Added support for ETC1 and PVR1 compressed textures contained in KTX, PKM, and PVR files.

Most desktop graphics drivers don't support those formats.

--HG--
branch : minor

src/modules/image/magpie/Image.h

@@ -24,6 +24,7 @@
 // LOVE
 #include "image/Image.h"
 #include "FormatHandler.h"
+#include "CompressedFormatHandler.h"
 
 // C++
 #include <list>
@@ -63,6 +64,9 @@ private:
 	// Image format handlers we can use for decoding and encoding ImageData.
 	std::list<FormatHandler *> formatHandlers;
 
+	// Compressed image format handers we can use for parsing CompressedData.
+	std::list<CompressedFormatHandler *> compressedFormatHandlers;
+
 }; // Image
 
 } // magpie