Hi George,

I am not sure if this is the right forum to ask my questions, so please move the topic if it doesn't fit here.

I am totally new to 3DGS and found your AUM as a fantastic resource for beginners like me to learn about the various aspects of the system.

One of your many samples that really caught me is the golf game from AUM 63. When starting to make myself familiar with Lite-C I tried to convert your golf sample from the old code to lite-c. This mainly works, but I have one huge problem left and actually I do not even know where to start looking for a solution:
When I run the new lite-c code with your (A6)-compiled levels the sample runs fast and smooth, even with "cheap" hardware like the GM onboard chips.
However when recompiling the level as a A7 map, the framerate drops dramatically and the sample is actually unplayable on the aforementioned GM chip.
After simply recompiling the level as A7 I noticed some very obvious differences, especially the level was completely dark until I placed a light source. I guess there are a lot more differences, that need consideration, but for a beginner it is really hard to find these out. On the other hand it is almost impossible to learn about 3DGS without looking at the many samples.
Both the A6 version and the A7 version are here, in case you (or anybody else) would like to take a look and probably have some advice for me, how to solve this:
Golf (A6)
Golf (A7)
I am using the latest 7.10 as Extra version.
Perhaps, the reuse of old A6 levels would also be a valuable feature in one of the coming AUM issues?

Many thanks for your help!
Stefan