75 lines
2.3 KiB
C++
75 lines
2.3 KiB
C++
// Filename: samplerContext.h
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// Created by: rdb (11Dec14)
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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) Carnegie Mellon University. All rights reserved.
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//
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// All use of this software is subject to the terms of the revised BSD
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// license. You should have received a copy of this license along
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// with this source code in a file named "LICENSE."
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//
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////////////////////////////////////////////////////////////////////
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#ifndef SAMPLERCONTEXT_H
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#define SAMPLERCONTEXT_H
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#include "pandabase.h"
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#include "adaptiveLru.h"
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#include "simpleLru.h"
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#include "samplerState.h"
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#include "savedContext.h"
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////////////////////////////////////////////////////////////////////
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// Class : SamplerContext
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// Description : This is a special class object that holds a handle
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// to the sampler state object given by the graphics
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// back-end for a particular combination of texture
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// sampling settings.
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//
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// Some graphics back-ends (like OpenGL) use mutable
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// sampler objects, whereas others (Direct3D 10+) use
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// immutable ones. In Panda3D, each unique sampler
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// state has its own SamplerContext, which simplifies
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// the implementation and makes redundant sampler
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// objects impossible.
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////////////////////////////////////////////////////////////////////
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class EXPCL_PANDA_GOBJ SamplerContext : public SavedContext, public SimpleLruPage {
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public:
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INLINE SamplerContext(const SamplerState &sampler);
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virtual void output(ostream &out) const;
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virtual void write(ostream &out, int indent_level) const;
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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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SavedContext::init_type();
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register_type(_type_handle, "SamplerContext",
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SavedContext::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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friend class PreparedGraphicsObjects;
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};
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inline ostream &operator << (ostream &out, const SamplerContext &context) {
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context.output(out);
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return out;
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}
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#include "samplerContext.I"
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#endif
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