/* * Mesa 3-D graphics library * Version: 6.5.3 * * Copyright (C) 2005-2007 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. */ /** * \file slang_mem.c * * Memory manager for GLSL compiler. The general idea is to do all * allocations out of a large pool then just free the pool when done * compiling to avoid intricate malloc/free tracking and memory leaks. * * \author Brian Paul */ #include "main/context.h" #include "main/macros.h" #include "slang_mem.h" #define GRANULARITY 8 #define ROUND_UP(B) ( ((B) + (GRANULARITY - 1)) & ~(GRANULARITY - 1) ) /** If 1, use conventional malloc/free. Helpful for debugging */ #define USE_MALLOC_FREE 0 struct slang_mempool_ { GLuint Size, Used, Count, Largest; char *Data; struct slang_mempool_ *Next; }; slang_mempool * _slang_new_mempool(GLuint initialSize) { slang_mempool *pool = (slang_mempool *) _mesa_calloc(sizeof(slang_mempool)); if (pool) { pool->Data = (char *) _mesa_calloc(initialSize); /*printf("ALLOC MEMPOOL %d at %p\n", initialSize, pool->Data);*/ if (!pool->Data) { _mesa_free(pool); return NULL; } pool->Size = initialSize; pool->Used = 0; } return pool; } void _slang_delete_mempool(slang_mempool *pool) { GLuint total = 0; while (pool) { slang_mempool *next = pool->Next; /* printf("DELETE MEMPOOL %u / %u count=%u largest=%u\n", pool->Used, pool->Size, pool->Count, pool->Largest); */ total += pool->Used; _mesa_free(pool->Data); _mesa_free(pool); pool = next; } /*printf("TOTAL ALLOCATED: %u\n", total);*/ } #ifdef DEBUG static void check_zero(const char *addr, GLuint n) { GLuint i; for (i = 0; i < n; i++) { assert(addr[i]==0); } } #endif #ifdef DEBUG static GLboolean is_valid_address(const slang_mempool *pool, void *addr) { while (pool) { if ((char *) addr >= pool->Data && (char *) addr < pool->Data + pool->Used) return GL_TRUE; pool = pool->Next; } return GL_FALSE; } #endif /** * Alloc 'bytes' from shader mempool. */ void * _slang_alloc(GLuint bytes) { #if USE_MALLOC_FREE return _mesa_calloc(bytes); #else slang_mempool *pool; GET_CURRENT_CONTEXT(ctx); pool = (slang_mempool *) ctx->Shader.MemPool; if (bytes == 0) bytes = 1; while (pool) { if (pool->Used + bytes <= pool->Size) { /* found room */ void *addr = (void *) (pool->Data + pool->Used); #ifdef DEBUG check_zero((char*) addr, bytes); #endif pool->Used += ROUND_UP(bytes); pool->Largest = MAX2(pool->Largest, bytes); pool->Count++; /*printf("alloc %u Used %u\n", bytes, pool->Used);*/ return addr; } else if (pool->Next) { /* try next block */ pool = pool->Next; } else { /* alloc new pool */ const GLuint sz = MAX2(bytes, pool->Size); pool->Next = _slang_new_mempool(sz); if (!pool->Next) { /* we're _really_ out of memory */ return NULL; } else { pool = pool->Next; pool->Largest = bytes; pool->Count++; pool->Used = ROUND_UP(bytes); #ifdef DEBUG check_zero((char*) pool->Data, bytes); #endif return (void *) pool->Data; } } } return NULL; #endif } void * _slang_realloc(void *oldBuffer, GLuint oldSize, GLuint newSize) { #if USE_MALLOC_FREE return _mesa_realloc(oldBuffer, oldSize, newSize); #else GET_CURRENT_CONTEXT(ctx); slang_mempool *pool = (slang_mempool *) ctx->Shader.MemPool; (void) pool; if (newSize < oldSize) { return oldBuffer; } else { const GLuint copySize = (oldSize < newSize) ? oldSize : newSize; void *newBuffer = _slang_alloc(newSize); if (oldBuffer) ASSERT(is_valid_address(pool, oldBuffer)); if (newBuffer && oldBuffer && copySize > 0) _mesa_memcpy(newBuffer, oldBuffer, copySize); return newBuffer; } #endif } /** * Clone string, storing in current mempool. */ char * _slang_strdup(const char *s) { if (s) { size_t l = _mesa_strlen(s); char *s2 = (char *) _slang_alloc(l + 1); if (s2) _mesa_strcpy(s2, s); return s2; } else { return NULL; } } /** * Don't actually free memory, but mark it (for debugging). */ void _slang_free(void *addr) { #if USE_MALLOC_FREE _mesa_free(addr); #else if (addr) { GET_CURRENT_CONTEXT(ctx); slang_mempool *pool = (slang_mempool *) ctx->Shader.MemPool; (void) pool; ASSERT(is_valid_address(pool, addr)); } #endif } 'n73' href='#n73'>73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 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/*
 * Mesa 3-D graphics library
 * Version:  5.1
 *
 * Copyright (C) 1999-2003  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
 */

/* fxdd.c - 3Dfx VooDoo Mesa device driver functions */


#ifdef HAVE_CONFIG_H
#include "conf.h"
#endif

#if defined(FX)

#include "image.h"
#include "mtypes.h"
#include "fxdrv.h"
#include "enums.h"
#include "extensions.h"
#include "macros.h"
#include "texstore.h"
#include "teximage.h"
#include "swrast/swrast.h"
#include "swrast/s_context.h"
#include "swrast_setup/swrast_setup.h"
#include "tnl/tnl.h"
#include "tnl/t_context.h"
#include "tnl/t_pipeline.h"
#include "array_cache/acache.h"



/* lookup table for scaling 4 bit colors up to 8 bits */
GLuint FX_rgb_scale_4[16] = {
   0,   17,  34,  51,  68,  85,  102, 119,
   136, 153, 170, 187, 204, 221, 238, 255
};

/* lookup table for scaling 5 bit colors up to 8 bits */
GLuint FX_rgb_scale_5[32] = {
   0,   8,   16,  25,  33,  41,  49,  58,
   66,  74,  82,  90,  99,  107, 115, 123,
   132, 140, 148, 156, 165, 173, 181, 189,
   197, 206, 214, 222, 230, 239, 247, 255
};

/* lookup table for scaling 6 bit colors up to 8 bits */
GLuint FX_rgb_scale_6[64] = {
   0,   4,   8,   12,  16,  20,  24,  28,
   32,  36,  40,  45,  49,  53,  57,  61,
   65,  69,  73,  77,  81,  85,  89,  93,
   97,  101, 105, 109, 113, 117, 121, 125,
   130, 134, 138, 142, 146, 150, 154, 158,
   162, 166, 170, 174, 178, 182, 186, 190,
   194, 198, 202, 206, 210, 215, 219, 223,
   227, 231, 235, 239, 243, 247, 251, 255
};


/*
 * Disable color by masking out R, G, B, A
 */
static void fxDisableColor (fxMesaContext fxMesa)
{
 if (fxMesa->colDepth != 16) {
    /* 32bpp mode or 15bpp mode */
    fxMesa->Glide.grColorMaskExt(FXFALSE, FXFALSE, FXFALSE, FXFALSE);
 } else {
    /* 16 bpp mode */
    grColorMask(FXFALSE, FXFALSE);
 }
}


/**********************************************************************/
/*****                 Miscellaneous functions                    *****/
/**********************************************************************/

/* Return buffer size information */
static void
fxDDBufferSize(GLframebuffer *buffer, GLuint *width, GLuint *height)
{
   GET_CURRENT_CONTEXT(ctx);
   if (ctx && FX_CONTEXT(ctx)) {
      fxMesaContext fxMesa = FX_CONTEXT(ctx);

      if (TDFX_DEBUG & VERBOSE_DRIVER) {
         fprintf(stderr, "fxDDBufferSize(...)\n");
      }

      *width = fxMesa->width;
      *height = fxMesa->height;
   }
}


/* Implements glClearColor() */
static void
fxDDClearColor(GLcontext * ctx, const GLfloat color[4])
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GLubyte col[4];

   if (TDFX_DEBUG & VERBOSE_DRIVER) {
      fprintf(stderr, "fxDDClearColor(%f, %f, %f, %f)\n",
	              color[0], color[1], color[2], color[3]);
   }

   CLAMPED_FLOAT_TO_UBYTE(col[0], color[0]);
   CLAMPED_FLOAT_TO_UBYTE(col[1], color[1]);
   CLAMPED_FLOAT_TO_UBYTE(col[2], color[2]);
   CLAMPED_FLOAT_TO_UBYTE(col[3], color[3]);

   fxMesa->clearC = FXCOLOR4(col);
   fxMesa->clearA = col[3];
}


/* Clear the color and/or depth buffers */
static void fxDDClear( GLcontext *ctx,
			GLbitfield mask, GLboolean all,
			GLint x, GLint y, GLint width, GLint height )
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GLbitfield softwareMask = mask & (DD_ACCUM_BIT);
   const GLuint stencil_size = fxMesa->haveHwStencil ? ctx->Visual.stencilBits : 0;
   const FxU32 clearD = (FxU32) (((1 << ctx->Visual.depthBits) - 1) * ctx->Depth.Clear);
   const FxU8 clearS = (FxU8) (ctx->Stencil.Clear & 0xff);

