Overhaul the Xlib winsys layer.

Front/back color buffers are now allocated with ordinary malloc() via the
winsys buffer functions.
To display surfaces in SwapBuffers() or flush_frontbuffer() we create an
XImage that wraps the surface, then use XPutImage to copy to the window.
Shared memory transport disabled for now.

6 files changed, 256 insertions, 2360 deletions

diff --git a/src/mesa/pipe/xlib/fakeglx.c b/src/mesa/pipe/xlib/fakeglx.c
index d7e7b292d1f..6965ee0794c 100644
--- a/src/mesa/pipe/xlib/fakeglx.c
+++ b/src/mesa/pipe/xlib/fakeglx.c
@@ -1433,7 +1433,6 @@ Fake_glXCreateContext( Display *dpy, XVisualInfo *visinfo,
       return NULL;
    }
 
-   glxCtx->xmesaContext->direct = GL_FALSE;
    glxCtx->glxContext.isDirect = GL_FALSE;
    glxCtx->glxContext.currentDpy = dpy;
    glxCtx->glxContext.xid = (XID) glxCtx;  /* self pointer */
@@ -1565,7 +1564,7 @@ Fake_glXCreateGLXPixmap( Display *dpy, XVisualInfo *visinfo, Pixmap pixmap )
    if (!b) {
       return 0;
    }
-   return b->frontxrb->pixmap;
+   return b->drawable;
 }
 
 
@@ -1591,7 +1590,7 @@ Fake_glXCreateGLXPixmapMESA( Display *dpy, XVisualInfo *visinfo,
    if (!b) {
       return 0;
    }
-   return b->frontxrb->pixmap;
+   return b->drawable;
 }
 
 
@@ -1662,9 +1661,9 @@ Fake_glXDestroyContext( Display *dpy, GLXContext ctx )
 static Bool
 Fake_glXIsDirect( Display *dpy, GLXContext ctx )
 {
-   struct fake_glx_context *glxCtx = (struct fake_glx_context *) ctx;
    (void) dpy;
-   return glxCtx->xmesaContext->direct;
+   (void) ctx;
+   return False;
 }
 
 
@@ -2360,7 +2359,7 @@ Fake_glXCreatePbuffer( Display *dpy, GLXFBConfig config,
     * glXMakeCurrent takes.
     */
    if (xmbuf)
-      return (GLXPbuffer) xmbuf->frontxrb->pixmap;
+      return (GLXPbuffer) xmbuf->drawable;
    else
       return 0;
 }
@@ -2444,7 +2443,6 @@ Fake_glXCreateNewContext( Display *dpy, GLXFBConfig config,
       return NULL;
    }
 
-   glxCtx->xmesaContext->direct = GL_FALSE;
    glxCtx->glxContext.isDirect = GL_FALSE;
    glxCtx->glxContext.currentDpy = dpy;
    glxCtx->glxContext.xid = (XID) glxCtx;  /* self pointer */
@@ -2642,7 +2640,7 @@ Fake_glXCreateGLXPixmapWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, Pixm
 {
    XMesaVisual xmvis = (XMesaVisual) config;
    XMesaBuffer xmbuf = XMesaCreatePixmapBuffer(xmvis, pixmap, 0);
-   return xmbuf->frontxrb->pixmap; /* need to return an X ID */
+   return xmbuf->drawable; /* need to return an X ID */
 }
 
 
@@ -2667,7 +2665,6 @@ Fake_glXCreateContextWithConfigSGIX(Display *dpy, GLXFBConfigSGIX config, int re
       return NULL;
    }
 
-   glxCtx->xmesaContext->direct = GL_FALSE;
    glxCtx->glxContext.isDirect = GL_FALSE;
    glxCtx->glxContext.currentDpy = dpy;
    glxCtx->glxContext.xid = (XID) glxCtx;  /* self pointer */
@@ -2736,7 +2733,7 @@ Fake_glXCreateGLXPbufferSGIX(Display *dpy, GLXFBConfigSGIX config,
    /* A GLXPbuffer handle must be an X Drawable because that's what
     * glXMakeCurrent takes.
     */
-   return (GLXPbuffer) xmbuf->frontxrb->pixmap;
+   return (GLXPbuffer) xmbuf->drawable;
 }
 
 
diff --git a/src/mesa/pipe/xlib/xm_api.c b/src/mesa/pipe/xlib/xm_api.c
index 542b4aca49c..ce7e3cb6c2d 100644
--- a/src/mesa/pipe/xlib/xm_api.c
+++ b/src/mesa/pipe/xlib/xm_api.c
@@ -48,12 +48,7 @@
  * according to the display's visual red_mask, green_mask, and blue_mask.
  * If XPutPixel is used to put a pixel into an XImage then XPutPixel will
  * do byte swapping if needed.  If one wants to directly "poke" the pixel
- * into the XImage's buffer then the pixel must be byte swapped first.  In
- * Mesa, when byte swapping is needed we use the PF_TRUECOLOR pixel format
- * and use XPutPixel everywhere except in the implementation of
- * glClear(GL_COLOR_BUFFER_BIT).  We want this function to be fast so
- * instead of using XPutPixel we "poke" our values after byte-swapping
- * the clear pixel value if needed.
+ * into the XImage's buffer then the pixel must be byte swapped first.
  *
  */
 
@@ -77,8 +72,8 @@
 
 #include "state_tracker/st_public.h"
 #include "state_tracker/st_context.h"
-#include "pipe/softpipe/sp_context.h"
 #include "pipe/p_defines.h"
+#include "pipe/p_context.h"
 
 /**
  * Global X driver lock
@@ -136,24 +131,6 @@ static int check_for_xshm( XMesaDisplay *display )
 
 
 /**
- * Apply gamma correction to an intensity value in [0..max].  Return the
- * new intensity value.
- */
-static GLint
-gamma_adjust( GLfloat gamma, GLint value, GLint max )
-{
-   if (gamma == 1.0) {
-      return value;
-   }
-   else {
-      double x = (double) value / (double) max;
-      return IROUND_POS((GLfloat) max * _mesa_pow(x, 1.0F/gamma));
-   }
-}
-
-
-
-/**
  * Return the true number of bits per pixel for XImages.
  * For example, if we request a 24-bit deep visual we may actually need/get
  * 32bpp XImages.  This function returns the appropriate bpp.
@@ -252,19 +229,19 @@ get_drawable_size( XMesaDisplay *dpy, Drawable d, GLuint *width, GLuint *height
  * \param width  returns width in pixels
  * \param height  returns height in pixels
  */
-void
+static void
 xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b,
                       GLuint *width, GLuint *height)
 {
 #ifdef XFree86Server
-   *width = MIN2(b->frontxrb->drawable->width, MAX_WIDTH);
-   *height = MIN2(b->frontxrb->drawable->height, MAX_HEIGHT);
+   *width = MIN2(b->drawable->width, MAX_WIDTH);
+   *height = MIN2(b->drawable->height, MAX_HEIGHT);
 #else
    Status stat;
 
    _glthread_LOCK_MUTEX(_xmesa_lock);
    XSync(b->xm_visual->display, 0); /* added for Chromium */
-   stat = get_drawable_size(dpy, b->frontxrb->pixmap, width, height);
+   stat = get_drawable_size(dpy, b->drawable, width, height);
    _glthread_UNLOCK_MUTEX(_xmesa_lock);
 
    if (!stat) {
@@ -301,7 +278,6 @@ create_xmesa_buffer(XMesaDrawable d, BufferType type,
 {
    XMesaBuffer b;
    GLframebuffer *fb;
-   struct pipe_winsys *winsys = xmesa_get_pipe_winsys();
 
    ASSERT(type == WINDOW || type == PIXMAP || type == PBUFFER);
 
@@ -309,7 +285,8 @@ create_xmesa_buffer(XMesaDrawable d, BufferType type,
    if (!b)
       return NULL;
 
-   b->display = vis->display;
+   b->drawable = d;
+
    b->xm_visual = vis;
    b->type = type;
    b->cmap = cmap;
@@ -317,113 +294,20 @@ create_xmesa_buffer(XMesaDrawable d, BufferType type,
    /*
     * Create framebuffer, but we'll plug in our own renderbuffers below.
     */
-   b->stfb = st_create_framebuffer(&vis->mesa_visual, GL_FALSE, (void *) b);
+   b->stfb = st_create_framebuffer(&vis->mesa_visual, GL_TRUE, (void *) b);
    fb = &b->stfb->Base;
 
-   fb->Delete = xmesa_delete_framebuffer;
-
-   /*
-    * XXX we want to create surfaces for pipe, not renderbuffers for Mesa.
-    */
-
-   /*
-    * Front renderbuffer
-    */
-   b->frontxrb = xmesa_create_renderbuffer(winsys, 0, vis, GL_FALSE);
-   if (!b->frontxrb) {
-      _mesa_free(b);
-      return NULL;
-   }
-   b->frontxrb->Parent = b;
-   b->frontxrb->drawable = d;
-   b->frontxrb->pixmap = (XMesaPixmap) d;
-   _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &b->frontxrb->St.Base);
-
-   /*
-    * Back renderbuffer
-    */
-   if (vis->mesa_visual.doubleBufferMode) {
-      b->backxrb = xmesa_create_renderbuffer(winsys, 0, vis, GL_TRUE);
-      if (!b->backxrb) {
-         /* XXX free front xrb too */
-         _mesa_free(b);
-         return NULL;
-      }
-      b->backxrb->Parent = b;
-      /* determine back buffer implementation */
-      b->db_mode = vis->ximage_flag ? BACK_XIMAGE : BACK_PIXMAP;
-      
-      _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &b->backxrb->St.Base);
-   }
-
-   /*
-    * Software alpha planes
-    */
-   if (vis->mesa_visual.alphaBits > 0
-       && vis->undithered_pf != PF_8A8B8G8R
-       && vis->undithered_pf != PF_8A8R8G8B) {
-      /* Visual has alpha, but pixel format doesn't support it.
-       * We'll use an alpha renderbuffer wrapper.
-       */
-#if 0
-      b->swAlpha = GL_TRUE; /* don't do any renderbuffer wrapping */
-#else
-      b->swAlpha = GL_FALSE;
-#endif
-   }
-   else {
-      b->swAlpha = GL_FALSE;
-   }
-
-   if (vis->mesa_visual.depthBits > 0 &&
-       vis->mesa_visual.stencilBits > 0) {
-      /* combined depth/stencil */
-      struct gl_renderbuffer *rb
-         = st_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT);
-      _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
-      _mesa_add_renderbuffer(fb, BUFFER_STENCIL, rb);
-   }
-   else {
-      if (vis->mesa_visual.depthBits > 24) {
-         struct gl_renderbuffer *rb
-         = st_new_renderbuffer_fb(GL_DEPTH_COMPONENT32);
-         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
-      }
-      else if (vis->mesa_visual.depthBits > 16) {
-         struct gl_renderbuffer *rb
-         = st_new_renderbuffer_fb(GL_DEPTH24_STENCIL8_EXT);
-         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
-      }
-      else if (vis->mesa_visual.depthBits > 1) {
-         struct gl_renderbuffer *rb
-         = st_new_renderbuffer_fb(GL_DEPTH_COMPONENT16);
-         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, rb);
-      }
-
-      if (vis->mesa_visual.stencilBits > 0) {
-         struct gl_renderbuffer *rb
-            = st_new_renderbuffer_fb(GL_STENCIL_INDEX8_EXT);
-         _mesa_add_renderbuffer(fb, BUFFER_STENCIL, rb);
-      }
-   }
-
-   if (vis->mesa_visual.accumRedBits > 0) {
-      struct gl_renderbuffer *rb
-         = st_new_renderbuffer_fb(GL_RGBA16);
-      _mesa_add_renderbuffer(fb, BUFFER_ACCUM, rb);
-   }
-
-
    /*
-    * Other renderbuffer (depth, stencil, etc)
+    * Create scratch XImage for xmesa_display_surface()
     */
-   _mesa_add_soft_renderbuffers(fb,
-                                GL_FALSE, /* color */
-                                GL_FALSE, /*vis->mesa_visual.haveDepthBuffer,*/
-                                GL_FALSE, /* stencil */
-                                GL_FALSE, /* accum */
-                                b->swAlpha,
-                                vis->mesa_visual.numAuxBuffers > 0 );
+   b->tempImage = XCreateImage(vis->display,
+                               vis->visinfo->visual,
+                               vis->visinfo->depth,
+                               ZPixmap, 0,   /* format, offset */
+                               NULL,         /* data */
+                               0, 0,         /* size */
+                               32,           /* bitmap_pad */
+                               0);           /* bytes_per_line */
 
    /* GLX_EXT_texture_from_pixmap */
    b->TextureTarget = 0;
@@ -446,8 +330,10 @@ XMesaBuffer
 xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis)
 {
    XMesaBuffer b;
-   for (b=XMesaBufferList; b; b=b->Next) {
-      if (b->display==dpy && b->cmap==cmap && b!=notThis) {
+   for (b = XMesaBufferList; b; b = b->Next) {
+      if (b->xm_visual->display == dpy &&
+          b->cmap == cmap &&
+          b != notThis) {
          return b;
       }
    }
@@ -479,7 +365,10 @@ xmesa_free_buffer(XMesaBuffer buffer)
          /* Since the X window for the XMesaBuffer is going away, we don't
           * want to dereference this pointer in the future.
           */
-         b->frontxrb->drawable = 0;
+         b->drawable = 0;
+
+         buffer->tempImage->data = NULL;
+         XDestroyImage(buffer->tempImage);
 
          /* Unreference.  If count = zero we'll really delete the buffer */
          _mesa_unreference_framebuffer(&fb);
@@ -494,22 +383,6 @@ xmesa_free_buffer(XMesaBuffer buffer)
 }
 
 
-/**
- * Copy X color table stuff from one XMesaBuffer to another.
- */
-static void
-copy_colortable_info(XMesaBuffer dst, const XMesaBuffer src)
-{
-   MEMCPY(dst->color_table, src->color_table, sizeof(src->color_table));
-   MEMCPY(dst->pixel_to_r, src->pixel_to_r, sizeof(src->pixel_to_r));
-   MEMCPY(dst->pixel_to_g, src->pixel_to_g, sizeof(src->pixel_to_g));
-   MEMCPY(dst->pixel_to_b, src->pixel_to_b, sizeof(src->pixel_to_b));
-   dst->num_alloced = src->num_alloced;
-   MEMCPY(dst->alloced_colors, src->alloced_colors,
-          sizeof(src->alloced_colors));
-}
-
-
 
 /**********************************************************************/
 /*****                   Misc Private Functions                   *****/
@@ -517,450 +390,49 @@ copy_colortable_info(XMesaBuffer dst, const XMesaBuffer src)
 
