[fpc-pascal] FPC Graphics options?

[Jon Foster]

On 05/12/2017 03:11 AM, Graeme Geldenhuys wrote:
> On 2017-05-12 00:57, Jon Foster wrote:
>> One of the last set of benchmarks I did that
>
> Please note, I did not set out to implement a benchmark. I think all 
> purpose written benchmarks are bias and unrealistic. I implemented a 
> legit software raycaster for a game I was developing. Initially I was 
> going to implement it in Java, but then thought I would rather like to 
> use my much loved Object Pascal language. That plan failed in the end.
>
>
>> Two things surprised me when I ran this: the Java speed and the speed of
>> the initial JavaScript run. I used SpiderMonkey (Mozilla) for the JS test
>> and OpenJDK 6 for Java.
>
> I was developing with Java 8 (OpenJDK). And yes, Java speed is phenomenal 
> these days. A far cry from the performance seen in the late 90's.
>
>
>> In short if your suffering a performance issue I'd look to the libraries in
>> use for poor implementations. Like anything else, bad software can be
>> written with FPC too.
>
> Both the Java and Object Pascal code was poorly written - because they 
> were very closely based on a JavaScript implementation which was meant 
> for a 4KBytes competition (see how much your can do in just 4KB).
>
> Still, the Java compiler did a better job in optimising the final binary 
> code. The developers in the Lazarus Forum made numerous suggestions on 
> how to improve the speed of the Object Pascal version. I tried everything 
> they suggested and maybe gained 2-5 FPS in the end. Still nothing 
> compared to the performance of the Java or C versions, where no manual 
> optimisation was applied.
I don't suppose you could post a link to the Lazarus forum discussion. I'm 
extremely curious and so far my hunting on the forum hasn't turned up anything.

THX!

-- 
Sent from my Debian Linux laptop -- http://www.debian.org/intro/about

Jon Foster
JF Possibilities, Inc.
jon at jfpossibilities.com