Moved image code from bgfx into bimg library.

3rdparty/pvrtc/PvrTcEncoder.h

@@ -0,0 +1,43 @@
+//============================================================================
+
+#pragma once
+#include "ColorRgba.h"
+#include "AlphaBitmap.h"
+#include "RgbBitmap.h"
+#include "RgbaBitmap.h"
+
+//============================================================================
+
+namespace Javelin
+{
+//============================================================================
+
+	class AlphaBitmap;
+	class RgbBitmap;
+	class RgbaBitmap;
+	
+	class PvrTcEncoder
+	{
+	public:
+		// Result must be large enough for bitmap.GetArea()/4 bytes
+		static void EncodeAlpha2Bpp(void* result, const AlphaBitmap& bitmap);
+		
+		// Result must be large enough for bitmap.GetArea()/2 bytes
+		static void EncodeAlpha4Bpp(void* result, const AlphaBitmap& bitmap);
+		
+		// Result must be large enough for bitmap.GetArea()/2 bytes
+		static void EncodeRgb4Bpp(void* result, const RgbBitmap& bitmap);
+
+		// Result must be large enough for bitmap.GetArea()/2 bytes
+		static void EncodeRgb4Bpp(void* result, const RgbaBitmap& bitmap);
+
+		// Result must be large enough for bitmap.GetArea()/2 bytes
+		static void EncodeRgba4Bpp(void* result, const RgbaBitmap& bitmap);
+
+	private:
+		static unsigned GetMortonNumber(int x, int y);
+	};
+	
+//============================================================================
+}
+//============================================================================