/*
** 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 UNPUBLISHED RIGHTS RESERVED UNDER THE COPYRIGHT LAWS OF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
**
** $Header: fxglide.h, 44, 6/15/2000 9:18:11 AM, Bill White
** $Log:
**  44   3dfx      1.42.1.0    06/15/00 Bill White      Merged changes to support
**       Linux.
**
**  43   3dfx      1.42        04/21/00 Kenneth Dyke    Magic FX_GLIDE_NO_HW
**       support.
**  42   3dfx      1.41        04/13/00 Kenneth Dyke    Added support for new style
**       2-sample AA mode.
**  41   3dfx      1.40        04/10/00 Kenneth Dyke    Added magical screenshot
**       hotkey.
**  40   3dfx      1.39        04/04/00 Kenneth Dyke    Fixed addressing for large
**       tiled textures.
**  39   3dfx      1.38        03/25/00 Adam Briggs     added support for
**       SSTH3_SLI_AA_CONFIGURATION (the env var the control panel uses to force AA
**       modes)
**  38   3dfx      1.37        03/24/00 Chris Dow       Added code to fence every n
**       writes (not to exceed 0x10000) where n is either 0x10000 or indicated by
**       the environment variable FX_GLIDE_FENCE_LIMIT
**
**  37   3dfx      1.36        03/23/00 Kenneth Dyke    Added tracking for whether
**       or not the stencil buffer has ever been cleared.
**  36   3dfx      1.35        03/21/00 Kenneth Dyke    Added variable to allow Y
**       origin swapping SLI band height clamp to be disabled.
**  35   3dfx      1.34        03/19/00 Kenneth Dyke    Made mode2ppc stuff part of
**       the Glide state.
**  34   3dfx      1.33        03/16/00 Kenneth Dyke    User-adjustable LOD bias
**       value.
**  33   3dfx      1.32        03/14/00 Adam Briggs     enable analog sli in 2X
**       modes or when forced
**  32   3dfx      1.31        03/08/00 Kenneth Dyke    Remove bad hwInitP flag.
**  31   3dfx      1.30        03/07/00 Kenneth Dyke    Workaround for weird
**       compressed texture quirk.
**  30   3dfx      1.29        03/06/00 Kenneth Dyke    Added backdoor hack to
**       toggle AA on and off on the fly.
**  29   3dfx      1.28        02/22/00 Kenneth Dyke    Added flag to keep track of
**       whether or not paletted textures are in use.
**  28   3dfx      1.27        02/18/00 Adam Briggs     added FX_GLIDE_WAX_ON var
**       which must be set to 1 to enable the newly uncommented SLI WAX buffer
**       clears
**  27   3dfx      1.26        02/02/00 Kenneth Dyke    Fixed per-TMU constant
**       color values to not interfere with texture chroma keying.
**  26   3dfx      1.25        02/02/00 Kenneth Dyke    Fix parameter setup issue
**       with 2PPC modes.
**  25   3dfx      1.24        02/01/00 Kenneth Dyke    Added code to detect when
**       TMU0 is in passthrough mode and to enabled 2PPC in that case. (Remap TMU1
**       to TMU0).
**  24   3dfx      1.23        01/31/00 Adam Briggs     Changed all device ID magic
**       numbers to use those defined in fxhal.h & added IS_NAPALM macro to test
**       against device ID range
**  23   3dfx      1.22        01/28/00 Kenneth Dyke    Totoally revamped TMU
**       register update mechanism to make 2PPC modes work right regardless of the
**       order of Glide calls.   Also fixed a few register config bugs found when
**       switching between new and old style combine modes.
**  22   3dfx      1.21        01/23/00 Adam Briggs     set & recognize the SSTTYPE
**       var for Voodoo4
**  21   3dfx      1.20        01/21/00 Adam Briggs     some changes to get the
**       correct linear mappings for slave regs and use them to sync the fifos in
**       sli mode
**  20   3dfx      1.19        01/18/00 Kenneth Dyke    Added default AA jitter
**       values to Glide environment.
**  19   3dfx      1.18        01/16/00 Kenneth Dyke    Added column width stuff.
**  18   3dfx      1.17        01/16/00 Kenneth Dyke    Added support to track
**       combine extension usage.
**  17   3dfx      1.16        01/07/00 Adam Briggs     Moved freeThreadStorage
**       from grShutdown to the DllMain process detach code.  This fixes PRS#12190,
**       12192 and 12196.
**  16   3dfx      1.15        01/04/00 Adam Briggs     changed grGetGammaTable to
**       be an extension called grGetGammaTableExt
**  15   3dfx      1.14        12/10/99 Leo Galway      Reset GR_MAX_RESOLUTION to
**       0x17 as result of new mode info breaking builds for V3 and V2 from 3dfx
**       view.
**  14   3dfx      1.13        12/08/99 Leo Galway      Upped GR_MAX_RESOLUTION to
**       compensate for added mode information (1600x1280, 1792x1440, 1920x1080,
**       1920x1200, 2046x1536 ).
**  13   3dfx      1.12        11/22/99 Adam Briggs     Made separate TRISETUP
**       macros for msvc 4x, msvc6 retail and msvc6 debug... fixes some crashing.
**  12   3dfx      1.11        11/10/99 Adam Briggs     Made grBufferClear(Ext)
**       cooperate with linear surfaces & texture buffers
**  11   3dfx      1.10        11/09/99 Adam Briggs     Added support for reading
**       the Status reg on slave chips in order to form a more perfect flush
**       function.
**  10   3dfx      1.9         11/08/99 Larry  warner   Changes to enable building
**       with MSVC 6.
**  9    3dfx      1.8         11/05/99 Anthony tai     added
**       FX_GLIDE_SWAPPENDINGCOUNT. Default=1. Range 0-3
**  8    3dfx      1.7         10/20/99 Anthony tai     remove un-used tmu register
**       shadow
**  7    3dfx      1.6         10/15/99 Anthony tai     move 2ppc setting to state
**       validation
**  6    3dfx      1.5         10/08/99 Adam Briggs     Supported FX_GLIDE_BPP &
**       FX_GLIDE_AA_SAMPLE environment vars so the user can override the pixel
**       format in grSstWinOpen calls
**  5    3dfx      1.4         10/06/99 Anthony tai     disable 2ppc if tmu1 is
**       specified
**  4    3dfx      1.3         09/22/99 Larry  warner   Created download procedures
**       for FXT1 format.
**  3    3dfx      1.2         09/22/99 Adam Briggs     Added
**       grConstantColorValueExt... not yet tested.
**  2    3dfx      1.1         09/17/99 Anthony tai     fixed 2ppc and tmumask for
**       texture color/alpha combine extension
**  1    3dfx      1.0         09/11/99 StarTeam VTS Administrator 
** $
** 
** 164   9/03/99 4:32p Atai
** disable aaCtrl and sliCtrl in winclose
** 
** 163   8/25/99 8:44p Larryw
** Expand mipmap size and offset tables to accommodate FXT1.
** 
** 162   8/20/99 4:56p Atai
** fixed packet4 register bit mask for window glide
** 
** 161   8/19/99 7:55p Larryw
** FXT1  Tsplit changes.
** 
** 160   8/18/99 3:20p Larryw
** FXT1 refinements.
** 
** 159   8/17/99 5:10p Kcd
** sync rather than eieio for P6FENCE on PPC.
** 
** 158   8/16/99 11:18a Adamb
** Merged in V3_OEM_100 fixes
** 
** 157   8/05/99 5:03p Larryw
** FXT1 format works now.
** 
** 156   7/30/99 1:22p Kcd
** Custom TRISETUP macro for PowerPC.
** 
** 155   7/29/99 7:07p Larryw
** Pave the way for FXT1 (but not quite there yet).
** 
** 154   7/26/99 12:11p Atai
** initialize pci registers for sli/aa
** 
** 153   7/23/99 2:01p Atai
** change tbuffer interface to grTBufferWriteMaskExt
** 
** 152   7/22/99 8:14p Larryw
** Texture format byte-depth improvements
** 
** 151   7/22/99 1:18p Atai
** added grTBufferMaskExt
** 
** 149   7/19/99 2:52p Atai
** added variable for sli
** 
** 148   7/18/99 1:59p Atai
** added grAlphaBlendFunctionExt
** 
** 146   7/16/99 10:59a Atai
** remove un-supported mode
** fixed tcc, tac problem
** 
** 145   7/14/99 6:23p Larryw
** Remove obsolete G3_LOD_TRANSLATE() macro
** Define _grMipMapOffset[][] at compile time
** Fix 2k texture address-finding
** 
** 144   7/14/99 5:07p Atai
** fixed stencil interface and some cc/ac stuff
** 
** 143   7/14/99 9:39a Atai
** direct register write for glide3x
** test04 can do 4 sample aa (2 chips)
** 
** 142   7/08/99 8:48p Atai
** stencil interface update
** 
** 141   7/07/99 6:52p Larryw
** * 2k texture support
** * Reversed order of LOD tables
** * Added 512,1024, and 2048-sized entries in tables
** * Nullified G3_LOD_TRANSLATE()
** * Created _g3LodXlat() for where tLOD register is read/written
** * Misc cosmetic changes.
** 
** 140   7/06/99 2:43p Atai
** added grcolormaskext and gbc variables
** 
** 139   6/29/99 7:19p Atai
** remove argument for enabling SST_CM_USE_COMBINE_MODE
** 
** 138   6/29/99 2:52p Atai
** added invert mode for COMBINE ext c and d term
** 
** 137   6/27/99 12:44p Atai
** fixed CC and TCC
** 
** 136   6/24/99 7:18p Atai
** added coombine_ext_mode and 2 buffers per chip
** 
** 135   6/14/99 5:54p Larryw
** Added support for 32-bit textures.
** 
** 134   6/14/99 2:05p Atai
** added grPixelFormat and grPixelSample.
** 
** 133   6/13/99 6:07p Atai
** remove aa type for winopen ext
** 
** 131   6/10/99 5:12p Atai
** fist pass CC and AC ext
** 
** 130   6/09/99 5:23p Atai
** added _grChipMask
** 
** 129   6/09/99 2:35p Atai
** added combine mode bit and args defines
** 
** 128   6/08/99 6:03p Stb_sbrooks
** Added fifoSize environment var
** 
** 127   6/08/99 5:48p Atai
** place holder
** 
** 124   6/04/99 11:16a Atai
** added #include "h3ext.h"
** 
** 122   6/03/99 6:16p Atai
** added stencil typedef and prototype
** 
** 121   6/03/99 5:22p Russp
** Add in some ifdef'd code to allow variable texture alignment
** 
** 120   6/03/99 4:46p Atai
** added NAPALM_ZDEPTHVALUE_NEAREST and NAPALM_WDEPTHVALUE_FARTHEST
** 
** 119   6/03/99 4:26p Atai
** added device id #defs
** 
** 118   6/03/99 12:16p Kcd
** Wrong SET_ macro being used for FIFO write.
** 
** 117   6/03/99 11:18a Atai
** force deviceID to 7 for code development
** 
** 116   6/01/99 2:34p Atai
** Added grSstWinOpenExt
** 
** 115   5/28/99 12:55p Atai
** fixed clip coord, fog coord ext with w-buffering
** 
** 114   5/24/99 2:49p Jamesb
** Added ptrLostContext field to exported command transport struct.
** 
** 113   5/19/99 3:55p Denis
** 
** 112   5/19/99 12:45p Denis
** First check in of the TEXTUREBUFFER extension.
** Contains both the texture color buffer and texture aux. buffer
** extensions
** that allows to specify a piece of texture memory as a rendering target
** and/or a piece of texture memory as the aux. buffer.
** 
** Probably a non conventional check in, in the sense that the API
** isn't entirely frozen / specified yet. To ease whoever's job it will be
** to complete the extension, I've added a "tbext" comment
** everywhere I made a modification. These should go away
** once the API is frozen.
**  
** 
** 111   5/07/99 12:53p Dow
** My mods to Matts TexAddress fixes
** 
** 110   4/09/99 4:22p Dow
** Fixes for lost surfaces
** 
** 109   4/07/99 7:18p Atai
** added uma extension
** 
** 108   4/06/99 2:43p Dow
** Let alt-tab and surface extension live in peace
** 
** 107   4/05/99 8:25p Dow
** Alt tab mostly happy
** 
** 106   4/04/99 8:51p Atai
** Partial check-in for alt-tab issue. set FX_GLIDE_ALT_TAB=1 to build
** glide3x with hwcQueryContext built into GR_BEGIN_NOFIFOCHECK. It works
** with DEBUG glide only. In the non-debug glide, we can still see the
** desktop corruption.
** 
** 104   4/01/99 7:55p Peter
** made names and comments more meaningful
** 
** 103   3/31/99 9:02p Dow
** context loosing means no writing to hw
** 
** 102   3/30/99 3:20p Atai
** place holder for texture and fifofree defs
** 
** 101   3/24/99 6:17p Peter
** removed rle cruft
** 
** 100   3/19/99 3:18p Peter
** warning about fifo extension
** 
** 99    3/19/99 11:53a Peter
** re-ordered struct for exposing to gl
** 
** 98    3/19/99 11:26a Peter
** expose direct fifo for gl
** 
** 97    3/14/99 1:48p Peter
** really invoke gggsoph
** 
** 96    3/11/99 6:38p Dow
** Resolution help
** 
** 95    3/11/99 6:07p Dow
** Upped GR_MAX_RESOLUTION
** 
** 94    3/10/99 10:42a Peter
** detect katmai-ness
** 
** 93    3/09/99 12:49p Kcd
** oops.
** 
** 92    3/09/99 12:33p Kcd
** Added committedSerialNumebr to command transport struct.
** 
** 91    2/23/99 3:10p Peter
** h3 has a direct gamma table
** 
** 90    2/19/99 8:03p Peter
** new splash crapola
** 
** 89    2/18/99 5:56p Peter
** cleaned up more of the random texture tables
** 
** 88    2/18/99 4:06p Kcd
** Faster getThreadValueFast for MacOS.
** 
** 87    2/18/99 3:38p Kcd
** Mac happiness.
** 
** 86    2/11/99 1:38p Atai
** sync buffer swap pending code, the right way.
** 
** 85    2/09/99 2:08p Atai
** change buffer size to 4
** 
** 84    2/08/99 2:16p Peter
** single buffering is allowed
** 
** 83    2/02/99 4:38p Peter
** 16 byte texture alignmnet boundary
** 
** 82    1/25/99 6:35p Peter
** tiled texture cleanup
** 
** 81    1/20/99 10:54a Dow
** Voodoo 3 id for apps
** 
** 80    1/15/99 10:52a Peter
** cleanup lazy evaluation of fbzMode for grDepthMask and grColorMask
** 
** 79    1/14/99 7:48p Peter
** cleanedup bytes per texel stuff
** 
** 78    1/06/99 11:30a Peter
** cleanup trinalge dispatch code
** 
** 77    1/04/99 12:03p Peter
** use window contexts for sending state
** 
** 76    12/23/98 2:01p Peter
** nt currently has mutexing problems via ddraw and extescape
** 
** 75    12/14/98 6:19p Dow
** Fixed for current surface extension spec
** 
** 74    12/11/98 1:37p Peter
** thread tracing
** 
** 73    12/07/98 11:33a Peter
** norbert's re-fixes of my merge
** 
** 72    12/03/98 9:37a Dow
** Added reserved enumerant for RAM type
** 
** 71    11/30/98 6:57p Peter
** video memory fifo's
** 
** 70    11/21/98 10:19a Atai
** fixed test37 grChromaRangeModeExt error and rename functions
** 
** 69    11/15/98 3:21a Atai
** first attempt to make 2 tmus work in H4 glide3x full screen mode, just
** in time check-in for comdex demo. warning: the code is not completed
** yet.
** 
** 68    11/09/98 5:07p Dow
** Texturing from tiled rendered surfaces works now
** 
** 67    11/02/98 5:34p Peter
** tls per thread for fullscreen contexts
** 
** 66    10/20/98 8:28p Peter
** shared files and fixed whackage
** 
** 65    10/14/98 3:38p Dow
** Gamma stuff
** 
** 64    10/14/98 1:47p Jdt
** Add texture chroma to hw state restore buffer.
** 
** 63    10/13/98 5:27p Peter
** 6666 format hack
** 
** 62    10/12/98 9:51a Peter
** dynamic 3DNow!(tm)
** 
** 61    10/09/98 3:32p Atai
** move texchroma key shadow
** 
** 60    10/09/98 2:44p Atai
** fixed 6666 palette
** 
** 59    9/30/98 12:59p Atai
** added texchromakey and texchromarange for shadow state
** 
** 58    9/11/98 10:45p Jdt
** Switch over to statically allocated in-memory fifo.
** 
** 57    9/04/98 11:35a Peter
** re-open fix for nt (thanks to taco/rob/nt bob)
** 
** 56    8/31/98 10:33a Peter
** asm w/ debugging
** 
** 55    8/30/98 10:54p Jdt
** promote INVALIDATE macro to global dominion
** 
** 54    8/30/98 1:34p Dow
** State & other optimizations
** 
** 53    8/29/98 8:12p Dow
** Clip optimization
** 
** 52    8/29/98 4:34p Dow
** thread optimization stuff
** 
** 51    8/27/98 9:27p Atai
** fix env variable for glide3x
** 
** 50    7/01/98 8:40a Jdt
** removed gc arg from trisetup functions
** 
** 49    8/03/98 6:34a Jdt
** Changes for multi-thread
** 
** 48    8/02/98 5:01p Dow
** Glide Surface Extension
** 
** 46    7/21/98 7:41p Jdt
** fixed palettes
** 
** 45    7/18/98 1:45p Jdt
** Removed TACO_MEMORY_FIFO_HACK
** 
** 44    7/18/98 12:25a Jdt
** Some clean up and new shadow register structure to support state
** restoration.
**
*/
            
