render: replace wlr_texture_write_pixels with update_from_buffer

This lets the renderer handle the wlr_buffer directly, just like it
does in texture_from_buffer. This also allows the renderer to batch
the rectangle updates, and update more than the damage region if
desirable (e.g. too many rects), so can be more efficient.

2 files changed, 13 insertions, 10 deletions

diff --git a/include/wlr/render/interface.h b/include/wlr/render/interface.h
index 7e923353..20d755f9 100644
--- a/include/wlr/render/interface.h
+++ b/include/wlr/render/interface.h
@@ -54,10 +54,8 @@ void wlr_renderer_init(struct wlr_renderer *renderer,
 	const struct wlr_renderer_impl *impl);
 
 struct wlr_texture_impl {
-	bool (*write_pixels)(struct wlr_texture *texture,
-		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,
-		const void *data);
+	bool (*update_from_buffer)(struct wlr_texture *texture,
+		struct wlr_buffer *buffer, pixman_region32_t *damage);
 	void (*destroy)(struct wlr_texture *texture);
 };
 
diff --git a/include/wlr/render/wlr_texture.h b/include/wlr/render/wlr_texture.h
index 0f39b8a8..5d4b0b61 100644
--- a/include/wlr/render/wlr_texture.h
+++ b/include/wlr/render/wlr_texture.h
@@ -9,6 +9,7 @@
 #ifndef WLR_RENDER_WLR_TEXTURE_H
 #define WLR_RENDER_WLR_TEXTURE_H
 
+#include <pixman.h>
 #include <stdint.h>
 #include <wayland-server-core.h>
 #include <wlr/render/dmabuf.h>
@@ -37,13 +38,17 @@ struct wlr_texture *wlr_texture_from_dmabuf(struct wlr_renderer *renderer,
 	struct wlr_dmabuf_attributes *attribs);
 
 /**
-  * Update a texture with raw pixels. The texture must be mutable, and the input
-  * data must have the same pixel format that the texture was created with.
+  * Update a texture with a struct wlr_buffer's contents.
+  *
+  * The update might be rejected (in case the texture is immutable, the buffer
+  * has an unsupported type/format, etc), so callers must be prepared to fall
+  * back to re-creating the texture from scratch via wlr_texture_from_buffer().
+  *
+  * The damage can be used by the renderer as an optimization: only the supplied
+  * region needs to be updated.
   */
-bool wlr_texture_write_pixels(struct wlr_texture *texture,
-	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,
-	const void *data);
+bool wlr_texture_update_from_buffer(struct wlr_texture *texture,
+	struct wlr_buffer *buffer, pixman_region32_t *damage);
 
 /**
  * Destroys the texture.