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     struct wined3d_display_mode 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->desc.backbuffer_count;
  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->desc.windowed && swapchain->desc.auto_restore_display_mode)
  76     {
  77         mode.width = swapchain->orig_width;
  78         mode.height = swapchain->orig_height;
  79         mode.refresh_rate = 0;
  80         mode.format_id = 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     if (!swapchain->back_buffers)
 149     {
 150         WARN("Swapchain doesn't have a backbuffer, returning WINED3DERR_INVALIDCALL\n");
 151         return WINED3DERR_INVALIDCALL;
 152     }
 153
 154     wined3d_swapchain_set_window(swapchain, dst_window_override);
 155
 156     swapchain->swapchain_ops->swapchain_present(swapchain, src_rect, dst_rect, dirty_region, flags);
 157
 158     return WINED3D_OK;
 159 }
 160
 161 HRESULT CDECL wined3d_swapchain_get_front_buffer_data(const struct wined3d_swapchain *swapchain,
 162         struct wined3d_surface *dst_surface)
 163 {
 164     struct wined3d_surface *src_surface;
 165     RECT src_rect, dst_rect;
 166
 167     TRACE("swapchain %p, dst_surface %p.\n", swapchain, dst_surface);
 168
 169     src_surface = swapchain->front_buffer;
 170     SetRect(&src_rect, 0, 0, src_surface->resource.width, src_surface->resource.height);
 171     dst_rect = src_rect;
 172
 173     if (swapchain->desc.windowed)
 174     {
 175         MapWindowPoints(swapchain->win_handle, NULL, (POINT *)&dst_rect, 2);
 176         FIXME("Using destination rect %s in windowed mode, this is likely wrong.\n",
 177                 wine_dbgstr_rect(&dst_rect));
 178     }
 179
 180     return wined3d_surface_blt(dst_surface, &dst_rect, src_surface, &src_rect, 0, NULL, WINED3D_TEXF_POINT);
 181 }
 182
 183 HRESULT CDECL wined3d_swapchain_get_back_buffer(const struct wined3d_swapchain *swapchain,
 184         UINT back_buffer_idx, enum wined3d_backbuffer_type type, struct wined3d_surface **back_buffer)
 185 {
 186     TRACE("swapchain %p, back_buffer_idx %u, type %#x, back_buffer %p.\n",
 187             swapchain, back_buffer_idx, type, back_buffer);
 188
 189     /* Return invalid if there is no backbuffer array, otherwise it will
 190      * crash when ddraw is used (there swapchain->back_buffers is always
 191      * NULL). We need this because this function is called from
 192      * stateblock_init_default_state() to get the default scissorrect
 193      * dimensions. */
 194     if (!swapchain->back_buffers || back_buffer_idx >= swapchain->desc.backbuffer_count)
 195     {
 196         WARN("Invalid back buffer index.\n");
 197         /* Native d3d9 doesn't set NULL here, just as wine's d3d9. But set it
 198          * here in wined3d to avoid problems in other libs. */
 199         *back_buffer = NULL;
 200         return WINED3DERR_INVALIDCALL;
 201     }
 202
 203     *back_buffer = swapchain->back_buffers[back_buffer_idx];
 204     if (*back_buffer)
 205         wined3d_surface_incref(*back_buffer);
 206
 207     TRACE("Returning back buffer %p.\n", *back_buffer);
 208
 209     return WINED3D_OK;
 210 }
 211
 212 HRESULT CDECL wined3d_swapchain_get_raster_status(const struct wined3d_swapchain *swapchain,
 213         struct wined3d_raster_status *raster_status)
 214 {
 215     static BOOL warned;
 216     LARGE_INTEGER counter, freq_per_sec;
 217     LONGLONG freq_per_frame, freq_per_line;
 218     struct wined3d_display_mode mode;
 219
 220     /* No OpenGL equivalent */
 221     if (!warned)
 222     {
 223         FIXME("swapchain %p, raster_status %p semi-stub!\n", swapchain, raster_status);
 224         warned = TRUE;
 225     }
 226
 227     /* Obtaining the raster status is a widely implemented but optional
 228      * feature. When this method returns OK StarCraft 2 expects the
 229      * raster_status->InVBlank value to actually change over time.
