Merging r5975 through r6036 from trunk to ogl-es branch.

GLES drivers adapted, but only did make compile-tests.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6038 dfc29bdd-3216-0410-991c-e03cc46cb475

source/Irrlicht/CImageLoaderPNG.h

@@ -0,0 +1,45 @@
+// Copyright (C) 2002-2012 Nikolaus Gebhardt
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+// this file was created by rt (www.tomkorp.com), based on ttk's png-reader
+// i wanted to be able to read in PNG images with irrlicht :)
+// why?  lossless compression with 8-bit alpha channel!
+
+#ifndef __C_IMAGE_LOADER_PNG_H_INCLUDED__
+#define __C_IMAGE_LOADER_PNG_H_INCLUDED__
+
+#include "IrrCompileConfig.h"
+
+#ifdef _IRR_COMPILE_WITH_PNG_LOADER_
+
+#include "IImageLoader.h"
+
+namespace irr
+{
+namespace video
+{
+
+//!  Surface Loader for PNG files
+class CImageLoaderPng : public IImageLoader
+{
+public:
+
+	//! returns true if the file maybe is able to be loaded by this class
+	//! based on the file extension (e.g. ".png")
+	virtual bool isALoadableFileExtension(const io::path& filename) const _IRR_OVERRIDE_;
+
+	//! returns true if the file maybe is able to be loaded by this class
+	virtual bool isALoadableFileFormat(io::IReadFile* file) const _IRR_OVERRIDE_;
+
+	//! creates a surface from the file
+	virtual IImage* loadImage(io::IReadFile* file) const _IRR_OVERRIDE_;
+};
+
+
+} // end namespace video
+} // end namespace irr
+
+#endif
+#endif
+