cube to equirect conversion using shader, save latlong to file

engine/rtt.h

@@ -16,6 +16,7 @@ public:
 
     void destroy();
     bool create(int width, int height, int tex = -1);
+    bool recreate() { return create(w, h); }
     void clear(glm::vec4 color = glm::vec4(0));
     void readTextureData(uint8_t* buffer);
     uint8_t* createBuffer();