dlls/d3dx9_36/render.c - wine - Git at Google

 /*
  * Copyright (C) 2012 Józef Kucia
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  *
  */

 #include "wine/debug.h"
 #include "d3dx9_36_private.h"

 WINE_DEFAULT_DEBUG_CHANNEL(d3dx);

 struct render_to_surface
 {
     ID3DXRenderToSurface ID3DXRenderToSurface_iface;
     LONG ref;

     IDirect3DDevice9 *device;
     D3DXRTS_DESC desc;

     IDirect3DSurface9 *dst_surface;

     IDirect3DSurface9 *render_target;
     IDirect3DSurface9 *depth_stencil;

     DWORD num_render_targets;
     D3DVIEWPORT9 previous_viewport;
     IDirect3DSurface9 **previous_render_targets;
     IDirect3DSurface9 *previous_depth_stencil;
 };

 static inline struct render_to_surface *impl_from_ID3DXRenderToSurface(ID3DXRenderToSurface *iface)
 {
     return CONTAINING_RECORD(iface, struct render_to_surface, ID3DXRenderToSurface_iface);
 }

 static void restore_previous_device_state(struct render_to_surface *render)
 {
     unsigned int i;

     for (i = 0; i < render->num_render_targets; i++)
     {
         IDirect3DDevice9_SetRenderTarget(render->device, i, render->previous_render_targets[i]);
         if (render->previous_render_targets[i])
             IDirect3DSurface9_Release(render->previous_render_targets[i]);
         render->previous_render_targets[i] = NULL;
     }

     IDirect3DDevice9_SetDepthStencilSurface(render->device, render->previous_depth_stencil);
     if (render->previous_depth_stencil)
     {
         IDirect3DSurface9_Release(render->previous_depth_stencil);
         render->previous_depth_stencil = NULL;
     }

     IDirect3DDevice9_SetViewport(render->device, &render->previous_viewport);
 }

 static HRESULT WINAPI D3DXRenderToSurface_QueryInterface(ID3DXRenderToSurface *iface,
                                                          REFIID riid,
                                                          void **out)
 {
     TRACE("iface %p, riid %s, out %p\n", iface, debugstr_guid(riid), out);

     if (IsEqualGUID(riid, &IID_ID3DXRenderToSurface)
             || IsEqualGUID(riid, &IID_IUnknown))
     {
         IUnknown_AddRef(iface);
         *out = iface;
         return S_OK;
     }

     WARN("%s not implemented, returning E_NOINTERFACE\n", debugstr_guid(riid));

     *out = NULL;
     return E_NOINTERFACE;
 }

 static ULONG WINAPI D3DXRenderToSurface_AddRef(ID3DXRenderToSurface *iface)
 {
     struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);
     ULONG ref = InterlockedIncrement(&render->ref);

     TRACE("%p increasing refcount to %u\n", iface, ref);

     return ref;
 }

 static ULONG WINAPI D3DXRenderToSurface_Release(ID3DXRenderToSurface *iface)
 {
     struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);
     ULONG ref = InterlockedDecrement(&render->ref);
     unsigned int i;

     TRACE("%p decreasing refcount to %u\n", iface, ref);

     if (!ref)
     {
         if (render->dst_surface) IDirect3DSurface9_Release(render->dst_surface);

         if (render->render_target) IDirect3DSurface9_Release(render->render_target);
         if (render->depth_stencil) IDirect3DSurface9_Release(render->depth_stencil);

         for (i = 0; i < render->num_render_targets; i++)
         {
             if (render->previous_render_targets[i])
                 IDirect3DSurface9_Release(render->previous_render_targets[i]);
         }

         HeapFree(GetProcessHeap(), 0, render->previous_render_targets);

         if (render->previous_depth_stencil) IDirect3DSurface9_Release(render->previous_depth_stencil);

         IDirect3DDevice9_Release(render->device);

         HeapFree(GetProcessHeap(), 0, render);
     }

     return ref;
 }

 static HRESULT WINAPI D3DXRenderToSurface_GetDevice(ID3DXRenderToSurface *iface,
                                                     IDirect3DDevice9 **device)
 {
     struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);

     TRACE("(%p)->(%p)\n", iface, device);

     if (!device) return D3DERR_INVALIDCALL;

     IDirect3DDevice9_AddRef(render->device);
     *device = render->device;
     return D3D_OK;
 }

 static HRESULT WINAPI D3DXRenderToSurface_GetDesc(ID3DXRenderToSurface *iface,
                                                   D3DXRTS_DESC *desc)
 {
     struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);

