[fpc-pascal] Implementing AggPas with PtcGraph

[Stefan V. Pantazi]

While in lazarus open agg_rasterizer_scanline_aa.pas, go ro line 611 
press Ctr and click on ptrcomp. It should open agg_basics.pas, the 
comment may apply to your situation.

It is unclear to me whether you are on a win32 or win64 OS? If you are 
already on a win64 machine then your default target CPU should already 
be x86_64. why do you need fpc-3.0.2-cross-i386-win32-win64?


On 06/13/2017 08:25 PM, James Richters wrote:
>> Noting your problems with compilation, you may want to consider using Lazarus IDE as well.
>
> I have just installed Lazarus but still can't get the aggpas_ptcgraph_output.pas sample program to run when compiled for x64.
> Here is what I have done.
>
> Downloaded and installed lazarus-1.6.0-fpc-3.0.0-win64.exe and accepted all defaults
> Downloaded and installed lazarus-1.6.4-fpc-3.0.2-cross-i386-win32-win64.exe and accepted the default install directory.
> Copied aggpas to C:\lazarus\fpc\3.0.2\units\i386-win32
> Copied aggpas to C:\lazarus\fpc\3.0.2\units\x86_64-win64
>
> Opened a sample program the uses just ptcgraph, when it asked to create a project I said yes then selected 'Program' from the list
> I was able to compile and run it with options for OS win32 CPU i386 as well as OS  win64 CPU x86_64 and it ran fine with both versions
> I opened aggpas_ptcgraph_output.pas the same way and selected program.  If I select OS win32 CPU i386 it compiles and runs fine, no problems
> When I select OS  win64 CPU x86_64 and try to run it, it opens both the console window and graphics window, then I get an error box reading:
>
> Project aggpas_ptcgraph_output raised exception class 'external: SIGSEGV'
> In file 'C:\lazarus\fpc\3.0.2\u..\agg_rasterizer_scanline_aa.pas' at line 611 while cell_aa_ptr_prt(ptrcomp(j) + 1 * 4^^.x<J^.x do
>
> Any ideas why this is happening?
>
> James
>
>
>
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