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optimization: Render on pixmaps and copy the result on Stack_Wins

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This should speed up the rendering of Stack_Wins with many window
decorations and it should considerably reduce flicker.
This commit is contained in:
Michael Stapelberg
2009-07-17 18:32:40 +02:00
parent 0434b6ea3d
commit 5b51c8c6f0
7 changed files with 80 additions and 7 deletions
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11
src/util.c
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@ -385,7 +385,8 @@ void leave_stack_mode(xcb_connection_t *conn, Container *container) {
SLIST_REMOVE(&stack_wins, stack_win, Stack_Window, stack_windows);
xcb_free_gc(conn, stack_win->gc);
xcb_free_gc(conn, stack_win->pixmap.gc);
xcb_free_pixmap(conn, stack_win->pixmap.id);
xcb_destroy_window(conn, stack_win->window);
stack_win->rect.width = -1;
@ -423,9 +424,11 @@ void switch_layout_mode(xcb_connection_t *conn, Container *container, int mode)
struct Stack_Window *stack_win = &(container->stack_win);
stack_win->window = create_window(conn, rect, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_CURSOR_LEFT_PTR, mask, values);
/* Generate a graphics context for the titlebar */
stack_win->gc = xcb_generate_id(conn);
xcb_create_gc(conn, stack_win->gc, stack_win->window, 0, 0);
/* Initialize the entry for our cached pixmap. It will be
* created as soon as it’s needed (see cached_pixmap_prepare). */
memset(&(stack_win->pixmap), 0, sizeof(struct Cached_Pixmap));
stack_win->pixmap.referred_rect = &stack_win->rect;
stack_win->pixmap.referred_drawable = stack_win->window;
stack_win->container = container;