     TRACE("(%p)->(%p)\n", iface, desc);

     if (!desc) return D3DERR_INVALIDCALL;

     *desc = render->desc;
     return D3D_OK;
 }

 static HRESULT WINAPI D3DXRenderToSurface_BeginScene(ID3DXRenderToSurface *iface,
                                                      IDirect3DSurface9 *surface,
                                                      const D3DVIEWPORT9 *viewport)
 {
     struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);
     unsigned int i;
     IDirect3DDevice9 *device;
     D3DSURFACE_DESC surface_desc;
     HRESULT hr = D3DERR_INVALIDCALL;
     D3DMULTISAMPLE_TYPE multi_sample_type = D3DMULTISAMPLE_NONE;
     DWORD multi_sample_quality = 0;

     TRACE("(%p)->(%p, %p)\n", iface, surface, viewport);

     if (!surface || render->dst_surface) return D3DERR_INVALIDCALL;

     IDirect3DSurface9_GetDesc(surface, &surface_desc);
     if (surface_desc.Format != render->desc.Format
             || surface_desc.Width != render->desc.Width
             || surface_desc.Height != render->desc.Height)
         return D3DERR_INVALIDCALL;

     if (viewport)
     {
         if (viewport->X > render->desc.Width || viewport->Y > render->desc.Height
                 || viewport->X + viewport->Width > render->desc.Width
                 || viewport->Y + viewport->Height > render->desc.Height)
             return D3DERR_INVALIDCALL;

         if (!(surface_desc.Usage & D3DUSAGE_RENDERTARGET)
                 && (viewport->X != 0 || viewport->Y != 0
                 || viewport->Width != render->desc.Width
                 || viewport->Height != render->desc.Height))
             return D3DERR_INVALIDCALL;
     }

     device = render->device;

     /* save device state */
     IDirect3DDevice9_GetViewport(device, &render->previous_viewport);

     for (i = 0; i < render->num_render_targets; i++)
     {
         hr = IDirect3DDevice9_GetRenderTarget(device, i, &render->previous_render_targets[i]);
         if (FAILED(hr)) render->previous_render_targets[i] = NULL;
     }

     hr = IDirect3DDevice9_GetDepthStencilSurface(device, &render->previous_depth_stencil);
     if (FAILED(hr)) render->previous_depth_stencil = NULL;

     /* prepare for rendering to surface */
     for (i = 1; i < render->num_render_targets; i++)
         IDirect3DDevice9_SetRenderTarget(device, i, NULL);

     if (surface_desc.Usage & D3DUSAGE_RENDERTARGET)
     {
         hr = IDirect3DDevice9_SetRenderTarget(device, 0, surface);
         multi_sample_type = surface_desc.MultiSampleType;
         multi_sample_quality = surface_desc.MultiSampleQuality;
     }
     else
     {
         hr = IDirect3DDevice9_CreateRenderTarget(device, render->desc.Width, render->desc.Height,
                 render->desc.Format, multi_sample_type, multi_sample_quality, FALSE,
                 &render->render_target, NULL);
         if (FAILED(hr)) goto cleanup;
         hr = IDirect3DDevice9_SetRenderTarget(device, 0, render->render_target);
     }

     if (FAILED(hr)) goto cleanup;

     if (render->desc.DepthStencil)
     {
         hr = IDirect3DDevice9_CreateDepthStencilSurface(device, render->desc.Width, render->desc.Height,
                 render->desc.DepthStencilFormat, multi_sample_type, multi_sample_quality, TRUE,
                 &render->depth_stencil, NULL);
     }
     else render->depth_stencil = NULL;

     if (FAILED(hr)) goto cleanup;

     hr = IDirect3DDevice9_SetDepthStencilSurface(device, render->depth_stencil);
     if (FAILED(hr)) goto cleanup;

     if (viewport) IDirect3DDevice9_SetViewport(device, viewport);

     IDirect3DSurface9_AddRef(surface);
     render->dst_surface = surface;
     return IDirect3DDevice9_BeginScene(device);

 cleanup:
     restore_previous_device_state(render);

     if (render->dst_surface) IDirect3DSurface9_Release(render->dst_surface);
     render->dst_surface = NULL;

     if (render->render_target) IDirect3DSurface9_Release(render->render_target);
     render->render_target = NULL;
     if (render->depth_stencil) IDirect3DSurface9_Release(render->depth_stencil);
     render->depth_stencil = NULL;

     return hr;
 }

 static HRESULT WINAPI D3DXRenderToSurface_EndScene(ID3DXRenderToSurface *iface,
                                                    DWORD filter)
 {
     struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);
     HRESULT hr;

