fxdrv.h

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

/*
 * Mesa 3-D graphics library
 * Version:  4.0
 *
 * Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included
 * in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */

/* Authors:
 *    David Bucciarelli
 *    Brian Paul
 *    Daryll Strauss
 *    Keith Whitwell
 *    Daniel Borca
 *    Hiroshi Morii
 */

/* fxsetup.c - 3Dfx VooDoo rendering mode setup functions */


#ifndef FXDRV_H
#define FXDRV_H

/* If you comment out this define, a variable takes its place, letting
 * you turn debugging on/off from the debugger.
 */

#include "glheader.h"


#if defined(__linux__)
#include <signal.h>
#endif

#include "context.h"
#include "imports.h"
#include "macros.h"
#include "matrix.h"
#include "mtypes.h"

#include "GL/fxmesa.h"
#include "fxglidew.h"

#include "math/m_vector.h"


#define COPY_FLOAT(dst, src)    (dst) = (src)

/* Define some shorter names for these things.
 */
#define XCOORD   GR_VERTEX_X_OFFSET
#define YCOORD   GR_VERTEX_Y_OFFSET
#define ZCOORD   GR_VERTEX_OOZ_OFFSET
#define OOWCOORD GR_VERTEX_OOW_OFFSET

#define S0COORD  GR_VERTEX_SOW_TMU0_OFFSET
#define T0COORD  GR_VERTEX_TOW_TMU0_OFFSET
#define S1COORD  GR_VERTEX_SOW_TMU1_OFFSET
#define T1COORD  GR_VERTEX_TOW_TMU1_OFFSET



#ifdef __i386__
#define FXCOLOR4( c )  (* (int *)c)
#else
#define FXCOLOR4( c ) (      \
  ( ((unsigned int)(c[3]))<<24 ) | \
  ( ((unsigned int)(c[2]))<<16 ) | \
  ( ((unsigned int)(c[1]))<<8 )  | \
  (  (unsigned int)(c[0])) )
#endif

#define TDFXPACKCOLOR1555( r, g, b, a )					   \
   ((((r) & 0xf8) << 7) | (((g) & 0xf8) << 2) | (((b) & 0xf8) >> 3) |	   \
    ((a) ? 0x8000 : 0))
#define TDFXPACKCOLOR565( r, g, b )					   \
   ((((r) & 0xf8) << 8) | (((g) & 0xfc) << 3) | (((b) & 0xf8) >> 3))
#define TDFXPACKCOLOR8888( r, g, b, a )					   \
   (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))



/* fastpath flags first
 */
#define SETUP_TMU0 0x1
#define SETUP_TMU1 0x2
#define SETUP_RGBA 0x4
#define SETUP_SNAP 0x8
#define SETUP_XYZW 0x10
#define SETUP_PTEX 0x20
#define SETUP_PSIZ 0x40
#define SETUP_SPEC 0x80
#define SETUP_FOGC 0x100
#define MAX_SETUP  0x200


#define FX_NUM_TMU 2

#define FX_TMU0      GR_TMU0
#define FX_TMU1      GR_TMU1
#define FX_TMU_SPLIT 98
#define FX_TMU_BOTH  99
#define FX_TMU_NONE  100

/* Used for fxMesa->lastUnitsMode */

#define FX_UM_NONE                  0x00000000

#define FX_UM_E0_REPLACE            0x00000001
#define FX_UM_E0_MODULATE           0x00000002
#define FX_UM_E0_DECAL              0x00000004
#define FX_UM_E0_BLEND              0x00000008
#define FX_UM_E0_ADD		    0x00000010

#define FX_UM_E1_REPLACE            0x00000020
#define FX_UM_E1_MODULATE           0x00000040
#define FX_UM_E1_DECAL              0x00000080
#define FX_UM_E1_BLEND              0x00000100
#define FX_UM_E1_ADD		    0x00000200

