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https://github.com/libretro/scummvm.git
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f8c72b5967
Thanks to pixel repacking using cpu data cache, this has a low runtime cost even for TGL_LINEAR. Adds support for TGL_NEAREST. Adds support for TGL_MIRRORED_REPEAT, TGL_CLAMP_TO_EDGE and TGL_REPEAT. Also, add support for more texture clamping and resampling options. Mipmaps are not supported, although their sampling modes will be applied - but to the full-size texture instead of selected mipmap. Note: Texture sampler is still chosen at texture creation time.
86 lines
2.3 KiB
C++
86 lines
2.3 KiB
C++
/* ResidualVM - A 3D game interpreter
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*
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* ResidualVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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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 for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#ifndef GRAPHICS_TEXELBUFFER_H
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#define GRAPHICS_TEXELBUFFER_H
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#include "graphics/pixelbuffer.h"
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namespace Graphics {
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class TexelBuffer {
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public:
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TexelBuffer(unsigned int width, unsigned int height, unsigned int textureSize);
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virtual ~TexelBuffer() {};
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void getARGBAt(
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unsigned int wrap_s, unsigned int wrap_t,
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int s, int t,
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uint8 &a, uint8 &r, uint8 &g, uint8 &b
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) const;
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protected:
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virtual void getARGBAt(
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unsigned int pixel,
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unsigned int ds, unsigned int dt,
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uint8 &a, uint8 &r, uint8 &g, uint8 &b
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) const = 0;
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unsigned int _width, _height, _fracTextureUnit, _fracTextureMask;
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float _widthRatio, _heightRatio;
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};
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class NearestTexelBuffer : public TexelBuffer {
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public:
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NearestTexelBuffer(const PixelBuffer &buf, unsigned int width, unsigned int height, unsigned int textureSize);
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~NearestTexelBuffer();
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protected:
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void getARGBAt(
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unsigned int pixel,
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unsigned int, unsigned int,
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uint8 &a, uint8 &r, uint8 &g, uint8 &b
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) const override;
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private:
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PixelBuffer _buf;
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};
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class BilinearTexelBuffer : public TexelBuffer {
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public:
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BilinearTexelBuffer(const PixelBuffer &buf, unsigned int width, unsigned int height, unsigned int textureSize);
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~BilinearTexelBuffer();
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protected:
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void getARGBAt(
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unsigned int pixel,
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unsigned int ds, unsigned int dt,
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uint8 &a, uint8 &r, uint8 &g, uint8 &b
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) const override;
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private:
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uint32 *_texels;
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};
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}
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#endif
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