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diff --git a/source/gles2glide64/src/GlideHQ/TextureFilters.h b/source/gles2glide64/src/GlideHQ/TextureFilters.h
new file mode 100644
index 0000000..7830eac
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+++ b/source/gles2glide64/src/GlideHQ/TextureFilters.h
@@ -0,0 +1,81 @@
+/*
+ * Texture Filtering
+ * Version:  1.0
+ *
+ * Copyright (C) 2007  Hiroshi Morii   All Rights Reserved.
+ * Email koolsmoky(at)users.sourceforge.net
+ * Web   http://www.3dfxzone.it/koolsmoky
+ *
+ * this is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * this is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Make; see the file COPYING.  If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+
+#ifndef __TEXTUREFILTERS_H__
+#define __TEXTUREFILTERS_H__
+
+/* 16bpp filters are somewhat buggy and output image is not clean.
+ * Since there's not much time, we'll just convert them to ARGB8888
+ * and use 32bpp filters until fixed.
+ * (1:enable hack, 0:disable hack) */
+#define _16BPP_HACK 1
+
+#include "TxInternal.h"
+
+/* enhancers */
+void hq4x_8888(unsigned char * pIn, unsigned char * pOut, int Xres, int Yres, int SrcPPL, int BpL);
+
+void hq2x_32(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+void hq2xS_32(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+
+void lq2x_32(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+void lq2xS_32(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+
+void Super2xSaI_8888(uint32 *srcPtr, uint32 *destPtr, uint32 width, uint32 height, uint32 pitch);
+
+void Texture2x_32(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+
+/* filters */
+void SharpFilter_8888(uint32 *src, uint32 srcwidth, uint32 srcheight, uint32 *dest, uint32 filter);
+
+void SmoothFilter_8888(uint32 *src, uint32 srcwidth, uint32 srcheight, uint32 *dest, uint32 filter);
+
+/* helper */
+void filter_8888(uint32 *src, uint32 srcwidth, uint32 srcheight, uint32 *dest, uint32 filter);
+
+#if !_16BPP_HACK
+void hq4x_init(void);
+void hq4x_4444(unsigned char * pIn, unsigned char * pOut, int Xres, int Yres, int SrcPPL, int BpL);
+void hq4x_1555(unsigned char * pIn, unsigned char * pOut, int Xres, int Yres, int SrcPPL, int BpL);
+void hq4x_565 (unsigned char * pIn, unsigned char * pOut, int Xres, int Yres, int SrcPPL, int BpL);
+
+void hq2x_16(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+void hq2xS_16(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+
+void lq2x_16(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+void lq2xS_16(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+
+void Super2xSaI_4444(uint16 *srcPtr, uint16 *destPtr, uint32 width, uint32 height, uint32 pitch);
+void Super2xSaI_1555(uint16 *srcPtr, uint16 *destPtr, uint32 width, uint32 height, uint32 pitch);
+void Super2xSaI_565 (uint16 *srcPtr, uint16 *destPtr, uint32 width, uint32 height, uint32 pitch);
+void Super2xSaI_8   (uint8  *srcPtr, uint8  *destPtr, uint32 width, uint32 height, uint32 pitch);
+
+void Texture2x_16(uint8 *srcPtr, uint32 srcPitch, uint8 *dstPtr, uint32 dstPitch, int width, int height);
+
+void SharpFilter_4444(uint16 *src, uint32 srcwidth, uint32 srcheight, uint16 *dest, uint32 filter);
+
+void SmoothFilter_4444(uint16 *src, uint32 srcwidth, uint32 srcheight, uint16 *dest, uint32 filter);
+#endif
+
+#endif /* __TEXTUREFILTERS_H__ */