d3d1x: add new Direct3D 10/11 COM state tracker for Gallium

This is a new implementation of the Direct3D 11 COM API for Gallium.

Direct3D 10 and 10.1 implementations are also provided, which are
automatically generated with s/D3D11/D3D10/g plus a bunch of #ifs.

While this is an initial version, most of the code is there (limited
to what Gallium can express), and tri, gears and texturing demos
are working.

The primary goal is to realize Gallium's promise of multiple API
support, and provide an API that can be easily implemented with just
a very thin wrapper over Gallium, instead of the enormous amount of
complex code needed for OpenGL.

The secondary goal is to run Windows Direct3D 10/11 games on Linux
using Wine.
Wine dlls are currently not provided, but adding them should be
quite easy.

Fglrx and nvidia drivers can also be supported by writing a Gallium
driver that talks to them using OpenGL, which is a relatively easy
task.
Thanks to the great design of Direct3D 10/11 and closeness to Gallium,
this approach should not result in detectable overhead, and is the
most maintainable way to do it, providing a path to switch to the
open Gallium drivers once they are on par with the proprietary ones.

Currently Wine has a very limited Direct3D 10 implementation, and
completely lacks a Direct3D 11 implementation.

Note that Direct3D 10/11 are completely different from Direct3D 9
and earlier, and thus warrant a fully separate implementation.

The third goal is to provide a superior alternative to OpenGL for
graphics programming on non-Windows systems, particularly Linux
and other free and open systems.

Thanks to a very clean and well-though design done from scratch,
the Direct3D 10/11 APIs are vastly better than OpenGL and can be
supported with orders of magnitude less code and development time,
as you can see by comparing the lines of code of this commit and
those in the existing Mesa OpenGL implementation.

This would have been true for the Longs Peak proposal as well, but
unfortunately it was abandoned by Khronos, leaving the OpenGL
ecosystem without a graphics API with a modern design.

A binding of Direct3D 10/11 to EGL would solve this issue in the
most economical way possible, and this would be great to provide
in Mesa, since DXGI, the API used to bind Direct3D 10/11 to Windows,
is a bit suboptimal, especially on non-Windows platforms.

Finally, a mature Direct3D 10/11 implementation is intrinsically going
to be faster and more reliable than an OpenGL implementation, thanks
to the dramatically smaller API and the segregation of all nontrivial
work to object creation that the application must perform ahead of
time.

Currently, this commit contains:
- Independently created headers for Direct3D 10, 10.1, 11 and DXGI 1.1,
  partially based on the existing Wine headers for D3D10 and DXGI 1.0
- A parser for Direct3D 10/11 DXBC and TokenizedProgramFormat (TPF)
- A shader translator from TokenizedProgramFormat to TGSI
- Implementation of the Direct3D 11 core interfaces
- Automatically generated implementation of Direct3D 10 and 10.1
- Implementation of DXGI using the "native" framework of the EGL st
- Demos, usable either on Windows or on this implementation
  - d3d11tri, a clone of tri
  - d3d11tex, a (multi)texturing demo
  - d3d11gears, an improved version of glxgears
  - d3d11spikysphere, a D3D11 tessellation demo (currently Windows-only)
- A downloader for the Microsoft HLSL compiler, needed to recompile
  the shaders (compiled shader bytecode is also included)

To compile this, configure at least with these options:
--with-state-trackers=egl,d3d1x --with-egl-platforms=x11
plus some gallium drivers (such as softpipe with --enable-gallium-swrast)

The Wine headers (usually from a wine-dev or wine-devel package) must
be installed.
Only x86-32 has been tested.

You may need to run "make" in the subdirectories of src/gallium/winsys/sw
and you may need to manually run "sudo make install" in
src/gallium/targets/egl

To test it, run the demos in the "progs" directory.
Windows binaries are included to find out how demos should work, and to
test Wine integration when it will be done.

Enjoy, and let me know if you manage to compile and run this, or
which issues you are facing if not.

Using softpipe is recommended for now, and your mileage with hardware
drivers may vary.
However, getting this to work on hardware drivers is also obviously very
important.

Note that currently llvmpipe is buggy and causes all 3 gears to be
drawn with the same color.
Use export GALLIUM_DRIVER=softpipe to avoid this.

Thanks to all the Gallium contributors and especially the VMware
team, whose work made it possible to implement Direct3D 10/11 much
more easily than it would have been otherwise.

