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mesa/src/compiler/glsl/glcpp
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Iago Toral Quiroga ce53e8e61b Fix glcpp test expectations 
With commit f7741985be we have changed some preprocessor
error messages and warnings. Adapt related glcpp tests
expectations accordingly.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101336
Tested-by: Vinson Lee <vlee@freedesktop.org>
Reviewed-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
2017-06-08 09:46:36 +02:00
..
tests Fix glcpp test expectations 2017-06-08 09:46:36 +02:00
.gitignore glsl: move to compiler/ 2016-01-26 16:08:33 +00:00
glcpp-lex.l glcpp: Allow vertical tab and form feed characters in GLSL 2017-01-04 14:40:48 -08:00
glcpp-parse.y glcpp: fix #undef to match latest spec update and GLSLang implementation 2017-06-07 07:50:46 +02:00
glcpp.c glsl: reuse main extension table to appropriately restrict extensions 2016-07-23 13:48:04 -04:00
glcpp.h glsl: Add "built-in" functions to do 64x64 => 64 multiplication 2017-01-20 15:41:23 -08:00
pp.c glcpp: Skip unnecessary line continuations removal 2017-05-22 12:34:28 +10:00
README glsl: move to compiler/ 2016-01-26 16:08:33 +00:00

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).