compositor: Move update_shm_texture() to gles2-renderer.c

We rename it flush_damage() as it's the point where we update our rendering
API source (eg, the gles2 texture) according to the accumulated damage,
if necessary.

src/compositor.c

@@ -180,9 +180,6 @@ weston_client_launch(struct weston_compositor *compositor,
 	return client;
 }
 
-static void
-update_shm_texture(struct weston_surface *surface);
-
 static void
 surface_handle_buffer_destroy(struct wl_listener *listener, void *data)
 {
@@ -191,7 +188,7 @@ surface_handle_buffer_destroy(struct wl_listener *listener, void *data)
 			     buffer_destroy_listener);
 
 	if (es->buffer && wl_buffer_is_shm(es->buffer))
-		update_shm_texture(es);
+		gles2_renderer_flush_damage(es);
 
 	es->buffer = NULL;
 }
@@ -934,49 +931,12 @@ fade_frame(struct weston_animation *animation,
 	}
 }
 
-static void
-update_shm_texture(struct weston_surface *surface)
-{
-#ifdef GL_UNPACK_ROW_LENGTH
-	pixman_box32_t *rectangles;
-	void *data;
-	int i, n;
-#endif
-
-	glBindTexture(GL_TEXTURE_2D, surface->textures[0]);
-
-	if (!surface->compositor->has_unpack_subimage) {
-		glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
-			     surface->pitch, surface->buffer->height, 0,
-			     GL_BGRA_EXT, GL_UNSIGNED_BYTE,
-			     wl_shm_buffer_get_data(surface->buffer));
-
-		return;
-	}
-
-#ifdef GL_UNPACK_ROW_LENGTH
-	/* Mesa does not define GL_EXT_unpack_subimage */
-	glPixelStorei(GL_UNPACK_ROW_LENGTH, surface->pitch);
-	data = wl_shm_buffer_get_data(surface->buffer);
-	rectangles = pixman_region32_rectangles(&surface->damage, &n);
-	for (i = 0; i < n; i++) {
-		glPixelStorei(GL_UNPACK_SKIP_PIXELS, rectangles[i].x1);
-		glPixelStorei(GL_UNPACK_SKIP_ROWS, rectangles[i].y1);
-		glTexSubImage2D(GL_TEXTURE_2D, 0,
-				rectangles[i].x1, rectangles[i].y1,
-				rectangles[i].x2 - rectangles[i].x1,
-				rectangles[i].y2 - rectangles[i].y1,
-				GL_BGRA_EXT, GL_UNSIGNED_BYTE, data);
-	}
-#endif
-}
-
 static void
 surface_accumulate_damage(struct weston_surface *surface,
 			  pixman_region32_t *opaque)
 {
 	if (surface->buffer && wl_buffer_is_shm(surface->buffer))
-		update_shm_texture(surface);
+		gles2_renderer_flush_damage(surface);
 
 	if (surface->transform.enabled) {
 		pixman_box32_t *extents;

src/compositor.h

@@ -797,5 +797,7 @@ gles2_renderer_init(struct weston_compositor *ec);
 void
 gles2_renderer_repaint_output(struct weston_output *output,
 			      pixman_region32_t *output_damage);
+void
+gles2_renderer_flush_damage(struct weston_surface *surface);
 
 #endif

src/gles2-renderer.c

@@ -674,6 +674,43 @@ gles2_renderer_repaint_output(struct weston_output *output,
 
 }
 
+WL_EXPORT void
+gles2_renderer_flush_damage(struct weston_surface *surface)
+{
+#ifdef GL_UNPACK_ROW_LENGTH
+	pixman_box32_t *rectangles;
+	void *data;
+	int i, n;
+#endif
+
+	glBindTexture(GL_TEXTURE_2D, surface->textures[0]);
+
+	if (!surface->compositor->has_unpack_subimage) {
+		glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
+			     surface->pitch, surface->buffer->height, 0,
+			     GL_BGRA_EXT, GL_UNSIGNED_BYTE,
+			     wl_shm_buffer_get_data(surface->buffer));
+
+		return;
+	}
+
+#ifdef GL_UNPACK_ROW_LENGTH
+	/* Mesa does not define GL_EXT_unpack_subimage */
+	glPixelStorei(GL_UNPACK_ROW_LENGTH, surface->pitch);
+	data = wl_shm_buffer_get_data(surface->buffer);
+	rectangles = pixman_region32_rectangles(&surface->damage, &n);
+	for (i = 0; i < n; i++) {
+		glPixelStorei(GL_UNPACK_SKIP_PIXELS, rectangles[i].x1);
+		glPixelStorei(GL_UNPACK_SKIP_ROWS, rectangles[i].y1);
+		glTexSubImage2D(GL_TEXTURE_2D, 0,
+				rectangles[i].x1, rectangles[i].y1,
+				rectangles[i].x2 - rectangles[i].x1,
+				rectangles[i].y2 - rectangles[i].y1,
+				GL_BGRA_EXT, GL_UNSIGNED_BYTE, data);
+	}
+#endif
+}
+
 static const char vertex_shader[] =
 	"uniform mat4 proj;\n"
 	"attribute vec2 position;\n"