glsl: add preprocessor support for #pragma

Two forms are supported:

Pragmas are silently ignored at this time.

2 files changed, 31 insertions, 0 deletions

diff --git a/src/mesa/shader/slang/library/slang_pp_directives.syn b/src/mesa/shader/slang/library/slang_pp_directives.syn
index d4a321034d..b51d168cc0 100644
--- a/src/mesa/shader/slang/library/slang_pp_directives.syn
+++ b/src/mesa/shader/slang/library/slang_pp_directives.syn
@@ -79,6 +79,12 @@
 .emtcode BEHAVIOR_WARN    3
 .emtcode BEHAVIOR_DISABLE 4
 
+/*
+ * The PRAGMA_* symbols follow TOKEN_PRAGMA
+ */
+.emtcode PRAGMA_NO_PARAM 0
+.emtcode PRAGMA_PARAM    1
+
 source
    optional_directive .and .loop source_element .and '\0' .emit ESCAPE_TOKEN .emit TOKEN_END;
 
@@ -153,6 +159,7 @@ directive
    dir_elif .emit TOKEN_ELIF .or
    dir_endif .emit TOKEN_ENDIF .or
    dir_ext .emit TOKEN_EXTENSION .or
+   dir_pragma .emit TOKEN_PRAGMA .or
    dir_line .emit TOKEN_LINE;
 
 dir_define
@@ -187,6 +194,19 @@ dir_ext
 dir_line
    optional_space .and '#' .and optional_space .and "line" .and expression;
 
+dir_pragma
+   optional_space .and '#' .and optional_space .and "pragma" .and symbol .and opt_pragma_param;
+
+
+opt_pragma_param
+   pragma_param .or .true .emit PRAGMA_NO_PARAM;
+
+pragma_param
+   optional_space .and '(' .emit PRAGMA_PARAM .and optional_space .and symbol_no_space .and optional_space .and ')';
+
+symbol_no_space
+   symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\0';
+
 symbol
    space .and symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\0';
 
diff --git a/src/mesa/shader/slang/library/slang_pp_directives_syn.h b/src/mesa/shader/slang/library/slang_pp_directives_syn.h
index 35e7bc2761..430f8d8217 100644
--- a/src/mesa/shader/slang/library/slang_pp_directives_syn.h
+++ b/src/mesa/shader/slang/library/slang_pp_directives_syn.h
@@ -20,6 +20,8 @@
 ".emtcode BEHAVIOR_ENABLE 2\n"
 ".emtcode BEHAVIOR_WARN 3\n"
 ".emtcode BEHAVIOR_DISABLE 4\n"
+".emtcode PRAGMA_NO_PARAM 0\n"
+".emtcode PRAGMA_PARAM 1\n"
 "source\n"
 " optional_directive .and .loop source_element .and '\\0' .emit ESCAPE_TOKEN .emit TOKEN_END;\n"
 "source_element\n"
@@ -76,6 +78,7 @@
 " dir_elif .emit TOKEN_ELIF .or\n"
 " dir_endif .emit TOKEN_ENDIF .or\n"
 " dir_ext .emit TOKEN_EXTENSION .or\n"
+" dir_pragma .emit TOKEN_PRAGMA .or\n"
 " dir_line .emit TOKEN_LINE;\n"
 "dir_define\n"
 " optional_space .and '#' .and optional_space .and \"define\" .and symbol .and opt_parameters .and\n"
@@ -99,6 +102,14 @@
 " optional_space .and ':' .and optional_space .and extension_behavior;\n"
 "dir_line\n"
 " optional_space .and '#' .and optional_space .and \"line\" .and expression;\n"
+"dir_pragma\n"
+" optional_space .and '#' .and optional_space .and \"pragma\" .and symbol .and opt_pragma_param;\n"
+"opt_pragma_param\n"
+" pragma_param .or .true .emit PRAGMA_NO_PARAM;\n"
+"pragma_param\n"
+" optional_space .and '(' .emit PRAGMA_PARAM .and optional_space .and symbol_no_space .and optional_space .and ')';\n"
+"symbol_no_space\n"
+" symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\\0';\n"
 "symbol\n"
 " space .and symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\\0';\n"
 "opt_parameters\n"