4 files changed, 1587 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/d3d1x/dxgi/Makefile b/src/gallium/state_trackers/d3d1x/dxgi/Makefile
new file mode 100644
index 0000000000..323f6f7bbe
--- /dev/null
+++ b/src/gallium/state_trackers/d3d1x/dxgi/Makefile
@@ -0,0 +1,17 @@
+LIBNAME=dxgi
+LIBRARY_INCLUDES=-Iinclude -I../gd3dapi -I../d3dapi -I../w32api -I../d3d1xstutil/include -I../include -I../../../include -I../../../auxiliary -I../../../state_trackers/egl/common
+LIBRARY_DEFINES=-DDXGI_DRIVER_SEARCH_DIR=\"$(EGL_DRIVER_INSTALL_DIR)\"
+CPP_SOURCES=$(wildcard src/*.cpp)
+
+include ../Makefile.inc
+
+ifneq ($(findstring x11, $(EGL_PLATFORMS)),)
+LIBRARY_DEFINES += -DGALLIUM_DXGI_USE_X11
+endif
+ifneq ($(findstring drm, $(EGL_PLATFORMS)),)
+LIBRARY_DEFINES += -DGALLIUM_DXGI_USE_DRM
+endif
+ifneq ($(findstring fbdev, $(EGL_PLATFORMS)),)
+LIBRARY_DEFINES += -DGALLIUM_DXGI_USE_FBDEV
+endif
+
diff --git a/src/gallium/state_trackers/d3d1x/dxgi/src/dxgi_loader.cpp b/src/gallium/state_trackers/d3d1x/dxgi/src/dxgi_loader.cpp
new file mode 100644
index 0000000000..e5ba309fe4
--- /dev/null
+++ b/src/gallium/state_trackers/d3d1x/dxgi/src/dxgi_loader.cpp
@@ -0,0 +1,206 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.9
+ *
+ * Copyright (C) 2010 LunarG Inc.
+ *
+ * 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.
+ *
+ * Authors:
+ *    Chia-I Wu <olv@lunarg.com>
+ */
+
+#include "dxgi_private.h"
+#include <stdio.h>
+extern "C"
+{
+#include "state_tracker/drm_driver.h"
+#include "util/u_dl.h"
+}
+#define PIPE_PREFIX "pipe_"
+
+static const char *
+get_search_path(void)
+{
+   static const char *search_path;
+
+   if (!search_path) {
+      static char buffer[1024];
+      const char *p;
+      int ret;
+
+      p = getenv("DXGI_DRIVERS_PATH");
+      if(!p)
+	      p = getenv("EGL_DRIVERS_PATH");
+#ifdef __unix__
+      if (p && (geteuid() != getuid() || getegid() != getgid())) {
+         p = NULL;
+      }
+#endif
+
+      if (p) {
+         ret = snprintf(buffer, sizeof(buffer),
+               "%s:%s", p, DXGI_DRIVER_SEARCH_DIR);
+         if (ret > 0 && ret < (int)sizeof(buffer))
+            search_path = buffer;
+      }
+   }
+   if (!search_path)
+      search_path = DXGI_DRIVER_SEARCH_DIR;
+
+   return search_path;
+}
+
+static void
+for_each_colon_separated(const char *search_path,
+                   bool (*loader)(const char *, size_t, void *),
+                   void *loader_data)
+{
+   const char *cur, *next;
+   size_t len;
+
+   cur = search_path;
+   while (cur) {
+      next = strchr(cur, ':');
+      len = (next) ? next - cur : strlen(cur);
+
+      if (!loader(cur, len, loader_data))
+         break;
+
+      cur = (next) ? next + 1 : NULL;
+   }
+}
+
+void
+for_each_in_search_path(bool (*callback)(const char *, size_t, void *),
+                      void *callback_data)
+{
+   const char *search_path = get_search_path();
+   for_each_colon_separated(search_path, callback, callback_data);
+}
+
+static struct pipe_module {
+   boolean initialized;
+   char *name;
+   struct util_dl_library *lib;
+   const struct drm_driver_descriptor *drmdd;
+   struct pipe_screen *(*swrast_create_screen)(struct sw_winsys *);
+} pipe_modules[16];
+
+static bool
+dlopen_pipe_module_cb(const char *dir, size_t len, void *callback_data)
+{
+   struct pipe_module *pmod = (struct pipe_module *) callback_data;
+   char path[1024];
+   int ret;
+
+   if (len) {
+      ret = snprintf(path, sizeof(path),
+            "%.*s/" PIPE_PREFIX "%s" UTIL_DL_EXT, len, dir, pmod->name);
+   }
+   else {
+      ret = snprintf(path, sizeof(path),
+            PIPE_PREFIX "%s" UTIL_DL_EXT, pmod->name);
+   }
+   if (ret > 0 && ret < (int)sizeof(path)) {
+      pmod->lib = util_dl_open(path);
+   }
+
+   return !(pmod->lib);
+}
+
+static bool
+load_pipe_module(struct pipe_module *pmod, const char *name)
+{
+   pmod->name = strdup(name);
+   if (!pmod->name)
+      return FALSE;
+
+   for_each_in_search_path(dlopen_pipe_module_cb, (void *) pmod);
+   if (pmod->lib) {
+      pmod->drmdd = (const struct drm_driver_descriptor *)
+         util_dl_get_proc_address(pmod->lib, "driver_descriptor");
+
+      /* sanity check on the name */
+      if (pmod->drmdd && strcmp(pmod->drmdd->name, pmod->name) != 0)
+         pmod->drmdd = NULL;
+
+      /* swrast */
+      if (pmod->drmdd && !pmod->drmdd->driver_name) {
+         pmod->swrast_create_screen =
+            (struct pipe_screen *(*)(struct sw_winsys *))
+            util_dl_get_proc_address(pmod->lib, "swrast_create_screen");
+         if (!pmod->swrast_create_screen)
+            pmod->drmdd = NULL;
+      }
+
+      if (!pmod->drmdd) {
+         util_dl_close(pmod->lib);
+         pmod->lib = NULL;
+      }
+   }
+
+   return (pmod->drmdd != NULL);
+}
+
+
+static struct pipe_module *
+get_pipe_module(const char *name)
+{
+   struct pipe_module *pmod = NULL;
+   unsigned i;
+
+   if (!name)
+      return NULL;
+
+   for (i = 0; i < sizeof(pipe_modules) / sizeof(pipe_modules[0]); i++) {
+      if (!pipe_modules[i].initialized ||
+          strcmp(pipe_modules[i].name, name) == 0) {
+         pmod = &pipe_modules[i];
+         break;
+      }
+   }
+   if (!pmod)
+      return NULL;
+
+   if (!pmod->initialized) {
+      load_pipe_module(pmod, name);
+      pmod->initialized = TRUE;
+   }
+
+   return pmod;
+}
+
+struct native_display;
+
+struct pipe_screen *
+dxgi_loader_create_drm_screen(struct native_display* dpy, const char *name, int fd)
+{
+   struct pipe_module *pmod = get_pipe_module(name);
+   return (pmod && pmod->drmdd && pmod->drmdd->create_screen) ?
+      pmod->drmdd->create_screen(fd) : NULL;
+}
+
+struct pipe_screen *
+dxgi_loader_create_sw_screen(struct native_display* dpy, struct sw_winsys *ws)
+{
+   struct pipe_module *pmod = get_pipe_module("swrast");
+   return (pmod && pmod->swrast_create_screen) ?
+      pmod->swrast_create_screen(ws) : NULL;
+}
diff --git a/src/gallium/state_trackers/d3d1x/dxgi/src/dxgi_native.cpp b/src/gallium/state_trackers/d3d1x/dxgi/src/dxgi_native.cpp
new file mode 100644
index 0000000000..69ddbc5a0c
--- /dev/null
+++ b/src/gallium/state_trackers/d3d1x/dxgi/src/dxgi_native.cpp
@@ -0,0 +1,1314 @@
+/**************************************************************************
+ *
+ * Copyright 2010 Luca Barbieri
+ *
+ * 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 (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 NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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.
+ *
+ **************************************************************************/
+
+#include "dxgi_private.h"
+extern "C" {
+#include "native.h"
+#include <util/u_format.h>
+#include <util/u_inlines.h>
+#include <util/u_simple_shaders.h>
+#include <pipe/p_shader_tokens.h>
+}
+#include <iostream>
+#include <memory>
+
+struct GalliumDXGIOutput;
+struct GalliumDXGIAdapter;
+struct GalliumDXGISwapChain;
+struct GalliumDXGIFactory;
+
