st/egl_g3d: Rename to st/egl.

Simply the name to egl.

8 files changed, 2413 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/egl/x11/native_dri2.c b/src/gallium/state_trackers/egl/x11/native_dri2.c
new file mode 100644
index 0000000000..07f82d878c
--- /dev/null
+++ b/src/gallium/state_trackers/egl/x11/native_dri2.c
@@ -0,0 +1,705 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.8
+ *
+ * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "util/u_memory.h"
+#include "util/u_math.h"
+#include "util/u_format.h"
+#include "pipe/p_compiler.h"
+#include "pipe/p_screen.h"
+#include "pipe/p_context.h"
+#include "pipe/p_state.h"
+#include "state_tracker/drm_api.h"
+#include "egllog.h"
+
+#include "native_x11.h"
+#include "x11_screen.h"
+
+enum dri2_surface_type {
+   DRI2_SURFACE_TYPE_WINDOW,
+   DRI2_SURFACE_TYPE_PIXMAP,
+   DRI2_SURFACE_TYPE_PBUFFER
+};
+
+struct dri2_display {
+   struct native_display base;
+   Display *dpy;
+   boolean own_dpy;
+
+   struct drm_api *api;
+   struct x11_screen *xscr;
+   int xscr_number;
+
+   struct dri2_config *configs;
+   int num_configs;
+};
+
+struct dri2_surface {
+   struct native_surface base;
+   Drawable drawable;
+   enum dri2_surface_type type;
+   enum pipe_format color_format;
+   struct dri2_display *dri2dpy;
+
+   struct pipe_texture *pbuffer_textures[NUM_NATIVE_ATTACHMENTS];
+   boolean have_back, have_fake;
+   int width, height;
+   unsigned int sequence_number;
+};
+
+struct dri2_config {
+   struct native_config base;
+};
+
+static INLINE struct dri2_display *
+dri2_display(const struct native_display *ndpy)
+{
+   return (struct dri2_display *) ndpy;
+}
+
+static INLINE struct dri2_surface *
+dri2_surface(const struct native_surface *nsurf)
+{
+   return (struct dri2_surface *) nsurf;
+}
+
+static INLINE struct dri2_config *
+dri2_config(const struct native_config *nconf)
+{
+   return (struct dri2_config *) nconf;
+}
+
+static boolean
+dri2_surface_flush_frontbuffer(struct native_surface *nsurf)
+{
+   struct dri2_surface *dri2surf = dri2_surface(nsurf);
+   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
+
+   /* pbuffer is private */
+   if (dri2surf->type == DRI2_SURFACE_TYPE_PBUFFER)
+      return TRUE;
+
+   /* copy to real front buffer */
+   if (dri2surf->have_fake)
+      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
+            0, 0, dri2surf->width, dri2surf->height,
+            DRI2BufferFakeFrontLeft, DRI2BufferFrontLeft);
+
+   return TRUE;
+}
+
+static boolean
+dri2_surface_swap_buffers(struct native_surface *nsurf)
+{
+   struct dri2_surface *dri2surf = dri2_surface(nsurf);
+   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
+
+   /* pbuffer is private */
+   if (dri2surf->type == DRI2_SURFACE_TYPE_PBUFFER)
+      return TRUE;
+
+   /* copy to front buffer */
+   if (dri2surf->have_back)
+      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
+            0, 0, dri2surf->width, dri2surf->height,
+            DRI2BufferBackLeft, DRI2BufferFrontLeft);
+
+   /* and update fake front buffer */
+   if (dri2surf->have_fake)
+      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
+            0, 0, dri2surf->width, dri2surf->height,
+            DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
+
+   return TRUE;
+}
+
+static boolean
+dri2_surface_validate(struct native_surface *nsurf, uint attachment_mask,
+                      unsigned int *seq_num, struct pipe_texture **textures,
+                      int *width, int *height)
+{
+   struct dri2_surface *dri2surf = dri2_surface(nsurf);
+   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
+   unsigned int dri2atts[NUM_NATIVE_ATTACHMENTS];
+   struct pipe_texture templ;
+   struct x11_drawable_buffer *xbufs;
+   int num_ins, num_outs, att, i;
+
+   if (attachment_mask) {
+      memset(&templ, 0, sizeof(templ));
+      templ.target = PIPE_TEXTURE_2D;
+      templ.last_level = 0;
+      templ.width0 = dri2surf->width;
+      templ.height0 = dri2surf->height;
+      templ.depth0 = 1;
+      templ.format = dri2surf->color_format;
+      templ.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
+
+      if (textures)
+         memset(textures, 0, sizeof(*textures) * NUM_NATIVE_ATTACHMENTS);
+   }
+
+   /* create textures for pbuffer */
+   if (dri2surf->type == DRI2_SURFACE_TYPE_PBUFFER) {
+      struct pipe_screen *screen = dri2dpy->base.screen;
+
+      for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
+         struct pipe_texture *ptex = dri2surf->pbuffer_textures[att];
+
+         /* delay the allocation */
+         if (!native_attachment_mask_test(attachment_mask, att))
+            continue;
+
+         if (!ptex) {
+            ptex = screen->texture_create(screen, &templ);
+            dri2surf->pbuffer_textures[att] = ptex;
+         }
+
+         if (textures)
+            pipe_texture_reference(&textures[att], ptex);
+      }
+
+      if (seq_num)
+         *seq_num = dri2surf->sequence_number;
+      if (width)
+         *width = dri2surf->width;
+      if (height)
+         *height = dri2surf->height;
+
+      return TRUE;
+   }
+
+   /* prepare the attachments */
+   num_ins = 0;
+   for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
+      if (native_attachment_mask_test(attachment_mask, att)) {
+         unsigned int dri2att;
+
+         switch (att) {
+         case NATIVE_ATTACHMENT_FRONT_LEFT:
+            dri2att = DRI2BufferFrontLeft;
+            break;
+         case NATIVE_ATTACHMENT_BACK_LEFT:
+            dri2att = DRI2BufferBackLeft;
+            break;
+         case NATIVE_ATTACHMENT_FRONT_RIGHT:
+            dri2att = DRI2BufferFrontRight;
+            break;
+         case NATIVE_ATTACHMENT_BACK_RIGHT:
+            dri2att = DRI2BufferBackRight;
+            break;
+         default:
+            assert(0);
+            dri2att = 0;
+            break;
+         }
+
+         dri2atts[num_ins] = dri2att;
+         num_ins++;
+      }
+   }
+
+   dri2surf->have_back = FALSE;
+   dri2surf->have_fake = FALSE;
+
+   /* remember old geometry */
+   templ.width0 = dri2surf->width;
+   templ.height0 = dri2surf->height;
+
+   xbufs = x11_drawable_get_buffers(dri2dpy->xscr, dri2surf->drawable,
+                                    &dri2surf->width, &dri2surf->height,
+                                    dri2atts, FALSE, num_ins, &num_outs);
+   if (!xbufs)
+      return FALSE;
+
+   if (templ.width0 != dri2surf->width || templ.height0 != dri2surf->height) {
+      /* are there cases where the buffers change and the geometry doesn't? */
+      dri2surf->sequence_number++;
+
+      templ.width0 = dri2surf->width;
+      templ.height0 = dri2surf->height;
+   }
+
+   for (i = 0; i < num_outs; i++) {
+      struct x11_drawable_buffer *xbuf = &xbufs[i];
+      const char *desc;
+      enum native_attachment natt;
+
+      switch (xbuf->attachment) {
+      case DRI2BufferFrontLeft:
+         natt = NATIVE_ATTACHMENT_FRONT_LEFT;
+         desc = "DRI2 Front Buffer";
+         break;
+      case DRI2BufferFakeFrontLeft:
+         natt = NATIVE_ATTACHMENT_FRONT_LEFT;
+         desc = "DRI2 Fake Front Buffer";
+         dri2surf->have_fake = TRUE;
+         break;
+      case DRI2BufferBackLeft:
+         natt = NATIVE_ATTACHMENT_BACK_LEFT;
+         desc = "DRI2 Back Buffer";
+         dri2surf->have_back = TRUE;
+         break;
+      default:
+         desc = NULL;
+         break;
+      }
+
+      if (!desc || !native_attachment_mask_test(attachment_mask, natt) ||
+          (textures && textures[natt])) {
+         if (!desc)
+            _eglLog(_EGL_WARNING, "unknown buffer %d", xbuf->attachment);
+         else if (!native_attachment_mask_test(attachment_mask, natt))
+            _eglLog(_EGL_WARNING, "unexpected buffer %d", xbuf->attachment);
+         else
+            _eglLog(_EGL_WARNING, "both real and fake front buffers are listed");
+         continue;
+      }
+
+      if (textures) {
+         struct pipe_texture *ptex =
+            dri2dpy->api->texture_from_shared_handle(dri2dpy->api,
+                  dri2dpy->base.screen, &templ,
+                  desc, xbuf->pitch, xbuf->name);
+         if (ptex) {
+            /* the caller owns the textures */
+            textures[natt] = ptex;
+         }
+      }
+   }
+
+   free(xbufs);
+
+   if (seq_num)
+      *seq_num = dri2surf->sequence_number;
+   if (width)
+      *width = dri2surf->width;
+   if (height)
+      *height = dri2surf->height;
+
+   return TRUE;
+}
+
+static void
+dri2_surface_wait(struct native_surface *nsurf)
+{
+   struct dri2_surface *dri2surf = dri2_surface(nsurf);
+   struct dri2_display *dri2dpy = dri2surf->dri2dpy;
+
+   if (dri2surf->have_fake) {
+      x11_drawable_copy_buffers(dri2dpy->xscr, dri2surf->drawable,
+            0, 0, dri2surf->width, dri2surf->height,
+            DRI2BufferFrontLeft, DRI2BufferFakeFrontLeft);
+   }
+}
+
+static void
+dri2_surface_destroy(struct native_surface *nsurf)
+{
+   struct dri2_surface *dri2surf = dri2_surface(nsurf);
+   int i;
+
+   for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
+      struct pipe_texture *ptex = dri2surf->pbuffer_textures[i];
+      pipe_texture_reference(&ptex, NULL);