 
 /**
- * A replacement for XAllocColor.  This function should never
- * fail to allocate a color.  When XAllocColor fails, we return
- * the nearest matching color.  If we have to allocate many colors
- * this function isn't too efficient; the XQueryColors() could be
- * done just once.
- * Written by Michael Pichler, Brian Paul, Mark Kilgard
- * Input:  dpy - X display
- *         cmap - X colormap
- *         cmapSize - size of colormap
- * In/Out: color - the XColor struct
- * Output:  exact - 1=exact color match, 0=closest match
- *          alloced - 1=XAlloc worked, 0=XAlloc failed
- */
-static void
-noFaultXAllocColor( int client,
-                    XMesaDisplay *dpy,
-                    XMesaColormap cmap,
-                    int cmapSize,
-                    XMesaColor *color,
-                    int *exact, int *alloced )
-{
-#ifdef XFree86Server
-   Pixel *ppixIn;
-   xrgb *ctable;
-#else
-   /* we'll try to cache ctable for better remote display performance */
-   static Display *prevDisplay = NULL;
-   static XMesaColormap prevCmap = 0;
-   static int prevCmapSize = 0;
-   static XMesaColor *ctable = NULL;
-#endif
-   XMesaColor subColor;
-   int i, bestmatch;
-   double mindist;       /* 3*2^16^2 exceeds long int precision. */
-
-   (void) client;
-
-   /* First try just using XAllocColor. */
-#ifdef XFree86Server
-   if (AllocColor(cmap,
-		  &color->red, &color->green, &color->blue,
-		  &color->pixel,
-		  client) == Success)
-#else
-   if (XAllocColor(dpy, cmap, color))
-#endif
-   {
-      *exact = 1;
-      *alloced = 1;
-      return;
-   }
-
-   /* Alloc failed, search for closest match */
-
-   /* Retrieve color table entries. */
-   /* XXX alloca candidate. */
-#ifdef XFree86Server
-   ppixIn = (Pixel *) MALLOC(cmapSize * sizeof(Pixel));
-   ctable = (xrgb *) MALLOC(cmapSize * sizeof(xrgb));
-   for (i = 0; i < cmapSize; i++) {
-      ppixIn[i] = i;
-   }
-   QueryColors(cmap, cmapSize, ppixIn, ctable);
-#else
-   if (prevDisplay != dpy || prevCmap != cmap
-       || prevCmapSize != cmapSize || !ctable) {
-      /* free previously cached color table */
-      if (ctable)
-         _mesa_free(ctable);
-      /* Get the color table from X */
-      ctable = (XMesaColor *) MALLOC(cmapSize * sizeof(XMesaColor));
-      assert(ctable);
-      for (i = 0; i < cmapSize; i++) {
-         ctable[i].pixel = i;
-      }
-      XQueryColors(dpy, cmap, ctable, cmapSize);
-      prevDisplay = dpy;
-      prevCmap = cmap;
-      prevCmapSize = cmapSize;
-   }
-#endif
-
-   /* Find best match. */
-   bestmatch = -1;
-   mindist = 0.0;
-   for (i = 0; i < cmapSize; i++) {
-      double dr = 0.30 * ((double) color->red - (double) ctable[i].red);
-      double dg = 0.59 * ((double) color->green - (double) ctable[i].green);
-      double db = 0.11 * ((double) color->blue - (double) ctable[i].blue);
-      double dist = dr * dr + dg * dg + db * db;
-      if (bestmatch < 0 || dist < mindist) {
-         bestmatch = i;
-         mindist = dist;
-      }
-   }
-
-   /* Return result. */
-   subColor.red   = ctable[bestmatch].red;
-   subColor.green = ctable[bestmatch].green;
-   subColor.blue  = ctable[bestmatch].blue;
-   /* Try to allocate the closest match color.  This should only
-    * fail if the cell is read/write.  Otherwise, we're incrementing
-    * the cell's reference count.
-    */
-#ifdef XFree86Server
-   if (AllocColor(cmap,
-		  &subColor.red, &subColor.green, &subColor.blue,
-		  &subColor.pixel,
-		  client) == Success) {
-#else
-   if (XAllocColor(dpy, cmap, &subColor)) {
-#endif
-      *alloced = 1;
-   }
-   else {
-      /* do this to work around a problem reported by Frank Ortega */
-      subColor.pixel = (unsigned long) bestmatch;
-      subColor.red   = ctable[bestmatch].red;
-      subColor.green = ctable[bestmatch].green;
-      subColor.blue  = ctable[bestmatch].blue;
-      subColor.flags = DoRed | DoGreen | DoBlue;
-      *alloced = 0;
-   }
-#ifdef XFree86Server
-   _mesa_free(ppixIn);
-   _mesa_free(ctable);
-#else
-   /* don't free table, save it for next time */
-#endif
-
-   *color = subColor;
-   *exact = 0;
-}
-
-
-
-/**
- * Do setup for PF_GRAYSCALE pixel format.
- * Note that buffer may be NULL.
- */
-static GLboolean
-setup_grayscale(int client, XMesaVisual v,
-                XMesaBuffer buffer, XMesaColormap cmap)
-{
-   if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) {
-      return GL_FALSE;
-   }
-
-   if (buffer) {
-      XMesaBuffer prevBuffer;
-
-      if (!cmap) {
-         return GL_FALSE;
-      }
-
-      prevBuffer = xmesa_find_buffer(v->display, cmap, buffer);
-      if (prevBuffer &&
-          (buffer->xm_visual->mesa_visual.rgbMode ==
-           prevBuffer->xm_visual->mesa_visual.rgbMode)) {
-         /* Copy colormap stuff from previous XMesaBuffer which uses same
-          * X colormap.  Do this to avoid time spent in noFaultXAllocColor.
-          */
-         copy_colortable_info(buffer, prevBuffer);
-      }
-      else {
-         /* Allocate 256 shades of gray */
-         int gray;
-         int colorsfailed = 0;
-         for (gray=0;gray<256;gray++) {
-            GLint r = gamma_adjust( v->RedGamma,   gray, 255 );
-            GLint g = gamma_adjust( v->GreenGamma, gray, 255 );
-            GLint b = gamma_adjust( v->BlueGamma,  gray, 255 );
-            int exact, alloced;
-            XMesaColor xcol;
-            xcol.red   = (r << 8) | r;
-            xcol.green = (g << 8) | g;
-            xcol.blue  = (b << 8) | b;
-            noFaultXAllocColor( client, v->display,
-                                cmap, GET_COLORMAP_SIZE(v),
-                                &xcol, &exact, &alloced );
-            if (!exact) {
-               colorsfailed++;
-            }
-            if (alloced) {
-               assert(buffer->num_alloced<256);
-               buffer->alloced_colors[buffer->num_alloced] = xcol.pixel;
-               buffer->num_alloced++;
-            }
-
-            /*OLD
-            assert(gray < 576);
-            buffer->color_table[gray*3+0] = xcol.pixel;
-            buffer->color_table[gray*3+1] = xcol.pixel;
-            buffer->color_table[gray*3+2] = xcol.pixel;
-            assert(xcol.pixel < 65536);
-            buffer->pixel_to_r[xcol.pixel] = gray * 30 / 100;
-            buffer->pixel_to_g[xcol.pixel] = gray * 59 / 100;
-            buffer->pixel_to_b[xcol.pixel] = gray * 11 / 100;
-            */
-            buffer->color_table[gray] = xcol.pixel;
-            assert(xcol.pixel < 65536);
-            buffer->pixel_to_r[xcol.pixel] = gray;
-            buffer->pixel_to_g[xcol.pixel] = gray;
-            buffer->pixel_to_b[xcol.pixel] = gray;
-         }
-
-         if (colorsfailed && _mesa_getenv("MESA_DEBUG")) {
-            _mesa_warning(NULL,
-                  "Note: %d out of 256 needed colors do not match exactly.\n",
-                  colorsfailed );
-         }
-      }
-   }
-
-   v->dithered_pf = PF_Grayscale;
-   v->undithered_pf = PF_Grayscale;
-   return GL_TRUE;
-}
-
-
-
-/**
- * Setup RGB rendering for a window with a PseudoColor, StaticColor,
- * or 8-bit TrueColor visual visual.  We try to allocate a palette of 225
- * colors (5 red, 9 green, 5 blue) and dither to approximate a 24-bit RGB
- * color.  While this function was originally designed just for 8-bit
- * visuals, it has also proven to work from 4-bit up to 16-bit visuals.
- * Dithering code contributed by Bob Mercier.
- */
-static GLboolean
-setup_dithered_color(int client, XMesaVisual v,
-                     XMesaBuffer buffer, XMesaColormap cmap)
-{
-   if (GET_VISUAL_DEPTH(v)<4 || GET_VISUAL_DEPTH(v)>16) {
-      return GL_FALSE;
-   }
-
-   if (buffer) {
-      XMesaBuffer prevBuffer;
-
-      if (!cmap) {
-         return GL_FALSE;
-      }
-
-      prevBuffer = xmesa_find_buffer(v->display, cmap, buffer);
-      if (prevBuffer &&
-          (buffer->xm_visual->mesa_visual.rgbMode ==
-           prevBuffer->xm_visual->mesa_visual.rgbMode)) {
-         /* Copy colormap stuff from previous, matching XMesaBuffer.
-          * Do this to avoid time spent in noFaultXAllocColor.
-          */
-         copy_colortable_info(buffer, prevBuffer);
-      }
-      else {
-         /* Allocate X colors and initialize color_table[], red_table[], etc */
-         int r, g, b, i;
-         int colorsfailed = 0;
-         for (r = 0; r < DITH_R; r++) {
-            for (g = 0; g < DITH_G; g++) {
-               for (b = 0; b < DITH_B; b++) {
-                  XMesaColor xcol;
-                  int exact, alloced;
-                  xcol.red  =gamma_adjust(v->RedGamma,   r*65535/(DITH_R-1),65535);
-                  xcol.green=gamma_adjust(v->GreenGamma, g*65535/(DITH_G-1),65535);
-                  xcol.blue =gamma_adjust(v->BlueGamma,  b*65535/(DITH_B-1),65535);
-                  noFaultXAllocColor( client, v->display,
-                                      cmap, GET_COLORMAP_SIZE(v),
-                                      &xcol, &exact, &alloced );
-                  if (!exact) {
-                     colorsfailed++;
-                  }
-                  if (alloced) {
-                     assert(buffer->num_alloced<256);
-                     buffer->alloced_colors[buffer->num_alloced] = xcol.pixel;
-                     buffer->num_alloced++;
-                  }
-                  i = DITH_MIX( r, g, b );
-                  assert(i < 576);
-                  buffer->color_table[i] = xcol.pixel;
-                  assert(xcol.pixel < 65536);
-                  buffer->pixel_to_r[xcol.pixel] = r * 255 / (DITH_R-1);
-                  buffer->pixel_to_g[xcol.pixel] = g * 255 / (DITH_G-1);
-                  buffer->pixel_to_b[xcol.pixel] = b * 255 / (DITH_B-1);
-               }
-            }
-         }
-
-         if (colorsfailed && _mesa_getenv("MESA_DEBUG")) {
-            _mesa_warning(NULL,
-                  "Note: %d out of %d needed colors do not match exactly.\n",
-                  colorsfailed, DITH_R * DITH_G * DITH_B );
-         }
-      }
-   }
-
-   v->dithered_pf = PF_Dither;
-   v->undithered_pf = PF_Lookup;
-   return GL_TRUE;
-}
-
-
-/**
- * Setup RGB rendering for a window with a True/DirectColor visual.
+ * Choose the pixel format for the given visual.
+ * This will tell the gallium driver how to pack pixel data into
+ * drawing surfaces.
  */
-static void
-setup_truecolor(XMesaVisual v, XMesaBuffer buffer, XMesaColormap cmap)
+static GLuint
+choose_pixel_format(XMesaVisual v)
 {
-   unsigned long rmask, gmask, bmask;
-   (void) buffer;
-   (void) cmap;
-
-   /* Compute red multiplier (mask) and bit shift */
-   v->rshift = 0;
-   rmask = GET_REDMASK(v);
-   while ((rmask & 1)==0) {
-      v->rshift++;
-      rmask = rmask >> 1;
-   }
-
-   /* Compute green multiplier (mask) and bit shift */
-   v->gshift = 0;
-   gmask = GET_GREENMASK(v);
-   while ((gmask & 1)==0) {
-      v->gshift++;
-      gmask = gmask >> 1;
-   }
-
-   /* Compute blue multiplier (mask) and bit shift */
-   v->bshift = 0;
-   bmask = GET_BLUEMASK(v);
-   while ((bmask & 1)==0) {
-      v->bshift++;
-      bmask = bmask >> 1;
-   }
-
-   /*
-    * Compute component-to-pixel lookup tables and dithering kernel
-    */
-   {
-      static GLubyte kernel[16] = {
-          0*16,  8*16,  2*16, 10*16,
-         12*16,  4*16, 14*16,  6*16,
-          3*16, 11*16,  1*16,  9*16,
-         15*16,  7*16, 13*16,  5*16,
-      };
-      GLint rBits = _mesa_bitcount(rmask);
-      GLint gBits = _mesa_bitcount(gmask);
-      GLint bBits = _mesa_bitcount(bmask);
-      GLint maxBits;
-      GLuint i;
-
-      /* convert pixel components in [0,_mask] to RGB values in [0,255] */
-      for (i=0; i<=rmask; i++)
-         v->PixelToR[i] = (unsigned char) ((i * 255) / rmask);
-      for (i=0; i<=gmask; i++)
-         v->PixelToG[i] = (unsigned char) ((i * 255) / gmask);
-      for (i=0; i<=bmask; i++)
-         v->PixelToB[i] = (unsigned char) ((i * 255) / bmask);
-
-      /* convert RGB values from [0,255] to pixel components */
-
-      for (i=0;i<256;i++) {
-         GLint r = gamma_adjust(v->RedGamma,   i, 255);
-         GLint g = gamma_adjust(v->GreenGamma, i, 255);
-         GLint b = gamma_adjust(v->BlueGamma,  i, 255);
-         v->RtoPixel[i] = (r >> (8-rBits)) << v->rshift;
-         v->GtoPixel[i] = (g >> (8-gBits)) << v->gshift;
-         v->BtoPixel[i] = (b >> (8-bBits)) << v->bshift;
-      }
-      /* overflow protection */
-      for (i=256;i<512;i++) {
-         v->RtoPixel[i] = v->RtoPixel[255];
-         v->GtoPixel[i] = v->GtoPixel[255];
-         v->BtoPixel[i] = v->BtoPixel[255];
-      }
-
-      /* setup dithering kernel */
-      maxBits = rBits;
-      if (gBits > maxBits)  maxBits = gBits;
-      if (bBits > maxBits)  maxBits = bBits;
-      for (i=0;i<16;i++) {
-         v->Kernel[i] = kernel[i] >> maxBits;
-      }
-
-      v->undithered_pf = PF_Truecolor;
-      v->dithered_pf = (GET_VISUAL_DEPTH(v)<24) ? PF_Dither_True : PF_Truecolor;
-   }
-
-   /*
-    * Now check for TrueColor visuals which we can optimize.
-    */
-   if (   GET_REDMASK(v)  ==0x0000ff
-       && GET_GREENMASK(v)==0x00ff00
-       && GET_BLUEMASK(v) ==0xff0000
+   if (   GET_REDMASK(v)   == 0x0000ff
+       && GET_GREENMASK(v) == 0x00ff00
+       && GET_BLUEMASK(v)  == 0xff0000
        && CHECK_BYTE_ORDER(v)
-       && v->BitsPerPixel==32
-       && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) {
+       && v->BitsPerPixel == 32) {
       /* common 32 bpp config used on SGI, Sun */
-      v->undithered_pf = v->dithered_pf = PF_8A8B8G8R; /* ABGR */
-   }
-   else if (GET_REDMASK(v)  == 0xff0000
-         && GET_GREENMASK(v)== 0x00ff00
-         && GET_BLUEMASK(v) == 0x0000ff
-         && CHECK_BYTE_ORDER(v)
-         && v->RedGamma == 1.0 && v->GreenGamma == 1.0 && v->BlueGamma == 1.0){
-      if (v->BitsPerPixel==32) {
-         /* if 32 bpp, and visual indicates 8 bpp alpha channel */
-         if (GET_VISUAL_DEPTH(v) == 32 && v->mesa_visual.alphaBits == 8)
-            v->undithered_pf = v->dithered_pf = PF_8A8R8G8B; /* ARGB */
-         else
-            v->undithered_pf = v->dithered_pf = PF_8R8G8B; /* xRGB */
+      assert(0);
+      return 0 /* PIXEL_FORMAT_U_A8_B8_G8_A8 */;
+   }
+   else if (   GET_REDMASK(v)   == 0xff0000
+            && GET_GREENMASK(v) == 0x00ff00
+            && GET_BLUEMASK(v)  == 0x0000ff
+            && CHECK_BYTE_ORDER(v)) {
+      if (v->BitsPerPixel == 32) {
+         return PIPE_FORMAT_U_A8_R8_G8_B8;
       }
       else if (v->BitsPerPixel == 24) {
-         v->undithered_pf = v->dithered_pf = PF_8R8G8B24; /* RGB */
+         /* not supported yet */
+         abort();
+         return 0;
       }
    }
-   else if (GET_REDMASK(v)  ==0xf800
-       &&   GET_GREENMASK(v)==0x07e0
-       &&   GET_BLUEMASK(v) ==0x001f
-       && CHECK_BYTE_ORDER(v)
-       && v->BitsPerPixel==16
-       && v->RedGamma==1.0 && v->GreenGamma==1.0 && v->BlueGamma==1.0) {
+   else if (   GET_REDMASK(v)   == 0xf800
+            && GET_GREENMASK(v) == 0x07e0
+            && GET_BLUEMASK(v)  == 0x001f
+            && CHECK_BYTE_ORDER(v)
+            && v->BitsPerPixel == 16) {
       /* 5-6-5 RGB */
-      v->undithered_pf = PF_5R6G5B;
-      v->dithered_pf = PF_Dither_5R6G5B;
+      return PIPE_FORMAT_U_R5_G6_B5;
    }
-}
-
 