 230      * And Endless Alice Crysis doesn't care even if this method fails.
 231      * Thus this method returns OK and fakes raster_status by
 232      * QueryPerformanceCounter. */
 233
 234     if (!QueryPerformanceCounter(&counter) || !QueryPerformanceFrequency(&freq_per_sec))
 235         return WINED3DERR_INVALIDCALL;
 236
 237     if (FAILED(wined3d_swapchain_get_display_mode(swapchain, &mode)))
 238         return WINED3DERR_INVALIDCALL;
 239     if (mode.refresh_rate == DEFAULT_REFRESH_RATE)
 240         mode.refresh_rate = 60;
 241
 242     freq_per_frame = freq_per_sec.QuadPart / mode.refresh_rate;
 243     /* Assume 20 scan lines in the vertical blank */
 244     freq_per_line = freq_per_frame / (mode.height + 20);
 245     raster_status->scan_line = (counter.QuadPart % freq_per_frame) / freq_per_line;
 246     if (raster_status->scan_line < mode.height)
 247         raster_status->in_vblank = FALSE;
 248     else
 249     {
 250         raster_status->scan_line = 0;
 251         raster_status->in_vblank = TRUE;
 252     }
 253     TRACE("Returning fake value, in_vblank %u, scan_line %u.\n",
 254           raster_status->in_vblank, raster_status->scan_line);
 255     return WINED3D_OK;
 256 }
 257
 258 HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain,
 259         struct wined3d_display_mode *mode)
 260 {
 261     HRESULT hr;
 262
 263     TRACE("swapchain %p, mode %p.\n", swapchain, mode);
 264
 265     hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d, swapchain->device->adapter->ordinal, mode);
 266
 267     TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
 268             mode->width, mode->height, mode->refresh_rate, debug_d3dformat(mode->format_id));
 269
 270     return hr;
 271 }
 272
 273 struct wined3d_device * CDECL wined3d_swapchain_get_device(const struct wined3d_swapchain *swapchain)
 274 {
 275     TRACE("swapchain %p.\n", swapchain);
 276
 277     return swapchain->device;
 278 }
 279
 280 HRESULT CDECL wined3d_swapchain_get_desc(const struct wined3d_swapchain *swapchain,
 281         struct wined3d_swapchain_desc *desc)
 282 {
 283     TRACE("swapchain %p, desc %p.\n", swapchain, desc);
 284
 285     *desc = swapchain->desc;
 286
 287     return WINED3D_OK;
 288 }
 289
 290 HRESULT CDECL wined3d_swapchain_set_gamma_ramp(const struct wined3d_swapchain *swapchain,
 291         DWORD flags, const struct wined3d_gamma_ramp *ramp)
 292 {
 293     HDC dc;
 294
 295     TRACE("swapchain %p, flags %#x, ramp %p.\n", swapchain, flags, ramp);
 296
 297     if (flags)
 298         FIXME("Ignoring flags %#x.\n", flags);
 299
 300     dc = GetDC(swapchain->device_window);
 301     SetDeviceGammaRamp(dc, (void *)ramp);
 302     ReleaseDC(swapchain->device_window, dc);
 303
 304     return WINED3D_OK;
 305 }
 306
 307 HRESULT CDECL wined3d_swapchain_get_gamma_ramp(const struct wined3d_swapchain *swapchain,
 308         struct wined3d_gamma_ramp *ramp)
 309 {
 310     HDC dc;
 311
 312     TRACE("swapchain %p, ramp %p.\n", swapchain, ramp);
 313
 314     dc = GetDC(swapchain->device_window);
 315     GetDeviceGammaRamp(dc, ramp);
 316     ReleaseDC(swapchain->device_window, dc);
 317
 318     return WINED3D_OK;
 319 }
 320
 321 /* A GL context is provided by the caller */
 322 static void swapchain_blit(const struct wined3d_swapchain *swapchain,
 323         struct wined3d_context *context, const RECT *src_rect, const RECT *dst_rect)
 324 {
 325     struct wined3d_surface *backbuffer = swapchain->back_buffers[0];
 326     UINT src_w = src_rect->right - src_rect->left;
 327     UINT src_h = src_rect->bottom - src_rect->top;
 328     GLenum gl_filter;
 329     const struct wined3d_gl_info *gl_info = context->gl_info;
 330     RECT win_rect;
 331     UINT win_h;
 332
 333     TRACE("swapchain %p, context %p, src_rect %s, dst_rect %s.\n",
 334             swapchain, context, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect));
 335
