Start assets

TODO.txt

@@ -1,3 +1,9 @@
+- background sky rendering efficiently:
+  - first draw the solid color top and bottom
+  - then render the 3D scene
+  - then iterate over the strip that should have the sky texture and only draw
+    to pixels where depth buffer was not overwritten (this step can be left out
+    in case we have depth buffer or sky turned off)
 TOTAL SIZE OF TEXTURES:
   - 64 x 64 x 2 = 8192, 6 x floor + 2 x wall + 1 x car = 8 * 8192 = 73728
   - (128 x 128 x 1) x 3 background = 49152