-
-/**
- * Setup RGB rendering for a window with a monochrome visual.
- */
-static void
-setup_monochrome( XMesaVisual v, XMesaBuffer b )
-{
-   (void) b;
-   v->dithered_pf = v->undithered_pf = PF_1Bit;
-   /* if black=1 then we must flip pixel values */
-   v->bitFlip = (GET_BLACK_PIXEL(v) != 0);
+   assert(0);
+   return 0;
 }
 
 
-
 /**
  * When a context is bound for the first time, we can finally finish
  * initializing the context's visual and buffer information.
@@ -976,10 +448,8 @@ initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
                              GLboolean rgb_flag, XMesaDrawable window,
                              XMesaColormap cmap)
 {
-   int client = 0;
-
 #ifdef XFree86Server
-   client = (window) ? CLIENT_ID(window->id) : 0;
+   int client = (window) ? CLIENT_ID(window->id) : 0;
 #endif
 
    ASSERT(!b || b->xm_visual == v);
@@ -989,47 +459,22 @@ initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
    assert(v->BitsPerPixel > 0);
 
    if (rgb_flag == GL_FALSE) {
-      /* COLOR-INDEXED WINDOW:
-       * Even if the visual is TrueColor or DirectColor we treat it as
-       * being color indexed.  This is weird but might be useful to someone.
-       */
-      v->dithered_pf = v->undithered_pf = PF_Index;
-      v->mesa_visual.indexBits = GET_VISUAL_DEPTH(v);
+      /* COLOR-INDEXED WINDOW: not supported*/
+      return GL_FALSE;
    }
    else {
       /* RGB WINDOW:
        * We support RGB rendering into almost any kind of visual.
        */
       const int xclass = v->mesa_visual.visualType;
-      if (xclass == GLX_TRUE_COLOR || xclass == GLX_DIRECT_COLOR) {
-	 setup_truecolor( v, b, cmap );
-      }
-      else if (xclass == GLX_STATIC_GRAY && GET_VISUAL_DEPTH(v) == 1) {
-	 setup_monochrome( v, b );
-      }
-      else if (xclass == GLX_GRAY_SCALE || xclass == GLX_STATIC_GRAY) {
-         if (!setup_grayscale( client, v, b, cmap )) {
-            return GL_FALSE;
-         }
-      }
-      else if ((xclass == GLX_PSEUDO_COLOR || xclass == GLX_STATIC_COLOR)
-               && GET_VISUAL_DEPTH(v)>=4 && GET_VISUAL_DEPTH(v)<=16) {
-	 if (!setup_dithered_color( client, v, b, cmap )) {
-            return GL_FALSE;
-         }
-      }
-      else {
-	 _mesa_warning(NULL, "XMesa: RGB mode rendering not supported in given visual.\n");
+      if (xclass != GLX_TRUE_COLOR && xclass == !GLX_DIRECT_COLOR) {
+	 _mesa_warning(NULL,
+            "XMesa: RGB mode rendering not supported in given visual.\n");
 	 return GL_FALSE;
       }
       v->mesa_visual.indexBits = 0;
-
-      if (_mesa_getenv("MESA_NO_DITHER")) {
-	 v->dithered_pf = v->undithered_pf;
-      }
    }
 
-
    /*
     * If MESA_INFO env var is set print out some debugging info
     * which can help Brian figure out what's going on when a user
@@ -1037,21 +482,14 @@ initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
     */
    if (_mesa_getenv("MESA_INFO")) {
       _mesa_printf("X/Mesa visual = %p\n", (void *) v);
-      _mesa_printf("X/Mesa dithered pf = %u\n", v->dithered_pf);
-      _mesa_printf("X/Mesa undithered pf = %u\n", v->undithered_pf);
       _mesa_printf("X/Mesa level = %d\n", v->mesa_visual.level);
       _mesa_printf("X/Mesa depth = %d\n", GET_VISUAL_DEPTH(v));
       _mesa_printf("X/Mesa bits per pixel = %d\n", v->BitsPerPixel);
    }
 
    if (b && window) {
-      char *data;
-
-      /* Do window-specific initializations */
-
       /* these should have been set in create_xmesa_buffer */
-      ASSERT(b->frontxrb->drawable == window);
-      ASSERT(b->frontxrb->pixmap == (XMesaPixmap) window);
+      ASSERT(b->drawable == window);
 
       /* Setup for single/double buffering */
       if (v->mesa_visual.doubleBufferMode) {
@@ -1059,59 +497,13 @@ initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
          b->shm = check_for_xshm( v->display );
       }
 
-      /* X11 graphics contexts */
+      /* X11 graphics context */
 #ifdef XFree86Server
       b->gc = CreateScratchGC(v->display, window->depth);
 #else
       b->gc = XCreateGC( v->display, window, 0, NULL );
 #endif
       XMesaSetFunction( v->display, b->gc, GXcopy );
-
-      /* cleargc - for glClear() */
-#ifdef XFree86Server
-      b->cleargc = CreateScratchGC(v->display, window->depth);
-#else
-      b->cleargc = XCreateGC( v->display, window, 0, NULL );
-#endif
-      XMesaSetFunction( v->display, b->cleargc, GXcopy );
-
-      /*
-       * Don't generate Graphics Expose/NoExpose events in swapbuffers().
-       * Patch contributed by Michael Pichler May 15, 1995.
-       */
-#ifdef XFree86Server
-      b->swapgc = CreateScratchGC(v->display, window->depth);
-      {
-         CARD32 v[1];
-         v[0] = FALSE;
-         dixChangeGC(NullClient, b->swapgc, GCGraphicsExposures, v, NULL);
-      }
-#else
-      {
-         XGCValues gcvalues;
-         gcvalues.graphics_exposures = False;
-         b->swapgc = XCreateGC(v->display, window,
-                               GCGraphicsExposures, &gcvalues);
-      }
-#endif
-      XMesaSetFunction( v->display, b->swapgc, GXcopy );
-
-      /* Initialize the row buffer XImage for use in write_color_span() */
-      data = (char*) MALLOC(MAX_WIDTH*4);
-#ifdef XFree86Server
-      b->rowimage = XMesaCreateImage(GET_VISUAL_DEPTH(v), MAX_WIDTH, 1, data);
-#else
-      b->rowimage = XCreateImage( v->display,
-                                  v->visinfo->visual,
-                                  v->visinfo->depth,
-                                  ZPixmap, 0,           /*format, offset*/
-                                  data,                 /*data*/
-                                  MAX_WIDTH, 1,         /*width, height*/
-                                  32,                   /*bitmap_pad*/
-                                  0                     /*bytes_per_line*/ );
-#endif
-      if (!b->rowimage)
-         return GL_FALSE;
    }
 
    return GL_TRUE;
@@ -1119,65 +511,6 @@ initialize_visual_and_buffer(XMesaVisual v, XMesaBuffer b,
 
 
 
-/*
- * Convert an RGBA color to a pixel value.
- */
-unsigned long
-xmesa_color_to_pixel(XMesaContext xmesa,
-                     GLubyte r, GLubyte g, GLubyte b, GLubyte a,
-                     GLuint pixelFormat)
-{
-   GLcontext *ctx = xmesa->st->ctx;
-
-   switch (pixelFormat) {
-      case PF_Index:
-         return 0;
-      case PF_Truecolor:
-         {
-            unsigned long p;
-            PACK_TRUECOLOR( p, r, g, b );
-            return p;
-         }
-      case PF_8A8B8G8R:
-         return PACK_8A8B8G8R( r, g, b, a );
-      case PF_8A8R8G8B:
-         return PACK_8A8R8G8B( r, g, b, a );
-      case PF_8R8G8B:
-         /* fall through */
-      case PF_8R8G8B24:
-         return PACK_8R8G8B( r, g, b );
-      case PF_5R6G5B:
-         return PACK_5R6G5B( r, g, b );
-      case PF_Dither:
-         {
-            DITHER_SETUP;
-            return DITHER( 1, 0, r, g, b );
-         }
-      case PF_1Bit:
-         /* 382 = (3*255)/2 */
-         return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip;
-      case PF_Lookup:
-         {
-            LOOKUP_SETUP;
-            return LOOKUP( r, g, b );
-         }
-      case PF_Grayscale:
-         return GRAY_RGB( r, g, b );
-      case PF_Dither_True:
-         /* fall through */
-      case PF_Dither_5R6G5B:
-         {
-            unsigned long p;
-            PACK_TRUEDITHER(p, 1, 0, r, g, b);
-            return p;
-         }
-      default:
-         _mesa_problem(ctx, "Bad pixel format in xmesa_color_to_pixel");
-   }
-   return 0;
-}
-
-
 #define NUM_VISUAL_TYPES   6
 
 /**
@@ -1252,7 +585,6 @@ XMesaVisual XMesaCreateVisual( XMesaDisplay *display,
                                GLint level,
                                GLint visualCaveat )
 {
-   char *gamma;
    XMesaVisual v;
    GLint red_bits, green_bits, blue_bits, alpha_bits;
 
@@ -1287,19 +619,6 @@ XMesaVisual XMesaCreateVisual( XMesaDisplay *display,
    MEMCPY(v->visinfo, visinfo, sizeof(*visinfo));
 #endif
 
-   /* check for MESA_GAMMA environment variable */
-   gamma = _mesa_getenv("MESA_GAMMA");
-   if (gamma) {
-      v->RedGamma = v->GreenGamma = v->BlueGamma = 0.0;
-      sscanf( gamma, "%f %f %f", &v->RedGamma, &v->GreenGamma, &v->BlueGamma );
-      if (v->RedGamma<=0.0)    v->RedGamma = 1.0;
-      if (v->GreenGamma<=0.0)  v->GreenGamma = v->RedGamma;
-      if (v->BlueGamma<=0.0)   v->BlueGamma = v->RedGamma;
-   }
-   else {
-      v->RedGamma = v->GreenGamma = v->BlueGamma = 1.0;
-   }
-
    v->ximage_flag = ximage_flag;
 
 #ifdef XFree86Server
@@ -1388,66 +707,6 @@ void XMesaDestroyVisual( XMesaVisual v )
 
 
 
-static void
-finish_or_flush( GLcontext *ctx )
-{
-#ifdef XFree86Server
-   /* NOT_NEEDED */
-#else
-   const XMesaContext xmesa = XMESA_CONTEXT(ctx);
-   ctx->st->pipe->flush(ctx->st->pipe, 0);
-   if (xmesa) {
-      _glthread_LOCK_MUTEX(_xmesa_lock);
-      XSync( xmesa->display, False );
-      _glthread_UNLOCK_MUTEX(_xmesa_lock);
-   }
-#endif
-}
-
-
-/**
- * Called by glViewport.
- * This is a good time for us to poll the current X window size and adjust
- * our renderbuffers to match the current window size.
- * Remember, we have no opportunity to respond to conventional
- * X Resize/StructureNotify events since the X driver has no event loop.
- * Thus, we poll.
- * Note that this trick isn't fool-proof.  If the application never calls
- * glViewport, our notion of the current window size may be incorrect.
- * That problem led to the GLX_MESA_resize_buffers extension.
- */
-static void
-xmesa_viewport(GLcontext *ctx, GLint x, GLint y, GLsizei w, GLsizei h)
-{
-   XMesaContext xmctx = XMESA_CONTEXT(ctx);
-   XMesaBuffer xmdrawbuf = XMESA_BUFFER(ctx->WinSysDrawBuffer);
-   XMesaBuffer xmreadbuf = XMESA_BUFFER(ctx->WinSysReadBuffer);
-   xmesa_check_and_update_buffer_size(xmctx, xmdrawbuf);
-   xmesa_check_and_update_buffer_size(xmctx, xmreadbuf);
-   (void) x;
-   (void) y;
-   (void) w;
-   (void) h;
-}
-
-
-/**
- * Initialize the device driver function table with the functions
- * we implement in this driver.
- */
-static void
-xmesa_init_driver_functions(struct dd_function_table *driver)
-{
-#if 0 /* not needed for now */
-   driver->Flush = finish_or_flush;
-   driver->Finish = finish_or_flush;
-#else
-   (void) finish_or_flush;
-#endif
-   driver->Viewport = xmesa_viewport;
-}
-
-
 /**
  * Create a new XMesaContext.
  * \param v  the XMesaVisual
@@ -1462,6 +721,7 @@ XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list )
    struct pipe_context *pipe;
    XMesaContext c;
    GLcontext *mesaCtx;
+   uint pf;
 
    if (firstTime) {
       _glthread_INIT_MUTEX(_xmesa_lock);
@@ -1473,7 +733,9 @@ XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list )
    if (!c)
       return NULL;
 
-   pipe = xmesa_create_context( c );
+   pf = choose_pixel_format(v);
+
+   pipe = xmesa_create_pipe_context( c, pf );
 
    c->st = st_create_context(pipe, &v->mesa_visual,
                              share_list ? share_list->st : NULL);
@@ -1495,27 +757,11 @@ XMesaContext XMesaCreateContext( XMesaVisual v, XMesaContext share_list )
    mesaCtx->Const.CheckArrayBounds = GL_TRUE;
 #endif
 
