gallium: Reorg winsys directories

Attached output from commit.
 delete mode 100644 src/gallium/winsys/drm/SConscript
 delete mode 100644 src/gallium/winsys/drm/i965/SConscript
 delete mode 100644 src/gallium/winsys/drm/intel/Makefile
 delete mode 100644 src/gallium/winsys/drm/intel/SConscript
 delete mode 100644 src/gallium/winsys/drm/nouveau/Makefile
 delete mode 100644 src/gallium/winsys/drm/radeon/Makefile
 delete mode 100644 src/gallium/winsys/drm/radeon/SConscript
 delete mode 100644 src/gallium/winsys/drm/vmware/Makefile
 delete mode 100644 src/gallium/winsys/drm/vmware/SConscript
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/Makefile (82%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/SConscript (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_api.c (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_batchbuffer.c (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_buffer.c (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_fence.c (100%)
 rename src/gallium/winsys/{drm/intel/gem => i915/drm}/intel_drm_winsys.h (100%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/Makefile (78%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/SConscript (100%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/i965_drm_api.c (98%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/i965_drm_buffer.c (100%)
 rename src/gallium/winsys/{drm/i965/gem => i965/drm}/i965_drm_winsys.h (100%)
 rename src/gallium/winsys/{drm => }/i965/xlib/Makefile (97%)
 rename src/gallium/winsys/{drm => }/i965/xlib/xlib_i965.c (100%)
 rename src/gallium/winsys/{drm => }/nouveau/drm/Makefile (79%)
 rename src/gallium/winsys/{drm => }/nouveau/drm/nouveau_dri.h (100%)
 rename src/gallium/winsys/{drm => }/nouveau/drm/nouveau_drm_api.c (100%)
 rename src/gallium/winsys/{drm => }/nouveau/drm/nouveau_drm_api.h (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/Makefile (79%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/SConscript (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_buffer.h (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_drm.c (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_drm.h (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_drm_buffer.c (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_r300.c (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_r300.h (100%)
 rename src/gallium/winsys/{drm/radeon/core => radeon/drm}/radeon_winsys.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/Makefile (63%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/SConscript (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_buffer.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_buffer.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_context.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_context.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_fence.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_fence.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen_dri.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen_ioctl.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen_pools.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_screen_svga.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_surface.c (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmw_surface.h (100%)
 rename src/gallium/winsys/{drm/vmware/core => svga/drm}/vmwgfx_drm.h (100%)
 rename src/gallium/winsys/{drm/i965 => sw}/Makefile (61%)
 copy src/gallium/winsys/{drm/sw => sw/drm}/Makefile (73%)
 rename src/gallium/winsys/{drm/sw => sw/drm}/sw_drm_api.c (98%)
 rename src/gallium/winsys/{drm/sw => sw/drm}/sw_drm_api.h (100%)
 rename src/gallium/winsys/{ => sw}/gdi/SConscript (100%)
 rename src/gallium/winsys/{ => sw}/gdi/gdi_sw_winsys.c (100%)
 rename src/gallium/winsys/{ => sw}/gdi/gdi_sw_winsys.h (100%)
 rename src/gallium/winsys/{ => sw}/null/Makefile (78%)
 rename src/gallium/winsys/{ => sw}/null/SConscript (100%)
 rename src/gallium/winsys/{ => sw}/null/null_sw_winsys.c (100%)
 rename src/gallium/winsys/{ => sw}/null/null_sw_winsys.h (100%)
 rename src/gallium/winsys/{drm/sw => sw/wrapper}/Makefile (65%)
 rename src/gallium/winsys/{drm/sw => sw/wrapper}/wrapper_sw_winsys.c (100%)
 rename src/gallium/winsys/{drm/sw => sw/wrapper}/wrapper_sw_winsys.h (100%)
 rename src/gallium/winsys/{ => sw}/xlib/Makefile (79%)
 rename src/gallium/winsys/{ => sw}/xlib/SConscript (100%)
 rename src/gallium/winsys/{ => sw}/xlib/xlib_sw_winsys.c (100%)

17 files changed, 1499 insertions, 0 deletions

diff --git a/src/gallium/winsys/sw/Makefile b/src/gallium/winsys/sw/Makefile
new file mode 100644
index 0000000000..e9182ea5b1
--- /dev/null
+++ b/src/gallium/winsys/sw/Makefile
@@ -0,0 +1,12 @@
+# src/gallium/winsys/sw/Makefile
+TOP = ../../../..
