1glcpp -- GLSL "C" preprocessor 2 3This is a simple preprocessor designed to provide the preprocessing 4needs of the GLSL language. The requirements for this preprocessor are 5specified in the GLSL 1.30 specification availble from: 6 7http://www.opengl.org/registry/doc/GLSLangSpec.Full.1.30.10.pdf 8 9This specification is not precise on some semantics, (for example, 10#define and #if), defining these merely "as is standard for C++ 11preprocessors". To fill in these details, I've been using a draft of 12the C99 standard as available from: 13 14http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf 15 16Any downstream compiler accepting output from glcpp should be prepared 17to encounter and deal with the following preprocessor macros: 18 19 #line 20 #pragma 21 #extension 22 23All other macros will be handled according to the GLSL specification 24and will not appear in the output. 25 26Known limitations 27----------------- 28A file that ends with a function-like macro name as the last 29non-whitespace token will result in a parse error, (where it should be 30passed through as is).