3D OpenGL Engine

I found your problem.

First, your actual data is offset by 10 bytes. If this is can't be changed, then you can get around it by returning the pointer+10.

Second, your Integers are getting poked and peeked wrong. PeekInt bank,3,5 should poke 5 to byte 3. In your case, it pokes 5 to byte (3*4), or 12, plus the 10-byte offset.

In Blitz, you usually use a loop like this for integers:
For n=0 to (BankSize(bank)-1)/4
PeekInt(bank,n*4)
Next

But in your case, that would return values for every 16 bytes.


Allocating a memory buffer of size '8' should give you this:

*pointer
*pointer+1 byte
*pointer+2 byte
*pointer+3 byte
*pointer+4 byte
*pointer+5 byte
*pointer+6 byte
*pointer+7 byte

Now PokeInt(bank,4,69):
*pointer+0
*pointer+1
*pointer+2
*pointer+3
*pointer+4=69 ]
*pointer+5=69 |====This is all one integer,
*pointer+6=69 |====not 69 each byte
*pointer+7=69 ]

PokeInt(bank,1,52) would give:
*pointer+0
*pointer+1=52 ]
*pointer+2=52 |====This is all one integer,
*pointer+3=52 |====not 52 each byte
*pointer+4=52 ]
*pointer+5
*pointer+6
*pointer+7

But your DLL changes it to 1*4 (ignoring the 10-byte offset):
*pointer+0
*pointer+1
*pointer+2
*pointer+3
*pointer+4=52 ]
*pointer+5=52 |====This is all one integer,
*pointer+6=52 |====not 52 each byte
*pointer+7=52 ]