yeah GLSL and CG support are in the works for upcoming versions :)
On their forum the author suggested trying the open source HLSL to GLSL tool avaliable here:
http://sourceforge.net/projects/hlsl2glsl
Thanks for reminding me about this, as I totaly forgot.
Info
HLSL2GLSL is a command-line tool and library that translates HLSL shaders into GLSL. HLSL2GLSL can be used as a stand-alone command-line tool to directly translate shader source from HLSL to GLSL. In addition, HLSL2GLSL is a DLL (with full source-code included) that can be used directly by a developer in an application. The library is designed to work with HLSL shaders up to Shader Model 3.0. The tool generates either GLSL v1.10.59 desktop OpenGL shaders or ES SL v1.00 embedded OpenGL ES shaders.
On their forum the author suggested trying the open source HLSL to GLSL tool avaliable here:
http://sourceforge.net/projects/hlsl2glsl
Thanks for reminding me about this, as I totaly forgot.
Info
HLSL2GLSL is a command-line tool and library that translates HLSL shaders into GLSL. HLSL2GLSL can be used as a stand-alone command-line tool to directly translate shader source from HLSL to GLSL. In addition, HLSL2GLSL is a DLL (with full source-code included) that can be used directly by a developer in an application. The library is designed to work with HLSL shaders up to Shader Model 3.0. The tool generates either GLSL v1.10.59 desktop OpenGL shaders or ES SL v1.00 embedded OpenGL ES shaders.