/*                                               
** fxglide.h
**  
** Internal declarations for use inside Glide.
**
** GLIDE_LIB:        Defined if building the Glide Library.  This macro
**                   should ONLY be defined by a makefile intended to build
**                   GLIDE.LIB or glide.a.
**
** HAL_CSIM:         Defined if GLIDE should use the software simulator.  An
**                   application is responsible for defining this macro.
**
** GLIDE_NUM_TMU:    Number of physical TMUs installed.  Valid values are 1
**                   and 2.  If this macro is not defined by the application
**                   it is automatically set to the value 2.
**
*/

#ifndef __FXGLIDE_H__
#define __FXGLIDE_H__

/* -----------------------------------------------------------------------
   INCLUDE FILES
   ----------------------------------------------------------------------- */
/* standard */
#include <limits.h>
#include <math.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>

/* 3dfx */
#include <3dfx.h>
#include <glidesys.h>
#include <gdebug.h>
#include <h3.h>

/* local */
#define GR_CDECL
#include "g3ext.h"
#include "fxcmd.h"
#include "gsfc.h"

/* conditional */

#if defined( GLIDE_INIT_HAL )
#include <fxhal.h>
#include <minihwc.h>
#else
#include <minihwc.h>
#define HWC_BASE_ADDR_MASK 0x03UL
#endif /* defined ( GLIDE_INIT_HAL ) */

#if (GLIDE_PLATFORM & GLIDE_OS_WIN32)
#define WIN32_LEANER_AND_MEANER
#include <windows.h>
#include "fxsplash.h"
#endif /* (GLIDE_PLATFORM & GLIDE_OS_WIN32) */

/* -----------------------------------------------------------------------
   Manifest Constants
   ----------------------------------------------------------------------- */
#define MAX_NUM_SST                  4
#define MAX_NUM_CONTEXTS             16

#define VOODOO_GAMMA_TABLE_SIZE      256
#define SST1_BITS_DEPTH              16
#define SST1_ZDEPTHVALUE_NEAREST     0xFFFF
#define SST1_ZDEPTHVALUE_FARTHEST    0x0000
#define SST1_WDEPTHVALUE_NEAREST     0x0000
#define SST1_WDEPTHVALUE_FARTHEST    0xFFFF
#define NAPALM_ZDEPTHVALUE_NEAREST   0xFFFFFF
#define NAPALM_WDEPTHVALUE_FARTHEST  0xFFFFFF

/* Internal define so that we don't have to use the stupid reserved
 * bits identifier in the code since no one knows what that means.
 */
#define GR_TEXFMT_P_8_RGBA           GR_TEXFMT_RSVD0

#define GR_MAX_RESOLUTION   0x17
#define GR_MAX_REFRESH      8
#define GR_MAX_COLOR_BUF    3
#define GR_MAX_AUX_BUF      1
#define GR_MIN_RESOLUTION   0
#define GR_MIN_REFRESH      0
#define GR_MIN_COLOR_BUF    1
#define GR_MIN_AUX_BUF      0

#define GR_AA_ORDERED_OGL               0x00010000
#define GR_AA_ORDERED_POINTS_OGL        GR_AA_ORDERED_OGL+1
#define GR_AA_ORDERED_LINES_OGL         GR_AA_ORDERED_OGL+2
#define GR_AA_ORDERED_TRIANGLES_OGL     GR_AA_ORDERED_OGL+3

#define GR_AA_ORDERED_POINTS_MASK       0x01
#define GR_AA_ORDERED_LINES_MASK        0x02
#define GR_AA_ORDERED_TRIANGLES_MASK    0x04

/* -----------------------------------------------------------------------
   Code Macros
   ----------------------------------------------------------------------- */
#undef  GETENV
#define GETENV getenv

/* -----------------------------------------------------------------------
   Internal Enumerated Types
   ----------------------------------------------------------------------- */
typedef int GrSstType;
#define GR_SSTTYPE_VOODOO    0
#define GR_SSTTYPE_SST96     1
#define GR_SSTTYPE_AT3D      2
#define GR_SSTTYPE_Voodoo2   3
#define GR_SSTTYPE_Banshee   4
#define GR_SSTTYPE_Voodoo3   5
#define GR_SSTTYPE_Voodoo4   6

/*
 * gregk  5/3/99
 * Constants defined for SSTH3_ALPHADITHERMODE  registry key
 */
 
#define OPTIMAL                 1
#define SHARPER                 2
#define SMOOTHER                3

/* -----------------------------------------------------------------------
   Internal Structures
   ----------------------------------------------------------------------- */
typedef struct {
    GrScreenResolution_t resolution;
    FxU32                xres;
    FxU32                yres;
} ResEntry;

typedef struct GrTMUConfig_St {
  int    tmuRev;                /* Rev of Texelfx chip */
  int    tmuRam;                /* 1, 2, or 4 MB */
} GrTMUConfig_t;

typedef struct GrVoodooConfig_St {
  int    fbRam;                         /* 1, 2, or 4 MB */
  int    fbiRev;                        /* Rev of Pixelfx chip */
  int    nTexelfx;                      /* How many texelFX chips are there? */
  FxBool sliDetect;                     /* Is it a scan-line interleaved board? */
  GrTMUConfig_t tmuConfig[GLIDE_NUM_TMU];   /* Configuration of the Texelfx chips */
} GrVoodooConfig_t;

typedef struct GrSst96Config_St {
  int   fbRam;                  /* How much? */
  int   nTexelfx;
  GrTMUConfig_t tmuConfig;
} GrSst96Config_t;

typedef GrVoodooConfig_t GrVoodoo2Config_t;

typedef struct GrAT3DConfig_St {
  int   rev;
} GrAT3DConfig_t;

typedef struct {
  int num_sst;                  /* # of HW units in the system */
  struct {
    GrSstType type;             /* Which hardware is it? */
    union SstBoard_u {
      GrVoodooConfig_t  VoodooConfig;
      GrSst96Config_t   SST96Config;
      GrAT3DConfig_t    AT3DConfig;
      GrVoodoo2Config_t Voodoo2Config;
    } sstBoard;
  } SSTs[MAX_NUM_SST];          /* configuration for each board */
} GrHwConfiguration;

/*
** -----------------------------------------------------------------------
** STUFF FOR STRIPS
** -----------------------------------------------------------------------
*/

#define GR_COLOR_OFFSET_RED     (0 << 2)
#define GR_COLOR_OFFSET_GREEN   (1 << 2)
#define GR_COLOR_OFFSET_BLUE    (2 << 2)
#define GR_COLOR_OFFSET_ALPHA   (3 << 2)

#define GR_VERTEX_OFFSET_X      (0 << 2)
#define GR_VERTEX_OFFSET_Y      (1 << 2)
#define GR_VERTEX_OFFSET_Z      (2 << 2)
#define GR_VERTEX_OFFSET_WFBI   (3 << 2)

#define GR_TEXTURE_OFFSET_S     (0 << 2)
#define GR_TEXTURE_OFFSET_T     (1 << 2)
#define GR_TEXTURE_OFFSET_W     (2 << 2)

#define GR_DLIST_END            0x00
#define GR_VTX_PTR              0x00
#define GR_VTX_PTR_ARRAY        0x01
#define GR_SCALE_OOW            0x00
#define GR_SCALE_COLOR          0x01
#define GR_SCALE_STW            0x02

typedef struct {
  FxU32
    mode;                       /* enable / disable */
  FxI32
    offset;                     /* offset to the parameter data */
} GrVParamInfo;

typedef struct  {
  GrVParamInfo
    vertexInfo,          /* xy */
    zInfo,               /* z(ooz) */
    wInfo,               /* w(oow) */
    aInfo,               /* a float */
    fogInfo,             /* fog */
    rgbInfo,             /* rgb float */
    pargbInfo,           /* pargb byte */
    st0Info,             /* st0 */
    st1Info,             /* st1 */
    qInfo,               /* q */
    q0Info,              /* q0 */
    q1Info;              /* q1 */
  FxU32
    vStride,             /* vertex stride */
    vSize;               /* vertex size */
  FxU32
   colorType;           /* float or byte */
} GrVertexLayout;

/*============================================================
 **  State Monster Stuff:
 **============================================================*/
#define GR_FLUSH_STATE() \
  if (gc->state.invalid) _grValidateState();
      

/* internal enable/disable mode */
#define GR_COMBINEEXT_MODE      0x80000001
#define GR_AA_MULTI_SAMPLE      0x80000002

/* Look in distate.c:grValidateState (NOTVALID macro) to see how these
   are used I wanted to keep the mixed-case register names here, and
   that's why they are mixed case */
#define alphaModeBIT            FXBIT(0)
#define fbzColorPathBIT         FXBIT(1)
#define fbzModeBIT              FXBIT(2)
#define chromaKeyBIT            FXBIT(3)
#define clipRegsBIT             FXBIT(4)
#define zaColorBIT              FXBIT(5)
#define fogModeBIT              FXBIT(6)
#define fogColorBIT             FXBIT(7)
#define lfbModeBIT              FXBIT(8)
#define c0c1BIT                 FXBIT(9)
#define chromaRangeBIT          FXBIT(10)
#define stencilModeBIT          FXBIT(11)
#define stencilOpBIT            FXBIT(12)
#define combineModeBIT          FXBIT(13)
#define renderModeBIT           FXBIT(14)
#define tmuConfigBIT            FXBIT(15)

/* Similar bits for TMU registers */
#define textureModeBIT          FXBIT(0)
#define texBaseAddrBIT          FXBIT(1)
#define texchromaBIT            FXBIT(2)

/*
** lazy evaluate vertexlayout.
** it is not part of the registers so we add the bit in MSB
*/ 
#define vtxlayoutBIT            FXBIT(31)

/*============================================================
 **  Video Stuff:
 **============================================================*/
#define VRETRACEMASK            0x00000fff
#define HRETRACEPOS             16


/*--------------------------------------------------------------------------
  State Restoration Buffer
  --------------------------------------------------------------------------*/
typedef struct {
#define OOII_IIOO_OIII_IIII  0x3C7f
#define SR_MASK_0            OOII_IIOO_OIII_IIII
#define SR_ADDR_0            ((FxU32) &((( SstRegs* )0)->fbzColorPath))
  FxU32 pkt4Hdr_0;

  FxU32 fbzColorPath;    /* 0x104 (  0 ) */
  FxU32 fogMode;         /* 0x108 (  1 ) */
  FxU32 alphaMode;       /* 0x10C (  2 ) */
  FxU32 fbzMode;         /* 0x110 (  3 ) */
  FxU32 lfbMode;         /* 0x114 (  4 ) */
  FxU32 clipLeftRight;   /* 0x118 (  5 ) */
  FxU32 clipBottomTop;   /* 0x11C (  6 ) */
  /* space */
  FxU32 fogColor;        /* 0x12C ( 10 ) */
  FxU32 zaColor;         /* 0x130 ( 11 ) */
  FxU32 chromaKey;       /* 0x134 ( 12 ) */
  FxU32 chromaRange;     /* 0x138 ( 13 ) */
  /* ----------- end packet -------------*/

#define OOOO_OOOO_OOOO_OIII  0x0007
#define SR_MASK_1            OOOO_OOOO_OOOO_OIII
#define SR_ADDR_1            ((FxU32) &((( SstRegs* )0)->stipple))
  FxU32 pkt4Hdr_1;

  FxU32 stipple;         /* 0x140 ( 15 ) */
  FxU32 color0;          /* 0x144 ( 16 ) */
  FxU32 color1;          /* 0x148 ( 17 ) */
  /* ----------- end packet -------------*/

