Added support for Frame Buffers, FBO and PBuffer (win and linux ftm), better known as render to texture.

Added loading from memory of texture groups.
Fixed minor things.

src/graphics/cframebuffer.cpp

@@ -0,0 +1,61 @@
+#include "cframebuffer.hpp"
+#include "ctexturefactory.hpp"
+#include "../window/cengine.hpp"
+#include "cframebufferfbo.hpp"
+#include "cframebufferpbuffer.hpp"
+
+namespace EE { namespace Graphics {
+
+cFrameBuffer * cFrameBuffer::CreateNew( const Uint32& Width, const Uint32& Height, bool DepthBuffer ) {
+	if ( cFrameBufferFBO::IsSupported() )
+		return new cFrameBufferFBO( Width, Height, DepthBuffer );
+
+	if ( cFrameBufferPBuffer::IsSupported() )
+		return new cFrameBufferPBuffer( Width, Height, DepthBuffer );
+
+	return NULL;
+}
+
+cFrameBuffer::cFrameBuffer() :
+	mWidth(0),
+	mHeight(0),
+	mTexture(NULL),
+	mClearColor(0,0,0,0)
+{}
+
+cFrameBuffer::~cFrameBuffer() {
+	if ( NULL != mTexture )
+		cTextureFactory::instance()->Remove( mTexture->TexId() );
+}
+
+cTexture * cFrameBuffer::GetTexture() const {
+	return mTexture;
+}
+
+void cFrameBuffer::ClearColor( eeColorAf Color ) {
+	mClearColor = Color;
+}
+
+eeColorAf cFrameBuffer::ClearColor() const {
+	return mClearColor;
+}
+
+void cFrameBuffer::SetBufferView() {
+	glClearColor( mClearColor.R(), mClearColor.G(), mClearColor.B(), mClearColor.A() );
+	glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
+
+	mPrevView = Window::cEngine::instance()->GetView();
+
+	glMatrixMode( GL_PROJECTION );
+	glLoadIdentity();
+	glViewport( 0, 0, mWidth, mHeight );
+	glOrtho( 0.0f, mWidth, 0.f, mHeight, -1000.0f, 1000.0f );
+	glMatrixMode( GL_MODELVIEW );
+	glLoadIdentity();
+}
+
+void cFrameBuffer::RecoverView() {
+	cEngine::instance()->SetView( mPrevView );
+}
+
+}}