+static HRESULT GalliumDXGISwapChainCreate(GalliumDXGIFactory* factory, IUnknown* device, const DXGI_SWAP_CHAIN_DESC& desc, IDXGISwapChain** ppSwapChain);
+static HRESULT GalliumDXGIAdapterCreate(GalliumDXGIFactory* adapter, const struct native_platform* platform, void* dpy, IDXGIAdapter1** ppAdapter);
+static HRESULT GalliumDXGIOutputCreate(GalliumDXGIAdapter* adapter, const std::string& name, const struct native_connector* connector, IDXGIOutput** ppOutput);
+static void GalliumDXGISwapChainRevalidate(IDXGISwapChain* swap_chain);
+
+template<typename Base = IDXGIObject, typename Parent = IDXGIObject>
+struct GalliumDXGIObject : public GalliumPrivateDataComObject<Base>
+{
+	ComPtr<Parent> parent;
+
+	GalliumDXGIObject(Parent* p_parent = 0)
+	{
+		this->parent = p_parent;
+	}
+
+        virtual HRESULT STDMETHODCALLTYPE GetParent(
+            __in  REFIID riid,
+            __out  void **ppParent)
+        {
+        	return parent->QueryInterface(riid, ppParent);
+        }
+};
+
+static void* STDMETHODCALLTYPE identity_resolver(void* cookie, HWND hwnd)
+{
+	return (void*)hwnd;
+}
+
+struct GalliumDXGIFactory : public GalliumDXGIObject<IDXGIFactory1, IUnknown>
+{
+        HWND associated_window;
+	const struct native_platform* platform;
+	void* display;
+	PFNHWNDRESOLVER resolver;
+	void* resolver_cookie;
+
+        GalliumDXGIFactory(const struct native_platform* platform, void* display, PFNHWNDRESOLVER resolver, void* resolver_cookie)
+        : GalliumDXGIObject((IUnknown*)NULL), platform(platform), display(display), resolver(resolver ? resolver : identity_resolver), resolver_cookie(resolver_cookie)
+        {}
+
+        virtual HRESULT STDMETHODCALLTYPE EnumAdapters(
+        	UINT Adapter,
+        	__out  IDXGIAdapter **ppAdapter)
+	{
+		return EnumAdapters1(Adapter, (IDXGIAdapter1**)ppAdapter);
+	}
+
+        virtual HRESULT STDMETHODCALLTYPE EnumAdapters1(
+        	UINT Adapter,
+        	__out  IDXGIAdapter1 **ppAdapter)
+        {
+        	*ppAdapter = 0;
+		if(Adapter == 0)
+		{
+			return GalliumDXGIAdapterCreate(this, platform, display, ppAdapter);
+		}
+#if 0
+		// TODO: enable this
+        	if(platform == native_get_x11_platform())
+        	{
+        		unsigned nscreens = ScreenCount((Display*)display);
+        		if(Adapter < nscreens)
+        		{
+        			unsigned def_screen = DefaultScreen(display);
+        			if(Adapter <= def_screen)
+        				--Adapter;
+        			*ppAdapter = GalliumDXGIAdapterCreate(this, platform, display, Adapter);
+        			return S_OK;
+        		}
+        	}
+#endif
+		return DXGI_ERROR_NOT_FOUND;
+        }
+
+        /* TODO: this is a mysterious underdocumented magic API
+         * Can we have multiple windows associated?
+         * Can we have multiple windows associated if we use multiple factories?
+         * If so, what should GetWindowAssociation return?
+         * If not, does a new swapchain steal the association?
+         * Does this act for existing swapchains? For new swapchains?
+         */
+        virtual HRESULT STDMETHODCALLTYPE MakeWindowAssociation(
+        	HWND WindowHandle,
+        	UINT Flags)
+        {
+        	/* TODO: actually implement, for Wine, X11 and KMS*/
+        	associated_window = WindowHandle;
+        	return S_OK;
+        }
+
+        virtual HRESULT STDMETHODCALLTYPE GetWindowAssociation(
+        	__out  HWND *pWindowHandle)
+        {
+        	*pWindowHandle = associated_window;
+        	return S_OK;
+        }
+
+        virtual HRESULT STDMETHODCALLTYPE CreateSwapChain(
+        	__in  IUnknown *pDevice,
+        	__in  DXGI_SWAP_CHAIN_DESC *pDesc,
+        	__out  IDXGISwapChain **ppSwapChain)
+        {
+        	return GalliumDXGISwapChainCreate(this, pDevice, *pDesc, ppSwapChain);
+        }
+
+        virtual HRESULT STDMETHODCALLTYPE CreateSoftwareAdapter(
+            HMODULE Module,
+            __out  IDXGIAdapter **ppAdapter)
+        {
+        	/* TODO: ignore the module, and just create a Gallium software screen */
+        	*ppAdapter = 0;
+        	return E_NOTIMPL;
+        }
+
+        /* TODO: support hotplug */
+        virtual BOOL STDMETHODCALLTYPE IsCurrent( void)
+        {
+        	return TRUE;
+        }
+};
+
+struct GalliumDXGIAdapter
+	: public GalliumMultiComObject<
+		  GalliumDXGIObject<IDXGIAdapter1, GalliumDXGIFactory>,
+		  IGalliumAdapter>
+{
+	struct native_display* display;
+	const struct native_config** configs;
+	std::unordered_multimap<unsigned, unsigned> configs_by_pipe_format;
+	std::unordered_map<unsigned, unsigned> configs_by_native_visual_id;
+	const struct native_connector** connectors;
+	unsigned num_configs;
+	DXGI_ADAPTER_DESC1 desc;
+	std::vector<ComPtr<IDXGIOutput> > outputs;
+	int num_outputs;
+	struct native_event_handler handler;
+
+	GalliumDXGIAdapter(GalliumDXGIFactory* factory, const struct native_platform* platform, void* dpy)
+	{
+		this->parent = factory;
+
+		handler.invalid_surface = handle_invalid_surface;
+		handler.new_drm_screen = dxgi_loader_create_drm_screen;
+		handler.new_sw_screen = dxgi_loader_create_sw_screen;
+		display = platform->create_display(dpy, &handler, this);
+		if(!display)
+			throw E_FAIL;
+		memset(&desc, 0, sizeof(desc));
+		std::string s = std::string("GalliumD3D on ") + display->screen->get_name(display->screen) + " by " + display->screen->get_vendor(display->screen);
+
+		/* hopefully no one will decide to use UTF-8 in Gallium name/vendor strings */
+		for(int i = 0; i < std::min((int)s.size(), 127); ++i)
+			desc.Description[i] = (WCHAR)s[i];
+
+		// TODO: add an interface to get these; for now, return mid/low values
+		desc.DedicatedVideoMemory = 256 << 20;
+		desc.DedicatedSystemMemory = 256 << 20;
+		desc.SharedSystemMemory = 1024 << 20;
+
+		// TODO: we should actually use an unique ID instead
+		*(void**)&desc.AdapterLuid = dpy;
+
+		configs = display->get_configs(display, (int*)&num_configs);
+		for(unsigned i = 0; i < num_configs; ++i)
+		{
+			if(configs[i]->window_bit)
+			{
+				configs_by_pipe_format.insert(std::make_pair(configs[i]->color_format, i));
+				configs_by_native_visual_id[configs[i]->native_visual_id] = i;
+			}
+		}
+
+		connectors = 0;
+		num_outputs = 0;
+
+		if(display->modeset)
+		{
+			int num_crtcs;
+
+			connectors = display->modeset->get_connectors(display, &num_outputs, &num_crtcs);
+			if(!connectors)
+				num_outputs = 0;
+			else if(!num_outputs)
+			{
+				free(connectors);
+				connectors = 0;
+			}
+		}
+		if(!num_outputs)
+			num_outputs = 1;
+	}
+
+	static void handle_invalid_surface(struct native_display *ndpy, struct native_surface *nsurf, unsigned int seq_num)
+	{
+		GalliumDXGISwapChainRevalidate((IDXGISwapChain*)nsurf->user_data);
+	}
+
+	~GalliumDXGIAdapter()
+	{
+		free(configs);
+		free(connectors);
+	}
+
+        virtual HRESULT STDMETHODCALLTYPE EnumOutputs(
+        	UINT Output,
+        	__out  IDXGIOutput **ppOutput)
+	{
+        	if(Output >= (unsigned)num_outputs)
+        		return DXGI_ERROR_NOT_FOUND;
+
+        	if(connectors)
+        	{
