83 lines
2.3 KiB
C
83 lines
2.3 KiB
C
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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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* @file indexBufferContext.h
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* @author drose
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* @date 2005-03-17
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*/
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#ifndef INDEXBUFFERCONTEXT_H
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#define INDEXBUFFERCONTEXT_H
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#include "pandabase.h"
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#include "bufferContext.h"
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#include "geomPrimitive.h"
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#include "preparedGraphicsObjects.h"
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#include "adaptiveLru.h"
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/**
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* This is a special class object that holds all the information returned by a
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* particular GSG to indicate the vertex data array's internal context
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* identifier.
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*
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* This allows the GSG to cache the vertex data array in whatever way makes
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* sense. For instance, DirectX can allocate a vertex buffer for the array.
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* OpenGL can create a buffer object.
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*/
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class EXPCL_PANDA_GOBJ IndexBufferContext : public BufferContext, public AdaptiveLruPage {
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public:
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INLINE IndexBufferContext(PreparedGraphicsObjects *pgo, GeomPrimitive *data);
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PUBLISHED:
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INLINE GeomPrimitive *get_data() const;
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INLINE bool changed_size(const GeomPrimitivePipelineReader *reader) const;
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INLINE bool changed_usage_hint(const GeomPrimitivePipelineReader *reader) const;
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INLINE bool was_modified(const GeomPrimitivePipelineReader *reader) const;
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public:
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INLINE void update_data_size_bytes(size_t new_data_size_bytes);
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INLINE void mark_loaded(const GeomPrimitivePipelineReader *reader);
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INLINE void mark_unloaded();
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virtual void output(std::ostream &out) const;
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virtual void write(std::ostream &out, int indent_level) const;
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private:
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GeomEnums::UsageHint _usage_hint;
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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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BufferContext::init_type();
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register_type(_type_handle, "IndexBufferContext",
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BufferContext::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 std::ostream &operator << (std::ostream &out, const IndexBufferContext &context) {
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context.output(out);
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return out;
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}
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#include "indexBufferContext.I"
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#endif
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