--- /dev/null
+/*
+** THIS SOFTWARE IS SUBJECT TO COPYRIGHT PROTECTION AND IS OFFERED ONLY
+** PURSUANT TO THE 3DFX GLIDE GENERAL PUBLIC LICENSE. THERE IS NO RIGHT
+** TO USE THE GLIDE TRADEMARK WITHOUT PRIOR WRITTEN PERMISSION OF 3DFX
+** INTERACTIVE, INC. A COPY OF THIS LICENSE MAY BE OBTAINED FROM THE
+** DISTRIBUTOR OR BY CONTACTING 3DFX INTERACTIVE INC(info@3dfx.com).
+** THIS PROGRAM IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
+** EXPRESSED OR IMPLIED. SEE THE 3DFX GLIDE GENERAL PUBLIC LICENSE FOR A
+** FULL TEXT OF THE NON-WARRANTY PROVISIONS.
+**
+** USE, DUPLICATION OR DISCLOSURE BY THE GOVERNMENT IS SUBJECT TO
+** RESTRICTIONS AS SET FORTH IN SUBDIVISION (C)(1)(II) OF THE RIGHTS IN
+** TECHNICAL DATA AND COMPUTER SOFTWARE CLAUSE AT DFARS 252.227-7013,
+** AND/OR IN SIMILAR OR SUCCESSOR CLAUSES IN THE FAR, DOD OR NASA FAR
+** SUPPLEMENT. UNPUBLISHED RIGHTS RESERVED UNDER THE COPYRIGHT LAWS OF
+** THE UNITED STATES.
+**
+** COPYRIGHT 3DFX INTERACTIVE, INC. 1999, ALL RIGHTS RESERVED
+*/
+
+/*
+** H3EXT.H
+**
+** The following #defines are relevant when using Glide:
+**
+** One of the following "platform constants" must be defined during
+** compilation:
+**
+** __DOS__ Defined for 32-bit DOS applications
+** __WIN32__ Defined for 32-bit Windows applications
+** __sparc__ Defined for Sun Solaris/SunOS
+** __linux__ Defined for Linux applications
+** __FreeBSD__ Defined for FreeBSD applications
+** __NetBSD__ Defined for NetBSD applications
+** __OpenBSD__ Defined for OpenBSD applications
+** __IRIX__ Defined for SGI Irix applications
+**
+*/
+#ifndef __H3EXT_H__
+#define __H3EXT_H__
+
+#include <3dfx.h>
+#include <glidesys.h>
+#include <sst1vid.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+** -----------------------------------------------------------------------
+** TYPE DEFINITIONS
+** -----------------------------------------------------------------------
+*/
+/*
+** -----------------------------------------------------------------------
+** CONSTANTS AND TYPES
+** -----------------------------------------------------------------------
+*/
+
+/*
+ * gregk 5/3/99
+ * Constants defined for SSTH3_ALPHADITHERMODE registry key
+ */
+
+#define OPTIMAL 1
+#define SHARPER 2
+#define SMOOTHER 3
+
+/* tbext */
+#define GR_BUFFER_TEXTUREBUFFER_EXT 0x6
+#define GR_BUFFER_TEXTUREAUXBUFFER_EXT 0x7
+
+typedef FxU32 GrPixelFormat_t;
+
+#define GR_PIXFMT_I_8 0x0001
+#define GR_PIXFMT_AI_88 0x0002
+#define GR_PIXFMT_RGB_565 0x0003
+#define GR_PIXFMT_ARGB_1555 0x0004
+#define GR_PIXFMT_ARGB_8888 0x0005
+#define GR_PIXFMT_AA_2_RGB_565 0x0006
+#define GR_PIXFMT_AA_2_ARGB_1555 0x0007
+#define GR_PIXFMT_AA_2_ARGB_8888 0x0008
