Initial revision

1 files changed, 632 insertions, 0 deletions

diff --git a/src/mesa/drivers/glide/fxdd.c b/src/mesa/drivers/glide/fxdd.c
new file mode 100644
index 0000000000..b2f3a7a43c
--- /dev/null
+++ b/src/mesa/drivers/glide/fxdd.c
@@ -0,0 +1,632 @@
+/* -*- mode: C; tab-width:8;  -*-
+
+             fxdd.c - 3Dfx VooDoo Mesa device driver functions
+*/
+
+/*
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * See the file fxapi.c for more informations about authors
+ *
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include "conf.h"
+#endif
+
+#if defined(FX)
+
+#include "fxdrv.h"
+#include "enums.h"
+
+/**********************************************************************/
+/*****                 Miscellaneous functions                    *****/
+/**********************************************************************/
+
+/* Enalbe/Disable dithering */
+void fxDDDither(GLcontext *ctx, GLboolean enable)
+{
+  if (MESA_VERBOSE&VERBOSE_DRIVER) {
+    fprintf(stderr,"fxmesa: fxDDDither()\n");
+  }
+
+  if(enable)
+    grDitherMode(GR_DITHER_4x4);
+  else
+    grDitherMode(GR_DITHER_DISABLE);
+}
+
+
+/* Return buffer size information */
+void fxDDBufferSize(GLcontext *ctx, GLuint *width, GLuint *height)
+{
+  fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
+
+  if (MESA_VERBOSE&VERBOSE_DRIVER) {
+    fprintf(stderr,"fxmesa: fxDDBufferSize(...) Start\n");
+  }
+
+  *width=fxMesa->width;
+  *height=fxMesa->height;
+
+  if (MESA_VERBOSE&VERBOSE_DRIVER) {
+    fprintf(stderr,"fxmesa: fxDDBufferSize(...) End\n");
+  }
+}
+
+
+/* Set current drawing color */
+static void fxDDSetColor(GLcontext *ctx, GLubyte red, GLubyte green,
+                         GLubyte blue, GLubyte alpha )
+{
+  fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
+  GLubyte col[4];
+  ASSIGN_4V( col, red, green, blue, alpha );
+  
+  if (MESA_VERBOSE&VERBOSE_DRIVER) {
+    fprintf(stderr,"fxmesa: fxDDSetColor(%d,%d,%d,%d)\n",red,green,blue,alpha);
+  }
+
+  fxMesa->color=FXCOLOR4(col);
+}
+
+
+/* Implements glClearColor() */
+static void fxDDClearColor(GLcontext *ctx, GLubyte red, GLubyte green,
+                           GLubyte blue, GLubyte alpha )
+{
+  fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
+  GLubyte col[4];
+
+
+
+  ASSIGN_4V( col, red, green, blue, 255 );
+
+  if (MESA_VERBOSE&VERBOSE_DRIVER) {
+    fprintf(stderr,"fxmesa: fxDDClearColor(%d,%d,%d,%d)\n",red,green,blue,alpha);
+  }
+ 
+  fxMesa->clearC=FXCOLOR4( col );
+  fxMesa->clearA=alpha;
+}
+
+/* Clear the color and/or depth buffers */
+static GLbitfield fxDDClear(GLcontext *ctx, GLbitfield mask, GLboolean all,
+                            GLint x, GLint y, GLint width, GLint height )
+{
+  fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
+  GLbitfield newmask;
+
+  if (MESA_VERBOSE&VERBOSE_DRIVER) {
+    fprintf(stderr,"fxmesa: fxDDClear(%d,%d,%d,%d)\n",x,y,width,height);
+  }
+
+  switch(mask & (GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT)) {
