1 files changed, 33 insertions, 0 deletions
diff --git a/include/RenderBackend/OpenGL/CommonShader.hpp b/include/RenderBackend/OpenGL/CommonShader.hpp
new file mode 100644
index 0000000..a67aa68
--- /dev/null
+++ b/include/RenderBackend/OpenGL/CommonShader.hpp
@@ -0,0 +1,33 @@
+#pragma once
+
+namespace amalgine
+{
+    static bool isAlpha(char c)
+    {
+        return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');
+    }
+    
+    static bool isDigit(char c)
+    {
+        return c >= '0' && c <= '9';
+    }
+    
+    static bool isShaderVariableNameValid(const char *variableName)
+    {
+        const char *p = &variableName[0];
+        if(isAlpha(*p) || *p == '_')
+        {
+            ++p;
+            while(true)
+            {
+                char c = *p;
+                if(c == '\0')
+                    return true;
+                else if(isAlpha(c) || isDigit(c) || c == '_')
+                    ++p;
+            }
+        }
+        
+        return false;
+    }
+}