+include $(TOP)/configs/current
+
+SUBDIRS = null wrapper
+
+default install clean:
+	@for dir in $(SUBDIRS) ; do \
+		if [ -d $$dir ] ; then \
+			(cd $$dir && $(MAKE) $@) || exit 1; \
+		fi \
+	done
diff --git a/src/gallium/winsys/sw/drm/Makefile b/src/gallium/winsys/sw/drm/Makefile
new file mode 100644
index 0000000000..79664536aa
--- /dev/null
+++ b/src/gallium/winsys/sw/drm/Makefile
@@ -0,0 +1,12 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = swdrm
+
+C_SOURCES = sw_drm_api.c
+
+LIBRARY_INCLUDES =
+
+LIBRARY_DEFINES =
+
+include ../../../Makefile.template
diff --git a/src/gallium/winsys/sw/drm/sw_drm_api.c b/src/gallium/winsys/sw/drm/sw_drm_api.c
new file mode 100644
index 0000000000..eb81d26a59
--- /dev/null
+++ b/src/gallium/winsys/sw/drm/sw_drm_api.c
@@ -0,0 +1,97 @@
+/**********************************************************
+ * Copyright 2010 VMware, Inc.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * 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 "softpipe/sp_public.h"
+#include "state_tracker/drm_api.h"
+#include "../../sw/wrapper/wrapper_sw_winsys.h"
+#include "sw_drm_api.h"
+
+
+/*
+ * Defines
+ */
+
+
+struct sw_drm_api
+{
+   struct drm_api base;
+   struct drm_api *api;
+   struct sw_winsys *sw;
+};
+
+static INLINE struct sw_drm_api *
+sw_drm_api(struct drm_api *api)
+{
+   return (struct sw_drm_api *)api;
+}
+
+
+/*
+ * Exported functions
+ */
+
+
+static struct pipe_screen *
+sw_drm_create_screen(struct drm_api *_api, int drmFD,
+                     struct drm_create_screen_arg *arg)
+{
+   struct sw_drm_api *swapi = sw_drm_api(_api);
+   struct drm_api *api = swapi->api;
+   struct sw_winsys *sww;
+   struct pipe_screen *screen;
+
+   screen = api->create_screen(api, drmFD, arg);
+
+   sww = wrapper_sw_winsys_warp_pipe_screen(screen);
+
+   return softpipe_create_screen(sww);
+}
+
+static void
+sw_drm_destroy(struct drm_api *api)
+{
+   struct sw_drm_api *swapi = sw_drm_api(api);
+   if (swapi->api->destroy)
+      swapi->api->destroy(swapi->api);
+
+   FREE(swapi);
+}
+
+struct drm_api *
+sw_drm_api_create(struct drm_api *api)
+{
+   struct sw_drm_api *swapi = CALLOC_STRUCT(sw_drm_api);
+
+   swapi->base.name = "sw";
+   swapi->base.driver_name = api->driver_name;
+   swapi->base.create_screen = sw_drm_create_screen;
+   swapi->base.destroy = sw_drm_destroy;
+
+   swapi->api = api;
+
+   return &swapi->base;
+}
diff --git a/src/gallium/winsys/sw/drm/sw_drm_api.h b/src/gallium/winsys/sw/drm/sw_drm_api.h
new file mode 100644
index 0000000000..ce90a04ae0
--- /dev/null
+++ b/src/gallium/winsys/sw/drm/sw_drm_api.h
@@ -0,0 +1,34 @@
+/**********************************************************
+ * Copyright 2010 VMware, Inc.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * 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_DRM_API_H
+#define SW_DRM_API_H
+
+struct drm_api;
+
+struct drm_api * sw_drm_api_create(struct drm_api *api);
+
+#endif
diff --git a/src/gallium/winsys/sw/gdi/SConscript b/src/gallium/winsys/sw/gdi/SConscript
new file mode 100644
index 0000000000..1267fc6eea
--- /dev/null
+++ b/src/gallium/winsys/sw/gdi/SConscript
@@ -0,0 +1,23 @@
+#######################################################################
+# SConscript for xlib winsys
+
+
+Import('*')
+
+if env['platform'] == 'windows':
+
+    env = env.Clone()
+
+    env.Append(CPPPATH = [
+        '#/src/gallium/include',
+        '#/src/gallium/auxiliary',
+        '#/src/gallium/drivers',
+    ])
+
+    ws_gdi = env.ConvenienceLibrary(
+        target = 'ws_gdi',
+        source = [
+           'gdi_sw_winsys.c',
+        ]
+    )
+    Export('ws_gdi')
diff --git a/src/gallium/winsys/sw/gdi/gdi_sw_winsys.c b/src/gallium/winsys/sw/gdi/gdi_sw_winsys.c
new file mode 100644
index 0000000000..4dba4b577b
--- /dev/null
+++ b/src/gallium/winsys/sw/gdi/gdi_sw_winsys.c
@@ -0,0 +1,247 @@
+/**************************************************************************
+ *
+ * Copyright 2009 VMware, Inc.
+ * 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 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ *
+ **************************************************************************/
+
+/**
+ * @file
+ * GDI software rasterizer support.
+ *
+ * @author Jose Fonseca <jfonseca@vmware.com>
+ */
+
+
+#include <windows.h>
+
+#include "pipe/p_format.h"
+#include "pipe/p_context.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+#include "state_tracker/sw_winsys.h"
+#include "gdi_sw_winsys.h"
+
+
+struct gdi_sw_displaytarget
+{
+   enum pipe_format format;
+   unsigned width;
+   unsigned height;
+   unsigned stride;
+
+   unsigned size;
+
+   void *data;
+
+   BITMAPINFO bmi;
+};
+
+
+/** Cast wrapper */
+static INLINE struct gdi_sw_displaytarget *
+gdi_sw_displaytarget( struct sw_displaytarget *buf )
+{
+   return (struct gdi_sw_displaytarget *)buf;
+}
+
+
+static boolean
+gdi_sw_is_displaytarget_format_supported( struct sw_winsys *ws,
+                                                unsigned tex_usage,
+                                                enum pipe_format format )
+{
+   switch(format) {
+   case PIPE_FORMAT_B8G8R8X8_UNORM:
+   case PIPE_FORMAT_B8G8R8A8_UNORM:
+      return TRUE;
+
+   /* TODO: Support other formats possible with BMPs, as described in 
+    * http://msdn.microsoft.com/en-us/library/dd183376(VS.85).aspx */
+      
+   default:
+      return FALSE;
+   }
+}
+
+
+static void *
+gdi_sw_displaytarget_map(struct sw_winsys *ws,
+                               struct sw_displaytarget *dt,
+                               unsigned flags )
+{
+   struct gdi_sw_displaytarget *gdt = gdi_sw_displaytarget(dt);
+
+   return gdt->data;
+}
+
+
+static void
+gdi_sw_displaytarget_unmap(struct sw_winsys *ws,
+                                 struct sw_displaytarget *dt )
+{
+
+}
+
+
+static void
+gdi_sw_displaytarget_destroy(struct sw_winsys *winsys,