+  case (GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT):
+    /* clear color and depth buffer */
+
+    if (ctx->Color.DrawDestMask & BACK_LEFT_BIT) {
+      grRenderBuffer(GR_BUFFER_BACKBUFFER);
+      grBufferClear(fxMesa->clearC, fxMesa->clearA,
+                    (FxU16)(ctx->Depth.Clear*0xffff));
+    }
+    if (ctx->Color.DrawDestMask & FRONT_LEFT_BIT) {
+       grRenderBuffer(GR_BUFFER_FRONTBUFFER);
+       grBufferClear(fxMesa->clearC, fxMesa->clearA,
+                     (FxU16)(ctx->Depth.Clear*0xffff));
+    }
+
+    newmask=mask & (~(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT));
+    break;
+  case (GL_COLOR_BUFFER_BIT):
+    /* clear color buffer */
+
+    if(ctx->Color.ColorMask) {
+      grDepthMask(FXFALSE);
+
+      if (ctx->Color.DrawDestMask & BACK_LEFT_BIT) {
+        grRenderBuffer(GR_BUFFER_BACKBUFFER);
+        grBufferClear(fxMesa->clearC, fxMesa->clearA, 0);
+      }
+      if (ctx->Color.DrawDestMask & FRONT_LEFT_BIT) {
+        grRenderBuffer(GR_BUFFER_FRONTBUFFER);
+        grBufferClear(fxMesa->clearC, fxMesa->clearA, 0);
+      }
+
+      if(ctx->Depth.Mask)
+        grDepthMask(FXTRUE);
+    }
+
+    newmask=mask & (~(GL_COLOR_BUFFER_BIT));
+    break;
+  case (GL_DEPTH_BUFFER_BIT):
+    /* clear depth buffer */
+
+    if(ctx->Depth.Mask) {
+      grColorMask(FXFALSE,FXFALSE);
+      grBufferClear(fxMesa->clearC, fxMesa->clearA,
+                    (FxU16)(ctx->Depth.Clear*0xffff));
+
+      grColorMask(ctx->Color.ColorMask[RCOMP] ||
+                  ctx->Color.ColorMask[GCOMP] ||
+                  ctx->Color.ColorMask[BCOMP],
+                  ctx->Color.ColorMask[ACOMP] && fxMesa->haveAlphaBuffer);
+    }
+
+    newmask=mask & (~(GL_DEPTH_BUFFER_BIT));
+    break;
+  default:
+    newmask=mask;
+    break;
+  }
+   
+  return newmask;
+}
+
+
+/*  Set the buffer used in double buffering */
+static GLboolean fxDDSetBuffer(GLcontext *ctx, GLenum mode )
+{
+  fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
+
+  if (MESA_VERBOSE&VERBOSE_DRIVER) {
+    fprintf(stderr,"fxmesa: fxDDSetBuffer(%x)\n",mode);
+  }
+
+  if (mode == GL_FRONT_LEFT) {
+    fxMesa->currentFB = GR_BUFFER_FRONTBUFFER;
+    grRenderBuffer(fxMesa->currentFB);
+    return GL_TRUE;
+  }
+  else if (mode == GL_BACK_LEFT) {
+    fxMesa->currentFB = GR_BUFFER_BACKBUFFER;
+    grRenderBuffer(fxMesa->currentFB);
+    return GL_TRUE;
+  }
+  else {
+    return GL_FALSE;
+  }
+}
+
+
+static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
+                                GLsizei width, GLsizei height,
+                                const struct gl_pixelstore_attrib *unpack,
+                                const GLubyte *bitmap)
+{
+  fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
+  FxU16 *p;
+  GrLfbInfo_t info;
+  const GLubyte *pb;
+  int x,y;
+  GLint r,g,b,a,scrwidth,scrheight,stride;
+  FxU16 color;
+
+  /* TODO: with a little work, these bitmap unpacking parameter restrictions
+   * could be removed.