#define SR_WORDS_2       32
#define SR_ADDR_2        ((FxU32) &((( SstRegs* )0)->fogTable[0]))
  FxU32 pkt1Hdr_2;

  FxU32 fogTable[32];
  /* ----------- end packet -------------*/

#ifdef FX_GLIDE_NAPALM
#define OOII_IIII_IIII_IIII  0x3fff
#define SR_MASK_3            OOII_IIII_IIII_IIII
#define SR_ADDR_3            ((FxU32) &((( SstRegs* )0)->renderMode))
  FxU32 pkt4Hdr_3;

  FxU32 renderMode;         /* 0x1E0 (  0 ) */
  FxU32 stencilMode;        /* 0x1E4 (  1 ) */
  FxU32 stencilOp;          /* 0x1E8 (  2 ) */
  FxU32 colBufferAddr;      /* 0x1EC (  3 ) */
  FxU32 colBufferStride;    /* 0x1F0 (  4 ) */
  FxU32 auxBufferAddr;      /* 0x1F4 (  5 ) */
  FxU32 auxBufferStride;    /* 0x1F8 (  6 ) */
  FxU32 fbiStenciltestFail; /* 0x1FC (  7 ) */
  FxU32 clipLeftRight1;     /* 0x200 (  8 ) */
  FxU32 clipBottomTop1;     /* 0x204 (  9 ) */
  FxU32 combineMode;        /* 0x208 ( 10 ) */
  FxU32 sliCtrl;            /* 0x20C ( 11 ) */
  FxU32 aaCtrl;             /* 0x210 ( 12 ) */
  FxU32 chipMask;           /* 0x214 ( 13 ) */
  /* ----------- end packet -------------*/
#else /* !FX_GLIDE_NAPALM */
#define OOOO_OOOO_OOOO_IIII  0x000f
#define SR_MASK_3            OOOO_OOOO_OOOO_IIII
#define SR_ADDR_3            ((FxU32) &((( SstRegs* )0)->colBufferAddr))
  FxU32 pkt4Hdr_3;

  FxU32 colBufferAddr;   /* 0x1EC (  0 ) */
  FxU32 colBufferStride; /* 0x1F0 (  1 ) */
  FxU32 auxBufferAddr;   /* 0x1F4 (  2 ) */
  FxU32 auxBufferStride; /* 0x1F8 (  3 ) */
  /* ----------- end packet -------------*/
#endif /* FX_GLIDE_NAPALM */

  struct tmuState {
#define OOOO_OOOO_OIII_IIII  0x007f
#define SR_MASK_4            OOOO_OOOO_OIII_IIII
    FxU32 texPkt4Hdr_0;

    FxU32 textureMode;     /* 0x300 (  0 ) */
    FxU32 tLOD;            /* 0x304 (  1 ) */
    FxU32 tDetail;         /* 0x308 (  2 ) */
    FxU32 texBaseAddr;     /* 0x30C (  3 ) */
    FxU32 texBaseAddr_1;   /* 0x310 (  4 ) */
    FxU32 texBaseAddr_2;   /* 0x314 (  5 ) */
    FxU32 texBaseAddr_3_8; /* 0x318 (  6 ) */
    /* ----------- end packet -------------*/

#define OOOO_OOOO_OOOO_OOII  0x0002
#define SR_MASK_5            OOOO_OOOO_OOOO_OOII
    FxU32 texPkt4Hdr_1;

    FxU32 texchromaKey;
    FxU32 texchromaRange;
    /* ----------- end packet -------------*/
    
#define SR_WORDS_6       24
    FxU32 texPkt1Hdr_2;
    
    FxU32 nccTable0[12];
    FxU32 nccTable1[12];
    /* ----------- end packet -------------*/
    
#ifdef FX_GLIDE_NAPALM
#define OOOO_OOOO_OOOO_OOOI  0x0001
#define SR_MASK_7            OOOO_OOOO_OOOO_OOOI
    FxU32 texPkt4Hdr_3;

    FxU32 combineMode;
    /* ----------- end packet -------------*/
#endif /* FX_GLIDE_NAPALM */
  } tmuState[GLIDE_NUM_TMU];

  struct PaletteRow {
#define SR_WORDS_P       8
#define SR_ADDR_P        ((FxU32) &((( SstRegs* )0)->nccTable0[4]))
    FxU32 pkt1Hdr_P;

    FxU32 data[8];
    /* ----------- end packet -------------*/
  } paletteRow[32];

} GrStateBuffer;

/*==========================================================================*/
/*
** GrState
**
** This structure comprises the entire queryable state in Glide.
** 
** Two types of data qualify for inclusion here:
**
** API State  - cull-mode
** Chip State - hw register state
**
** Not included:
** any volatile data: eg fifo setup, colBufferAddr, etc
*/

typedef struct {
    FxU32 cull_mode;           /* cull neg, cull pos, don't cull   */
  
    FxU32 paramIndex;          /* Index into array containing
                                  parameter indeces to be sent ot the
                                  triangle setup code    */
#if GLIDE_INIT_HAL
    FxI32
     fifoFree;                 /* # free entries in FIFO */
#endif
    FxU32 tmuMask;             /* Tells the paramIndex updater which
                                  TMUs need values */
    FxU32 tcctmuMask;          /* Tells the paramIndex updater which
                                  TMUs need values - for tcc */
    FxU32 tactmuMask;          /* Tells the paramIndex updater which
                                  TMUs need values - for tac */
    FxU32 combineExtsInUse;    /* Tells us which combine extensions are
                                  in use by the application. */
    FxU32 tmuColorPassthrough; /* TMU color combine is in passthrough */
    FxU32 tmuAlphaPassthrough; /* TMU alpha combine is in passthrough */

    GrStateBuffer shadow;      /* shadow of all hw state registers */
    struct tmuState tmuShadow[GLIDE_NUM_TMU]; /* shadow of TMU registers */
    GrColor_t tmuColor[GLIDE_NUM_TMU]; /* Shadow of TMU constant color values */
    
    FxU32 tmuMaskShadow;       /* Intermediate tmuMask value before grValidateTMUState() */
    
    /* We run into a bad situation when the color buffer and aux
       buffers are not the same size.  Thus, we need to clip to the
       intersection of the two rectangles. */
    struct wClipping_s {        /* Windowed clipping */
      FxBool
        colBufferSet, auxBufferSet;
      struct colBufferClip_s {
        FxU32
          width, height;
      } colClip;
      struct auxBufferClip_s {
        FxU32
          width, height;
      } auxClip;
      struct winClip_s {
        FxU32 width, height;
      } winClip;
    } wClipping;

    struct PerTmuState {
        float s_scale;
        float t_scale;
        FxU32 mmMode;
        FxU32 smallLod;
        FxU32 largeLod;
        FxU32 evenOdd;
        FxU32 nccTable;
    } per_tmu[GLIDE_NUM_TMU];

  float depth_range;
  
  FxU32 tbufferMask;
  
    FxBool                       /* Values needed to determine which */
    ac_requires_it_alpha,      /*   parameters need gradients computed */
        ac_requires_texture,       /*   when drawing triangles      */
        cc_requires_it_rgb,
    cc_requires_texture,
    allowLODdither,            /* allow LOD dithering            */
    mode2ppc,
    mode2ppcTMU,
    checkFifo;                 /* Check fifo status as specified by hints */
  
  FxBool                       /* Values needed to determine which */
    tac_requires_it_alpha[GLIDE_NUM_TMU],      /*   parameters need gradients computed */
    tac_requires_texture[GLIDE_NUM_TMU],       /*   when drawing triangles      */
    tac_requires_prev_texture[GLIDE_NUM_TMU],
    tac_requires_constant_color[GLIDE_NUM_TMU],
    tcc_requires_it_alpha[GLIDE_NUM_TMU],
    tcc_requires_it_rgb[GLIDE_NUM_TMU],
    tcc_requires_texture[GLIDE_NUM_TMU],
    tcc_requires_prev_texture[GLIDE_NUM_TMU],  
    tcc_requires_constant_color[GLIDE_NUM_TMU],  
    palletizedTexture[GLIDE_NUM_TMU];

  FxU32
    lfb_constant_depth;        /* Constant value for depth buffer (LFBs) */
  GrAlpha_t
    lfb_constant_alpha;        /* Constant value for alpha buffer (LFBs) */
  
  FxU32
    num_buffers;               /* 2 or 3 */
  
  GrColorFormat_t
    color_format;              /* ARGB, RGBA, etc. */
  
  GrOriginLocation_t           /* lower left, upper left */
    origin;                     

  GrTexTable_t tex_table;      /* Current palette type - ncc vs palette */
  
  float
    clipwindowf_xmin, clipwindowf_ymin, /* Clipping info */
    clipwindowf_xmax, clipwindowf_ymax;
  FxU32
    screen_width, screen_height; /* Screen width and height */
  
  /* viewport and clip space coordinate related stuff */
  
  struct {
    float
      n, f;
    FxFloat
      ox, oy, oz;
    FxFloat
      hwidth, hheight, hdepth;
  } Viewport;
  
  
  /* Strip Stuff */
  GrVertexLayout vData;

  /*============================================================
  **  State Monster Stuff:
  **============================================================*/
  /*  
  **   The following DWORD is used to determine what state (if any) needs to
  **   be flushed when a rendering primative occurs.
  */
  FxU32
    invalid;
  /* invalid contains bits representing:
     alphaMode register:
        modified by grAlphaBlendFunction, grAlphaTestFunction,
        grAlphaTestReferenceValue  

     fbzColorPath register:
        modified by grAlphaCombine, grAlphaControlsITRGBLighting,
        grColorCombine

     fbzMode register:
        modified by grChromaKeyMode, grDepthBufferFunction,
        grDeptBufferMode, grDepthMask, grDitherMode, grRenderBuffer,
        grSstOrigin, grColorMask 

     chromaKey register:
        modified by grChromaKeyValue

     clipLeftRight, clipBottomTop registers:
        modified by grClipWindow

     zaColor register:
        modified by grDepthBiasLevel

     fogMode register:
        modified by grFogMode

     fogColor register:
        modified by grFocColorValue

     lfbMode register:
        modified by grLfbWriteColorFormat, grLfbWriteColorSwizzle 

     c0 & c1 registers:
        modified by grConstanColorValue
   */
  FxU32
    tmuInvalid[GLIDE_NUM_TMU];
  FxU32
    tmuNop;

  /*
  **  Argument storage for State Monster:
  **
  **  NOTE that the data structure element names are IDENTICAL to the function
  **  argment names.  This is very important, as there are macros in distate.c
  **  that require that.
  */
  struct {
    struct {
      GrAlphaBlendFnc_t rgb_sf;
      GrAlphaBlendFnc_t rgb_df;
      GrAlphaBlendFnc_t alpha_sf;
      GrAlphaBlendFnc_t alpha_df;
      GrAlphaBlendOp_t rgb_op;
      GrAlphaBlendOp_t alpha_op;
    } grAlphaBlendFunctionArgs;
    struct {
      GrCmpFnc_t fnc;
    } grAlphaTestFunctionArgs;
    struct {
      GrAlpha_t value;
    } grAlphaTestReferenceValueArgs; 
    struct {
      GrCombineFunction_t function;
      GrCombineFactor_t factor;
      GrCombineLocal_t local;
      GrCombineOther_t other;
      FxBool invert;
    } grAlphaCombineArgs;
    struct {
      FxBool enable;
    } grAlphaControlsITRGBLightingArgs;
    struct {
      GrCombineFunction_t function;
      GrCombineFactor_t factor;
      GrCombineLocal_t local;
      GrCombineOther_t other;
      FxBool invert;
    } grColorCombineArgs;
    struct {
      FxBool rgb;
      FxI32  alpha;
    } grColorMaskArgs;
    struct {
      FxBool enable;
    } grDepthMaskArgs;
    struct {
      GrChromakeyMode_t mode;
    } grChromakeyModeArgs;
    struct {
      GrColor_t color;
    } grChromakeyValueArgs;
    struct {
      GrColor_t range;
      GrChromaRangeMode_t mode;
      GrChromaRangeMode_t match_mode;
    } grChromaRangeArgs;
    struct {
      GrCmpFnc_t fnc;
    } grDepthBufferFunctionArgs;
    struct {
      GrDepthBufferMode_t mode;
    } grDepthBufferModeArgs;
    struct {
      GrDitherMode_t mode;
    } grDitherModeArgs;
    struct {
      GrBuffer_t buffer;
    } grRenderBufferArgs;
    struct {
      GrOriginLocation_t origin;
    } grSstOriginArgs;
    struct {
      FxU32 minx;
      FxU32 miny;
      FxU32 maxx;
      FxU32 maxy;
    } grClipWindowArgs;
    struct {
      FxU32 level;
    } grDepthBiasLevelArgs;
    struct {
      GrFogMode_t mode;
    } grFogModeArgs;
    struct {
      GrColor_t color;
    } grFogColorValueArgs;
    struct {
      GrColorFormat_t colorFormat;
    } grLfbWriteColorFormatArgs;
    struct {
      FxBool swizzleBytes;
      FxBool swapWords;
    } grLfbWriteColorSwizzleArgs;
    struct {
      GrColor_t color;
    } grConstantColorValueArgs;
    struct {
      GrCmpFnc_t fnc;
      GrStencil_t ref;
      GrStencil_t mask;
    } grStencilFuncArgs;
    struct {
      GrStencil_t value;
    } grStencilMaskArgs;
    struct {
      GrStencil_t value;
    } grLfbConstantStencilArgs;
    struct {
      GrStencilOp_t stencil_fail;
      GrStencilOp_t depth_fail;
      GrStencilOp_t depth_pass;
    } grStencilOpArgs;
    struct {
      GrCCUColor_t      a;
      GrCombineMode_t   a_mode;
      GrCCUColor_t      b;
      GrCombineMode_t   b_mode;
      GrCCUColor_t      c;
      FxBool            c_invert;
      GrCCUColor_t      d;
      FxBool            d_invert;
      FxU32             shift;
      FxBool            invert;
    } grColorCombineExtArgs;
    struct {
      GrACUColor_t      a;
      GrCombineMode_t   a_mode;
      GrACUColor_t      b;
      GrCombineMode_t   b_mode;
      GrACUColor_t      c;
      FxBool            c_invert;
      GrACUColor_t      d;
      FxBool            d_invert;
      FxU32             shift;
      FxBool            invert;
    } grAlphaCombineExtArgs;
    struct {
      GrCombineFunction_t rgb_function[GLIDE_NUM_TMU];
      GrCombineFactor_t   rgb_factor[GLIDE_NUM_TMU];
      GrCombineFunction_t alpha_function[GLIDE_NUM_TMU];
      GrCombineFactor_t   alpha_factor[GLIDE_NUM_TMU];
      FxBool              rgb_invert[GLIDE_NUM_TMU];
      FxBool              alpha_invert[GLIDE_NUM_TMU];
    } grTexCombineArgs;
    struct {
      GrTCCUColor_t     a[GLIDE_NUM_TMU];
      GrCombineMode_t   a_mode[GLIDE_NUM_TMU];
      GrTCCUColor_t     b[GLIDE_NUM_TMU];
      GrCombineMode_t   b_mode[GLIDE_NUM_TMU];
      GrTCCUColor_t     c[GLIDE_NUM_TMU];
      FxBool            c_invert[GLIDE_NUM_TMU];
      GrTCCUColor_t     d[GLIDE_NUM_TMU];
      FxBool            d_invert[GLIDE_NUM_TMU];
      FxU32             shift[GLIDE_NUM_TMU];
      FxBool            invert[GLIDE_NUM_TMU];
    } grTexColorCombineExtArgs;
    struct {
      GrTACUColor_t     a[GLIDE_NUM_TMU];
      GrCombineMode_t   a_mode[GLIDE_NUM_TMU];
      GrTACUColor_t     b[GLIDE_NUM_TMU];
      GrCombineMode_t   b_mode[GLIDE_NUM_TMU];
      GrTACUColor_t     c[GLIDE_NUM_TMU];
      FxBool            c_invert[GLIDE_NUM_TMU];
      GrTACUColor_t     d[GLIDE_NUM_TMU];
      FxBool            d_invert[GLIDE_NUM_TMU];
      FxU32             shift[GLIDE_NUM_TMU];
      FxBool            invert[GLIDE_NUM_TMU];
    } grTexAlphaCombineExtArgs;
    struct {
      GrColor_t         value ;
    } grConstantColorValueExtArgs ;
    struct {
      FxBool r;
      FxBool g;
      FxBool b;
      FxBool a;
    } grColorMaskExtArgs;
  } stateArgs;
  struct{
    GrEnableMode_t primitive_smooth_mode;
    GrEnableMode_t shameless_plug_mode;
    GrEnableMode_t video_smooth_mode;
    GrEnableMode_t texture_uma_mode;
    GrEnableMode_t combine_ext_mode;
    GrEnableMode_t stencil_mode;
  } grEnableArgs;
  struct{
    GrCoordinateSpaceMode_t coordinate_space_mode;
  } grCoordinateSpaceArgs;
} GrState;