   /* [dBorca] Hack alert:
    * if we set Mesa for 32bit depth, we'll get
    * clearD == 0
    * due to 32bit integer overflow!
    */

   if ( TDFX_DEBUG & MESA_VERBOSE ) {
      fprintf( stderr, "fxDDClear( %d, %d, %d, %d )\n",
	               (int) x, (int) y, (int) width, (int) height );
   }

   /* Need this check to respond to glScissor and clipping updates */
   /* should also take care of FX_NEW_COLOR_MASK, FX_NEW_STENCIL, depth? */
   if (fxMesa->new_state & FX_NEW_SCISSOR) {
      fxSetupScissor(ctx);
      fxMesa->new_state &= ~FX_NEW_SCISSOR;
   }

   /* we can't clear accum buffers */
   mask &= ~(DD_ACCUM_BIT);

   /*
    * As per GL spec, stencil masking should be obeyed when clearing
    */
   if (mask & DD_STENCIL_BIT) {
      if (!fxMesa->haveHwStencil || fxMesa->unitsState.stencilWriteMask != 0xff) {
         /* Napalm seems to have trouble with stencil write masks != 0xff */
         /* do stencil clear in software */
         softwareMask |= DD_STENCIL_BIT;
         mask &= ~(DD_STENCIL_BIT);
      }
   }

   /*
    * As per GL spec, color masking should be obeyed when clearing
    */
   if (ctx->Visual.greenBits != 8 && ctx->Visual.greenBits != 5) {
      /* can only do color masking if running in 24/32bpp on Napalm */
      if (ctx->Color.ColorMask[RCOMP] != ctx->Color.ColorMask[GCOMP] ||
          ctx->Color.ColorMask[GCOMP] != ctx->Color.ColorMask[BCOMP]) {
         softwareMask |= (mask & (DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT));
         mask &= ~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT);
      }
   }

   if (fxMesa->haveHwStencil) {
      /*
       * If we want to clear stencil, it must be enabled
       * in the HW, even if the stencil test is not enabled
       * in the OGL state.
       */
      BEGIN_BOARD_LOCK();
      if (mask & DD_STENCIL_BIT) {
	 fxMesa->Glide.grStencilMaskExt(0xff /*fxMesa->unitsState.stencilWriteMask*/);
	 /* set stencil ref value = desired clear value */
	 fxMesa->Glide.grStencilFuncExt(GR_CMP_ALWAYS, clearS, 0xff);
	 fxMesa->Glide.grStencilOpExt(GR_STENCILOP_REPLACE,
                                   GR_STENCILOP_REPLACE, GR_STENCILOP_REPLACE);
	 grEnable(GR_STENCIL_MODE_EXT);
      }
      else {
	 grDisable(GR_STENCIL_MODE_EXT);
      }
      END_BOARD_LOCK();
   }

   /*
    * This may be ugly, but it's needed in order to work around a number
    * of Glide bugs.
    */
   BEGIN_CLIP_LOOP();
   {
      /*
       * This could probably be done fancier but doing each possible case
       * explicitly is less error prone.
       */
      switch (mask & ~DD_STENCIL_BIT) {
      case DD_BACK_LEFT_BIT | DD_DEPTH_BIT:
	 /* back buffer & depth */
	 /* FX_grColorMaskv_NoLock(ctx, true4); */ /* work around Voodoo3 bug */
	 grDepthMask(FXTRUE);
	 grRenderBuffer(GR_BUFFER_BACKBUFFER);
	 if (stencil_size > 0) {
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
         }
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 if (!fxMesa->unitsState.depthTestEnabled) {
            grDepthMask(FXFALSE);
	 }
	 break;
      case DD_FRONT_LEFT_BIT | DD_DEPTH_BIT:
	 /* XXX it appears that the depth buffer isn't cleared when
	  * glRenderBuffer(GR_BUFFER_FRONTBUFFER) is set.
	  * This is a work-around/
	  */
	 /* clear depth */
	 grDepthMask(FXTRUE);
	 grRenderBuffer(GR_BUFFER_BACKBUFFER);
         fxDisableColor(fxMesa);
	 if (stencil_size > 0)
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 /* clear front */
	 fxSetupColorMask(ctx);
	 grRenderBuffer(GR_BUFFER_FRONTBUFFER);
	 if (stencil_size > 0)
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 if (!fxMesa->unitsState.depthTestEnabled) {
            grDepthMask(FXFALSE);
	 }
	 break;
      case DD_BACK_LEFT_BIT:
	 /* back buffer only */
	 grDepthMask(FXFALSE);
	 grRenderBuffer(GR_BUFFER_BACKBUFFER);
	 if (stencil_size > 0)
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 if (fxMesa->unitsState.depthTestEnabled) {
            grDepthMask(FXTRUE);
	 }
	 break;
      case DD_FRONT_LEFT_BIT:
	 /* front buffer only */
	 grDepthMask(FXFALSE);
	 grRenderBuffer(GR_BUFFER_FRONTBUFFER);
	 if (stencil_size > 0)
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 if (fxMesa->unitsState.depthTestEnabled) {
            grDepthMask(FXTRUE);
	 }
	 break;
      case DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT:
	 /* front and back */
	 grDepthMask(FXFALSE);
	 grRenderBuffer(GR_BUFFER_BACKBUFFER);
	 if (stencil_size > 0)
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 grRenderBuffer(GR_BUFFER_FRONTBUFFER);
	 if (stencil_size > 0)
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 if (fxMesa->unitsState.depthTestEnabled) {
            grDepthMask(FXTRUE);
	 }
	 break;
      case DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT | DD_DEPTH_BIT:
	 /* clear front */
	 grDepthMask(FXFALSE);
	 grRenderBuffer(GR_BUFFER_FRONTBUFFER);
	 if (stencil_size > 0)
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 /* clear back and depth */
	 grDepthMask(FXTRUE);
	 grRenderBuffer(GR_BUFFER_BACKBUFFER);
         if (stencil_size > 0)
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 if (!fxMesa->unitsState.depthTestEnabled) {
            grDepthMask(FXFALSE);
	 }
	 break;
      case DD_DEPTH_BIT:
	 /* just the depth buffer */
	 grRenderBuffer(GR_BUFFER_BACKBUFFER);
         fxDisableColor(fxMesa);
	 grDepthMask(FXTRUE);
	 if (stencil_size > 0)
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
	 else
            grBufferClear(fxMesa->clearC,
                          fxMesa->clearA,
                          clearD);
	 fxSetupColorMask(ctx);
	 if (ctx->Color._DrawDestMask & FRONT_LEFT_BIT) {
            grRenderBuffer(GR_BUFFER_FRONTBUFFER);
         }
	 if (!fxMesa->unitsState.depthTestEnabled) {
	    grDepthMask(FXFALSE);
         }
	 break;
      default:
         /* clear no color buffers or depth buffer but might clear stencil */
	 if (stencil_size > 0 && (mask & DD_STENCIL_BIT)) {
            /* XXX need this RenderBuffer call to work around Glide bug */
            grRenderBuffer(GR_BUFFER_BACKBUFFER);
            grDepthMask(FXFALSE);
            fxDisableColor(fxMesa);
            fxMesa->Glide.grBufferClearExt(fxMesa->clearC,
                                           fxMesa->clearA,
                                           clearD, clearS);
            if (fxMesa->unitsState.depthTestEnabled) {
               grDepthMask(FXTRUE);
            }
            fxSetupColorMask(ctx);
            if (ctx->Color._DrawDestMask & FRONT_LEFT_BIT) {
               grRenderBuffer(GR_BUFFER_FRONTBUFFER);
            }
         }
      }
   }
   END_CLIP_LOOP();

   if (fxMesa->haveHwStencil && (mask & DD_STENCIL_BIT)) {
      /* We changed the stencil state above.  Signal that we need to
       * upload it again.
       */
      fxMesa->new_state |= FX_NEW_STENCIL;
   }

   if (softwareMask)
      _swrast_Clear( ctx, softwareMask, all, x, y, width, height );
}


