[fpc-pascal] FPC Graphics options?

noreply at z505.com noreply at z505.com
Wed May 17 08:22:28 CEST 2017


On 2017-05-17 00:14, noreply at z505.com wrote:
> On 2017-05-16 09:10, Jon Foster wrote:
> 
>> I think the key word in Graeme's complaint is "game". And I'm willing
>> to bet that most of his envisioned gaming scenarios deal with a lot of
>> floating point math and the more advanced math functions. A quick
>> glance over his example code and I'm willing to bet that the "math"
>> unit providing the sqrt(), cos(), sin() and others is the bottle neck.
>> But that's just a knee-jerk reaction. Seems to me I read a while back
>> that a ton of effort had not gone into them.
>> 


> 
> Could those math routines just be written in assembly with a FastXXX
> unit? i.e. FastMM is a fast memory manager, so you could have a
> FastCRT, fastWhatever, FastMath...
> 

Upon further inspection it seems fpc already uses internal functions
such as
fpc_in_sqrt_real

which are defined as integers that fpc references magically somehow 
internally..

So probably already fast, but I'd have to check further.

I don't know how internal functions work. Internal to the compiler 
source code, internal as in direct cpu calls that the cpu so gladly 
gives you?




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