+   }
+
+   if (dri2surf->drawable)
+      x11_drawable_enable_dri2(dri2surf->dri2dpy->xscr,
+            dri2surf->drawable, FALSE);
+   free(dri2surf);
+}
+
+static struct dri2_surface *
+dri2_display_create_surface(struct native_display *ndpy,
+                            enum dri2_surface_type type,
+                            Drawable drawable,
+                            const struct native_config *nconf)
+{
+   struct dri2_display *dri2dpy = dri2_display(ndpy);
+   struct dri2_config *dri2conf = dri2_config(nconf);
+   struct dri2_surface *dri2surf;
+
+   dri2surf = CALLOC_STRUCT(dri2_surface);
+   if (!dri2surf)
+      return NULL;
+
+   if (drawable)
+      x11_drawable_enable_dri2(dri2dpy->xscr, drawable, TRUE);
+
+   dri2surf->dri2dpy = dri2dpy;
+   dri2surf->type = type;
+   dri2surf->drawable = drawable;
+   dri2surf->color_format = dri2conf->base.color_format;
+
+   dri2surf->base.destroy = dri2_surface_destroy;
+   dri2surf->base.swap_buffers = dri2_surface_swap_buffers;
+   dri2surf->base.flush_frontbuffer = dri2_surface_flush_frontbuffer;
+   dri2surf->base.validate = dri2_surface_validate;
+   dri2surf->base.wait = dri2_surface_wait;
+
+   return dri2surf;
+}
+
+static struct native_surface *
+dri2_display_create_window_surface(struct native_display *ndpy,
+                                   EGLNativeWindowType win,
+                                   const struct native_config *nconf)
+{
+   struct dri2_surface *dri2surf;
+
+   dri2surf = dri2_display_create_surface(ndpy, DRI2_SURFACE_TYPE_WINDOW,
+         (Drawable) win, nconf);
+   return (dri2surf) ? &dri2surf->base : NULL;
+}
+
+static struct native_surface *
+dri2_display_create_pixmap_surface(struct native_display *ndpy,
+                                   EGLNativePixmapType pix,
+                                   const struct native_config *nconf)
+{
+   struct dri2_surface *dri2surf;
+
+   dri2surf = dri2_display_create_surface(ndpy, DRI2_SURFACE_TYPE_PIXMAP,
+         (Drawable) pix, nconf);
+   return (dri2surf) ? &dri2surf->base : NULL;
+}
+
+static struct native_surface *
+dri2_display_create_pbuffer_surface(struct native_display *ndpy,
+                                    const struct native_config *nconf,
+                                    uint width, uint height)
+{
+   struct dri2_surface *dri2surf;
+
+   dri2surf = dri2_display_create_surface(ndpy, DRI2_SURFACE_TYPE_PBUFFER,
+         (Drawable) None, nconf);
+   if (dri2surf) {
+      dri2surf->width = width;
+      dri2surf->height = height;
+   }
+   return (dri2surf) ? &dri2surf->base : NULL;
+}
+
+static struct pipe_context *
+dri2_display_create_context(struct native_display *ndpy, void *context_private)
+{
+   struct dri2_display *dri2dpy = dri2_display(ndpy);
+   struct pipe_context *pctx;
+
+   pctx = dri2dpy->api->create_context(dri2dpy->api, dri2dpy->base.screen);
+   if (pctx)
+      pctx->priv = context_private;
+   return pctx;
+}
+
+static int
+choose_color_format(const __GLcontextModes *mode, enum pipe_format formats[32])
+{
+   int count = 0;
+
+   switch (mode->rgbBits) {
+   case 32:
+      formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
+      formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
+      break;
+   case 24:
+      formats[count++] = PIPE_FORMAT_X8R8G8B8_UNORM;
+      formats[count++] = PIPE_FORMAT_B8G8R8X8_UNORM;
+      formats[count++] = PIPE_FORMAT_A8R8G8B8_UNORM;
+      formats[count++] = PIPE_FORMAT_B8G8R8A8_UNORM;
+      break;
+   case 16:
+      formats[count++] = PIPE_FORMAT_R5G6B5_UNORM;
+      break;
+   default:
+      break;
+   }
+
+   return count;
+}
+
+static int
+choose_depth_stencil_format(const __GLcontextModes *mode,
+                            enum pipe_format formats[32])
+{
+   int count = 0;
+
+   switch (mode->depthBits) {
+   case 32:
+      formats[count++] = PIPE_FORMAT_Z32_UNORM;
+      break;
+   case 24:
+      if (mode->stencilBits) {
+         formats[count++] = PIPE_FORMAT_S8Z24_UNORM;
+         formats[count++] = PIPE_FORMAT_Z24S8_UNORM;
+      }
+      else {
+         formats[count++] = PIPE_FORMAT_X8Z24_UNORM;
+         formats[count++] = PIPE_FORMAT_Z24X8_UNORM;
+      }
+      break;
+   case 16:
+      formats[count++] = PIPE_FORMAT_Z16_UNORM;
+      break;
+   default:
+      break;
+   }
+
+   return count;
+}
+
+static boolean
+is_format_supported(struct pipe_screen *screen,
+                    enum pipe_format fmt, boolean is_color)
+{
+   return screen->is_format_supported(screen, fmt, PIPE_TEXTURE_2D,
+         (is_color) ? PIPE_TEXTURE_USAGE_RENDER_TARGET :
+         PIPE_TEXTURE_USAGE_DEPTH_STENCIL, 0);
+}
+
+static boolean
+dri2_display_convert_config(struct native_display *ndpy,
+                            const __GLcontextModes *mode,
+                            struct native_config *nconf)
+{
+   enum pipe_format formats[32];
+   int num_formats, i;
+
+   if (!(mode->renderType & GLX_RGBA_BIT) || !mode->rgbMode)
+      return FALSE;
+
+   /* skip single-buffered configs */
+   if (!mode->doubleBufferMode)
+      return FALSE;
+
+   nconf->mode = *mode;
+   nconf->mode.renderType = GLX_RGBA_BIT;
+   nconf->mode.rgbMode = TRUE;
+   /* pbuffer is allocated locally and is always supported */
+   nconf->mode.drawableType |= GLX_PBUFFER_BIT;
+   /* the swap method is always copy */
+   nconf->mode.swapMethod = GLX_SWAP_COPY_OML;
+
+   /* fix up */
+   nconf->mode.rgbBits =
+      nconf->mode.redBits + nconf->mode.greenBits +
+      nconf->mode.blueBits + nconf->mode.alphaBits;
+   if (!(nconf->mode.drawableType & GLX_WINDOW_BIT)) {
+      nconf->mode.visualID = 0;
+      nconf->mode.visualType = GLX_NONE;
+   }
+   if (!(nconf->mode.drawableType & GLX_PBUFFER_BIT)) {
+      nconf->mode.bindToTextureRgb = FALSE;
+      nconf->mode.bindToTextureRgba = FALSE;
+   }
+
+   nconf->color_format = PIPE_FORMAT_NONE;
+   nconf->depth_format = PIPE_FORMAT_NONE;
+   nconf->stencil_format = PIPE_FORMAT_NONE;
+
+   /* choose color format */
+   num_formats = choose_color_format(mode, formats);
+   for (i = 0; i < num_formats; i++) {
+      if (is_format_supported(ndpy->screen, formats[i], TRUE)) {
+         nconf->color_format = formats[i];
+         break;
+      }
+   }
+   if (nconf->color_format == PIPE_FORMAT_NONE)
+      return FALSE;
+
+   /* choose depth/stencil format */
+   num_formats = choose_depth_stencil_format(mode, formats);
+   for (i = 0; i < num_formats; i++) {
+      if (is_format_supported(ndpy->screen, formats[i], FALSE)) {
+         nconf->depth_format = formats[i];
+         nconf->stencil_format = formats[i];
+         break;
+      }
+   }
+   if ((nconf->mode.depthBits && nconf->depth_format == PIPE_FORMAT_NONE) ||
+       (nconf->mode.stencilBits && nconf->stencil_format == PIPE_FORMAT_NONE))
+      return FALSE;
+
+   return TRUE;
+}
+
+static const struct native_config **
+dri2_display_get_configs(struct native_display *ndpy, int *num_configs)
+{
+   struct dri2_display *dri2dpy = dri2_display(ndpy);
+   const struct native_config **configs;
+   int i;
+
+   /* first time */
+   if (!dri2dpy->configs) {
+      const __GLcontextModes *modes;
+      int num_modes, count;
+
+      modes = x11_screen_get_glx_configs(dri2dpy->xscr);
+      if (!modes)
+         return NULL;
+      num_modes = x11_context_modes_count(modes);
+
+      dri2dpy->configs = calloc(num_modes, sizeof(*dri2dpy->configs));
+      if (!dri2dpy->configs)
+         return NULL;
+
+      count = 0;
+      for (i = 0; i < num_modes; i++) {
+         struct native_config *nconf = &dri2dpy->configs[count].base;
+         if (dri2_display_convert_config(&dri2dpy->base, modes, nconf))
+            count++;
+         modes = modes->next;
+      }
+
+      dri2dpy->num_configs = count;
+   }
+
+   configs = malloc(dri2dpy->num_configs * sizeof(*configs));
+   if (configs) {
+      for (i = 0; i < dri2dpy->num_configs; i++)
+         configs[i] = (const struct native_config *) &dri2dpy->configs[i];
+      if (num_configs)
+         *num_configs = dri2dpy->num_configs;
+   }
+
+   return configs;
+}
+
+static boolean
+dri2_display_is_pixmap_supported(struct native_display *ndpy,
+                                 EGLNativePixmapType pix,
+                                 const struct native_config *nconf)
+{
+   struct dri2_display *dri2dpy = dri2_display(ndpy);
+   uint depth, nconf_depth;
+
+   depth = x11_drawable_get_depth(dri2dpy->xscr, (Drawable) pix);
+   nconf_depth = util_format_get_blocksizebits(nconf->color_format);
+
+   /* simple depth match for now */
+   return (depth == nconf_depth || (depth == 24 && depth + 8 == nconf_depth));
+}
+
+static void
+dri2_display_destroy(struct native_display *ndpy)
+{
+   struct dri2_display *dri2dpy = dri2_display(ndpy);
+
+   if (dri2dpy->configs)
+      free(dri2dpy->configs);
+
+   if (dri2dpy->base.screen)
+      dri2dpy->base.screen->destroy(dri2dpy->base.screen);
+
+   if (dri2dpy->xscr)
+      x11_screen_destroy(dri2dpy->xscr);
+   if (dri2dpy->own_dpy)
+      XCloseDisplay(dri2dpy->dpy);
+   if (dri2dpy->api && dri2dpy->api->destroy)
+      dri2dpy->api->destroy(dri2dpy->api);
+   free(dri2dpy);
+}
+
+/**
+ * Initialize DRI2 and pipe screen.