+                                   struct sw_displaytarget *dt)
+{
+   struct gdi_sw_displaytarget *gdt = gdi_sw_displaytarget(dt);
+
+   align_free(gdt->data);
+   FREE(gdt);
+}
+
+
+static struct sw_displaytarget *
+gdi_sw_displaytarget_create(struct sw_winsys *winsys,
+                                  unsigned tex_usage,
+                                  enum pipe_format format,
+                                  unsigned width, unsigned height,
+                                  unsigned alignment,
+                                  unsigned *stride)
+{
+   struct gdi_sw_displaytarget *gdt;
+   unsigned cpp;
+   unsigned bpp;
+   
+   gdt = CALLOC_STRUCT(gdi_sw_displaytarget);
+   if(!gdt)
+      goto no_gdt;
+
+   gdt->format = format;
+   gdt->width = width;
+   gdt->height = height;
+
+   bpp = util_format_get_blocksizebits(format);
+   cpp = util_format_get_blocksize(format);
+   
+   gdt->stride = align(width * cpp, alignment);
+   gdt->size = gdt->stride * height;
+   
+   gdt->data = align_malloc(gdt->size, alignment);
+   if(!gdt->data)
+      goto no_data;
+
+   gdt->bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
+   gdt->bmi.bmiHeader.biWidth = gdt->stride / cpp;
+   gdt->bmi.bmiHeader.biHeight= -(long)height;
+   gdt->bmi.bmiHeader.biPlanes = 1;
+   gdt->bmi.bmiHeader.biBitCount = bpp;
+   gdt->bmi.bmiHeader.biCompression = BI_RGB;
+   gdt->bmi.bmiHeader.biSizeImage = 0;
+   gdt->bmi.bmiHeader.biXPelsPerMeter = 0;
+   gdt->bmi.bmiHeader.biYPelsPerMeter = 0;
+   gdt->bmi.bmiHeader.biClrUsed = 0;
+   gdt->bmi.bmiHeader.biClrImportant = 0;
+
+   *stride = gdt->stride;
+   return (struct sw_displaytarget *)gdt;
+
+no_data:
+   FREE(gdt);
+no_gdt:
+   return NULL;
+}
+
+
+static struct sw_displaytarget *
+gdi_sw_displaytarget_from_handle(struct sw_winsys *winsys,
+                                 const struct pipe_texture *templet,
+                                 struct winsys_handle *whandle,
+                                 unsigned *stride)
+{
+   assert(0);
+   return NULL;
+}
+
+
+static boolean
+gdi_sw_displaytarget_get_handle(struct sw_winsys *winsys,
+                                struct sw_displaytarget *dt,
+                                struct winsys_handle *whandle)
+{
+   assert(0);
+   return FALSE;
+}
+
+
+void
+gdi_sw_display( struct sw_winsys *winsys,
+                struct sw_displaytarget *dt,
+                HDC hDC )
+{
+    struct gdi_sw_displaytarget *gdt = gdi_sw_displaytarget(dt);
+
+    StretchDIBits(hDC,
+                  0, 0, gdt->width, gdt->height,
+                  0, 0, gdt->width, gdt->height,
+                  gdt->data, &gdt->bmi, 0, SRCCOPY);
+}
+
+static void
+gdi_sw_displaytarget_display(struct sw_winsys *winsys, 
+                             struct sw_displaytarget *dt,
+                             void *context_private)
+{
+    /* nasty:
+     */
+    HDC hDC = (HDC)context_private;
+
+    gdi_sw_display(winsys, dt, hDC);
+}
+
+
+static void
+gdi_sw_destroy(struct sw_winsys *winsys)
+{
+   FREE(winsys);
+}
+
+struct sw_winsys *
+gdi_create_sw_winsys(void)
+{
+   static struct sw_winsys *winsys;
+
+   winsys = CALLOC_STRUCT(sw_winsys);
+   if(!winsys)
+      return NULL;
+
+   winsys->destroy = gdi_sw_destroy;
+   winsys->is_displaytarget_format_supported = gdi_sw_is_displaytarget_format_supported;
+   winsys->displaytarget_create = gdi_sw_displaytarget_create;
+   winsys->displaytarget_from_handle = gdi_sw_displaytarget_from_handle;
+   winsys->displaytarget_get_handle = gdi_sw_displaytarget_get_handle;
+   winsys->displaytarget_map = gdi_sw_displaytarget_map;
+   winsys->displaytarget_unmap = gdi_sw_displaytarget_unmap;
+   winsys->displaytarget_display = gdi_sw_displaytarget_display;
+   winsys->displaytarget_destroy = gdi_sw_displaytarget_destroy;
+
+   return winsys;
+}
+
diff --git a/src/gallium/winsys/sw/gdi/gdi_sw_winsys.h b/src/gallium/winsys/sw/gdi/gdi_sw_winsys.h
new file mode 100644
index 0000000000..4bbcb47848
--- /dev/null
+++ b/src/gallium/winsys/sw/gdi/gdi_sw_winsys.h
@@ -0,0 +1,16 @@
+#ifndef GDI_SW_WINSYS_H
+#define GDI_SW_WINSYS_H
+
+#include <windows.h>
+
+#include "pipe/p_compiler.h"
+#include "state_tracker/sw_winsys.h"
+
+void gdi_sw_display( struct sw_winsys *winsys,
+                     struct sw_displaytarget *dt,
+                     HDC hDC );
+
+struct sw_winsys *
+gdi_create_sw_winsys(void);
+
+#endif
diff --git a/src/gallium/winsys/sw/null/Makefile b/src/gallium/winsys/sw/null/Makefile
new file mode 100644
index 0000000000..b1882b582e
--- /dev/null
+++ b/src/gallium/winsys/sw/null/Makefile
@@ -0,0 +1,16 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = ws_null
+
+LIBRARY_INCLUDES = \
+	-I$(TOP)/src/gallium/include \
+	-I$(TOP)/src/gallium/drivers \
+	-I$(TOP)/src/gallium/auxiliary
+
+C_SOURCES = \
+	null_sw_winsys.c 
+
+include ../../../Makefile.template
+
+
diff --git a/src/gallium/winsys/sw/null/SConscript b/src/gallium/winsys/sw/null/SConscript
new file mode 100644
index 0000000000..21837dc60c
--- /dev/null
+++ b/src/gallium/winsys/sw/null/SConscript
@@ -0,0 +1,21 @@
+#######################################################################
+# SConscript for xlib winsys
+
+
+Import('*')
+
+env = env.Clone()
+
+env.Append(CPPPATH = [
+    '#/src/gallium/include',
+    '#/src/gallium/auxiliary',
+    '#/src/gallium/drivers',
+])
+
+ws_null = env.ConvenienceLibrary(
+    target = 'ws_null',
+    source = [
+       'null_sw_winsys.c',
+    ]
+)
+Export('ws_null')
diff --git a/src/gallium/winsys/sw/null/null_sw_winsys.c b/src/gallium/winsys/sw/null/null_sw_winsys.c
new file mode 100644
index 0000000000..5027e57b30
--- /dev/null
+++ b/src/gallium/winsys/sw/null/null_sw_winsys.c
@@ -0,0 +1,148 @@
+/**************************************************************************
+ * 
+ * Copyright 2010 VMware, Inc.