-   xmesa_init_driver_functions(&mesaCtx->Driver);
-
    /* finish up xmesa context initializations */
-   c->swapbytes = CHECK_BYTE_ORDER(v) ? GL_FALSE : GL_TRUE;
    c->xm_visual = v;
    c->xm_buffer = NULL;   /* set later by XMesaMakeCurrent */
-   c->display = v->display;
-   c->pixelformat = v->dithered_pf;      /* Dithering is enabled by default */
-
-   /* override these functions, as if the xlib driver were derived from
-    * the softpipe driver.
-    */
-   pipe->get_tile = xmesa_get_tile;
-   pipe->put_tile = xmesa_put_tile;
-   pipe->get_tile_rgba = xmesa_get_tile_rgba;
-   pipe->put_tile_rgba = xmesa_put_tile_rgba;
 
-   c->st->haveFramebufferSurfaces = GL_FALSE;
-
-   /* special pipe->clear function */
-   pipe->clear = xmesa_clear;
+   c->st->haveFramebufferSurfaces = GL_TRUE;
 
    return c;
 }
@@ -1735,8 +981,8 @@ XMesaDestroyBuffer(XMesaBuffer b)
  * and all attached renderbuffers.
  * Called when:
  *  1. the first time a buffer is bound to a context.
- *  2. from glViewport to poll for window size changes
- *  3. from the XMesaResizeBuffers() API function.
+ *  2. from the XMesaResizeBuffers() API function.
+ *  3. SwapBuffers.  XXX probabaly from xm_flush_frontbuffer() too...
  * Note: it's possible (and legal) for xmctx to be NULL.  That can happen
  * when resizing a buffer when no rendering context is bound.
  */
@@ -1744,7 +990,7 @@ void
 xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer)
 {
    GLuint width, height;
-   xmesa_get_window_size(drawBuffer->display, drawBuffer, &width, &height);
+   xmesa_get_window_size(drawBuffer->xm_visual->display, drawBuffer, &width, &height);
    st_resize_framebuffer(drawBuffer->stfb, width, height);
 }
 
@@ -1774,7 +1020,7 @@ GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer,
       if (&(c->mesa) == _mesa_get_current_context()
           && c->mesa.DrawBuffer == &drawBuffer->mesa_buffer
           && c->mesa.ReadBuffer == &readBuffer->mesa_buffer
-          && XMESA_BUFFER(c->mesa.DrawBuffer)->wasCurrent) {
+          && xmesa_buffer(c->mesa.DrawBuffer)->wasCurrent) {
          /* same context and buffer, do nothing */
          return GL_TRUE;
       }
@@ -1793,22 +1039,6 @@ GLboolean XMesaMakeCurrent2( XMesaContext c, XMesaBuffer drawBuffer,
 
       st_make_current(c->st, drawBuffer->stfb, readBuffer->stfb);
 
-#if 0
-      if (c->xm_visual->mesa_visual.rgbMode) {
-         /*
-          * Must recompute and set these pixel values because colormap
-          * can be different for different windows.
-          */
-         c->clearpixel = xmesa_color_to_pixel( c,
-                                               c->clearcolor[0],
-                                               c->clearcolor[1],
-                                               c->clearcolor[2],
-                                               c->clearcolor[3],
-                                               c->xm_visual->undithered_pf);
-         XMesaSetForeground(c->display, drawBuffer->cleargc, c->clearpixel);
-      }
-#endif
-
       /* Solution to Stephane Rehel's problem with glXReleaseBuffersMESA(): */
       drawBuffer->wasCurrent = GL_TRUE;
    }
@@ -1834,7 +1064,7 @@ XMesaContext XMesaGetCurrentContext( void )
 {
    GET_CURRENT_CONTEXT(ctx);
    if (ctx) {
-      XMesaContext xmesa = XMESA_CONTEXT(ctx);
+      XMesaContext xmesa = xmesa_context(ctx);
       return xmesa;
    }
    else {
@@ -1847,7 +1077,7 @@ XMesaBuffer XMesaGetCurrentBuffer( void )
 {
    GET_CURRENT_CONTEXT(ctx);
    if (ctx) {
-      XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
+      XMesaBuffer xmbuf = xmesa_buffer(ctx->DrawBuffer);
       return xmbuf;
    }
    else {
@@ -1861,7 +1091,7 @@ XMesaBuffer XMesaGetCurrentReadBuffer( void )
 {
    GET_CURRENT_CONTEXT(ctx);
    if (ctx) {
-      return XMESA_BUFFER(ctx->ReadBuffer);
+      return xmesa_buffer(ctx->ReadBuffer);
    }
    else {
       return 0;
@@ -1922,62 +1152,19 @@ GLboolean XMesaSetFXmode( GLint mode )
 PUBLIC
 void XMesaSwapBuffers( XMesaBuffer b )
 {
-   if (!b->backxrb) {
-      /* single buffered */
-      return;
-   }
+   struct pipe_surface *surf;
 
    /* If we're swapping the buffer associated with the current context
     * we have to flush any pending rendering commands first.
     */
    st_notify_swapbuffers(b->stfb);
 
-   if (b->db_mode) {
-      if (b->backxrb->ximage) {
-	 /* Copy Ximage (back buf) from client memory to server window */
-#if defined(USE_XSHM) && !defined(XFree86Server)
-	 if (b->shm) {
-            /*_glthread_LOCK_MUTEX(_xmesa_lock);*/
-	    XShmPutImage( b->xm_visual->display, b->frontxrb->drawable,
-			  b->swapgc,
-			  b->backxrb->ximage, 0, 0,
-			  0, 0, xmesa_buffer_width(b), xmesa_buffer_height(b),
-                          False );
-            /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/
-	 }
-	 else
-#endif
-         {
-            /*_glthread_LOCK_MUTEX(_xmesa_lock);*/
-            XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable,
-			   b->swapgc,
-			   b->backxrb->ximage, 0, 0,
-                           0, 0,
-                           xmesa_buffer_width(b), xmesa_buffer_height(b));
-            /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/
-         }
-      }
-      else if (b->backxrb->pixmap) {
-	 /* Copy pixmap (back buf) to window (front buf) on server */
-         /*_glthread_LOCK_MUTEX(_xmesa_lock);*/
-	 XMesaCopyArea( b->xm_visual->display,
-			b->backxrb->pixmap,   /* source drawable */
-			b->frontxrb->drawable,  /* dest. drawable */
-			b->swapgc,
-                        0, 0, xmesa_buffer_width(b), xmesa_buffer_height(b),
-			0, 0                 /* dest region */
-		      );
-         /*_glthread_UNLOCK_MUTEX(_xmesa_lock);*/
-      }
-
-      if (b->swAlpha) {
-         GET_CURRENT_CONTEXT(ctx);
-         _mesa_copy_soft_alpha_renderbuffers(ctx, &b->stfb->Base);
-      }
+   surf = st_get_framebuffer_surface(b->stfb, ST_SURFACE_BACK_LEFT);
+   if (surf) {
+      xmesa_display_surface(b, surf);
    }
-#if !defined(XFree86Server)
-   XSync( b->xm_visual->display, False );
-#endif
+
+   xmesa_check_and_update_buffer_size(NULL, b);
 }
 
 
@@ -1987,82 +1174,22 @@ void XMesaSwapBuffers( XMesaBuffer b )
  */
 void XMesaCopySubBuffer( XMesaBuffer b, int x, int y, int width, int height )
 {
-   if (!b->backxrb) {
-      /* single buffered */
-      return; 
-   }
+   struct pipe_surface *surf_front
+      = st_get_framebuffer_surface(b->stfb, ST_SURFACE_FRONT_LEFT);
+   struct pipe_surface *surf_back
+      = st_get_framebuffer_surface(b->stfb, ST_SURFACE_BACK_LEFT);
+   struct pipe_context *pipe = NULL; /* XXX fix */
 
-   /* If we're swapping the buffer associated with the current context
-    * we have to flush any pending rendering commands first.
-    */
-   st_notify_swapbuffers(b->stfb);
+   if (!surf_front || !surf_back)
+      return;
 
-   if (b->db_mode) {
-      int yTop = xmesa_buffer_height(b) - y - height;
-      if (b->backxrb->ximage) {
-         /* Copy Ximage from host's memory to server's window */
-#if defined(USE_XSHM) && !defined(XFree86Server)
-         if (b->shm) {
-            /* XXX assuming width and height aren't too large! */
-            XShmPutImage( b->xm_visual->display, b->frontxrb->drawable,
-                          b->swapgc,
-                          b->backxrb->ximage, x, yTop,
-                          x, yTop, width, height, False );
-            /* wait for finished event??? */
-         }
-         else
-#endif
-         {
-            /* XXX assuming width and height aren't too large! */
-            XMesaPutImage( b->xm_visual->display, b->frontxrb->drawable,
-			   b->swapgc,
-			   b->backxrb->ximage, x, yTop,
-			   x, yTop, width, height );
-         }
-      }
-      else {
-         /* Copy pixmap to window on server */
-         XMesaCopyArea( b->xm_visual->display,
-			b->backxrb->pixmap,           /* source drawable */
-			b->frontxrb->drawable,        /* dest. drawable */
-			b->swapgc,
-			x, yTop, width, height,  /* source region */
-			x, yTop                  /* dest region */
-                      );
-      }
-   }
+   pipe->surface_copy(pipe,
+                      surf_front, x, y,  /* dest */
+                      surf_back, x, y,   /* src */
+                      width, height);
 }
 
 
-/*
- * Return a pointer to the XMesa backbuffer Pixmap or XImage.  This function
- * is a way to get "under the hood" of X/Mesa so one can manipulate the
- * back buffer directly.
- * Output:  pixmap - pointer to back buffer's Pixmap, or 0
- *          ximage - pointer to back buffer's XImage, or NULL
- * Return:  GL_TRUE = context is double buffered
- *          GL_FALSE = context is single buffered
- */
-#ifndef XFree86Server
-GLboolean XMesaGetBackBuffer( XMesaBuffer b,
-                              XMesaPixmap *pixmap,
-                              XMesaImage **ximage )
-{
-   if (b->db_mode) {
-      if (pixmap)
-         *pixmap = b->backxrb->pixmap;
-      if (ximage)
-         *ximage = b->backxrb->ximage;
-      return GL_TRUE;
-   }
-   else {
-      *pixmap = 0;
-      *ximage = NULL;
-      return GL_FALSE;
-   }
-}
-#endif /* XFree86Server */
-
 
 /*
  * Return the depth buffer associated with an XMesaBuffer.
@@ -2075,33 +1202,32 @@ GLboolean XMesaGetBackBuffer( XMesaBuffer b,
 GLboolean XMesaGetDepthBuffer( XMesaBuffer b, GLint *width, GLint *height,
                                GLint *bytesPerValue, void **buffer )
 {
-   struct gl_renderbuffer *rb
-      = b->stfb->Base.Attachment[BUFFER_DEPTH].Renderbuffer;
-   if (!rb || !rb->Data) {
+   struct pipe_surface *surf
+      = st_get_framebuffer_surface(b->stfb, ST_SURFACE_DEPTH);
+   if (surf) {
+      *width = surf->width;
+      *height = surf->pitch;
+      *bytesPerValue = surf->cpp;
+      *buffer = surf->map;
+      return GL_TRUE;
+   }
+   else {
       *width = 0;
       *height = 0;
       *bytesPerValue = 0;
       *buffer = 0;
       return GL_FALSE;
    }
-   else {
-      *width = xmesa_buffer_width(b);
-      *height = xmesa_buffer_height(b);
-      *bytesPerValue = b->stfb->Base.Visual.depthBits <= 16
-         ? sizeof(GLushort) : sizeof(GLuint);
-      *buffer = rb->Data;
-      return GL_TRUE;
-   }
 }
 
 
 void XMesaFlush( XMesaContext c )
 {
-   if (c && c->display) {
+   if (c && c->xm_visual->display) {
 #ifdef XFree86Server
       /* NOT_NEEDED */
 #else
-      XSync( c->display, False );
+      XSync( c->xm_visual->display, False );
 #endif
    }
 }
@@ -2128,7 +1254,7 @@ XMesaBuffer XMesaFindBuffer( XMesaDisplay *dpy, XMesaDrawable d )
 {
    XMesaBuffer b;
    for (b=XMesaBufferList; b; b=b->Next) {
-      if (b->frontxrb->drawable == d && b->display == dpy) {
+      if (b->drawable == d && b->xm_visual->display == dpy) {
          return b;
       }
    }
@@ -2144,7 +1270,7 @@ void xmesa_destroy_buffers_on_display(XMesaDisplay *dpy)
    XMesaBuffer b, next;
    for (b = XMesaBufferList; b; b = next) {
       next = b->Next;
-      if (b->display == dpy) {
+      if (b->xm_visual->display == dpy) {
          xmesa_free_buffer(b);
       }
    }
@@ -2160,12 +1286,15 @@ void XMesaGarbageCollect( void )
    XMesaBuffer b, next;
    for (b=XMesaBufferList; b; b=next) {
       next = b->Next;
-      if (b->display && b->frontxrb->drawable && b->type == WINDOW) {
+      if (b->xm_visual &&
+          b->xm_visual->display &&
+          b->drawable &&
+          b->type == WINDOW) {
 #ifdef XFree86Server
 	 /* NOT_NEEDED */
 #else
-         XSync(b->display, False);
-         if (!window_exists( b->display, b->frontxrb->drawable )) {
+         XSync(b->xm_visual->display, False);
+         if (!window_exists( b->xm_visual->display, b->drawable )) {
             /* found a dead window, free the ancillary info */
             XMesaDestroyBuffer( b );
          }
@@ -2179,55 +1308,7 @@ unsigned long XMesaDitherColor( XMesaContext xmesa, GLint x, GLint y,
                                 GLfloat red, GLfloat green,
                                 GLfloat blue, GLfloat alpha )
 {
-   GLcontext *ctx = xmesa->st->ctx;
-   GLint r = (GLint) (red   * 255.0F);
-   GLint g = (GLint) (green * 255.0F);
-   GLint b = (GLint) (blue  * 255.0F);
-   GLint a = (GLint) (alpha * 255.0F);
-
-   switch (xmesa->pixelformat) {
-      case PF_Index:
-         return 0;
-      case PF_Truecolor:
-         {
-            unsigned long p;
-            PACK_TRUECOLOR( p, r, g, b );
-            return p;
-         }
-      case PF_8A8B8G8R:
-         return PACK_8A8B8G8R( r, g, b, a );
-      case PF_8A8R8G8B:
-         return PACK_8A8R8G8B( r, g, b, a );
-      case PF_8R8G8B:
-         return PACK_8R8G8B( r, g, b );
-      case PF_5R6G5B:
-         return PACK_5R6G5B( r, g, b );
-      case PF_Dither:
-         {
-            DITHER_SETUP;
-            return DITHER( x, y, r, g, b );
-         }
-      case PF_1Bit:
-         /* 382 = (3*255)/2 */
-         return ((r+g+b) > 382) ^ xmesa->xm_visual->bitFlip;
-      case PF_Lookup:
-         {
-            LOOKUP_SETUP;
-            return LOOKUP( r, g, b );
-         }
-      case PF_Grayscale:
-         return GRAY_RGB( r, g, b );
-      case PF_Dither_5R6G5B:
-         /* fall through */
-      case PF_Dither_True:
-         {
-            unsigned long p;
-            PACK_TRUEDITHER(p, x, y, r, g, b);
-            return p;
-         }
-      default:
-         _mesa_problem(NULL, "Bad pixel format in XMesaDitherColor");
-   }
+   /* no longer supported */
    return 0;
 }
 
