git.oblomov.eu Git - wine/blob - dlls/wined3d/swapchain.c

   1 /*
   2  * Copyright 2002-2003 Jason Edmeades
   3  * Copyright 2002-2003 Raphael Junqueira
   4  * Copyright 2005 Oliver Stieber
   5  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
   6  * Copyright 2011 Henri Verbeet for CodeWeavers
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wined3d_private.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  27 WINE_DECLARE_DEBUG_CHANNEL(fps);
  28
  29 /* Do not call while under the GL lock. */
  30 static void swapchain_cleanup(struct wined3d_swapchain *swapchain)
  31 {
  32     WINED3DDISPLAYMODE mode;
  33     UINT i;
  34
  35     TRACE("Destroying swapchain %p.\n", swapchain);
  36
  37     wined3d_swapchain_set_gamma_ramp(swapchain, 0, &swapchain->orig_gamma);
  38
  39     /* Release the swapchain's draw buffers. Make sure swapchain->back_buffers[0]
  40      * is the last buffer to be destroyed, FindContext() depends on that. */
  41     if (swapchain->front_buffer)
  42     {
  43         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
  44         if (wined3d_surface_decref(swapchain->front_buffer))
  45             WARN("Something's still holding the front buffer (%p).\n", swapchain->front_buffer);
  46         swapchain->front_buffer = NULL;
  47     }
  48
  49     if (swapchain->back_buffers)
  50     {
  51         i = swapchain->presentParms.BackBufferCount;
  52
  53         while (i--)
  54         {
  55             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
  56             if (wined3d_surface_decref(swapchain->back_buffers[i]))
  57                 WARN("Something's still holding back buffer %u (%p).\n", i, swapchain->back_buffers[i]);
  58         }
  59         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
  60         swapchain->back_buffers = NULL;
  61     }
  62
  63     for (i = 0; i < swapchain->num_contexts; ++i)
  64     {
  65         context_destroy(swapchain->device, swapchain->context[i]);
  66     }
  67     HeapFree(GetProcessHeap(), 0, swapchain->context);
  68
  69     /* Restore the screen resolution if we rendered in fullscreen.
  70      * This will restore the screen resolution to what it was before creating
  71      * the swapchain. In case of d3d8 and d3d9 this will be the original
  72      * desktop resolution. In case of d3d7 this will be a NOP because ddraw
  73      * sets the resolution before starting up Direct3D, thus orig_width and
  74      * orig_height will be equal to the modes in the presentation params. */
  75     if (!swapchain->presentParms.Windowed && swapchain->presentParms.AutoRestoreDisplayMode)
  76     {
  77         mode.Width = swapchain->orig_width;
  78         mode.Height = swapchain->orig_height;
  79         mode.RefreshRate = 0;
  80         mode.Format = swapchain->orig_fmt;
  81         wined3d_device_set_display_mode(swapchain->device, 0, &mode);
  82     }
  83
  84     if (swapchain->backup_dc)
  85     {
  86         TRACE("Destroying backup wined3d window %p, dc %p.\n", swapchain->backup_wnd, swapchain->backup_dc);
  87
  88         ReleaseDC(swapchain->backup_wnd, swapchain->backup_dc);
  89         DestroyWindow(swapchain->backup_wnd);
  90     }
  91 }
  92
  93 ULONG CDECL wined3d_swapchain_incref(struct wined3d_swapchain *swapchain)
  94 {
  95     ULONG refcount = InterlockedIncrement(&swapchain->ref);
  96
  97     TRACE("%p increasing refcount to %u.\n", swapchain, refcount);
  98
  99     return refcount;
 100 }
 101
 102 /* Do not call while under the GL lock. */
 103 ULONG CDECL wined3d_swapchain_decref(struct wined3d_swapchain *swapchain)
 104 {
 105     ULONG refcount = InterlockedDecrement(&swapchain->ref);
 106
 107     TRACE("%p decreasing refcount to %u.\n", swapchain, refcount);
 108
 109     if (!refcount)
 110     {
 111         swapchain_cleanup(swapchain);
 112         swapchain->parent_ops->wined3d_object_destroyed(swapchain->parent);
 113         HeapFree(GetProcessHeap(), 0, swapchain);
 114     }
 115
 116     return refcount;
 117 }
 118
 119 void * CDECL wined3d_swapchain_get_parent(const struct wined3d_swapchain *swapchain)
 120 {
 121     TRACE("swapchain %p.\n", swapchain);
 122
 123     return swapchain->parent;
 124 }
 125
 126 HRESULT CDECL wined3d_swapchain_set_window(struct wined3d_swapchain *swapchain, HWND window)
 127 {
 128     if (!window)
 129         window = swapchain->device_window;
 130     if (window == swapchain->win_handle)
 131         return WINED3D_OK;
 132
 133     TRACE("Setting swapchain %p window from %p to %p.\n",
 134             swapchain, swapchain->win_handle, window);
 135     swapchain->win_handle = window;
 136
 137     return WINED3D_OK;
 138 }
 139
 140 HRESULT CDECL wined3d_swapchain_present(struct wined3d_swapchain *swapchain,
 141         const RECT *src_rect, const RECT *dst_rect, HWND dst_window_override,
 142         const RGNDATA *dirty_region, DWORD flags)
 143 {
 144     TRACE("swapchain %p, src_rect %s, dst_rect %s, dst_window_override %p, dirty_region %p, flags %#x.\n",
 145             swapchain, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect),
 146             dst_window_override, dirty_region, flags);
 147
 148     wined3d_swapchain_set_window(swapchain, dst_window_override);
 149
 150     return swapchain->swapchain_ops->swapchain_present(swapchain,
 151             src_rect, dst_rect, dirty_region, flags);
 152 }
 153
 154 HRESULT CDECL wined3d_swapchain_get_front_buffer_data(const struct wined3d_swapchain *swapchain,
 155         struct wined3d_surface *dst_surface)
 156 {
 157     struct wined3d_surface *src_surface;
 158     RECT src_rect, dst_rect;
 159
 160     TRACE("swapchain %p, dst_surface %p.\n", swapchain, dst_surface);
 161
 162     src_surface = swapchain->front_buffer;
 163     SetRect(&src_rect, 0, 0, src_surface->resource.width, src_surface->resource.height);
 164     dst_rect = src_rect;
 165
 166     if (swapchain->presentParms.Windowed)
 167     {
 168         MapWindowPoints(swapchain->win_handle, NULL, (POINT *)&dst_rect, 2);