+   */
+  if((unpack->Alignment!=1) ||
+     (unpack->RowLength!=0) ||
+     (unpack->SkipPixels!=0) ||
+     (unpack->SkipRows!=0) ||
+     (unpack->SwapBytes) ||
+     (unpack->LsbFirst))
+    return GL_FALSE;
+
+#define ISCLIPPED(rx) ( ((rx)<0) || ((rx)>=scrwidth) )
+#define DRAWBIT(i) {	   \
+  if(!ISCLIPPED(x+px))	   \
+    if( (*pb) & (1<<(i)) ) \
+      (*p)=color;	   \
+  p++;                     \
+  x++;			   \
+  if(x>=width) {           \
+    pb++;                  \
+    break;                 \
+  }                        \
+}
+
+  scrwidth=fxMesa->width;
+  scrheight=fxMesa->height;
+
+  if((px>=scrwidth) || (px+width<=0) || (py>=scrheight) || (py+height<=0))
+    return GL_TRUE;
+
+  pb=bitmap;
+
+  if(py<0) {
+    pb+=(height*(-py)) >> (3+1);
+    height+=py;
+    py=0;
+  }
+
+  if(py+height>=scrheight)
+    height-=(py+height)-scrheight;
+
+  info.size=sizeof(info);
+  if(!grLfbLock(GR_LFB_WRITE_ONLY,
+                fxMesa->currentFB,
+                GR_LFBWRITEMODE_565,
+                GR_ORIGIN_UPPER_LEFT,
+                FXFALSE,
+                &info)) {
+#ifndef FX_SILENT
+    fprintf(stderr,"fx Driver: error locking the linear frame buffer\n");
+#endif
+    return GL_TRUE;
+  }
+
+  r=(GLint)(ctx->Current.RasterColor[0]*255.0f);
+  g=(GLint)(ctx->Current.RasterColor[1]*255.0f);
+  b=(GLint)(ctx->Current.RasterColor[2]*255.0f);
+  a=(GLint)(ctx->Current.RasterColor[3]*255.0f);
+  color=(FxU16)
+    ( ((FxU16)0xf8 & b) <<(11-3))  |
+    ( ((FxU16)0xfc & g) <<(5-3+1)) |
+    ( ((FxU16)0xf8 & r) >> 3);
+
+  stride=info.strideInBytes>>1;
+
+  /* This code is a bit slow... */
+
+  for(y=0;y<height;y++) {
+    p=((FxU16 *)info.lfbPtr)+px+((scrheight-(y+py))*stride);
+
+    for(x=0;;) {
+      DRAWBIT(7);       DRAWBIT(6);     DRAWBIT(5);     DRAWBIT(4);
+      DRAWBIT(3);       DRAWBIT(2);     DRAWBIT(1);     DRAWBIT(0);
+      pb++;
+    }
+  }
+
+  grLfbUnlock(GR_LFB_WRITE_ONLY,fxMesa->currentFB);
+
+#undef ISCLIPPED
+#undef DRAWBIT
+
+  return GL_TRUE;
+}
+
+static void fxDDFinish(GLcontext *ctx)
+{
+  FX_grFlush();
+}
+
+
+static GLint fxDDGetParameteri(const GLcontext *ctx, GLint param)
+{
+  switch(param) {
+  case DD_HAVE_HARDWARE_FOG:
+    return 1;
+  default:
+    fprintf(stderr,"fx Driver: internal error in fxDDGetParameteri(): %x\n",param);
+    fxCloseHardware();
+    exit(-1);
+  }
+}
+
+
+void fxDDSetNearFar(GLcontext *ctx, GLfloat n, GLfloat f)
+{
+   FX_CONTEXT(ctx)->new_state |= FX_NEW_FOG;
+   ctx->Driver.RenderStart = fxSetupFXUnits;
+}
+
+/* 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)
+{
+  static char *extensions="GL_EXT_blend_color GL_EXT_blend_minmax GL_EXT_blend_logic_op GL_EXT_blend_subtract GL_EXT_paletted_texture GL_EXT_point_parameters GL_EXT_polygon_offset GL_EXT_vertex_array GL_EXT_texture_object GL_EXT_texture3D GL_MESA_window_pos GL_MESA_resize_buffers GL_EXT_shared_texture_palette GL_EXT_rescale_normal GL_EXT_abgr GL_SGIS_texture_edge_clamp 3DFX_set_global_palette GL_FXMESA_global_texture_lod_bias";
+
+  static char buf[MAX_NUM_SST][64];
+
+  fxQueryHardware();
+
+  switch (name) {
+    case GL_RENDERER:
+      if(glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_VOODOO) {
+        sprintf(buf[glbCurrentBoard],"Mesa Glide v0.30 Voodoo_Graphics %d CARD/%d FB/%d TM/%d TMU/%s",
+                glbCurrentBoard,
+
+                (glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.sliDetect ?
