doc: api: Mention the module name for texture and sprite APIs.

1 files changed, 17 insertions, 3 deletions

diff --git a/doc/api.texi b/doc/api.texi
index ebac327..f1726d9 100644
--- a/doc/api.texi
+++ b/doc/api.texi
@@ -2,6 +2,7 @@
 * Kernel::                      The fundamental components.
 * Math::                        Linear algebra, spatial partitioning, and more.
 * Graphics::                    Eye candy.
+* Audio::                       Make some noise.
 * Scripting::                   Bringing the game world to life.
 @end menu
 
@@ -1334,6 +1335,10 @@ blocks to implement additional rendering techniques.
 @node Textures
 @subsection Textures
 
+Textures are essentially images: a 2D grid of color values.  The
+@code{(chickadee render texture)} module provides an interface for
+working with texture objects.
+
 @deffn {Procedure} load-image file [#:min-filter nearest] @
        [#:mag-filter nearest] [#:wrap-s repeat] [#:wrap-t repeat]
 
@@ -1437,9 +1442,12 @@ Return the texture region in @var{atlas} at @var{index}.
 For those who are new to this game, a sprite is a 2D rectangular
 bitmap that is rendered to the screen.  For 2D games, sprites are the
 most essential graphical abstraction.  They are used for drawing maps,
-players, NPCs, items, particles, text, etc.  In Chickadee, bitmaps are
-stored in textures (@pxref{Textures}) and can be used to draw sprites
-via the @code{draw-sprite} procedure.
+players, NPCs, items, particles, text, etc.
+
+In Chickadee, the @code{(chickadee render sprite)} module provides the
+interface for working with sprites.  Bitmaps are stored in textures
+(@pxref{Textures}) and can be used to draw sprites via the
+@code{draw-sprite} procedure.
 
 @deffn {Procedure} draw-sprite texture position @
        [#:tint white] [#:origin] [#:scale] [#:rotation] [#:blend-mode alpha] @
@@ -2776,6 +2784,12 @@ Return the binding location of @var{attribute}.
 Return the data type of @var{attribute}.
 @end deffn
 
+@node Audio
+@section Audio
+
+Most games need to play audio.  Background music to set the mood and
+many sound effects for when things happen.
+
 @node Scripting
 @section Scripting