+ */
+static boolean
+dri2_display_init_screen(struct native_display *ndpy)
+{
+   struct dri2_display *dri2dpy = dri2_display(ndpy);
+   const char *driver = dri2dpy->api->name;
+   struct drm_create_screen_arg arg;
+   int fd;
+
+   if (!x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_DRI2) ||
+       !x11_screen_support(dri2dpy->xscr, X11_SCREEN_EXTENSION_GLX)) {
+      _eglLog(_EGL_WARNING, "GLX/DRI2 is not supported");
+      return FALSE;
+   }
+
+   fd = x11_screen_enable_dri2(dri2dpy->xscr, driver);
+   if (fd < 0)
+      return FALSE;
+
+   memset(&arg, 0, sizeof(arg));
+   arg.mode = DRM_CREATE_NORMAL;
+   dri2dpy->base.screen = dri2dpy->api->create_screen(dri2dpy->api, fd, &arg);
+   if (!dri2dpy->base.screen) {
+      _eglLog(_EGL_WARNING, "failed to create DRM screen");
+      return FALSE;
+   }
+
+   return TRUE;
+}
+
+struct native_display *
+x11_create_dri2_display(EGLNativeDisplayType dpy, struct drm_api *api)
+{
+   struct dri2_display *dri2dpy;
+
+   dri2dpy = CALLOC_STRUCT(dri2_display);
+   if (!dri2dpy)
+      return NULL;
+
+   dri2dpy->api = api;
+   if (!dri2dpy->api) {
+      _eglLog(_EGL_WARNING, "failed to create DRM API");
+      free(dri2dpy);
+      return NULL;
+   }
+
+   dri2dpy->dpy = dpy;
+   if (!dri2dpy->dpy) {
+      dri2dpy->dpy = XOpenDisplay(NULL);
+      if (!dri2dpy->dpy) {
+         dri2_display_destroy(&dri2dpy->base);
+         return NULL;
+      }
+      dri2dpy->own_dpy = TRUE;
+   }
+
+   dri2dpy->xscr_number = DefaultScreen(dri2dpy->dpy);
+   dri2dpy->xscr = x11_screen_create(dri2dpy->dpy, dri2dpy->xscr_number);
+   if (!dri2dpy->xscr) {
+      dri2_display_destroy(&dri2dpy->base);
+      return NULL;
+   }
+
+   if (!dri2_display_init_screen(&dri2dpy->base)) {
+      dri2_display_destroy(&dri2dpy->base);
+      return NULL;
+   }
+
+   dri2dpy->base.destroy = dri2_display_destroy;
+   dri2dpy->base.get_configs = dri2_display_get_configs;
+   dri2dpy->base.is_pixmap_supported = dri2_display_is_pixmap_supported;
+   dri2dpy->base.create_context = dri2_display_create_context;
+   dri2dpy->base.create_window_surface = dri2_display_create_window_surface;
+   dri2dpy->base.create_pixmap_surface = dri2_display_create_pixmap_surface;
+   dri2dpy->base.create_pbuffer_surface = dri2_display_create_pbuffer_surface;
+
+   return &dri2dpy->base;
+}
diff --git a/src/gallium/state_trackers/egl/x11/native_x11.c b/src/gallium/state_trackers/egl/x11/native_x11.c
new file mode 100644
index 0000000000..695ab88010
--- /dev/null
+++ b/src/gallium/state_trackers/egl/x11/native_x11.c
@@ -0,0 +1,148 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.8
+ *
+ * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <string.h>
+#include "util/u_debug.h"
+#include "util/u_memory.h"
+#include "state_tracker/drm_api.h"
+#include "egllog.h"
+
+#include "native_x11.h"
+#include "x11_screen.h"
+
+#define X11_PROBE_MAGIC 0x11980BE /* "X11PROBE" */
+
+static struct drm_api *api;
+
+static void
+x11_probe_destroy(struct native_probe *nprobe)
+{
+   if (nprobe->data)
+      free(nprobe->data);
+   free(nprobe);
+}
+
+struct native_probe *
+native_create_probe(EGLNativeDisplayType dpy)
+{
+   struct native_probe *nprobe;
+   struct x11_screen *xscr;
+   int scr;
+   const char *driver_name = NULL;
+   Display *xdpy;
+
+   nprobe = CALLOC_STRUCT(native_probe);
+   if (!nprobe)
+      return NULL;
+
+   xdpy = dpy;
+   if (!xdpy) {
+      xdpy = XOpenDisplay(NULL);
+      if (!xdpy) {
+         free(nprobe);
+         return NULL;
+      }
+   }
+
+   scr = DefaultScreen(xdpy);
+   xscr = x11_screen_create(xdpy, scr);
+   if (xscr) {
+      if (x11_screen_support(xscr, X11_SCREEN_EXTENSION_DRI2)) {
+         driver_name = x11_screen_probe_dri2(xscr);
+         nprobe->data = strdup(driver_name);
+      }
+
+      x11_screen_destroy(xscr);
+   }
+
+   if (xdpy != dpy)
+      XCloseDisplay(xdpy);
+
+   nprobe->magic = X11_PROBE_MAGIC;
+   nprobe->display = dpy;
+
+   nprobe->destroy = x11_probe_destroy;
+
+   return nprobe;
+}
+
+enum native_probe_result
+native_get_probe_result(struct native_probe *nprobe)
+{
+   if (!nprobe || nprobe->magic != X11_PROBE_MAGIC)
+      return NATIVE_PROBE_UNKNOWN;
+
+   if (!api)
+      api = drm_api_create();
+
+   /* this is a software driver */
+   if (!api)
+      return NATIVE_PROBE_SUPPORTED;
+
+   /* the display does not support DRI2 or the driver mismatches */
+   if (!nprobe->data || strcmp(api->name, (const char *) nprobe->data) != 0)
+      return NATIVE_PROBE_FALLBACK;
+
+   return NATIVE_PROBE_EXACT;
+}
+
+const char *
+native_get_name(void)
+{
+   static char x11_name[32];
+
+   if (!api)
+      api = drm_api_create();
+
+   if (api)
+      snprintf(x11_name, sizeof(x11_name), "X11/%s", api->name);
+   else
+      snprintf(x11_name, sizeof(x11_name), "X11");
+
+   return x11_name;
+}
+
+struct native_display *
+native_create_display(EGLNativeDisplayType dpy)
+{
+   struct native_display *ndpy = NULL;
+   boolean force_sw;
+
+   if (!api)
+      api = drm_api_create();
+
+   force_sw = debug_get_bool_option("EGL_SOFTWARE", FALSE);
+   if (api && !force_sw) {
+      ndpy = x11_create_dri2_display(dpy, api);
+   }
+
+   if (!ndpy) {
+      EGLint level = (force_sw) ? _EGL_INFO : _EGL_WARNING;
+
+      _eglLog(level, "use software fallback");
+      ndpy = x11_create_ximage_display(dpy, TRUE);
+   }
+
+   return ndpy;
+}
diff --git a/src/gallium/state_trackers/egl/x11/native_x11.h b/src/gallium/state_trackers/egl/x11/native_x11.h
new file mode 100644
index 0000000000..622ddac5df
--- /dev/null
+++ b/src/gallium/state_trackers/egl/x11/native_x11.h
@@ -0,0 +1,37 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.8
+ *
+ * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _NATIVE_X11_H_
+#define _NATIVE_X11_H_
+
+#include "state_tracker/drm_api.h"
+#include "common/native.h"
+
+struct native_display *
+x11_create_ximage_display(EGLNativeDisplayType dpy, boolean use_xshm);
+
+struct native_display *
+x11_create_dri2_display(EGLNativeDisplayType dpy, struct drm_api *api);
+
+#endif /* _NATIVE_X11_H_ */
diff --git a/src/gallium/state_trackers/egl/x11/native_ximage.c b/src/gallium/state_trackers/egl/x11/native_ximage.c
new file mode 100644