+ * 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 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ **************************************************************************/
+
+/**
+ * @file
+ * Null software rasterizer winsys.
+ * 
+ * There is no present support. Framebuffer data needs to be obtained via
+ * transfers.
+ *
+ * @author Jose Fonseca
+ */
+
+
+#include "pipe/p_format.h"
+#include "util/u_memory.h"
+#include "state_tracker/sw_winsys.h"
+#include "null_sw_winsys.h"
+
+
+static boolean
+null_sw_is_displaytarget_format_supported(struct sw_winsys *ws,
+                                          unsigned tex_usage,
+                                          enum pipe_format format )
+{
+   return FALSE;
+}
+
+
+static void *
+null_sw_displaytarget_map(struct sw_winsys *ws,
+                          struct sw_displaytarget *dt,
+                          unsigned flags )
+{
+   assert(0);
+   return NULL;
+}
+
+
+static void
+null_sw_displaytarget_unmap(struct sw_winsys *ws,
+                            struct sw_displaytarget *dt )
+{
+   assert(0);
+}
+
+
+static void
+null_sw_displaytarget_destroy(struct sw_winsys *winsys,
+                              struct sw_displaytarget *dt)
+{
+   assert(0);
+}
+
+
+static struct sw_displaytarget *
+null_sw_displaytarget_create(struct sw_winsys *winsys,
+                             unsigned tex_usage,
+                             enum pipe_format format,
+                             unsigned width, unsigned height,
+                             unsigned alignment,
+                             unsigned *stride)
+{
+   return NULL;
+}
+
+
+static struct sw_displaytarget *
+null_sw_displaytarget_from_handle(struct sw_winsys *winsys,
+                                  const struct pipe_texture *templet,
+                                  struct winsys_handle *whandle,
+                                  unsigned *stride)
+{
+   return NULL;
+}
+
+
+static boolean
+null_sw_displaytarget_get_handle(struct sw_winsys *winsys,
+                                 struct sw_displaytarget *dt,
+                                 struct winsys_handle *whandle)
+{
+   assert(0);
+   return FALSE;
+}
+
+
+static void
+null_sw_displaytarget_display(struct sw_winsys *winsys,
+                              struct sw_displaytarget *dt,
+                              void *context_private)
+{
+   assert(0);
+}
+
+
+static void
+null_sw_destroy(struct sw_winsys *winsys)
+{
+   FREE(winsys);
+}
+
+
+struct sw_winsys *
+null_sw_create(void)
+{
+   static struct sw_winsys *winsys;
+
+   winsys = CALLOC_STRUCT(sw_winsys);
+   if (!winsys)
+      return NULL;
+
+   winsys->destroy = null_sw_destroy;
+   winsys->is_displaytarget_format_supported = null_sw_is_displaytarget_format_supported;
+   winsys->displaytarget_create = null_sw_displaytarget_create;
+   winsys->displaytarget_from_handle = null_sw_displaytarget_from_handle;
+   winsys->displaytarget_get_handle = null_sw_displaytarget_get_handle;
+   winsys->displaytarget_map = null_sw_displaytarget_map;
+   winsys->displaytarget_unmap = null_sw_displaytarget_unmap;
+   winsys->displaytarget_display = null_sw_displaytarget_display;
+   winsys->displaytarget_destroy = null_sw_displaytarget_destroy;
+
+   return winsys;
+}
diff --git a/src/gallium/winsys/sw/null/null_sw_winsys.h b/src/gallium/winsys/sw/null/null_sw_winsys.h
new file mode 100644
index 0000000000..1986186feb
--- /dev/null
+++ b/src/gallium/winsys/sw/null/null_sw_winsys.h
@@ -0,0 +1,40 @@
+/**************************************************************************
+ *
+ * Copyright 2010 VMware, Inc.
+ * 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 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ *
+ **************************************************************************/
+
+
+#ifndef NULL_SW_WINSYS_H_
+#define NULL_SW_WINSYS_H_
+
+
+struct sw_winsys;
+
+
+struct sw_winsys *
+null_sw_create(void);
+
+
+#endif /* NULL_SW_WINSYS_H_ */
diff --git a/src/gallium/winsys/sw/wrapper/Makefile b/src/gallium/winsys/sw/wrapper/Makefile
new file mode 100644
index 0000000000..4771fbcf70
--- /dev/null
+++ b/src/gallium/winsys/sw/wrapper/Makefile
@@ -0,0 +1,12 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = wsw
+
+C_SOURCES = wrapper_sw_winsys.c
+
+LIBRARY_INCLUDES =
+
+LIBRARY_DEFINES =
+
+include ../../../Makefile.template
diff --git a/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.c b/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.c
new file mode 100644
index 0000000000..459b1c1e2a
--- /dev/null
+++ b/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.c
@@ -0,0 +1,282 @@
+/**********************************************************
+ * Copyright 2010 VMware, Inc.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * 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 "wrapper_sw_winsys.h"
+
+#include "pipe/p_format.h"
+#include "pipe/p_state.h"
+
+#include "state_tracker/sw_winsys.h"
+
+#include "util/u_memory.h"
+#include "util/u_inlines.h"
+
+/*
+ * This code wraps a pipe_screen and exposes a sw_winsys interface for use
+ * with software resterizers. This code is used by the DRM based winsys to
+ * allow access to the drm driver.
