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https://github.com/hrydgard/ppsspp.git
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55 lines
2.4 KiB
C++
55 lines
2.4 KiB
C++
// Copyright (c) 2012- PPSSPP Project.
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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 General Public License as published by
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// the Free Software Foundation, version 2.0 or later versions.
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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 General Public License 2.0 for more details.
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// A copy of the GPL 2.0 should have been included with the program.
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// If not, see http://www.gnu.org/licenses/
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// Official git repository and contact information can be found at
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// https://github.com/hrydgard/ppsspp and http://www.ppsspp.org/.
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#pragma once
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#include "Common/CommonTypes.h"
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#include "Common/MemoryUtil.h"
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static const int MIN_TEXSCALE_LINES_PER_THREAD = 4;
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// The texture scaler requires input to be in R8G8B8A8.
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// (It's OK if you flip R and B as they are not treated very differently from each other.
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// They will of course not unflip during the operation so be aware of that).
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class TextureScalerCommon {
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public:
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TextureScalerCommon();
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~TextureScalerCommon();
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void ScaleAlways(u32 *out, u32 *src, int width, int height, int *scaledWidth, int *scaledHeight, int factor);
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bool Scale(u32 *&data, int width, int height, int *scaledWidth, int *scaledHeight, int factor);
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bool ScaleInto(u32 *out, u32 *src, int width, int height, int *scaledWidth, int *scaledHeight, int factor);
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enum { XBRZ = 0, HYBRID = 1, BICUBIC = 2, HYBRID_BICUBIC = 3 };
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protected:
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static void ScaleXBRZ(int factor, u32* source, u32* dest, int width, int height);
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void ScaleBilinear(int factor, u32* source, u32* dest, int width, int height);
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static void ScaleBicubicBSpline(int factor, u32* source, u32* dest, int width, int height);
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static void ScaleBicubicMitchell(int factor, u32* source, u32* dest, int width, int height);
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void ScaleHybrid(int factor, u32* source, u32* dest, int width, int height, bool bicubic = false);
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void DePosterize(u32* source, u32* dest, int width, int height);
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static bool IsEmptyOrFlat(const u32 *data, int pixels) ;
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// depending on the factor and texture sizes, these can get pretty large
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// maximum is (100 MB total for a 512 by 512 texture with scaling factor 5 and hybrid scaling)
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// of course, scaling factor 5 is totally silly anyway
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AlignedVector<u32, 16> bufDeposter, bufOutput, bufTmp1, bufTmp2, bufTmp3;
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};
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