+        		std::ostringstream ss;
+        		ss << "Output #" << Output;
+			return GalliumDXGIOutputCreate(this, ss.str(), connectors[Output], ppOutput);
+        	}
+        	else
+        		return GalliumDXGIOutputCreate(this, "Unique output", NULL, ppOutput);
+	}
+
+        virtual HRESULT STDMETHODCALLTYPE GetDesc(
+        	__out  DXGI_ADAPTER_DESC *pDesc)
+        {
+        	memcpy(pDesc, &desc, sizeof(*pDesc));
+        	return S_OK;
+        }
+
+        virtual HRESULT STDMETHODCALLTYPE GetDesc1(
+        	__out  DXGI_ADAPTER_DESC1 *pDesc)
+        {
+        	memcpy(pDesc, &desc, sizeof(*pDesc));
+        	return S_OK;
+        }
+
+        virtual HRESULT STDMETHODCALLTYPE CheckInterfaceSupport(
+            __in  REFGUID InterfaceName,
+            __out  LARGE_INTEGER *pUMDVersion)
+        {
+        	// these number was taken from Windows 7 with Catalyst 10.8: its meaning is unclear
+        	if(InterfaceName == IID_ID3D11Device || InterfaceName == IID_ID3D10Device1 || InterfaceName == IID_ID3D10Device)
+        	{
+        		pUMDVersion->QuadPart = 0x00080011000a0411ULL;
+        		return S_OK;
+        	}
+        	return DXGI_ERROR_UNSUPPORTED;
+        }
+
+        pipe_screen* STDMETHODCALLTYPE GetGalliumScreen()
+        {
+        	return display->screen;
+        }
+
+        pipe_screen* STDMETHODCALLTYPE GetGalliumReferenceSoftwareScreen()
+        {
+        	// TODO: give a softpipe screen
+        	return display->screen;
+        }
+
+        pipe_screen* STDMETHODCALLTYPE GetGalliumFastSoftwareScreen()
+	{
+		// TODO: give an llvmpipe screen
+		return display->screen;
+	}
+};
+
+
+struct GalliumDXGIOutput : public GalliumDXGIObject<IDXGIOutput, GalliumDXGIAdapter>
+{
+	DXGI_OUTPUT_DESC desc;
+	const struct native_mode** modes;
+	DXGI_MODE_DESC* dxgi_modes;
+	unsigned num_modes;
+	const struct native_connector* connector;
+	DXGI_GAMMA_CONTROL* gamma;
+
+	GalliumDXGIOutput(GalliumDXGIAdapter* adapter, std::string name, const struct native_connector* connector = 0)
+	: GalliumDXGIObject(adapter), connector(connector)
+	{
+		memset(&desc, 0, sizeof(desc));
+		for(unsigned i = 0; i < std::min(name.size(), sizeof(desc.DeviceName) - 1); ++i)
+			desc.DeviceName[i] = name[i];
+		desc.AttachedToDesktop = TRUE;
+		/* TODO: should put an HMONITOR in desc.Monitor */
+
+		gamma = 0;
+		num_modes = 0;
+		modes = 0;
+		if(connector)
+		{
+			modes = parent->display->modeset->get_modes(parent->display, connector, (int*)&num_modes);
+			if(modes && num_modes)
+			{
+				dxgi_modes = new DXGI_MODE_DESC[num_modes];
+				for(unsigned i = 0; i < num_modes; ++i)
+				{
+					dxgi_modes[i].Width = modes[i]->width;
+					dxgi_modes[i].Height = modes[i]->height;
+					dxgi_modes[i].RefreshRate.Numerator = modes[i]->refresh_rate;
+					dxgi_modes[i].RefreshRate.Denominator = 1;
+					dxgi_modes[i].Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
+					dxgi_modes[i].ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
+				}
+			}
+			else
+			{
+				if(modes)
+				{
+					free(modes);
+					modes = 0;
+				}
+				goto use_fake_mode;
+			}
+		}
+		else
+		{
+use_fake_mode:
+			dxgi_modes = new DXGI_MODE_DESC[1];
+			dxgi_modes[0].Width = 1920;
+			dxgi_modes[0].Height = 1200;
+			dxgi_modes[0].RefreshRate.Numerator = 60;
+			dxgi_modes[0].RefreshRate.Denominator = 1;
+			dxgi_modes[0].Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
+			dxgi_modes[0].ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
+		}
+	}
+
+	~GalliumDXGIOutput()
+	{
+		delete [] dxgi_modes;
+		free(modes);
+		if(gamma)
+			delete gamma;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetDesc(
+		__out  DXGI_OUTPUT_DESC *pDesc)
+	{
+		*pDesc = desc;
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetDisplayModeList(
+		DXGI_FORMAT EnumFormat,
+		UINT Flags,
+		__inout  UINT *pNumModes,
+		__out_ecount_part_opt(*pNumModes,*pNumModes)  DXGI_MODE_DESC *pDesc)
+	{
+		/* TODO: should we return DXGI_ERROR_NOT_CURRENTLY_AVAILABLE when we don't
+		 * support modesetting instead of fake modes?
+		 */
+		pipe_format format = dxgi_to_pipe_format[EnumFormat];
+		if(parent->configs_by_pipe_format.count(format))
+		{
+			if(!pDesc)
+			{
+				*pNumModes = num_modes;
+				return S_OK;
+			}
+
+			unsigned copy_modes = std::min(num_modes, *pNumModes);
+			for(unsigned i = 0; i < copy_modes; ++i)
+			{
+				pDesc[i] = dxgi_modes[i];
+				pDesc[i].Format = EnumFormat;
+			}
+			*pNumModes = num_modes;
+
+			if(copy_modes < num_modes)
+				return DXGI_ERROR_MORE_DATA;
+			else
+				return S_OK;
+		}
+		else
+		{
+			*pNumModes = 0;
+			return S_OK;
+		}
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE FindClosestMatchingMode(
+		__in  const DXGI_MODE_DESC *pModeToMatch,
+		__out  DXGI_MODE_DESC *pClosestMatch,
+		__in_opt  IUnknown *pConcernedDevice)
+	{
+		/* TODO: actually implement this */
+		DXGI_FORMAT dxgi_format = pModeToMatch->Format;
+		enum pipe_format format = dxgi_to_pipe_format[dxgi_format];
+		init_pipe_to_dxgi_format();
+		if(!parent->configs_by_pipe_format.count(format))
+		{
+			if(!pConcernedDevice)
+				return E_FAIL;
+			else
+			{
+				format = parent->configs[0]->color_format;
+				dxgi_format = pipe_to_dxgi_format[format];
+			}
+		}
+
+		*pClosestMatch = dxgi_modes[0];
+		pClosestMatch->Format = dxgi_format;
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE WaitForVBlank( void)
+	{
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE TakeOwnership(
+		__in  IUnknown *pDevice,
+		BOOL Exclusive)
+	{
+		return S_OK;
+	}
+
+	virtual void STDMETHODCALLTYPE ReleaseOwnership( void)
+	{
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetGammaControlCapabilities(
+		__out  DXGI_GAMMA_CONTROL_CAPABILITIES *pGammaCaps)
+	{
+		memset(pGammaCaps, 0, sizeof(*pGammaCaps));
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE SetGammaControl(
+			__in  const DXGI_GAMMA_CONTROL *pArray)
+	{
+		if(!gamma)
+			gamma = new DXGI_GAMMA_CONTROL;
+		*gamma = *pArray;
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetGammaControl(
+			__out  DXGI_GAMMA_CONTROL *pArray)
+	{
+		if(gamma)
+			*pArray = *gamma;
+		else
+		{
+			pArray->Scale.Red = 1;
+			pArray->Scale.Green = 1;
+			pArray->Scale.Blue = 1;
+			pArray->Offset.Red = 0;
+			pArray->Offset.Green = 0;
+			pArray->Offset.Blue = 0;
+			for(unsigned i = 0; i <= 1024; ++i)
+				pArray->GammaCurve[i].Red = pArray->GammaCurve[i].Green = pArray->GammaCurve[i].Blue = (float)i / 1024.0;
+		}
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE SetDisplaySurface(
+		__in  IDXGISurface *pScanoutSurface)
+	{
+		return E_NOTIMPL;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetDisplaySurfaceData(
+		__in  IDXGISurface *pDestination)
+	{
+		return E_NOTIMPL;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetFrameStatistics(
+		__out  DXGI_FRAME_STATISTICS *pStats)
+	{
+		memset(pStats, 0, sizeof(*pStats));
+#ifdef _WIN32
+		QueryPerformanceCounter(&pStats->SyncQPCTime);
+#endif
+		return E_NOTIMPL;
+	}
+};