+ *
+ * We must borrow the whole stack because only the pipe screen knows how
+ * to decode the content of a buffer. Or how to create a buffer that
+ * can still be used by drivers using real hardware (as the case is
+ * with software st/xorg but hw st/dri).
+ *
+ * We also need a pipe context for the transfers.
+ */
+
+struct wrapper_sw_winsys
+{
+   struct sw_winsys base;
+   struct pipe_screen *screen;
+   struct pipe_context *pipe;
+};
+
+struct wrapper_sw_displaytarget
+{
+   struct wrapper_sw_winsys *winsys;
+   struct pipe_texture *tex;
+   struct pipe_transfer *transfer;
+
+   unsigned width;
+   unsigned height;
+   unsigned map_count;
+   unsigned stride; /**< because we give stride at create */
+   void *ptr;
+};
+
+static INLINE struct wrapper_sw_winsys *
+wrapper_sw_winsys(struct sw_winsys *ws)
+{
+   return (struct wrapper_sw_winsys *)ws;
+}
+
+static INLINE struct wrapper_sw_displaytarget *
+wrapper_sw_displaytarget(struct sw_displaytarget *dt)
+{
+   return (struct wrapper_sw_displaytarget *)dt;
+}
+
+
+/*
+ * Functions
+ */
+
+
+static boolean
+wsw_dt_get_stride(struct wrapper_sw_displaytarget *wdt, unsigned *stride)
+{
+   struct pipe_context *pipe = wdt->winsys->pipe;
+   struct pipe_texture *tex = wdt->tex;
+   struct pipe_transfer *tr;
+
+   tr = pipe->get_tex_transfer(pipe, tex, 0, 0, 0,
+                               PIPE_TRANSFER_READ_WRITE,
+                               0, 0, wdt->width, wdt->height);
+   if (!tr)
+      return FALSE;
+
+   *stride = tr->stride;
+   wdt->stride = tr->stride;
+
+   pipe->tex_transfer_destroy(pipe, tr);
+
+   return TRUE;
+}
+
+static struct sw_displaytarget *
+wsw_dt_wrap_texture(struct wrapper_sw_winsys *wsw,
+                    struct pipe_texture *tex, unsigned *stride)
+{
+   struct wrapper_sw_displaytarget *wdt = CALLOC_STRUCT(wrapper_sw_displaytarget);
+   if (!wdt)
+      goto err_unref;
+
+   wdt->tex = tex;
+   wdt->winsys = wsw;
+
+   if (!wsw_dt_get_stride(wdt, stride))
+      goto err_free;
+
+   return (struct sw_displaytarget *)wdt;
+
+err_free:
+   FREE(wdt);
+err_unref:
+   pipe_texture_reference(&tex, NULL);
+   return NULL;
+}
+
+static struct sw_displaytarget *
+wsw_dt_create(struct sw_winsys *ws,
+              unsigned tex_usage,
+              enum pipe_format format,
+              unsigned width, unsigned height,
+              unsigned alignment,
+              unsigned *stride)
+{
+   struct wrapper_sw_winsys *wsw = wrapper_sw_winsys(ws);
+   struct pipe_texture templ;
+   struct pipe_texture *tex;
+
+   /*
+    * XXX Why don't we just get the template.
+    */
+   memset(&templ, 0, sizeof(templ));
+   templ.width0 = width;
+   templ.height0 = height;
+   templ.format = format;
+   templ.tex_usage = tex_usage;
+
+   /* XXX alignment: we can't do anything about this */
+
+   tex = wsw->screen->texture_create(wsw->screen, &templ);
+   if (!tex)
+      return NULL;
+
+   return wsw_dt_wrap_texture(wsw, tex, stride);
+}
+
+static struct sw_displaytarget *
+wsw_dt_from_handle(struct sw_winsys *ws,
+                   const struct pipe_texture *templ,
+                   struct winsys_handle *whandle,
+                   unsigned *stride)
+{
+   struct wrapper_sw_winsys *wsw = wrapper_sw_winsys(ws);
+   struct pipe_texture *tex;
+
+   tex = wsw->screen->texture_from_handle(wsw->screen, templ, whandle);
+   if (!tex)
+      return NULL;
+
+   return wsw_dt_wrap_texture(wsw, tex, stride);
+}
+
+static void *
+wsw_dt_map(struct sw_winsys *ws,
+           struct sw_displaytarget *dt,
+           unsigned flags)
+{
+   struct wrapper_sw_displaytarget *wdt = wrapper_sw_displaytarget(dt);
+   struct pipe_context *pipe = wdt->winsys->pipe;
+   struct pipe_texture *tex = wdt->tex;
+   struct pipe_transfer *tr;
+   void *ptr;
+
+   if (!wdt->map_count) {
+
+      assert(!wdt->transfer);
+
+      tr = pipe->get_tex_transfer(pipe, tex, 0, 0, 0,
+                                  PIPE_TRANSFER_READ_WRITE,
+                                  0, 0, wdt->width, wdt->height);
+      if (!tr)
+         return NULL;
+
+      ptr = pipe->transfer_map(pipe, tr);
+      if (!ptr)
+        goto err;
+
+      wdt->transfer = tr;
+      wdt->ptr = ptr;
+
+      /* XXX Handle this case */
+      assert(tr->stride == wdt->stride);
+   }
+
+   wdt->map_count++;
+
+   return wdt->ptr;
+
+err:
+   pipe->tex_transfer_destroy(pipe, tr);
+   return NULL;
+}
+
+static void
+wsw_dt_unmap(struct sw_winsys *ws,
+             struct sw_displaytarget *dt)
+{
+   struct wrapper_sw_displaytarget *wdt = wrapper_sw_displaytarget(dt);
+   struct pipe_context *pipe = wdt->winsys->pipe;
+
+   assert(wdt->transfer);
+
+   wdt->map_count--;
+
+   if (wdt->map_count)
+      return;
+
+   pipe->transfer_unmap(pipe, wdt->transfer);
+   pipe->tex_transfer_destroy(pipe, wdt->transfer);
+   wdt->transfer = NULL;