     TRACE("(%p)->(%#x)\n", iface, filter);

     if (!render->dst_surface) return D3DERR_INVALIDCALL;

     hr = IDirect3DDevice9_EndScene(render->device);

     /* copy render target data to destination surface, if needed */
     if (render->render_target)
     {
         hr = D3DXLoadSurfaceFromSurface(render->dst_surface, NULL, NULL,
                 render->render_target, NULL, NULL, filter, 0);
         if (FAILED(hr)) ERR("Copying render target data to surface failed %#x\n", hr);
     }

     restore_previous_device_state(render);

     /* release resources */
     if (render->render_target)
     {
         IDirect3DSurface9_Release(render->render_target);
         render->render_target = NULL;
     }

     if (render->depth_stencil)
     {
         IDirect3DSurface9_Release(render->depth_stencil);
         render->depth_stencil = NULL;
     }

     IDirect3DSurface9_Release(render->dst_surface);
     render->dst_surface = NULL;

     return hr;
 }

 static HRESULT WINAPI D3DXRenderToSurface_OnLostDevice(ID3DXRenderToSurface *iface)
 {
     FIXME("(%p)->(): stub\n", iface);
     return D3D_OK;
 }

 static HRESULT WINAPI D3DXRenderToSurface_OnResetDevice(ID3DXRenderToSurface *iface)
 {
     FIXME("(%p)->(): stub\n", iface);
     return D3D_OK;
 }

 static const ID3DXRenderToSurfaceVtbl d3dx_render_to_surface_vtbl =
 {
     /* IUnknown methods */
     D3DXRenderToSurface_QueryInterface,
     D3DXRenderToSurface_AddRef,
     D3DXRenderToSurface_Release,
     /* ID3DXRenderToSurface methods */
     D3DXRenderToSurface_GetDevice,
     D3DXRenderToSurface_GetDesc,
     D3DXRenderToSurface_BeginScene,
     D3DXRenderToSurface_EndScene,
     D3DXRenderToSurface_OnLostDevice,
     D3DXRenderToSurface_OnResetDevice
 };

 HRESULT WINAPI D3DXCreateRenderToSurface(IDirect3DDevice9 *device,
                                          UINT width,
                                          UINT height,
                                          D3DFORMAT format,
                                          BOOL depth_stencil,
                                          D3DFORMAT depth_stencil_format,
                                          ID3DXRenderToSurface **out)
 {
     HRESULT hr;
     D3DCAPS9 caps;
     struct render_to_surface *render;
     unsigned int i;

     TRACE("(%p, %u, %u, %#x, %d, %#x, %p)\n", device, width, height, format,
             depth_stencil, depth_stencil_format, out);

     if (!device || !out) return D3DERR_INVALIDCALL;

     hr = IDirect3DDevice9_GetDeviceCaps(device, &caps);
     if (FAILED(hr)) return hr;

     render = HeapAlloc(GetProcessHeap(), 0, sizeof(struct render_to_surface));
     if (!render) return E_OUTOFMEMORY;

     render->ID3DXRenderToSurface_iface.lpVtbl = &d3dx_render_to_surface_vtbl;
     render->ref = 1;

     render->desc.Width = width;
     render->desc.Height = height;
     render->desc.Format = format;
     render->desc.DepthStencil = depth_stencil;
     render->desc.DepthStencilFormat = depth_stencil_format;

     render->dst_surface = NULL;
     render->render_target = NULL;
     render->depth_stencil = NULL;

     render->num_render_targets = caps.NumSimultaneousRTs;
     render->previous_render_targets = HeapAlloc(GetProcessHeap(), 0,
             render->num_render_targets * sizeof(IDirect3DSurface9 *));
     if (!render->previous_render_targets)
     {
         HeapFree(GetProcessHeap(), 0, render);
         return E_OUTOFMEMORY;
     }

     for (i = 0; i < render->num_render_targets; i++)
         render->previous_render_targets[i] = NULL;
     render->previous_depth_stencil = NULL;

     IDirect3DDevice9_AddRef(device);
     render->device = device;