 169         FIXME("Using destination rect %s in windowed mode, this is likely wrong.\n",
 170                 wine_dbgstr_rect(&dst_rect));
 171     }
 172
 173     return wined3d_surface_blt(dst_surface, &dst_rect, src_surface, &src_rect, 0, NULL, WINED3DTEXF_POINT);
 174 }
 175
 176 HRESULT CDECL wined3d_swapchain_get_back_buffer(const struct wined3d_swapchain *swapchain,
 177         UINT back_buffer_idx, WINED3DBACKBUFFER_TYPE type, struct wined3d_surface **back_buffer)
 178 {
 179     TRACE("swapchain %p, back_buffer_idx %u, type %#x, back_buffer %p.\n",
 180             swapchain, back_buffer_idx, type, back_buffer);
 181
 182     /* Return invalid if there is no backbuffer array, otherwise it will
 183      * crash when ddraw is used (there swapchain->back_buffers is always
 184      * NULL). We need this because this function is called from
 185      * stateblock_init_default_state() to get the default scissorrect
 186      * dimensions. */
 187     if (!swapchain->back_buffers || back_buffer_idx >= swapchain->presentParms.BackBufferCount)
 188     {
 189         WARN("Invalid back buffer index.\n");
 190         /* Native d3d9 doesn't set NULL here, just as wine's d3d9. But set it
 191          * here in wined3d to avoid problems in other libs. */
 192         *back_buffer = NULL;
 193         return WINED3DERR_INVALIDCALL;
 194     }
 195
 196     *back_buffer = swapchain->back_buffers[back_buffer_idx];
 197     if (*back_buffer)
 198         wined3d_surface_incref(*back_buffer);
 199
 200     TRACE("Returning back buffer %p.\n", *back_buffer);
 201
 202     return WINED3D_OK;
 203 }
 204
 205 HRESULT CDECL wined3d_swapchain_get_raster_status(const struct wined3d_swapchain *swapchain,
 206         WINED3DRASTER_STATUS *raster_status)
 207 {
 208     static BOOL warned;
 209     /* No OpenGL equivalent */
 210     if (!warned)
 211     {
 212         FIXME("swapchain %p, raster_status %p stub!\n", swapchain, raster_status);
 213         warned = TRUE;
 214     }
 215
 216     /* Obtaining the raster status is a widely implemented but optional
 217      * feature. When this method returns OK StarCraft 2 expects the
 218      * raster_status->InVBlank value to actually change over time. To prevent
 219      * StarCraft 2 from running in an infinite loop at startup this method
 220      * returns INVALIDCALL. */
 221     return WINED3DERR_INVALIDCALL;
 222 }
 223
 224 HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain, WINED3DDISPLAYMODE *mode)
 225 {
 226     HRESULT hr;
 227
 228     TRACE("swapchain %p, mode %p.\n", swapchain, mode);
 229
 230     hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d, swapchain->device->adapter->ordinal, mode);
 231
 232     TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
 233             mode->Width, mode->Height, mode->RefreshRate, debug_d3dformat(mode->Format));
 234
 235     return hr;
 236 }
 237
 238 struct wined3d_device * CDECL wined3d_swapchain_get_device(const struct wined3d_swapchain *swapchain)
 239 {
 240     TRACE("swapchain %p.\n", swapchain);
 241
 242     return swapchain->device;
 243 }
 244
 245 HRESULT CDECL wined3d_swapchain_get_present_parameters(const struct wined3d_swapchain *swapchain,
 246         WINED3DPRESENT_PARAMETERS *present_parameters)
 247 {
 248     TRACE("swapchain %p, present_parameters %p.\n", swapchain, present_parameters);
 249
 250     *present_parameters = swapchain->presentParms;
 251
 252     return WINED3D_OK;
 253 }
 254
 255 HRESULT CDECL wined3d_swapchain_set_gamma_ramp(const struct wined3d_swapchain *swapchain,
 256         DWORD flags, const WINED3DGAMMARAMP *ramp)
 257 {
 258     HDC dc;
 259
 260     TRACE("swapchain %p, flags %#x, ramp %p.\n", swapchain, flags, ramp);
 261
 262     if (flags)
 263         FIXME("Ignoring flags %#x.\n", flags);
 264
 265     dc = GetDC(swapchain->device_window);
 266     SetDeviceGammaRamp(dc, (void *)ramp);
 267     ReleaseDC(swapchain->device_window, dc);
 268
 269     return WINED3D_OK;
 270 }
 271
 272 HRESULT CDECL wined3d_swapchain_get_gamma_ramp(const struct wined3d_swapchain *swapchain,
 273         WINED3DGAMMARAMP *ramp)
 274 {
 275     HDC dc;
 276
 277     TRACE("swapchain %p, ramp %p.\n", swapchain, ramp);
 278
 279     dc = GetDC(swapchain->device_window);
 280     GetDeviceGammaRamp(dc, ramp);
 281     ReleaseDC(swapchain->device_window, dc);
 282
 283     return WINED3D_OK;
 284 }
 285
 286 /* A GL context is provided by the caller */
 287 static void swapchain_blit(const struct wined3d_swapchain *swapchain,
 288         struct wined3d_context *context, const RECT *src_rect, const RECT *dst_rect)
 289 {
 290     struct wined3d_surface *backbuffer = swapchain->back_buffers[0];
 291     UINT src_w = src_rect->right - src_rect->left;
 292     UINT src_h = src_rect->bottom - src_rect->top;
 293     GLenum gl_filter;
 294     const struct wined3d_gl_info *gl_info = context->gl_info;
 295     RECT win_rect;
 296     UINT win_h;
 297
 298     TRACE("swapchain %p, context %p, src_rect %s, dst_rect %s.\n",
 299             swapchain, context, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect));
 300
 301     if (src_w == dst_rect->right - dst_rect->left && src_h == dst_rect->bottom - dst_rect->top)
 302         gl_filter = GL_NEAREST;
 303     else
 304         gl_filter = GL_LINEAR;
 305
 306     GetClientRect(swapchain->win_handle, &win_rect);
 307     win_h = win_rect.bottom - win_rect.top;
 308
 309     if (gl_info->fbo_ops.glBlitFramebuffer && is_identity_fixup(backbuffer->resource.format->color_fixup))
 310     {
 311         DWORD location = SFLAG_INTEXTURE;
 312
 313         if (backbuffer->resource.multisample_type)
 314         {
 315             location = SFLAG_INRB_RESOLVED;
 316             surface_load_location(backbuffer, location, NULL);
 317         }
 318
 319         ENTER_GL();
 320         context_apply_fbo_state_blit(context, GL_READ_FRAMEBUFFER, backbuffer, NULL, location);
 321         glReadBuffer(GL_COLOR_ATTACHMENT0);
 322         context_check_fbo_status(context, GL_READ_FRAMEBUFFER);
 323