@@ -2240,149 +1321,19 @@ PUBLIC void
 XMesaResizeBuffers( XMesaBuffer b )
 {
    GET_CURRENT_CONTEXT(ctx);
-   XMesaContext xmctx = XMESA_CONTEXT(ctx);
+   XMesaContext xmctx = xmesa_context(ctx);
    if (!xmctx)
       return;
    xmesa_check_and_update_buffer_size(xmctx, b);
 }
 
 
-static GLint
-xbuffer_to_renderbuffer(int buffer)
-{
-   assert(MAX_AUX_BUFFERS <= 4);
-
-   switch (buffer) {
-   case GLX_FRONT_LEFT_EXT:
-      return BUFFER_FRONT_LEFT;
-   case GLX_FRONT_RIGHT_EXT:
-      return BUFFER_FRONT_RIGHT;
-   case GLX_BACK_LEFT_EXT:
-      return BUFFER_BACK_LEFT;
-   case GLX_BACK_RIGHT_EXT:
-      return BUFFER_BACK_RIGHT;
-   case GLX_AUX0_EXT:
-      return BUFFER_AUX0;
-   case GLX_AUX1_EXT:
-      return BUFFER_AUX1;
-   case GLX_AUX2_EXT:
-      return BUFFER_AUX2;
-   case GLX_AUX3_EXT:
-      return BUFFER_AUX3;
-   case GLX_AUX4_EXT:
-   case GLX_AUX5_EXT:
-   case GLX_AUX6_EXT:
-   case GLX_AUX7_EXT:
-   case GLX_AUX8_EXT:
-   case GLX_AUX9_EXT:
-   default:
-      /* BadValue error */
-      return -1;
-   }
-}
 
 
 PUBLIC void
 XMesaBindTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer,
                   const int *attrib_list)
 {
-#if 0
-   GET_CURRENT_CONTEXT(ctx);
-   const GLuint unit = ctx->Texture.CurrentUnit;
-   struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
-   struct gl_texture_object *texObj;
-#endif
-   struct gl_renderbuffer *rb;
-   struct xmesa_renderbuffer *xrb;
-   GLint b;
-   XMesaImage *img = NULL;
-   GLboolean freeImg = GL_FALSE;
-
-   b = xbuffer_to_renderbuffer(buffer);
-   if (b < 0)
-      return;
-
-   if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_NONE_EXT)
-      return; /* BadMatch error */
-
-   rb = drawable->stfb->Base.Attachment[b].Renderbuffer;
-   if (!rb) {
-      /* invalid buffer */
-      return;
-   }
-   xrb = xmesa_renderbuffer(rb);
-
-#if 0
-   switch (drawable->TextureTarget) {
-   case GLX_TEXTURE_1D_EXT:
-      texObj = texUnit->Current1D;
-      break;
-   case GLX_TEXTURE_2D_EXT:
-      texObj = texUnit->Current2D;
-      break;
-   case GLX_TEXTURE_RECTANGLE_EXT:
-      texObj = texUnit->CurrentRect;
-      break;
-   default:
-      return; /* BadMatch error */
-   }
-#endif
-
-   /*
-    * The following is a quick and simple way to implement
-    * BindTexImage.  The better way is to write some new FetchTexel()
-    * functions which would extract texels from XImages.  We'd still
-    * need to use GetImage when texturing from a Pixmap (front buffer)
-    * but texturing from a back buffer (XImage) would avoid an image
-    * copy.
-    */
-
-   /* get XImage */
-   if (xrb->pixmap) {
-      img = XMesaGetImage(dpy, xrb->pixmap, 0, 0, rb->Width, rb->Height, ~0L,
-			  ZPixmap);
-      freeImg = GL_TRUE;
-   }
-   else if (xrb->ximage) {
-      img = xrb->ximage;
-   }
-
-   /* store the XImage as a new texture image */
-   if (img) {
-      GLenum format, type, intFormat;
-      if (img->bits_per_pixel == 32) {
-         format = GL_BGRA;
-         type = GL_UNSIGNED_BYTE;
-         intFormat = GL_RGBA;
-      }
-      else if (img->bits_per_pixel == 24) {
-         format = GL_BGR;
-         type = GL_UNSIGNED_BYTE;
-         intFormat = GL_RGB;
-      }
-      else if (img->bits_per_pixel == 16) {
-         format = GL_BGR;
-         type = GL_UNSIGNED_SHORT_5_6_5;
-         intFormat = GL_RGB;
-      }
-      else {
-         _mesa_problem(NULL, "Unexpected XImage format in XMesaBindTexImage");
-         return;
-      }
-      if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_RGBA_EXT) {
-         intFormat = GL_RGBA;
-      }
-      else if (drawable->TextureFormat == GLX_TEXTURE_FORMAT_RGB_EXT) {
-         intFormat = GL_RGB;
-      }
-
-      _mesa_TexImage2D(GL_TEXTURE_2D, 0, intFormat, rb->Width, rb->Height, 0,
-                       format, type, img->data);
-
-      if (freeImg) {
-	 XMesaDestroyImage(img);
-      }
-   }
 }
 
 
@@ -2390,10 +1341,5 @@ XMesaBindTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer,
 PUBLIC void
 XMesaReleaseTexImage(XMesaDisplay *dpy, XMesaBuffer drawable, int buffer)
 {
-   const GLint b = xbuffer_to_renderbuffer(buffer);
-   if (b < 0)
-      return;
-
-   /* no-op for now */
 }
 
diff --git a/src/mesa/pipe/xlib/xm_buffer.c b/src/mesa/pipe/xlib/xm_buffer.c
index 6fc2f4ba630..e49eafbb092 100644
--- a/src/mesa/pipe/xlib/xm_buffer.c
+++ b/src/mesa/pipe/xlib/xm_buffer.c
@@ -41,7 +41,6 @@
 #include "state_tracker/st_context.h"
 
 
-#if defined(USE_XSHM) && !defined(XFree86Server)
 static volatile int mesaXErrorFlag = 0;
 
 /**
@@ -458,8 +457,8 @@ xmesa_delete_framebuffer(struct gl_framebuffer *fb)
       if (!xmesa_find_buffer(b->display, b->cmap, b)) {
 #ifdef XFree86Server
          int client = 0;
-         if (b->frontxrb->drawable)
-            client = CLIENT_ID(b->frontxrb->drawable->id);
+         if (b->drawable)
+            client = CLIENT_ID(b->drawable->id);
          (void)FreeColors(b->cmap, client,
                           b->num_alloced, b->alloced_colors, 0);
 #else
@@ -478,21 +477,6 @@ xmesa_delete_framebuffer(struct gl_framebuffer *fb)
 
    if (fb->Visual.doubleBufferMode) {
       /* free back ximage/pixmap/shmregion */
-      if (b->backxrb->ximage) {
-#if defined(USE_XSHM) && !defined(XFree86Server)
-         if (b->shm) {
-            XShmDetach( b->display, &b->shminfo );
-            XDestroyImage( b->backxrb->ximage );
-            shmdt( b->shminfo.shmaddr );
-         }
-         else
-#endif
-            XMesaDestroyImage( b->backxrb->ximage );
-         b->backxrb->ximage = NULL;
-      }
-      if (b->backxrb->pixmap) {
-         XMesaFreePixmap( b->display, b->backxrb->pixmap );
-      }
    }
 
    if (b->rowimage) {
diff --git a/src/mesa/pipe/xlib/xm_surface.c b/src/mesa/pipe/xlib/xm_surface.c
index 4a54b5c7e1a..6f5c7ac6ec1 100644
--- a/src/mesa/pipe/xlib/xm_surface.c
+++ b/src/mesa/pipe/xlib/xm_surface.c
@@ -70,689 +70,6 @@ const int xmesa_kernel1[16] = {
 
 
 
