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/CDepthBuffer.cpp

@@ -0,0 +1,172 @@
+// Copyright (C) 2002-2012 Nikolaus Gebhardt / Thomas Alten
+// This file is part of the "Irrlicht Engine".
+// For conditions of distribution and use, see copyright notice in irrlicht.h
+
+#include "IrrCompileConfig.h"
+#include "SoftwareDriver2_compile_config.h"
+#include "CDepthBuffer.h"
+
+#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
+
+namespace irr
+{
+namespace video
+{
+
+
+//! constructor
+CDepthBuffer::CDepthBuffer(const core::dimension2d<u32>& size)
+: Buffer(0), Size(0,0)
+{
+	#ifdef _DEBUG
+	setDebugName("CDepthBuffer");
+	#endif
+
+	setSize(size);
+}
+
+
+
+//! destructor
+CDepthBuffer::~CDepthBuffer()
+{
+	delete [] Buffer;
+}
+
+
+
+//! clears the zbuffer
+void CDepthBuffer::clear()
+{
+
+#ifdef SOFTWARE_DRIVER_2_USE_WBUFFER
+	f32 zMax = 0.f;
+#else
+	f32 zMax = 1.f;
+#endif
+
+	u32 zMaxValue;
+	zMaxValue = IR(zMax);
+
+	memset32 ( Buffer, zMaxValue, TotalSize );
+}
+
+
+
+//! sets the new size of the zbuffer
+void CDepthBuffer::setSize(const core::dimension2d<u32>& size)
+{
+	if (size == Size)
+		return;
+
+	Size = size;
+
+	delete [] Buffer;
+
+	Pitch = size.Width * sizeof ( fp24 );
+	TotalSize = Pitch * size.Height;
+	Buffer = new u8[TotalSize];
+	clear ();
+}
+
+
+
+//! returns the size of the zbuffer
+const core::dimension2d<u32>& CDepthBuffer::getSize() const
+{
+	return Size;
+}
+
+// -----------------------------------------------------------------
+
+//! constructor
+CStencilBuffer::CStencilBuffer(const core::dimension2d<u32>& size)
+: Buffer(0), Size(0,0)
+{
+	#ifdef _DEBUG
+	setDebugName("CDepthBuffer");
+	#endif
+
+	setSize(size);
+}
+
+
+
+//! destructor
+CStencilBuffer::~CStencilBuffer()
+{
+	delete [] Buffer;
+}
+
+
+
+//! clears the zbuffer
+void CStencilBuffer::clear()
+{
+	memset32 ( Buffer, 0, TotalSize );
+}
+
+
+
+//! sets the new size of the zbuffer
+void CStencilBuffer::setSize(const core::dimension2d<u32>& size)
+{
+	if (size == Size)
+		return;
+
+	Size = size;
+
+	delete [] Buffer;
+
+	Pitch = size.Width * sizeof ( u32 );
+	TotalSize = Pitch * size.Height;
+	Buffer = new u8[TotalSize];
+	clear ();
+}
+
+
+
+//! returns the size of the zbuffer
+const core::dimension2d<u32>& CStencilBuffer::getSize() const
+{
+	return Size;
+}
+
+
+
+} // end namespace video
+} // end namespace irr
+
+#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
+
+namespace irr
+{
+namespace video
+{
+
+//! creates a ZBuffer
+IDepthBuffer* createDepthBuffer(const core::dimension2d<u32>& size)
+{
+	#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
+	return new CDepthBuffer(size);
+	#else
+	return 0;
+	#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
+}
+
+
+//! creates a ZBuffer
+IStencilBuffer* createStencilBuffer(const core::dimension2d<u32>& size)
+{
+	#ifdef _IRR_COMPILE_WITH_BURNINGSVIDEO_
+	return new CStencilBuffer(size);
+	#else
+	return 0;
+	#endif // _IRR_COMPILE_WITH_BURNINGSVIDEO_
+}
+
+} // end namespace video
+} // end namespace irr
+
+
+