tdfx_context.h

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

/* -*- mode: c; c-basic-offset: 3 -*-
 *
 * Copyright 2000 VA Linux Systems Inc., Fremont, California.
 *
 * 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 (including the next
 * paragraph) 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
 * VA LINUX SYSTEMS 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.
 */
/* $XFree86: xc/lib/GL/mesa/src/drv/tdfx/tdfx_context.h,v 1.5 2002/02/24 21:51:10 dawes Exp $ */

/*
 * New fixes:
 *	Daniel Borca <[e-mail]>, 19 Jul 2004
 *
 * Original rewrite:
 *	Gareth Hughes <[e-mail]>, 29 Sep - 1 Oct 2000
 *
 * Authors:
 *	Gareth Hughes <[e-mail]>
 *
 */

#ifndef __TDFX_CONTEXT_H__
#define __TDFX_CONTEXT_H__

#include <sys/time.h>
#include "dri_util.h"
#ifdef XFree86Server
#include "GL/xf86glx.h"
#else
#include "glheader.h"
#endif
#if defined(__linux__)
#include <signal.h>
#endif

#include "drm.h"
#include "drm_sarea.h"
#include "tdfx_glide.h"
#include "xmlconfig.h"

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

#include "tdfx_screen.h"




#define TDFX_TMU0		GR_TMU0
#define TDFX_TMU1		GR_TMU1
#define TDFX_TMU_SPLIT		98
#define TDFX_TMU_BOTH		99
#define TDFX_TMU_NONE		100



/* Flags for fxMesa->new_state
 */
#define TDFX_NEW_COLOR		0x0001
#define TDFX_NEW_ALPHA		0x0002
#define TDFX_NEW_DEPTH		0x0004
#define TDFX_NEW_FOG		0x0008
#define TDFX_NEW_STENCIL	0x0010
#define TDFX_NEW_CLIP		0x0020
#define TDFX_NEW_VIEWPORT	0x0040
#define TDFX_NEW_CULL		0x0080
#define TDFX_NEW_GLIDE		0x0100
#define TDFX_NEW_TEXTURE	0x0200
#define TDFX_NEW_CONTEXT	0x0400
#define TDFX_NEW_LINE		0x0800
#define TDFX_NEW_RENDER         0x1000
#define TDFX_NEW_STIPPLE	0x2000
#define TDFX_NEW_TEXTURE_BIND   0x4000 /* experimental */


/* Flags for fxMesa->dirty
 */
#define TDFX_UPLOAD_COLOR_COMBINE	0x00000001
#define TDFX_UPLOAD_ALPHA_COMBINE	0x00000002
#define TDFX_UPLOAD_RENDER_BUFFER	0x00000004
#define TDFX_UPLOAD_ALPHA_TEST		0x00000008
#define TDFX_UPLOAD_ALPHA_REF		0x00000010
#define TDFX_UPLOAD_BLEND_FUNC		0x00000020
#define TDFX_UPLOAD_DEPTH_MODE		0x00000040
#define TDFX_UPLOAD_DEPTH_BIAS		0x00000080
#define TDFX_UPLOAD_DEPTH_FUNC		0x00000100
#define TDFX_UPLOAD_DEPTH_MASK		0x00000200
#define TDFX_UPLOAD_FOG_MODE		0x00000400
#define TDFX_UPLOAD_FOG_COLOR		0x00000800
#define TDFX_UPLOAD_FOG_TABLE		0x00001000
#define TDFX_UPLOAD_CONSTANT_COLOR	0x00002000

#define TDFX_UPLOAD_CLIP		0x00002000
#define TDFX_UPLOAD_CULL		0x00004000
#define TDFX_UPLOAD_VERTEX_LAYOUT	0x00008000
#define TDFX_UPLOAD_COLOR_MASK		0x00010000
#define TDFX_UPLOAD_DITHER		0x00040000
#define TDFX_UPLOAD_STENCIL		0x00080000