+
+/* Swap chain are rather complex, and Microsoft's documentation is rather
+ * lacking. As far as I know, this is the most thorough publicly available
+ * description of how swap chains work, based on multiple sources and
+ * experimentation.
+ *
+ * There are two modes (called "swap effects") that a swap chain can operate in:
+ * discard and sequential.
+ *
+ * In discard mode, things always look as if there is a single buffer, which
+ * you can get with GetBuffers(0).
+ * The 2D texture returned by GetBuffers(0) and can only be
+ * used as a render target view and for resource copies, since no CPU access
+ * flags are set and only the D3D11_BIND_RENDER_TARGET bind flag is set.
+ * On Present, it is copied to the actual display
+ * surface and the contents become undefined.
+ * D3D may internally use multiple buffers, but you can't observe this, except
+ * by looking at the buffer contents after Present (but those are undefined).
+ * If it uses multiple buffers internally, then it will normally use BufferCount buffers
+ * (this has latency implications).
+ * Discard mode seems to internally use a single buffer in windowed mode,
+ * even if DWM is enabled, and BufferCount buffers in fullscreen mode.
+ *
+ * In sequential mode, the runtime alllocates BufferCount buffers.
+ * You can get each with GetBuffers(n).
+ * GetBuffers(0) ALWAYS points to the backbuffer to be presented and has the
+ * same usage constraints as the discard mode.
+ * GetBuffer(n) with n > 0 points to resources that are identical to buffer 0, but
+ * are classified as "read-only resources" (due to DXGI_USAGE_READ_ONLY),
+ * meaning that you can't create render target views on them, or use them as
+ * a CopyResource/CopySubresourceRegion  destination.
+ * It appears the only valid operation is to use them as a source for CopyResource
+ * and CopySubresourceRegion as well as just waiting for them to become
+ * buffer 0 again.
+ * Buffer n - 1 is always displayed on screen.
+ * When you call Present(), the contents of the buffers are rotated, so that buffer 0
+ * goes to buffer n - 1, and is thus displayed, and buffer 1 goes to buffer 0, becomes
+ * the accessible back buffer.
+ * The resources themselves are NOT rotated, so that you can still render on the
+ * same ID3D11Texture2D*, and views based on it, that you got before Present().
+ *
+ * Present seems to happen by either copying the relevant buffer into the window,
+ * or alternatively making it the current one, either by programming the CRTC or
+ * by sending the resource name to the DWM compositor.
+ *
+ * Hence, you can call GetBuffer(0) once and keep using the same ID3D11Texture2D*
+ * and ID3D11RenderTargetView* (and other views if needed) you got from it.
+ *
+ * If the window gets resized, DXGI will then "emulate" all successive presentations,
+ * by using a stretched blit automatically.
+ * Thus, you should handle WM_SIZE and call ResizeBuffers to update the DXGI
+ * swapchain buffers size to the new window size.
+ * Doing so requires you to release all GetBuffers() results and anything referencing
+ * them, including views and Direct3D11 deferred context command lists (this is
+ * documented).
+ *
+ * How does Microsoft implement the rotation behavior?
+ * It turns out that it does it by calling RotateResourceIdentitiesDXGI in the user-mode
+ * DDI driver.
+ * This will rotate the kernel buffer handle, or possibly rotate the GPU virtual memory
+ * mappings.
+ *
+ * The reason this is done by driver instead of by the runtime appears to be that
+ * this is necessary to support driver-provided command list support, since otherwise
+ * the command list would not always target the current backbuffer, since it would
+ * be done at the driver level, while only the runtime knows about the rotation.
+ *
+ * OK, so how do we implement this in Gallium?
+ *
+ * There are three strategies:
+ * 1. Use a single buffer, and always copy it to a window system provided buffer, or
+ *    just give the buffer to the window system if it supports that
+ * 2. Rotate the buffers in the D3D1x implementation, and recreate and rebind the views.
+ *     Don't support driver-provided command lists
+ * 3. Add this rotation functionality to the Gallium driver, with the idea that it would rotate
+ *    remap GPU virtual memory, so that virtual address are unchanged, but the physical
+ *    ones are rotated (so that pushbuffers remain valid).
+ *    If the driver does not support this, either fall back to (1), or have a layer doing this,
+ *    putting a deferred context layer over this intermediate layer.
+ *
+ * (2) is not acceptable since it prevents an optimal implementation.
+ *  (3) is the ideal solution, but it is complicated.
+ *
+ * Hence, we implement (1) for now, and will switch to (3) later.
+ *
+ * Note that (1) doesn't really work for DXGI_SWAP_EFFECT_SEQUENTIAL with more
+ * than one buffer, so we just pretend we got asked for a single buffer in that case
+ * Fortunately, no one seems to rely on that, so we'll just not implement it at first, and
+ * later perform the rotation with blits.
+ * Once we switch to (3), we'll just use real rotation to do it..
+ *
+ * DXGI_SWAP_EFFECT_SEQUENTIAL with more than one buffer is of dubious use
+ * anyway, since you can only render or write to buffer 0, and other buffers can apparently
+ * be used only as sources for copies.
+ * I was unable to find any code using it either in DirectX SDK examples, or on the web.
+ *
+ * It seems the only reason you would use it is to not have to redraw from scratch, while
+ * also possibly avoid a copy compared to BufferCount == 1, assuming that your
+ * application is OK with having to redraw starting not from the last frame, but from
+ * one/two/more frames behind it.
+ *
+ * A better design would forbid the user specifying BufferCount explicitly, and
+ * would instead let the application give an upper bound on how old the buffer can
+ * become after presentation, with "infinite" being equivalent to discard.
+ * The runtime would then tell the application with frame number the buffer switched to
+ * after present.
+ * In addition, in a better design, the application would be allowed to specify the
+ * number of buffers available, having all them usable for rendering, so that things
+ * like video players could efficiently decode frames in parallel.
+ * Present would in such a better design gain a way to specify the number of buffers
+ * to present.
+ *
+ * Other miscellaneous info:
+ * DXGI_PRESENT_DO_NOT_SEQUENCE causes DXGI to hold the frame for another
+ * vblank interval without rotating the resource data.
+ *
+ * References:
+ * "DXGI Overview" in MSDN
+ * IDXGISwapChain documentation on MSDN
+ * "RotateResourceIdentitiesDXGI" on MSDN
+ * http://forums.xna.com/forums/p/42362/266016.aspx
+ */
+
+static float quad_data[] = {
+	-1, -1, 0, 0,
+	-1, 1, 0, 1,
+	1, 1, 1, 1,
+	1, -1, 1, 0,
+};
+
+struct dxgi_blitter
+{
+	pipe_context* pipe;
+	bool normalized;
+	void* fs;
+	void* vs;