 324         context_apply_fbo_state_blit(context, GL_DRAW_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 325         context_set_draw_buffer(context, GL_BACK);
 326         context_invalidate_state(context, STATE_FRAMEBUFFER);
 327
 328         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 329         context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE));
 330         context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE1));
 331         context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE2));
 332         context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE3));
 333
 334         glDisable(GL_SCISSOR_TEST);
 335         context_invalidate_state(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE));
 336
 337         /* Note that the texture is upside down */
 338         gl_info->fbo_ops.glBlitFramebuffer(src_rect->left, src_rect->top, src_rect->right, src_rect->bottom,
 339                 dst_rect->left, win_h - dst_rect->top, dst_rect->right, win_h - dst_rect->bottom,
 340                 GL_COLOR_BUFFER_BIT, gl_filter);
 341         checkGLcall("Swapchain present blit(EXT_framebuffer_blit)\n");
 342         LEAVE_GL();
 343     }
 344     else
 345     {
 346         struct wined3d_device *device = swapchain->device;
 347         struct wined3d_context *context2;
 348         float tex_left = src_rect->left;
 349         float tex_top = src_rect->top;
 350         float tex_right = src_rect->right;
 351         float tex_bottom = src_rect->bottom;
 352
 353         context2 = context_acquire(device, swapchain->back_buffers[0]);
 354         context_apply_blit_state(context2, device);
 355
 356         if (backbuffer->flags & SFLAG_NORMCOORD)
 357         {
 358             tex_left /= src_w;
 359             tex_right /= src_w;
 360             tex_top /= src_h;
 361             tex_bottom /= src_h;
 362         }
 363
 364         if (is_complex_fixup(backbuffer->resource.format->color_fixup))
 365             gl_filter = GL_NEAREST;
 366
 367         ENTER_GL();
 368         context_apply_fbo_state_blit(context2, GL_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 369
 370         /* Set up the texture. The surface is not in a wined3d_texture
 371          * container, so there are no D3D texture settings to dirtify. */
 372         device->blitter->set_shader(device->blit_priv, context2, backbuffer);
 373         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MIN_FILTER, gl_filter);
 374         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MAG_FILTER, gl_filter);
 375
 376         context_set_draw_buffer(context, GL_BACK);
 377
 378         /* Set the viewport to the destination rectandle, disable any projection
 379          * transformation set up by context_apply_blit_state(), and draw a
 380          * (-1,-1)-(1,1) quad.
 381          *
 382          * Back up viewport and matrix to avoid breaking last_was_blit
 383          *
 384          * Note that context_apply_blit_state() set up viewport and ortho to
 385          * match the surface size - we want the GL drawable(=window) size. */
 386         glPushAttrib(GL_VIEWPORT_BIT);
 387         glViewport(dst_rect->left, win_h - dst_rect->bottom, dst_rect->right, win_h - dst_rect->top);
 388         glMatrixMode(GL_PROJECTION);
 389         glPushMatrix();
 390         glLoadIdentity();
 391
 392         glBegin(GL_QUADS);
 393             /* bottom left */
 394             glTexCoord2f(tex_left, tex_bottom);
 395             glVertex2i(-1, -1);
 396
 397             /* top left */
 398             glTexCoord2f(tex_left, tex_top);
 399             glVertex2i(-1, 1);
 400
 401             /* top right */
 402             glTexCoord2f(tex_right, tex_top);
 403             glVertex2i(1, 1);
 404
 405             /* bottom right */
 406             glTexCoord2f(tex_right, tex_bottom);
 407             glVertex2i(1, -1);
 408         glEnd();
 409
 410         glPopMatrix();
 411         glPopAttrib();
 412
 413         device->blitter->unset_shader(context->gl_info);
 414         checkGLcall("Swapchain present blit(manual)\n");
 415         LEAVE_GL();
 416
 417         context_release(context2);
 418     }
 419 }
 420
 421 static HRESULT swapchain_gl_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 422         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 423 {
 424     const struct wined3d_fb_state *fb = &swapchain->device->fb;
 425     const struct wined3d_gl_info *gl_info;
 426     struct wined3d_context *context;
 427     RECT src_rect, dst_rect;
 428     BOOL render_to_fbo;
 429
 430     context = context_acquire(swapchain->device, swapchain->back_buffers[0]);
 431     if (!context->valid)
 432     {
 433         context_release(context);
 434         WARN("Invalid context, skipping present.\n");
 435         return WINED3D_OK;
 436     }
 437
 438     gl_info = context->gl_info;
 439
 440     /* Render the cursor onto the back buffer, using our nifty directdraw blitting code :-) */
 441     if (swapchain->device->bCursorVisible &&
 442         swapchain->device->cursorTexture &&
 443         !swapchain->device->hardwareCursor)
 444     {
 445         struct wined3d_surface cursor;
 446         RECT destRect =
 447         {
 448             swapchain->device->xScreenSpace - swapchain->device->xHotSpot,
 449             swapchain->device->yScreenSpace - swapchain->device->yHotSpot,
 450             swapchain->device->xScreenSpace + swapchain->device->cursorWidth - swapchain->device->xHotSpot,
 451             swapchain->device->yScreenSpace + swapchain->device->cursorHeight - swapchain->device->yHotSpot,
 452         };
 453         TRACE("Rendering the cursor. Creating fake surface at %p\n", &cursor);
 454         /* Build a fake surface to call the Blitting code. It is not possible to use the interface passed by
 455          * the application because we are only supposed to copy the information out. Using a fake surface
 456          * allows to use the Blitting engine and avoid copying the whole texture -> render target blitting code.
