Add API to load texture file.

examples/SharedMemory/TinyRendererVisualShapeConverter.h

@@ -38,6 +38,7 @@ struct TinyRendererVisualShapeConverter : public LinkVisualShapesConverter
 	void render();
 	void render(const float viewMat[16], const float projMat[16]);
     
+    void loadTextureFile(const char* filename);
     int registerTexture(unsigned char* texels, int width, int height);
     void activateShapeTexture(int shapeUniqueId, int textureUniqueId);
     void activateShapeTexture(int objectUniqueId, int jointIndex, int shapeIndex, int textureUniqueId);