+	void* sampler[2];
+	void* elements;
+	void* blend;
+	void* rasterizer;
+	void* zsa;
+	struct pipe_clip_state clip;
+	struct pipe_vertex_buffer vbuf;
+	struct pipe_draw_info draw;
+
+	dxgi_blitter(pipe_context* pipe)
+	: pipe(pipe)
+	{
+		//normalized = !!pipe->screen->get_param(pipe, PIPE_CAP_NPOT_TEXTURES);
+		// TODO: need to update buffer in unnormalized case
+		normalized = true;
+
+		struct pipe_rasterizer_state rs_state;
+		memset(&rs_state, 0, sizeof(rs_state));
+		rs_state.cull_face = PIPE_FACE_NONE;
+		rs_state.gl_rasterization_rules = 1;
+		rs_state.flatshade = 1;
+		rasterizer = pipe->create_rasterizer_state(pipe, &rs_state);
+
+		struct pipe_blend_state blendd;
+		blendd.rt[0].colormask = PIPE_MASK_RGBA;
+		blend = pipe->create_blend_state(pipe, &blendd);
+
+		struct pipe_depth_stencil_alpha_state zsad;
+		memset(&zsad, 0, sizeof(zsad));
+		zsa = pipe->create_depth_stencil_alpha_state(pipe, &zsad);
+
+		struct pipe_vertex_element velem[2];
+		memset(&velem[0], 0, sizeof(velem[0]) * 2);
+		velem[0].src_offset = 0;
+		velem[0].src_format = PIPE_FORMAT_R32G32_FLOAT;
+		velem[1].src_offset = 8;
+		velem[1].src_format = PIPE_FORMAT_R32G32_FLOAT;
+		elements = pipe->create_vertex_elements_state(pipe, 2, &velem[0]);
+
+		for(unsigned stretch = 0; stretch < 2; ++stretch)
+		{
+			struct pipe_sampler_state sampler_state;
+			memset(&sampler_state, 0, sizeof(sampler_state));
+			sampler_state.min_img_filter = stretch ? PIPE_TEX_FILTER_LINEAR : PIPE_TEX_FILTER_NEAREST;
+			sampler_state.mag_img_filter = stretch ? PIPE_TEX_FILTER_LINEAR : PIPE_TEX_FILTER_NEAREST;
+			sampler_state.wrap_s = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+			sampler_state.wrap_t = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+			sampler_state.wrap_r = PIPE_TEX_WRAP_CLAMP_TO_EDGE;
+			sampler_state.normalized_coords = normalized;
+
+			sampler[stretch] = pipe->create_sampler_state(pipe, &sampler_state);
+		}
+
+		fs = util_make_fragment_tex_shader(pipe, normalized ? TGSI_TEXTURE_2D : TGSI_TEXTURE_RECT, TGSI_INTERPOLATE_LINEAR);
+
+		const unsigned semantic_names[] = { TGSI_SEMANTIC_POSITION, TGSI_SEMANTIC_GENERIC };
+		const unsigned semantic_indices[] = { 0, 0 };
+		vs = util_make_vertex_passthrough_shader(pipe, 2, semantic_names, semantic_indices);
+
+		vbuf.buffer = pipe_buffer_create(pipe->screen, PIPE_BIND_VERTEX_BUFFER, sizeof(quad_data));
+		vbuf.buffer_offset = 0;
+		vbuf.max_index = ~0;
+		vbuf.stride = 4 * sizeof(float);
+		pipe_buffer_write(pipe, vbuf.buffer, 0, sizeof(quad_data), quad_data);
+
+		memset(&clip, 0, sizeof(clip));
+
+		memset(&draw, 0, sizeof(draw));
+		draw.mode = PIPE_PRIM_QUADS;
+		draw.count = 4;
+		draw.instance_count = 1;
+		draw.max_index = ~0;
+	}
+
+	void blit(struct pipe_surface* surf, struct pipe_sampler_view* view, unsigned x, unsigned y, unsigned w, unsigned h)
+	{
+		struct pipe_framebuffer_state fb;
+		memset(&fb, 0, sizeof(fb));
+		fb.nr_cbufs = 1;
+		fb.cbufs[0] = surf;
+		fb.width = surf->width;
+		fb.height = surf->height;
+
+		struct pipe_viewport_state viewport;
+		float half_width = w * 0.5f;
+		float half_height = h * 0.5f;
+		viewport.scale[0] = half_width;
+		viewport.scale[1] = half_height;
+		viewport.scale[2] = 1.0f;
+		viewport.scale[3] = 1.0f;
+		viewport.translate[0] = x + half_width;
+		viewport.translate[1] = y + half_height;
+		viewport.translate[2] = 0.0f;
+		viewport.translate[3] = 1.0f;
+
+		bool stretch = view->texture->width0 != w || view->texture->height0 != h;
+		if(pipe->render_condition)
+			pipe->render_condition(pipe, 0, 0);
+		pipe->set_framebuffer_state(pipe, &fb);
+		pipe->bind_fragment_sampler_states(pipe, 1, &sampler[stretch]);
+		pipe->set_viewport_state(pipe, &viewport);
+		pipe->set_clip_state(pipe, &clip);
+		pipe->bind_rasterizer_state(pipe, rasterizer);
+		pipe->bind_depth_stencil_alpha_state(pipe, zsa);
+		pipe->bind_blend_state(pipe, blend);
+		pipe->bind_vertex_elements_state(pipe, elements);
+		pipe->set_vertex_buffers(pipe, 1, &vbuf);
+		pipe->bind_fs_state(pipe, fs);
+		pipe->bind_vs_state(pipe, vs);
+		if(pipe->bind_gs_state)
+			pipe->bind_gs_state(pipe, 0);
+		if(pipe->bind_stream_output_state)
+			pipe->bind_stream_output_state(pipe, 0);
+		pipe->set_fragment_sampler_views(pipe, 1, &view);
+
+		pipe->draw_vbo(pipe, &draw);
+	}
+
+	~dxgi_blitter()
+	{
+		pipe->delete_blend_state(pipe, blend);
+		pipe->delete_rasterizer_state(pipe, rasterizer);
+		pipe->delete_depth_stencil_alpha_state(pipe, zsa);
+		pipe->delete_sampler_state(pipe, sampler[0]);
+		pipe->delete_sampler_state(pipe, sampler[1]);
+		pipe->delete_vertex_elements_state(pipe, elements);
+		pipe->delete_vs_state(pipe, vs);
+		pipe->delete_fs_state(pipe, fs);
+		pipe->screen->resource_destroy(pipe->screen, vbuf.buffer);
+	}
+};
+
+struct GalliumDXGISwapChain : public GalliumDXGIObject<IDXGISwapChain, GalliumDXGIFactory>
+{
+	ComPtr<IDXGIDevice>dxgi_device;
+	ComPtr<IGalliumDevice>gallium_device;
+	ComPtr<GalliumDXGIAdapter> adapter;
+	ComPtr<IDXGIOutput> target;
+
+	struct native_surface* surface;
+	const struct native_config* config;
+
+	struct pipe_resource* resources[NUM_NATIVE_ATTACHMENTS];
+	int width;
+	int height;
+	unsigned seq_num;
+	bool ever_validated;
+	bool needs_validation;
+	unsigned present_count;
+
+	ComPtr<IDXGISurface> buffer0;
+	struct pipe_resource* gallium_buffer0;
+	struct pipe_sampler_view* gallium_buffer0_view;
+
+	DXGI_SWAP_CHAIN_DESC desc;
+
+	struct pipe_context* pipe;
+	bool owns_pipe;
+
+	BOOL fullscreen;
+
+	std::auto_ptr<dxgi_blitter> blitter;
+	bool formats_compatible;
+
+	GalliumDXGISwapChain(GalliumDXGIFactory* factory, IUnknown* p_device, const DXGI_SWAP_CHAIN_DESC& p_desc)
+	: GalliumDXGIObject(factory), desc(p_desc)
+	{
+		HRESULT hr;
+
+		hr = p_device->QueryInterface(IID_IGalliumDevice, (void**)&gallium_device);
+		if(!SUCCEEDED(hr))
+			throw hr;
+
+		hr = p_device->QueryInterface(IID_IDXGIDevice, (void**)&dxgi_device);
+		if(!SUCCEEDED(hr))
+			throw hr;
+
+		hr = dxgi_device->GetAdapter((IDXGIAdapter**)&adapter);
+		if(!SUCCEEDED(hr))
+			throw hr;
+
+		void* win = factory->resolver(factory->resolver_cookie, desc.OutputWindow);
+
+		unsigned config_num;
+		if(!strcmp(factory->platform->name, "X11"))
+		{
+			XWindowAttributes xwa;
+			XGetWindowAttributes((Display*)factory->display, (Window)win, &xwa);
+			config_num = adapter->configs_by_native_visual_id[xwa.visual->visualid];
+		}
+		else
+		{
+			enum pipe_format format = dxgi_to_pipe_format[desc.BufferDesc.Format];
+			if(!adapter->configs_by_pipe_format.count(format))
+			{
+				if(adapter->configs_by_pipe_format.empty())
+					throw E_FAIL;
+				// TODO: choose the best match
+				format = (pipe_format)adapter->configs_by_pipe_format.begin()->first;
+			}
+			// TODO: choose the best config
+			config_num = adapter->configs_by_pipe_format.find(format)->second;
+		}
+
+		config = adapter->configs[config_num];
+		surface = adapter->display->create_window_surface(adapter->display, (EGLNativeWindowType)win, config);
+		surface->user_data = this;