 457          */
 458         memset(&cursor, 0, sizeof(cursor));
 459         cursor.resource.ref = 1;
 460         cursor.resource.device = swapchain->device;
 461         cursor.resource.pool = WINED3DPOOL_SCRATCH;
 462         cursor.resource.format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
 463         cursor.resource.resourceType = WINED3DRTYPE_SURFACE;
 464         cursor.texture_name = swapchain->device->cursorTexture;
 465         cursor.texture_target = GL_TEXTURE_2D;
 466         cursor.texture_level = 0;
 467         cursor.resource.width = swapchain->device->cursorWidth;
 468         cursor.resource.height = swapchain->device->cursorHeight;
 469         /* The cursor must have pow2 sizes */
 470         cursor.pow2Width = cursor.resource.width;
 471         cursor.pow2Height = cursor.resource.height;
 472         /* The surface is in the texture */
 473         cursor.flags |= SFLAG_INTEXTURE;
 474         /* DDBLT_KEYSRC will cause BltOverride to enable the alpha test with GL_NOTEQUAL, 0.0,
 475          * which is exactly what we want :-)
 476          */
 477         if (swapchain->presentParms.Windowed)
 478             MapWindowPoints(NULL, swapchain->win_handle, (LPPOINT)&destRect, 2);
 479         wined3d_surface_blt(swapchain->back_buffers[0], &destRect,
 480                 &cursor, NULL, WINEDDBLT_KEYSRC, NULL, WINED3DTEXF_POINT);
 481     }
 482
 483     if (swapchain->device->logo_surface)
 484     {
 485         struct wined3d_surface *src_surface = swapchain->device->logo_surface;
 486         RECT rect = {0, 0, src_surface->resource.width, src_surface->resource.height};
 487
 488         /* Blit the logo into the upper left corner of the drawable. */
 489         wined3d_surface_blt(swapchain->back_buffers[0], &rect, src_surface, &rect,
 490                  WINEDDBLT_KEYSRC, NULL, WINED3DTEXF_POINT);
 491     }
 492
 493     TRACE("Presenting HDC %p.\n", context->hdc);
 494
 495     render_to_fbo = swapchain->render_to_fbo;
 496
 497     if (src_rect_in)
 498     {
 499         src_rect = *src_rect_in;
 500         if (!render_to_fbo && (src_rect.left || src_rect.top
 501                 || src_rect.right != swapchain->presentParms.BackBufferWidth
 502                 || src_rect.bottom != swapchain->presentParms.BackBufferHeight))
 503         {
 504             render_to_fbo = TRUE;
 505         }
 506     }
 507     else
 508     {
 509         src_rect.left = 0;
 510         src_rect.top = 0;
 511         src_rect.right = swapchain->presentParms.BackBufferWidth;
 512         src_rect.bottom = swapchain->presentParms.BackBufferHeight;
 513     }
 514
 515     if (dst_rect_in)
 516         dst_rect = *dst_rect_in;
 517     else
 518         GetClientRect(swapchain->win_handle, &dst_rect);
 519
 520     if (!render_to_fbo && (dst_rect.left || dst_rect.top
 521             || dst_rect.right != swapchain->presentParms.BackBufferWidth
 522             || dst_rect.bottom != swapchain->presentParms.BackBufferHeight))
 523     {
 524         render_to_fbo = TRUE;
 525     }
 526
 527     /* Rendering to a window of different size, presenting partial rectangles,
 528      * or rendering to a different window needs help from FBO_blit or a textured
 529      * draw. Render the swapchain to a FBO in the future.
 530      *
 531      * Note that FBO_blit from the backbuffer to the frontbuffer cannot solve
 532      * all these issues - this fails if the window is smaller than the backbuffer.
 533      */
 534     if (!swapchain->render_to_fbo && render_to_fbo && wined3d_settings.offscreen_rendering_mode == ORM_FBO)
 535     {
 536         surface_load_location(swapchain->back_buffers[0], SFLAG_INTEXTURE, NULL);
 537         surface_modify_location(swapchain->back_buffers[0], SFLAG_INDRAWABLE, FALSE);
 538         swapchain->render_to_fbo = TRUE;
 539         swapchain_update_draw_bindings(swapchain);
 540     }
 541
 542     if (swapchain->render_to_fbo)
 543     {
 544         /* This codepath should only be hit with the COPY swapeffect. Otherwise a backbuffer-
 545          * window size mismatch is impossible(fullscreen) and src and dst rectangles are
 546          * not allowed(they need the COPY swapeffect)
 547          *
 548          * The DISCARD swap effect is ok as well since any backbuffer content is allowed after
 549          * the swap. */
 550         if (swapchain->presentParms.SwapEffect == WINED3DSWAPEFFECT_FLIP)
 551             FIXME("Render-to-fbo with WINED3DSWAPEFFECT_FLIP\n");
 552
 553         swapchain_blit(swapchain, context, &src_rect, &dst_rect);
 554     }
 555
 556     if (swapchain->num_contexts > 1)
 557         wglFinish();
 558     SwapBuffers(context->hdc); /* TODO: cycle through the swapchain buffers */
 559
 560     TRACE("SwapBuffers called, Starting new frame\n");
 561     /* FPS support */
 562     if (TRACE_ON(fps))
 563     {
 564         DWORD time = GetTickCount();
 565         ++swapchain->frames;
 566
 567         /* every 1.5 seconds */
 568         if (time - swapchain->prev_time > 1500)
 569         {
 570             TRACE_(fps)("%p @ approx %.2ffps\n",
 571                     swapchain, 1000.0 * swapchain->frames / (time - swapchain->prev_time));
 572             swapchain->prev_time = time;
 573             swapchain->frames = 0;
 574         }
 575     }
 576
 577     /* This is disabled, but the code left in for debug purposes.
 578      *
 579      * Since we're allowed to modify the new back buffer on a D3DSWAPEFFECT_DISCARD flip,
 580      * we can clear it with some ugly color to make bad drawing visible and ease debugging.
 581      * The Debug runtime does the same on Windows. However, a few games do not redraw the
 582      * screen properly, like Max Payne 2, which leaves a few pixels undefined.
 583      *
 584      * Tests show that the content of the back buffer after a discard flip is indeed not
 585      * reliable, so no game can depend on the exact content. However, it resembles the
 586      * old contents in some way, for example by showing fragments at other locations. In
 587      * general, the color theme is still intact. So Max payne, which draws rather dark scenes
 588      * gets a dark background image. If we clear it with a bright ugly color, the game's
 589      * bug shows up much more than it does on Windows, and the players see single pixels
 590      * with wrong colors.