/*
**  Private GR_GET enumerants:
*/
#define GR_MEMTYPE      GR_GET_RESERVED_1


/* gpci.c 
 *
 * Set of procs for the current cpu type. These are selected out of
 * the _archXXXX proc list that is selected at grGlideInit time.
 */

#ifndef __linux__
typedef FxI32 (FX_CALL* GrTriSetupProc)(const void *a, const void *b, const void *c);
#else   /* defined(__linux__) */
typedef FxI32 (FX_CALL* GrTriSetupProc)(const void *g, const void *a, const void *b, const void *c);
#endif  /* defined(__linux__) */

typedef void  (FX_CALL* GrVertexListProc)(FxU32 pkType, FxU32 type, FxI32 mode, FxI32 count, void* ptrs);
typedef void  (FX_CALL* GrDrawTrianglesProc)(FxI32 mode, FxI32 count, void* vPtrs);

/* [grState valid bit][cull/no cull mode] */
typedef GrTriSetupProc GrTriSetupProcVector[2][2];

/* [Coordinate mode - window/clip] */
typedef GrTriSetupProcVector GrTriSetupProcArchVector[2];

/* Decalrations of the dispatchable procs found in xdraw2.asm and
 * xtexdl.c for teh triangle and texture download procs respectively.  
 *
 * NB: These procs have the special calling convention that the current
 *     gc is nabbed from tls and passed in edx. Screw w/ this at your
 *     own peril. You have been warned.
 */
extern FxI32 FX_CALL _trisetup_Default_win_cull_invalid(const void*, const void*, const void*);
extern FxI32 FX_CALL _trisetup_Default_win_cull_valid(const void*, const void*, const void*);
extern FxI32 FX_CALL _trisetup_Default_win_nocull_invalid(const void*, const void*, const void*);
extern FxI32 FX_CALL _trisetup_Default_win_nocull_valid(const void*, const void*, const void*);

/* Only one specialziation exists so far */
extern FxI32 FX_CALL _vptrisetup_cull(const void*, const void*, const void*);

/* Routine to call into the architecture specialized version of 
 * _grDrawTriangles if there is no specialized version of the
 * grDrawTriangle routine for clip coordinates.
 */
extern FxI32 FX_CALL _trisetup_clip_coor_thunk(const void*, const void*, const void*);

extern void FX_CALL _grDrawTriangles_Default(FxI32, FxI32, void*);

void FX_CSTYLE _drawvertexlist(FxU32 pktype, FxU32 type, FxI32 mode, FxI32 count, void *pointers);
void FX_CSTYLE _vpdrawvertexlist(FxU32 pktype, FxU32 type, FxI32 mode, FxI32 count, void *pointers);

#if GL_AMD3D
extern FxI32 FX_CALL _trisetup_3DNow_win_cull_invalid(const void*, const void*, const void*);
extern FxI32 FX_CALL _trisetup_3DNow_win_cull_valid(const void*, const void*, const void*);
extern FxI32 FX_CALL _trisetup_3DNow_win_nocull_invalid(const void*, const void*, const void*);
extern FxI32 FX_CALL _trisetup_3DNow_win_nocull_valid(const void*, const void*, const void*);

extern FxI32 FX_CALL _trisetup_3DNow_clip_cull_invalid(const void*, const void*, const void*);
extern FxI32 FX_CALL _trisetup_3DNow_clip_cull_valid(const void*, const void*, const void*);
extern FxI32 FX_CALL _trisetup_3DNow_clip_nocull_invalid(const void*, const void*, const void*);
extern FxI32 FX_CALL _trisetup_3DNow_clip_nocull_valid(const void*, const void*, const void*);

extern void FX_CALL _grDrawTriangles_3DNow(FxI32, FxI32, void*);
void FX_CSTYLE _grDrawVertexList_3DNow_Window(FxU32 pktype, FxU32 type, FxI32 mode, FxI32 count, void *pointers);
void FX_CSTYLE _grDrawVertexList_3DNow_Clip(FxU32 pktype, FxU32 type, FxI32 mode, FxI32 count, void *pointers);
#endif /* GL_AMD3D */

#ifdef __linux__
/* Define this structure otherwise it assumes the structure only exists
   within the function */
struct GrGC_s;
#endif	/* defined(__linux__) */

/* _GlideRoot.curTexProcs is an array of (possibly specialized)
 * function pointers indexed by texture format size (8/16 bits for
 * pre-Napalm, 4/8/16/32 for Napalm) and texture line width (1/2/4/>4).
 *
 * xtexdl.c
 */
typedef void  (FX_CALL* GrTexDownloadProc)(struct GrGC_s* gc,
                                           const FxU32 tmuBaseAddr,
                                           const FxI32 maxS,
                                           const FxI32 minT,
                                           const FxI32 maxT,
                                           void* texData);
typedef GrTexDownloadProc GrTexDownloadProcVector[4][5];

extern void FX_CALL _grTexDownload_Default_4_8(struct GrGC_s* gc,
                                               const FxU32 tmuBaseAddr,
                                               const FxI32 maxS,
                                               const FxI32 minT,
                                               const FxI32 maxT,
                                               void* texData);
extern void FX_CALL _grTexDownload_Default_4_WideS(struct GrGC_s* gc,
                                                   const FxU32 tmuBaseAddr,
                                                   const FxI32 maxS,
                                                   const FxI32 minT,
                                                   const FxI32 maxT,
                                                   void* texData);

extern void FX_CALL _grTexDownload_Default_8_1(struct GrGC_s* gc,
                                               const FxU32 tmuBaseAddr,
                                               const FxI32 maxS,
                                               const FxI32 minT,
                                               const FxI32 maxT,
                                               void* texData);
extern void FX_CALL _grTexDownload_Default_8_2(struct GrGC_s* gc,
                                               const FxU32 tmuBaseAddr,
                                               const FxI32 maxS,
                                               const FxI32 minT,
                                               const FxI32 maxT,
                                               void* texData);
extern void FX_CALL _grTexDownload_Default_8_4(struct GrGC_s* gc,
                                               const FxU32 tmuBaseAddr,
                                               const FxI32 maxS,
                                               const FxI32 minT,
                                               const FxI32 maxT,
                                               void* texData);
extern void FX_CALL _grTexDownload_Default_8_WideS(struct GrGC_s* gc,
                                                   const FxU32 tmuBaseAddr,
                                                   const FxI32 maxS,
                                                   const FxI32 minT,
                                                   const FxI32 maxT,
                                                   void* texData);

extern void FX_CALL _grTexDownload_Default_16_1(struct GrGC_s* gc,
                                                const FxU32 tmuBaseAddr,
                                                const FxI32 maxS,
                                                const FxI32 minT,
                                                const FxI32 maxT,
                                                void* texData);
extern void FX_CALL _grTexDownload_Default_16_2(struct GrGC_s* gc,
                                                const FxU32 tmuBaseAddr,
                                                const FxI32 maxS,
                                                const FxI32 minT,
                                                const FxI32 maxT,
                                                void* texData);
extern void FX_CALL _grTexDownload_Default_16_4(struct GrGC_s* gc,
                                                const FxU32 tmuBaseAddr,
                                                const FxI32 maxS,
                                                const FxI32 minT,
                                                const FxI32 maxT,
                                                void* texData);
extern void FX_CALL _grTexDownload_Default_16_WideS(struct GrGC_s* gc,
                                                    const FxU32 tmuBaseAddr,
                                                    const FxI32 maxS,
                                                    const FxI32 minT,
                                                    const FxI32 maxT,
                                                void* texData);

extern void FX_CALL _grTexDownload_Default_32_1(struct GrGC_s* gc,
                                                const FxU32 tmuBaseAddr,
                                                const FxI32 maxS,
                                                const FxI32 minT,
                                                const FxI32 maxT,
                                                void* texData);
extern void FX_CALL _grTexDownload_Default_32_WideS(struct GrGC_s* gc,
                                                    const FxU32 tmuBaseAddr,
                                                    const FxI32 maxS,
                                                    const FxI32 minT,
                                                    const FxI32 maxT,
                                                    void* texData);

#if GL_AMD3D
/* xtexdl.asm */
extern void FX_CALL _grTexDownload_3DNow_MMX(struct GrGC_s* gc,
                                             const FxU32 tmuBaseAddr,
                                             const FxI32 maxS,
                                             const FxI32 minT,
                                             const FxI32 maxT,
                                             void* texData);
#endif /* GL_AMD3D */

typedef struct GrGC_s
{
  struct {
    FxU32       bufferSwaps;    /* number of buffer swaps       */
    FxU32       pointsDrawn;
    FxU32       linesDrawn;
    FxU32       trisProcessed;
    FxU32       trisDrawn;
    FxU32       othertrisDrawn;

    FxU32       texDownloads;   /* number of texDownload calls   */
    FxU32       texBytes;       /* number of texture bytes downloaded   */

    FxU32       palDownloads;   /* number of palette download calls     */
    FxU32       palBytes;       /* number of palette bytes downloaded   */

    FxU32       nccDownloads;   /* # of NCC palette download calls */
    FxU32       nccBytes;       /* # of NCC palette bytes downloaded */

#if USE_PACKET_FIFO
    FxU32       fifoWraps;
    FxU32       fifoWrapDepth;
    FxU32       fifoStalls;
    FxU32       fifoStallDepth;
#endif /* USE_PACKET_FIFO */
  } stats;

  struct {
    float  ftemp1, ftemp2;       /* temps to convert floats to ints */
  } pool;

#if GLIDE_HW_TRI_SETUP
  FxI32 curVertexSize;          /* Size in bytes of a single vertex's parameters */
#endif

  FxI32 curTriSize;             /* the size in bytes of the current triangle */

  FxU32
    orgSW, orgSH;               /* Original Screen width & Height */
  FxU32
    totBuffers,
    strideInTiles,
    heightInTiles,
    bufferStride,
    bufSizeInTiles,
    bufSize,
    fbOffset,
    *base_ptr,                  /* base address of SST */
    *reg_ptr,                   /* pointer to base of SST registers */
    *tex_ptr,                   /* texture memory address */
    *lfb_ptr;                   /* linear frame buffer address */

  FxU32 is_master;
  FxU32 chipCount;
  FxU32 sliCount;
  FxU32 sliBandHeight;

#ifdef HAL_CSIM
  HalInfo *halInfo;
#endif

  struct GrTmuMemInfo {
    /* Information for keeping track of the characteristics of the
     * memory 'surfaces'. (We use 'surfaces' here not in the surface
     * extension sense, but in the region sense).
     *
     * xxxTiled:  Is this logical memory location in a tiled region?
     * xxxStride: The stride to the next logical 'line' in a given 
     *            region. This is in the units based on the respective
     *            xxxTiled field.
     */
    FxU32
      tramOffset,
      tramSize,
      tramLfbAddr;
    FxU32
      texStrideTiles,
      texStrideBytes;
    FxBool
      texTiled;

    /* Information about how to flush the textures and an
     * downloads from any internal hw fifos.  
     *
     *  flushCount: If > 0 then the flush operations should be 
     *              performed using the pre/post flush packets. 
     *              This should initially be set to 1 in the hw
     *              init stuff and then will be decremented in
     *              the multiple level downloads so the lower
     *              levels know not to worry about the flush.
     *  xxxPacket:  The actual packet data need to flush the
     *              textures and internal pixel fifo's
     *    pre:
     *      pkt1 header: wax command
     *        command = nop | go
     *    post:
     *      pkt1 header: texBaseAddr
     *        ~user texBaseAddr
     *      pkt1 header: nopCMD
     *        0
     *      pkt1 header: texBaseAddr
     *        user texBaseAddr
     *      pkt1 header: wax command
     *        command = nop | go
     */

#if USE_PACKET_FIFO
#  define GR_TEX_FLUSH_WRITE(__writeCount, __writeData) \
    if (gc->contextP) { \
      GR_SET_EXPECTED_SIZE((__writeCount) * sizeof(FxU32), 0); \
      { \
        FxU32 \
          *curFifoPtr = gc->cmdTransportInfo.fifoPtr, \
          *curPktData = __writeData, \
          i; \
        for(i = 0; i < (__writeCount); i++) { \
          SET_FIFO(*curFifoPtr++, *curPktData++); \
        } \
        GR_INC_SIZE((__writeCount) * sizeof(FxU32)); \
        gc->cmdTransportInfo.fifoRoom -= ((FxU32)curFifoPtr - (FxU32)gc->cmdTransportInfo.fifoPtr); \
        gc->cmdTransportInfo.fifoPtr = curFifoPtr; \
      } \
      GR_CHECK_SIZE(); \
   }

