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mesa/src/compiler/glsl/glcpp
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Eric Engestrom f1eae2f8bb python: drop python2 support 
Signed-off-by: Eric Engestrom <eric@engestrom.ch>
Acked-by: Jose Fonseca <jfonseca@vmware.com>
Reviewed-by: Alyssa Rosenzweig <alyssa@collabora.com>
Reviewed-by: Dylan Baker <dylan@pnwbakers.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/3674>
2021-08-14 21:44:32 +00:00
..
tests python: drop python2 support 2021-08-14 21:44:32 +00:00
glcpp-lex.l glsl: add preprocessor #include support 2019-11-20 05:05:55 +00:00
glcpp-parse.y glsl: add extra pp tokens workaround and enable for CoR 2020-10-29 23:35:58 +00:00
glcpp.c glcpp: Fully initialize struct gl_context 2021-03-19 08:50:37 +00:00
glcpp.h glsl: add preprocessor #include support 2019-11-20 05:05:55 +00:00
meson.build meson/glsl: Only run GLSL tests if can_run_host_binaries() 2021-08-11 23:57:52 +00:00
pp.c glcpp: Fix undefined behaviour in glcpp 2021-03-25 00:23:43 +00:00
pp_standalone_scaffolding.c mesa: add support cursor support for relative path shader includes 2019-11-20 05:05:56 +00:00
pp_standalone_scaffolding.h mesa: add support cursor support for relative path shader includes 2019-11-20 05:05:56 +00:00
README

README 

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).