PickingRenderer very laggy, slow about rajawali HOT 13 CLOSED

oh I forgot, I using in Live Wallpapers

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thanks, and one more: on the tutorial if selecting a monkey the monkey will be bigger. Is there a way to rturn a value only if select an object? so, a NAME string, or other...?

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I tried it again, with the new files, but this is laggy again... (or please upload the new version somewhere)
I just removed the jar files, and copy paste the rajawali src files to my project.

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Strange. What device are you using?

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galaxy s2

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I will be working on this today so maybe an update tomorrow? That is unless Dennis beats me to it :-P

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Please go ahead Ian, I have plenty of other things to focus on ;-)

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I implemented your listener in my wallpaper and it seemed to mostly miss and I can also comment that I am seeing the lag as well. It will probably be a few days before I can finish my thoughts on how to improve it but essentially I am thinking bullet hit detection may be a acceptable route to take. I'll post up again when I get a demo working.

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The way it currently works is that it does a render in the background with no shading, just colors. So that's a unique color for every object. Then it reads a pixel from the frame buffer and then it figures out to which object the color belongs to.
There's a lag the first time an object is picked because that's when the frame buffer is created. This could be sped up by creating the frame buffer in advance.
But the other ones will still have a slight lag. That's because it has to request a render form glsurfaceview, it can't do it immediately.
So a good alternative for this will probably be ray picking.

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: nod :

That makes sense. I believe some of my slow down comes from the number of objects I am rendering. Currently its 86. This really is not a strain for the GPU but the CPU seems to waste a lot of time giving the GPU instructions. I think the object picking only strains my poor design further.

I was planning to attempt rewriting my wallpaper in a style similar to your 2000 planes example which should make everything exponentially faster by offloading a lot more work to the GPU. Not sure if this will jive well with wanting to detect collisions/touches against the specific cubes though unfortunately.

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Any news on this lag?

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I was not able to come up with a solution yet. I am looking at ray casting and looking at libgdx to see if maybe they have an implemented solution to this issue.

I have been incredibly busy this week and I will be out of town all weekend. So, if you have some free time and think you can come up with a sample of how to do it better I would be more than happy to help you get it working and functional in Rajawali.

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Closing this issue. A picking renderer has been put on the todo list.

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