glsl: Update the #line behaviour on GLSL 3.30+ and GLSL ES+

[mesa.git] / src / glsl / glsl_lexer.ll

diff --git a/src/glsl/glsl_lexer.ll b/src/glsl/glsl_lexer.ll
index f0e047ebd704aabe684141a2126d730cceb9c7d9..2785ed16884dd457f4048054bcf7654ae34e6991 100644 (file)
--- a/src/glsl/glsl_lexer.ll
+++ b/src/glsl/glsl_lexer.ll
@@ -187,6 +187,15 @@ HASH               ^{SPC}#{SPC}
                                    * one-based.
                                    */
                                   yylineno = strtol(ptr, &ptr, 0) - 1;
+
+                                   /* From GLSL 3.30 and GLSL ES on, after processing the
+                                    * line directive (including its new-line), the implementation
+                                    * will behave as if it is compiling at the line number passed
+                                    * as argument. It was line number + 1 in older specifications.
+                                    */
+                                   if (yyextra->is_version(330, 100))
+                                      yylineno--;
+
                                   yylloc->source = strtol(ptr, NULL, 0);
                                }
 {HASH}line{SPCP}{INT}{SPC}$    {
@@ -202,6 +211,14 @@ HASH               ^{SPC}#{SPC}
                                    * one-based.
                                    */
                                   yylineno = strtol(ptr, &ptr, 0) - 1;
+
+                                   /* From GLSL 3.30 and GLSL ES on, after processing the
+                                    * line directive (including its new-line), the implementation
+                                    * will behave as if it is compiling at the line number passed
+                                    * as argument. It was line number + 1 in older specifications.
+                                    */
+                                   if (yyextra->is_version(330, 100))
+                                      yylineno--;
                                }
 ^{SPC}#{SPC}pragma{SPCP}debug{SPC}\({SPC}on{SPC}\) {
                                  BEGIN PP;