+}
+
+static void
+wsw_dt_destroy(struct sw_winsys *ws,
+               struct sw_displaytarget *dt)
+{
+   struct wrapper_sw_displaytarget *wdt = wrapper_sw_displaytarget(dt);
+
+   pipe_texture_reference(&wdt->tex, NULL);
+
+   FREE(wdt);
+}
+
+static void
+wsw_destroy(struct sw_winsys *ws)
+{
+   struct wrapper_sw_winsys *wsw = wrapper_sw_winsys(ws);
+
+   wsw->pipe->destroy(wsw->pipe);
+   wsw->screen->destroy(wsw->screen);
+
+   FREE(wsw);
+}
+
+struct sw_winsys *
+wrapper_sw_winsys_warp_pipe_screen(struct pipe_screen *screen)
+{
+   struct wrapper_sw_winsys *wsw = CALLOC_STRUCT(wrapper_sw_winsys);
+
+   wsw->base.displaytarget_create = wsw_dt_create;
+   wsw->base.displaytarget_from_handle = wsw_dt_from_handle;
+   wsw->base.displaytarget_map = wsw_dt_map;
+   wsw->base.displaytarget_unmap = wsw_dt_unmap;
+   wsw->base.displaytarget_destroy = wsw_dt_destroy;
+   wsw->base.destroy = wsw_destroy;
+
+   wsw->screen = screen;
+   wsw->pipe = screen->context_create(screen, NULL);
+   if (!wsw->pipe)
+      goto err;
+
+   return &wsw->base;
+
+err:
+   FREE(wsw);
+   return NULL;
+}
diff --git a/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.h b/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.h
new file mode 100644
index 0000000000..b5c25a3c50
--- /dev/null
+++ b/src/gallium/winsys/sw/wrapper/wrapper_sw_winsys.h
@@ -0,0 +1,35 @@
+/**********************************************************
+ * Copyright 2010 VMware, Inc.  All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use, copy,
+ * modify, merge, publish, distribute, sublicense, and/or sell copies
+ * of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * 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 WRAPPER_SW_WINSYS
+#define WRAPPER_SW_WINSYS
+
+struct sw_winsys;
+struct pipe_screen;
+
+struct sw_winsys *wrapper_sw_winsys_warp_pipe_screen(struct pipe_screen *screen);
+
+#endif
diff --git a/src/gallium/winsys/sw/xlib/Makefile b/src/gallium/winsys/sw/xlib/Makefile
new file mode 100644
index 0000000000..c669389928
--- /dev/null
+++ b/src/gallium/winsys/sw/xlib/Makefile
@@ -0,0 +1,17 @@
+TOP = ../../../../..
+include $(TOP)/configs/current
+
+LIBNAME = ws_xlib
+
+LIBRARY_INCLUDES = \
+	-I$(TOP)/src/gallium/include \
+	-I$(TOP)/src/gallium/drivers \
+	-I$(TOP)/src/gallium/auxiliary \
+	$(X11_CFLAGS)
+
+C_SOURCES = \
+	xlib_sw_winsys.c 
+
+include ../../../Makefile.template
+
+
diff --git a/src/gallium/winsys/sw/xlib/SConscript b/src/gallium/winsys/sw/xlib/SConscript
new file mode 100644
index 0000000000..2af6153b4c
--- /dev/null
+++ b/src/gallium/winsys/sw/xlib/SConscript
@@ -0,0 +1,23 @@
+#######################################################################
+# SConscript for xlib winsys
+
+
+Import('*')
+
+if env['platform'] == 'linux':
+
+    env = env.Clone()
+
+    env.Append(CPPPATH = [
+        '#/src/gallium/include',
+        '#/src/gallium/auxiliary',
+        '#/src/gallium/drivers',
+    ])
+
+    ws_xlib = env.ConvenienceLibrary(
+        target = 'ws_xlib',
+        source = [
+           'xlib_sw_winsys.c',
+        ]
+    )
+    Export('ws_xlib')
diff --git a/src/gallium/winsys/sw/xlib/xlib_sw_winsys.c b/src/gallium/winsys/sw/xlib/xlib_sw_winsys.c
new file mode 100644
index 0000000000..54789d7a87
--- /dev/null
+++ b/src/gallium/winsys/sw/xlib/xlib_sw_winsys.c
@@ -0,0 +1,464 @@
+/**************************************************************************
+ * 
+ * Copyright 2007 Tungsten Graphics, Inc., Bismarck, ND., USA
+ * 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 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
+ * THE COPYRIGHT HOLDERS, AUTHORS 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.
+ *
+ * The above copyright notice and this permission notice (including the
+ * next paragraph) shall be included in all copies or substantial portions
+ * of the Software.
+ * 
+ * 
+ **************************************************************************/
+
+/*
+ * Authors:
+ *   Keith Whitwell
+ *   Brian Paul
+ */
+
+#include "pipe/p_format.h"
+#include "pipe/p_context.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_math.h"
+#include "util/u_memory.h"
+
+#include "state_tracker/xlib_sw_winsys.h"
+
+#include <X11/Xlib.h>
+#include <X11/Xlibint.h>
+#include <X11/Xutil.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <X11/extensions/XShm.h>
+
+/**
+ * Subclass of pipe_buffer for Xlib winsys.
+ * Low-level OS/window system memory buffer
+ */
+struct xm_displaytarget
+{
+   enum pipe_format format;
+   unsigned width;
+   unsigned height;
+   unsigned stride;
+
+   void *data;
+   void *mapped;
+
+   Display *display;
+   Visual *visual;
+   XImage *tempImage;
+   GC gc;
+
+   /* This is the last drawable that this display target was presented
+    * against.  May need to recreate gc, tempImage when this changes??