index 0000000000..dfa8df2223
--- /dev/null
+++ b/src/gallium/state_trackers/egl/x11/native_ximage.c
@@ -0,0 +1,694 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.8
+ *
+ * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <assert.h>
+#include <sys/ipc.h>
+#include <sys/types.h>
+#include <sys/shm.h>
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/extensions/XShm.h>
+#include "util/u_memory.h"
+#include "util/u_math.h"
+#include "util/u_format.h"
+#include "pipe/p_compiler.h"
+#include "pipe/internal/p_winsys_screen.h"
+#include "softpipe/sp_winsys.h"
+#include "egllog.h"
+
+#include "sw_winsys.h"
+#include "native_x11.h"
+#include "x11_screen.h"
+
+enum ximage_surface_type {
+   XIMAGE_SURFACE_TYPE_WINDOW,
+   XIMAGE_SURFACE_TYPE_PIXMAP,
+   XIMAGE_SURFACE_TYPE_PBUFFER
+};
+
+struct ximage_display {
+   struct native_display base;
+   Display *dpy;
+   boolean own_dpy;
+
+   struct x11_screen *xscr;
+   int xscr_number;
+
+   boolean use_xshm;
+
+   struct pipe_winsys *winsys;
+   struct ximage_config *configs;
+   int num_configs;
+};
+
+struct ximage_buffer {
+   XImage *ximage;
+
+   struct pipe_texture *texture;
+   XShmSegmentInfo *shm_info;
+   boolean xshm_attached;
+};
+
+struct ximage_surface {
+   struct native_surface base;
+   Drawable drawable;
+   enum ximage_surface_type type;
+   enum pipe_format color_format;
+   XVisualInfo visual;
+   struct ximage_display *xdpy;
+
+   int width, height;
+   GC gc;
+
+   struct ximage_buffer buffers[NUM_NATIVE_ATTACHMENTS];
+   unsigned int sequence_number;
+};
+
+struct ximage_config {
+   struct native_config base;
+   const XVisualInfo *visual;
+};
+
+static INLINE struct ximage_display *
+ximage_display(const struct native_display *ndpy)
+{
+   return (struct ximage_display *) ndpy;
+}
+
+static INLINE struct ximage_surface *
+ximage_surface(const struct native_surface *nsurf)
+{
+   return (struct ximage_surface *) nsurf;
+}
+
+static INLINE struct ximage_config *
+ximage_config(const struct native_config *nconf)
+{
+   return (struct ximage_config *) nconf;
+}
+
+static void
+ximage_surface_free_buffer(struct native_surface *nsurf,
+                           enum native_attachment which)
+{
+   struct ximage_surface *xsurf = ximage_surface(nsurf);
+   struct ximage_buffer *xbuf = &xsurf->buffers[which];
+
+   pipe_texture_reference(&xbuf->texture, NULL);
+
+   if (xbuf->shm_info) {
+      if (xbuf->xshm_attached)
+         XShmDetach(xsurf->xdpy->dpy, xbuf->shm_info);
+      if (xbuf->shm_info->shmaddr != (void *) -1)
+         shmdt(xbuf->shm_info->shmaddr);
+      if (xbuf->shm_info->shmid != -1)
+         shmctl(xbuf->shm_info->shmid, IPC_RMID, 0);
+
+      xbuf->shm_info->shmaddr = (void *) -1;
+      xbuf->shm_info->shmid = -1;
+   }
+}
+
+static boolean
+ximage_surface_alloc_buffer(struct native_surface *nsurf,
+                            enum native_attachment which)
+{
+   struct ximage_surface *xsurf = ximage_surface(nsurf);
+   struct ximage_buffer *xbuf = &xsurf->buffers[which];
+   struct pipe_screen *screen = xsurf->xdpy->base.screen;
+   struct pipe_texture templ;
+
+   /* free old data */
+   if (xbuf->texture)
+      ximage_surface_free_buffer(&xsurf->base, which);
+
+   memset(&templ, 0, sizeof(templ));
+   templ.target = PIPE_TEXTURE_2D;
+   templ.format = xsurf->color_format;
+   templ.width0 = xsurf->width;
+   templ.height0 = xsurf->height;
+   templ.depth0 = 1;
+   templ.tex_usage = PIPE_TEXTURE_USAGE_RENDER_TARGET;
+
+   if (xbuf->shm_info) {
+      struct pipe_buffer *pbuf;
+      unsigned stride, size;
+      void *addr = NULL;
+
+      stride = util_format_get_stride(xsurf->color_format, xsurf->width);
+      /* alignment should depend on visual? */
+      stride = align(stride, 4);
+      size = stride * xsurf->height;
+
+      /* create and attach shm object */
+      xbuf->shm_info->shmid = shmget(IPC_PRIVATE, size, 0755);
+      if (xbuf->shm_info->shmid != -1) {
+         xbuf->shm_info->shmaddr =
+            shmat(xbuf->shm_info->shmid, NULL, 0);
+         if (xbuf->shm_info->shmaddr != (void *) -1) {
+            if (XShmAttach(xsurf->xdpy->dpy, xbuf->shm_info)) {
+               addr = xbuf->shm_info->shmaddr;
+               xbuf->xshm_attached = TRUE;
+            }
+         }
+      }
+
+      if (addr) {
+         pbuf = screen->user_buffer_create(screen, addr, size);
+         if (pbuf) {
+            xbuf->texture =
+               screen->texture_blanket(screen, &templ, &stride, pbuf);
+            pipe_buffer_reference(&pbuf, NULL);
+         }
+      }
+   }
+   else {
+      xbuf->texture = screen->texture_create(screen, &templ);
+   }
+
+   /* clean up the buffer if allocation failed */
+   if (!xbuf->texture)
+      ximage_surface_free_buffer(&xsurf->base, which);
+
+   return (xbuf->texture != NULL);
+}
+
+static boolean
+ximage_surface_draw_buffer(struct native_surface *nsurf,
+                           enum native_attachment which)
+{
+   struct ximage_surface *xsurf = ximage_surface(nsurf);
+   struct ximage_buffer *xbuf = &xsurf->buffers[which];
+   struct pipe_screen *screen = xsurf->xdpy->base.screen;
+   struct pipe_transfer *transfer;
+
+   if (xsurf->type == XIMAGE_SURFACE_TYPE_PBUFFER)
+      return TRUE;
+
+   assert(xsurf->drawable && xbuf->ximage && xbuf->texture);
+
+   transfer = screen->get_tex_transfer(screen, xbuf->texture,
+         0, 0, 0, PIPE_TRANSFER_READ, 0, 0, xsurf->width, xsurf->height);
+   if (!transfer)
+      return FALSE;
+
+   xbuf->ximage->bytes_per_line = transfer->stride;
+   xbuf->ximage->data = screen->transfer_map(screen, transfer);
+   if (!xbuf->ximage->data) {
+      screen->tex_transfer_destroy(transfer);
+      return FALSE;
+   }
+
+
+   if (xbuf->shm_info)
+      XShmPutImage(xsurf->xdpy->dpy, xsurf->drawable, xsurf->gc,
+            xbuf->ximage, 0, 0, 0, 0, xsurf->width, xsurf->height, False);
+   else
+      XPutImage(xsurf->xdpy->dpy, xsurf->drawable, xsurf->gc,
+            xbuf->ximage, 0, 0, 0, 0, xsurf->width, xsurf->height);
+
+   xbuf->ximage->data = NULL;
+   screen->transfer_unmap(screen, transfer);
+
+   /*
+    * softpipe allows the pipe transfer to be re-used, but we don't want to
+    * rely on that behavior.
