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47 lines
1.7 KiB
C++
47 lines
1.7 KiB
C++
/* Python-rgbcx Texture Compression Library
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Copyright (C) 2021 Andrew Cassidy <drewcassidy@me.com>
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Partially derived from rgbcx.h written by Richard Geldreich <richgel99@gmail.com>
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and licenced under the public domain
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <stddef.h>
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#include "../BC4/BC4Decoder.h"
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#include "../BlockDecoder.h"
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#include "../ColorBlock.h"
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#include "../ndebug.h"
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#include "../blocks.h"
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namespace rgbcx {
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class BC5Decoder : public BlockDecoder<BC5Block, 4, 4> {
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public:
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BC5Decoder(size_t chan0 = 0, size_t chan1 = 1) : BC5Decoder(BC4Decoder(), chan0, chan1) {}
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BC5Decoder(const BC4Decoder &bc4_decoder, size_t chan0 = 0, size_t chan1 = 1) : _bc4_decoder(bc4_decoder), _chan0(chan0), _chan1(chan1) {}
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void DecodeBlock(Color4x4 dest, BC5Block *const block) const noexcept(ndebug) override;
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constexpr size_t GetChannel0() const { return _chan0; }
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constexpr size_t GetChannel1() const { return _chan1; }
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private:
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const BC4Decoder &_bc4_decoder;
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const size_t _chan0;
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const size_t _chan1;
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};
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} // namespace rgbcx
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