+    */
+   Drawable drawable;
+
+   XShmSegmentInfo shminfo;
+   int shm;
+};
+
+
+/**
+ * Subclass of sw_winsys for Xlib winsys
+ */
+struct xlib_sw_winsys
+{
+   struct sw_winsys base;
+
+
+
+   Display *display;
+};
+
+
+
+/** Cast wrapper */
+static INLINE struct xm_displaytarget *
+xm_displaytarget( struct sw_displaytarget *dt )
+{
+   return (struct xm_displaytarget *)dt;
+}
+
+
+/**
+ * X Shared Memory Image extension code
+ */
+
+static volatile int mesaXErrorFlag = 0;
+
+/**
+ * Catches potential Xlib errors.
+ */
+static int
+mesaHandleXError(Display *dpy, XErrorEvent *event)
+{
+   (void) dpy;
+   (void) event;
+   mesaXErrorFlag = 1;
+   return 0;
+}
+
+
+static char *alloc_shm(struct xm_displaytarget *buf, unsigned size)
+{
+   XShmSegmentInfo *const shminfo = & buf->shminfo;
+
+   shminfo->shmid = shmget(IPC_PRIVATE, size, IPC_CREAT|0777);
+   if (shminfo->shmid < 0) {
+      return NULL;
+   }
+
+   shminfo->shmaddr = (char *) shmat(shminfo->shmid, 0, 0);
+   if (shminfo->shmaddr == (char *) -1) {
+      shmctl(shminfo->shmid, IPC_RMID, 0);
+      return NULL;
+   }
+
+   shminfo->readOnly = False;
+   return shminfo->shmaddr;
+}
+
+
+/**
+ * Allocate a shared memory XImage back buffer for the given XMesaBuffer.
+ */
+static void
+alloc_shm_ximage(struct xm_displaytarget *xm_dt,
+                 struct xlib_drawable *xmb,
+                 unsigned width, unsigned height)
+{
+   /*
+    * We have to do a _lot_ of error checking here to be sure we can
+    * really use the XSHM extension.  It seems different servers trigger
+    * errors at different points if the extension won't work.  Therefore
+    * we have to be very careful...
+    */
+   int (*old_handler)(Display *, XErrorEvent *);
+
+   xm_dt->tempImage = XShmCreateImage(xm_dt->display,
+                                      xmb->visual,
+                                      xmb->depth,
+                                      ZPixmap,
+                                      NULL,
+                                      &xm_dt->shminfo,
+                                      width, height);
+   if (xm_dt->tempImage == NULL) {
+      xm_dt->shm = 0;
+      return;
+   }
+
+
+   mesaXErrorFlag = 0;
+   old_handler = XSetErrorHandler(mesaHandleXError);
+   /* This may trigger the X protocol error we're ready to catch: */
+   XShmAttach(xm_dt->display, &xm_dt->shminfo);
+   XSync(xm_dt->display, False);
+
+   if (mesaXErrorFlag) {
+      /* we are on a remote display, this error is normal, don't print it */
+      XFlush(xm_dt->display);
+      mesaXErrorFlag = 0;
+      XDestroyImage(xm_dt->tempImage);
+      xm_dt->tempImage = NULL;
+      xm_dt->shm = 0;
+      (void) XSetErrorHandler(old_handler);
+      return;
+   }
+
+   xm_dt->shm = 1;
+}
+
+
+static void
+alloc_ximage(struct xm_displaytarget *xm_dt,
+             struct xlib_drawable *xmb,
+             unsigned width, unsigned height)
+{
+   if (xm_dt->shm) {
+      alloc_shm_ximage(xm_dt, xmb, width, height);
+      return;
+   }
+
+   xm_dt->tempImage = XCreateImage(xm_dt->display,
+                                   xmb->visual,
+                                   xmb->depth,
+                                   ZPixmap, 0,
+                                   NULL, width, height,
+                                   8, 0);
+}
+
+static boolean
+xm_is_displaytarget_format_supported( struct sw_winsys *ws,
+                                      unsigned tex_usage,
+                                      enum pipe_format format )
+{
+   /* TODO: check visuals or other sensible thing here */
+   return TRUE;
+}
+
+
+static void *
+xm_displaytarget_map(struct sw_winsys *ws,
+                     struct sw_displaytarget *dt,
+                     unsigned flags)
+{
+   struct xm_displaytarget *xm_dt = xm_displaytarget(dt);
+   xm_dt->mapped = xm_dt->data;
+   return xm_dt->mapped;
+}
+
+static void
+xm_displaytarget_unmap(struct sw_winsys *ws,
+                       struct sw_displaytarget *dt)
+{
+   struct xm_displaytarget *xm_dt = xm_displaytarget(dt);
+   xm_dt->mapped = NULL;
+}
+
+static void
+xm_displaytarget_destroy(struct sw_winsys *ws,
+                         struct sw_displaytarget *dt)
+{
+   struct xm_displaytarget *xm_dt = xm_displaytarget(dt);
+
+   if (xm_dt->data) {
+      if (xm_dt->shminfo.shmid >= 0) {
+         shmdt(xm_dt->shminfo.shmaddr);
+         shmctl(xm_dt->shminfo.shmid, IPC_RMID, 0);
+         
+         xm_dt->shminfo.shmid = -1;
+         xm_dt->shminfo.shmaddr = (char *) -1;
+      }
+      else {
+         FREE(xm_dt->data);
+      }
+   }
+
+   if (xm_dt->tempImage)
+      XDestroyImage(xm_dt->tempImage);
+
+   if (xm_dt->gc)
+      XFreeGC(xm_dt->display, xm_dt->gc);
+
+   FREE(xm_dt);
+}
+
+
+/**
+ * Display/copy the image in the surface into the X window specified
+ * by the XMesaBuffer.
