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Help => Graphics => Topic started by: vicer1234 on June 19, 2011, 02:49:03 pm

Title: slow frame rate
Post by: vicer1234 on June 19, 2011, 02:49:03 pm

Hi,
I tried to implement the water ripple effect using the image manipulation similar to shown in link http://www.youtube.com/watch?v=fdVLPoJtDgA&feature=channel_video_title
The strange thing in it is, when i use a large image like 800X600 or 1024X768 etc the processing becomes very slow.

It happens like its consuming lot of CPU!!! but I dont get the idea why is it happening since the CPU can handle good amount of
calculations at a time. If the pixels numbers are like 1024*768 = 786432 then also it can process it faster!!!!
Then why is it very slow in rendering?????

All suggestions are welcome

Title: slow frame rate
Post by: Laurent on June 19, 2011, 02:52:22 pm

How are we supposed to tell you why your code is slow, if we can't see it? ;)

And by the way, pixel shaders provide a much faster solution for this kind of effect.

Title: slow frame rate
Post by: Groogy on June 19, 2011, 03:28:01 pm

I would also propose pixel shaders so that it is done on the GPU instead, it's pretty much made to do heavy calculations fast.