#define TDFX_UPLOAD_TEXTURE_SOURCE	0x00100000
#define TDFX_UPLOAD_TEXTURE_PARAMS	0x00200000
#define TDFX_UPLOAD_TEXTURE_PALETTE	0x00400000
#define TDFX_UPLOAD_TEXTURE_ENV		0x00800000
#define TDFX_UPLOAD_TEXTURE_IMAGES	0x01000000

#define TDFX_UPLOAD_LINE		0x02000000

#define TDFX_UPLOAD_STIPPLE		0x04000000

/* Flags for software fallback cases */
/* See correponding strings in tdfx_tris.c */
#define TDFX_FALLBACK_TEXTURE_MAP	0x0001
#define TDFX_FALLBACK_DRAW_BUFFER	0x0002
#define TDFX_FALLBACK_SPECULAR		0x0004
#define TDFX_FALLBACK_STENCIL		0x0008
#define TDFX_FALLBACK_RENDER_MODE	0x0010
#define TDFX_FALLBACK_LOGICOP		0x0020
#define TDFX_FALLBACK_TEXTURE_ENV	0x0040
#define TDFX_FALLBACK_TEXTURE_BORDER	0x0080
#define TDFX_FALLBACK_COLORMASK		0x0100
#define TDFX_FALLBACK_BLEND		0x0200
#define TDFX_FALLBACK_LINE_STIPPLE	0x0400
#define TDFX_FALLBACK_DISABLE		0x0800

/* Different Glide vertex layouts
 */
#define TDFX_LAYOUT_TINY	0
#define TDFX_LAYOUT_NOTEX	1
#define TDFX_LAYOUT_SINGLE	2
#define TDFX_LAYOUT_MULTI	3
#define TDFX_LAYOUT_PROJ1	4
#define TDFX_LAYOUT_PROJ2	5
#define TDFX_NUM_LAYOUTS	6

#define TDFX_XY_OFFSET		0
#define TDFX_Z_OFFSET		8
#define TDFX_Q_OFFSET		12
#define TDFX_ARGB_OFFSET	16
#define TDFX_FOG_OFFSET         20
#define TDFX_ST0_OFFSET		24
#define TDFX_ST1_OFFSET		32
#define TDFX_Q0_OFFSET		40
#define TDFX_Q1_OFFSET		44


/* Flags for buffer clears
 */
#define TDFX_FRONT		0x1
#define TDFX_BACK		0x2
#define TDFX_DEPTH		0x4
#define TDFX_STENCIL		0x8

/*
 * Subpixel offsets to adjust Mesa's (true) window coordinates to
 * Glide coordinates.  We need these to ensure precise rasterization.
 * Otherwise, we'll fail a bunch of conformance tests.
 */
#define TRI_X_OFFSET    ( 0.0F)
#define TRI_Y_OFFSET    ( 0.0F)
#define LINE_X_OFFSET   ( 0.0F)
#define LINE_Y_OFFSET   ( 0.125F)
#define PNT_X_OFFSET    ( 0.375F)
#define PNT_Y_OFFSET    ( 0.375F)


#define TDFX_DEPTH_BIAS_SCALE	128

/* Including xf86PciInfo.h causes a bunch of errors
 */
#ifndef PCI_CHIP_BANSHEE
#define PCI_CHIP_BANSHEE	0x0003
#define PCI_CHIP_VOODOO3	0x0005
#define PCI_CHIP_VOODOO4	0x0009
#define PCI_CHIP_VOODOO5	0x0009
#endif

#define TDFX_IS_BANSHEE( fxMesa ) \
		( fxMesa->fxScreen->deviceID == PCI_CHIP_BANSHEE )
#define TDFX_IS_VOODOO3( fxMesa ) \
		( fxMesa->fxScreen->deviceID == PCI_CHIP_VOODOO3 )
#define TDFX_IS_VOODOO4( fxMesa ) \
		( fxMesa->fxScreen->deviceID == PCI_CHIP_VOODOO4 )
#define TDFX_IS_VOODOO5( fxMesa ) \
		( fxMesa->fxScreen->deviceID == PCI_CHIP_VOODOO5 )
#define TDFX_IS_NAPALM( fxMesa ) \
                ( (fxMesa->fxScreen->deviceID == PCI_CHIP_VOODOO4) || \
                  (fxMesa->fxScreen->deviceID == PCI_CHIP_VOODOO5) )


