95 lines
2.7 KiB
Text
95 lines
2.7 KiB
Text
/**
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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 vertexBufferContext.I
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* @author drose
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* @date 2005-03-17
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*/
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/**
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*
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*/
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INLINE VertexBufferContext::
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VertexBufferContext(PreparedGraphicsObjects *pgo, GeomVertexArrayData *data) :
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BufferContext(&pgo->_vbuffer_residency, data),
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AdaptiveLruPage(0)
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{
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}
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/**
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* Returns the pointer to the client-side array data object.
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*/
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INLINE GeomVertexArrayData *VertexBufferContext::
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get_data() const {
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return (GeomVertexArrayData *)_object;
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}
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/**
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* Returns true if the data has changed size since the last time mark_loaded()
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* was called.
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*/
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INLINE bool VertexBufferContext::
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changed_size(const GeomVertexArrayDataHandle *reader) const {
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nassertr(reader->get_object() == get_data(), false);
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return get_data_size_bytes() != (size_t)reader->get_data_size_bytes();
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}
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/**
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* Returns true if the data has changed its usage hint since the last time
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* mark_loaded() was called.
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*/
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INLINE bool VertexBufferContext::
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changed_usage_hint(const GeomVertexArrayDataHandle *reader) const {
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nassertr(reader->get_object() == get_data(), false);
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return _usage_hint != reader->get_usage_hint();
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}
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/**
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* Returns true if the data has been modified since the last time
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* mark_loaded() was called.
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*/
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INLINE bool VertexBufferContext::
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was_modified(const GeomVertexArrayDataHandle *reader) const {
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nassertr(reader->get_object() == get_data(), false);
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return get_modified() != reader->get_modified();
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}
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/**
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* Should be called (usually by a derived class) when the on-card size of this
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* object has changed.
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*/
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INLINE void VertexBufferContext::
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update_data_size_bytes(size_t new_data_size_bytes) {
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BufferContext::update_data_size_bytes(new_data_size_bytes);
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AdaptiveLruPage::set_lru_size(new_data_size_bytes);
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}
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/**
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* Should be called after the VertexBufferContext has been loaded into
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* graphics memory, this updates the internal flags for changed_size() and
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* modified().
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*/
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INLINE void VertexBufferContext::
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mark_loaded(const GeomVertexArrayDataHandle *reader) {
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nassertv(reader->get_object() == get_data());
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update_data_size_bytes(reader->get_data_size_bytes());
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update_modified(reader->get_modified());
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_usage_hint = reader->get_usage_hint();
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// Assume the buffer is now resident.
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set_resident(true);
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}
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/**
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* Should be called after the buffer has been forced out of graphics memory.
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*/
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INLINE void VertexBufferContext::
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mark_unloaded() {
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update_modified(UpdateSeq::old());
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set_resident(false);
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}
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