+    */
+   screen->tex_transfer_destroy(transfer);
+
+   XSync(xsurf->xdpy->dpy, FALSE);
+
+   return TRUE;
+}
+
+static boolean
+ximage_surface_flush_frontbuffer(struct native_surface *nsurf)
+{
+   return ximage_surface_draw_buffer(nsurf, NATIVE_ATTACHMENT_FRONT_LEFT);
+}
+
+static boolean
+ximage_surface_swap_buffers(struct native_surface *nsurf)
+{
+   struct ximage_surface *xsurf = ximage_surface(nsurf);
+   struct ximage_buffer *xfront, *xback, xtmp;
+
+   xfront = &xsurf->buffers[NATIVE_ATTACHMENT_FRONT_LEFT];
+   xback = &xsurf->buffers[NATIVE_ATTACHMENT_BACK_LEFT];
+
+   /* draw the back buffer directly if there is no front buffer */
+   if (!xfront->texture)
+      return ximage_surface_draw_buffer(nsurf, NATIVE_ATTACHMENT_BACK_LEFT);
+
+   /* swap the buffers */
+   xtmp = *xfront;
+   *xfront = *xback;
+   *xback = xtmp;
+
+   /* the front/back textures are swapped */
+   xsurf->sequence_number++;
+
+   return ximage_surface_draw_buffer(nsurf, NATIVE_ATTACHMENT_FRONT_LEFT);
+}
+
+static void
+ximage_surface_update_geometry(struct native_surface *nsurf)
+{
+   struct ximage_surface *xsurf = ximage_surface(nsurf);
+   Status ok;
+   Window root;
+   int x, y;
+   unsigned int w, h, border, depth;
+
+   /* pbuffer has fixed geometry */
+   if (xsurf->type == XIMAGE_SURFACE_TYPE_PBUFFER)
+      return;
+
+   ok = XGetGeometry(xsurf->xdpy->dpy, xsurf->drawable,
+         &root, &x, &y, &w, &h, &border, &depth);
+   if (ok) {
+      xsurf->width = w;
+      xsurf->height = h;
+   }
+}
+
+static boolean
+ximage_surface_validate(struct native_surface *nsurf, uint attachment_mask,
+                        unsigned int *seq_num, struct pipe_texture **textures,
+                        int *width, int *height)
+{
+   struct ximage_surface *xsurf = ximage_surface(nsurf);
+   boolean new_buffers = FALSE;
+   int att;
+
+   ximage_surface_update_geometry(&xsurf->base);
+
+   for (att = 0; att < NUM_NATIVE_ATTACHMENTS; att++) {
+      struct ximage_buffer *xbuf = &xsurf->buffers[att];
+
+      /* delay the allocation */
+      if (!native_attachment_mask_test(attachment_mask, att))
+         continue;
+
+      /* reallocate the texture */
+      if (!xbuf->texture ||
+          xsurf->width != xbuf->texture->width0 ||
+          xsurf->height != xbuf->texture->height0) {
+         new_buffers = TRUE;
+         if (ximage_surface_alloc_buffer(&xsurf->base, att)) {
+            /* update ximage */
+            if (xbuf->ximage) {
+               xbuf->ximage->width = xsurf->width;
+               xbuf->ximage->height = xsurf->height;
+            }
+         }
+      }
+
+      if (textures) {
+         textures[att] = NULL;
+         pipe_texture_reference(&textures[att], xbuf->texture);
+      }
+   }
+
+   /* increase the sequence number so that caller knows */
+   if (new_buffers)
+      xsurf->sequence_number++;
+
+   if (seq_num)
+      *seq_num = xsurf->sequence_number;
+   if (width)
+      *width = xsurf->width;
+   if (height)
+      *height = xsurf->height;
+
+   return TRUE;
+}
+
+static void
+ximage_surface_wait(struct native_surface *nsurf)
+{
+   struct ximage_surface *xsurf = ximage_surface(nsurf);
+   XSync(xsurf->xdpy->dpy, FALSE);
+   /* TODO XGetImage and update the front texture */
+}
+
+static void
+ximage_surface_destroy(struct native_surface *nsurf)
+{
+   struct ximage_surface *xsurf = ximage_surface(nsurf);
+   int i;
+
+   for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
+      struct ximage_buffer *xbuf = &xsurf->buffers[i];
+      ximage_surface_free_buffer(&xsurf->base, i);
+      /* xbuf->shm_info is owned by xbuf->ximage? */
+      if (xbuf->ximage) {
+         XDestroyImage(xbuf->ximage);
+         xbuf->ximage = NULL;
+      }
+   }
+
+   if (xsurf->type != XIMAGE_SURFACE_TYPE_PBUFFER)
+      XFreeGC(xsurf->xdpy->dpy, xsurf->gc);
+   free(xsurf);
+}
+
+static struct ximage_surface *
+ximage_display_create_surface(struct native_display *ndpy,
+                              enum ximage_surface_type type,
+                              Drawable drawable,
+                              const struct native_config *nconf)
+{
+   struct ximage_display *xdpy = ximage_display(ndpy);
+   struct ximage_config *xconf = ximage_config(nconf);
+   struct ximage_surface *xsurf;
+   int i;
+
+   xsurf = CALLOC_STRUCT(ximage_surface);
+   if (!xsurf)
+      return NULL;
+
+   xsurf->xdpy = xdpy;
+   xsurf->type = type;
+   xsurf->color_format = xconf->base.color_format;
+   xsurf->drawable = drawable;
+
+   if (xsurf->type != XIMAGE_SURFACE_TYPE_PBUFFER) {
+      xsurf->drawable = drawable;
+      xsurf->visual = *xconf->visual;
+
+      xsurf->gc = XCreateGC(xdpy->dpy, xsurf->drawable, 0, NULL);
+      if (!xsurf->gc) {
+         free(xsurf);
+         return NULL;
+      }
+
+      for (i = 0; i < NUM_NATIVE_ATTACHMENTS; i++) {
+         struct ximage_buffer *xbuf = &xsurf->buffers[i];
+
+         if (xdpy->use_xshm) {
+            xbuf->shm_info = calloc(1, sizeof(*xbuf->shm_info));
+            if (xbuf->shm_info) {
+               /* initialize shm info */
+               xbuf->shm_info->shmid = -1;
+               xbuf->shm_info->shmaddr = (void *) -1;
+               xbuf->shm_info->readOnly = TRUE;
+
+               xbuf->ximage = XShmCreateImage(xsurf->xdpy->dpy,
+                     xsurf->visual.visual,
+                     xsurf->visual.depth,
+                     ZPixmap, NULL,
+                     xbuf->shm_info,
+                     0, 0);
+            }
+         }
+         else {
+            xbuf->ximage = XCreateImage(xsurf->xdpy->dpy,
+                  xsurf->visual.visual,
+                  xsurf->visual.depth,
+                  ZPixmap, 0,   /* format, offset */
+                  NULL,         /* data */
+                  0, 0,         /* size */
+                  8,            /* bitmap_pad */
+                  0);           /* bytes_per_line */
+         }
+
+         if (!xbuf->ximage) {
+            XFreeGC(xdpy->dpy, xsurf->gc);
+            free(xsurf);
+            return NULL;
+         }
+      }
+   }
+
+   xsurf->base.destroy = ximage_surface_destroy;
+   xsurf->base.swap_buffers = ximage_surface_swap_buffers;
+   xsurf->base.flush_frontbuffer = ximage_surface_flush_frontbuffer;
+   xsurf->base.validate = ximage_surface_validate;
+   xsurf->base.wait = ximage_surface_wait;
+
+   return xsurf;
+}
+
+static struct native_surface *
+ximage_display_create_window_surface(struct native_display *ndpy,
+                                     EGLNativeWindowType win,
+                                     const struct native_config *nconf)
+{
+   struct ximage_surface *xsurf;
+
+   xsurf = ximage_display_create_surface(ndpy, XIMAGE_SURFACE_TYPE_WINDOW,
+         (Drawable) win, nconf);
+   return (xsurf) ? &xsurf->base : NULL;
+}
+
+static struct native_surface *
+ximage_display_create_pixmap_surface(struct native_display *ndpy,
+                                     EGLNativePixmapType pix,
+                                     const struct native_config *nconf)
+{
+   struct ximage_surface *xsurf;
+
+   xsurf = ximage_display_create_surface(ndpy, XIMAGE_SURFACE_TYPE_PIXMAP,
+         (Drawable) pix, nconf);
+   return (xsurf) ? &xsurf->base : NULL;
+}
+
+static struct native_surface *
+ximage_display_create_pbuffer_surface(struct native_display *ndpy,
+                                      const struct native_config *nconf,
+                                      uint width, uint height)
+{
+   struct ximage_surface *xsurf;
+
+   xsurf = ximage_display_create_surface(ndpy, XIMAGE_SURFACE_TYPE_PBUFFER,
+         (Drawable) None, nconf);
+   if (xsurf) {
+      xsurf->width = width;
+      xsurf->height = height;
+   }
+   return (xsurf) ? &xsurf->base : NULL;
+}
+
+static struct pipe_context *
+ximage_display_create_context(struct native_display *ndpy,
+                              void *context_private)
+{
+   struct pipe_context *pctx = softpipe_create(ndpy->screen);
+   if (pctx)
+      pctx->priv = context_private;
+   return pctx;
+}
+
+static enum pipe_format
+choose_format(const XVisualInfo *vinfo)
+{
+   enum pipe_format fmt;
+   /* TODO elaborate the formats */
+   switch (vinfo->depth) {
+   case 32:
+      fmt = PIPE_FORMAT_A8R8G8B8_UNORM;
+      break;
+   case 24:
+      fmt = PIPE_FORMAT_X8R8G8B8_UNORM;
+      break;
+   case 16:
+      fmt = PIPE_FORMAT_R5G6B5_UNORM;
+      break;
+   default:
+      fmt = PIPE_FORMAT_NONE;
+      break;
+   }
+
+   return fmt;
+}
+
+static const struct native_config **
+ximage_display_get_configs(struct native_display *ndpy, int *num_configs)
+{
+   struct ximage_display *xdpy = ximage_display(ndpy);
+   const struct native_config **configs;
+   int i;
+
+   /* first time */
+   if (!xdpy->configs) {
+      const XVisualInfo *visuals;
+      int num_visuals, count, j;
+
+      visuals = x11_screen_get_visuals(xdpy->xscr, &num_visuals);
+      if (!visuals)
+         return NULL;
+
+      /*
+       * Create two configs for each visual.
