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80 lines
2.5 KiB
80 lines
2.5 KiB
/*
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* Copyright (C) 2016 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "IndexRangeCache.h"
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// This is almost literally
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// external/angle/src/libANGLE/IndexRangeCache.cpp
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void IndexRangeCache::addRange(GLenum type,
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size_t offset,
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size_t count,
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bool primitiveRestartEnabled,
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int start,
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int end) {
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IndexRange r;
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r.start = start;
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r.end = end;
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mIndexRangeCache[IndexRangeKey(type, offset, count, primitiveRestartEnabled)] = r;
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}
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bool IndexRangeCache::findRange(GLenum type,
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size_t offset,
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size_t count,
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bool primitiveRestartEnabled,
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int* start_out,
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int* end_out) const {
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IndexRangeMap::const_iterator it =
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mIndexRangeCache.find(
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IndexRangeKey(type, offset, count, primitiveRestartEnabled));
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if (it != mIndexRangeCache.end()) {
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if (start_out) *start_out = it->second.start;
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if (end_out) *end_out = it->second.end;
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return true;
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} else {
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if (start_out) *start_out = 0;
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if (end_out) *end_out = 0;
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return false;
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}
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}
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void IndexRangeCache::invalidateRange(size_t offset, size_t size) {
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size_t invalidateStart = offset;
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size_t invalidateEnd = offset + size;
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IndexRangeMap::iterator it = mIndexRangeCache.begin();
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while (it != mIndexRangeCache.end()) {
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size_t rangeStart = it->first.offset;
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size_t rangeEnd =
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it->first.offset +
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it->first.count * glSizeof(it->first.type);
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if (invalidateEnd < rangeStart ||
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invalidateStart > rangeEnd) {
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++it;
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} else {
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mIndexRangeCache.erase(it++);
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}
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}
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}
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void IndexRangeCache::clear() {
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mIndexRangeCache.clear();
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}
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