Replaces PR #372.

GL_ARB_enhanced_layouts, part 4:  Numerical side of xfb_*: offset computation, size computation, alias detection, paddings, overflow, implicit strides, gl_Max* checks, etc.


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@25014 e7fa87d3-cd2b-0410-9028-fcbf551c1848

GL_ARB_enhanced_layouts, part 3: Semantics for xfb_*: where they can go, inheritance, etc., but not yet the backing arithmetic for offsets and strides.


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@24916 e7fa87d3-cd2b-0410-9028-fcbf551c1848

GL_ARB_enhanced_layouts, part 2:  Full implementation of location/component, plus the parsing for xfb* and align/offset (but not yet full semantics for align/offset).


git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@24692 e7fa87d3-cd2b-0410-9028-fcbf551c1848