+
+		width = 0;
+		height = 0;
+		seq_num = 0;
+		present_count = 0;
+		needs_validation = true;
+		ever_validated = false;
+
+		if(desc.SwapEffect == DXGI_SWAP_EFFECT_SEQUENTIAL && desc.BufferCount != 1)
+		{
+			std::cerr << "Gallium DXGI: if DXGI_SWAP_EFFECT_SEQUENTIAL is specified, only BufferCount == 1 is implemented, but " << desc.BufferCount  << " was specified: ignoring this" << std::endl;
+			// change the returned desc, so that the application might perhaps notice what we did and react well
+			desc.BufferCount = 1;
+		}
+
+		pipe = gallium_device->GetGalliumContext();
+		owns_pipe = false;
+		if(!pipe)
+		{
+			pipe = adapter->display->screen->context_create(adapter->display->screen, 0);
+			owns_pipe = true;
+		}
+
+		blitter.reset(new dxgi_blitter(pipe));
+
+		formats_compatible = util_is_format_compatible(
+				util_format_description(dxgi_to_pipe_format[desc.BufferDesc.Format]),
+				util_format_description(config->color_format));
+	}
+
+	~GalliumDXGISwapChain()
+	{
+		if(owns_pipe)
+			pipe->destroy(pipe);
+	}
+
+        virtual HRESULT STDMETHODCALLTYPE GetDevice(
+            __in  REFIID riid,
+            __out  void **ppDevice)
+        {
+        	return dxgi_device->QueryInterface(riid, ppDevice);
+        }
+
+        HRESULT create_buffer0()
+        {
+        	HRESULT hr;
+		ComPtr<IDXGISurface> new_buffer0;
+		DXGI_USAGE usage = DXGI_USAGE_BACK_BUFFER | DXGI_USAGE_RENDER_TARGET_OUTPUT;
+		if(desc.SwapEffect == DXGI_SWAP_EFFECT_DISCARD)
+			usage |= DXGI_USAGE_DISCARD_ON_PRESENT;
+		// for our blitter
+		usage |= DXGI_USAGE_SHADER_INPUT;
+
+		DXGI_SURFACE_DESC surface_desc;
+		surface_desc.Format = desc.BufferDesc.Format;
+		surface_desc.Width = desc.BufferDesc.Width;
+		surface_desc.Height = desc.BufferDesc.Height;
+		surface_desc.SampleDesc = desc.SampleDesc;
+		hr = dxgi_device->CreateSurface(&surface_desc, 1, usage, 0, &new_buffer0);
+		if(!SUCCEEDED(hr))
+			return hr;
+
+		ComPtr<IGalliumResource> gallium_resource;
+		hr = new_buffer0->QueryInterface(IID_IGalliumResource, (void**)&gallium_resource);
+		if(!SUCCEEDED(hr))
+			return hr;
+
+		struct pipe_resource* new_gallium_buffer0 = gallium_resource->GetGalliumResource();
+		if(!new_gallium_buffer0)
+			return E_FAIL;
+
+		buffer0.reset(new_buffer0.steal());
+		gallium_buffer0 = new_gallium_buffer0;
+		struct pipe_sampler_view templat;
+		memset(&templat, 0, sizeof(templat));
+		templat.texture = gallium_buffer0;
+		templat.swizzle_r = 0;
+		templat.swizzle_g = 1;
+		templat.swizzle_b = 2;
+		templat.swizzle_a = 3;
+		templat.format = gallium_buffer0->format;
+		gallium_buffer0_view = pipe->create_sampler_view(pipe, gallium_buffer0, &templat);
+		return S_OK;
+        }
+
+	bool validate()
+	{
+		unsigned new_seq_num;
+		needs_validation = false;
+
+		if(!surface->validate(surface, 1 << NATIVE_ATTACHMENT_BACK_LEFT, &new_seq_num, resources, &width, &height))
+			return false;
+
+		if(!ever_validated || seq_num != new_seq_num)
+		{
+			seq_num = new_seq_num;
+			ever_validated = true;
+		}
+		return true;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE Present(
+		UINT SyncInterval,
+		UINT Flags)
+	{
+		if(Flags & DXGI_PRESENT_TEST)
+			return S_OK;
+
+		if(!buffer0)
+		{
+			HRESULT hr = create_buffer0();
+			if(!SUCCEEDED(hr))
+				return hr;
+		}
+
+		if(needs_validation)
+		{
+			if(!validate())
+				return DXGI_ERROR_DEVICE_REMOVED;
+		}
+
+		bool db = !!(config->buffer_mask & NATIVE_ATTACHMENT_BACK_LEFT);
+		struct pipe_resource* dst = resources[db ? NATIVE_ATTACHMENT_BACK_LEFT : NATIVE_ATTACHMENT_FRONT_LEFT];
+		struct pipe_resource* src = gallium_buffer0;
+		struct pipe_surface* dst_surface = 0;
+
+		/* TODO: sharing the context for blitting won't work correctly if queries are active
+		 * Hopefully no one is crazy enough to keep queries active while presenting, expecting
+		 * sensible results.
+		 * We could alternatively force using another context, but that might cause inefficiency issues
+		 */
+
+		/* Windows DXGI does not scale in an aspect-preserving way, but we do this
+		 * by default, since we can and it's usually what you want
+		 */
+		unsigned blit_x, blit_y, blit_w, blit_h;
+		float black[4] = {0, 0, 0, 0};
+
+		if(!formats_compatible || src->width0 != dst->width0 || dst->width0 != src->width0)
+			dst_surface = pipe->screen->get_tex_surface(pipe->screen, dst, 0, 0, 0, PIPE_BIND_RENDER_TARGET);
+
+		int delta = src->width0 * dst->height0 - dst->width0 * src->height0;
+		if(delta > 0)
+		{
+			blit_w = dst->width0;
+			blit_h = dst->width0 * src->height0 / src->width0;
+		}
+		else if(delta < 0)
+		{
+			blit_w = dst->height0 * src->width0 / src->height0;
+			blit_h = dst->height0;
+		}
+		else
+		{
+			blit_w = dst->width0;
+			blit_h = dst->height0;
+		}
+
+		blit_x = (dst->width0 - blit_w) >> 1;
+		blit_y = (dst->height0 - blit_h) >> 1;
+
+		if(blit_x)
+			pipe->clear_render_target(pipe, dst_surface, black, 0, 0, blit_x, dst->height0);
+		if(blit_y)
+			pipe->clear_render_target(pipe, dst_surface, black, 0, 0, dst->width0, blit_y);
+
+		if(formats_compatible && blit_w == src->width0 && blit_h == src->height0)
+		{
+			pipe_subresource sr;
+			sr.face = 0;
+			sr.level = 0;
+			pipe->resource_copy_region(pipe, dst, sr, 0, 0, 0, src, sr, 0, 0, 0, blit_w, blit_h);
+		}
+		else
+		{
+			blitter->blit(dst_surface, gallium_buffer0_view, blit_x, blit_y, blit_w, blit_h);
+			if(!owns_pipe)
+				gallium_device->RestoreGalliumState();
+		}
+
+		if(blit_w != dst->width0)
+			pipe->clear_render_target(pipe, dst_surface, black, blit_x + blit_w, 0, dst->width0 - blit_x - blit_w, dst->height0);
+		if(blit_h != dst->height0)
+			pipe->clear_render_target(pipe, dst_surface, black, 0, blit_y + blit_h, dst->width0, dst->height0 - blit_y - blit_h);
+
+		if(dst_surface)
+			pipe->screen->tex_surface_destroy(dst_surface);
+
+		if(db)
+		{
+			if(!surface->swap_buffers(surface))
+				return DXGI_ERROR_DEVICE_REMOVED;
+		}
+		else
+		{
+			if(!surface->flush_frontbuffer(surface))
+				return DXGI_ERROR_DEVICE_REMOVED;
+		}
+
+		++present_count;
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetBuffer(
+		    UINT Buffer,
+		    __in  REFIID riid,
+		    __out  void **ppSurface)
+	{
+		if(Buffer > 0)
+		{
+			if(desc.SwapEffect == DXGI_SWAP_EFFECT_SEQUENTIAL)
+				std::cerr << "DXGI unimplemented: GetBuffer(n) with n > 0 not supported, returning buffer 0 instead!" << std::endl;
+			else
+				std::cerr << "DXGI error: in GetBuffer(n), n must be 0 for DXGI_SWAP_EFFECT_DISCARD\n" << std::endl;
+		}
+
+		if(!buffer0)
+		{
+			HRESULT hr = create_buffer0();
+			if(!SUCCEEDED(hr))
+				return hr;
+		}
+		return buffer0->QueryInterface(riid, ppSurface);
+	}
+
+	/* TODO: implement somehow */
+	virtual HRESULT STDMETHODCALLTYPE SetFullscreenState(
+		BOOL Fullscreen,
+		__in_opt  IDXGIOutput *pTarget)
+	{
+		fullscreen = Fullscreen;
+		target = pTarget;
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetFullscreenState(
+		__out  BOOL *pFullscreen,
+		__out  IDXGIOutput **ppTarget)
