Moved the post processing shader to KRShaderManager / KRShader

Changed many vertex buffers to VBO's

--HG--
extra : convert_revision : svn%3A7752d6cf-9f14-4ad2-affc-04f1e67b81a5/trunk%40100

KREngine/KREngine/Classes/KRModel.cpp

@@ -78,6 +78,8 @@ void KRModel::render(KRCamera *pCamera, KRContext *pContext, KRMat4 &matModelToV
                 m_materials.push_back(pMaterial);
                 if(pMaterial) {
                     m_uniqueMaterials.insert(pMaterial);
+                } else {
+                    fprintf(stderr, "Missing material: %s\n", szMaterialName);
                 }
             }