X-Git-Url: https://git.dogcows.com/gitweb?p=chaz%2Frasterize;a=blobdiff_plain;f=README;fp=README;h=4a614ea44d8e5ce97ccafe95a1120e1a98ad7bca;hp=4a1a889abe3058c2af096df026dfd84b5b8872fc;hb=07083c8dfbbd4fe48e84d86ce8d7e44e0719b84a;hpb=3955aa40277c4b86a43b21e78d55d2fea7b643ce

diff --git a/README b/README
index 4a1a889..4a614ea 100644
--- a/README
+++ b/README
@@ -8,8 +8,27 @@ Project 3 Notes
 To build, just `make' it.  You will need GNU make; it won't work well with any
 other kind of make(1).  Once built, the executable is called rasterize.
 
+Caveats:
+
+1. I happened to do Phong interpolation a little differently (i.e. not as
+good) compared to what is described in the project handout.  Instead of
+calculating the lighting vectors in eye-coordinates, I did it all in world
+coordinates.  So I had to save the camera position (already in world
+coordinates) from the scene file and transform each point vector of the
+geometry by just the view matrix.  Anyway, the results look a little bit
+different than the provide images, so maybe I didn't do it quite right.
+
+2. Contrary to the specification, the geometry color is not overridden by a
+texture map in this implementation.  Rather, the geometry color is
+multiplied by the texture color, so blending can work with texture mapping.
+
+3. The PPM importer doesn't handle comments, and the BMP importer is also
+quite picky about the depth and color space, though importing will fail
+without any useful explanation.
+
 Known to run on:
- * Linux 3.2.1-gentoo
- * NetBSD 5.1.2
+ * Linux 3.2.1-gentoo (x86_64)
+ * NetBSD 5.1.2 (amd64)
  * Darwin 10.8.0 (in the Mac lab)
+ * Win32 (tried with i686-mingw32-gcc)