+                 (glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.fbRam*2) :
+                 glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.fbRam),
+
+                glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.tmuConfig[GR_TMU0].tmuRam+
+                ((glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.nTexelfx>1) ?
+                 glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.tmuConfig[GR_TMU1].tmuRam :
+                 0),
+
+                glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.nTexelfx,
+
+                (glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig.sliDetect ? "SLI" : "NOSLI")
+                );
+      }
+      else {
+        if(glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_SST96)
+          sprintf(buf[glbCurrentBoard],"Glide v0.30 Voodoo_Rush %d CARD/%d FB/%d TM/%d TMU/NOSLI",
+                  glbCurrentBoard,
+
+                  glbHWConfig.SSTs[glbCurrentBoard].sstBoard.SST96Config.fbRam,
+
+                  glbHWConfig.SSTs[glbCurrentBoard].sstBoard.SST96Config.tmuConfig.tmuRam,
+
+                  glbHWConfig.SSTs[glbCurrentBoard].sstBoard.SST96Config.nTexelfx	      
+                  );
+        else
+          strcpy(buf[glbCurrentBoard],"Glide v0.30 UNKNOWN");
+      }
+      return (GLubyte *) buf[glbCurrentBoard];
+    case GL_EXTENSIONS:
+      return (GLubyte *) extensions;
+    default:
+      return NULL;
+  }
+}
+
+
+void fxDDInitExtensions( GLcontext *ctx )
+{
+   fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
+
+   gl_extensions_add( ctx, DEFAULT_ON, "3DFX_set_global_palette", 0 );
+   gl_extensions_add( ctx, DEFAULT_ON, "GL_FXMESA_global_texture_lod_bias", 0);
+   
+   if (!fxMesa->emulateTwoTMUs) 
+      gl_extensions_disable( ctx, "GL_ARB_multitexture" );
+}
+
+/************************************************************************/
+/************************************************************************/
+/************************************************************************/
+
+/* This is a no-op, since the z-buffer is in hardware */
+static void fxAllocDepthBuffer(GLcontext *ctx)
+{
+   if (MESA_VERBOSE&VERBOSE_DRIVER) {
+     fprintf(stderr,"fxmesa: fxAllocDepthBuffer()\n");
+   }
+}
+
+/************************************************************************/
+/************************************************************************/
+/************************************************************************/
+
+/* Check if the hardware supports the current context 
+ *
+ * Performs similar work to fxDDChooseRenderState() - should be merged.
+ */
+static GLboolean fxIsInHardware(GLcontext *ctx)
+{
+   fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
+
+  if (!ctx->Hint.AllowDrawMem)
+     return GL_TRUE;		/* you'll take it and like it */
+
+  if((ctx->RasterMask & STENCIL_BIT) ||
+     ((ctx->Color.BlendEnabled) && (ctx->Color.BlendEquation!=GL_FUNC_ADD_EXT)) ||
+     ((ctx->Color.ColorLogicOpEnabled) && (ctx->Color.LogicOp!=GL_COPY)) ||
+     (ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR) ||
+     (!((ctx->Color.ColorMask[RCOMP]==ctx->Color.ColorMask[GCOMP]) &&
+        (ctx->Color.ColorMask[GCOMP]==ctx->Color.ColorMask[BCOMP]) &&
+        (ctx->Color.ColorMask[ACOMP]==ctx->Color.ColorMask[ACOMP])))
+     )
+    return GL_FALSE;
+
+  /* Unsupported texture/multitexture cases */
+
+  if(fxMesa->emulateTwoTMUs) {
+    if((ctx->Enabled & (TEXTURE0_3D | TEXTURE1_3D)) ||
+       /* Not very well written ... */
+       ((ctx->Enabled & (TEXTURE0_1D | TEXTURE1_1D)) && 
+        ((ctx->Enabled & (TEXTURE0_2D | TEXTURE1_2D))!=(TEXTURE0_2D | TEXTURE1_2D)))
+       )
+      return GL_FALSE;
+
+    if((ctx->Texture.ReallyEnabled & TEXTURE0_2D) &&
+       (ctx->Texture.Unit[0].EnvMode==GL_BLEND))
+      return GL_FALSE;
+
+    if((ctx->Texture.ReallyEnabled & TEXTURE1_2D) &&
+       (ctx->Texture.Unit[1].EnvMode==GL_BLEND))
+      return GL_FALSE;
+
+
+    if (MESA_VERBOSE & (VERBOSE_DRIVER|VERBOSE_TEXTURE))
+       fprintf(stderr, "fxMesa: fxIsInHardware, envmode is %s/%s\n",
+	       gl_lookup_enum_by_nr(ctx->Texture.Unit[0].EnvMode),
+	       gl_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...
