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/CZBuffer.cpp

@@ -0,0 +1,109 @@
+// 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
+
+#include "IrrCompileConfig.h"
+#include "CZBuffer.h"
+#include "irrString.h"
+
+#ifdef _IRR_COMPILE_WITH_SOFTWARE_
+
+namespace irr
+{
+namespace video
+{
+
+
+//! constructor
+CZBuffer::CZBuffer(const core::dimension2d<u32>& size)
+: Buffer(0), BufferEnd(0), Size(0,0), TotalSize(0)
+{
+	#ifdef _DEBUG
+	setDebugName("CZBuffer");
+	#endif
+
+	setSize(size);
+}
+
+
+
+//! destructor
+CZBuffer::~CZBuffer()
+{
+	delete [] Buffer;
+}
+
+
+
+//! clears the zbuffer
+void CZBuffer::clear()
+{
+	memset(Buffer, 0, (BufferEnd-Buffer)*sizeof(TZBufferType));
+}
+
+
+
+//! sets the new size of the zbuffer
+void CZBuffer::setSize(const core::dimension2d<u32>& size)
+{
+	if (size == Size)
+		return;
+
+	Size = size;
+
+	delete [] Buffer;
+
+	TotalSize = size.Width * size.Height;
+	Buffer = new TZBufferType[TotalSize];
+	BufferEnd = Buffer + TotalSize;
+}
+
+
+
+//! returns the size of the zbuffer
+const core::dimension2d<u32>& CZBuffer::getSize() const
+{
+	return Size;
+}
+
+
+
+//! locks the zbuffer
+TZBufferType* CZBuffer::lock()
+{
+	return Buffer;
+}
+
+
+
+//! unlocks the zbuffer
+void CZBuffer::unlock()
+{
+}
+
+} // end namespace video
+} // end namespace irr
+
+#endif // _IRR_COMPILE_WITH_SOFTWARE_
+
+namespace irr
+{
+namespace video
+{
+
+//! creates a ZBuffer
+IZBuffer* createZBuffer(const core::dimension2d<u32>& size)
+{
+	#ifdef _IRR_COMPILE_WITH_SOFTWARE_
+	return new CZBuffer(size);
+	#else
+	return 0;
+	#endif // _IRR_COMPILE_WITH_SOFTWARE_
+}
+
+
+} // end namespace video
+} // end namespace irr
+
+
+