Added error output to the preprocessor.

This patch distinguishes preprocessing errors with normal parsing
errors and gives glslangValidator the ability to output preprocessing
errors.

Test/baseResults/preprocessor.edge_cases.vert.err

@@ -0,0 +1,2 @@
+Warning, version 310 is not yet complete; most version-specific features are present, but some are missing.
+

Test/baseResults/preprocessor.errors.vert.err

@@ -0,0 +1,8 @@
+Warning, version 310 is not yet complete; most version-specific features are present, but some are missing.
+ERROR: 0:9: '#error' : This should show up in pp output .
+ERROR: 0:14: '#' : invalid directive: def
+ERROR: 0:15: 'preprocessor evaluation' : undefined macro in expression not allowed in es profile Y
+ERROR: 0:21: '' : missing #endif
+ERROR: 4 compilation errors. No code generated.
+
+

Test/baseResults/preprocessor.errors.vert.out

@@ -1,16 +0,0 @@
-#version 310 es
-
-
-
-
-
-
-
-#error This should show up in pp output . 
-
-
-
-
-int main(){
-}
-

Test/baseResults/preprocessor.extensions.vert.err

@@ -0,0 +1,4 @@
+Warning, version 310 is not yet complete; most version-specific features are present, but some are missing.
+WARNING: 0:5: '#extension' : extension is only partially supported: GL_EXT_gpu_shader5
+WARNING: 0:6: '#extension' : extension not supported: GL_EXT_shader_texture_image_samples
+

Test/baseResults/preprocessor.function_macro.vert.err

@@ -0,0 +1,2 @@
+Warning, version 310 is not yet complete; most version-specific features are present, but some are missing.
+

Test/baseResults/preprocessor.pragma.vert.err

@@ -0,0 +1,2 @@
+Warning, version 310 is not yet complete; most version-specific features are present, but some are missing.
+

Test/baseResults/preprocessor.simple.vert.err

@@ -0,0 +1,2 @@
+Warning, version 310 is not yet complete; most version-specific features are present, but some are missing.
+

Test/baseResults/preprocessor.success_if_parse_would_fail.vert.out

@@ -0,0 +1,4 @@
+int x(){
+  something that shouldnt compile;
+}
+

Test/preprocessor.errors.vert

@@ -1,9 +1,9 @@
 #version 310 es
 
-#define X
+#define X 1
 
 #if X
-  #if Y
+  #ifdef Y
     #error This should not show up in pp output.
   #endif
     #error This should show up in pp output.
@@ -11,5 +11,10 @@
   #error This should not show up in pp output.
 #endif
 
+#def X
+#if Y
+
+#extension a
+
 int main() {
 }

Test/preprocessor.success_if_parse_would_fail.vert

@@ -0,0 +1,4 @@
+int x() {
+  something that shouldnt compile;
+}
+

Test/runtests

@@ -61,8 +61,9 @@ rm -f comp.spv frag.spv geom.spv tesc.spv tese.spv vert.spv
 while read t; do
     echo Running Preprocessor $t...
     b=`basename $t`
-    $EXE -E $t > $TARGETDIR/$b.out
+    $EXE -E $t > $TARGETDIR/$b.out 2> $TARGETDIR/$b.err
     diff -b $BASEDIR/$b.out $TARGETDIR/$b.out || HASERROR=1
+    diff -b $BASEDIR/$b.err $TARGETDIR/$b.err || HASERROR=1
 done < test-preprocessor-list
 
 #

Test/test-preprocessor-list

@@ -5,3 +5,4 @@ preprocessor.function_macro.vert
 preprocessor.line.vert
 preprocessor.pragma.vert
 preprocessor.simple.vert
+preprocessor.success_if_parse_would_fail.vert