+	{
+		if(pFullscreen)
+			*pFullscreen = fullscreen;
+		if(ppTarget)
+			*ppTarget = target.ref();
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetDesc(
+		__out  DXGI_SWAP_CHAIN_DESC *pDesc)
+	{
+		*pDesc = desc;
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE ResizeBuffers(
+		UINT BufferCount,
+		UINT Width,
+		UINT Height,
+		DXGI_FORMAT NewFormat,
+		UINT SwapChainFlags)
+	{
+		if(buffer0)
+		{
+			buffer0.p->AddRef();
+			ULONG v = buffer0.p->Release();
+			// we must fail if there are any references to buffer0 other than ours
+			if(v > 1)
+				return E_FAIL;
+			pipe_sampler_view_reference(&gallium_buffer0_view, 0);
+			buffer0 = (IUnknown*)NULL;
+			gallium_buffer0 = 0;
+		}
+
+		if(desc.SwapEffect != DXGI_SWAP_EFFECT_SEQUENTIAL)
+			desc.BufferCount = BufferCount;
+		desc.BufferDesc.Format = NewFormat;
+		desc.BufferDesc.Width = Width;
+		desc.BufferDesc.Height = Height;
+		desc.Flags = SwapChainFlags;
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE ResizeTarget(
+		const DXGI_MODE_DESC *pNewTargetParameters)
+	{
+		/* TODO: implement */
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetContainingOutput(
+			__out  IDXGIOutput **ppOutput)
+	{
+		*ppOutput = adapter->outputs[0].ref();
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetFrameStatistics(
+			__out  DXGI_FRAME_STATISTICS *pStats)
+	{
+		memset(pStats, 0, sizeof(*pStats));
+#ifdef _WIN32
+		QueryPerformanceCounter(&pStats->SyncQPCTime);
+#endif
+		pStats->PresentCount = present_count;
+		pStats->PresentRefreshCount = present_count;
+		pStats->SyncRefreshCount = present_count;
+		return S_OK;
+	}
+
+	virtual HRESULT STDMETHODCALLTYPE GetLastPresentCount(
+		__out  UINT *pLastPresentCount)
+	{
+		*pLastPresentCount = present_count;
+		return S_OK;
+	}
+};
+
+static void GalliumDXGISwapChainRevalidate(IDXGISwapChain* swap_chain)
+{
+	((GalliumDXGISwapChain*)swap_chain)->needs_validation = true;
+}
+
+static HRESULT GalliumDXGIAdapterCreate(GalliumDXGIFactory* factory, const struct native_platform* platform, void* dpy, IDXGIAdapter1** pAdapter)
+{
+	try
+	{
+		*pAdapter = new GalliumDXGIAdapter(factory, platform, dpy);
+		return S_OK;
+	}
+	catch(HRESULT hr)
+	{
+		return hr;
+	}
+}
+
+static HRESULT GalliumDXGIOutputCreate(GalliumDXGIAdapter* adapter, const std::string& name, const struct native_connector* connector, IDXGIOutput** pOutput)
+{
+	try
+	{
+		*pOutput = new GalliumDXGIOutput(adapter, name, connector);
+		return S_OK;
+	}
+	catch(HRESULT hr)
+	{
+		return hr;
+	}
+}
+
+static HRESULT GalliumDXGISwapChainCreate(GalliumDXGIFactory* factory, IUnknown* device, const DXGI_SWAP_CHAIN_DESC& desc, IDXGISwapChain** pSwapChain)
+{
+	try
+	{
+		*pSwapChain = new GalliumDXGISwapChain(factory, device, desc);
+		return S_OK;
+	}
+	catch(HRESULT hr)
+	{
+		return hr;
+	}
+}
+
+struct dxgi_binding
+{
+	const struct native_platform* platform;
+	void* display;
+	PFNHWNDRESOLVER resolver;
+	void* resolver_cookie;
+};
+
+static dxgi_binding dxgi_default_binding;
+static __thread dxgi_binding dxgi_thread_binding;
+
+void STDMETHODCALLTYPE GalliumDXGIUseNothing()
+{
+	dxgi_thread_binding.platform = 0;
+	dxgi_thread_binding.display = 0;
+	dxgi_thread_binding.resolver = 0;
+	dxgi_thread_binding.resolver_cookie = 0;
+}
+
+#ifdef GALLIUM_DXGI_USE_X11
+void STDMETHODCALLTYPE GalliumDXGIUseX11Display(Display* dpy, PFNHWNDRESOLVER resolver, void* resolver_cookie)
+{
+	dxgi_thread_binding.platform = native_get_x11_platform();
+	dxgi_thread_binding.display = dpy;
+	dxgi_thread_binding.resolver = resolver;
+	dxgi_thread_binding.resolver_cookie = resolver_cookie;
+}
+#endif
+
+#ifdef GALLIUM_DXGI_USE_DRM
+void STDMETHODCALLTYPE GalliumDXGIUseDRMCard(int fd)
+{
+	dxgi_thread_binding.platform = native_get_drm_platform();
+	dxgi_thread_binding.display = (void*)fd;
+	dxgi_thread_binding.resolver = 0;
+	dxgi_thread_binding.resolver_cookie = 0;
+}
+#endif
+
+#ifdef GALLIUM_DXGI_USE_FBDEV
+void STDMETHODCALLTYPE GalliumDXGIUseFBDev(int fd)
+{
+	dxgi_thread_binding.platform = native_get_fbdev_platform();
+	dxgi_thread_binding.display = (void*)fd;
+	dxgi_thread_binding.resolver = 0;
+	dxgi_thread_binding.resolver_cookie = 0;
+}
+#endif
+
+#ifdef GALLIUM_DXGI_USE_GDI
+void STDMETHODCALLTYPE GalliumDXGIUseHDC(HDC hdc, PFNHWNDRESOLVER resolver, void* resolver_cookie)
+{
+	dxgi_thread_binding.platform = native_get_gdi_platform();
+	dxgi_thread_binding.display = (void*)hdc;
+	dxgi_thread_binding.resolver = resolver;
+	dxgi_thread_binding.resolver_cookie = resolver_cookie;
+}
+#endif
+
+void STDMETHODCALLTYPE GalliumDXGIMakeDefault()
+{
+	dxgi_default_binding = dxgi_thread_binding;
+}
+
+ /* TODO: why did Microsoft add this? should we do something different for DXGI 1.0 and 1.1?
+  * Or perhaps what they actually mean is "only create a single factory in your application"?
+  * TODO: should we use a singleton here, so we never have multiple DXGI objects for the same thing? */
+ HRESULT STDMETHODCALLTYPE  CreateDXGIFactory1(
+		__in   REFIID riid,
+		__out  void **ppFactory
+)
+ {
+	 GalliumDXGIFactory* factory;
+	 *ppFactory = 0;
+	 if(dxgi_thread_binding.platform)
+		 factory = new GalliumDXGIFactory(dxgi_thread_binding.platform, dxgi_thread_binding.display, dxgi_thread_binding.resolver, dxgi_thread_binding.resolver_cookie);
+	 else if(dxgi_default_binding.platform)
+		 factory = new GalliumDXGIFactory(dxgi_default_binding.platform, dxgi_default_binding.display, dxgi_default_binding.resolver, dxgi_default_binding.resolver_cookie);
+	 else
+		 factory = new GalliumDXGIFactory(native_get_x11_platform(), NULL, NULL, NULL);
+	 HRESULT hres = factory->QueryInterface(riid, ppFactory);
+	 factory->Release();
+	 return hres;
+ }
+
+ HRESULT STDMETHODCALLTYPE  CreateDXGIFactory(
+		 __in   REFIID riid,
+		 __out  void **ppFactory
+)
+ {
+	 return CreateDXGIFactory1(riid, ppFactory);
+ }
diff --git a/src/gallium/state_trackers/d3d1x/dxgi/src/dxgi_private.h b/src/gallium/state_trackers/d3d1x/dxgi/src/dxgi_private.h
new file mode 100644
index 0000000000..30a6932635
--- /dev/null
+++ b/src/gallium/state_trackers/d3d1x/dxgi/src/dxgi_private.h
@@ -0,0 +1,50 @@
+/**************************************************************************
+ *
+ * Copyright 2010 Luca Barbieri
+ *
+ * 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 (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 NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) 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 DXGI_PRIVATE_H_
+#define DXGI_PRIVATE_H_
+
+#include <vector>
+#include <string>
+#include <sstream>
+
+#include "d3d1xstutil.h"
+
+#include <dxgi.h>
+#include <d3d11.h>
+#include <galliumcom.h>
+#include <galliumdxgi.h>
+#include <specstrings.h>
+
+struct native_display;
+
+struct pipe_screen *
+dxgi_loader_create_drm_screen(struct native_display* dpy, const char *name, int fd);
+
+struct pipe_screen *
+dxgi_loader_create_sw_screen(struct native_display* dpy, struct sw_winsys *ws);
+
+#endif /* DXGI_PRIVATE_H_ */