+ */
+static void
+xlib_sw_display(struct xlib_drawable *xlib_drawable,
+                struct sw_displaytarget *dt)
+{
+   static boolean no_swap = 0;
+   static boolean firsttime = 1;
+   struct xm_displaytarget *xm_dt = xm_displaytarget(dt);
+   Display *display = xm_dt->display;
+   XImage *ximage;
+
+   if (firsttime) {
+      no_swap = getenv("SP_NO_RAST") != NULL;
+      firsttime = 0;
+   }
+
+   if (no_swap)
+      return;
+
+   if (xm_dt->drawable != xlib_drawable->drawable) {
+      if (xm_dt->gc) {
+         XFreeGC( display, xm_dt->gc );
+         xm_dt->gc = NULL;
+      }
+
+      if (xm_dt->tempImage) {
+         XDestroyImage( xm_dt->tempImage );
+         xm_dt->tempImage = NULL;
+      }
+
+      xm_dt->drawable = xlib_drawable->drawable;
+   }
+
+   if (xm_dt->tempImage == NULL) {
+      assert(util_format_get_blockwidth(xm_dt->format) == 1);
+      assert(util_format_get_blockheight(xm_dt->format) == 1);
+      alloc_ximage(xm_dt, xlib_drawable,
+                   xm_dt->stride / util_format_get_blocksize(xm_dt->format),
+                   xm_dt->height);
+      if (!xm_dt->tempImage)
+         return;
+   }
+
+   if (xm_dt->gc == NULL) {
+      xm_dt->gc = XCreateGC( display, xlib_drawable->drawable, 0, NULL );
+      XSetFunction( display, xm_dt->gc, GXcopy );
+   }
+
+   if (xm_dt->shm)
+   {
+      ximage = xm_dt->tempImage;
+      ximage->data = xm_dt->data;
+
+      /* _debug_printf("XSHM\n"); */
+      XShmPutImage(xm_dt->display, xlib_drawable->drawable, xm_dt->gc,
+                   ximage, 0, 0, 0, 0, xm_dt->width, xm_dt->height, False);
+   }
+   else {
+      /* display image in Window */
+      ximage = xm_dt->tempImage;
+      ximage->data = xm_dt->data;
+
+      /* check that the XImage has been previously initialized */
+      assert(ximage->format);
+      assert(ximage->bitmap_unit);
+
+      /* update XImage's fields */
+      ximage->width = xm_dt->width;
+      ximage->height = xm_dt->height;
+      ximage->bytes_per_line = xm_dt->stride;
+
+      /* _debug_printf("XPUT\n"); */
+      XPutImage(xm_dt->display, xlib_drawable->drawable, xm_dt->gc,
+                ximage, 0, 0, 0, 0, xm_dt->width, xm_dt->height);
+   }
+}
+
+/**
+ * Display/copy the image in the surface into the X window specified
+ * by the XMesaBuffer.
+ */
+static void
+xm_displaytarget_display(struct sw_winsys *ws,
+                         struct sw_displaytarget *dt,
+                         void *context_private)
+{
+   struct xlib_drawable *xlib_drawable = (struct xlib_drawable *)context_private;
+   xlib_sw_display(xlib_drawable, dt);
+}
+
+
+static struct sw_displaytarget *
+xm_displaytarget_create(struct sw_winsys *winsys,
+                        unsigned tex_usage,
+                        enum pipe_format format,
+                        unsigned width, unsigned height,
+                        unsigned alignment,
+                        unsigned *stride)
+{
+   struct xm_displaytarget *xm_dt;
+   unsigned nblocksy, size;
+
+   xm_dt = CALLOC_STRUCT(xm_displaytarget);
+   if(!xm_dt)
+      goto no_xm_dt;
+
+   xm_dt->display = ((struct xlib_sw_winsys *)winsys)->display;
+   xm_dt->format = format;
+   xm_dt->width = width;
+   xm_dt->height = height;
+
+   nblocksy = util_format_get_nblocksy(format, height);
+   xm_dt->stride = align(util_format_get_stride(format, width), alignment);
+   size = xm_dt->stride * nblocksy;
+
+   if (!debug_get_bool_option("XLIB_NO_SHM", FALSE))
+   {
+      xm_dt->shminfo.shmid = -1;
+      xm_dt->shminfo.shmaddr = (char *) -1;
+      xm_dt->shm = TRUE;
+         
+      xm_dt->data = alloc_shm(xm_dt, size);
+      if(!xm_dt->data)
+         goto no_data;
+   }
+
+   if(!xm_dt->data) {
+      xm_dt->data = align_malloc(size, alignment);
+      if(!xm_dt->data)
+         goto no_data;
+   }
+
+   *stride = xm_dt->stride;
+   return (struct sw_displaytarget *)xm_dt;
+
+no_data:
+   FREE(xm_dt);
+no_xm_dt:
+   return NULL;
+}
+
+
+static struct sw_displaytarget *
+xm_displaytarget_from_handle(struct sw_winsys *winsys,
+                             const struct pipe_texture *templet,
+                             struct winsys_handle *whandle,
+                             unsigned *stride)
+{
+   assert(0);
+   return NULL;
+}
+
+
+static boolean
+xm_displaytarget_get_handle(struct sw_winsys *winsys,
+                            struct sw_displaytarget *dt,
+                            struct winsys_handle *whandle)
+{
+   assert(0);
+   return FALSE;
+}
+
+
+static void
+xm_destroy( struct sw_winsys *ws )
+{
+   FREE(ws);
+}
+
+
+struct sw_winsys *
+xlib_create_sw_winsys( Display *display )
+{
+   struct xlib_sw_winsys *ws;
+
+   ws = CALLOC_STRUCT(xlib_sw_winsys);
+   if (!ws)
+      return NULL;
+
+   ws->display = display;
+   ws->base.destroy = xm_destroy;
+
+   ws->base.is_displaytarget_format_supported = xm_is_displaytarget_format_supported;
+
+   ws->base.displaytarget_create = xm_displaytarget_create;
+   ws->base.displaytarget_from_handle = xm_displaytarget_from_handle;
+   ws->base.displaytarget_get_handle = xm_displaytarget_get_handle;
+   ws->base.displaytarget_map = xm_displaytarget_map;
+   ws->base.displaytarget_unmap = xm_displaytarget_unmap;
+   ws->base.displaytarget_destroy = xm_displaytarget_destroy;
+
+   ws->base.displaytarget_display = xm_displaytarget_display;
+
+   return &ws->base;
+}
+