#define FX_UM_E_ENVMODE             0x000003ff

#define FX_UM_E0_ALPHA              0x00001000
#define FX_UM_E0_LUMINANCE          0x00002000
#define FX_UM_E0_LUMINANCE_ALPHA    0x00004000
#define FX_UM_E0_INTENSITY          0x00008000
#define FX_UM_E0_RGB                0x00010000
#define FX_UM_E0_RGBA               0x00020000

#define FX_UM_E1_ALPHA              0x00040000
#define FX_UM_E1_LUMINANCE          0x00080000
#define FX_UM_E1_LUMINANCE_ALPHA    0x00100000
#define FX_UM_E1_INTENSITY          0x00200000
#define FX_UM_E1_RGB                0x00400000
#define FX_UM_E1_RGBA               0x00800000

#define FX_UM_E_IFMT                0x00fff000

#define FX_UM_COLOR_ITERATED        0x01000000
#define FX_UM_COLOR_CONSTANT        0x02000000
#define FX_UM_ALPHA_ITERATED        0x04000000
#define FX_UM_ALPHA_CONSTANT        0x08000000


/* for Voodoo3/Banshee's grColorCombine() and grAlphaCombine() */
struct tdfx_combine {
   GrCombineFunction_t Function;	/* Combine function */
   GrCombineFactor_t Factor;		/* Combine scale factor */
   GrCombineLocal_t Local;		/* Local combine source */
   GrCombineOther_t Other;		/* Other combine source */
   FxBool Invert;			/* Combine result inversion flag */
};

/* for Voodoo3's grTexCombine() */
struct tdfx_texcombine {
   GrCombineFunction_t FunctionRGB;
   GrCombineFactor_t FactorRGB;
   GrCombineFunction_t FunctionAlpha;
   GrCombineFactor_t FactorAlpha;
   FxBool InvertRGB;
   FxBool InvertAlpha;
};


/* for Voodoo5's grColorCombineExt() */
struct tdfx_combine_color_ext {
   GrCCUColor_t SourceA;
   GrCombineMode_t ModeA;
   GrCCUColor_t SourceB;
   GrCombineMode_t ModeB;
   GrCCUColor_t SourceC;
   FxBool InvertC;
   GrCCUColor_t SourceD;
   FxBool InvertD;
   FxU32 Shift;
   FxBool Invert;
};

/* for Voodoo5's grAlphaCombineExt() */
struct tdfx_combine_alpha_ext {
   GrACUColor_t SourceA;
   GrCombineMode_t ModeA;
   GrACUColor_t SourceB;
   GrCombineMode_t ModeB;
   GrACUColor_t SourceC;
   FxBool InvertC;
   GrACUColor_t SourceD;
   FxBool InvertD;
   FxU32 Shift;
   FxBool Invert;
};

/* for Voodoo5's grTexColorCombineExt() */
struct tdfx_color_texenv {
   GrTCCUColor_t SourceA;
   GrCombineMode_t ModeA;
   GrTCCUColor_t SourceB;
   GrCombineMode_t ModeB;
   GrTCCUColor_t SourceC;
   FxBool InvertC;
   GrTCCUColor_t SourceD;
   FxBool InvertD;
   FxU32 Shift;
   FxBool Invert;
};

/* for Voodoo5's grTexAlphaCombineExt() */
struct tdfx_alpha_texenv {
   GrTACUColor_t SourceA;
   GrCombineMode_t ModeA;
   GrTACUColor_t SourceB;
   GrCombineMode_t ModeB;
   GrTACUColor_t SourceC;
   FxBool InvertC;
   GrTCCUColor_t SourceD;
   FxBool InvertD;
   FxU32 Shift;
   FxBool Invert;
};

/* Voodoo5's texture combine environment */
struct tdfx_texcombine_ext {
   struct tdfx_alpha_texenv Alpha;
   struct tdfx_color_texenv Color;
   GrColor_t EnvColor;
};


/*
  Memory range from startAddr to endAddr-1
*/
typedef struct MemRange_t
{
   struct MemRange_t *next;
   FxU32 startAddr, endAddr;
}
MemRange;

typedef struct
{
   GLsizei width, height;	/* image size */
   GLint wScale, hScale;	/* image scale factor */
   GrTextureFormat_t glideFormat;	/* Glide image format */
}
tfxMipMapLevel;

