Update TODO list.

1 files changed, 5 insertions, 10 deletions

diff --git a/TODO.org b/TODO.org
index e282073..0f9c326 100644
--- a/TODO.org
+++ b/TODO.org
@@ -137,11 +137,11 @@
      Port http://wiki.call-cc.org/eggref/4/glls to guile?
 
 ** TODO Upgrade to SDL2
-   Guile bindings needed.
+   Write necessary bindings and release [[https://git.dthompson.us/guile-sdl2.git][guile-sdl2]].
 
-** TODO Nine patches
+** TODO "Nine patches"
     Images that have a resizable central area but fixed width/height
-    edges.
+    edges.  See [[https://developer.android.com/guide/topics/graphics/2d-graphics.html#nine-patch][this Android document]] for details.
 
 ** TODO Job control for agenda
    Allow for pausing and cancelling jobs.
@@ -155,11 +155,6 @@
    Remove the temporal aliasing in animation by interpolating between
    current and previous state of animated objects.
 
-** TODO Virtual DOM-like approach to rendering
-   Diff the previously drawn scene graph with the current one while
-   drawing.  Cache transformation matrices and other state to reduce
-   the cost of rendering.
-
 ** TODO Bitmap font rendering from tileset
    Some fonts aren't available in TTF format, only as a tileset image.
    It would very useful for 2D games to be able to render these.  Even
@@ -174,9 +169,9 @@
    - [X] New REPL server
      Use the (system repl coop-server) module in Guile 2.0.11.
    - [ ] Screencast
-   - [ ] Relatively complete documentation
+   - [-] Relatively complete documentation (it's a start)
    - [X] Clean up font module
    - [X] Add GLSL shaders
    - [X] Finish FRP module
    - [X] Make basic webpage with HTML docs
-   - [X] Basic scene graph (must support sprites and text)
+   - [X] Basic rendering (must support sprites and text)