 591      * (The Max Payne bug has been confirmed on Windows with the debug runtime) */
 592     if (FALSE && swapchain->presentParms.SwapEffect == WINED3DSWAPEFFECT_DISCARD)
 593     {
 594         static const struct wined3d_color cyan = {0.0f, 1.0f, 1.0f, 1.0f};
 595
 596         TRACE("Clearing the color buffer with cyan color\n");
 597
 598         wined3d_device_clear(swapchain->device, 0, NULL,
 599                 WINED3DCLEAR_TARGET, &cyan, 1.0f, 0);
 600     }
 601
 602     if (!swapchain->render_to_fbo && ((swapchain->front_buffer->flags & SFLAG_INSYSMEM)
 603             || (swapchain->back_buffers[0]->flags & SFLAG_INSYSMEM)))
 604     {
 605         /* Both memory copies of the surfaces are ok, flip them around too instead of dirtifying
 606          * Doesn't work with render_to_fbo because we're not flipping
 607          */
 608         struct wined3d_surface *front = swapchain->front_buffer;
 609         struct wined3d_surface *back = swapchain->back_buffers[0];
 610
 611         if(front->resource.size == back->resource.size) {
 612             DWORD fbflags;
 613             flip_surface(front, back);
 614
 615             /* Tell the front buffer surface that is has been modified. However,
 616              * the other locations were preserved during that, so keep the flags.
 617              * This serves to update the emulated overlay, if any. */
 618             fbflags = front->flags;
 619             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 620             front->flags = fbflags;
 621         }
 622         else
 623         {
 624             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 625             surface_modify_location(back, SFLAG_INDRAWABLE, TRUE);
 626         }
 627     }
 628     else
 629     {
 630         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 631         /* If the swapeffect is DISCARD, the back buffer is undefined. That means the SYSMEM
 632          * and INTEXTURE copies can keep their old content if they have any defined content.
 633          * If the swapeffect is COPY, the content remains the same. If it is FLIP however,
 634          * the texture / sysmem copy needs to be reloaded from the drawable
 635          */
 636         if (swapchain->presentParms.SwapEffect == WINED3DSWAPEFFECT_FLIP)
 637             surface_modify_location(swapchain->back_buffers[0], swapchain->back_buffers[0]->draw_binding, TRUE);
 638     }
 639
 640     if (fb->depth_stencil)
 641     {
 642         if (swapchain->presentParms.Flags & WINED3DPRESENTFLAG_DISCARD_DEPTHSTENCIL
 643                 || fb->depth_stencil->flags & SFLAG_DISCARD)
 644         {
 645             surface_modify_ds_location(fb->depth_stencil, SFLAG_DS_DISCARDED,
 646                     fb->depth_stencil->resource.width,
 647                     fb->depth_stencil->resource.height);
 648             if (fb->depth_stencil == swapchain->device->onscreen_depth_stencil)
 649             {
 650                 wined3d_surface_decref(swapchain->device->onscreen_depth_stencil);
 651                 swapchain->device->onscreen_depth_stencil = NULL;
 652             }
 653         }
 654     }
 655
 656     context_release(context);
 657
 658     TRACE("returning\n");
 659     return WINED3D_OK;
 660 }
 661
 662 static const struct wined3d_swapchain_ops swapchain_gl_ops =
 663 {
 664     swapchain_gl_present,
 665 };
 666
 667 /* Helper function that blits the front buffer contents to the target window. */
 668 void x11_copy_to_screen(const struct wined3d_swapchain *swapchain, const RECT *rect)
 669 {
 670     const struct wined3d_surface *front;
 671     POINT offset = {0, 0};
 672     HDC src_dc, dst_dc;
 673     RECT draw_rect;
 674     HWND window;
 675
 676     TRACE("swapchain %p, rect %s.\n", swapchain, wine_dbgstr_rect(rect));
 677
 678     front = swapchain->front_buffer;
 679     if (!(front->resource.usage & WINED3DUSAGE_RENDERTARGET))
 680         return;
 681
 682     if (front->flags & SFLAG_LOCKED)
 683         ERR("Trying to blit a mapped surface.\n");
 684
 685     TRACE("Copying surface %p to screen.\n", front);
 686
 687     src_dc = front->hDC;
 688     window = swapchain->win_handle;
 689     dst_dc = GetDCEx(window, 0, DCX_CLIPSIBLINGS | DCX_CACHE);
 690
 691     /* Front buffer coordinates are screen coordinates. Map them to the
 692      * destination window if not fullscreened. */
 693     if (swapchain->presentParms.Windowed)
 694         ClientToScreen(window, &offset);
 695
 696     TRACE("offset %s.\n", wine_dbgstr_point(&offset));
 697
 698     draw_rect.left = 0;
 699     draw_rect.right = front->resource.width;
 700     draw_rect.top = 0;
 701     draw_rect.bottom = front->resource.height;
 702
 703     if (rect)
 704         IntersectRect(&draw_rect, &draw_rect, rect);
 705
 706     BitBlt(dst_dc, draw_rect.left - offset.x, draw_rect.top - offset.y,
 707             draw_rect.right - draw_rect.left, draw_rect.bottom - draw_rect.top,
 708             src_dc, draw_rect.left, draw_rect.top, SRCCOPY);
 709     ReleaseDC(window, dst_dc);
 710 }
 711
 712 static HRESULT swapchain_gdi_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 713         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 714 {
 715     struct wined3d_surface *front, *back;
 716
 717     if (!swapchain->back_buffers)
 718     {
 719         WARN("Swapchain doesn't have a backbuffer, returning WINED3DERR_INVALIDCALL\n");
 720         return WINED3DERR_INVALIDCALL;
 721     }
 722     front = swapchain->front_buffer;
 723     back = swapchain->back_buffers[0];
 724
 725     /* Flip the DC. */
 726     {
 727         HDC tmp;
 728         tmp = front->hDC;
 729         front->hDC = back->hDC;
 730         back->hDC = tmp;
 731     }
 732
 733     /* Flip the DIBsection. */
 734     {
 735         HBITMAP tmp;
 736         tmp = front->dib.DIBsection;
 737         front->dib.DIBsection = back->dib.DIBsection;
 738         back->dib.DIBsection = tmp;
 739     }
 740
 741     /* Flip the surface data. */
 742     {
 743         void *tmp;
 744
 745         tmp = front->dib.bitmap_data;
 746         front->dib.bitmap_data = back->dib.bitmap_data;
 747         back->dib.bitmap_data = tmp;
 748
 749         tmp = front->resource.allocatedMemory;
 750         front->resource.allocatedMemory = back->resource.allocatedMemory;
 751         back->resource.allocatedMemory = tmp;
 752