/* Set the buffer used for drawing */
/* XXX support for separate read/draw buffers hasn't been tested */
static void
fxDDSetDrawBuffer(GLcontext * ctx, GLenum mode)
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);

   if (TDFX_DEBUG & VERBOSE_DRIVER) {
      fprintf(stderr, "fxDDSetDrawBuffer(%x)\n", (int)mode);
   }

   if (mode == GL_FRONT_LEFT) {
      fxMesa->currentFB = GR_BUFFER_FRONTBUFFER;
      grRenderBuffer(fxMesa->currentFB);
   }
   else if (mode == GL_BACK_LEFT) {
      fxMesa->currentFB = GR_BUFFER_BACKBUFFER;
      grRenderBuffer(fxMesa->currentFB);
   }
   else if (mode == GL_NONE) {
      fxDisableColor(fxMesa);
   }
   else {
      /* we'll need a software fallback */
      /* XXX not implemented */
   }

   /* update s/w fallback state */
   _swrast_DrawBuffer(ctx, mode);
}


static void
fxDDDrawBitmap2 (GLcontext *ctx, GLint px, GLint py,
		 GLsizei width, GLsizei height,
		 const struct gl_pixelstore_attrib *unpack,
		 const GLubyte *bitmap)
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   SWcontext *swrast = SWRAST_CONTEXT(ctx);
   GrLfbInfo_t info;
   GrLfbWriteMode_t mode;
   FxU16 color;
   const struct gl_pixelstore_attrib *finalUnpack;
   struct gl_pixelstore_attrib scissoredUnpack;

   /* check if there's any raster operations enabled which we can't handle */
   if ((swrast->_RasterMask & (ALPHATEST_BIT |
			      /*BLEND_BIT |*/   /* blending ok, through pixpipe */
			      DEPTH_BIT |       /* could be done with RGB:DEPTH */
			      FOG_BIT |         /* could be done with RGB:DEPTH */
			      LOGIC_OP_BIT |
			      /*CLIP_BIT |*/    /* clipping ok, below */
			      STENCIL_BIT |
			      /*MASKING_BIT |*/ /* masking ok, test follows */
			      ALPHABUF_BIT |    /* nope! see 565 span kludge */
			      MULTI_DRAW_BIT |
			      OCCLUSION_BIT |   /* nope! at least not yet */
			      TEXTURE_BIT |
			      FRAGPROG_BIT))
       ||
       ((swrast->_RasterMask & MASKING_BIT) /*&& (ctx->Visual.greenBits != 8)*/ && (ctx->Visual.greenBits != 5))
      ) {
      _swrast_Bitmap(ctx, px, py, width, height, unpack, bitmap);
      return;
   }

   /* make sure the pixelpipe is configured correctly */
   fxSetupFXUnits(ctx);

   if (ctx->Scissor.Enabled) {
      /* This is a bit tricky, but by carefully adjusting the px, py,
       * width, height, skipPixels and skipRows values we can do
       * scissoring without special code in the rendering loop.
       */

      /* we'll construct a new pixelstore struct */
      finalUnpack = &scissoredUnpack;
      scissoredUnpack = *unpack;
      if (scissoredUnpack.RowLength == 0)
	 scissoredUnpack.RowLength = width;

      /* clip left */
      if (px < ctx->Scissor.X) {
	 scissoredUnpack.SkipPixels += (ctx->Scissor.X - px);
	 width -= (ctx->Scissor.X - px);
	 px = ctx->Scissor.X;
      }
      /* clip right */
      if (px + width >= ctx->Scissor.X + ctx->Scissor.Width) {
	 width -= (px + width - (ctx->Scissor.X + ctx->Scissor.Width));
      }
      /* clip bottom */
      if (py < ctx->Scissor.Y) {
	 scissoredUnpack.SkipRows += (ctx->Scissor.Y - py);
	 height -= (ctx->Scissor.Y - py);
	 py = ctx->Scissor.Y;
      }
      /* clip top */
      if (py + height >= ctx->Scissor.Y + ctx->Scissor.Height) {
	 height -= (py + height - (ctx->Scissor.Y + ctx->Scissor.Height));
      }

      if (width <= 0 || height <= 0)
	 return;
   }
   else {
      finalUnpack = unpack;
   }

   /* compute pixel value */
   {
      GLint r = (GLint) (ctx->Current.RasterColor[RCOMP] * 255.0f);
      GLint g = (GLint) (ctx->Current.RasterColor[GCOMP] * 255.0f);
      GLint b = (GLint) (ctx->Current.RasterColor[BCOMP] * 255.0f);
      GLint a = (GLint) (ctx->Current.RasterColor[ACOMP] * 255.0f);
      if (fxMesa->colDepth == 15) {
         color = TDFXPACKCOLOR1555(b, g, r, a);
         mode = GR_LFBWRITEMODE_1555;
      } else {
         color = fxMesa->bgrOrder ? TDFXPACKCOLOR565(r, g, b) : TDFXPACKCOLOR565(b, g, r);
         mode = GR_LFBWRITEMODE_565;
      }
   }

   info.size = sizeof(info);
   if (!grLfbLock(GR_LFB_WRITE_ONLY,
		  fxMesa->currentFB,
		  mode,
		  GR_ORIGIN_UPPER_LEFT, FXTRUE, &info)) {
      _swrast_Bitmap(ctx, px, py, width, height, unpack, bitmap);
      return;
   }

   {
      const GLint winX = 0;
      const GLint winY = fxMesa->height - 1;
      /* The dest stride depends on the hardware and whether we're drawing
       * to the front or back buffer.  This compile-time test seems to do
       * the job for now.
       */
      const GLint dstStride = info.strideInBytes / 2;	/* stride in GLushorts */

      GLint row;
      /* compute dest address of bottom-left pixel in bitmap */
      GLushort *dst = (GLushort *) info.lfbPtr
	 + (winY - py) * dstStride + (winX + px);

      for (row = 0; row < height; row++) {
	 const GLubyte *src =
	    (const GLubyte *) _mesa_image_address(finalUnpack,
						  bitmap, width, height,
						  GL_COLOR_INDEX, GL_BITMAP,
						  0, row, 0);
	 if (finalUnpack->LsbFirst) {
	    /* least significan bit first */
	    GLubyte mask = 1U << (finalUnpack->SkipPixels & 0x7);
	    GLint col;
	    for (col = 0; col < width; col++) {
	       if (*src & mask) {
		  dst[col] = color;
	       }
	       if (mask == 128U) {
		  src++;
		  mask = 1U;
	       }
	       else {
		  mask = mask << 1;
	       }
	    }
	    if (mask != 1)
	       src++;
	 }
	 else {
	    /* most significan bit first */
	    GLubyte mask = 128U >> (finalUnpack->SkipPixels & 0x7);
	    GLint col;
	    for (col = 0; col < width; col++) {
	       if (*src & mask) {
		  dst[col] = color;
	       }
	       if (mask == 1U) {
		  src++;
		  mask = 128U;
	       }
	       else {
		  mask = mask >> 1;
	       }
	    }
	    if (mask != 128)
	       src++;
	 }
	 dst -= dstStride;
      }
   }

   grLfbUnlock(GR_LFB_WRITE_ONLY, fxMesa->currentFB);
}

static void
fxDDDrawBitmap4 (GLcontext *ctx, GLint px, GLint py,
		 GLsizei width, GLsizei height,
		 const struct gl_pixelstore_attrib *unpack,
		 const GLubyte *bitmap)
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   SWcontext *swrast = SWRAST_CONTEXT(ctx);
   GrLfbInfo_t info;
   FxU32 color;
   const struct gl_pixelstore_attrib *finalUnpack;
   struct gl_pixelstore_attrib scissoredUnpack;

   /* check if there's any raster operations enabled which we can't handle */
   if ((swrast->_RasterMask & (ALPHATEST_BIT |
			      /*BLEND_BIT |*/   /* blending ok, through pixpipe */
			      DEPTH_BIT |       /* could be done with RGB:DEPTH */
			      FOG_BIT |         /* could be done with RGB:DEPTH */
			      LOGIC_OP_BIT |
			      /*CLIP_BIT |*/    /* clipping ok, below */
			      STENCIL_BIT |
			      /*MASKING_BIT |*/ /* masking ok, we're in 32bpp */
			      /*ALPHABUF_BIT |*//* alpha ok, we're in 32bpp */
			      MULTI_DRAW_BIT |
			      OCCLUSION_BIT |   /* nope! at least not yet */
			      TEXTURE_BIT |
			      FRAGPROG_BIT))
      ) {
      _swrast_Bitmap(ctx, px, py, width, height, unpack, bitmap);
      return;
   }

   /* make sure the pixelpipe is configured correctly */
   fxSetupFXUnits(ctx);

   if (ctx->Scissor.Enabled) {
      /* This is a bit tricky, but by carefully adjusting the px, py,
       * width, height, skipPixels and skipRows values we can do
       * scissoring without special code in the rendering loop.
       */

      /* we'll construct a new pixelstore struct */
      finalUnpack = &scissoredUnpack;
      scissoredUnpack = *unpack;
      if (scissoredUnpack.RowLength == 0)
	 scissoredUnpack.RowLength = width;

