render: Reimplement rendering engine using functional combinators.

Warning: This is a huge commit.

I completely gutted the old scene graph and replaced it with a somewhat
monadic rendering combinator module instead.  The interface remains
purely functional, but replaces the <model> data type with procedures in
the rendering monad instead.  This opens the door for
rendering *anything*, not just meshes.  Now I can implement particle
systems and other non-static things.

1 files changed, 1 insertions, 3 deletions

diff --git a/sly.scm b/sly.scm
index b92536a..2c54dfa 100644
--- a/sly.scm
+++ b/sly.scm
@@ -35,18 +35,16 @@
         (sly window)
         (sly repl)
         (sly utils)
+        (sly render)
         (sly render color)
         (sly render font)
         (sly render sprite)
         (sly render texture)
-        (sly render model)
         (sly render camera)
-        (sly render scene)
         (sly input keyboard)
         (sly input mouse)
         (sly math)
         (sly math rect)
-        (sly math transform)
         (sly math vector)))
 
     (for-each (let ((i (module-public-interface (current-module))))