#  define TEX_FLUSH_COUNT_PRE  2
#  define TEX_FLUSH_COUNT_POST 8

#  define GR_TEX_FLUSH_PRE(__tmuMemInfo) \
    do { \
      if ((__tmuMemInfo)->flushCount > 0) { \
        GR_TEX_FLUSH_WRITE(TEX_FLUSH_COUNT_PRE, (__tmuMemInfo)->prePacket); \
      } \
      (__tmuMemInfo)->flushCount--; \
    } while(0)
#  define GR_TEX_FLUSH_POST(__tmuMemInfo) \
    do { \
      (__tmuMemInfo)->flushCount++; \
      if ((__tmuMemInfo)->flushCount > 0) { \
        GR_TEX_FLUSH_WRITE(TEX_FLUSH_COUNT_POST, (__tmuMemInfo)->postPacket); \
      } \
    } while(0)
#else /* !USE_PACKET_FIFO */
    /* temp defs */
#  define TEX_FLUSH_COUNT_PRE  2
#  define TEX_FLUSH_COUNT_POST 8
#  define GR_TEX_FLUSH_PRE(__tmuMemInfo)
#  define GR_TEX_FLUSH_POST(__tmuMemInfo)
#endif /* !USE_PACKET_FIFO */

    FxI32
      flushCount;
    FxU32
      prePacket[TEX_FLUSH_COUNT_PRE],
      postPacket[TEX_FLUSH_COUNT_POST];
  } tmuMemInfo[GLIDE_NUM_TMU];
  
  hwcBoardInfo
    *bInfo;
#ifdef GLIDE_INIT_HWC
  FxU32
    winContextId;
#endif

#if GLIDE_MULTIPLATFORM
  GrGCFuncs
    gcFuncs;
#endif  

#define kMaxVertexParam (20 + (12 * GLIDE_NUM_TMU) + 3)
#if !GLIDE_HW_TRI_SETUP || !GLIDE_PACKET3_TRI_SETUP
  struct dataList_s {
    int      i;
    FxFloat* addr;
  } regDataList[kMaxVertexParam];
  int tsuDataList[kMaxVertexParam];
#else
  int tsuDataList[kMaxVertexParam];
#endif
#ifdef GLIDE3_SCALER
  int tsuDataListScaler[kMaxVertexParam];
#endif

  GrState
    state;                      /* state of Glide/SST */

  /* Here beginneth the Swap Pending Workaround (tm) */
#define MAX_BUFF_PENDING        0x7
  FxU32
    swapsPending,               /* swaps in unexecuted region of FIFO */
    lastSwapCheck,              /* Position at last check */
    curSwap,                    /* Position in the array below */
    bufferSwaps[MAX_BUFF_PENDING];/* Position in FIFO of buffer swaps */
  /* Here endeth the Swap Pending Workaround */

  struct {
    /* Current triangle rendering proc specialized for culling/no
     * culling and viewport/window coordinates.
     */
    GrTriSetupProc      triSetupProc;
    GrDrawTrianglesProc drawTrianglesProc;
    GrVertexListProc    drawVertexList;
    
    /* Vector to choose triangle rendering proc from based on the
     * cull/no-cull mode and whether or not the state is valid. This
     * vector is specialized on viewport vs window coordinates.  
     */
    GrTriSetupProcVector* coorModeTriVector;
    
    /* Vector of texture download procs specialized by size
     * and processor vendor type.
     */
    GrTexDownloadProcVector* texDownloadProcs;
  } archDispatchProcs;

  /* NB: This structure is exported via the COMMAND_TRANSPORT
   * extension which is shared w/ cvg glide3 as well. Care must be
   * taken to make the structures compatible and to inform the OpenGL
   * team (the only users of the extension) of any changes.  
   */
  struct cmdTransportInfo {
    FxU32  triPacketHdr; /* Pre-computed packet header for
                          * independent triangles. 
                          */
    
    FxU32  cullStripHdr; /* Pre-computed packet header for generic
                          * case of packet 3 triangles. This needs
                          * command type and # of vertices to be complete.
                          */
    
    FxU32  paramMask;    /* Mask for specifying parameters of
                          * non-triangle packets.  The parameter
                          * bits[21:10] mimic the packet3 header
                          * controlling which fields are sent, and
                          * pc[28] controls whether any color
                          * information is sent as packed.
                          */
    
    FxU32* fifoPtr;      /* Current write pointer into fifo */
    FxU32  fifoRead;     /* Last known hw read ptr. 
                          * If on an sli enabled system this will be
                          * the 'closest' hw read ptr of the sli
                          * master and slave.
                          */
    
    /* Fifo checking information. In units of usuable bytes until
     * the appropriate condition.
     */
    FxI32  fifoRoom;     /* Space until next fifo check */

    FxBool autoBump;     /* Are we auto bumping (aka hole counting?) */
    FxU32
      *lastBump,         /* Last ptr where we bumped. */
      *bumpPos;          /* Next place to bump */
    FxU32
      bumpSize;          /* # of DWORDS per bump */

    FxU32 **ptrLostContext;

    /* Internal bookkeeping information - Everything after this point
     * is not exposed via the COMMAND_TRANSPORT extension 
     */

    /* Basic command fifo characteristics. These should be
     * considered logically const after their initialization.
     */
    FxU32* fifoStart;    /* Virtual address of start of fifo */
    FxU32* fifoEnd;      /* Virtual address of fba fifo */
    FxU32  fifoOffset;   /* Offset from hw base to fifo start */
    FxU32  fifoSize;     /* Size in bytes of the fifo */
    FxU32  fifoJmpHdr[2];/* Type0 packet for jmp to fifo start
                          * only first DWORD is used for memory
                          * fifo--both are used for AGP FIFO
                          */

    /* NB: These are only valid for the fullscreen case 
     */
    FxI32  roomToReadPtr;/* Bytes until last known hw ptr */
    FxI32  roomToEnd;    /* # of bytes until last usable address before fifoEnd */

    FxBool lfbLockCount; /* Have we done an lfb lock? Count of the locks. */

#if GLIDE_INIT_HWC
    GrStateBuffer* 
      stateBuffer;
    HwcWinFifo
      hwcFifoInfo;
    FxU32
      numCommandBuf,      /* # of command buffers */
      curCommandBuf,      /* Current command buffer waiting to issue */
      numQueuedBuf,       /* # of command buffers waiting to issue */
      serialNumber,       /* Current serial # */
      issuedSerialNumber, /* Last issued command buffer # */
      committedSerialNumber; /* Last known committed buffer */
    /* This is the backing store that gets used if we are not abled to
     * allocate surface storage for the fifo information.  
     */
    /* <=32k bytes -- don't want segment overflow in 16-bit driver*/
#define WINDOW_FIFO_SIZE_IN_DWORDS 0x2000
    FxU32         
      windowedFifo[WINDOW_FIFO_SIZE_IN_DWORDS];
    GrStateBuffer 
      windowedState;
#endif /* GLIDE_INIT_HWC */
    FxU32
      *lastFence;               /* Either beginning of the fifo (at
                                   start or after a wrap), or the last
                                   place we fenced.  Fencing must
                                   occur every 64K writes. */

  } cmdTransportInfo;
#ifndef	__linux__
  FxI32 (FX_CALL *triSetupProc)(const void *a, const void *b, const void *c);
#else	/* defined(__linux__) */
  FxI32 (FX_CALL *triSetupProc)(const void *g, const void *a, const void *b, const void *c);
#endif	/* defined(__linux__) */
  
  SstIORegs
    *ioRegs;                    /* I/O remap regs */
  SstCRegs
    *cRegs;                     /* AGP/Cmd xfer/misc regs */
  SstGRegs
    *gRegs;                     /* 2D regs */
  SstRegs
    *sstRegs;                   /* Graphics Regs (3D Regs) */
  SstRegs
    *slaveSstRegs[3] ;          /* AJB - ptrs to slave chips */
  SstCRegs
    *slaveCRegs[3] ;            /* AJB - ptrs to slave chips cmd regs */
  FxU32
    *rawLfb,
    nBuffers,
    curBuffer,
    frontBuffer,
    backBuffer,
    buffers0[4],
    buffers1[4],
    lfbBuffers[4];              /* Tile relative addresses of the color/aux
                                 * buffers for lfbReads.
                                 */  
  FxU32 lockPtrs[2];        /* pointers to locked buffers */
  FxU32 fbStride;

  FxBool colTiled,            // AJB - grBufferClear needs to know when target surfaces
         auxTiled ;           //       are linear in windowed & fullscreen glide.

  /* TextureBuffer extension
  ** Used for Rendering into a Texture.
  ** tbext
  */
  struct {
    FxBool  init;
    FxBool  on;
    FxU32   addr;
    FxI32   stride;
    FxU32   width, height;
    struct {
      FxBool    valid;
      float     cwMinx, cwMiny, cwMaxx, cwMaxy; /* ClipWindow Min/Max */
      FxU32     clipLeftRight, clipBottomTop;
    } prevState;
  } textureBuffer;

  /* tbext. TODO: remove the prevState member? */
  struct {
    FxBool  init;
    FxBool  on;
    FxU32   addr;
    FxI32   stride;
    FxU32   width, height;
    struct {
      FxBool    valid;
      float     cwMinx, cwMiny, cwMaxx, cwMaxy; /* ClipWindow Min/Max */
      FxU32     clipLeftRight, clipBottomTop;
    } prevState;
  } textureAuxBuffer;           

  struct {
    FxU32             freemem_base;
    FxU32             total_mem;
    FxU32             next_ncc_table;
    GrMipMapId_t      ncc_mmids[2];
    const GuNccTable *ncc_table[2];
  } tmu_state[GLIDE_NUM_TMU];

  int
    grSstRez,                   /* Video Resolution of board */
    grSstRefresh,               /* Video Refresh of board */
    fbuf_size,                  /* in MB */
    num_tmu,                    /* number of TMUs attached */
    grColBuf,
    grAuxBuf,
    grHwnd;

  int grPixelFormat;            /* Specific pixel format */
  int grPixelSample;            /* Total number of AA samples */
  int grPixelSize;              /* Pixel size in bytes */
  int grSamplesPerChip;         /* Numbef of AA samples per chip */
  int sampleOffsetIndex;        /* Which index do we use for AA offsets? */
  int enableSecondaryBuffer;    /* Whether or not secondary AA buffer is in use. */

  FxBool do2ppc;
  FxU32 chipmask;
  FxU32 stencilCleared;

#ifndef GLIDE3_ALPHA
  struct {
    GrMipMapInfo data[MAX_MIPMAPS_PER_SST];
    GrMipMapId_t free_mmid;
  } mm_table;                   /* mip map table */
#endif

  FxBool tmuLodDisable[GLIDE_NUM_TMU];

  /* DEBUG and SANITY variables */
  FxI32 myLevel;                /* debug level */
  FxI32 counter;                /* counts bytes sent to HW */
  FxI32 expected_counter;       /* the number of bytes expected to be sent */

  FxU32 checkCounter;
  FxU32 checkPtr;
   
  FxVideoTimingInfo* vidTimings;/* init code overrides */

  /* Has GC Been Opened? 
   *
   * NB: The following fields are similar, but subtly different.
   * Make sure that you keep their meanings differentiated when 
   * messing w/ their values because various internacl bits of glide
   * make various assumptions about their values.
   *
   * hwInitP: Is the hw mapping active? Some OS's (notably NT) require
   * that the driver keep track of mappings on a per process
   * basis. This flag indicates whether or not glide thinks that it
   * has a mapping allocated w/ the driver via hwcMapBoard. This is
   * only meaningful for a fullscreen application. 
   *
   * %%KCD: hwInitP is inherently broken for apps that switch back
   *        and forth between fullscreen and windowed, since different
   *        GC's are used in those cases, which means the hwInitP flag
   *        won't carry over.  So, hwcBoardInfo now has an isMapped
   *        flag that keeps track of whether a given board is mapped or
   *        not, so it can be kept track of the right way.
   * 
   * open: Does the application have an fullscreen context open.
   *   Fullscreen: grSstWinOpen/grSstWinClose
   *   Surface Extension: grSurfaceCreateContext/grSurfaceReleaseContext 
   *
   * contextP: This indicates whether glide thinks that its fsem
   * context is still valid. This can become false if the app looses
   * its context due to some os interaction (alt-tab on win32
   * platforns), but this does not affect the state of gc->open.  
   */
  FxBool 
   /* hwInitP, */
    open,
    contextP;  

  FxU32 *
    lostContext;

  FxBool auxRendering;          /* Is an aux rendering surface current? */
  FxBool windowed;              /* is this a fullscreen or windowed gc */

#ifdef GLIDE_INIT_HWC
  hwcBufferDesc
    tBuffer,                    /* Texture Buuffer */
    *arBuffer;                  /* Aux Rendering Buffer */
  GrSurface_t
    curSurface,                 /* Current rendering surface */
    auxSurface,                 /* Aux buffer surface */
    texSurface[GLIDE_NUM_TMU];  /* Current texture surface */
#endif /* GLIDE_INIT_HWC */

#if (GLIDE_PLATFORM & GLIDE_OS_WIN32)
  /* Splash screen/shameless plug crap */
  struct {
    HMODULE
      moduleHandle;
    GrSplashInitProc
      initProc;
    GrSplashShutdownProc
      shutdownProc;
    GrSplashProc
      splashProc;
    GrSplashPlugProc
      plugProc;
  } pluginInfo;
#endif /* (GLIDE_PLATFORM & GLIDE_OS_WIN32) */
} GrGC;


/*
**  The Root Of All EVIL!
**
**  The root of all Glide data, all global data is in here
**  stuff near the top is accessed a lot
*/
struct _GlideRoot_s {
  int p6Fencer;                 /* xchg to here to keep this in cache!!! */
  FxU32
    tlsIndex,
    tlsOffset;

  int current_sst;
  FxU32
    CPUType;
  FxBool
    OSWin95;
  FxI32
    windowsInit;        /* Is the fullscreen part of glide initialized? */


#if !GLIDE_HW_TRI_SETUP || !GLIDE_PACKET3_TRI_SETUP
  FxU32 paramCount;
  FxI32 curTriSizeNoGradient;   /* special for _trisetup_nogradients */
  FxI32 curTriSize;             /* the size in bytes of the current triangle */
#endif /* !GLIDE_HW_TRI_SETUP || !GLIDE_PACKET3_TRI_SETUP */