      /* clip left */
      if (px < ctx->Scissor.X) {
	 scissoredUnpack.SkipPixels += (ctx->Scissor.X - px);
	 width -= (ctx->Scissor.X - px);
	 px = ctx->Scissor.X;
      }
      /* clip right */
      if (px + width >= ctx->Scissor.X + ctx->Scissor.Width) {
	 width -= (px + width - (ctx->Scissor.X + ctx->Scissor.Width));
      }
      /* clip bottom */
      if (py < ctx->Scissor.Y) {
	 scissoredUnpack.SkipRows += (ctx->Scissor.Y - py);
	 height -= (ctx->Scissor.Y - py);
	 py = ctx->Scissor.Y;
      }
      /* clip top */
      if (py + height >= ctx->Scissor.Y + ctx->Scissor.Height) {
	 height -= (py + height - (ctx->Scissor.Y + ctx->Scissor.Height));
      }

      if (width <= 0 || height <= 0)
	 return;
   }
   else {
      finalUnpack = unpack;
   }

   /* compute pixel value */
   {
      GLint r = (GLint) (ctx->Current.RasterColor[RCOMP] * 255.0f);
      GLint g = (GLint) (ctx->Current.RasterColor[GCOMP] * 255.0f);
      GLint b = (GLint) (ctx->Current.RasterColor[BCOMP] * 255.0f);
      GLint a = (GLint) (ctx->Current.RasterColor[ACOMP] * 255.0f);
      color = TDFXPACKCOLOR8888(b, g, r, a);
   }

   info.size = sizeof(info);
   if (!grLfbLock(GR_LFB_WRITE_ONLY,
		  fxMesa->currentFB,
		  GR_LFBWRITEMODE_8888,
		  GR_ORIGIN_UPPER_LEFT, FXTRUE, &info)) {
      _swrast_Bitmap(ctx, px, py, width, height, unpack, bitmap);
      return;
   }

   {
      const GLint winX = 0;
      const GLint winY = fxMesa->height - 1;
      /* The dest stride depends on the hardware and whether we're drawing
       * to the front or back buffer.  This compile-time test seems to do
       * the job for now.
       */
      const GLint dstStride = info.strideInBytes / 4;	/* stride in GLuints */

      GLint row;
      /* compute dest address of bottom-left pixel in bitmap */
      GLuint *dst = (GLuint *) info.lfbPtr
	 + (winY - py) * dstStride + (winX + px);

      for (row = 0; row < height; row++) {
	 const GLubyte *src =
	    (const GLubyte *) _mesa_image_address(finalUnpack,
						  bitmap, width, height,
						  GL_COLOR_INDEX, GL_BITMAP,
						  0, row, 0);
	 if (finalUnpack->LsbFirst) {
	    /* least significan bit first */
	    GLubyte mask = 1U << (finalUnpack->SkipPixels & 0x7);
	    GLint col;
	    for (col = 0; col < width; col++) {
	       if (*src & mask) {
		  dst[col] = color;
	       }
	       if (mask == 128U) {
		  src++;
		  mask = 1U;
	       }
	       else {
		  mask = mask << 1;
	       }
	    }
	    if (mask != 1)
	       src++;
	 }
	 else {
	    /* most significan bit first */
	    GLubyte mask = 128U >> (finalUnpack->SkipPixels & 0x7);
	    GLint col;
	    for (col = 0; col < width; col++) {
	       if (*src & mask) {
		  dst[col] = color;
	       }
	       if (mask == 1U) {
		  src++;
		  mask = 128U;
	       }
	       else {
		  mask = mask >> 1;
	       }
	    }
	    if (mask != 128)
	       src++;
	 }
	 dst -= dstStride;
      }
   }

   grLfbUnlock(GR_LFB_WRITE_ONLY, fxMesa->currentFB);
}


static void
fxDDReadPixels565 (GLcontext * ctx,
		   GLint x, GLint y,
		   GLsizei width, GLsizei height,
		   GLenum format, GLenum type,
		   const struct gl_pixelstore_attrib *packing,
		   GLvoid *dstImage)
{
   if (ctx->_ImageTransferState/* & (IMAGE_SCALE_BIAS_BIT|IMAGE_MAP_COLOR_BIT)*/) {
      _swrast_ReadPixels(ctx, x, y, width, height, format, type,
			 packing, dstImage);
      return;
   }
   else {
      fxMesaContext fxMesa = FX_CONTEXT(ctx);
      GrLfbInfo_t info;

      BEGIN_BOARD_LOCK();
      info.size = sizeof(info);
      if (grLfbLock(GR_LFB_READ_ONLY,
		    fxMesa->currentFB,
		    GR_LFBWRITEMODE_ANY,
		    GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
	 const GLint winX = 0;
	 const GLint winY = fxMesa->height - 1;
	 const GLint srcStride = info.strideInBytes / 2;	/* stride in GLushorts */
	 const GLushort *src = (const GLushort *) info.lfbPtr
	    + (winY - y) * srcStride + (winX + x);
	 GLubyte *dst = (GLubyte *) _mesa_image_address(packing, dstImage,
							width, height, format,
							type, 0, 0, 0);
	 GLint dstStride =
	    _mesa_image_row_stride(packing, width, format, type);

	 if (format == GL_RGB && type == GL_UNSIGNED_BYTE) {
	    /* convert 5R6G5B into 8R8G8B */
	    GLint row, col;
	    const GLint halfWidth = width >> 1;
	    const GLint extraPixel = (width & 1);
	    for (row = 0; row < height; row++) {
	       GLubyte *d = dst;
	       for (col = 0; col < halfWidth; col++) {
		  const GLuint pixel = ((const GLuint *) src)[col];
                  *d++ = FX_rgb_scale_5[(pixel >> 11) & 0x1f];
                  *d++ = FX_rgb_scale_6[(pixel >> 5)  & 0x3f];
                  *d++ = FX_rgb_scale_5[ pixel        & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >> 27) & 0x1f];
                  *d++ = FX_rgb_scale_6[(pixel >> 21) & 0x3f];
                  *d++ = FX_rgb_scale_5[(pixel >> 16) & 0x1f];
	       }
	       if (extraPixel) {
		  GLushort pixel = src[width - 1];
                  *d++ = FX_rgb_scale_5[(pixel >> 11) & 0x1f];
                  *d++ = FX_rgb_scale_6[(pixel >> 5)  & 0x3f];
                  *d++ = FX_rgb_scale_5[ pixel        & 0x1f];
	       }
	       dst += dstStride;
	       src -= srcStride;
	    }
	 }
	 else if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
	    /* convert 5R6G5B into 8R8G8B8A */
	    GLint row, col;
	    const GLint halfWidth = width >> 1;
	    const GLint extraPixel = (width & 1);
	    for (row = 0; row < height; row++) {
	       GLubyte *d = dst;
	       for (col = 0; col < halfWidth; col++) {
		  const GLuint pixel = ((const GLuint *) src)[col];
                  *d++ = FX_rgb_scale_5[(pixel >> 11) & 0x1f];
                  *d++ = FX_rgb_scale_6[(pixel >> 5)  & 0x3f];
                  *d++ = FX_rgb_scale_5[ pixel        & 0x1f];
		  *d++ = 255;
                  *d++ = FX_rgb_scale_5[(pixel >> 27) & 0x1f];
                  *d++ = FX_rgb_scale_6[(pixel >> 21) & 0x3f];
                  *d++ = FX_rgb_scale_5[(pixel >> 16) & 0x1f];
		  *d++ = 255;
	       }
	       if (extraPixel) {
		  const GLushort pixel = src[width - 1];
                  *d++ = FX_rgb_scale_5[(pixel >> 11) & 0x1f];
                  *d++ = FX_rgb_scale_6[(pixel >> 5)  & 0x3f];
                  *d++ = FX_rgb_scale_5[ pixel        & 0x1f];
		  *d++ = 255;
	       }
	       dst += dstStride;
	       src -= srcStride;
	    }
	 }
	 else if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
	    /* directly memcpy 5R6G5B pixels into client's buffer */
	    const GLint widthInBytes = width * 2;
	    GLint row;
	    for (row = 0; row < height; row++) {
	       MEMCPY(dst, src, widthInBytes);
	       dst += dstStride;
	       src -= srcStride;
	    }
	 }
	 else {
	    grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
	    END_BOARD_LOCK();
	    _swrast_ReadPixels(ctx, x, y, width, height, format, type,
			       packing, dstImage);
	    return;
	 }

	 grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
      }
      END_BOARD_LOCK();
   }
}

static void
fxDDReadPixels555 (GLcontext * ctx,
		   GLint x, GLint y,
		   GLsizei width, GLsizei height,
		   GLenum format, GLenum type,
		   const struct gl_pixelstore_attrib *packing,
		   GLvoid *dstImage)
{
   if (ctx->_ImageTransferState/* & (IMAGE_SCALE_BIAS_BIT|IMAGE_MAP_COLOR_BIT)*/) {
      _swrast_ReadPixels(ctx, x, y, width, height, format, type,
			 packing, dstImage);
      return;
   }
   else {
      fxMesaContext fxMesa = FX_CONTEXT(ctx);
      GrLfbInfo_t info;

