XShaderCompiler 0.09 Alpha

Pre-release for testing purposes. Do not use for production!

News:

• Type conversion for specific semantics (e.g. uint SV_VertexID vs int gl_VertexID).
• Translation of entry-point return statements with type cast.
• Improvements for HLSL3 input shader version.
• Added Cg and HLSL6 as input shader versions.
• Refactored translation of structure inheritance.
• Refactored pre-processor.
• Lots of bug fixes found with unit tests from hlsl2glslfork project.
• Enhanced translation of Texture object intrinsics.
• Support for shadow samplers.
• Refactored shell commands.
• Fixed matrix storage layout.