-#define CLIP_TILE \
-   do { \
-      if (x >= ps->width) \
-         return; \
-      if (y >= ps->height) \
-         return; \
-      if (x + w > ps->width) \
-         w = ps->width - x; \
-      if (y + h > ps->height) \
-         h = ps->height -y; \
-   } while(0)
-
-
-
-/*
- * The following functions are used to trap XGetImage() calls which
- * generate BadMatch errors if the drawable isn't mapped.
- */
-
-#ifndef XFree86Server
-static int caught_xgetimage_error = 0;
-static int (*old_xerror_handler)( XMesaDisplay *dpy, XErrorEvent *ev );
-static unsigned long xgetimage_serial;
-
-/*
- * This is the error handler which will be called if XGetImage fails.
- */
-static int xgetimage_error_handler( XMesaDisplay *dpy, XErrorEvent *ev )
-{
-   if (ev->serial==xgetimage_serial && ev->error_code==BadMatch) {
-      /* caught the expected error */
-      caught_xgetimage_error = 0;
-   }
-   else {
-      /* call the original X error handler, if any.  otherwise ignore */
-      if (old_xerror_handler) {
-         (*old_xerror_handler)( dpy, ev );
-      }
-   }
-   return 0;
-}
-
-
-/*
- * Call this right before XGetImage to setup error trap.
- */
-static void catch_xgetimage_errors( XMesaDisplay *dpy )
-{
-   xgetimage_serial = NextRequest( dpy );
-   old_xerror_handler = XSetErrorHandler( xgetimage_error_handler );
-   caught_xgetimage_error = 0;
-}
-
-
-/*
- * Call this right after XGetImage to check if an error occured.
- */
-static int check_xgetimage_errors( void )
-{
-   /* restore old handler */
-   (void) XSetErrorHandler( old_xerror_handler );
-   /* return 0=no error, 1=error caught */
-   return caught_xgetimage_error;
-}
-#endif
-
-
-/**
- * Wrapper for XGetImage() that catches BadMatch errors that can occur
- * when the window is unmapped or the x/y/w/h extend beyond the window
- * bounds.
- * If build into xserver, wrap the internal GetImage method.
- */
-static XMesaImage *
-xget_image(XMesaDisplay *dpy, Drawable d, int x, int y, uint w, uint h)
-{
-#ifdef XFree86Server
-   uint bpp = 4; /* XXX fix this */
-   XMesaImage *ximage = (XMesaImage *) malloc(sizeof(XMesaImage));
-   if (ximage) {
-      ximage->data = malloc(width * height * bpp);
-   }
-   (*dpy->GetImage)(d, x, y, w, h, ZPixmap, ~0L, (pointer)ximage->data);
-   ximage->width = w;
-   ximage->height = h;
-   ximage->bytes_per_row = w * bpp;
-   return ximage;
-#else
-   int error;
-   XMesaImage *ximage;
-   catch_xgetimage_errors(dpy);
-   ximage = XGetImage(dpy, d, x, y, w, h, AllPlanes, ZPixmap);
-   error = check_xgetimage_errors();
-   return ximage;
-#endif
-}
-
-
-
-/**
- * Return raw pixels from pixmap or XImage.
- */
-void
-xmesa_get_tile(struct pipe_context *pipe, struct pipe_surface *ps,
-               uint x, uint y, uint w, uint h, void *p, int dst_stride)
-{
-   const uint w0 = w;
-   struct xmesa_surface *xms = xmesa_surface(ps);
-   XMesaImage *ximage = NULL;
-   ubyte *dst = (ubyte *) p;
-   uint i;
-
-   if (!xms->drawable && !xms->ximage) {
-      /* not an X surface */
-      softpipe_get_tile(pipe, ps, x, y, w, h, p, dst_stride);
-      return;
-   }
-
-   CLIP_TILE;
-
-   if (!xms->ximage) {
-      /* XImage = pixmap data */
-      assert(xms->drawable);
-      ximage = xget_image(xms->display, xms->drawable, x, y, w, h);
-      if (!ximage)
-         return;
-      x = y = 0;
-   }
-   else {
-      ximage = xms->ximage;
-   }
-
-   /* this could be optimized/simplified */
-   switch (ps->format) {
-   case PIPE_FORMAT_U_A8_R8_G8_B8:
-      if (!dst_stride) {
-         dst_stride = w0 * 4;
-      }
-      for (i = 0; i < h; i++) {
-         memcpy(dst, ximage->data + y * ximage->bytes_per_line + x * 4, 4 * w);
-         dst += dst_stride;
-      }
-      break;
-   case PIPE_FORMAT_U_R5_G6_B5:
-      if (!dst_stride) {
-         dst_stride = w0 * 2;
-      }
-      for (i = 0; i < h; i++) {
-         memcpy(dst, ximage->data + y * ximage->bytes_per_line + x * 2, 4 * 2);
-         dst += dst_stride;
-      }
-      break;
-   default:
-      assert(0);
-   }
-
-   if (!xms->ximage) {
-      XMesaDestroyImage(ximage);
-   }
-}
-
-
-/**
- * Put raw pixels into pixmap or XImage.
- */
-void
-xmesa_put_tile(struct pipe_context *pipe, struct pipe_surface *ps,
-               uint x, uint y, uint w, uint h, const void *p, int src_stride)
-{
-   const uint w0 = w;
-   struct xmesa_surface *xms = xmesa_surface(ps);
-   const ubyte *src = (const ubyte *) p;
-   XMesaImage *ximage;
-
-   if (!xms->drawable && !xms->ximage) {
-      /* not an X surface */
-      softpipe_put_tile(pipe, ps, x, y, w, h, p, src_stride);
-      return;
-   }
-
-   CLIP_TILE;
-
-   if (xms->ximage) {
-      /* put to ximage */
-      ximage = xms->ximage;
-      char *dst;
-      uint i;
-
-      /* this could be optimized/simplified */
-      switch (ps->format) {
-      case PIPE_FORMAT_U_A8_R8_G8_B8:
-         if (!src_stride) {
-            src_stride = w0 * 4;
-         }
-         dst = ximage->data + y * ximage->bytes_per_line + x * 4;
-         for (i = 0; i < h; i++) {
-            memcpy(dst, src, w * 4);
-            dst += ximage->bytes_per_line;
-            src += src_stride;
-         }
-         break;
-      case PIPE_FORMAT_U_R5_G6_B5:
-         if (!src_stride) {
-            src_stride = w0 * 2;
-         }
-         dst = ximage->data + y * ximage->bytes_per_line + x * 2;
-         for (i = 0; i < h; i++) {
-            memcpy(dst, src, w * 2);
-            dst += ximage->bytes_per_line;
-            src += src_stride;
-         }
-         break;
-      default:
-         assert(0);
-      }
-   }
-   else {
-      /* put to pixmap/window */
-      /* Create temp XImage for data */
-#ifdef XFree86Server
-      ximage = XMesaCreateImage(GET_VISUAL_DEPTH(v), w, h, p);
-#else
-      XVisualInfo *visinfo = xms->xrb->Parent->xm_visual->visinfo;
-      ximage = XCreateImage(xms->display,
-                            visinfo->visual,
-                            visinfo->depth,
-                            ZPixmap, 0,   /* format, offset */
-                            (char *) p,   /* data */
-                            w, h,         /* width, height */
-                            32,           /* bitmap_pad */
-                            0);           /* bytes_per_line */
-#endif
-
-      /* send XImage data to pixmap */
-      XPutImage(xms->display, xms->drawable, xms->gc,
-                ximage, 0, 0, x, y, w, h);
-      /* clean-up */
-      ximage->data = NULL; /* prevents freeing user data at 'p' */
-      XMesaDestroyImage(ximage);
-   }
-}
-
-
-void
-xmesa_get_tile_rgba(struct pipe_context *pipe, struct pipe_surface *ps,
-                    uint x, uint y, uint w, uint h, float *pixels)
-{
-   const uint w0 = w;
-   struct xmesa_surface *xms = xmesa_surface(ps);
-   XMesaImage *ximage = NULL;
-   float *pRow = pixels;
-   uint i, j;
-
-   if (!xms->drawable && !xms->ximage) {
-      /* not an X surface */
-      softpipe_get_tile_rgba(pipe, ps, x, y, w, h, pixels);
-      return;
-   }
-
-   CLIP_TILE;
-
-   if (!xms->ximage) {
-      /* XImage = pixmap data */
-      assert(xms->drawable);
-      ximage = xget_image(xms->display, xms->drawable, x, y, w, h);
-      if (!ximage)
-         return;
-      x = y = 0;
-   }
-   else {
-      ximage = xms->ximage;
-   }
-   
-   switch (ps->format) {
-   case PIPE_FORMAT_U_A8_R8_G8_B8:
-      {
-         const uint *src
-            = (uint *) (ximage->data + y * ximage->bytes_per_line + x * 4);
-         for (i = 0; i < h; i++) {
-            float *p = pRow;
-            for (j = 0; j < w; j++) {
-               uint pix = src[j];
-               ubyte r = ((pix >> 16) & 0xff);
-               ubyte g = ((pix >>  8) & 0xff);
-               ubyte b = ( pix        & 0xff);
-               ubyte a = ((pix >> 24) & 0xff);
-               p[0] = UBYTE_TO_FLOAT(r);
-               p[1] = UBYTE_TO_FLOAT(g);
-               p[2] = UBYTE_TO_FLOAT(b);
-               p[3] = UBYTE_TO_FLOAT(a);
-               p += 4;
-            }
-            src += ximage->width;
-            pRow += 4 * w0;
-         }
-      }
-      break;
-   case PIPE_FORMAT_U_B8_G8_R8_A8:
-      {
-         const uint *src
-            = (uint *) (ximage->data + y * ximage->bytes_per_line + x * 4);
-         for (i = 0; i < h; i++) {
-            float *p = pRow;
-            for (j = 0; j < w; j++) {
-               uint pix = src[j];
-               ubyte r = ((pix >>  8) & 0xff);
-               ubyte g = ((pix >> 16) & 0xff);
-               ubyte b = ((pix >> 24) & 0xff);
-               ubyte a = ( pix        & 0xff);
-               p[0] = UBYTE_TO_FLOAT(r);
-               p[1] = UBYTE_TO_FLOAT(g);
-               p[2] = UBYTE_TO_FLOAT(b);
-               p[3] = UBYTE_TO_FLOAT(a);
-               p += 4;
-            }
-            src += ximage->width;
-            pRow += 4 * w0;
-         }
-      }
-      break;
-   case PIPE_FORMAT_U_R5_G6_B5:
-      {
-         ushort *src
-            = (ushort *) (ximage->data + y * ximage->bytes_per_line + x * 2);
-         for (i = 0; i < h; i++) {
-            float *p = pRow;
-            for (j = 0; j < w; j++) {
-               uint pix = src[j];
-               ubyte r = (pix >> 8) | ((pix >> 13) & 0x7);
-               ubyte g = (pix >> 3) | ((pix >>  9) & 0x3);
-               ubyte b = ((pix & 0x1f) << 3) | ((pix >> 2) & 0x3);
-               p[0] = UBYTE_TO_FLOAT(r);
-               p[1] = UBYTE_TO_FLOAT(g);
-               p[2] = UBYTE_TO_FLOAT(b);
-               p[3] = 1.0;
-               p += 4;
-            }
-            src += ximage->width;
-            pRow += 4 * w0;
-         }
-      }
-      break;
-   default:
-      fprintf(stderr, "Bad format in xmesa_get_tile_rgba()\n");
-      assert(0);
-   }
-
-   if (!xms->ximage) {
-      XMesaDestroyImage(ximage);
-   }
-}
-
-
-void
-xmesa_put_tile_rgba(struct pipe_context *pipe, struct pipe_surface *ps,
-                    uint x, uint y, uint w, uint h, const float *pixels)
-{
-   const uint x0 = x, y0 = y, w0 = w;
-   struct xmesa_surface *xms = xmesa_surface(ps);
-   XMesaImage *ximage;
-   uint i, j;
-
-   if (!xms->drawable && !xms->ximage) {
-      /* not an X surface */
-      softpipe_put_tile_rgba(pipe, ps, x, y, w, h, pixels);
-      return;
-   }
-
-   CLIP_TILE;
-
-   if (!xms->ximage) {
-      /* create temp XImage */
-      char *data = (char *) malloc(w * h * 4);
-#ifdef XFree86Server
-      ximage = XMesaCreateImage(GET_VISUAL_DEPTH(v), w, h, data);
-#else
-      XVisualInfo *visinfo = xms->xrb->Parent->xm_visual->visinfo;
-      ximage = XCreateImage(xms->display,
-                            visinfo->visual,
-                            visinfo->depth,
-                            ZPixmap, 0,   /* format, offset */
-                            data,         /* data */
-                            w, h,         /* width, height */
-                            32,           /* bitmap_pad */
-                            0);           /* bytes_per_line */
-#endif
-      x = y = 0;
-   }
-   else {
-      ximage = xms->ximage;
-   }
-
-   /* convert floats to ximage's format */
-   switch (ps->format) {
-   case PIPE_FORMAT_U_A8_R8_G8_B8:
-      {
-         uint *dst
-            = (uint *) (ximage->data + y * ximage->bytes_per_line + x * 4);
-         const float *pRow = pixels;
-         for (i = 0; i < h; i++) {
-            const float *p = pRow;
-            for (j = 0; j < w; j++) {
-               ubyte r, g, b, a;
-               UNCLAMPED_FLOAT_TO_UBYTE(r, p[0]);
-               UNCLAMPED_FLOAT_TO_UBYTE(g, p[1]);
-               UNCLAMPED_FLOAT_TO_UBYTE(b, p[2]);
-               UNCLAMPED_FLOAT_TO_UBYTE(a, p[3]);
-               dst[j] = PACK_8A8R8G8B(r, g, b, a);
-               p += 4;
-            }
-            dst += ximage->width;
-            pRow += 4 * w0;
-         }
-      }
-      break;
-   case PIPE_FORMAT_U_B8_G8_R8_A8:
-      {
-         uint *dst
-            = (uint *) (ximage->data + y * ximage->bytes_per_line + x * 4);
-         const float *pRow = pixels;
-         for (i = 0; i < h; i++) {
-            const float *p = pRow;
-            for (j = 0; j < w; j++) {
-               ubyte r, g, b, a;
-               UNCLAMPED_FLOAT_TO_UBYTE(r, p[0]);
-               UNCLAMPED_FLOAT_TO_UBYTE(g, p[1]);
-               UNCLAMPED_FLOAT_TO_UBYTE(b, p[2]);
-               UNCLAMPED_FLOAT_TO_UBYTE(a, p[3]);
-               dst[j] = PACK_8B8G8R8A(r, g, b, a);
-               p += 4;
-            }
-            dst += ximage->width;
-            pRow += 4 * w0;
-         }
-      }
-      break;
-   case PIPE_FORMAT_U_R5_G6_B5:
-      {
-         ushort *dst =
-            (ushort *) (ximage->data + y * ximage->bytes_per_line + x * 2);
-         const float *pRow = pixels;
-         for (i = 0; i < h; i++) {
-            const float *p = pRow;
-            for (j = 0; j < w; j++) {
-               ubyte r, g, b;
-               UNCLAMPED_FLOAT_TO_UBYTE(r, p[0]);
-               UNCLAMPED_FLOAT_TO_UBYTE(g, p[1]);
-               UNCLAMPED_FLOAT_TO_UBYTE(b, p[2]);
-               dst[j] = PACK_5R6G5B(r, g, b);
-               p += 4;
-            }
-            dst += ximage->width;
-            pRow += 4 * w0;
-         }
-      }
-      break;
-      
-   default:
-      fprintf(stderr, "Bad format in xmesa_put_tile_rgba()\n");
-      assert(0);
-   }
-
-   if (!xms->ximage) {
-      /* send XImage data to pixmap */
-      XPutImage(xms->display, xms->drawable, xms->gc,
-                ximage, 0, 0, x0, y0, w, h);
-      /* clean-up */
-      free(ximage->data);
-      ximage->data = NULL;
-      XMesaDestroyImage(ximage);
-   }
-}
-
-
-static void
-clear_pixmap_surface(struct pipe_context *pipe, struct pipe_surface *ps,
-                     uint value)
-{
-   struct xmesa_surface *xms = xmesa_surface(ps);
-   assert(xms);
-   assert(xms->display);
-   assert(xms->drawable);
-   assert(xms->gc);
-   XMesaSetForeground( xms->display, xms->gc, value );
-   XMesaFillRectangle( xms->display, xms->drawable, xms->gc,
-                       0, 0, ps->width, ps->height);
-}
-
-static void
-clear_nbit_ximage_surface(struct pipe_context *pipe, struct pipe_surface *ps,
-                          uint value)
-{
-   struct xmesa_surface *xms = xmesa_surface(ps);
-   int width = xms->surface.width;
-   int height = xms->surface.height;
-   int i, j;
-   for (j = 0; j < height; j++) {
-      for (i = 0; i < width; i++) {
-         XMesaPutPixel(xms->ximage, i, j, value);
-      }
-   }
-}
-
-static void
-clear_8bit_ximage_surface(struct pipe_context *pipe, struct pipe_surface *ps,
-                          uint value)
-{
-   struct xmesa_surface *xms = xmesa_surface(ps);
-   memset(xms->ximage->data,
-          value,
-          xms->ximage->bytes_per_line * xms->ximage->height);
-}
-
-static void
-clear_16bit_ximage_surface(struct pipe_context *pipe, struct pipe_surface *ps,
-                           uint value)
-{
-   struct xmesa_surface *xms = xmesa_surface(ps);
-   const int n = xms->ximage->width * xms->ximage->height;
-   ushort *dst = (ushort *) xms->ximage->data;
-   int i;
-   for (i = 0; i < n; i++) {
-      dst[i] = value;
-   }
-}
-
-
-/* Optimized code provided by Nozomi Ytow <[email protected]> */
-static void
-clear_24bit_ximage_surface(struct pipe_context *pipe, struct pipe_surface *ps,
-                           uint value)
-{
-   struct xmesa_surface *xms = xmesa_surface(ps);
-   const ubyte r = (value      ) & 0xff;
-   const ubyte g = (value >>  8) & 0xff;
-   const ubyte b = (value >> 16) & 0xff;
-
-   if (r == g && g == b) {
-      /* same value for all three components (gray) */
-      memset(xms->ximage->data, r,
-             xms->ximage->bytes_per_line * xms->ximage->height);
-   }
-   else {
-      /* non-gray clear color */
-      const int n = xms->ximage->width * xms->ximage->height;
-      int i;
-      bgr_t *ptr3 = (bgr_t *) xms->ximage->data;
-      for (i = 0; i < n; i++) {
-         ptr3->r = r;
-         ptr3->g = g;
-         ptr3->b = b;
-         ptr3++;
-      }
-   }
-}
-
-static void
-clear_32bit_ximage_surface(struct pipe_context *pipe, struct pipe_surface *ps,
-                           uint value)
-{
-   struct xmesa_surface *xms = xmesa_surface(ps);
-
-   if (value == 0) {
-      /* common case */
-      memset(xms->ximage->data, value,
-             xms->ximage->bytes_per_line * xms->ximage->height);
-   }
-   else {
-      const int n = xms->ximage->width * xms->ximage->height;
-      uint *dst = (uint *) xms->ximage->data;
-      int i;
-      for (i = 0; i < n; i++)
-         dst[i] = value;
-   }
-}
-
-
-
-
-/**
- * Called to create a pipe_surface for each X renderbuffer.
- * Note: this is being used instead of pipe->surface_alloc() since we
- * have special/unique quad read/write functions for X.
- */
-struct pipe_surface *
-xmesa_new_color_surface(struct pipe_winsys *winsys, GLuint pipeFormat)
-{
-   struct xmesa_surface *xms = CALLOC_STRUCT(xmesa_surface);
-
-   assert(pipeFormat);
-
-   xms->surface.format = pipeFormat;
-   xms->surface.refcount = 1;
-   xms->surface.winsys = winsys;
-
-   /* Note, the buffer we allocate doesn't actually have any storage
-    * since we're drawing into an XImage or Pixmap.
-    * The surface's size will get set in the xmesa_alloc_front/back_storage()
-    * functions.
-    */
-   xms->surface.buffer = winsys->buffer_create(winsys, 0x0);
-
-   return &xms->surface;
-}
-
-
-/**
- * Called via pipe->surface_alloc() to create new surfaces (textures,
- * renderbuffers, etc.
- */
-struct pipe_surface *
-xmesa_surface_alloc(struct pipe_context *pipe, GLuint pipeFormat)
-{
-   struct xmesa_surface *xms = CALLOC_STRUCT(xmesa_surface);
-
-   assert(pipe);
-   assert(pipeFormat);
-
-   xms->surface.format = pipeFormat;
-   xms->surface.refcount = 1;
-   xms->surface.winsys = pipe->winsys;
-
-   return &xms->surface;
-}
-
-
-/**
- * Called via pipe->clear() to clear entire surface to a certain value.
- * If the surface is not an X pixmap or XImage, pass the call to
- * softpipe_clear().
- */
-void
-xmesa_clear(struct pipe_context *pipe, struct pipe_surface *ps, uint value)
-{
-   struct xmesa_surface *xms = xmesa_surface(ps);
-
-   /* XXX actually, we should just discard any cached tiles from this
-    * surface since we don't want to accidentally re-use them after clearing.
-    */
-   pipe->flush(pipe, 0);
-
-   {
-      struct softpipe_context *sp = softpipe_context(pipe);
-      if (ps == sp_tile_cache_get_surface(sp, sp->cbuf_cache[0])) {
-         float clear[4];
-         clear[0] = 0.2; /* XXX hack */
-         clear[1] = 0.2;
-         clear[2] = 0.2;
-         clear[3] = 0.2;
-         sp_tile_cache_clear(sp->cbuf_cache[0], clear);
-      }
-   }
-
-#if 1
-   (void) clear_8bit_ximage_surface;
-   (void) clear_24bit_ximage_surface;
-#endif
-
-   if (xms->ximage) {
-      /* back color buffer */
-      switch (xms->surface.format) {
-      case PIPE_FORMAT_U_R5_G6_B5:
-         clear_16bit_ximage_surface(pipe, ps, value);
-         break;
-      case PIPE_FORMAT_U_A8_R8_G8_B8:
-      case PIPE_FORMAT_U_B8_G8_R8_A8:
-         clear_32bit_ximage_surface(pipe, ps, value);
-         break;
-      default:
-         clear_nbit_ximage_surface(pipe, ps, value);
-         break;
-      }
-   }
-   else if (xms->drawable) {
-      /* front color buffer */
-      clear_pixmap_surface(pipe, ps, value);
-   }
-   else {
-      /* other kind of buffer */
-      softpipe_clear(pipe, ps, value);
-   }
-}
-
 