      BEGIN_BOARD_LOCK();
      info.size = sizeof(info);
      if (grLfbLock(GR_LFB_READ_ONLY,
		    fxMesa->currentFB,
		    GR_LFBWRITEMODE_ANY,
		    GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
	 const GLint winX = 0;
	 const GLint winY = fxMesa->height - 1;
	 const GLint srcStride = info.strideInBytes / 2;	/* stride in GLushorts */
	 const GLushort *src = (const GLushort *) info.lfbPtr
	    + (winY - y) * srcStride + (winX + x);
	 GLubyte *dst = (GLubyte *) _mesa_image_address(packing, dstImage,
							width, height, format,
							type, 0, 0, 0);
	 GLint dstStride =
	    _mesa_image_row_stride(packing, width, format, type);

	 if (format == GL_RGB && type == GL_UNSIGNED_BYTE) {
	    /* convert 5R5G5B into 8R8G8B */
	    GLint row, col;
	    const GLint halfWidth = width >> 1;
	    const GLint extraPixel = (width & 1);
	    for (row = 0; row < height; row++) {
	       GLubyte *d = dst;
	       for (col = 0; col < halfWidth; col++) {
		  const GLuint pixel = ((const GLuint *) src)[col];
                  *d++ = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >> 5)  & 0x1f];
                  *d++ = FX_rgb_scale_5[ pixel        & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >> 26) & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >> 21) & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >> 16) & 0x1f];
	       }
	       if (extraPixel) {
		  GLushort pixel = src[width - 1];
                  *d++ = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >> 5)  & 0x1f];
                  *d++ = FX_rgb_scale_5[ pixel        & 0x1f];
	       }
	       dst += dstStride;
	       src -= srcStride;
	    }
	 }
	 else if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
	    /* convert 5R6G5B into 8R8G8B8A */
	    GLint row, col;
	    const GLint halfWidth = width >> 1;
	    const GLint extraPixel = (width & 1);
	    for (row = 0; row < height; row++) {
	       GLubyte *d = dst;
	       for (col = 0; col < halfWidth; col++) {
		  const GLuint pixel = ((const GLuint *) src)[col];
                  *d++ = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >>  5) & 0x1f];
                  *d++ = FX_rgb_scale_5[ pixel        & 0x1f];
		  *d++ =  (pixel & 0x8000) ? 255 : 0;
                  *d++ = FX_rgb_scale_5[(pixel >> 26) & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >> 21) & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >> 16) & 0x1f];
		  *d++ =  (pixel & 0x80000000) ? 255 : 0;
	       }
	       if (extraPixel) {
		  const GLushort pixel = src[width - 1];
                  *d++ = FX_rgb_scale_5[(pixel >> 10) & 0x1f];
                  *d++ = FX_rgb_scale_5[(pixel >>  5) & 0x1f];
                  *d++ = FX_rgb_scale_5[ pixel        & 0x1f];
		  *d++ =  (pixel & 0x8000) ? 255 : 0;
	       }
	       dst += dstStride;
	       src -= srcStride;
	    }
	 }
	 else if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
	    /* directly memcpy 5R5G5B pixels into client's buffer */
	    const GLint widthInBytes = width * 2;
	    GLint row;
	    for (row = 0; row < height; row++) {
	       MEMCPY(dst, src, widthInBytes);
	       dst += dstStride;
	       src -= srcStride;
	    }
	 }
	 else {
	    grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
	    END_BOARD_LOCK();
	    _swrast_ReadPixels(ctx, x, y, width, height, format, type,
			       packing, dstImage);
	    return;
	 }

	 grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
      }
      END_BOARD_LOCK();
   }
}

static void
fxDDReadPixels8888 (GLcontext * ctx,
		    GLint x, GLint y,
		    GLsizei width, GLsizei height,
		    GLenum format, GLenum type,
		    const struct gl_pixelstore_attrib *packing,
		    GLvoid *dstImage)
{
   if (ctx->_ImageTransferState/* & (IMAGE_SCALE_BIAS_BIT|IMAGE_MAP_COLOR_BIT)*/) {
      _swrast_ReadPixels(ctx, x, y, width, height, format, type,
			 packing, dstImage);
      return;
   }
   else {
      fxMesaContext fxMesa = FX_CONTEXT(ctx);
      GrLfbInfo_t info;

      BEGIN_BOARD_LOCK();
      info.size = sizeof(info);
      if (grLfbLock(GR_LFB_READ_ONLY,
		    fxMesa->currentFB,
		    GR_LFBWRITEMODE_ANY,
		    GR_ORIGIN_UPPER_LEFT, FXFALSE, &info)) {
	 const GLint winX = 0;
	 const GLint winY = fxMesa->height - 1;
	 const GLint srcStride = info.strideInBytes / 4;	/* stride in GLuints */
	 const GLuint *src = (const GLuint *) info.lfbPtr
	    + (winY - y) * srcStride + (winX + x);
	 GLubyte *dst = (GLubyte *) _mesa_image_address(packing, dstImage,
							width, height, format,
							type, 0, 0, 0);
	 GLint dstStride =
	    _mesa_image_row_stride(packing, width, format, type);

	 if (format == GL_RGB && type == GL_UNSIGNED_BYTE) {
	    /* convert 8A8R8G8B into 8R8G8B */
	    GLint row, col;
	    for (row = 0; row < height; row++) {
	       GLubyte *d = dst;
	       for (col = 0; col < width; col++) {
		  const GLuint pixel = ((const GLuint *) src)[col];
                  *d++ = pixel >> 16;
                  *d++ = pixel >> 8;
                  *d++ = pixel;
	       }
	       dst += dstStride;
	       src -= srcStride;
	    }
	 }
	 else if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
	    /* 8A8R8G8B pixels into client's buffer */
	    GLint row, col;
	    for (row = 0; row < height; row++) {
	       GLubyte *d = dst;
	       for (col = 0; col < width; col++) {
		  const GLuint pixel = ((const GLuint *) src)[col];
                  *d++ = pixel >> 16;
                  *d++ = pixel >> 8;
                  *d++ = pixel;
                  *d++ = pixel >> 24;
	       }
	       dst += dstStride;
	       src -= srcStride;
	    }
	 }
	 else if (format == GL_RGB && type == GL_UNSIGNED_SHORT_5_6_5) {
	    /* convert 8A8R8G8B into 5R6G5B */
	    GLint row, col;
	    for (row = 0; row < height; row++) {
	       GLushort *d = (GLushort *)dst;
	       for (col = 0; col < width; col++) {
		  const GLuint pixel = ((const GLuint *) src)[col];
                  *d++ = (((pixel >> 16) & 0xf8) << 8) |
                         (((pixel >>  8) & 0xfc) << 3) |
                          ((pixel        & 0xf8) >> 3);
	       }
	       dst += dstStride;
	       src -= srcStride;
	    }
	 }
	 else {
	    grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
	    END_BOARD_LOCK();
	    _swrast_ReadPixels(ctx, x, y, width, height, format, type,
			       packing, dstImage);
	    return;
	 }

	 grLfbUnlock(GR_LFB_READ_ONLY, fxMesa->currentFB);
      }
      END_BOARD_LOCK();
   }
}


/* [dBorca] Hack alert:
 * not finished!!!
 * revise fallback tests and fix scissor; implement new formats
 * also write its siblings: 565 and 1555
 */
void
fxDDDrawPixels8888 (GLcontext * ctx, GLint x, GLint y,
                    GLsizei width, GLsizei height,
                    GLenum format, GLenum type,
                    const struct gl_pixelstore_attrib *unpack,
                    const GLvoid * pixels)
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   GrLfbInfo_t info;

   if (ctx->Pixel.ZoomX != 1.0F ||
       ctx->Pixel.ZoomY != 1.0F ||
       (ctx->_ImageTransferState & (IMAGE_SCALE_BIAS_BIT|
				    IMAGE_MAP_COLOR_BIT)) ||
       ctx->Color.AlphaEnabled ||
       ctx->Depth.Test ||
       ctx->Fog.Enabled ||
       ctx->Scissor.Enabled ||
       ctx->Stencil.Enabled ||
       !ctx->Color.ColorMask[0] ||
       !ctx->Color.ColorMask[1] ||
       !ctx->Color.ColorMask[2] ||
       !ctx->Color.ColorMask[3] ||
       ctx->Color.ColorLogicOpEnabled ||
       ctx->Texture._EnabledUnits ||
       ctx->Depth.OcclusionTest ||
       fxMesa->fallback)
   {
      _swrast_DrawPixels( ctx, x, y, width, height, format, type, 
			  unpack, pixels );
      return; 
   }

