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+---- Thread: Running Amnesia without S3TC compression? (/thread-9739.html)
Running Amnesia without S3TC compression? - nobled - 08-13-2011
I downloaded the Amnesia demo (the installer filename says version 1.0.1... seems kinda old?), and I'm trying to run it in 64-bit Ubuntu 11.04, with the integrated Sandybridge GPU in my laptop.
Unfortunately, based on using apitrace to debug it, it seems like Amnesia is calling glCompressedTexImage2D() with internalFormat=GL_COMPRESSED_S3TC_DXT1_EXT, even though GL_EXT_texture_compression_s3tc isn't advertised in the extension string by the Intel graphics driver. (I'm using the latest version I can, installed from the xorg-edgers repository.)
Is it possible to run without s3tc compression? If it isn't, can't Amnesia exit with a useful error message when it isn't advertised?
I'm assuming this is the issue that's filling up my hpl.log (attached) with lines like this:
ERROR: Couldn't load material 'entities/lamp/torch_static01/torch_static01.mat'
ERROR: Could not create GL texture /opt/AmnesiaDemo/particles/materials/ps_torch_fire.dds
RE: Running Amnesia without S3TC compression? - Urkle - 08-13-2011
S3TC is required for Amnesia to run, you can installed the libtxc_dxtn library which will add support for S3TC into Mesa GL
http://cgit.freedesktop.org/~mareko/libtxc_dxtn/
However since you are running an Intel graphics card there is still not guarantee that Amnesia will run.