#if GLIDE_MULTIPLATFORM
  GrGCFuncs
    curGCFuncs;                 /* Current dd Function pointer table */
#endif
  int initialized;

  struct {                      /* constant pool (minimizes cache misses) */
    float  f0;
    float  fHalf;
    float  f1;
    float  f255;

#if GLIDE_PACKED_RGB
#define kPackBiasA _GlideRoot.pool.fBiasHi
#define kPackBiasR _GlideRoot.pool.fBiasHi
#define kPackBiasG _GlideRoot.pool.fBiasHi
#define kPackBiasB _GlideRoot.pool.fBiasLo

#define kPackShiftA 16UL
#define kPackShiftR 8UL
#define kPackShiftG 0UL
#define kPackShiftB 0UL

#define kPackMaskA  0x00FF00UL
#define kPackMaskR  0x00FF00UL
#define kPackMaskG  0x00FF00UL
#define kPackMaskB  0x00FFUL

    float  fBiasHi;
    float  fBiasLo;
#endif /* GLIDE_PACKED_RGB */
  } pool;

  struct {                      /* environment data             */
    FxBool ignoreReopen;
    FxBool triBoundsCheck;      /* check triangle bounds        */
    FxBool noSplash;            /* don't draw it                */
    FxU32  fifoSize;            /* specifies fifo size in windowed glide mode */
    FxBool shamelessPlug;       /* translucent 3Dfx logo in lower right */
    FxI32  swapInterval;        /* swapinterval override        */
    FxI32  swFifoLWM;
    FxU32  snapshot;            /* register trace snapshot      */
    FxBool disableDitherSub;    /* Turn off dither subtraction? */
    FxBool texLodDither;        /* Always do lod-dithering      */
    FxI32  tmuMemory;           /* tmuMemory */
    float  gammaR, gammaG, gammaB; /* Gamma settings */
    FxBool guardbandclipping;   /* enable gbc */
    FxI32  do2ppc;              /* enable 2ppc */
    FxU32  band2ppc;            /* 2ppc band */
    FxU32  sliBandHeight;       /* sli band height */
    FxI32  swapPendingCount;    /* pending buffer swap count    */
    FxI32  forceOldAA;          /* Force AA to use SLI when possible */
    FxI32  waxon ;              /* Enable use of WAX */
    FxU32  aaToggleKey;         /* Raw Key code for AA toggle */
    FxU32  aaScreenshotKey;         /* Raw Key code for AA toggle */
    FxI32  analogSli ;          /* force digital or analog sli */
    FxI32  lodBias;             /* User-adjustable lod bias value (signed) */
    FxU32  sliBandHeightForce;  /* Force user-specified band height */
    FxU32  noHW;                /* Disable HW writes */

    /* Force alternate buffer strategy */
    FxI32  nColorBuffer;
    FxI32  nAuxBuffer;
    FxBool autoBump;            /* Auto bump or do it manually? */
    FxU32  bumpSize;

    FxU32  forceSingleChip ;    /* force off SLI */
    FxU32  outputBpp ;          /* force 16/32bpp rendering */
    FxU32  aaSample ;           /* force 2/4 sample anti-aliasing */

    FxU32  columnWidth;         /* 'n' in columns of n */

    /* Anti-aliasing default perturbation values */
    FxU32  aaXOffset[4][4];
    FxU32  aaYOffset[4][4];
    /* Limit number of writes between fences */
    FxI32  fenceLimit;
  } environment;

  GrHwConfiguration     hwConfig;
  
  GrGC                  GCs[MAX_NUM_SST];       /* one GC per board     */
  GrGC                  surfaceGCs[MAX_NUM_CONTEXTS];
  GrGC                  *surfaceGCHeap[MAX_NUM_CONTEXTS];

  struct {
    GrTriSetupProcArchVector* curTriProcs;
    GrDrawTrianglesProc       curDrawTrisProc;
    GrVertexListProc*         curVertexListProcs;
    GrTexDownloadProcVector*  curTexProcs;
  
#define PROC_SELECT_TRISETUP(__procVector, __cullMode) (__procVector)[(__cullMode) != GR_CULL_DISABLE]
#define PROC_SELECT_TEXDOWNLOAD()                      _GlideRoot.curTexProcs

    GrTriSetupProcArchVector* nullTriProcs;
    GrDrawTrianglesProc       nullDrawTrisProc;
    GrVertexListProc*         nullVertexListProcs;
    GrTexDownloadProcVector*  nullTexProcs;    
  } deviceArchProcs;
};

extern struct _GlideRoot_s GR_CDECL _GlideRoot;
#if GLIDE_MULTIPLATFORM
extern GrGCFuncs _curGCFuncs;
#endif

#if defined( __MSC__ )
/* Turn off the no return value warning for the function definition.
 *
 * NB: The function returns a value so that we can use it in places
 * that require a value via the comma operator w/o resorting to casts
 * everywhere the macro is invoked.  
 *
 * NB: I checked the compiled code to make sure that it was inlined
 * everywhere that we would possibly care that it was inlines.
 */
#  pragma warning(disable : 4035)
   __inline FxU32 _grP6Fence(void) 
   { 
     __asm xchg eax, _GlideRoot.p6Fencer
   }
#  define P6FENCE _grP6Fence()
#  pragma warning(default : 4035)
#elif defined(macintosh) && defined(__POWERPC__) && defined(__MWERKS__)
#  define P6FENCE __sync()
#elif defined(__GNUC__) && defined(__i386__)
/*
 * This is the __linux__ code.
 */
#define P6FENCE asm("xchg %%eax, %0" : : "m" (_GlideRoot.p6Fencer) : "eax");
#else  /* !defined ( P6FENCE ) */
#  error "P6 Fencing code needs to be added for this compiler"
#endif /* !defined ( P6FENCE ) */

/*==========================================================================*/
/* Macros for declaring functions */
#define GR_DDFUNC(name, type, args) \
   type FX_CSTYLE name args

#define GR_EXT_ENTRY( name, type, args ) \
   type FX_CSTYLE name args

#define GR_ENTRY(name, type, args) \
   FX_EXPORT type FX_CSTYLE name args

#define GR_FAST_ENTRY(name, type, args) \
   __declspec naked FX_EXPORT type FX_CSTYLE name args

#define GR_DIENTRY(name, type, args) \
   type FX_CSTYLE name args

#ifdef GLIDE3
#define GR_STATE_ENTRY(name, type, args) \
   type _##name## args
#else
#define GR_STATE_ENTRY(name, type, args) \
   GR_ENTRY(name, type, args)
#endif

/*==========================================================================*/

#define STATE_REQUIRES_IT_DRGB        FXBIT(0)
#define STATE_REQUIRES_IT_DRGB_SHIFT        0
#define STATE_REQUIRES_IT_ALPHA       FXBIT(1)
#define STATE_REQUIRES_IT_ALPHA_SHIFT       1
#define STATE_REQUIRES_OOZ            FXBIT(2)
#define STATE_REQUIRES_OOZ_SHIFT            2
#define STATE_REQUIRES_OOW_FBI        FXBIT(3)
#define STATE_REQUIRES_OOW_FBI_SHIFT        3
#define STATE_REQUIRES_W_TMU0         FXBIT(4)
#define STATE_REQUIRES_W_TMU0_SHIFT         4
#define STATE_REQUIRES_ST_TMU0        FXBIT(5)
#define STATE_REQUIRES_ST_TMU0_SHIFT        5
#define STATE_REQUIRES_W_TMU1         FXBIT(6)
#define STATE_REQUIRES_W_TMU1_SHIFT         6
#define STATE_REQUIRES_ST_TMU1        FXBIT(7)
#define STATE_REQUIRES_ST_TMU1_SHIFT        7
#define STATE_REQUIRES_W_TMU2         FXBIT(8)
#define STATE_REQUIRES_W_TMU2_SHIFT         8
#define STATE_REQUIRES_ST_TMU2        FXBIT(9)
#define STATE_REQUIRES_ST_TMU2_SHIFT        9

#define GR_TMUMASK_TMU0 FXBIT(GR_TMU0)
#define GR_TMUMASK_TMU1 FXBIT(GR_TMU1)
#define GR_TMUMASK_TMU2 FXBIT(GR_TMU2)

#define STATE_USING_CC                FXBIT(0)
#define STATE_USING_CA                FXBIT(1)
#define STATE_USING_TCC               FXBIT(2)
#define STATE_USING_TAC               FXBIT(3)

/*
**  Parameter gradient offsets
**
**  These are the offsets (in bytes)of the DPDX and DPDY registers from
**  from the P register
*/
#ifdef GLIDE_USE_ALT_REGMAP
#define DPDX_OFFSET 0x4
#define DPDY_OFFSET 0x8
#else
#define DPDX_OFFSET 0x20
#define DPDY_OFFSET 0x40
#endif

#if   (GLIDE_PLATFORM & GLIDE_HW_SST1)
#define GLIDE_DRIVER_NAME "Voodoo Graphics"
#elif (GLIDE_PLATFORM & GLIDE_HW_SST96)
#define GLIDE_DRIVER_NAME "Voodoo Rush"
#elif (GLIDE_PLATFORM & GLIDE_HW_CVG)
#define GLIDE_DRIVER_NAME "Voodoo^2"
#elif (GLIDE_PLATFORM & GLIDE_HW_H3)
#define GLIDE_DRIVER_NAME "Banshee"
#else 
#define GLIDE_DRIVER_NAME "HOOPTI???"
#endif

/*==========================================================================*/
#ifndef FX_GLIDE_NO_FUNC_PROTO

/* NB: These routines are generally in asm (see xdraw2.inc), and have
 * their own internally defined calling conventions. The gc pointer
 * will be setup by the caller and will be in edx and that stack will
 * be configured as: return address, vertex a, vertex b, vertex c.  
 */
FxI32 FX_CSTYLE
_trisetup_cull(const void *va, const void *vb, const void *vc );
FxI32 FX_CSTYLE
_trisetup(const void *va, const void *vb, const void *vc );

FxI32 FX_CSTYLE
_trisetup_cull_noclip(const void *va, const void *vb, const void *vc );
FxI32 FX_CSTYLE
_trisetup_noclip(const void *va, const void *vb, const void *vc );

FxI32 FX_CSTYLE
_trisetup_cull_valid(const void *va, const void *vb, const void *vc );
FxI32 FX_CSTYLE
_trisetup_valid(const void *va, const void *vb, const void *vc );

FxI32 FX_CSTYLE
_trisetup_cull_noclip_valid(const void *va, const void *vb, const void *vc );
FxI32 FX_CSTYLE
_trisetup_noclip_valid(const void *va, const void *vb, const void *vc );


#define TRISETUP_NORGB(__cullMode) (((__cullMode) == GR_CULL_DISABLE) \
                                    ? _trisetup \
                                    : _trisetup_cull)

#define TRISETUP_NORGB_NOCLIP(__cullMode) (((__cullMode) == GR_CULL_DISABLE) \
                                    ? _trisetup_noclip \
                                    : _trisetup_cull_noclip)

#define TRISETUP_RGB(__cullMode)   TRISETUP_NORGB(__cullMode)
#define TRISETUP_ARGB(__cullMode)  TRISETUP_NORGB(__cullMode)
#if defined( __MSC__ ) 
#if (_MSC_VER < 1200)
// TRISETUP Macro for pre-msvc 6.0
#define TRISETUP \
  __asm { mov edx, gc }; \
  (*gc->triSetupProc)
#else  // _MSC_VER
// TRISETUP Macro for msvc 6 or later 
#ifdef GLIDE_DEBUG
// MSVC6 Debug does funny stuff, so push our parms inline
#define TRISETUP(_a, _b, _c) \
  __asm { \
    __asm mov  edx, gc \
    __asm mov  eax, _c \
    __asm push eax \
    __asm mov  ebx, _b \
    __asm push ebx \
    __asm mov  ecx, _a \
    __asm push ecx \
  } \
  ((FxI32 (*)(void))*gc->triSetupProc)()
#else // GLIDE_DEBUG
// MSVC6 Retail does funny stuff too, but Larry figured it out:
#define TRISETUP(_a, _b, _c) \
  __asm { mov edx, gc }; \
  ((FxI32 (*)(const void *va, const void *vb, const void *vc, GrGC *gc))*gc->triSetupProc)(_a, _b, _c, gc)
#endif // GLIDE_DEBUG
#endif // _MSC_VER
#elif defined(__POWERPC__)
#define TRISETUP(_a, _b, _c) \
  ((FxI32 (*)(const void *va, const void *vb, const void *vc, GrGC *gc))*gc->triSetupProc)(_a, _b, _c, gc)
#elif defined(__linux__)
#define TRISETUP(a, b, c) (gc->triSetupProc)(gc, a, b, c)
#else /* defined(__linux__) */
#define TRISETUP \
  (*gc->triSetupProc)
#endif	/* defined(__linux__) */
void
_grValidateState();

void FX_CSTYLE
_grDrawVertexList(FxU32 pktype, FxU32 type, FxI32 mode, FxI32 count, void *pointers);

void
_grAlphaBlendFunction(
                     GrAlphaBlendFnc_t rgb_sf,   GrAlphaBlendFnc_t rgb_df,
                     GrAlphaBlendFnc_t alpha_sf, GrAlphaBlendFnc_t alpha_df
                     );
void
_grAlphaTestFunction( GrCmpFnc_t function );

void
_grAlphaTestReferenceValue( GrAlpha_t value );

void
_grAlphaCombine(
               GrCombineFunction_t function, GrCombineFactor_t factor,
               GrCombineLocal_t local, GrCombineOther_t other,
               FxBool invert
               );

void
_grAlphaControlsITRGBLighting( FxBool enable );

void
_grColorCombine(
               GrCombineFunction_t function, GrCombineFactor_t factor,
               GrCombineLocal_t local, GrCombineOther_t other,
               FxBool invert );

void FX_CALL
grGetGammaTable(FxU32 nentries, FxU32 *red, FxU32 *green, FxU32 *blue);

void FX_CALL 
grChromaRangeMode(GrChromaRangeMode_t mode);

void FX_CALL 
grChromaRange( GrColor_t min, GrColor_t max , GrChromaRangeMode_t mode);

void FX_CALL 
grTexChromaMode(GrChipID_t tmu, GrTexChromakeyMode_t mode);

void FX_CALL 
grTexChromaRange(GrChipID_t tmu, GrColor_t min, GrColor_t max, GrTexChromakeyMode_t mode);