 753         if (front->resource.heapMemory)
 754             ERR("GDI Surface %p has heap memory allocated.\n", front);
 755
 756         if (back->resource.heapMemory)
 757             ERR("GDI Surface %p has heap memory allocated.\n", back);
 758     }
 759
 760     /* FPS support */
 761     if (TRACE_ON(fps))
 762     {
 763         static LONG prev_time, frames;
 764         DWORD time = GetTickCount();
 765
 766         ++frames;
 767
 768         /* every 1.5 seconds */
 769         if (time - prev_time > 1500)
 770         {
 771             TRACE_(fps)("@ approx %.2ffps\n", 1000.0 * frames / (time - prev_time));
 772             prev_time = time;
 773             frames = 0;
 774         }
 775     }
 776
 777     x11_copy_to_screen(swapchain, NULL);
 778
 779     return WINED3D_OK;
 780 }
 781
 782 static const struct wined3d_swapchain_ops swapchain_gdi_ops =
 783 {
 784     swapchain_gdi_present,
 785 };
 786
 787 void swapchain_update_render_to_fbo(struct wined3d_swapchain *swapchain)
 788 {
 789     RECT client_rect;
 790
 791     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
 792         return;
 793
 794     if (!swapchain->presentParms.BackBufferCount)
 795     {
 796         TRACE("Single buffered rendering.\n");
 797         swapchain->render_to_fbo = FALSE;
 798         return;
 799     }
 800
 801     GetClientRect(swapchain->win_handle, &client_rect);
 802
 803     TRACE("Backbuffer %ux%u, window %ux%u.\n",
 804             swapchain->presentParms.BackBufferWidth,
 805             swapchain->presentParms.BackBufferHeight,
 806             client_rect.right, client_rect.bottom);
 807     TRACE("Multisample type %#x, quality %#x.\n",
 808             swapchain->presentParms.MultiSampleType,
 809             swapchain->presentParms.MultiSampleQuality);
 810
 811     if (!wined3d_settings.always_offscreen && !swapchain->presentParms.MultiSampleType
 812             && swapchain->presentParms.BackBufferWidth == client_rect.right
 813             && swapchain->presentParms.BackBufferHeight == client_rect.bottom)
 814     {
 815         TRACE("Backbuffer dimensions match window dimensions, rendering onscreen.\n");
 816         swapchain->render_to_fbo = FALSE;
 817         return;
 818     }
 819
 820     TRACE("Rendering to FBO.\n");
 821     swapchain->render_to_fbo = TRUE;
 822 }
 823
 824 /* Do not call while under the GL lock. */
 825 static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, WINED3DSURFTYPE surface_type,
 826         struct wined3d_device *device, WINED3DPRESENT_PARAMETERS *present_parameters,
 827         void *parent, const struct wined3d_parent_ops *parent_ops)
 828 {
 829     const struct wined3d_adapter *adapter = device->adapter;
 830     const struct wined3d_format *format;
 831     BOOL displaymode_set = FALSE;
 832     WINED3DDISPLAYMODE mode;
 833     RECT client_rect;
 834     HWND window;
 835     HRESULT hr;
 836     UINT i;
 837
 838     if (present_parameters->BackBufferCount > WINED3DPRESENT_BACK_BUFFER_MAX)
 839     {
 840         FIXME("The application requested %u back buffers, this is not supported.\n",
 841                 present_parameters->BackBufferCount);
 842         return WINED3DERR_INVALIDCALL;
 843     }
 844
 845     if (present_parameters->BackBufferCount > 1)
 846     {
 847         FIXME("The application requested more than one back buffer, this is not properly supported.\n"
 848                 "Please configure the application to use double buffering (1 back buffer) if possible.\n");
 849     }
 850
 851     switch (surface_type)
 852     {
 853         case SURFACE_GDI:
 854             swapchain->swapchain_ops = &swapchain_gdi_ops;
 855             break;
 856
 857         case SURFACE_OPENGL:
 858             swapchain->swapchain_ops = &swapchain_gl_ops;
 859             break;
 860
 861         default:
 862             ERR("Invalid surface type %#x.\n", surface_type);
 863             return WINED3DERR_INVALIDCALL;
 864     }
 865
 866     window = present_parameters->hDeviceWindow ? present_parameters->hDeviceWindow : device->createParms.hFocusWindow;
 867
 868     swapchain->device = device;
 869     swapchain->parent = parent;
 870     swapchain->parent_ops = parent_ops;
 871     swapchain->ref = 1;
 872     swapchain->win_handle = window;
 873     swapchain->device_window = window;
 874
 875     wined3d_get_adapter_display_mode(device->wined3d, adapter->ordinal, &mode);
 876     swapchain->orig_width = mode.Width;
 877     swapchain->orig_height = mode.Height;
 878     swapchain->orig_fmt = mode.Format;
 879     format = wined3d_get_format(&adapter->gl_info, mode.Format);
 880
 881     GetClientRect(window, &client_rect);
 882     if (present_parameters->Windowed
 883             && (!present_parameters->BackBufferWidth || !present_parameters->BackBufferHeight
 884             || present_parameters->BackBufferFormat == WINED3DFMT_UNKNOWN))
 885     {
 886
 887         if (!present_parameters->BackBufferWidth)
 888         {
 889             present_parameters->BackBufferWidth = client_rect.right;
 890             TRACE("Updating width to %u.\n", present_parameters->BackBufferWidth);
 891         }
 892
 893         if (!present_parameters->BackBufferHeight)
 894         {
 895             present_parameters->BackBufferHeight = client_rect.bottom;
 896             TRACE("Updating height to %u.\n", present_parameters->BackBufferHeight);
 897         }
 898
 899         if (present_parameters->BackBufferFormat == WINED3DFMT_UNKNOWN)
 900         {
 901             present_parameters->BackBufferFormat = swapchain->orig_fmt;
 902             TRACE("Updating format to %s.\n", debug_d3dformat(swapchain->orig_fmt));
 903         }
 904     }
 905     swapchain->presentParms = *present_parameters;
 906     swapchain_update_render_to_fbo(swapchain);
 907
 908     TRACE("Creating front buffer.\n");
 909     hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
 910             swapchain->presentParms.BackBufferWidth, swapchain->presentParms.BackBufferHeight,
 911             swapchain->presentParms.BackBufferFormat, swapchain->presentParms.MultiSampleType,
 912             swapchain->presentParms.MultiSampleQuality, TRUE /* Lockable */,
 913             &swapchain->front_buffer);
 914     if (FAILED(hr))
 915     {
 916         WARN("Failed to create front buffer, hr %#x.\n", hr);
 917         goto err;
 918     }
 919
 920     surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_SWAPCHAIN, swapchain);