     *out = &render->ID3DXRenderToSurface_iface;
     return D3D_OK;
 }
	/*
	* Copyright (C) 2012 Józef Kucia
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
	*
	*/

	#include "wine/debug.h"
	#include "d3dx9_36_private.h"

	WINE_DEFAULT_DEBUG_CHANNEL(d3dx);

	struct render_to_surface
	{
	ID3DXRenderToSurface ID3DXRenderToSurface_iface;
	LONG ref;

	IDirect3DDevice9 *device;
	D3DXRTS_DESC desc;

	IDirect3DSurface9 *dst_surface;

	IDirect3DSurface9 *render_target;
	IDirect3DSurface9 *depth_stencil;

	DWORD num_render_targets;
	D3DVIEWPORT9 previous_viewport;
	IDirect3DSurface9 **previous_render_targets;
	IDirect3DSurface9 *previous_depth_stencil;
	};

	static inline struct render_to_surface impl_from_ID3DXRenderToSurface(ID3DXRenderToSurface iface)
	{
	return CONTAINING_RECORD(iface, struct render_to_surface, ID3DXRenderToSurface_iface);
	}

	static void restore_previous_device_state(struct render_to_surface *render)
	{
	unsigned int i;

	for (i = 0; i < render->num_render_targets; i++)
	{
	IDirect3DDevice9_SetRenderTarget(render->device, i, render->previous_render_targets[i]);
	if (render->previous_render_targets[i])
	IDirect3DSurface9_Release(render->previous_render_targets[i]);
	render->previous_render_targets[i] = NULL;
	}

	IDirect3DDevice9_SetDepthStencilSurface(render->device, render->previous_depth_stencil);
	if (render->previous_depth_stencil)
	{
	IDirect3DSurface9_Release(render->previous_depth_stencil);
	render->previous_depth_stencil = NULL;
	}

	IDirect3DDevice9_SetViewport(render->device, &render->previous_viewport);
	}

	static HRESULT WINAPI D3DXRenderToSurface_QueryInterface(ID3DXRenderToSurface *iface,
	REFIID riid,
	void **out)
	{
	TRACE("iface %p, riid %s, out %p\n", iface, debugstr_guid(riid), out);

	if (IsEqualGUID(riid, &IID_ID3DXRenderToSurface)
	\|\| IsEqualGUID(riid, &IID_IUnknown))
	{
	IUnknown_AddRef(iface);
	*out = iface;
	return S_OK;
	}

	WARN("%s not implemented, returning E_NOINTERFACE\n", debugstr_guid(riid));

	*out = NULL;
	return E_NOINTERFACE;
	}

	static ULONG WINAPI D3DXRenderToSurface_AddRef(ID3DXRenderToSurface *iface)
	{
	struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);
	ULONG ref = InterlockedIncrement(&render->ref);

	TRACE("%p increasing refcount to %u\n", iface, ref);

	return ref;
	}

	static ULONG WINAPI D3DXRenderToSurface_Release(ID3DXRenderToSurface *iface)
	{
	struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);
	ULONG ref = InterlockedDecrement(&render->ref);
	unsigned int i;

	TRACE("%p decreasing refcount to %u\n", iface, ref);

	if (!ref)
	{
	if (render->dst_surface) IDirect3DSurface9_Release(render->dst_surface);

	if (render->render_target) IDirect3DSurface9_Release(render->render_target);
	if (render->depth_stencil) IDirect3DSurface9_Release(render->depth_stencil);

	for (i = 0; i < render->num_render_targets; i++)
	{
	if (render->previous_render_targets[i])
	IDirect3DSurface9_Release(render->previous_render_targets[i]);
	}

	HeapFree(GetProcessHeap(), 0, render->previous_render_targets);

	if (render->previous_depth_stencil) IDirect3DSurface9_Release(render->previous_depth_stencil);

	IDirect3DDevice9_Release(render->device);

	HeapFree(GetProcessHeap(), 0, render);
	}

	return ref;
	}

	static HRESULT WINAPI D3DXRenderToSurface_GetDevice(ID3DXRenderToSurface *iface,
	IDirect3DDevice9 **device)
	{
	struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);

	TRACE("(%p)->(%p)\n", iface, device);

	if (!device) return D3DERR_INVALIDCALL;

	IDirect3DDevice9_AddRef(render->device);
	*device = render->device;
	return D3D_OK;
	}

	static HRESULT WINAPI D3DXRenderToSurface_GetDesc(ID3DXRenderToSurface *iface,
	D3DXRTS_DESC *desc)
	{
	struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);

