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114 lines
4.6 KiB
114 lines
4.6 KiB
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GLS reference implementation (GLSREF) release notes
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Craig Dunwoody
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[email protected]
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GLSREF is a reference implementation of the GLS API. It is NOT a
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sample implementation or a product-quality implementation, and it is
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therefore NOT suitable for shipping unmodified to customers as a
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product.
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The full GLS API specification document is not yet available. The
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primary reason for releasing GLSREF at this time is to allow vendors
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to begin the development of product-quality implementations of the GLS
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API.
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For more details on how to use GLSREF as the starting point in the
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development of a product-quality implementation of the GLS API, see
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the file doc/porting.txt.
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GLSREF has been built and minimally tested on the following platforms:
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OS ISA/ABI Build environment
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AIX 3.2.5 IBM-POWER AIX XL C Compiler/6000 3.2.5
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Digital Unix 3.0 ALPHA Digital Unix C 3.0
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HP-UX 9.05 PA-RISC HP-UX C 9.0.5
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IRIX 5.3 MIPS-1 IDO 5.3
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IRIX 5.3 MIPS-1 gcc 2.6.3, IDO 5.3
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IRIX 6.2 MIPS-3/32 IDO 6.2
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IRIX 6.2 MIPS-3/64 IDO 6.2
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Linux 1.1.95 X86 binutils 2.5.21.17,
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gcc 2.7.0,
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ld.so 1.7.3,
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libc 5.0.9
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Solaris 2.4 SPARC SPARCompiler C 3.0.1
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Windows NT 3.5 ALPHA SDK 3.5
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Windows NT 3.5 MIPS-1 Visual C++ 2.0, SDK 3.5
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Windows NT 3.5 X86 Visual C++ 2.0, SDK 3.5
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If you need to bring up GLSREF on a platform that is not one of those
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listed, see the file doc/porting.txt.
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After building and installing the GLS library, commands, and tests,
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perform a sanity check by running the following commands:
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cmd/glscat data/1.gls
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test/tcallarr data/1.gls
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test/tcapture
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test/tparser
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You should put GLSREF under source code control so you can easily
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track your changes and integrate them with future GLSREF releases from
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SGI.
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File type recognition
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-------------------------------------------------------------------------------
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On Unix-type platforms, append one of the following two files to /etc/magic:
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filetype/magic.lsb (little-endian systems)
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filetype/magic.msb (big-endian systems)
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Known problems
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-------------------------------------------------------------------------------
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- The documentation of the GLS API and encodings is quite inadequate. SGI is
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developing a specification document for the GLS API and encodings, and
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will release this document as soon as possible.
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- There is not yet any documentation on how to extend GLS to support
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vendor-specific GL extensions. If you need to do this, contact SGI
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to allocate a block of GLS opcodes in the GLS opcode registry that
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SGI maintains.
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- Mutual exclusion and thread local storage are not supported by GLSREF
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on the following platforms:
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AIX 3.2.5
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HP-UX 9.05
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IRIX 5.3, 6.2 (GLSREF only; SGI product implementation has full support)
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Linux 1.1.95
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This is due to a lack of adequate support for threads on these platforms.
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- On the AIX 3.2.5 and HP-UX 9.05 platforms, 64-bit integers (types GLlong
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and GLulong) in a GLS_TEXT stream can be parsed only if they appear in
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the hexadecimal form 0xdddddddddddddddd. This is due to a lack of
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adequate 64-bit integer support on these platforms, and could be
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remedied by enhancing the 64-bit integer parsing code in GLSREF.
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- On the AIX 3.2.5 and HP-UX 9.05 platforms, 64-bit integers (types GLlong
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and GLulong) in a generated GLS_TEXT stream are always formatted in
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the hexadecimal form 0xdddddddddddddddd, even in cases where the GLS
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spec requires decimal formatting. This is due to a lack of adequate
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64-bit integer support on these platforms, and could be remedied by
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enhancing the 64-bit integer formatting code in GLSREF.
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-------------------------------------------------------------------------------
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End
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-------------------------------------------------------------------------------
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