#define PACK_BGRA32(R, G, B, A)  \
    ( (((GLuint) (R)) << 16) | \
      (((GLuint) (G)) <<  8) | \
      (((GLuint) (B))      ) | \
      (((GLuint) (A)) << 24) )

#define PACK_RGBA32(R, G, B, A)  \
    ( (((GLuint) (R))      ) | \
      (((GLuint) (G)) <<  8) | \
      (((GLuint) (B)) << 16) | \
      (((GLuint) (A)) << 24) )

/*
 * The first two macros are to pack 8 bit color
 * channel values into a 565 format.
 */
#define PACK_RGB16(R, G, B)         \
    ((((GLuint) (R) & 0xF8) << 8) | \
     (((GLuint) (G) & 0xFC) << 3) | \
      (((GLuint) (B) & 0xFF)         >> 3))
#define PACK_BGR16(R, G, B)         \
    ((((GLuint) (B) & 0xF8) << 8) | \
     (((GLuint) (G) & 0xFC) << 3) | \
     (((GLuint) (R) & 0xFF) >> 3))
/*
 * The second two macros pack 8 bit color channel values
 * into 1555 values.
 */
#define PACK_RGBA16(R, G, B, A)       \
    (((((GLuint) (A) & 0xFF) > 0) << 15)| \
     (((GLuint) (R)  & 0xF8)      << 7) | \
     (((GLuint) (G)  & 0xF8)      << 2) | \
     (((GLuint) (B)  & 0xF8)      >> 3))
#define PACK_BGRA16(R, G, B, A) \
    (((((GLuint) (A) & 0xFF) > 0) << 15)| \
      (((GLuint) (B) & 0xF8)     << 7)  | \
      (((GLuint) (G) & 0xF8)     << 2)  | \
      (((GLuint) (R) & 0xF8)     >> 3))

/* Used in calls to grColorMaskv()...
 */
extern const GLboolean false4[4];
extern const GLboolean true4[4];


typedef struct tdfx_context tdfxContextRec;
typedef struct tdfx_context *tdfxContextPtr;


typedef struct {
   volatile int fifoPtr;
   volatile int fifoRead;
   volatile int fifoOwner;
   volatile int ctxOwner;
   volatile int texOwner;
}
TDFXSAREAPriv;


typedef struct {
   GLuint swapBuffer;
   GLuint reqTexUpload;
   GLuint texUpload;
   GLuint memTexUpload;
   GLuint texSwaps;
} tdfxStats;



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


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


#define TDFX_NUM_TMU		2


typedef struct tdfxTexInfo_t
{
   GLboolean isInTM;
   GLboolean reloadImages;  /* if true, resend images to Glide */
   GLuint lastTimeUsed;
   FxU32 whichTMU;

   GrTexInfo info;
   GrAspectRatio_t aspectRatio;
   tdfxMemRange *tm[TDFX_NUM_TMU];

   GLint minLevel, maxLevel;
   GrTextureFilterMode_t minFilt;
   GrTextureFilterMode_t magFilt;
   GrTextureClampMode_t sClamp;
   GrTextureClampMode_t tClamp;
   FxBool LODblend;
   GrMipMapMode_t mmMode;

   GLfloat sScale, tScale;  /* texcoord scale factor */

   GrTexTable_t paltype;
   GuTexPalette palette;

   GLboolean padded;
}
tdfxTexInfo;


#define TDFX_TEXTURE_DATA(mesaObj) ((tdfxTexInfo *)((mesaObj)->DriverData))

#define TDFX_TEXIMAGE_DATA(mesaImg) ((tdfxMipMapLevel *)((mesaImg)->DriverData))



/*
 * This is state which may be shared by several tdfx contexts.
 * It hangs off of Mesa's gl_shared_state object (ctx->Shared->DriverData).
 */