 921     if (surface_type == SURFACE_OPENGL)
 922     {
 923         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 924     }
 925
 926     /* MSDN says we're only allowed a single fullscreen swapchain per device,
 927      * so we should really check to see if there is a fullscreen swapchain
 928      * already. Does a single head count as full screen? */
 929
 930     if (!present_parameters->Windowed)
 931     {
 932         WINED3DDISPLAYMODE mode;
 933
 934         /* Change the display settings */
 935         mode.Width = present_parameters->BackBufferWidth;
 936         mode.Height = present_parameters->BackBufferHeight;
 937         mode.Format = present_parameters->BackBufferFormat;
 938         mode.RefreshRate = present_parameters->FullScreen_RefreshRateInHz;
 939
 940         hr = wined3d_device_set_display_mode(device, 0, &mode);
 941         if (FAILED(hr))
 942         {
 943             WARN("Failed to set display mode, hr %#x.\n", hr);
 944             goto err;
 945         }
 946         displaymode_set = TRUE;
 947     }
 948
 949     if (surface_type == SURFACE_OPENGL)
 950     {
 951         static const enum wined3d_format_id formats[] =
 952         {
 953             WINED3DFMT_D24_UNORM_S8_UINT,
 954             WINED3DFMT_D32_UNORM,
 955             WINED3DFMT_R24_UNORM_X8_TYPELESS,
 956             WINED3DFMT_D16_UNORM,
 957             WINED3DFMT_S1_UINT_D15_UNORM
 958         };
 959
 960         const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 961
 962         swapchain->context = HeapAlloc(GetProcessHeap(), 0, sizeof(*swapchain->context));
 963         if (!swapchain->context)
 964         {
 965             ERR("Failed to create the context array.\n");
 966             hr = E_OUTOFMEMORY;
 967             goto err;
 968         }
 969         swapchain->num_contexts = 1;
 970
 971         /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
 972          * You are able to add a depth + stencil surface at a later stage when you need it.
 973          * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
 974          * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
 975          * context, need torecreate shaders, textures and other resources.
 976          *
 977          * The context manager already takes care of the state problem and for the other tasks code from Reset
 978          * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
 979          * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
 980          * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
 981          * issue needs to be fixed. */
 982         for (i = 0; i < (sizeof(formats) / sizeof(*formats)); i++)
 983         {
 984             swapchain->ds_format = wined3d_get_format(gl_info, formats[i]);
 985             swapchain->context[0] = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format);
 986             if (swapchain->context[0]) break;
 987             TRACE("Depth stencil format %s is not supported, trying next format\n",
 988                   debug_d3dformat(formats[i]));
 989         }
 990
 991         if (!swapchain->context[0])
 992         {
 993             WARN("Failed to create context.\n");
 994             hr = WINED3DERR_NOTAVAILABLE;
 995             goto err;
 996         }
 997
 998         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
 999                 && (!present_parameters->EnableAutoDepthStencil
1000                 || swapchain->presentParms.AutoDepthStencilFormat != swapchain->ds_format->id))
1001         {
1002             FIXME("Add OpenGL context recreation support to context_validate_onscreen_formats\n");
1003         }
1004         context_release(swapchain->context[0]);
1005     }
1006
1007     if (swapchain->presentParms.BackBufferCount > 0)
1008     {
1009         swapchain->back_buffers = HeapAlloc(GetProcessHeap(), 0,
1010                 sizeof(*swapchain->back_buffers) * swapchain->presentParms.BackBufferCount);
1011         if (!swapchain->back_buffers)
1012         {
1013             ERR("Failed to allocate backbuffer array memory.\n");
1014             hr = E_OUTOFMEMORY;
1015             goto err;
1016         }
1017
1018         for (i = 0; i < swapchain->presentParms.BackBufferCount; ++i)
1019         {
1020             TRACE("Creating back buffer %u.\n", i);
1021             hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
1022                     swapchain->presentParms.BackBufferWidth, swapchain->presentParms.BackBufferHeight,
1023                     swapchain->presentParms.BackBufferFormat, swapchain->presentParms.MultiSampleType,
1024                     swapchain->presentParms.MultiSampleQuality, TRUE /* Lockable */,
1025                     &swapchain->back_buffers[i]);
1026             if (FAILED(hr))
1027             {
1028                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
1029                 goto err;
1030             }
1031
1032             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
1033         }
1034     }
1035
1036     /* Swapchains share the depth/stencil buffer, so only create a single depthstencil surface. */
1037     if (present_parameters->EnableAutoDepthStencil && surface_type == SURFACE_OPENGL)
1038     {
1039         TRACE("Creating depth/stencil buffer.\n");
1040         if (!device->auto_depth_stencil)
1041         {
1042             hr = device->device_parent->ops->create_depth_stencil(device->device_parent,
1043                     swapchain->presentParms.BackBufferWidth, swapchain->presentParms.BackBufferHeight,
1044                     swapchain->presentParms.AutoDepthStencilFormat, swapchain->presentParms.MultiSampleType,
1045                     swapchain->presentParms.MultiSampleQuality, FALSE /* FIXME: Discard */,
1046                     &device->auto_depth_stencil);
1047             if (FAILED(hr))
1048             {
1049                 WARN("Failed to create the auto depth stencil, hr %#x.\n", hr);
1050                 goto err;
1051             }
1052
1053             surface_set_container(device->auto_depth_stencil, WINED3D_CONTAINER_NONE, NULL);
1054         }
1055     }
1056
1057     wined3d_swapchain_get_gamma_ramp(swapchain, &swapchain->orig_gamma);
1058
1059     return WINED3D_OK;
1060
1061 err:
1062     if (displaymode_set)
1063     {
1064         DEVMODEW devmode;
1065
1066         ClipCursor(NULL);