/*
** Napalm extension
*/
GrContext_t FX_CALL 
grSstWinOpenExt(
                FxU32                   hWnd,
                GrScreenResolution_t    resolution, 
                GrScreenRefresh_t       refresh, 
                GrColorFormat_t         format, 
                GrOriginLocation_t      origin, 
                GrPixelFormat_t         pixelformat,
                int                     nColBuffers,
                int                     nAuxBuffers);

void FX_CALL 
grStencilFunc(GrCmpFnc_t fnc, GrStencil_t ref, GrStencil_t mask);

void FX_CALL 
grStencilMask(GrStencil_t write_mask);

void FX_CALL 
grStencilOp(
            GrStencilOp_t stencil_fail,
            GrStencilOp_t depth_fail,
            GrStencilOp_t depth_pass);

void FX_CALL 
grBufferClearExt(
              GrColor_t color,
              GrAlpha_t alpha,
              FxU32     depth,
              GrStencil_t stencil);

void FX_CALL 
grLfbConstantStencil(GrStencil_t mode);


void FX_CALL 
grColorCombineExt(
                  GrCCUColor_t     a,
                  GrCombineMode_t  a_mode,
                  GrCCUColor_t     b,
                  GrCombineMode_t  b_mode,
                  GrCCUColor_t     c,
                  FxBool           c_invert,
                  GrCCUColor_t     d,
                  FxBool           d_invert,
                  FxU32            shift,
                  FxBool           invert);

void FX_CALL 
grAlphaCombineExt(
                  GrACUColor_t     a,
                  GrCombineMode_t  a_mode,
                  GrACUColor_t     b,
                  GrCombineMode_t  b_mode,
                  GrACUColor_t     c,
                  FxBool           c_invert,
                  GrACUColor_t     d,
                  FxBool           d_invert,
                  FxU32            shift,
                  FxBool           invert);

void FX_CALL 
grTexColorCombineExt(                
                     GrChipID_t       tmu,
                     GrTCCUColor_t    a,
                     GrCombineMode_t  a_mode,
                     GrTCCUColor_t    b,
                     GrCombineMode_t  b_mode,
                     GrTCCUColor_t    c,
                     FxBool           c_invert,
                     GrTCCUColor_t    d,
                     FxBool           d_invert,
                     FxU32            shift,
                     FxBool           invert);

void FX_CALL 
grTexAlphaCombineExt(                
                     GrChipID_t       tmu,
                     GrTACUColor_t    a,
                     GrCombineMode_t  a_mode,
                     GrTACUColor_t    b,
                     GrCombineMode_t  b_mode,
                     GrTACUColor_t    c,
                     FxBool           c_invert,
                     GrTACUColor_t    d,
                     FxBool           d_invert,
                     FxU32            shift,
                     FxBool           invert);

void FX_CALL
grConstantColorValueExt(
                        GrChipID_t    tmu,
                        GrColor_t     value) ;

void FX_CALL 
grColorMaskExt( FxBool r,
                FxBool g,
                FxBool b,
                FxBool a );

void FX_CALL 
grAlphaBlendFunctionExt( GrAlphaBlendFnc_t rgb_sf, 
                         GrAlphaBlendFnc_t rgb_df, 
                         GrAlphaBlendOp_t rgb_op,
                         GrAlphaBlendFnc_t alpha_sf, 
                         GrAlphaBlendFnc_t alpha_df, 
                         GrAlphaBlendOp_t alpha_op );

void FX_CALL 
grTBufferWriteMaskExt( FxU32 mask );

/* end of Napalm extension */

void
_grChipMask(FxU32 mask);

void
_grTex2ppc(FxBool enable);

void
_grAAOffsetValue(FxU32 *xOffset, 
                 FxU32 *yOffset, 
                 FxU32 minchipid,
                 FxU32 maxchipid,
                 FxBool enablePrimary,
                 FxBool enableSecondary);

void
_grEnableSliCtrl(void);

void
_grDisableSliCtrl(void);

void
_grRenderMode(FxU32 pixelformat);

void
_grChromaMode( GrChromaRangeMode_t mode );

void
_grChromakeyMode( GrChromakeyMode_t mode );

/* tbext */
void FX_CALL 
grTextureBuffer( GrChipID_t tmu, 
                 FxU32      startAddress,
                 GrLOD_t    thisLOD,
                 GrLOD_t    largeLOD,
                 GrAspectRatio_t aspectRatio,
                 GrTextureFormat_t format,
                 FxU32      odd_even_mask );

void FX_CALL 
grTextureAuxBuffer( GrChipID_t tmu, 
                                        FxU32      startAddress,
                                        GrLOD_t    thisLOD,
                                        GrLOD_t    largeLOD,
                                        GrAspectRatio_t aspectRatio,
                                        GrTextureFormat_t format,
                                        FxU32      odd_even_mask );

void FX_CALL
grAuxBuffer( GrBuffer_t buffer );

void 
_grValidateClipState( FxU32 minx, FxU32 miny, FxU32 maxx, FxU32 maxy );


#if GLIDE_DEBUG
/* These are only called for debug builds for tracing because their
 * handling is special cased in _grValidateState because of the
 * interdependency between the calls.  
 */
void _grDepthMask( FxBool mask );
void _grColorMask( FxBool rgb, FxBool a );
void _grLfbWriteColorFormat(GrColorFormat_t colorFormat);
void _grLfbWriteColorSwizzle(FxBool swizzleBytes, FxBool swapWords);
void _grFogColorValue( GrColor_t fogcolor );
void _grDepthBiasLevel( FxI32 level );
void _grChromakeyValue( GrColor_t color );
void _grChromaRange( GrColor_t max , GrChromaRangeMode_t mode);
#endif /* GLIDE_DEBUG */

void
_grDepthBufferFunction( GrCmpFnc_t function );

void
_grDepthBufferMode( GrDepthBufferMode_t mode );

void
_grDitherMode( GrDitherMode_t mode );

void
_grRenderBuffer( GrBuffer_t buffer );

void
_grSstOrigin(GrOriginLocation_t  origin);

void
_grClipWindow( FxU32 minx, FxU32 miny, FxU32 maxx, FxU32 maxy );

void
_grFogMode( GrFogMode_t mode );

void
_grConstantColorValue( GrColor_t value );

void FX_CSTYLE
_grDrawPoints(FxI32 mode, FxI32 count, void *pointers);

void FX_CSTYLE
_grDrawLineStrip(FxI32 mode, FxI32 count, FxI32 ltype, void *pointers);

void FX_CSTYLE
_grAADrawPoints(FxI32 mode, FxI32 count, void *pointers);

void FX_CSTYLE
_grAADrawLineStrip(FxI32 mode, FxI32 ltype, FxI32 count, void *pointers);

void FX_CSTYLE
_grAADrawLines(FxI32 mode, FxI32 count, void *pointers);

void FX_CSTYLE
_grAADrawTriangles(FxI32 mode, FxI32 ttype, FxI32 count, void *pointers);

void FX_CSTYLE
_grAAVpDrawTriangles(FxI32 mode, FxI32 ttype, FxI32 count, void *pointers);

void FX_CSTYLE
_grAADrawVertexList(FxU32 type, FxI32 mode, FxI32 count, void *pointers);

void FX_CSTYLE
_guTexMemReset(void);

int FX_CSTYLE
_grBufferNumPending(void);

FxBool FX_CSTYLE
_grSstIsBusy(void);

void FX_CSTYLE
_grSstResetPerfStats(void);

void FX_CSTYLE
_grResetTriStats(void);

FxU32 FX_CSTYLE
_grSstStatus(void);

FxU32 FX_CSTYLE
_grSstVideoLine(void);

FxBool FX_CSTYLE
_grSstVRetraceOn(void);

#endif /* FX_GLIDE_NO_FUNC_PROTO */

/*==========================================================================*/
/* 
**  thread stuff
*/

#if (GLIDE_PLATFORM & GLIDE_OS_WIN32)
#define W95_TEB_PTR                     0x18
#define W95_TEB_TLS_OFFSET              0x88
#define W95_TLS_INDEX_TO_OFFSET(i)      ((i)*sizeof(DWORD)+W95_TEB_TLS_OFFSET)

#define WNT_TEB_PTR                     0x18
#define WNT_TEB_TLS_OFFSET              0xE10
#define WNT_TLS_INDEX_TO_OFFSET(i)      ((i)*sizeof(DWORD)+WNT_TEB_TLS_OFFSET)

#define __GR_GET_TLSC_VALUE() \
__asm { \
   __asm mov eax, DWORD PTR fs:[WNT_TEB_PTR] \
   __asm add eax, DWORD PTR _GlideRoot.tlsOffset \
   __asm mov eax, DWORD PTR [eax] \
}

#pragma warning (4:4035)        /* No return value */
__inline FxU32
getThreadValueFast() {
  __asm {
    __asm mov eax, DWORD PTR fs:[WNT_TEB_PTR] 
    __asm add eax, DWORD PTR _GlideRoot.tlsOffset 
    __asm mov eax, DWORD PTR [eax] 
  }
}
#pragma warning (3:4035)
#endif

#if (GLIDE_PLATFORM & GLIDE_OS_MACOS)
extern FxU32 _threadValueMacOS;
__inline FxU32
getThreadValueFast() {
        return _threadValueMacOS;
}
#endif

#ifdef __linux__
extern FxU32 threadValueLinux;
#define getThreadValueFast() threadValueLinux
#endif /* defined(__linux__) */

#define CUR_TRI_PROC(__checkValidP, __cullP) \
  (*gc->archDispatchProcs.coorModeTriVector)[__checkValidP][__cullP]
#define INVALIDATE(regset) {\
  gc->state.invalid |= ##regset##BIT; \
  gc->triSetupProc = CUR_TRI_PROC(FXTRUE, (gc->state.cull_mode != GR_CULL_DISABLE)); \
}

#define INVALIDATE_TMU(tmu, regset) {\
  INVALIDATE(tmuConfig); \
  gc->state.tmuInvalid[tmu] |= ##regset##BIT; \
}
  
void 
initThreadStorage( void );

void
freeThreadStorage( void );

void 
setThreadValue( FxU32 value );

FxU32
getThreadValueSLOW( void );

void 
initCriticalSection( void );

void 
beginCriticalSection( void );

void 
endCriticalSection( void );


/*==========================================================================*/
/* 
**  function prototypes
*/

void
_grClipNormalizeAndGenerateRegValues(FxU32 minx, FxU32 miny, FxU32 maxx,
                                     FxU32 maxy, FxU32 *clipLeftRight,
                                     FxU32 *clipBottomTop);



void 
_grSwizzleColor(GrColor_t *color);

void
_grDisplayStats(void);

void
_GlideInitEnvironment(void);

void FX_CSTYLE
_grColorCombineDelta0Mode(FxBool delta0Mode);

void
_doGrErrorCallback(const char *name, const char *msg, FxBool fatal);

void _grErrorDefaultCallback(const char *s, FxBool fatal);

#ifdef __WIN32__
void _grErrorWindowsCallback(const char *s, FxBool fatal);
#endif /* __WIN32__ */

extern void
(*GrErrorCallback)(const char *string, FxBool fatal);

void GR_CDECL
_grFence(void);

int
_guHeapCheck(void);

void FX_CSTYLE
_grCCExtfbzColorPath(GrCCUColor_t     a,
                     GrCombineMode_t  a_mode,
                     GrCCUColor_t     b,
                     GrCombineMode_t  b_mode,
                     GrCCUColor_t     c,
                     FxBool           c_invert,
                     GrCCUColor_t     d,
                     FxBool           invert);

void FX_CSTYLE
_grACExtfbzColorPath(GrACUColor_t     a,
                     GrCombineMode_t  a_mode,
                     GrACUColor_t     b,
                     GrCombineMode_t  b_mode,
                     GrACUColor_t     c,
                     FxBool           c_invert,
                     GrACUColor_t     d,
                     FxBool           invert);

void FX_CSTYLE
_grCCExtcombineMode(GrCCUColor_t     a,
                    GrCombineMode_t  a_mode,
                    GrCCUColor_t     b,
                    GrCombineMode_t  b_mode,
                    GrCCUColor_t     c,
                    FxBool           d_invert,
                    FxU32            shift);

void FX_CSTYLE
_grACExtcombineMode(GrACUColor_t     a,
                    GrCombineMode_t  a_mode,
                    GrACUColor_t     b,
                    GrCombineMode_t  b_mode,
                    FxBool           d_invert,
                    FxU32            shift);

void FX_CSTYLE
_grTexColorCombineExt(GrChipID_t       tmu,
                      GrTCCUColor_t    a,
                      GrCombineMode_t  a_mode,
                      GrTCCUColor_t    b,
                      GrCombineMode_t  b_mode,
                      GrTCCUColor_t    c,
                      FxBool           c_invert,
                      GrTCCUColor_t    d,
                      FxBool           d_invert,
                      FxU32            shift,
                      FxBool           invert);

void FX_CSTYLE
_grTexAlphaCombineExt(GrChipID_t       tmu,
                      GrTACUColor_t    a,
                      GrCombineMode_t  a_mode,
                      GrTACUColor_t    b,
                      GrCombineMode_t  b_mode,
                      GrTACUColor_t    c,
                      FxBool           c_invert,
                      GrTACUColor_t    d,
                      FxBool           d_invert,
                      FxU32            shift,
                      FxBool           invert);
          
void FX_CSTYLE
_grRebuildDataList(void);

void
_grReCacheFifo(FxI32 n);

FxI32 GR_CDECL
_grSpinFifo(FxI32 n);

void
_grShamelessPlug(void);

FxBool
_grSstDetectResources(void);

FxU16
_grTexFloatLODToFixedLOD(float value);

void FX_CSTYLE
_grTexDetailControl(GrChipID_t tmu, FxU32 detail);

void FX_CSTYLE
_grTexDownloadNccTable(GrChipID_t tmu, FxU32 which,
                        const GuNccTable *ncc_table,
                        int start, int end);

void FX_CSTYLE
_grTexDownloadPalette(GrChipID_t   tmu, 
                      GrTexTable_t type,
                      GuTexPalette *pal,
                      int start, int end);

FxU32
_grTexCalcBaseAddress(FxU32 start_address, GrLOD_t largeLod,
                      GrAspectRatio_t aspect, GrTextureFormat_t fmt,
                      FxU32 odd_even_mask); 

FxI32
_grTexCalcBaseAddressTiled(GrChipID_t tmu,
                           FxU32 start_address, 
                           GrAspectRatio_t aspect,
                           GrLOD_t largeLod,
                           GrTextureFormat_t fmt,
                           FxU32 odd_even_mask);

void
_grTexForceLod(GrChipID_t tmu, int value);