+     */
+    if((ctx->Enabled & (TEXTURE0_1D | TEXTURE0_2D | TEXTURE0_3D)) &&
+       (ctx->Enabled & (TEXTURE1_1D | TEXTURE1_2D | TEXTURE1_3D)))
+    {
+       /* Can't use multipass to blend a multitextured triangle - fall
+	* back to software.
+	*/
+       if (!fxMesa->haveTwoTMUs && ctx->Color.BlendEnabled) 
+	  return GL_FALSE;
+	  
+       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 (MESA_VERBOSE&VERBOSE_DRIVER)
+	    fprintf(stderr, "fxMesa: unsupported multitex env mode\n");
+
+	  return GL_FALSE;
+       }
+    }
+  } else {
+    if((ctx->Enabled & (TEXTURE1_1D | TEXTURE1_2D | TEXTURE1_3D)) ||
+       /* Not very well written ... */
+       ((ctx->Enabled & TEXTURE0_1D) && 
+        (!(ctx->Enabled & TEXTURE0_2D)))
+       )
+      return GL_FALSE;
+
+    
+    if((ctx->Texture.ReallyEnabled & TEXTURE0_2D) &&
+       (ctx->Texture.Unit[0].EnvMode==GL_BLEND))
+      return GL_FALSE;
+  }
+
+  return GL_TRUE;
+}
+
+
+
+#define INTERESTED (~(NEW_MODELVIEW|NEW_PROJECTION|NEW_PROJECTION|NEW_TEXTURE_MATRIX|NEW_USER_CLIP|NEW_CLIENT_STATE|NEW_TEXTURE_ENABLE))
+
+static void fxDDUpdateDDPointers(GLcontext *ctx)
+{
+  fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
+  GLuint new_state = ctx->NewState;
+
+  if (MESA_VERBOSE&(VERBOSE_DRIVER|VERBOSE_STATE)) 
+    fprintf(stderr,"fxmesa: fxDDUpdateDDPointers(...)\n");
+
+  if (new_state & (NEW_RASTER_OPS|NEW_TEXTURING))
+     fxMesa->is_in_hardware = fxIsInHardware(ctx);
+
+  if (fxMesa->is_in_hardware) {
+    if (fxMesa->new_state)
+      fxSetupFXUnits(ctx);
+
+    if(new_state & INTERESTED) {
+      fxDDChooseRenderState( ctx );
+      fxMesa->RenderVBTables=fxDDChooseRenderVBTables(ctx);
+      ctx->Driver.RasterSetup=fxDDChooseSetupFunction(ctx);
+    }
+      
+    ctx->Driver.PointsFunc=fxMesa->PointsFunc;
+    ctx->Driver.LineFunc=fxMesa->LineFunc;
+    ctx->Driver.TriangleFunc=fxMesa->TriangleFunc;
+    ctx->Driver.QuadFunc=fxMesa->QuadFunc;
+    ctx->Driver.RenderVBClippedTab=fxMesa->RenderVBTables[0];
+    ctx->Driver.RenderVBCulledTab=fxMesa->RenderVBTables[1];
+    ctx->Driver.RenderVBRawTab=fxMesa->RenderVBTables[2];
+
+  }
+
+  ctx->Driver.AllocDepthBuffer=fxAllocDepthBuffer;
+  ctx->Driver.DepthTestSpan=fxDDDepthTestSpanGeneric;
+  ctx->Driver.DepthTestPixels=fxDDDepthTestPixelsGeneric;
+  ctx->Driver.ReadDepthSpanFloat=fxDDReadDepthSpanFloat;