+       * One with depth/stencil buffer; one without
+       */
+      xdpy->configs = calloc(num_visuals * 2, sizeof(*xdpy->configs));
+      if (!xdpy->configs)
+         return NULL;
+
+      count = 0;
+      for (i = 0; i < num_visuals; i++) {
+         for (j = 0; j < 2; j++) {
+            struct ximage_config *xconf = &xdpy->configs[count];
+            __GLcontextModes *mode = &xconf->base.mode;
+
+            xconf->visual = &visuals[i];
+            xconf->base.color_format = choose_format(xconf->visual);
+            if (xconf->base.color_format == PIPE_FORMAT_NONE)
+               continue;
+
+            x11_screen_convert_visual(xdpy->xscr, xconf->visual, mode);
+            /* support double buffer mode */
+            mode->doubleBufferMode = TRUE;
+
+            xconf->base.depth_format = PIPE_FORMAT_NONE;
+            xconf->base.stencil_format = PIPE_FORMAT_NONE;
+            /* create the second config with depth/stencil buffer */
+            if (j == 1) {
+               xconf->base.depth_format = PIPE_FORMAT_S8Z24_UNORM;
+               xconf->base.stencil_format = PIPE_FORMAT_S8Z24_UNORM;
+               mode->depthBits = 24;
+               mode->stencilBits = 8;
+               mode->haveDepthBuffer = TRUE;
+               mode->haveStencilBuffer = TRUE;
+            }
+
+            mode->maxPbufferWidth = 4096;
+            mode->maxPbufferHeight = 4096;
+            mode->maxPbufferPixels = 4096 * 4096;
+            mode->drawableType =
+               GLX_WINDOW_BIT | GLX_PIXMAP_BIT | GLX_PBUFFER_BIT;
+            mode->swapMethod = GLX_SWAP_EXCHANGE_OML;
+
+            if (mode->alphaBits)
+               mode->bindToTextureRgba = TRUE;
+            else
+               mode->bindToTextureRgb = TRUE;
+
+            count++;
+         }
+      }
+
+      xdpy->num_configs = count;
+   }
+
+   configs = malloc(xdpy->num_configs * sizeof(*configs));
+   if (configs) {
+      for (i = 0; i < xdpy->num_configs; i++)
+         configs[i] = (const struct native_config *) &xdpy->configs[i];
+      if (num_configs)
+         *num_configs = xdpy->num_configs;
+   }
+   return configs;
+}
+
+static boolean
+ximage_display_is_pixmap_supported(struct native_display *ndpy,
+                                   EGLNativePixmapType pix,
+                                   const struct native_config *nconf)
+{
+   struct ximage_display *xdpy = ximage_display(ndpy);
+   enum pipe_format fmt;
+   uint depth;
+
+   depth = x11_drawable_get_depth(xdpy->xscr, (Drawable) pix);
+   switch (depth) {
+   case 32:
+      fmt = PIPE_FORMAT_A8R8G8B8_UNORM;
+      break;
+   case 24:
+      fmt = PIPE_FORMAT_X8R8G8B8_UNORM;
+      break;
+   case 16:
+      fmt = PIPE_FORMAT_R5G6B5_UNORM;
+      break;
+   default:
+      fmt = PIPE_FORMAT_NONE;
+      break;
+   }
+
+   return (fmt == nconf->color_format);
+}
+
+static void
+ximage_display_destroy(struct native_display *ndpy)
+{
+   struct ximage_display *xdpy = ximage_display(ndpy);
+
+   if (xdpy->configs)
+      free(xdpy->configs);
+
+   xdpy->base.screen->destroy(xdpy->base.screen);
+   free(xdpy->winsys);
+
+   x11_screen_destroy(xdpy->xscr);
+   if (xdpy->own_dpy)
+      XCloseDisplay(xdpy->dpy);
+   free(xdpy);
+}
+
+struct native_display *
+x11_create_ximage_display(EGLNativeDisplayType dpy, boolean use_xshm)
+{
+   struct ximage_display *xdpy;
+
+   xdpy = CALLOC_STRUCT(ximage_display);
+   if (!xdpy)
+      return NULL;
+
+   xdpy->dpy = dpy;
+   if (!xdpy->dpy) {
+      xdpy->dpy = XOpenDisplay(NULL);
+      if (!xdpy->dpy) {
+         free(xdpy);
+         return NULL;
+      }
+      xdpy->own_dpy = TRUE;
+   }
+
+   xdpy->xscr_number = DefaultScreen(xdpy->dpy);
+   xdpy->xscr = x11_screen_create(xdpy->dpy, xdpy->xscr_number);
+   if (!xdpy->xscr) {
+      free(xdpy);
+      return NULL;
+   }
+
+   xdpy->use_xshm =
+      (use_xshm && x11_screen_support(xdpy->xscr, X11_SCREEN_EXTENSION_XSHM));
+
+   xdpy->winsys = create_sw_winsys();
+   xdpy->base.screen = softpipe_create_screen(xdpy->winsys);
+
+   xdpy->base.destroy = ximage_display_destroy;
+
+   xdpy->base.get_configs = ximage_display_get_configs;
+   xdpy->base.is_pixmap_supported = ximage_display_is_pixmap_supported;
+   xdpy->base.create_context = ximage_display_create_context;
+   xdpy->base.create_window_surface = ximage_display_create_window_surface;
+   xdpy->base.create_pixmap_surface = ximage_display_create_pixmap_surface;
+   xdpy->base.create_pbuffer_surface = ximage_display_create_pbuffer_surface;
+
+   return &xdpy->base;
+}
diff --git a/src/gallium/state_trackers/egl/x11/sw_winsys.c b/src/gallium/state_trackers/egl/x11/sw_winsys.c
new file mode 100644
index 0000000000..6ee3ede38c
--- /dev/null
+++ b/src/gallium/state_trackers/egl/x11/sw_winsys.c
@@ -0,0 +1,231 @@
+/**************************************************************************
+ * 
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+/**
+ * Totally software-based winsys layer.
+ * Note that the one winsys function that we can't implement here
+ * is flush_frontbuffer().
+ * Whoever uses this code will have to provide that.
+ *
+ * Authors: Brian Paul
+ */
+
+
+#include "pipe/internal/p_winsys_screen.h"
+#include "pipe/p_state.h"
+#include "pipe/p_inlines.h"
+#include "util/u_format.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "sw_winsys.h"
+
+
+
+/** Subclass of pipe_winsys */
+struct sw_pipe_winsys
+{
+   struct pipe_winsys Base;
+   /* no extra fields for now */
+};
+
+
+/** subclass of pipe_buffer */
+struct sw_pipe_buffer
+{
+   struct pipe_buffer Base;
+   boolean UserBuffer;  /** Is this a user-space buffer? */
+   void *Data;
+   void *Mapped;
+};
+
+
+/** cast wrapper */
+static INLINE struct sw_pipe_buffer *
+sw_pipe_buffer(struct pipe_buffer *b)
+{
+   return (struct sw_pipe_buffer *) b;
+}
+
+
+static const char *
+get_name(struct pipe_winsys *pws)
+{
+   return "software";
+}
+
+
+/** Create new pipe_buffer and allocate storage of given size */
+static struct pipe_buffer *
+buffer_create(struct pipe_winsys *pws, 
+              unsigned alignment, 
+              unsigned usage,
+              unsigned size)
+{
+   struct sw_pipe_buffer *buffer = CALLOC_STRUCT(sw_pipe_buffer);
+   if (!buffer)
+      return NULL;
+
+   pipe_reference_init(&buffer->Base.reference, 1);
+   buffer->Base.alignment = alignment;
+   buffer->Base.usage = usage;
+   buffer->Base.size = size;
+
+   /* align to 16-byte multiple for Cell */
+   buffer->Data = align_malloc(size, MAX2(alignment, 16));
+
+   return &buffer->Base;
+}
+
+
+/**
+ * Create buffer which wraps user-space data.
+ */
+static struct pipe_buffer *
+user_buffer_create(struct pipe_winsys *pws, void *ptr, unsigned bytes)
+{
+   struct sw_pipe_buffer *buffer = CALLOC_STRUCT(sw_pipe_buffer);
+   if (!buffer)
+      return NULL;
+
+   pipe_reference_init(&buffer->Base.reference, 1);
+   buffer->Base.size = bytes;
+   buffer->UserBuffer = TRUE;
+   buffer->Data = ptr;
+
+   return &buffer->Base;
+}
+
+
+static void *
+buffer_map(struct pipe_winsys *pws, struct pipe_buffer *buf, unsigned flags)
+{
+   struct sw_pipe_buffer *buffer = sw_pipe_buffer(buf);
+   buffer->Mapped = buffer->Data;
+   return buffer->Mapped;
+}
+
+
+static void
+buffer_unmap(struct pipe_winsys *pws, struct pipe_buffer *buf)
+{
+   struct sw_pipe_buffer *buffer = sw_pipe_buffer(buf);
+   buffer->Mapped = NULL;
+}
+
+
+static void
+buffer_destroy(struct pipe_buffer *buf)
+{
+   struct sw_pipe_buffer *buffer = sw_pipe_buffer(buf);
+
+   if (buffer->Data && !buffer->UserBuffer) {
+      align_free(buffer->Data);
+      buffer->Data = NULL;
+   }
+
+   free(buffer);
+}
+
+
+static struct pipe_buffer *
+surface_buffer_create(struct pipe_winsys *winsys,
+                      unsigned width, unsigned height,
+                      enum pipe_format format, 
+                      unsigned usage,
+                      unsigned tex_usage,
+                      unsigned *stride)
+{
+   const unsigned alignment = 64;
+   unsigned nblocksy;
+
+   nblocksy = util_format_get_nblocksy(format, height);
+   *stride = align(util_format_get_stride(format, width), alignment);
+
+   return winsys->buffer_create(winsys, alignment,
+                                usage,
+                                *stride * nblocksy);
+}
+
+
+static void
+fence_reference(struct pipe_winsys *sws, struct pipe_fence_handle **ptr,
+                struct pipe_fence_handle *fence)
+{
+   /* no-op */
+}
+
+
+static int
+fence_signalled(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
+                unsigned flag)
+{
+   /* no-op */
+   return 0;
+}
+
+
+static int
+fence_finish(struct pipe_winsys *sws, struct pipe_fence_handle *fence,
+             unsigned flag)
+{
+   /* no-op */
+   return 0;
+}
+
+
+/**
+ * Create/return a new pipe_winsys object.
