update readme

README.md

@@ -1,6 +1,6 @@
 # polypartiCL
 
-Naive photon simulator with SYCL and [raylib](https://raylib.com)
+Naive photon simulator using [SYCL](https://khronos.org/sycl/) and [raylib](https://raylib.com)
 
 This project uses the [raylib-cpp](https://robloach.github.io/raylib-cpp) wrapper library and is provided in the /include directory.
 raylib-cpp is licensed under an unmodified zlib/libpng license. A copy of this license is provided at /include/LICENSE.
@@ -8,15 +8,20 @@ raylib-cpp is licensed under an unmodified zlib/libpng license. A copy of this l
 cmake assumes icpx and the [Intel OneAPI](https://www.intel.com/content/www/us/en/developer/tools/oneapi/overview.html) environment is installed.
 You'll need these even if you don't compile with cmake until SYCL gets native LLVM support.
 
+All simulation code uses single-precision floating point arithmetic to ensure compatability with (integrated) graphics packages that do not support 64-bit floating point.
+
 polypartiCL is licensed with the 3-clause BSD license.
 
 ## Todo
+- Reduce corner escaping
+    - Ability limited by f32 precision
 - Rewrite & optimize simulation code, store all points/velocites in one array and submit once
     - Consider modelling each particle and all its relevant data points individually
     - Submit each relevant data point by pointer offset, size of struct is irrelevant as long as it is constant, only necessary data will be submitted to kernel
 - Add linear beams
 - Add environment objects / multiple rooms per screen
 - Add timed events
+- Add compile option for 64-bit floating point simulation
 
 ![Screenshot 1](https://alexlardner.com/img/1.png)
 ![Screenshot 2](https://alexlardner.com/img/2.png)