added CPU uniform location lookup optimization

src/render/Shader.cpp

@@ -0,0 +1,13 @@
+#include "Shader.hpp"
+
+GLint CShader::getUniformLocation(const std::string& unif) {
+    const auto itpos = m_muUniforms.find(unif);
+
+    if (itpos == m_muUniforms.end()) {
+        const auto unifLoc = glGetUniformLocation(program, unif.c_str());
+        m_muUniforms[unif] = unifLoc;
+        return unifLoc;
+    }
+
+    return itpos->second;
+}