--- /dev/null
+/*
+ * 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 __INTERNAL_H__
+#define __INTERNAL_H__
+
+#include "Ext_TxFilter.h"
+
+/* dll exports */
+#ifdef TXFILTER_DLL
+#define TAPI __declspec(dllexport)
+#define TAPIENTRY
+#else
+#define TAPI
+#define TAPIENTRY
+#endif
+
+#include <stdint.h>
+
+typedef uint8_t uint8;
+typedef uint16_t uint16;
+typedef uint32_t uint32;
+
+#ifdef WIN32
+#define KBHIT(key) ((GetAsyncKeyState(key) & 0x8001) == 0x8001)
+#else
+#define KBHIT(key) (0)
+#endif
+
+/* from OpenGL glext.h */
+#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0
+#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1
+#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2
+#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3
+
+/* for explicit fxt1 compression */
+#define CC_CHROMA 0x0
+#define CC_HI 0x1
+#define CC_ALPHA 0x2
+
+/* in-memory zlib texture compression */
+#define GR_TEXFMT_GZ 0x8000
+
+#if 0 /* this is here to remind me of other formats */
+/* from 3Dfx Interactive Inc. glide.h */
+#define GR_TEXFMT_8BIT 0x0
+#define GR_TEXFMT_RGB_332 GR_TEXFMT_8BIT
+#define GR_TEXFMT_YIQ_422 0x1
+#define GR_TEXFMT_ALPHA_8 0x2 /* (0..0xFF) alpha */
+#define GR_TEXFMT_INTENSITY_8 0x3 /* (0..0xFF) intensity */
+#define GR_TEXFMT_ALPHA_INTENSITY_44 0x4
+#define GR_TEXFMT_P_8 0x5 /* 8-bit palette */
+#define GR_TEXFMT_RSVD0 0x6 /* GR_TEXFMT_P_8_RGBA */
+#define GR_TEXFMT_P_8_6666 GR_TEXFMT_RSVD0
+#define GR_TEXFMT_P_8_6666_EXT GR_TEXFMT_RSVD0
+#define GR_TEXFMT_RSVD1 0x7
+#define GR_TEXFMT_16BIT 0x8
+#define GR_TEXFMT_ARGB_8332 GR_TEXFMT_16BIT
+#define GR_TEXFMT_AYIQ_8422 0x9
+#define GR_TEXFMT_RGB_565 0xa
+#define GR_TEXFMT_ARGB_1555 0xb
+#define GR_TEXFMT_ARGB_4444 0xc
+#define GR_TEXFMT_ALPHA_INTENSITY_88 0xd
+#define GR_TEXFMT_AP_88 0xe /* 8-bit alpha 8-bit palette */
+#define GR_TEXFMT_RSVD2 0xf
+#define GR_TEXFMT_RSVD4 GR_TEXFMT_RSVD2
+
+/* from 3Dfx Interactive Inc. g3ext.h */
+#define GR_TEXFMT_ARGB_CMP_FXT1 0x11
+#define GR_TEXFMT_ARGB_8888 0x12
+#define GR_TEXFMT_YUYV_422 0x13
+#define GR_TEXFMT_UYVY_422 0x14
+#define GR_TEXFMT_AYUV_444 0x15
+#define GR_TEXFMT_ARGB_CMP_DXT1 0x16
+#define GR_TEXFMT_ARGB_CMP_DXT2 0x17
+#define GR_TEXFMT_ARGB_CMP_DXT3 0x18
+#define GR_TEXFMT_ARGB_CMP_DXT4 0x19
+#define GR_TEXFMT_ARGB_CMP_DXT5 0x1A
+#define GR_TEXTFMT_RGB_888 0xFF
+#endif
+
+#endif /* __INTERNAL_H__ */