Hello
I was nicely forwarded to this forum from the support community and i hope im right here for my problem.
In my company, we use new I5 motherboards with internal HD graphics, latest video
drivers. We have applications which draw a lot of line segments (not
connected), say 20.000 or more per frame. We still have to use good old
GDI functions which are quite fast doing so when we use the API call
cdc:polypolyline
which works a bit like OpenGL or directX, that means all lines are drawn before the graphics is updated. But only for this call, its not a scene rendering for all draw commands.
Now,
this api call does still work for i5 HD graphics, but it is incredible
slow. It looks like that it is internally changed to a set of
moveto-lineto commands. I get comaparable timings when i switch my code
to a loop of moveto - lineto.
Why does HD graphics dont support anymore fast 2D accerlation? I think some CAD Software would require this also.
Do you have better performances with other apis except for opengl/directx etc. (we cant use scene rendering for some reasons. Is GPA supporting this call ?
Thank you very much for help
Stefan