	TRACE("(%p)->(%p)\n", iface, desc);

	if (!desc) return D3DERR_INVALIDCALL;

	*desc = render->desc;
	return D3D_OK;
	}

	static HRESULT WINAPI D3DXRenderToSurface_BeginScene(ID3DXRenderToSurface *iface,
	IDirect3DSurface9 *surface,
	const D3DVIEWPORT9 *viewport)
	{
	struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);
	unsigned int i;
	IDirect3DDevice9 *device;
	D3DSURFACE_DESC surface_desc;
	HRESULT hr = D3DERR_INVALIDCALL;
	D3DMULTISAMPLE_TYPE multi_sample_type = D3DMULTISAMPLE_NONE;
	DWORD multi_sample_quality = 0;

	TRACE("(%p)->(%p, %p)\n", iface, surface, viewport);

	if (!surface \|\| render->dst_surface) return D3DERR_INVALIDCALL;

	IDirect3DSurface9_GetDesc(surface, &surface_desc);
	if (surface_desc.Format != render->desc.Format
	\|\| surface_desc.Width != render->desc.Width
	\|\| surface_desc.Height != render->desc.Height)
	return D3DERR_INVALIDCALL;

	if (viewport)
	{
	if (viewport->X > render->desc.Width \|\| viewport->Y > render->desc.Height
	\|\| viewport->X + viewport->Width > render->desc.Width
	\|\| viewport->Y + viewport->Height > render->desc.Height)
	return D3DERR_INVALIDCALL;

	if (!(surface_desc.Usage & D3DUSAGE_RENDERTARGET)
	&& (viewport->X != 0 \|\| viewport->Y != 0
	\|\| viewport->Width != render->desc.Width
	\|\| viewport->Height != render->desc.Height))
	return D3DERR_INVALIDCALL;
	}

	device = render->device;

	/* save device state */
	IDirect3DDevice9_GetViewport(device, &render->previous_viewport);

	for (i = 0; i < render->num_render_targets; i++)
	{
	hr = IDirect3DDevice9_GetRenderTarget(device, i, &render->previous_render_targets[i]);
	if (FAILED(hr)) render->previous_render_targets[i] = NULL;
	}

	hr = IDirect3DDevice9_GetDepthStencilSurface(device, &render->previous_depth_stencil);
	if (FAILED(hr)) render->previous_depth_stencil = NULL;

	/* prepare for rendering to surface */
	for (i = 1; i < render->num_render_targets; i++)
	IDirect3DDevice9_SetRenderTarget(device, i, NULL);

	if (surface_desc.Usage & D3DUSAGE_RENDERTARGET)
	{
	hr = IDirect3DDevice9_SetRenderTarget(device, 0, surface);
	multi_sample_type = surface_desc.MultiSampleType;
	multi_sample_quality = surface_desc.MultiSampleQuality;
	}
	else
	{
	hr = IDirect3DDevice9_CreateRenderTarget(device, render->desc.Width, render->desc.Height,
	render->desc.Format, multi_sample_type, multi_sample_quality, FALSE,
	&render->render_target, NULL);
	if (FAILED(hr)) goto cleanup;
	hr = IDirect3DDevice9_SetRenderTarget(device, 0, render->render_target);
	}

	if (FAILED(hr)) goto cleanup;

	if (render->desc.DepthStencil)
	{
	hr = IDirect3DDevice9_CreateDepthStencilSurface(device, render->desc.Width, render->desc.Height,
	render->desc.DepthStencilFormat, multi_sample_type, multi_sample_quality, TRUE,
	&render->depth_stencil, NULL);
	}
	else render->depth_stencil = NULL;

	if (FAILED(hr)) goto cleanup;

	hr = IDirect3DDevice9_SetDepthStencilSurface(device, render->depth_stencil);
	if (FAILED(hr)) goto cleanup;

	if (viewport) IDirect3DDevice9_SetViewport(device, viewport);

	IDirect3DSurface9_AddRef(surface);
	render->dst_surface = surface;
	return IDirect3DDevice9_BeginScene(device);

	cleanup:
	restore_previous_device_state(render);

	if (render->dst_surface) IDirect3DSurface9_Release(render->dst_surface);
	render->dst_surface = NULL;

	if (render->render_target) IDirect3DSurface9_Release(render->render_target);
	render->render_target = NULL;
	if (render->depth_stencil) IDirect3DSurface9_Release(render->depth_stencil);
	render->depth_stencil = NULL;

	return hr;
	}

	static HRESULT WINAPI D3DXRenderToSurface_EndScene(ID3DXRenderToSurface *iface,
	DWORD filter)
	{
	struct render_to_surface *render = impl_from_ID3DXRenderToSurface(iface);
	HRESULT hr;