1067
1068         /* Change the display settings */
1069         memset(&devmode, 0, sizeof(devmode));
1070         devmode.dmSize = sizeof(devmode);
1071         devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
1072         devmode.dmBitsPerPel = format->byte_count * CHAR_BIT;
1073         devmode.dmPelsWidth = swapchain->orig_width;
1074         devmode.dmPelsHeight = swapchain->orig_height;
1075         ChangeDisplaySettingsExW(adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);
1076     }
1077
1078     if (swapchain->back_buffers)
1079     {
1080         for (i = 0; i < swapchain->presentParms.BackBufferCount; ++i)
1081         {
1082             if (swapchain->back_buffers[i])
1083             {
1084                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
1085                 wined3d_surface_decref(swapchain->back_buffers[i]);
1086             }
1087         }
1088         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
1089     }
1090
1091     if (swapchain->context)
1092     {
1093         if (swapchain->context[0])
1094         {
1095             context_release(swapchain->context[0]);
1096             context_destroy(device, swapchain->context[0]);
1097             swapchain->num_contexts = 0;
1098         }
1099         HeapFree(GetProcessHeap(), 0, swapchain->context);
1100     }
1101
1102     if (swapchain->front_buffer)
1103     {
1104         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
1105         wined3d_surface_decref(swapchain->front_buffer);
1106     }
1107
1108     return hr;
1109 }
1110
1111 /* Do not call while under the GL lock. */
1112 HRESULT CDECL wined3d_swapchain_create(struct wined3d_device *device,
1113         WINED3DPRESENT_PARAMETERS *present_parameters, WINED3DSURFTYPE surface_type,
1114         void *parent, const struct wined3d_parent_ops *parent_ops,
1115         struct wined3d_swapchain **swapchain)
1116 {
1117     struct wined3d_swapchain *object;
1118     HRESULT hr;
1119
1120     TRACE("device %p, present_parameters %p, swapchain %p, parent %p, surface_type %#x.\n",
1121             device, present_parameters, swapchain, parent, surface_type);
1122
1123     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
1124     if (!object)
1125     {
1126         ERR("Failed to allocate swapchain memory.\n");
1127         return E_OUTOFMEMORY;
1128     }
1129
1130     hr = swapchain_init(object, surface_type, device, present_parameters, parent, parent_ops);
1131     if (FAILED(hr))
1132     {
1133         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
1134         HeapFree(GetProcessHeap(), 0, object);
1135         return hr;
1136     }
1137
1138     TRACE("Created swapchain %p.\n", object);
1139     *swapchain = object;
1140
1141     return WINED3D_OK;
1142 }
1143
1144 /* Do not call while under the GL lock. */
1145 static struct wined3d_context *swapchain_create_context(struct wined3d_swapchain *swapchain)
1146 {
1147     struct wined3d_context **newArray;
1148     struct wined3d_context *ctx;
1149
1150     TRACE("Creating a new context for swapchain %p, thread %u.\n", swapchain, GetCurrentThreadId());
1151
1152     if (!(ctx = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format)))
1153     {
1154         ERR("Failed to create a new context for the swapchain\n");
1155         return NULL;
1156     }
1157     context_release(ctx);
1158
1159     newArray = HeapAlloc(GetProcessHeap(), 0, sizeof(*newArray) * (swapchain->num_contexts + 1));
1160     if(!newArray) {
1161         ERR("Out of memory when trying to allocate a new context array\n");
1162         context_destroy(swapchain->device, ctx);
1163         return NULL;
1164     }
1165     memcpy(newArray, swapchain->context, sizeof(*newArray) * swapchain->num_contexts);
1166     HeapFree(GetProcessHeap(), 0, swapchain->context);
1167     newArray[swapchain->num_contexts] = ctx;
1168     swapchain->context = newArray;
1169     swapchain->num_contexts++;
1170
1171     TRACE("Returning context %p\n", ctx);
1172     return ctx;
1173 }
1174
1175 void swapchain_destroy_contexts(struct wined3d_swapchain *swapchain)
1176 {
1177     unsigned int i;
1178
1179     for (i = 0; i < swapchain->num_contexts; ++i)
1180     {
1181         context_destroy(swapchain->device, swapchain->context[i]);
1182     }
1183     swapchain->num_contexts = 0;
1184 }
1185
1186 struct wined3d_context *swapchain_get_context(struct wined3d_swapchain *swapchain)
1187 {
1188     DWORD tid = GetCurrentThreadId();
1189     unsigned int i;
1190
1191     for (i = 0; i < swapchain->num_contexts; ++i)
1192     {
1193         if (swapchain->context[i]->tid == tid)
1194             return swapchain->context[i];
1195     }
1196
1197     /* Create a new context for the thread */
1198     return swapchain_create_context(swapchain);
1199 }
1200
1201 void get_drawable_size_swapchain(const struct wined3d_context *context, UINT *width, UINT *height)
1202 {
1203     /* The drawable size of an onscreen drawable is the surface size.
1204      * (Actually: The window size, but the surface is created in window size) */
1205     *width = context->current_rt->resource.width;
1206     *height = context->current_rt->resource.height;
1207 }
1208
1209 HDC swapchain_get_backup_dc(struct wined3d_swapchain *swapchain)
1210 {
1211     if (!swapchain->backup_dc)
1212     {
1213         TRACE("Creating the backup window for swapchain %p.\n", swapchain);
1214
1215         if (!(swapchain->backup_wnd = CreateWindowA(WINED3D_OPENGL_WINDOW_CLASS_NAME, "WineD3D fake window",
1216                 WS_OVERLAPPEDWINDOW, 10, 10, 10, 10, NULL, NULL, NULL, NULL)))
1217         {
1218             ERR("Failed to create a window.\n");
1219             return NULL;
1220         }
1221
1222         if (!(swapchain->backup_dc = GetDC(swapchain->backup_wnd)))
1223         {
1224             ERR("Failed to get a DC.\n");
1225             DestroyWindow(swapchain->backup_wnd);
1226             swapchain->backup_wnd = NULL;
1227             return NULL;
1228         }
1229     }
1230
1231     return swapchain->backup_dc;
1232 }
1233
1234 void swapchain_update_draw_bindings(struct wined3d_swapchain *swapchain)
1235 {
1236     UINT i;
1237
1238     surface_update_draw_binding(swapchain->front_buffer);
1239
1240     for (i = 0; i < swapchain->presentParms.BackBufferCount; ++i)
1241     {
1242         surface_update_draw_binding(swapchain->back_buffers[i]);
1243     }
1244 }