64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
/**
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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 tinyTextureContext.cxx
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* @author drose
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* @date 2008-04-30
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*/
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#include "tinyTextureContext.h"
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#include "zgl.h"
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TypeHandle TinyTextureContext::_type_handle;
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/**
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* Releases the memory associated with the texture.
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*/
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TinyTextureContext::
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~TinyTextureContext() {
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GLTexture *gltex = &_gltex;
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if (gltex->allocated_buffer != nullptr) {
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nassertv(gltex->num_levels != 0);
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get_class_type().deallocate_array(gltex->allocated_buffer);
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gltex->allocated_buffer = nullptr;
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gltex->total_bytecount = 0;
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gltex->num_levels = 0;
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} else {
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nassertv(gltex->num_levels == 0);
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}
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}
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/**
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* Evicts the page from the LRU. Called internally when the LRU determines
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* that it is full. May also be called externally when necessary to
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* explicitly evict the page.
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*
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* It is legal for this method to either evict the page as requested, do
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* nothing (in which case the eviction will be requested again at the next
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* epoch), or requeue itself on the tail of the queue (in which case the
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* eviction will be requested again much later).
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*/
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void TinyTextureContext::
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evict_lru() {
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dequeue_lru();
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GLTexture *gltex = &_gltex;
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if (gltex->allocated_buffer != nullptr) {
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nassertv(gltex->num_levels != 0);
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get_class_type().deallocate_array(gltex->allocated_buffer);
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gltex->allocated_buffer = nullptr;
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gltex->total_bytecount = 0;
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gltex->num_levels = 0;
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} else {
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nassertv(gltex->num_levels == 0);
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}
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update_data_size_bytes(0);
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mark_unloaded();
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}
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