[opensource-dev] Basic Shaders and FPS

[Hyang Zhao]

on same mac pro with radeon 5770, all shaders on
Second Life 2.7.6 (234377)  75 fps with one avatar, 52-60 fps with 2 avatars in view, drops down to about 20 depends of how much avies around, eventually crashing, depends of how fast memory corruption going.
Second Life 2.7.6 (234497)  15 fps with 1 avatar (own) and when about 2-3 and more avies around drops down to 2 fps and then coming nice hang or when we switching shaders off also crashing eventually.

usual errors all the same and i guess Bao working on this bug currently 

llrender/llvertexbuffer.cpp(1082) : error
ERROR: mapVertexBuffer: memory allocation for vertex data failed.

newview/llappviewer.cpp(1401) : error
ERROR: mainLoop: Bad memory allocation in LLAppViewer::mainLoop()!

WARNING: log_glerror: GL Error: 1285 GL Error String: out of memory
INFO: mapVertexBuffer: Available physical mwmory(KB): 4294967295
INFO: mapVertexBuffer: Available virtual memory(KB): 4294967295
llrender/llvertexbuffer.cpp(1082) : error
ERROR: mapVertexBuffer: memory allocation for vertex data failed.

but regardless of those errors above, i wonder why after fixing transparency bug we getting that fps drop.

On 29.06.2011, at 23:11, Hitomi Tiponi wrote:

> 
> That is why there are the Low-Medium-High-Ultra settings - so that people don't need to know about shaders, just that sliding the slider right makes things look better but slower.  The individual settings for each standard setting (e.g. Low) could be debated, but the approach seems to work pretty well. And it is not just shaders that make a big difference - LOD and Draw Distance also have  a big effect.
> 
> >I was messing with my oldish iMac (ATI 2600 Pro) and I discovered that the
> > main thing that makes all the difference to FPS is the shaders.
> ...
> >So, this made me crave a custom button for turning shaders on and off (yeah,
> >CMD-P/Graphics/Basic Shader is easy.  Just thinking of all the people who
> >don't even know that preferences exists  8-)  Need FPS?  <<click off>>.
> >Want things to look better?  <<click on>>  Easy peasy.
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