81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
// Filename: savedFrameBuffer.h
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// Created by: drose (06Oct99)
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//
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////////////////////////////////////////////////////////////////////
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//
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// PANDA 3D SOFTWARE
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// Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved
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//
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// All use of this software is subject to the terms of the Panda 3d
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// Software license. You should have received a copy of this license
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// along with this source code; you will also find a current copy of
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// the license at http://www.panda3d.org/license.txt .
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//
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// To contact the maintainers of this program write to
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// panda3d@yahoogroups.com .
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//
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////////////////////////////////////////////////////////////////////
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#ifndef SAVEDFRAMEBUFFER_H
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#define SAVEDFRAMEBUFFER_H
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#include <pandabase.h>
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#include "renderBuffer.h"
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#include "displayRegion.h"
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#include <typedReferenceCount.h>
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#include <pointerTo.h>
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////////////////////////////////////////////////////////////////////
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// Class : SavedFrameBuffer
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// Description : Occasionally we need to save the contents of the
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// frame buffer for restoring later, particularly when
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// we are doing multipass effects. The precise form in
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// which the frame buffer is optimally saved may vary
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// from one platform to another; hence, we have the
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// SavedFrameBuffer class, which is a placeholder
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// structure to store the frame buffer in whichever way
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// a particular GSG would prefer to do it.
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//
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// Each specific GSG will also derive a new kind of
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// SavedFrameBuffer object that it will use to store its
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// frame buffer contents meaningfully.
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//
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// This class is not meant to be used directly; it is
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// used within the FrameBufferStack class to support
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// GraphicsStateGuardian::push_frame_buffer() and
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// pop_frame_buffer().
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA SavedFrameBuffer : public TypedReferenceCount {
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public:
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INLINE SavedFrameBuffer(const RenderBuffer &buffer,
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CPT(DisplayRegion) dr);
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RenderBuffer _buffer;
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CPT(DisplayRegion) _display_region;
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public:
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static TypeHandle get_class_type() {
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return _type_handle;
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}
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static void init_type() {
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TypedReferenceCount::init_type();
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register_type(_type_handle, "SavedFrameBuffer",
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TypedReferenceCount::get_class_type());
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}
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virtual TypeHandle get_type() const {
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return get_class_type();
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}
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virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
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private:
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static TypeHandle _type_handle;
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};
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#include "savedFrameBuffer.I"
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#endif
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