+#define GR_PIXFMT_AA_4_RGB_565 0x0009
+#define GR_PIXFMT_AA_4_ARGB_1555 0x000a
+#define GR_PIXFMT_AA_4_ARGB_8888 0x000b
+#define GR_PIXFMT_AA_8_RGB_565 0x000c /* 8xaa */
+#define GR_PIXFMT_AA_8_ARGB_1555 0x000d
+#define GR_PIXFMT_AA_8_ARGB_8888 0x000e
+
+
+#define GR_LFBWRITEMODE_Z32 0x0008
+
+typedef FxU32 GrAAMode_t;
+
+#define GR_AA_NONE 0x0000
+#define GR_AA_4SAMPLES 0x0001
+
+typedef FxU8 GrStencil_t;
+
+typedef FxU32 GrStencilOp_t;
+#define GR_STENCILOP_KEEP 0x00 /* keep current value */
+#define GR_STENCILOP_ZERO 0x01 /* set to zero */
+#define GR_STENCILOP_REPLACE 0x02 /* replace with reference value */
+#define GR_STENCILOP_INCR_CLAMP 0x03 /* increment - clamp */
+#define GR_STENCILOP_DECR_CLAMP 0x04 /* decrement - clamp */
+#define GR_STENCILOP_INVERT 0x05 /* bitwise inversion */
+#define GR_STENCILOP_INCR_WRAP 0x06 /* increment - wrap */
+#define GR_STENCILOP_DECR_WRAP 0x07 /* decrement - wrap */
+
+#define GR_TEXTURE_UMA_EXT 0x06
+#define GR_STENCIL_MODE_EXT 0x07
+#define GR_OPENGL_MODE_EXT 0x08
+
+typedef FxU32 GrCCUColor_t;
+
+typedef FxU32 GrACUColor_t;
+
+typedef FxU32 GrTCCUColor_t;
+
+typedef FxU32 GrTACUColor_t;
+
+#define GR_CMBX_ZERO 0x00
+#define GR_CMBX_TEXTURE_ALPHA 0x01
+#define GR_CMBX_ALOCAL 0x02
+#define GR_CMBX_AOTHER 0x03
+#define GR_CMBX_B 0x04
+#define GR_CMBX_CONSTANT_ALPHA 0x05
+#define GR_CMBX_CONSTANT_COLOR 0x06
+#define GR_CMBX_DETAIL_FACTOR 0x07
+#define GR_CMBX_ITALPHA 0x08
+#define GR_CMBX_ITRGB 0x09
+#define GR_CMBX_LOCAL_TEXTURE_ALPHA 0x0a
+#define GR_CMBX_LOCAL_TEXTURE_RGB 0x0b
+#define GR_CMBX_LOD_FRAC 0x0c
+#define GR_CMBX_OTHER_TEXTURE_ALPHA 0x0d
+#define GR_CMBX_OTHER_TEXTURE_RGB 0x0e
+#define GR_CMBX_TEXTURE_RGB 0x0f
+#define GR_CMBX_TMU_CALPHA 0x10
+#define GR_CMBX_TMU_CCOLOR 0x11
+
+typedef FxU32 GrCombineMode_t;
+#define GR_FUNC_MODE_ZERO 0x00
+#define GR_FUNC_MODE_X 0x01
+#define GR_FUNC_MODE_ONE_MINUS_X 0x02
+#define GR_FUNC_MODE_NEGATIVE_X 0x03
+#define GR_FUNC_MODE_X_MINUS_HALF 0x04
+
+typedef FxU32 GrAlphaBlendOp_t;
+#define GR_BLEND_OP_ADD 0x00
+#define GR_BLEND_OP_SUB 0x01
+#define GR_BLEND_OP_REVSUB 0x02
+
+#define GR_BLEND_SAME_COLOR_EXT 0x08
+#define GR_BLEND_ONE_MINUS_SAME_COLOR_EXT 0x09
+
+/* Napalm extensions to GrTextureFormat_t */
+#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
+
+/* Napalm extensions to GrLOD_t */
+#define GR_LOD_LOG2_2048 0xb
+#define GR_LOD_LOG2_1024 0xa
+#define GR_LOD_LOG2_512 0x9
+
+/* Napalm extensions to GrTexBaseRange_t */
+#define GR_TEXBASE_2048 0x7
+#define GR_TEXBASE_1024 0x6
+#define GR_TEXBASE_512 0x5
+#define GR_TEXBASE_256_TO_1 0x4
+
+#ifdef __cplusplus
+}
+#endif
+
+#include <glideutl.h>
+
+#endif /* __H3EXT_H__ */