mesa/src/glsl/glcpp
Erik Faye-Lund c61bc6ed84 util: port _mesa_strto[df] to C
_mesa_strtod and _mesa_strtof are only used from the GLSL compiler and
the ARB_[vertex|fragment]_program code, meaning that the locale doesn't
need to be initialized before the first OpenGL context gets initialized.

So let's use explicit initialization from the one-time init code instead
of depending on a C++ compiler to initialize at image-load time.

Signed-off-by: Erik Faye-Lund <kusmabite@gmail.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Reviewed-by: Brian Paul <brianp@vmware.com>
2015-06-29 09:06:40 -07:00
..
tests glcpp: Make tests write .out files to builddir. 2014-12-12 12:11:50 -08:00
.gitignore glcpp: Add back tests/*.out to .gitignore 2013-01-11 11:49:33 +01:00
glcpp-lex.l glcpp: Don't use alternation in the lookahead for empty pragmas. 2014-08-22 15:14:59 -07:00
glcpp-parse.y glsl: add ARB_vertex_attrib_64bit support. (v2) 2015-05-08 10:21:01 +10:00
glcpp.c util: port _mesa_strto[df] to C 2015-06-29 09:06:40 -07:00
glcpp.h util: Move ralloc to a new src/util directory. 2014-08-04 11:06:58 -07:00
pp.c glcpp: remove unneeded #include of core.h 2015-02-24 17:10:28 -07:00
README glcpp: Update README for new support of __LINE__ and __FILE__. 2012-11-29 13:03:02 -08:00

glcpp -- GLSL "C" preprocessor

This is a simple preprocessor designed to provide the preprocessing
needs of the GLSL language. The requirements for this preprocessor are
specified in the GLSL 1.30 specification availble from:

http://www.opengl.org/registry/doc/GLSLangSpec.Full.1.30.10.pdf

This specification is not precise on some semantics, (for example,
#define and #if), defining these merely "as is standard for C++
preprocessors". To fill in these details, I've been using a draft of
the C99 standard as available from:

http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1256.pdf

Any downstream compiler accepting output from glcpp should be prepared
to encounter and deal with the following preprocessor macros:

	#line
	#pragma
	#extension

All other macros will be handled according to the GLSL specification
and will not appear in the output.

Known limitations
-----------------
A file that ends with a function-like macro name as the last
non-whitespace token will result in a parse error, (where it should be
passed through as is).