[SDL] Hardware Surfaces

[Hadi Moshayedi]

Hi,
 I am new to graphics programming.
 When I access surface.pixels in a hardware surface, am I accessing
somewhere in main memory, or in graphics hardware memory?
 I read in some SDL tutorial that reading from graphics h/w memory is slow,
but writing to it is fast. Then reading from surface.pixels is slow?

 Regards,
   -- Hadi
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