FxU32
_grTexCalcMipmapLevelOffsetTiled(GrChipID_t tmu,
                                 GrLOD_t lod, GrLOD_t largeLOD, 
                                 GrAspectRatio_t ar, 
                                 GrTextureFormat_t fmt, 
                                 FxU32 evenOdd,
                                 FxU32 *tileXreturn,
                                 FxU32 *tileYreturn);

FxU32
_grTexTextureMemRequired(GrLOD_t small_lod, GrLOD_t large_lod, 
                         GrAspectRatio_t aspect, GrTextureFormat_t format,
                         FxU32 evenOdd,
                         FxBool roundP);
void FX_CSTYLE
_grUpdateParamIndex(void);

/* ddgump.c */
void FX_CSTYLE
_gumpTexCombineFunction(int virtual_tmu);

/* disst.c - this is an un-documented external for arcade developers */
extern FX_ENTRY void FX_CALL
grSstVidMode(FxU32 whichSst, FxVideoTimingInfo* vidTimings);

/* glfb.c */
extern FxBool
_grLfbWriteRegion(FxBool pixPipelineP, GrBuffer_t dst_buffer, 
                  FxU32 dst_x, FxU32 dst_y, 
                  GrLfbSrcFmt_t src_format, 
                  FxU32 src_width, FxU32 src_height, 
                  FxI32 src_stride, 
                  const void *src_data);

/* gglide.c - Flushes the current state in gc->state.fbi_config to the hw.
 */
extern void
_grFlushCommonStateRegs(void);

/* gsst.c */
extern void 
initGC( GrGC *gc );
extern void 
assertDefaultState( void );


/*==========================================================================*/
/*  GMT: have to figure out when to include this and when not to
*/
#if defined(GLIDE_DEBUG) || defined(GLIDE_ASSERT) || defined(GLIDE_SANITY_ASSERT) || defined(GLIDE_SANITY_SIZE)
  #define DEBUG_MODE 1
  #include <assert.h>
#endif

#define GR_DCL_GC GrGC *gc = (GrGC*)getThreadValueFast()

#define GR_DCL_HW_INIT SstRegs *hw
#define GR_DCL_HW_STAGE2 hw = (SstRegs *)gc->sstRegs

#define GR_DCL_HW SstRegs *hw = (SstRegs *)gc->sstRegs

#ifdef DEBUG_MODE
#define ASSERT(exp) GR_ASSERT(exp)
#define GR_DEBUG_DCL_INIT() \
                FxI32 saveLevel; \
                char* myName

#define GR_DEBUG_DCL_STAGE2(name,level) \
                GR_ASSERT(gc != NULL);  \
                                saveLevel = gc->myLevel; \
                                myName = name;  \
                                gc->myLevel = level; \
                gc->checkPtr = (FxU32)gc->cmdTransportInfo.fifoPtr; \
                GDBG_INFO(gc->myLevel,myName); \
                FXUNUSED(saveLevel); \
                FXUNUSED(hw); \
                FXUNUSED(saveLevel)

#define GR_DEBUG_DCL(name,level) \
                const FxI32 saveLevel = gc->myLevel; \
                const char* myName = name;  \
                GR_ASSERT(gc != NULL);  \
                gc->myLevel = level; \
                gc->checkPtr = (FxU32)gc->cmdTransportInfo.fifoPtr; \
                GDBG_INFO(gc->myLevel,myName); \
                FXUNUSED(saveLevel); \
                FXUNUSED(hw); \
                FXUNUSED(saveLevel)

#define GR_TRACE_EXIT(__n) \
                gc->myLevel = saveLevel; \
                GDBG_INFO(281, "%s --done---------------------------------------\n", __n)
#define GR_TRACE_RETURN(__l, __n, __v) \
                gc->myLevel = saveLevel; \
                GDBG_INFO((__l), "%s() => 0x%x---------------------\n", (__n), (__v), (__v))
#else /* !DEBUG_MODE */
#define ASSERT(exp)
#define GR_DEBUG_DCL_INIT()
#define GR_DEBUG_DCL_STAGE2(name, level)
#define GR_DEBUG_DCL(name, level)
#define GR_TRACE_EXIT(__n)
#define GR_TRACE_RETURN(__l, __n, __v) 
#endif /* !DEBUG_MODE */

#include <assert.h>

#ifdef GLIDE_ALT_TAB
#define GR_BEGIN_NOFIFOCHECK(name,level) \
                GR_DCL_GC;      \
                GR_DCL_HW;      \
                GR_DEBUG_DCL(name, level);   \
                FXUNUSED(hw); \
                if (!gc) \
                  return; \
                if (gc->lostContext) { \
                  if (*gc->lostContext) { \
                    return;\
                  }\
                }
#define GR_BEGIN_NOFIFOCHECK_RET(name,level) \
                GR_DCL_GC;      \
                GR_DCL_HW;      \
                GR_DEBUG_DCL(name, level);   \
                FXUNUSED(hw); \
                if (!gc) \
                  return 0; \
                if (gc->lostContext) {\
                  if (*gc->lostContext) { \
                      return 0;\
                  }\
                }
#define GR_BEGIN_NOFIFOCHECK_NORET(name,level) \
                GR_DCL_GC;      \
                GR_DCL_HW;      \
                GR_DEBUG_DCL(name, level);   \
                FXUNUSED(hw)
#else
#define GR_BEGIN_NOFIFOCHECK(name,level) \
                GR_DCL_GC;      \
                GR_DCL_HW;      \
                GR_DEBUG_DCL(name, level);   \
                FXUNUSED(hw)
#define GR_BEGIN_NOFIFOCHECK_RET(name,level) \
                GR_DCL_GC;      \
                GR_DCL_HW;      \
                GR_DEBUG_DCL(name, level);   \
                FXUNUSED(hw)
#define GR_BEGIN_NOFIFOCHECK_NORET(name,level) \
                GR_DCL_GC;      \
                GR_DCL_HW;      \
                GR_DEBUG_DCL(name, level);   \
                FXUNUSED(hw)
#endif

#define GR_BEGIN(name,level,size, packetNum) \
                GR_BEGIN_NOFIFOCHECK(name,level); \
                GR_SET_EXPECTED_SIZE(size, packetNum)

#define GR_END()        {GR_CHECK_SIZE(); GR_TRACE_EXIT(myName);}

#define GR_RETURN(val) \
                if (GDBG_GET_DEBUGLEVEL(gc->myLevel)) { \
                  GR_CHECK_SIZE(); \
                } \
                else \
                  GR_END(); \
                GR_TRACE_RETURN(gc->myLevel, myName, val); \
                return val

#if defined(GLIDE_SANITY_ASSERT)
#define GR_ASSERT(exp) ((void)((!(exp)) ? (_grAssert(#exp,  __FILE__, __LINE__),0) : 0xFFFFFFFF))
#else
#define GR_ASSERT(exp) ((void)(0 && ((FxU32)(exp))))
#endif

#define INTERNAL_CHECK(__name, __cond, __msg, __fatalP) \
    if (__cond) _doGrErrorCallback(__name, __msg, __fatalP)

#if defined(GLIDE_DEBUG)
#define GR_CHECK_F(name,condition,msg) INTERNAL_CHECK(name, condition, msg, FXTRUE)
#define GR_CHECK_W(name,condition,msg) INTERNAL_CHECK(name, condition, msg, FXFALSE)
#else
#define GR_CHECK_F(name,condition,msg)
#define GR_CHECK_W(name,condition,msg)
#endif

#if GLIDE_CHECK_COMPATABILITY
#define GR_CHECK_COMPATABILITY(__name, __cond, __msg) INTERNAL_CHECK(__name, __cond, __msg, FXTRUE)
#else
#define GR_CHECK_COMPATABILITY(__name, __cond, __msg) GR_CHECK_F(__name, __cond, __msg)
#endif /* !GLIDE_CHECK_COMPATABILITY */

/* macro define some basic and common GLIDE debug checks */
#define GR_CHECK_TMU(name,tmu) \
  GR_CHECK_COMPATABILITY(name, tmu < GR_TMU0 || tmu >= gc->num_tmu , "invalid TMU specified")

void
_grAssert(char *, char *, int);

void i3(void);

#if ASSERT_FAULT
#define ASSERT_FAULT_IMMED(__x) if (!(__x)) { \
                                 *(FxU32*)NULL = 0; \
                                 _grAssert(#__x, __FILE__, __LINE__); \
                              }
#else
#define ASSERT_FAULT_IMMED(__x) GR_ASSERT(__x)
#endif

/* Offsets to 'virtual' addresses in the hw */
#if (GLIDE_PLATFORM & GLIDE_HW_CVG)
#define HW_REGISTER_OFFSET      SST_3D_OFFSET
#define HW_FIFO_OFFSET          0x00200000UL    
#elif (GLIDE_PLATFORM & GLIDE_HW_H3)
#define HW_IO_REG_REMAP         SST_IO_OFFSET
#define HW_CMD_AGP_OFFSET       SST_CMDAGP_OFFSET
#define HW_2D_REG_OFFSET        SST_2D_OFFSET
#define HW_3D_REG_OFFSET        SST_3D_OFFSET
#define HW_REGISTER_OFFSET      HW_3D_REG_OFFSET
#else
#error "Must define virtual address spaces for this hw"
#endif

#define HW_FIFO_OFFSET          0x00200000UL
#define HW_LFB_OFFSET           SST_LFB_OFFSET
#define HW_TEXTURE_OFFSET       SST_TEX_OFFSET

#ifdef GLIDE_TEST_TEXTURE_ALIGNMENT
extern FxU32 SST_TEXTURE_ALIGN;
#else
#define SST_TEXTURE_ALIGN       0x10UL
#endif
#define SST_TEXTURE_ALIGN_MASK  (SST_TEXTURE_ALIGN - 0x01UL)

#if (GLIDE_PLATFORM & GLIDE_HW_CVG) || (GLIDE_PLATFORM & GLIDE_HW_H3)
#define HW_BASE_PTR(__b)        (__b)
#else
#error "Need HW_BASE_PTR to convert hw address into board address."
#endif
   
#define HW_REG_PTR(__b)        ((FxU32*)(((FxU32)(__b)) + HW_REGISTER_OFFSET))
#define HW_LFB_PTR(__b)        ((FxU32*)(((FxU32)(__b)) + HW_LFB_OFFSET))
#define HW_TEX_PTR(__b)        ((FxU32*)(((FxU32)(__b)) + HW_TEXTURE_OFFSET))   

/* access a floating point array with a byte index */
#define FARRAY(p,i)    (*(float *)((i)+(int)(p)))
#define ArraySize(__a) (sizeof(__a) / sizeof((__a)[0]))

#if GDBG_INFO_ON
/* cvg.c */
extern void
_grErrorCallback(const char* const procName,
                 const char* const format,
                 va_list           args);
#endif

/* Returns 16:16 pair indicating the cpu's manufacturer and its
 * capabilities. Non-Intel processors should have a vendor id w/ the
 * high bit set so that it appears to be a negative #. The value of
 * the capability field is assumed to be a monotonically increasing
 * inclusive set.
 *
 * Unknown:
 *   0xFFFF:0xFFFF
 *
 * Intel: 0x0000
 *  4: 486 and lower
 *  5: Pentium
 *  6: P6 Core or better
 *  7: p6 Core w/ katmai (instructions/write buffers)
 *
 * AMD: 0x8001
 *  1: MMX
 *  2: 3DNow!(tm)
 *  4: K6-type MTRRs
 *  8: P2-type MTRRs
 *
 * Cyrix: 0x8002
 *  1: MMX
 *  2: 3DNow!(tm)
 *
 * IDT: 0x8003
 *  1: MMX
 *  2: 3DNow!(tm)
 *  
 */

enum {
  kCPUVendorIntel   = 0x0000,
  kCPUVendorAMD     = 0x8001,
  kCPUVendorCyrix   = 0x8002,
  kCPUVendorIDT     = 0x8003,
  kCPUVendorUnknown = 0xFFFF
};

extern FxI32 GR_CDECL
_cpu_detect_asm(void);

extern void GR_CDECL 
single_precision_asm(void);

extern void GR_CDECL 
double_precision_asm(void);


/* The translation macros convert from the reasonable log2 formats to
 * the somewhat whacked (For those of us coming back to sst1 things
 * from sst2 w/ its saner lms notation) sst1 lod format. The api and
 * internal functions pass log2 values, but we convert to lod values
 * when writing things out to the hw or to index the legacy size
 * tables listed below.
 *
 * G3_LOD_TRANSLATE() is now undefined.  Use _g3LodXlat() if necessary.
 */
#define G3_ASPECT_TRANSLATE(__aspect)                 (0x3 - (__aspect))

/* ditex.c - 
 * Lookup tables to do translations from various aspect ratio/lod
 * sizes to more meaningful things like bytes.  
 */
extern const FxU32 _grBitsPerTexel[];
extern const int _grMipMapHostWH[G3_ASPECT_TRANSLATE(GR_ASPECT_LOG2_1x8) + 1]
                                [GR_LOD_LOG2_2048 + 1][2];
extern const int _grMipMapHostWHCmp4Bit[G3_ASPECT_TRANSLATE(GR_ASPECT_LOG2_1x8) + 1][GR_LOD_LOG2_2048 + 1][2];
extern const FxU32 _grMipMapHostSize[][12];
extern const FxU32 _grMipMapHostSizeCmp4Bit[][12];
extern const FxI32 _grMipMapOffset[4][16];
extern const FxI32 _grMipMapOffsetCmp4Bit[7][16];
extern const FxI32 _grMipMapOffset_Tsplit[4][16];
extern const FxI32 _grMipMapOffset_TsplitCmp4Bit[7][16];
extern const FxU32 _gr_evenOdd_xlate_table[];
extern const FxU32 _gr_aspect_xlate_table[];

#define WIDTH_BY_ASPECT_LOD(__aspect, __lod) \
  _grMipMapHostWH[G3_ASPECT_TRANSLATE(__aspect)][(__lod)][0]

#define HEIGHT_BY_ASPECT_LOD(__aspect, __lod) \
  _grMipMapHostWH[G3_ASPECT_TRANSLATE(__aspect)][(__lod)][1]

#define WIDTH_BY_ASPECT_LOD_FXT1(__aspect, __lod) \
  _grMipMapHostWHCmp4Bit[G3_ASPECT_TRANSLATE(__aspect)][(__lod)][0]

#define HEIGHT_BY_ASPECT_LOD_FXT1(__aspect, __lod) \
  _grMipMapHostWHCmp4Bit[G3_ASPECT_TRANSLATE(__aspect)][(__lod)][1]

GrLOD_t
_g3LodXlat(const GrLOD_t someLOD, const FxBool tBig);

#endif /* __FXGLIDE_H__ */