   /* lock early to make sure cliprects are right */
   BEGIN_BOARD_LOCK();

   /* make sure the pixelpipe is configured correctly */
   fxSetupFXUnits(ctx);

   /* look for clipmasks, giveup if region obscured */
#if 0
   if (ctx->Color.DrawBuffer == GL_FRONT) {
      if (!inClipRects_Region(fxMesa, scrX, scrY, width, height)) {
         END_BOARD_LOCK(fxMesa);
         _swrast_DrawPixels(ctx, x, y, width, height, format, type, unpack, pixels);
         return;
      }
   }
#endif

   info.size = sizeof(info);
   if (!grLfbLock(GR_LFB_WRITE_ONLY,
                  fxMesa->currentFB,
                  GR_LFBWRITEMODE_8888,
                  GR_ORIGIN_UPPER_LEFT, FXTRUE, &info)) {
      _swrast_DrawPixels(ctx, x, y, width, height, format, type, unpack, pixels);
      return;
   }

   {
      const GLint winX = 0;
      const GLint winY = fxMesa->height - 1;

      const GLint dstStride = info.strideInBytes / 4;	/* stride in GLuints */
      GLuint *dst = (GLuint *) info.lfbPtr + (winY - y) * dstStride + (winX + x);
      const GLubyte *src = (GLubyte *)_mesa_image_address(unpack, pixels,
							width, height, format,
							type, 0, 0, 0);
      const GLint srcStride = _mesa_image_row_stride(unpack, width, format, type);

      if (format == GL_RGBA && type == GL_UNSIGNED_BYTE) {
         /* directly memcpy 8A8R8G8B pixels to screen */
         const GLint widthInBytes = width * 4;
         GLint row;
         for (row = 0; row < height; row++) {
             MEMCPY(dst, src, widthInBytes);
             dst -= dstStride;
             src += srcStride;
         }
      }
      else {
         grLfbUnlock(GR_LFB_WRITE_ONLY, fxMesa->currentFB);
         END_BOARD_LOCK();
         _swrast_DrawPixels(ctx, x, y, width, height, format, type, unpack, pixels);
         return;
      }

   }

   grLfbUnlock(GR_LFB_WRITE_ONLY, fxMesa->currentFB);
   END_BOARD_LOCK();
}


static void
fxDDFinish(GLcontext * ctx)
{
   grFlush();
}





/* KW: Put the word Mesa in the render string because quakeworld
 * checks for this rather than doing a glGet(GL_MAX_TEXTURE_SIZE).
 * Why?
 */
static const GLubyte *
fxDDGetString(GLcontext * ctx, GLenum name)
{
 fxMesaContext fxMesa = FX_CONTEXT(ctx);

 switch (name) {
        case GL_RENDERER:
             return (GLubyte *)fxMesa->rendererString;
#if __WIN32__ /* hack to advertise vanilla extension names */
        case GL_EXTENSIONS:
             if (ctx->Extensions.String == NULL) {
                GLubyte *ext = _mesa_make_extension_string(ctx);
                if (ext != NULL) {
                   ctx->Extensions.String = _mesa_malloc(strlen((char *)ext) + 256);
                   if (ctx->Extensions.String != NULL) {
                      strcpy((char *)ctx->Extensions.String, (char *)ext);
                      /* put any additional extension names here */
#if 0
                      strcat((char *)ctx->Extensions.String, " 3DFX_set_global_palette");
#endif
#if __WIN32__
                      strcat((char *)ctx->Extensions.String, " WGL_3DFX_gamma_control");
                      strcat((char *)ctx->Extensions.String, " WGL_EXT_swap_control");
                      strcat((char *)ctx->Extensions.String, " WGL_EXT_extensions_string WGL_ARB_extensions_string");
#endif
                      /* put any additional extension names here */
                      _mesa_free(ext);
                   } else {
                      ctx->Extensions.String = ext;
                   }
                }
             }
             return ctx->Extensions.String;
#endif
        default:
             return NULL;
 }
}

static const struct tnl_pipeline_stage *fx_pipeline[] = {
   &_tnl_vertex_transform_stage,	/* TODO: Add the fastpath here */
   &_tnl_normal_transform_stage,
   &_tnl_lighting_stage,
   /*&_tnl_fog_coordinate_stage,*/	/* TODO: Omit fog stage ZZZ ZZZ ZZZ */
   &_tnl_texgen_stage,
   &_tnl_texture_transform_stage,
   &_tnl_point_attenuation_stage,
   &_tnl_render_stage,
   0,
};




int
fxDDInitFxMesaContext(fxMesaContext fxMesa)
{
   int i;
   GLcontext *ctx = fxMesa->glCtx;

   FX_setupGrVertexLayout();

   fxMesa->color = 0xffffffff;
   fxMesa->clearC = 0;
   fxMesa->clearA = 0;

   fxMesa->stats.swapBuffer = 0;
   fxMesa->stats.reqTexUpload = 0;
   fxMesa->stats.texUpload = 0;
   fxMesa->stats.memTexUpload = 0;

   fxMesa->tmuSrc = FX_TMU_NONE;
   fxMesa->lastUnitsMode = FX_UM_NONE;
   fxTMInit(fxMesa);

   /* FX units setup */

   fxMesa->unitsState.alphaTestEnabled = GL_FALSE;
   fxMesa->unitsState.alphaTestFunc = GL_ALWAYS;
   fxMesa->unitsState.alphaTestRefValue = 0.0;

   fxMesa->unitsState.blendEnabled = GL_FALSE;
   fxMesa->unitsState.blendSrcFuncRGB = GR_BLEND_ONE;
   fxMesa->unitsState.blendDstFuncRGB = GR_BLEND_ZERO;
   fxMesa->unitsState.blendSrcFuncAlpha = GR_BLEND_ONE;
   fxMesa->unitsState.blendDstFuncAlpha = GR_BLEND_ZERO;
   fxMesa->unitsState.blendEq = GR_BLEND_OP_ADD;

   fxMesa->unitsState.depthTestEnabled = GL_FALSE;
   fxMesa->unitsState.depthMask = GL_TRUE;
   fxMesa->unitsState.depthTestFunc = GL_LESS;
   fxMesa->unitsState.depthBias = 0;

   fxMesa->unitsState.stencilWriteMask = 0xff;

   if (fxMesa->colDepth != 16) {
      /* 32bpp mode or 15bpp mode */
      fxMesa->Glide.grColorMaskExt(FXTRUE, FXTRUE, FXTRUE, fxMesa->haveHwAlpha);
   } else {
      /* 16 bpp mode */
      grColorMask(FXTRUE, fxMesa->haveHwAlpha);
   }

   fxMesa->currentFB = fxMesa->haveDoubleBuffer ? GR_BUFFER_BACKBUFFER : GR_BUFFER_FRONTBUFFER;
   grRenderBuffer(fxMesa->currentFB);

   fxMesa->state = MALLOC(FX_grGetInteger(GR_GLIDE_STATE_SIZE));
   fxMesa->fogTable = (GrFog_t *) MALLOC(FX_grGetInteger(GR_FOG_TABLE_ENTRIES) *
			     sizeof(GrFog_t));

   if (!fxMesa->state || !fxMesa->fogTable) {
      if (fxMesa->state)
	 FREE(fxMesa->state);
      if (fxMesa->fogTable)
	 FREE(fxMesa->fogTable);
      return 0;
   }

   if (fxMesa->haveZBuffer)
      grDepthBufferMode(GR_DEPTHBUFFER_ZBUFFER);

   if (!fxMesa->bgrOrder) {
      grLfbWriteColorFormat(GR_COLORFORMAT_ABGR);
   }

   fxMesa->textureAlign = FX_grGetInteger(GR_TEXTURE_ALIGN);
   /* [koolsmoky] */
   {
    char *env;
    int textureLevels = 0;
    int textureSize = FX_grGetInteger(GR_MAX_TEXTURE_SIZE);
    do {
        textureLevels++;
    } while ((textureSize >>= 0x1) & 0x7ff);
    fxMesa->textureMaxLod = textureLevels - 1;
    ctx->Const.MaxTextureLevels = textureLevels;
    if ((env = getenv("MESA_FX_MAXLOD")) != NULL) {
       int maxLevels = atoi(env) + 1;
       if ((maxLevels <= MAX_TEXTURE_LEVELS) && (maxLevels > textureLevels)) {
          ctx->Const.MaxTextureLevels = maxLevels;
       }
    }
   }
   ctx->Const.MaxTextureCoordUnits =
   ctx->Const.MaxTextureImageUnits = fxMesa->haveTwoTMUs ? 2 : 1;
   ctx->Const.MaxTextureUnits = MAX2(ctx->Const.MaxTextureImageUnits, ctx->Const.MaxTextureCoordUnits);
   
   fxMesa->new_state = _NEW_ALL;
   if (!fxMesa->haveHwStencil) {
      /* don't touch stencil if there is none */
      fxMesa->new_state &= ~FX_NEW_STENCIL;
   }

