Added love.graphics.getStats. It returns a table with performance-related graphics statistics. Currently it contains these fields:

drawcalls: The number of internal draw calls made so far in the current frame.

canvasswitches: The number of times the active Canvas has been changed so far in the current frame.

texturememory: The approximate amount of video memory (in bytes) used by OpenGL textures created by Images, Canvases, and Fonts.

images: The number of active Image objects.

canvases: The number of active Canvas objects.

fonts: The number of active Font objects.

src/modules/graphics/opengl/Image.h

@@ -148,6 +148,8 @@ public:
 	static bool getConstant(const char *in, Format &out);
 	static bool getConstant(Format in, const char *&out);
 
+	static int imageCount;
+
 private:
 
 	void uploadDefaultTexture();
@@ -184,6 +186,8 @@ private:
 	// back to a default texture.
 	bool usingDefaultTexture;
 
+	size_t textureMemorySize;
+
 	void preload();
 
 	void uploadTexturePadded();