Add an offline syntax checker for shaders

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@12815 178a84e3-b1eb-0310-8ba1-8eac791a3b58

data/shaders/check.sh

@@ -0,0 +1,25 @@
+#!/bin/sh
+#
+#	Run a syntax check on all the shaders.
+#
+#	The utility glslopt may be gotten from github.com/clbr/glsl-optimizer.
+
+out() {
+	rm -f *.out
+	echo Failed: $1
+	exit 1
+}
+
+
+for vert in *.vert; do
+	glslopt -v $vert
+	[ $? -ne 0 ] && out $vert
+done
+
+for frag in *.frag; do
+	glslopt -f $frag
+	[ $? -ne 0 ] && out $frag
+done
+
+
+rm -f *.out