenshooter_create(struct wl_display *display);
 void wlr_screenshooter_destroy(struct wlr_screenshooter *screenshooter);
 
 #endif