   /* Initialize the software rasterizer and helper modules.
    */
   _swrast_CreateContext(ctx);
   _ac_CreateContext(ctx);
   _tnl_CreateContext(ctx);
   _swsetup_CreateContext(ctx);

   /* Install customized pipeline */
   _tnl_destroy_pipeline(ctx);
   _tnl_install_pipeline(ctx, fx_pipeline);

   fxAllocVB(ctx);

   fxSetupDDPointers(ctx);
   fxDDInitTriFuncs(ctx);

   /* Tell the software rasterizer to use pixel fog always.
    */
   _swrast_allow_vertex_fog(ctx, GL_FALSE);
   _swrast_allow_pixel_fog(ctx, GL_TRUE);

   /* Tell tnl not to calculate or use vertex fog factors.  (Needed to
    * tell render stage not to clip fog coords).
    */
/*     _tnl_calculate_vertex_fog( ctx, GL_FALSE ); */

   fxDDInitExtensions(ctx);

#if 0
   /* [dBorca] Hack alert:
    * do we want dither? It just looks bad...
    */
   grEnable(GR_ALLOW_MIPMAP_DITHER);
   grTexNccTable(GR_NCCTABLE_NCC0); /* set this once... no multipass */
#endif
   grGlideGetState((GrState *) fxMesa->state);

   return 1;
}

/* Undo the above.
 */
void
fxDDDestroyFxMesaContext(fxMesaContext fxMesa)
{
   _swsetup_DestroyContext(fxMesa->glCtx);
   _tnl_DestroyContext(fxMesa->glCtx);
   _ac_DestroyContext(fxMesa->glCtx);
   _swrast_DestroyContext(fxMesa->glCtx);

   if (fxMesa->state)
      FREE(fxMesa->state);
   if (fxMesa->fogTable)
      FREE(fxMesa->fogTable);
   fxTMClose(fxMesa);
   fxFreeVB(fxMesa->glCtx);
}




void
fxDDInitExtensions(GLcontext * ctx)
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);

#if 1 /* multipass ColorSum stage */
   _mesa_enable_extension(ctx, "GL_EXT_secondary_color");
#endif

   _mesa_enable_extension(ctx, "GL_EXT_point_parameters");
   _mesa_enable_extension(ctx, "GL_EXT_paletted_texture");
   _mesa_enable_extension(ctx, "GL_EXT_texture_lod_bias");
   _mesa_enable_extension(ctx, "GL_EXT_shared_texture_palette");
   _mesa_enable_extension(ctx, "GL_EXT_blend_func_separate");

   if (fxMesa->haveTwoTMUs) {
      _mesa_enable_extension(ctx, "GL_EXT_texture_env_add");
      _mesa_enable_extension(ctx, "GL_ARB_multitexture");
   }

   if (fxMesa->haveHwStencil) {
      _mesa_enable_extension( ctx, "GL_EXT_stencil_wrap" );
   }

   /* [dBorca] Hack alert:
    * True texture compression can be done only on Napalm.
    * We will advertise, however, generic texture compression
    * on all Voodoo cards; the Mesa logic allows us to eventually
    * fallback to uncompressed. This will fix those dumb applications
    * which refuse to run w/o texture compression! We actually _can_
    * do texture compression for pre-Napalm cores, through NCC. But
    * NCC poses many issues:
    * 1) NCC w/o DITHER_ERR has poor quality and NCC w/ DITHER_ERR is
    *    damn slow!
    * 2) NCC compression cannot be used with multitexturing, because
    *    the decompression tables are not per TMU anymore (bear in mind
    *    that earlier Voodoos could handle 2 NCC tables for each TMU --
    *    just look for POINTCAST_PALETTE). As a last resort, we could
    *    fake NCC multitexturing through multipass rendering, but...
    *    ohwell, it's not worth the effort...
    *    This stand true for multitexturing palletized textures.
    * 3) since NCC is not an OpenGL standard (as opposed to FXT1), we
    *    would need to plug deeper into the core... First, we would need to
    *    bind NCC to GL_COMPRESSED_RGB[A]. Then, we would need to trick
    *    Mesa into reporting our texture as compressed. Last, we would need
    *    to stash the NCC decompression table into the mipmap data and adjust
    *    CompressedSize accordingly!
    */
   if (fxMesa->HaveTexus2) {
      _mesa_enable_extension(ctx, "GL_ARB_texture_compression");

      if (fxMesa->type >= GR_SSTTYPE_Voodoo4) {
         _mesa_enable_extension(ctx, "GL_3DFX_texture_compression_FXT1");
         _mesa_enable_extension(ctx, "GL_EXT_texture_compression_s3tc");
         _mesa_enable_extension(ctx, "GL_S3_s3tc");
      }
   }

   if (fxMesa->HaveCmbExt) {
      _mesa_enable_extension(ctx, "GL_EXT_texture_env_combine");
   }

   if (fxMesa->HavePixExt) {
      _mesa_enable_extension(ctx, "GL_EXT_blend_subtract");
   }

   if (fxMesa->HaveMirExt) {
      _mesa_enable_extension(ctx, "GL_ARB_texture_mirrored_repeat");
   }
}


/************************************************************************/
/************************************************************************/
/************************************************************************/

/* Check if the hardware supports the current context
 *
 * Performs similar work to fxDDChooseRenderState() - should be merged.
 */
GLuint
fx_check_IsInHardware(GLcontext * ctx)
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);

   if (ctx->RenderMode != GL_RENDER) {
      return FX_FALLBACK_RENDER_MODE;
   }

   if (ctx->Stencil.Enabled && !fxMesa->haveHwStencil) {
      return FX_FALLBACK_STENCIL;
   }

   if (ctx->Color._DrawDestMask != FRONT_LEFT_BIT && ctx->Color._DrawDestMask != BACK_LEFT_BIT) {
      return FX_FALLBACK_DRAW_BUFFER;
   }

   if (ctx->Color.BlendEnabled) {
      if (ctx->Color.BlendEquation != GL_FUNC_ADD_EXT) {
         if (!fxMesa->HavePixExt ||
             ((ctx->Color.BlendEquation != GL_FUNC_SUBTRACT_EXT) &&
              (ctx->Color.BlendEquation != GL_FUNC_REVERSE_SUBTRACT_EXT))) {
            return FX_FALLBACK_BLEND;
         }
      }
   }

   if (ctx->Color.ColorLogicOpEnabled && (ctx->Color.LogicOp != GL_COPY)) {
      return FX_FALLBACK_LOGICOP;
   }

#if 0 /* multipass ColorSum stage */
   if (ctx->Light.Model.ColorControl == GL_SEPARATE_SPECULAR_COLOR) {
      return FX_FALLBACK_SPECULAR;
   }
#endif

   if ((fxMesa->colDepth == 16) &&
       ((ctx->Color.ColorMask[RCOMP] != ctx->Color.ColorMask[GCOMP]) ||
        (ctx->Color.ColorMask[GCOMP] != ctx->Color.ColorMask[BCOMP]))) {
      return FX_FALLBACK_COLORMASK;
   }

   /* Unsupported texture/multitexture cases */

   if (fxMesa->haveTwoTMUs) {
      /* we can only do 2D textures */
      if (ctx->Texture.Unit[0]._ReallyEnabled & ~TEXTURE_2D_BIT)
	 return FX_FALLBACK_TEXTURE_1D_3D;
      if (ctx->Texture.Unit[1]._ReallyEnabled & ~TEXTURE_2D_BIT)
	 return FX_FALLBACK_TEXTURE_1D_3D;

      if (ctx->Texture.Unit[0]._ReallyEnabled & TEXTURE_2D_BIT) {
         if (fxMesa->type < GR_SSTTYPE_Voodoo2)
	 if (ctx->Texture.Unit[0].EnvMode == GL_BLEND &&
	     (ctx->Texture.Unit[1]._ReallyEnabled & TEXTURE_2D_BIT ||
	      ctx->Texture.Unit[0].EnvColor[0] != 0 ||
	      ctx->Texture.Unit[0].EnvColor[1] != 0 ||
	      ctx->Texture.Unit[0].EnvColor[2] != 0 ||
	      ctx->Texture.Unit[0].EnvColor[3] != 1)) {
	    return FX_FALLBACK_TEXTURE_ENV;
	 }
	 if (ctx->Texture.Unit[0]._Current->Image[0]->Border > 0)
	    return FX_FALLBACK_TEXTURE_BORDER;
      }

      if (ctx->Texture.Unit[1]._ReallyEnabled & TEXTURE_2D_BIT) {
         if (fxMesa->type < GR_SSTTYPE_Voodoo2)
	 if (ctx->Texture.Unit[1].EnvMode == GL_BLEND)
	    return FX_FALLBACK_TEXTURE_ENV;
	 if (ctx->Texture.Unit[1]._Current->Image[0]->Border > 0)
	    return FX_FALLBACK_TEXTURE_BORDER;
      }

      if (TDFX_DEBUG & (VERBOSE_DRIVER | VERBOSE_TEXTURE))
	 fprintf(stderr, "fx_check_IsInHardware: envmode is %s/%s\n",
		 _mesa_lookup_enum_by_nr(ctx->Texture.Unit[0].EnvMode),
		 _mesa_lookup_enum_by_nr(ctx->Texture.Unit[1].EnvMode));