/*
 * TDFX-specific texture object data.  This hangs off of the
 * struct gl_texture_object DriverData pointer.
 */
typedef struct tfxTexInfo_t
{
   struct tfxTexInfo_t *next;
   struct gl_texture_object *tObj;

   GLuint lastTimeUsed;
   FxU32 whichTMU;
   GLboolean isInTM;

   MemRange *tm[FX_NUM_TMU];

   GLint minLevel, maxLevel;
   GLint baseLevelInternalFormat;

   GrTexInfo info;

   GrTextureFilterMode_t minFilt;
   GrTextureFilterMode_t maxFilt;
   FxBool LODblend;

   GrTextureClampMode_t sClamp;
   GrTextureClampMode_t tClamp;

   GrMipMapMode_t mmMode;

   GLfloat sScale, tScale;

   GrTexTable_t paltype;
   GuTexPalette palette;

   GLboolean fixedPalette;
   GLboolean validated;

   GLboolean padded;
}
tfxTexInfo;

typedef struct
{
   GLuint swapBuffer;
   GLuint reqTexUpload;
   GLuint texUpload;
   GLuint memTexUpload;
}
tfxStats;



typedef struct
{
   /* Alpha test */

   GLboolean alphaTestEnabled;
   GrCmpFnc_t alphaTestFunc;
   GLfloat alphaTestRefValue;

   /* Blend function */

   GLboolean blendEnabled;
   GrAlphaBlendFnc_t blendSrcFuncRGB;
   GrAlphaBlendFnc_t blendDstFuncRGB;
   GrAlphaBlendFnc_t blendSrcFuncAlpha;
   GrAlphaBlendFnc_t blendDstFuncAlpha;
   GrAlphaBlendOp_t blendEqRGB;
   GrAlphaBlendOp_t blendEqAlpha;

   /* Depth test */

   GLboolean depthTestEnabled;
   GLboolean depthMask;
   GrCmpFnc_t depthTestFunc;
   FxI32 depthBias;

   /* Stencil */

   GLboolean stencilEnabled;
   GrCmpFnc_t stencilFunction;		/* Stencil function */
   GrStencil_t stencilRefValue;		/* Stencil reference value */
   GrStencil_t stencilValueMask;	/* Value mask */
   GrStencil_t stencilWriteMask;	/* Write mask */
   GrCmpFnc_t stencilFailFunc;		/* Stencil fail function */
   GrCmpFnc_t stencilZFailFunc;		/* Stencil pass, depth fail function */
   GrCmpFnc_t stencilZPassFunc;		/* Stencil pass, depth pass function */
   GrStencil_t stencilClear;		/* Buffer clear value */
}
tfxUnitsState;




/* Flags for fxMesa->new_state
 */
#define FX_NEW_TEXTURING      0x1
#define FX_NEW_BLEND          0x2
#define FX_NEW_ALPHA          0x4
#define FX_NEW_DEPTH          0x8
#define FX_NEW_FOG            0x10
#define FX_NEW_SCISSOR        0x20
#define FX_NEW_COLOR_MASK     0x40
#define FX_NEW_CULL           0x80
#define FX_NEW_STENCIL        0x100


#define FX_CONTEXT(ctx) ((fxMesaContext)((ctx)->DriverCtx))

#define FX_TEXTURE_DATA(texUnit) fxTMGetTexInfo((texUnit)->_Current)

#define fxTMGetTexInfo(o) ((tfxTexInfo*)((o)->DriverData))

#define FX_MIPMAP_DATA(img)  ((tfxMipMapLevel *) (img)->DriverData)

#define BEGIN_BOARD_LOCK()
#define END_BOARD_LOCK()
#define BEGIN_CLIP_LOOP()
#define END_CLIP_LOOP()




/* Covers the state referenced by IsInHardware:
 */