	TRACE("(%p)->(%#x)\n", iface, filter);

	if (!render->dst_surface) return D3DERR_INVALIDCALL;

	hr = IDirect3DDevice9_EndScene(render->device);

	/* copy render target data to destination surface, if needed */
	if (render->render_target)
	{
	hr = D3DXLoadSurfaceFromSurface(render->dst_surface, NULL, NULL,
	render->render_target, NULL, NULL, filter, 0);
	if (FAILED(hr)) ERR("Copying render target data to surface failed %#x\n", hr);
	}

	restore_previous_device_state(render);

	/* release resources */
	if (render->render_target)
	{
	IDirect3DSurface9_Release(render->render_target);
	render->render_target = NULL;
	}

	if (render->depth_stencil)
	{
	IDirect3DSurface9_Release(render->depth_stencil);
	render->depth_stencil = NULL;
	}

	IDirect3DSurface9_Release(render->dst_surface);
	render->dst_surface = NULL;

	return hr;
	}

	static HRESULT WINAPI D3DXRenderToSurface_OnLostDevice(ID3DXRenderToSurface *iface)
	{
	FIXME("(%p)->(): stub\n", iface);
	return D3D_OK;
	}

	static HRESULT WINAPI D3DXRenderToSurface_OnResetDevice(ID3DXRenderToSurface *iface)
	{
	FIXME("(%p)->(): stub\n", iface);
	return D3D_OK;
	}

	static const ID3DXRenderToSurfaceVtbl d3dx_render_to_surface_vtbl =
	{
	/* IUnknown methods */
	D3DXRenderToSurface_QueryInterface,
	D3DXRenderToSurface_AddRef,
	D3DXRenderToSurface_Release,
	/* ID3DXRenderToSurface methods */
	D3DXRenderToSurface_GetDevice,
	D3DXRenderToSurface_GetDesc,
	D3DXRenderToSurface_BeginScene,
	D3DXRenderToSurface_EndScene,
	D3DXRenderToSurface_OnLostDevice,
	D3DXRenderToSurface_OnResetDevice
	};

	HRESULT WINAPI D3DXCreateRenderToSurface(IDirect3DDevice9 *device,
	UINT width,
	UINT height,
	D3DFORMAT format,
	BOOL depth_stencil,
	D3DFORMAT depth_stencil_format,
	ID3DXRenderToSurface **out)
	{
	HRESULT hr;
	D3DCAPS9 caps;
	struct render_to_surface *render;
	unsigned int i;

	TRACE("(%p, %u, %u, %#x, %d, %#x, %p)\n", device, width, height, format,
	depth_stencil, depth_stencil_format, out);

	if (!device \|\| !out) return D3DERR_INVALIDCALL;

	hr = IDirect3DDevice9_GetDeviceCaps(device, &caps);
	if (FAILED(hr)) return hr;

	render = HeapAlloc(GetProcessHeap(), 0, sizeof(struct render_to_surface));
	if (!render) return E_OUTOFMEMORY;

	render->ID3DXRenderToSurface_iface.lpVtbl = &d3dx_render_to_surface_vtbl;
	render->ref = 1;

	render->desc.Width = width;
	render->desc.Height = height;
	render->desc.Format = format;
	render->desc.DepthStencil = depth_stencil;
	render->desc.DepthStencilFormat = depth_stencil_format;

	render->dst_surface = NULL;
	render->render_target = NULL;
	render->depth_stencil = NULL;

	render->num_render_targets = caps.NumSimultaneousRTs;
	render->previous_render_targets = HeapAlloc(GetProcessHeap(), 0,
	render->num_render_targets * sizeof(IDirect3DSurface9 *));
	if (!render->previous_render_targets)
	{
	HeapFree(GetProcessHeap(), 0, render);
	return E_OUTOFMEMORY;
	}

	for (i = 0; i < render->num_render_targets; i++)
	render->previous_render_targets[i] = NULL;
	render->previous_depth_stencil = NULL;

	IDirect3DDevice9_AddRef(device);
	render->device = device;

	*out = &render->ID3DXRenderToSurface_iface;
	return D3D_OK;
	}