      /* KW: This was wrong (I think) and I changed it... which doesn't mean
       * it is now correct...
       * BP: The old condition just seemed to test if both texture units
       * were enabled.  That's easy!
       */
      if (ctx->Texture._EnabledUnits == 0x3) {
	 /* Can't use multipass to blend a multitextured triangle - fall
	  * back to software.
	  */
	 if (!fxMesa->haveTwoTMUs && ctx->Color.BlendEnabled) {
	    return FX_FALLBACK_TEXTURE_MULTI;
	 }

	 if ((ctx->Texture.Unit[0].EnvMode != ctx->Texture.Unit[1].EnvMode) &&
	     (ctx->Texture.Unit[0].EnvMode != GL_MODULATE) &&
	     (ctx->Texture.Unit[0].EnvMode != GL_REPLACE)) {	/* q2, seems ok... */
	    if (TDFX_DEBUG & VERBOSE_DRIVER)
	       fprintf(stderr, "fx_check_IsInHardware: unsupported multitex env mode\n");
	    return FX_FALLBACK_TEXTURE_MULTI;
	 }
      }
   }
   else {
      /* we have just one texture unit */
      if (ctx->Texture._EnabledUnits > 0x1) {
	 return FX_FALLBACK_TEXTURE_MULTI;
      }

      if (fxMesa->type < GR_SSTTYPE_Voodoo2)
      if ((ctx->Texture.Unit[0]._ReallyEnabled & TEXTURE_2D_BIT) &&
	  (ctx->Texture.Unit[0].EnvMode == GL_BLEND)) {
	 return FX_FALLBACK_TEXTURE_ENV;
      }
   }

   return 0;
}



static void
fxDDUpdateDDPointers(GLcontext * ctx, GLuint new_state)
{
   /*   TNLcontext *tnl = TNL_CONTEXT(ctx);*/
   fxMesaContext fxMesa = FX_CONTEXT(ctx);

   if (TDFX_DEBUG & VERBOSE_DRIVER) {
      fprintf(stderr, "fxDDUpdateDDPointers(%08x)\n", new_state);
   }

   _swrast_InvalidateState(ctx, new_state);
   _ac_InvalidateState(ctx, new_state);
   _tnl_InvalidateState(ctx, new_state);
   _swsetup_InvalidateState(ctx, new_state);

   fxMesa->new_gl_state |= new_state;
}




void
fxSetupDDPointers(GLcontext * ctx)
{
   fxMesaContext fxMesa = FX_CONTEXT(ctx);
   TNLcontext *tnl = TNL_CONTEXT(ctx);

   if (TDFX_DEBUG & VERBOSE_DRIVER) {
      fprintf(stderr, "fxSetupDDPointers()\n");
   }

   ctx->Driver.UpdateState = fxDDUpdateDDPointers;
   ctx->Driver.GetString = fxDDGetString;
   ctx->Driver.ClearIndex = NULL;
   ctx->Driver.ClearColor = fxDDClearColor;
   ctx->Driver.Clear = fxDDClear;
   ctx->Driver.DrawBuffer = fxDDSetDrawBuffer;
   ctx->Driver.GetBufferSize = fxDDBufferSize;
   ctx->Driver.Accum = _swrast_Accum;
   ctx->Driver.CopyPixels = _swrast_CopyPixels;
   ctx->Driver.DrawPixels = _swrast_DrawPixels;
   switch (fxMesa->colDepth) {
          case 15:
               ctx->Driver.ReadPixels = fxDDReadPixels555;
               ctx->Driver.Bitmap = fxDDDrawBitmap2;
               break;
          case 16:
               ctx->Driver.ReadPixels = fxDDReadPixels565;
               ctx->Driver.Bitmap = fxDDDrawBitmap2;
               break;
          case 32:
               ctx->Driver.DrawPixels = fxDDDrawPixels8888;
               ctx->Driver.ReadPixels = fxDDReadPixels8888;
               ctx->Driver.Bitmap = fxDDDrawBitmap4;
               break;
   }
   ctx->Driver.ResizeBuffers = _swrast_alloc_buffers;
   ctx->Driver.Finish = fxDDFinish;
   ctx->Driver.Flush = NULL;
   ctx->Driver.ChooseTextureFormat = fxDDChooseTextureFormat;
   ctx->Driver.TexImage1D = _mesa_store_teximage1d;
   ctx->Driver.TexImage2D = fxDDTexImage2D;
   ctx->Driver.TexImage3D = _mesa_store_teximage3d;
   ctx->Driver.TexSubImage1D = _mesa_store_texsubimage1d;
   ctx->Driver.TexSubImage2D = fxDDTexSubImage2D;
   ctx->Driver.TexSubImage3D = _mesa_store_texsubimage3d;
   ctx->Driver.CompressedTexImage1D = _mesa_store_compressed_teximage1d;
   ctx->Driver.CompressedTexImage2D = fxDDCompressedTexImage2D;
   ctx->Driver.CompressedTexImage3D = _mesa_store_compressed_teximage3d;
   ctx->Driver.CompressedTexSubImage1D = _mesa_store_compressed_texsubimage1d;
   ctx->Driver.CompressedTexSubImage2D = fxDDCompressedTexSubImage2D;
   ctx->Driver.CompressedTexSubImage3D = _mesa_store_compressed_texsubimage3d;
   ctx->Driver.IsCompressedFormat = fxDDIsCompressedFormat;
   ctx->Driver.CompressedTextureSize = fxDDCompressedTextureSize;
   ctx->Driver.CopyTexImage1D = _swrast_copy_teximage1d;
   ctx->Driver.CopyTexImage2D = _swrast_copy_teximage2d;
   ctx->Driver.CopyTexSubImage1D = _swrast_copy_texsubimage1d;
   ctx->Driver.CopyTexSubImage2D = _swrast_copy_texsubimage2d;
   ctx->Driver.CopyTexSubImage3D = _swrast_copy_texsubimage3d;
   ctx->Driver.TestProxyTexImage = _mesa_test_proxy_teximage;
   ctx->Driver.CopyColorTable = _swrast_CopyColorTable;
   ctx->Driver.CopyColorSubTable = _swrast_CopyColorSubTable;
   ctx->Driver.CopyConvolutionFilter1D = _swrast_CopyConvolutionFilter1D;
   ctx->Driver.CopyConvolutionFilter2D = _swrast_CopyConvolutionFilter2D;
   ctx->Driver.TexEnv = fxDDTexEnv;
   ctx->Driver.TexParameter = fxDDTexParam;
   ctx->Driver.BindTexture = fxDDTexBind;
   ctx->Driver.DeleteTexture = fxDDTexDel;
   ctx->Driver.IsTextureResident = fxDDIsTextureResident;
   ctx->Driver.UpdateTexturePalette = fxDDTexPalette;
   ctx->Driver.AlphaFunc = fxDDAlphaFunc;
   ctx->Driver.BlendFunc = fxDDBlendFunc;
   ctx->Driver.BlendFuncSeparate = fxDDBlendFuncSeparate;
   ctx->Driver.BlendEquation = fxDDBlendEquation;
   ctx->Driver.DepthFunc = fxDDDepthFunc;
   ctx->Driver.DepthMask = fxDDDepthMask;
   ctx->Driver.ColorMask = fxDDColorMask;
   ctx->Driver.Fogfv = fxDDFogfv;
   ctx->Driver.Scissor = fxDDScissor;
   ctx->Driver.FrontFace = fxDDFrontFace;
   ctx->Driver.CullFace = fxDDCullFace;
   ctx->Driver.ShadeModel = fxDDShadeModel;
   ctx->Driver.Enable = fxDDEnable;
   if (fxMesa->haveHwStencil) {
      ctx->Driver.StencilFunc	= fxDDStencilFunc;
      ctx->Driver.StencilMask	= fxDDStencilMask;
      ctx->Driver.StencilOp	= fxDDStencilOp;
   }

   fxSetupDDSpanPointers(ctx);
   fxDDUpdateDDPointers(ctx, ~0);
}


#else


/*
 * Need this to provide at least one external definition.
 */

extern int gl_fx_dummy_function_dd(void);
int
gl_fx_dummy_function_dd(void)
{
   return 0;
}

#endif /* FX */
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