+  ctx->Driver.ReadDepthSpanInt=fxDDReadDepthSpanInt;
+  ctx->Driver.RenderStart = 0;
+}
+
+
+void fxSetupDDPointers(GLcontext *ctx)
+{
+  if (MESA_VERBOSE&VERBOSE_DRIVER) {
+    fprintf(stderr,"fxmesa: fxSetupDDPointers()\n");
+  }
+
+  ctx->Driver.UpdateState=fxDDUpdateDDPointers;
+         
+  ctx->Driver.GetString=fxDDGetString;
+
+  ctx->Driver.Dither=fxDDDither;
+
+  ctx->Driver.NearFar=fxDDSetNearFar;
+
+  ctx->Driver.GetParameteri=fxDDGetParameteri;
+
+  ctx->Driver.ClearIndex=NULL;
+  ctx->Driver.ClearColor=fxDDClearColor;
+  ctx->Driver.Clear=fxDDClear;
+
+  ctx->Driver.Index=NULL;
+  ctx->Driver.Color=fxDDSetColor;
+
+  ctx->Driver.SetBuffer=fxDDSetBuffer;
+  ctx->Driver.GetBufferSize=fxDDBufferSize;
+
+  ctx->Driver.Bitmap=fxDDDrawBitMap;
+  ctx->Driver.DrawPixels=NULL;
+
+  ctx->Driver.Finish=fxDDFinish;
+  ctx->Driver.Flush=NULL;
+
+  ctx->Driver.RenderStart=NULL;
+  ctx->Driver.RenderFinish=NULL;
+
+  ctx->Driver.TexEnv=fxDDTexEnv;
+  ctx->Driver.TexImage=fxDDTexImg;
+  ctx->Driver.TexSubImage=fxDDTexSubImg;
+  ctx->Driver.TexParameter=fxDDTexParam;
+  ctx->Driver.BindTexture=fxDDTexBind;
+  ctx->Driver.DeleteTexture=fxDDTexDel;
+  ctx->Driver.UpdateTexturePalette=fxDDTexPalette;
+  ctx->Driver.UseGlobalTexturePalette=fxDDTexUseGlbPalette;
+
+  ctx->Driver.RectFunc=NULL;
+
+  ctx->Driver.AlphaFunc=fxDDAlphaFunc;
+  ctx->Driver.BlendFunc=fxDDBlendFunc;
+  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;
+  
+
+  ctx->Driver.RegisterVB=fxDDRegisterVB;
+  ctx->Driver.UnregisterVB=fxDDUnregisterVB;
+
+  ctx->Driver.RegisterPipelineStages = fxDDRegisterPipelineStages;
+
+  ctx->Driver.OptimizeImmediatePipeline = 0; /* nothing done yet */
+  ctx->Driver.OptimizePrecalcPipeline = 0;
+
+/*    if (getenv("MESA_USE_FAST") || getenv("FX_USE_FAST")) */
+/*       ctx->Driver.OptimizePrecalcPipeline = fxDDOptimizePrecalcPipeline; */
+
+  if (!getenv("FX_NO_FAST")) 
+      ctx->Driver.BuildPrecalcPipeline = fxDDBuildPrecalcPipeline; 
+
+  ctx->Driver.TriangleCaps = DD_TRI_CULL|DD_TRI_OFFSET|DD_TRI_LIGHT_TWOSIDE;
+
+  fxSetupDDSpanPointers(ctx);
+
+  FX_CONTEXT(ctx)->render_index = 1; /* force an update */
+  fxDDUpdateDDPointers(ctx);
+}
+
+
+#else
+
+
+/*
+ * Need this to provide at least one external definition.
+ */
+
+int gl_fx_dummy_function_dd(void)
+{
+  return 0;
+}
+
+#endif  /* FX */