 /** XXX unfinished sketch... */
 struct pipe_surface *
diff --git a/src/mesa/pipe/xlib/xm_winsys.c b/src/mesa/pipe/xlib/xm_winsys.c
index 295174d4bba..b9dd3e3b6ee 100644
--- a/src/mesa/pipe/xlib/xm_winsys.c
+++ b/src/mesa/pipe/xlib/xm_winsys.c
@@ -38,6 +38,8 @@
 #include "main/macros.h"
 
 #include "pipe/p_winsys.h"
+#include "pipe/p_format.h"
+#include "pipe/p_context.h"
 #include "pipe/softpipe/sp_winsys.h"
 
 
@@ -54,17 +56,52 @@ struct xm_buffer
 };
 
 
+struct xmesa_surface
+{
+   struct pipe_surface surface;
+   /* no extra fields for now */
+};
+
+
+/**
+ * Derived from softpipe_winsys.
+ * We just need one extra field which indicates the pixel format to use for
+ * drawing surfaces so that we're compatible with the XVisual/window format.
+ */
+struct xmesa_softpipe_winsys
+{
+   struct softpipe_winsys spws;
+   uint pixelformat;
+};
+
+
 
-/* Turn the softpipe opaque buffer pointer into a dri_bufmgr opaque
+/** Cast wrapper */
+static INLINE struct xmesa_surface *
+xmesa_surface(struct pipe_surface *ps)
+{
+   assert(0);
+   return (struct xmesa_surface *) ps;
+}
+
+/** cast wrapper */
+static INLINE struct xmesa_softpipe_winsys *
+xmesa_softpipe_winsys(struct softpipe_winsys *spws)
+{
+   return (struct xmesa_softpipe_winsys *) spws;
+}
+
+/**
+ * Turn the softpipe opaque buffer pointer into a dri_bufmgr opaque
  * buffer pointer...
  */
-static inline struct xm_buffer *
+static INLINE struct xm_buffer *
 xm_bo( struct pipe_buffer_handle *bo )
 {
    return (struct xm_buffer *) bo;
 }
 
-static inline struct pipe_buffer_handle *
+static INLINE struct pipe_buffer_handle *
 pipe_bo( struct xm_buffer *bo )
 {
    return (struct pipe_buffer_handle *) bo;
@@ -156,6 +193,33 @@ xm_buffer_get_subdata(struct pipe_winsys *pws, struct pipe_buffer_handle *buf,
    memcpy(data, b + offset, size);
 }
 
+
+/**
+ * Display/copy the image in the surface into the X window specified
+ * by the XMesaBuffer.
+ */
+void
+xmesa_display_surface(XMesaBuffer b, const struct pipe_surface *surf)
+{
+   XImage *ximage = b->tempImage;
+   struct xm_buffer *xm_buf = xm_bo(surf->buffer);
+
+   /* check that the XImage has been previously initialized */
+   assert(ximage->format);
+   assert(ximage->bitmap_unit);
+
+   /* update XImage's fields */
+   ximage->width = surf->width;
+   ximage->height = surf->height;
+   ximage->bytes_per_line = surf->pitch * (ximage->bits_per_pixel / 8);
+   ximage->data = xm_buf->data;
+
+   /* display image in Window */
+   XPutImage(b->xm_visual->display, b->drawable, b->gc,
+             ximage, 0, 0, 0, 0, surf->width, surf->height);
+}
+
+
 static void
 xm_flush_frontbuffer(struct pipe_winsys *pws,
                      struct pipe_surface *surf,
@@ -166,9 +230,13 @@ xm_flush_frontbuffer(struct pipe_winsys *pws,
     * If we instead did front buffer rendering to a temporary XImage,
     * this would be the place to copy the Ximage to the on-screen Window.
     */
+   XMesaContext xmctx = (XMesaContext) context_private;
+
+   xmesa_display_surface(xmctx->xm_buffer, surf);
 }
 
 
+
 static void
 xm_printf(struct pipe_winsys *pws, const char *fmtString, ...)
 {
@@ -178,6 +246,7 @@ xm_printf(struct pipe_winsys *pws, const char *fmtString, ...)
    va_end( args );
 }
 
+
 static const char *
 xm_get_name(struct pipe_winsys *pws)
 {
@@ -219,7 +288,6 @@ round_up(unsigned n, unsigned multiple)
    return (n + multiple - 1) & ~(multiple - 1);
 }
 
-
 static unsigned
 xm_surface_pitch(struct pipe_winsys *winsys, unsigned cpp, unsigned width,
 		 unsigned flags)
@@ -243,12 +311,7 @@ xm_surface_alloc(struct pipe_winsys *ws, GLuint pipeFormat)
    xms->surface.format = pipeFormat;
    xms->surface.refcount = 1;
    xms->surface.winsys = ws;
-#if 0
-   /*
-    * This is really just a softpipe surface, not an XImage/Pixmap surface.
-    */
-   softpipe_init_surface_funcs(&xms->surface);
-#endif
+
    return &xms->surface;
 }
 
@@ -261,7 +324,7 @@ xm_surface_release(struct pipe_winsys *winsys, struct pipe_surface **s)
    surf->refcount--;
    if (surf->refcount == 0) {
       if (surf->buffer)
-	 winsys->buffer_reference(winsys, &surf->buffer, NULL);
+	winsys->buffer_reference(winsys, &surf->buffer, NULL);
       free(surf);
    }
    *s = NULL;
@@ -274,7 +337,7 @@ xm_surface_release(struct pipe_winsys *winsys, struct pipe_surface **s)
  * For Xlib, this is a singleton object.
  * Nothing special for the Xlib driver so no subclassing or anything.
  */
-struct pipe_winsys *
+static struct pipe_winsys *
 xmesa_get_pipe_winsys(void)
 {
    static struct pipe_winsys *ws = NULL;
@@ -308,59 +371,65 @@ xmesa_get_pipe_winsys(void)
 
 
 /**
- * XXX this depends on the depths supported by the screen (8/16/32/etc).
- * Maybe when we're about to create a context/drawable we create a new
- * softpipe_winsys object that corresponds to the specified screen...
+ * The winsys being queried will have been created at glXCreateContext
+ * time, with a pixel format corresponding to the context's visual.
  *
- * Also, this query only really matters for on-screen drawables.
- * For textures and FBOs we (softpipe) can support any format.o
+ * XXX we should pass a flag indicating if the format is going to be
+ * use for a drawing surface vs. a texture.  In the later case, we
+ * can support any format.
  */
 static boolean
 xmesa_is_format_supported(struct softpipe_winsys *sws, uint format)
 {
-   /* Any format supported by softpipe can be listed here.
-    * This query is not used for allocating window-system color buffers
-    * (which would depend on the screen depth/bpp).
-    */
-   switch (format) {
-   case PIPE_FORMAT_U_A8_R8_G8_B8:
-   case PIPE_FORMAT_S_R16_G16_B16_A16:
-   case PIPE_FORMAT_S8_Z24:
-   case PIPE_FORMAT_U_S8:
-   case PIPE_FORMAT_U_Z16:
-   case PIPE_FORMAT_U_Z32:
+   struct xmesa_softpipe_winsys *xmws = xmesa_softpipe_winsys(sws);
+
+   if (format == xmws->pixelformat) {
       return TRUE;
-   default:
-      return FALSE;
-   };
+   }
+   else {
+      /* non-color / window surface format */
+      switch (format) {
+      case PIPE_FORMAT_S_R16_G16_B16_A16:
+      case PIPE_FORMAT_S8_Z24:
+      case PIPE_FORMAT_U_S8:
+      case PIPE_FORMAT_U_Z16:
+      case PIPE_FORMAT_U_Z32:
+         return TRUE;
+      default:
+         return FALSE;
+      };
+   }
 }
 
 
 /**
  * Return pointer to a softpipe_winsys object.
- * For Xlib, this is a singleton object.
  */
 static struct softpipe_winsys *
-xmesa_get_softpipe_winsys(void)
+xmesa_get_softpipe_winsys(uint pixelformat)
 {
-   static struct softpipe_winsys *spws = NULL;
+   struct xmesa_softpipe_winsys *xmws
+      = CALLOC_STRUCT(xmesa_softpipe_winsys);
+   if (!xmws)
+      return NULL;
 
-   if (!spws) {
-      spws = CALLOC_STRUCT(softpipe_winsys);
-      if (spws) {
-         spws->is_format_supported = xmesa_is_format_supported;
-      }
-   }
+   xmws->spws.is_format_supported = xmesa_is_format_supported;
+   xmws->pixelformat = pixelformat;
 
-   return spws;
+   return &xmws->spws;
 }
 
 
 struct pipe_context *
-xmesa_create_context(XMesaContext xmesa)
+xmesa_create_pipe_context(XMesaContext xmesa, uint pixelformat)
 {
    struct pipe_winsys *pws = xmesa_get_pipe_winsys();
-   struct softpipe_winsys *spws = xmesa_get_softpipe_winsys();
+   struct softpipe_winsys *spws = xmesa_get_softpipe_winsys(pixelformat);
+   struct pipe_context *pipe;
    
-   return softpipe_create( pws, spws );
+   pipe = softpipe_create( pws, spws );
+   if (pipe)
+      pipe->priv = xmesa;
+
+   return pipe;
 }
diff --git a/src/mesa/pipe/xlib/xmesaP.h b/src/mesa/pipe/xlib/xmesaP.h
index a067dfd3e34..e8c2a597a69 100644
--- a/src/mesa/pipe/xlib/xmesaP.h
+++ b/src/mesa/pipe/xlib/xmesaP.h
@@ -32,42 +32,15 @@
 #ifdef XFree86Server
 #include "xm_image.h"
 #endif
-#include "state_tracker/st_cb_fbo.h"
+
 #include "state_tracker/st_context.h"
 #include "state_tracker/st_public.h"
-#include "pipe/softpipe/sp_context.h"
-#include "pipe/softpipe/sp_surface.h"
 
 
 extern _glthread_Mutex _xmesa_lock;
 
 extern XMesaBuffer XMesaBufferList;
 
-/* for PF_8R8G8B24 pixel format */
-typedef struct {
-   GLubyte b;
-   GLubyte g;
-   GLubyte r;
-} bgr_t;
-
-
-/** Framebuffer pixel formats */
-enum pixel_format {
-   PF_Index,		/**< Color Index mode */
-   PF_Truecolor,	/**< TrueColor or DirectColor, any depth */
-   PF_Dither_True,	/**< TrueColor with dithering */
-   PF_8A8R8G8B,		/**< 32-bit TrueColor:  8-A, 8-R, 8-G, 8-B bits */
-   PF_8A8B8G8R,		/**< 32-bit TrueColor:  8-A, 8-B, 8-G, 8-R bits */
-   PF_8R8G8B,		/**< 32-bit TrueColor:  8-R, 8-G, 8-B bits */
-   PF_8R8G8B24,		/**< 24-bit TrueColor:  8-R, 8-G, 8-B bits */
-   PF_5R6G5B,		/**< 16-bit TrueColor:  5-R, 6-G, 5-B bits */
-   PF_Dither,		/**< Color-mapped RGB with dither */
-   PF_Lookup,		/**< Color-mapped RGB without dither */
-   PF_1Bit,		/**< monochrome dithering of RGB */
-   PF_Grayscale,	/**< Grayscale or StaticGray */
-   PF_Dither_5R6G5B	/**< 16-bit dithered TrueColor: 5-R, 6-G, 5-B */
-};
-
 
 /**
  * Visual inforation, derived from GLvisual.
@@ -86,47 +59,17 @@ struct xmesa_visual {
    GLint BitsPerPixel;		/* True bits per pixel for XImages */
 
    GLboolean ximage_flag;	/* Use XImage for back buffer (not pixmap)? */
-
-   enum pixel_format dithered_pf;  /* Pixel format when dithering */
-   enum pixel_format undithered_pf;/* Pixel format when not dithering */
-
-   GLfloat RedGamma;		/* Gamma values, 1.0 is default */
-   GLfloat GreenGamma;
-   GLfloat BlueGamma;
-
-   /* For PF_TRUECOLOR */
-   GLint rshift, gshift, bshift;/* Pixel color component shifts */
-   GLubyte Kernel[16];		/* Dither kernel */
-   unsigned long RtoPixel[512];	/* RGB to pixel conversion */
-   unsigned long GtoPixel[512];
-   unsigned long BtoPixel[512];
-   GLubyte PixelToR[256];	/* Pixel to RGB conversion */
-   GLubyte PixelToG[256];
-   GLubyte PixelToB[256];
-
-   /* For PF_1BIT */
-   int bitFlip;
 };
 
 
 /**
- * Context info, derived from GLcontext.
+ * Context info, derived from st_context.
  * Basically corresponds to a GLXContext.
  */
 struct xmesa_context {
    struct st_context *st;
-
-   XMesaVisual xm_visual;	/* Describes the buffers */
-   XMesaBuffer xm_buffer;	/* current span/point/line/triangle buffer */
-
-   XMesaDisplay *display;	/* == xm_visual->display */
-   GLboolean swapbytes;		/* Host byte order != display byte order? */
-   GLboolean direct;		/* Direct rendering context? */
-
-   enum pixel_format pixelformat;
-
-   GLubyte clearcolor[4];		/* current clearing color */
-   unsigned long clearpixel;		/* current clearing pixel value */
+   XMesaVisual xm_visual;	/** pixel format info */
+   XMesaBuffer xm_buffer;	/** current drawbuffer */
 };
 
 
@@ -141,46 +84,6 @@ typedef enum {
 } BufferType;
 
 
-/** Values for db_mode: */
-/*@{*/
-#define BACK_PIXMAP	1
-#define BACK_XIMAGE	2
-/*@}*/
-
-
-/**
- * An xmesa_renderbuffer represents the back or front color buffer.
- * For the front color buffer:
- *    <drawable> is the X window
- * For the back color buffer:
- *    Either <ximage> or <pixmap> will be used, never both.
- * In any case, <drawable> always equals <pixmap>.
- * For stand-alone Mesa, we could merge <drawable> and <pixmap> into one
- * field.  We don't do that for the server-side GLcore module because
- * pixmaps and drawables are different and we'd need a bunch of casts.
- */
-struct xmesa_renderbuffer
-{
-   struct st_renderbuffer St; /**< Base class (XXX temporary?) */
-
-   XMesaBuffer Parent;  /**< The XMesaBuffer this renderbuffer belongs to */
-   XMesaDrawable drawable;	/* Usually the X window ID */
-   XMesaPixmap pixmap;	/* Back color buffer */
-   XMesaImage *ximage;	/* The back buffer, if not using a Pixmap */
-
-   GLubyte *origin1;	/* used for PIXEL_ADDR1 macro */
-   GLint width1;
-   GLushort *origin2;	/* used for PIXEL_ADDR2 macro */
-   GLint width2;
-   GLubyte *origin3;	/* used for PIXEL_ADDR3 macro */
-   GLint width3;
-   GLuint *origin4;	/* used for PIXEL_ADDR4 macro */
-   GLint width4;
-
-   GLint bottom;	/* used for FLIP macro, equals height - 1 */
-};
-
-
 /**
  * Framebuffer information, derived from.
  * Basically corresponds to a GLXDrawable.
@@ -190,22 +93,13 @@ struct xmesa_buffer {
 
