Lingfeng Yang | 8e2b6e0 | 2016-10-14 11:20:45 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2016 The Android Open Source Project |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | #include "IndexRangeCache.h" |
| 18 | |
| 19 | // This is almost literally |
| 20 | // external/angle/src/libANGLE/IndexRangeCache.cpp |
| 21 | |
| 22 | void IndexRangeCache::addRange(GLenum type, |
| 23 | size_t offset, |
| 24 | size_t count, |
| 25 | bool primitiveRestartEnabled, |
| 26 | int start, |
| 27 | int end) { |
| 28 | IndexRange r; |
| 29 | r.start = start; |
| 30 | r.end = end; |
| 31 | mIndexRangeCache[IndexRangeKey(type, offset, count, primitiveRestartEnabled)] = r; |
| 32 | } |
| 33 | |
| 34 | bool IndexRangeCache::findRange(GLenum type, |
| 35 | size_t offset, |
| 36 | size_t count, |
| 37 | bool primitiveRestartEnabled, |
| 38 | int* start_out, |
| 39 | int* end_out) const { |
| 40 | IndexRangeMap::const_iterator it = |
| 41 | mIndexRangeCache.find( |
| 42 | IndexRangeKey(type, offset, count, primitiveRestartEnabled)); |
| 43 | |
| 44 | if (it != mIndexRangeCache.end()) { |
| 45 | if (start_out) *start_out = it->second.start; |
| 46 | if (end_out) *end_out = it->second.end; |
| 47 | return true; |
| 48 | } else { |
| 49 | if (start_out) *start_out = 0; |
| 50 | if (end_out) *end_out = 0; |
| 51 | return false; |
| 52 | } |
| 53 | } |
| 54 | |
| 55 | |
| 56 | void IndexRangeCache::invalidateRange(size_t offset, size_t size) { |
| 57 | size_t invalidateStart = offset; |
| 58 | size_t invalidateEnd = offset + size; |
| 59 | |
Yahan Zhou | 0f3971d | 2018-11-28 12:00:13 -0800 | [diff] [blame] | 60 | IndexRangeMap::iterator it = mIndexRangeCache.begin(); |
Lingfeng Yang | 8e2b6e0 | 2016-10-14 11:20:45 -0700 | [diff] [blame] | 61 | |
| 62 | while (it != mIndexRangeCache.end()) { |
| 63 | size_t rangeStart = it->first.offset; |
| 64 | size_t rangeEnd = |
| 65 | it->first.offset + |
| 66 | it->first.count * glSizeof(it->first.type); |
| 67 | |
| 68 | if (invalidateEnd < rangeStart || |
| 69 | invalidateStart > rangeEnd) { |
| 70 | ++it; |
| 71 | } else { |
| 72 | mIndexRangeCache.erase(it++); |
| 73 | } |
| 74 | } |
| 75 | } |
| 76 | |
| 77 | void IndexRangeCache::clear() { |
| 78 | mIndexRangeCache.clear(); |
| 79 | } |