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66 lines
1.7 KiB
C
66 lines
1.7 KiB
C
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/*
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Copyright 2007 nVidia, Inc.
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Licensed under the Apache License, Version 2.0 (the "License"); 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 http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software 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 limitations under the License.
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*/
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#pragma once
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#ifndef _ZOH_H
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#define _ZOH_H
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#include "tile.h"
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namespace ZOH {
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// UNUSED ZOH MODES are 0x13, 0x17, 0x1b, 0x1f
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static const int NREGIONS_TWO = 2;
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static const int NREGIONS_ONE = 1;
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static const int NCHANNELS = 3;
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struct FltEndpts
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{
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nv::Vector3 A;
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nv::Vector3 B;
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};
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struct IntEndpts
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{
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int A[NCHANNELS];
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int B[NCHANNELS];
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};
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struct ComprEndpts
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{
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uint A[NCHANNELS];
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uint B[NCHANNELS];
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};
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static const int BLOCKSIZE=16;
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static const int BITSIZE=128;
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void compress(const Tile &t, char *block);
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void decompress(const char *block, Tile &t);
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float compressone(const Tile &t, char *block);
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float compresstwo(const Tile &t, char *block);
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void decompressone(const char *block, Tile &t);
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void decompresstwo(const char *block, Tile &t);
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float refinetwo(const Tile &tile, int shapeindex_best, const FltEndpts endpts[NREGIONS_TWO], char *block);
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float roughtwo(const Tile &tile, int shape, FltEndpts endpts[NREGIONS_TWO]);
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float refineone(const Tile &tile, int shapeindex_best, const FltEndpts endpts[NREGIONS_ONE], char *block);
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float roughone(const Tile &tile, int shape, FltEndpts endpts[NREGIONS_ONE]);
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bool isone(const char *block);
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}
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#endif // _ZOH_H
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