    GLboolean wasCurrent;	/* was ever the current buffer? */
    XMesaVisual xm_visual;	/* the X/Mesa visual */
-
-   XMesaDisplay *display;
-   BufferType type;             /* window, pixmap, pbuffer or glxwindow */
-
-   struct xmesa_renderbuffer *frontxrb; /* front color renderbuffer */
-   struct xmesa_renderbuffer *backxrb;  /* back color renderbuffer */
-
+   XMesaDrawable drawable;	/* Usually the X window ID */
    XMesaColormap cmap;		/* the X colormap */
+   BufferType type;             /* window, pixmap, pbuffer or glxwindow */
 
+   XMesaImage *tempImage;
    unsigned long selectedEvents;/* for pbuffers only */
 
-   GLint db_mode;		/* 0 = single buffered */
-				/* BACK_PIXMAP = use Pixmap for back buffer */
-				/* BACK_XIMAGE = use XImage for back buffer */
-   GLboolean swAlpha;
-
    GLuint shm;			/* X Shared Memory extension status:	*/
 				/*    0 = not available			*/
 				/*    1 = XImage support available	*/
@@ -214,33 +108,7 @@ struct xmesa_buffer {
    XShmSegmentInfo shminfo;
 #endif
 
-   XMesaImage *rowimage;	/* Used for optimized span writing */
-   XMesaPixmap stipple_pixmap;	/* For polygon stippling */
-   XMesaGC stipple_gc;		/* For polygon stippling */
-
    XMesaGC gc;			/* scratch GC for span, line, tri drawing */
-   XMesaGC cleargc;		/* GC for clearing the color buffer */
-   XMesaGC swapgc;		/* GC for swapping the color buffers */
-
-   /* The following are here instead of in the XMesaVisual
-    * because they depend on the window's colormap.
-    */
-
-   /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
-   unsigned long color_table[576];	/* RGB -> pixel value */
-
-   /* For PF_DITHER, PF_LOOKUP, PF_GRAYSCALE */
-   GLubyte pixel_to_r[65536];		/* pixel value -> red */
-   GLubyte pixel_to_g[65536];		/* pixel value -> green */
-   GLubyte pixel_to_b[65536];		/* pixel value -> blue */
-
-   /* Used to do XAllocColor/XFreeColors accounting: */
-   int num_alloced;
-#if defined(XFree86Server)
-   Pixel alloced_colors[256];
-#else
-   unsigned long alloced_colors[256];
-#endif
 
    /* GLX_EXT_texture_from_pixmap */
    GLint TextureTarget; /** GLX_TEXTURE_1D_EXT, for example */
@@ -251,325 +119,38 @@ struct xmesa_buffer {
 };
 
 
-/**
- * If pixelformat==PF_TRUECOLOR:
- */
-#define PACK_TRUECOLOR( PIXEL, R, G, B )	\
-   PIXEL = xmesa->xm_visual->RtoPixel[R]	\
-         | xmesa->xm_visual->GtoPixel[G]	\
-         | xmesa->xm_visual->BtoPixel[B];	\
-
-
-/**
- * If pixelformat==PF_TRUEDITHER:
- */
-#define PACK_TRUEDITHER( PIXEL, X, Y, R, G, B )			\
-{								\
-   int d = xmesa->xm_visual->Kernel[((X)&3) | (((Y)&3)<<2)];	\
-   PIXEL = xmesa->xm_visual->RtoPixel[(R)+d]			\
-         | xmesa->xm_visual->GtoPixel[(G)+d]			\
-         | xmesa->xm_visual->BtoPixel[(B)+d];			\
-}
-
-
-
-/**
- * If pixelformat==PF_8A8B8G8R:
- */
-#define PACK_8A8B8G8R( R, G, B, A )	\
-	( ((A) << 24) | ((B) << 16) | ((G) << 8) | (R) )
 
-
-/**
- * Like PACK_8A8B8G8R() but don't use alpha.  This is usually an acceptable
- * shortcut.
- */
-#define PACK_8B8G8R( R, G, B )   ( ((B) << 16) | ((G) << 8) | (R) )
-
-#define PACK_8B8G8R8A( R, G, B, A ) \
-        ( ((B) << 24) | ((G) << 16) | ((R) << 8) | (A) )
-
-
-
-
-/**
- * If pixelformat==PF_8R8G8B:
- */
-#define PACK_8R8G8B( R, G, B)	 ( ((R) << 16) | ((G) << 8) | (B) )
-
-
-/**
- * If pixelformat==PF_5R6G5B:
- */
-#define PACK_5R6G5B( R, G, B)	 ( (((R) & 0xf8) << 8) | (((G) & 0xfc) << 3) | ((B) >> 3) )
-
-
-/**
- * If pixelformat==PF_8A8R8G8B:
- */
-#define PACK_8A8R8G8B( R, G, B, A )	\
-	( ((A) << 24) | ((R) << 16) | ((G) << 8) | (B) )
-
-
-
-/**
- * If pixelformat==PF_DITHER:
- *
- * Improved 8-bit RGB dithering code contributed by Bob Mercier
- * ([email protected]).  Thanks Bob!
- */
-#ifdef DITHER666
-# define DITH_R   6
-# define DITH_G   6
-# define DITH_B   6
-# define DITH_MIX(r,g,b)  (((r) * DITH_G + (g)) * DITH_B + (b))
-#else
-# define DITH_R	5
-# define DITH_G	9
-# define DITH_B	5
-# define DITH_MIX(r,g,b)  (((g) << 6) | ((b) << 3) | (r))
-#endif
-#define DITH_DX	4
-#define DITH_DY	4
-#define DITH_N	(DITH_DX * DITH_DY)
-
-#define _dither(C, c, d)   (((unsigned)((DITH_N * (C - 1) + 1) * c + d)) >> 12)
-
-#define MAXC	256
-extern const int xmesa_kernel8[DITH_DY * DITH_DX];
-
-/* Dither for random X,Y */
-#define DITHER_SETUP						\
-	int __d;						\
-	unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table;
-
-#define DITHER( X, Y, R, G, B )				\
-	(__d = xmesa_kernel8[(((Y)&3)<<2) | ((X)&3)],	\
-	 ctable[DITH_MIX(_dither(DITH_R, (R), __d),	\
-		         _dither(DITH_G, (G), __d),	\
-		         _dither(DITH_B, (B), __d))])
-
-/* Dither for random X, fixed Y */
-#define XDITHER_SETUP(Y)					\
-	int __d;						\
-	unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table;	\
-	const int *kernel = &xmesa_kernel8[ ((Y)&3) << 2 ];
-
-#define XDITHER( X, R, G, B )				\
-	(__d = kernel[(X)&3],				\
-	ctable[DITH_MIX(_dither(DITH_R, (R), __d),	\
-		        _dither(DITH_G, (G), __d),	\
-		        _dither(DITH_B, (B), __d))])
-
-
-
-/*
- * Dithering for flat-shaded triangles.  Precompute all 16 possible
- * pixel values given the triangle's RGB color.  Contributed by Martin Shenk.
- */
-#define FLAT_DITHER_SETUP( R, G, B )					\
-	GLushort ditherValues[16];					\
-	{								\
-	   unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table;	\
-	   int msdr = (DITH_N*((DITH_R)-1)+1) * (R);			\
-	   int msdg = (DITH_N*((DITH_G)-1)+1) * (G);			\
-	   int msdb = (DITH_N*((DITH_B)-1)+1) * (B);			\
-	   int i;							\
-	   for (i=0;i<16;i++) {						\
-	      int k = xmesa_kernel8[i];					\
-	      int j = DITH_MIX( (msdr+k)>>12, (msdg+k)>>12, (msdb+k)>>12 );\
-	      ditherValues[i] = (GLushort) ctable[j];			\
-	   }								\
-        }
-
-#define FLAT_DITHER_ROW_SETUP(Y)					\
-	GLushort *ditherRow = ditherValues + ( ((Y)&3) << 2);
-
-#define FLAT_DITHER(X)  ditherRow[(X)&3]
-
-
-
-/**
- * If pixelformat==PF_LOOKUP:
- */
-#define _dither_lookup(C, c)   (((unsigned)((DITH_N * (C - 1) + 1) * c)) >> 12)
-
-#define LOOKUP_SETUP						\
-	unsigned long *ctable = XMESA_BUFFER(ctx->DrawBuffer)->color_table
-
-#define LOOKUP( R, G, B )				\
-	ctable[DITH_MIX(_dither_lookup(DITH_R, (R)),	\
-		        _dither_lookup(DITH_G, (G)),	\
-		        _dither_lookup(DITH_B, (B)))]
-
-
-
-/**
- * If pixelformat==PF_1BIT:
- */
-extern const int xmesa_kernel1[16];
-
-#define SETUP_1BIT  int bitFlip = xmesa->xm_visual->bitFlip
-#define DITHER_1BIT( X, Y, R, G, B )	\
-	(( ((int)(R)+(int)(G)+(int)(B)) > xmesa_kernel1[(((Y)&3) << 2) | ((X)&3)] ) ^ bitFlip)
-
-
-
-/**
- * If pixelformat==PF_GRAYSCALE:
- */
-#define GRAY_RGB( R, G, B )   XMESA_BUFFER(ctx->DrawBuffer)->color_table[((R) + (G) + (B))/3]
-
-
-
-/**
- * Converts a GL window Y coord to an X window Y coord:
- */
-#define YFLIP(XRB, Y)  ((XRB)->bottom - (Y))
-
-
-/**
- * Return the address of a 1, 2 or 4-byte pixel in the buffer's XImage:
- * X==0 is left, Y==0 is bottom.
- */
-#define PIXEL_ADDR1(XRB, X, Y)  \
-   ( (XRB)->origin1 - (Y) * (XRB)->width1 + (X) )
-
-#define PIXEL_ADDR2(XRB, X, Y)  \
-   ( (XRB)->origin2 - (Y) * (XRB)->width2 + (X) )
-
-#define PIXEL_ADDR3(XRB, X, Y)  \
-   ( (bgr_t *) ( (XRB)->origin3 - (Y) * (XRB)->width3 + 3 * (X) ))
-
-#define PIXEL_ADDR4(XRB, X, Y)  \
-   ( (XRB)->origin4 - (Y) * (XRB)->width4 + (X) )
-
-
-
-/*
- * External functions:
- */
-
-extern struct xmesa_renderbuffer *
-xmesa_create_renderbuffer(struct pipe_winsys *winsys,
-                          GLuint name, XMesaVisual xmvis,
-                          GLboolean backBuffer);
-
-extern void
-xmesa_delete_framebuffer(struct gl_framebuffer *fb);
-
-extern XMesaBuffer
-xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis);
-
-extern unsigned long
-xmesa_color_to_pixel( XMesaContext xmesa,
-                      GLubyte r, GLubyte g, GLubyte b, GLubyte a,
-                      GLuint pixelFormat );
-
-extern void
-xmesa_get_window_size(XMesaDisplay *dpy, XMesaBuffer b,
-                      GLuint *width, GLuint *height);
-
-extern void
-xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer);
-
-
-extern void
-xmesa_destroy_buffers_on_display(XMesaDisplay *dpy);
-
-
-/**
- * Using a function instead of an ordinary cast is safer.
- */
-static INLINE struct xmesa_renderbuffer *
-xmesa_renderbuffer(struct gl_renderbuffer *rb)
-{
-   return (struct xmesa_renderbuffer *) rb;
-}
-
-
-/**
- * Return pointer to XMesaContext corresponding to a Mesa GLcontext.
- * Since we're using structure containment, it's just a cast!.
- * XXX should use inlined function for better type safety.
- */
+/** cast wrapper */
 static INLINE XMesaContext
-XMESA_CONTEXT(GLcontext *ctx)
+xmesa_context(GLcontext *ctx)
 {
    return (XMesaContext) ctx->DriverCtx;
 }
 
 
-/**
- * Return pointer to XMesaBuffer corresponding to a Mesa GLframebuffer.
- * Since we're using structure containment, it's just a cast!.
- * XXX should use inlined function for better type safety.
- */
+/** cast wrapper */
 static INLINE XMesaBuffer
-XMESA_BUFFER(GLframebuffer *fb)
+xmesa_buffer(GLframebuffer *fb)
 {
    struct st_framebuffer *stfb = (struct st_framebuffer *) fb;
    return (XMesaBuffer) st_framebuffer_private(stfb);
 }
 
 
-
-struct pipe_context;
-
-struct xmesa_surface
-{
-   struct pipe_surface surface;
-   struct xmesa_renderbuffer *xrb;
-   XMesaDisplay *display;
-   BufferType type;
-   XMesaDrawable drawable;
-   XMesaImage *ximage;
-   XMesaGC gc;
-};
-
-
-/** Cast wrapper */
-static INLINE struct xmesa_surface *
-xmesa_surface(struct pipe_surface *ps)
-{
-   return (struct xmesa_surface *) ps;
-}
-
-
 extern void
-xmesa_clear(struct pipe_context *pipe, struct pipe_surface *ps, uint value);
-
-extern struct pipe_context *
-xmesa_create_context(XMesaContext xm);
-
-extern struct pipe_surface *
-xmesa_surface_alloc(struct pipe_context *pipe, GLuint format);
-
-extern struct pipe_surface *
-xmesa_new_color_surface(struct pipe_winsys *winsys, GLuint format);
-
-extern struct pipe_winsys *
-xmesa_get_pipe_winsys(void);
-
-extern void
-xmesa_get_tile(struct pipe_context *pipe, struct pipe_surface *ps,
-               uint x, uint y, uint w, uint h, void *p, int dst_stride);
+xmesa_delete_framebuffer(struct gl_framebuffer *fb);
 
-extern void
-xmesa_put_tile(struct pipe_context *pipe, struct pipe_surface *ps,
-               uint x, uint y, uint w, uint h, const void *p, int src_stride);
+extern XMesaBuffer
+xmesa_find_buffer(XMesaDisplay *dpy, XMesaColormap cmap, XMesaBuffer notThis);
 
 extern void
-xmesa_get_tile_rgba(struct pipe_context *pipe, struct pipe_surface *ps,
-                    uint x, uint y, uint w, uint h, float *p);
+xmesa_check_and_update_buffer_size(XMesaContext xmctx, XMesaBuffer drawBuffer);
 
 extern void
-xmesa_put_tile_rgba(struct pipe_context *pipe, struct pipe_surface *ps,
-                    uint x, uint y, uint w, uint h, const float *p);
-
+xmesa_destroy_buffers_on_display(XMesaDisplay *dpy);
 
-extern struct pipe_surface *
-xmesa_create_front_surface(XMesaVisual vis, Window win);
+extern struct pipe_context *
+xmesa_create_pipe_context(XMesaContext xm, uint pixelformat);
 
 static INLINE GLuint
 xmesa_buffer_width(XMesaBuffer b)
@@ -583,5 +164,7 @@ xmesa_buffer_height(XMesaBuffer b)
    return b->stfb->Base.Height;
 }
 
+extern void
+xmesa_display_surface(XMesaBuffer b, const struct pipe_surface *surf);
 
 #endif