It now is disabled if:
-Lacking hardware support for FBOs
-RenderDeferred not permitted in gpu feature table
-RenderAvatarVP not permitted in gpu feature table
-VertexShaderEnable is enabled and permitted in gpu feature table
-WindLightUseAtmosShaders is enabled and permitted in gpu feature table
Enabling deferred now requires WindLightUseAtmosShaders to be on beforehand, instead of blindly enabling it.
Deferred fastalpha behaves a bit better.
Pulled over patch for https://jira.secondlife.com/browse/STORM-336 and https://jira.secondlife.com/browse/STORM-1011 from linden repo
Sky rendered using new LL method. Assuming this fixes issues on AMD cards(works on cat 11.2)
Added a few things missed related to spatial-parition updating.
Added 'SkipReflectOcclusionUpdates' setting that prevents occlusion updates for reflection pass. Less taxing on CPU.
Re-structured some shader loading/unloading handling.
These changes are pretty experimental. I'll be holding off of tweaking the paramater managers(among other things) until I know if this stuff is working correctly.
Fixed avatar shadows on AMD (and any other sane GLSL compiler)
Fixed windows compile:
-curl version was updated after running develop.py. Not sure if applicable to linux/darwin
-new llqtwebkit version on windows, since the old url is now invalid.