+ */
+struct pipe_winsys *
+create_sw_winsys(void)
+{
+   struct sw_pipe_winsys *ws = CALLOC_STRUCT(sw_pipe_winsys);
+   if (!ws)
+      return NULL;
+
+   /* Fill in this struct with callbacks that pipe will need to
+    * communicate with the window system, buffer manager, etc. 
+    */
+   ws->Base.buffer_create = buffer_create;
+   ws->Base.user_buffer_create = user_buffer_create;
+   ws->Base.buffer_map = buffer_map;
+   ws->Base.buffer_unmap = buffer_unmap;
+   ws->Base.buffer_destroy = buffer_destroy;
+
+   ws->Base.surface_buffer_create = surface_buffer_create;
+
+   ws->Base.fence_reference = fence_reference;
+   ws->Base.fence_signalled = fence_signalled;
+   ws->Base.fence_finish = fence_finish;
+
+   ws->Base.flush_frontbuffer = NULL; /* not implemented here! */
+
+   ws->Base.get_name = get_name;
+
+   return &ws->Base;
+}
diff --git a/src/gallium/state_trackers/egl/x11/sw_winsys.h b/src/gallium/state_trackers/egl/x11/sw_winsys.h
new file mode 100644
index 0000000000..f96c5a14b0
--- /dev/null
+++ b/src/gallium/state_trackers/egl/x11/sw_winsys.h
@@ -0,0 +1,40 @@
+/**************************************************************************
+ * 
+ * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sub license, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ * 
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
+ * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ **************************************************************************/
+
+
+#ifndef SW_WINSYS_H
+#define SW_WINSYS_H
+
+
+struct pipe_winsys;
+
+
+extern struct pipe_winsys *
+create_sw_winsys(void);
+
+
+#endif /* SW_WINSYS_H */
diff --git a/src/gallium/state_trackers/egl/x11/x11_screen.c b/src/gallium/state_trackers/egl/x11/x11_screen.c
new file mode 100644
index 0000000000..76ce45ee57
--- /dev/null
+++ b/src/gallium/state_trackers/egl/x11/x11_screen.c
@@ -0,0 +1,453 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.8
+ *
+ * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <X11/Xlibint.h>
+#include <X11/extensions/XShm.h>
+#include "util/u_memory.h"
+#include "util/u_math.h"
+#include "util/u_format.h"
+#include "xf86drm.h"
+#include "egllog.h"
+
+#include "x11_screen.h"
+#include "dri2.h"
+#include "glxinit.h"
+
+struct x11_screen {
+   Display *dpy;
+   int number;
+
+   /*
+    * This is used to fetch GLX visuals/fbconfigs.  It uses code from egl_xdri.
+    * It might be better to rewrite the part in Xlib or XCB.
+    */
+   __GLXdisplayPrivate *glx_dpy;
+
+   int dri_major, dri_minor;
+   char *dri_driver;
+   char *dri_device;
+   int dri_fd;
+
+   XVisualInfo *visuals;
+   int num_visuals;
+
+   /* cached values for x11_drawable_get_depth */
+   Drawable last_drawable;
+   unsigned int last_depth;
+};
+
+
+/**
+ * Create a X11 screen.
+ */
+struct x11_screen *
+x11_screen_create(Display *dpy, int screen)
+{
+   struct x11_screen *xscr;
+
+   if (screen >= ScreenCount(dpy))
+      return NULL;
+
+   xscr = CALLOC_STRUCT(x11_screen);
+   if (xscr) {
+      xscr->dpy = dpy;
+      xscr->number = screen;
+
+      xscr->dri_major = -1;
+      xscr->dri_fd = -1;
+   }
+   return xscr;
+}
+
+/**
+ * Destroy a X11 screen.
+ */
+void
+x11_screen_destroy(struct x11_screen *xscr)
+{
+   if (xscr->dri_fd >= 0)
+      close(xscr->dri_fd);
+   if (xscr->dri_driver)
+      Xfree(xscr->dri_driver);
+   if (xscr->dri_device)
+      Xfree(xscr->dri_device);
+
+   /* xscr->glx_dpy will be destroyed with the X display */
+
+   if (xscr->visuals)
+      XFree(xscr->visuals);
+   free(xscr);
+}
+
+static boolean
+x11_screen_init_dri2(struct x11_screen *xscr)
+{
+   if (xscr->dri_major < 0) {
+      int eventBase, errorBase;
+
+      if (!DRI2QueryExtension(xscr->dpy, &eventBase, &errorBase) ||
+          !DRI2QueryVersion(xscr->dpy, &xscr->dri_major, &xscr->dri_minor))
+         xscr->dri_major = -1;
+   }
+   return (xscr->dri_major >= 0);
+}
+
+static boolean
+x11_screen_init_glx(struct x11_screen *xscr)
+{
+   if (!xscr->glx_dpy)
+      xscr->glx_dpy = __glXInitialize(xscr->dpy);
+   return (xscr->glx_dpy != NULL);
+}
+
+/**
+ * Return true if the screen supports the extension.
+ */
+boolean
+x11_screen_support(struct x11_screen *xscr, enum x11_screen_extension ext)
+{
+   boolean supported = FALSE;
+
+   switch (ext) {
+   case X11_SCREEN_EXTENSION_XSHM:
+      supported = XShmQueryExtension(xscr->dpy);
+      break;
+   case X11_SCREEN_EXTENSION_GLX:
+      supported = x11_screen_init_glx(xscr);
+      break;
+   case X11_SCREEN_EXTENSION_DRI2:
+      supported = x11_screen_init_dri2(xscr);
+      break;
+   default:
+      break;
+   }
+
+   return supported;
+}
+
+/**
+ * Return the X visuals.
+ */
+const XVisualInfo *
+x11_screen_get_visuals(struct x11_screen *xscr, int *num_visuals)
+{
+   if (!xscr->visuals) {
+      XVisualInfo vinfo_template;
+      vinfo_template.screen = xscr->number;
+      xscr->visuals = XGetVisualInfo(xscr->dpy, VisualScreenMask,
+            &vinfo_template, &xscr->num_visuals);
+   }
+
+   if (num_visuals)
+      *num_visuals = xscr->num_visuals;
+   return xscr->visuals;
+}
+
+void
+x11_screen_convert_visual(struct x11_screen *xscr, const XVisualInfo *visual,
+                          __GLcontextModes *mode)
+{
+   int r, g, b, a;
+   int visual_type;
+
+   r = util_bitcount(visual->red_mask);
+   g = util_bitcount(visual->green_mask);
+   b = util_bitcount(visual->blue_mask);
+   a = visual->depth - (r + g + b);
+#if defined(__cplusplus) || defined(c_plusplus)
+   visual_type = visual->c_class;
+#else
+   visual_type = visual->class;
+#endif
+
+   /* convert to GLX visual type */
+   switch (visual_type) {
+   case TrueColor:
+      visual_type = GLX_TRUE_COLOR;
+      break;
+   case DirectColor:
+      visual_type = GLX_DIRECT_COLOR;
+      break;
+   case PseudoColor:
+      visual_type = GLX_PSEUDO_COLOR;
+      break;
+   case StaticColor:
+      visual_type = GLX_STATIC_COLOR;
+      break;
+   case GrayScale:
+      visual_type = GLX_GRAY_SCALE;
+      break;
+   case StaticGray:
+      visual_type = GLX_STATIC_GRAY;
+      break;
+   default:
+      visual_type = GLX_NONE;
+      break;
+   }
+
+   mode->rgbBits = r + g + b + a;
+   mode->redBits = r;
+   mode->greenBits = g;
+   mode->blueBits = b;
+   mode->alphaBits = a;
+   mode->visualID = visual->visualid;
+   mode->visualType = visual_type;
+
+   /* sane defaults */
+   mode->renderType = GLX_RGBA_BIT;
+   mode->rgbMode = TRUE;
+   mode->visualRating = GLX_SLOW_CONFIG;
+   mode->xRenderable = TRUE;
+}
+
+/**
+ * Return the GLX fbconfigs.
+ */
+const __GLcontextModes *
+x11_screen_get_glx_configs(struct x11_screen *xscr)
+{
+   return (x11_screen_init_glx(xscr))
+      ? xscr->glx_dpy->screenConfigs[xscr->number].configs
+      : NULL;
+}
+
+/**
+ * Return the GLX visuals.
+ */
+const __GLcontextModes *
+x11_screen_get_glx_visuals(struct x11_screen *xscr)
+{
+   return (x11_screen_init_glx(xscr))
+      ? xscr->glx_dpy->screenConfigs[xscr->number].visuals
+      : NULL;
+}
+
+static boolean
+x11_screen_is_driver_equal(struct x11_screen *xscr, const char *driver)
+{
+   return (strcmp(xscr->dri_driver, driver) == 0);
+}
+
+/**
+ * Probe the screen for the DRI2 driver name.
+ */
+const char *
+x11_screen_probe_dri2(struct x11_screen *xscr)
+{
+   /* get the driver name and the device name */
+   if (!xscr->dri_driver) {
+      if (!DRI2Connect(xscr->dpy, RootWindow(xscr->dpy, xscr->number),
+               &xscr->dri_driver, &xscr->dri_device))
+         xscr->dri_driver = xscr->dri_device = NULL;
+   }
+
+   return xscr->dri_driver;
+}
+
+/**
+ * Enable DRI2 and returns the file descriptor of the DRM device.  The file
+ * descriptor will be closed automatically when the screen is destoryed.
+ */
+int
+x11_screen_enable_dri2(struct x11_screen *xscr, const char *driver)
+{
+   if (xscr->dri_fd < 0) {
+      int fd;
+      drm_magic_t magic;
+
+      /* get the driver name and the device name first */
+      if (!x11_screen_probe_dri2(xscr))
+         return -1;
+
+      if (!x11_screen_is_driver_equal(xscr, driver)) {
+         _eglLog(_EGL_WARNING, "Driver mismatch: %s != %s",
+               xscr->dri_driver, driver);
+         return -1;
+      }
+
+      fd = open(xscr->dri_device, O_RDWR);
+      if (fd < 0) {
+         _eglLog(_EGL_WARNING, "failed to open %s", xscr->dri_device);
+         return -1;
+      }
+
+      memset(&magic, 0, sizeof(magic));
+      if (drmGetMagic(fd, &magic)) {
+         _eglLog(_EGL_WARNING, "failed to get magic");
+         close(fd);
+         return -1;
+      }
+
+      if (!DRI2Authenticate(xscr->dpy,
+               RootWindow(xscr->dpy, xscr->number), magic)) {
+         _eglLog(_EGL_WARNING, "failed to authenticate magic");
+         close(fd);
+         return -1;
+      }
+
+      xscr->dri_fd = fd;
+   }
+
+   return xscr->dri_fd;
+}
+
+/**
+ * Create/Destroy the DRI drawable.
+ */
+void
+x11_drawable_enable_dri2(struct x11_screen *xscr,
+                         Drawable drawable, boolean on)
+{
+   if (on)
+      DRI2CreateDrawable(xscr->dpy, drawable);
+   else
+      DRI2DestroyDrawable(xscr->dpy, drawable);
+}
+
+/**
+ * Copy between buffers of the DRI2 drawable.
+ */
+void
+x11_drawable_copy_buffers(struct x11_screen *xscr, Drawable drawable,
+                          int x, int y, int width, int height,
+                          int src_buf, int dst_buf)
+{
+   XRectangle rect;
+   XserverRegion region;
+
+   rect.x = x;
+   rect.y = y;
+   rect.width = width;
+   rect.height = height;
+
+   region = XFixesCreateRegion(xscr->dpy, &rect, 1);
+   DRI2CopyRegion(xscr->dpy, drawable, region, dst_buf, src_buf);
+   XFixesDestroyRegion(xscr->dpy, region);
+}
+
+/**
+ * Get the buffers of the DRI2 drawable.  The returned array should be freed.
+ */
+struct x11_drawable_buffer *
+x11_drawable_get_buffers(struct x11_screen *xscr, Drawable drawable,
+                         int *width, int *height, unsigned int *attachments,
+                         boolean with_format, int num_ins, int *num_outs)
+{
+   DRI2Buffer *dri2bufs;
+
+   if (with_format)
+      dri2bufs = DRI2GetBuffersWithFormat(xscr->dpy, drawable, width, height,
+            attachments, num_ins, num_outs);
+   else
+      dri2bufs = DRI2GetBuffers(xscr->dpy, drawable, width, height,
+            attachments, num_ins, num_outs);
+
+   return (struct x11_drawable_buffer *) dri2bufs;
+}
+
+/**
+ * Return the depth of a drawable.
+ *
+ * Unlike other drawable functions, the drawable needs not be a DRI2 drawable.
+ */
+uint
+x11_drawable_get_depth(struct x11_screen *xscr, Drawable drawable)
+{
+   unsigned int depth;
+
+   if (drawable != xscr->last_drawable) {
+      Window root;
+      int x, y;
+      unsigned int w, h, border;
+      Status ok;
+
+      ok = XGetGeometry(xscr->dpy, drawable, &root,
+            &x, &y, &w, &h, &border, &depth);
+      if (!ok)
+         depth = 0;
+
+      xscr->last_drawable = drawable;
+      xscr->last_depth = depth;
+   }
+   else {
+      depth = xscr->last_depth;
+   }
+
+   return depth;
+}
+
+/**
+ * Create a mode list of the given size.
+ */
+__GLcontextModes *
+x11_context_modes_create(unsigned count)
+{
+   const size_t size = sizeof(__GLcontextModes);
+   __GLcontextModes *base = NULL;
+   __GLcontextModes **next;
+   unsigned i;
+
+   next = &base;
+   for (i = 0; i < count; i++) {
+      *next = (__GLcontextModes *) calloc(1, size);
+      if (*next == NULL) {
+         x11_context_modes_destroy(base);
+         base = NULL;
+         break;
+      }
+      next = &((*next)->next);
+   }
+
+   return base;
+}
+
+/**
+ * Destroy a mode list.
+ */
+void
+x11_context_modes_destroy(__GLcontextModes *modes)
+{
+   while (modes != NULL) {
+      __GLcontextModes *next = modes->next;
+      free(modes);
+      modes = next;
+   }
+}
+
+/**
+ * Return the number of the modes in the mode list.
+ */
+unsigned
+x11_context_modes_count(const __GLcontextModes *modes)
+{
+   const __GLcontextModes *mode;
+   int count = 0;
+   for (mode = modes; mode; mode = mode->next)
+      count++;
+   return count;
+}
diff --git a/src/gallium/state_trackers/egl/x11/x11_screen.h b/src/gallium/state_trackers/egl/x11/x11_screen.h
new file mode 100644
index 0000000000..5432858ac3
--- /dev/null
+++ b/src/gallium/state_trackers/egl/x11/x11_screen.h
@@ -0,0 +1,105 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.8
+ *
+ * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _X11_SCREEN_H_
+#define _X11_SCREEN_H_
+
+#include <X11/Xlib.h>
+#include <X11/Xutil.h>
+#include <X11/extensions/dri2tokens.h>
+#include "pipe/p_compiler.h"
+#include "common/native.h"
+
+enum x11_screen_extension {
+   X11_SCREEN_EXTENSION_XSHM,
+   X11_SCREEN_EXTENSION_GLX,
+   X11_SCREEN_EXTENSION_DRI2,
+};
+
+/* the same as DRI2Buffer */
+struct x11_drawable_buffer {
+   unsigned int attachment;
+   unsigned int name;
+   unsigned int pitch;
+   unsigned int cpp;
+   unsigned int flags;
+};
+
+struct x11_screen;
+
+struct x11_screen *
+x11_screen_create(Display *dpy, int screen);
+
+void
+x11_screen_destroy(struct x11_screen *xscr);
+
+boolean
+x11_screen_support(struct x11_screen *xscr, enum x11_screen_extension ext);
+
+const XVisualInfo *
+x11_screen_get_visuals(struct x11_screen *xscr, int *num_visuals);
+
+void
+x11_screen_convert_visual(struct x11_screen *xscr, const XVisualInfo *visual,
+                          __GLcontextModes *mode);
+
+const __GLcontextModes *
+x11_screen_get_glx_configs(struct x11_screen *xscr);
+
+const __GLcontextModes *
+x11_screen_get_glx_visuals(struct x11_screen *xscr);
+
+const char *
+x11_screen_probe_dri2(struct x11_screen *xscr);
+
+int
+x11_screen_enable_dri2(struct x11_screen *xscr, const char *driver);
+
+__GLcontextModes *
+x11_context_modes_create(unsigned count);
+
+void
+x11_context_modes_destroy(__GLcontextModes *modes);
+
+unsigned
+x11_context_modes_count(const __GLcontextModes *modes);
+
+void
+x11_drawable_enable_dri2(struct x11_screen *xscr,
+                         Drawable drawable, boolean on);
+
+void
+x11_drawable_copy_buffers(struct x11_screen *xscr, Drawable drawable,
+                          int x, int y, int width, int height,
+                          int src_buf, int dst_buf);
+
+struct x11_drawable_buffer *
+x11_drawable_get_buffers(struct x11_screen *xscr, Drawable drawable,
+                         int *width, int *height, unsigned int *attachments,
+                         boolean with_format, int num_ins, int *num_outs);
+
+uint
+x11_drawable_get_depth(struct x11_screen *xscr, Drawable drawable);
+
+#endif /* _X11_SCREEN_H_ */