 336     if (src_w == dst_rect->right - dst_rect->left && src_h == dst_rect->bottom - dst_rect->top)
 337         gl_filter = GL_NEAREST;
 338     else
 339         gl_filter = GL_LINEAR;
 340
 341     GetClientRect(swapchain->win_handle, &win_rect);
 342     win_h = win_rect.bottom - win_rect.top;
 343
 344     if (gl_info->fbo_ops.glBlitFramebuffer && is_identity_fixup(backbuffer->resource.format->color_fixup))
 345     {
 346         DWORD location = SFLAG_INTEXTURE;
 347
 348         if (backbuffer->resource.multisample_type)
 349         {
 350             location = SFLAG_INRB_RESOLVED;
 351             surface_load_location(backbuffer, location, NULL);
 352         }
 353
 354         ENTER_GL();
 355         context_apply_fbo_state_blit(context, GL_READ_FRAMEBUFFER, backbuffer, NULL, location);
 356         glReadBuffer(GL_COLOR_ATTACHMENT0);
 357         context_check_fbo_status(context, GL_READ_FRAMEBUFFER);
 358
 359         context_apply_fbo_state_blit(context, GL_DRAW_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 360         context_set_draw_buffer(context, GL_BACK);
 361         context_invalidate_state(context, STATE_FRAMEBUFFER);
 362
 363         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 364         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
 365         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
 366         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
 367         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
 368
 369         glDisable(GL_SCISSOR_TEST);
 370         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
 371
 372         /* Note that the texture is upside down */
 373         gl_info->fbo_ops.glBlitFramebuffer(src_rect->left, src_rect->top, src_rect->right, src_rect->bottom,
 374                 dst_rect->left, win_h - dst_rect->top, dst_rect->right, win_h - dst_rect->bottom,
 375                 GL_COLOR_BUFFER_BIT, gl_filter);
 376         checkGLcall("Swapchain present blit(EXT_framebuffer_blit)\n");
 377         LEAVE_GL();
 378     }
 379     else
 380     {
 381         struct wined3d_device *device = swapchain->device;
 382         struct wined3d_context *context2;
 383         float tex_left = src_rect->left;
 384         float tex_top = src_rect->top;
 385         float tex_right = src_rect->right;
 386         float tex_bottom = src_rect->bottom;
 387
 388         context2 = context_acquire(device, swapchain->back_buffers[0]);
 389         context_apply_blit_state(context2, device);
 390
 391         if (backbuffer->flags & SFLAG_NORMCOORD)
 392         {
 393             tex_left /= src_w;
 394             tex_right /= src_w;
 395             tex_top /= src_h;
 396             tex_bottom /= src_h;
 397         }
 398
 399         if (is_complex_fixup(backbuffer->resource.format->color_fixup))
 400             gl_filter = GL_NEAREST;
 401
 402         ENTER_GL();
 403         context_apply_fbo_state_blit(context2, GL_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 404
 405         /* Set up the texture. The surface is not in a wined3d_texture
 406          * container, so there are no D3D texture settings to dirtify. */
 407         device->blitter->set_shader(device->blit_priv, context2, backbuffer);
 408         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MIN_FILTER, gl_filter);
 409         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MAG_FILTER, gl_filter);
 410
 411         context_set_draw_buffer(context, GL_BACK);
 412
 413         /* Set the viewport to the destination rectandle, disable any projection
 414          * transformation set up by context_apply_blit_state(), and draw a
 415          * (-1,-1)-(1,1) quad.
 416          *
 417          * Back up viewport and matrix to avoid breaking last_was_blit
 418          *
 419          * Note that context_apply_blit_state() set up viewport and ortho to
 420          * match the surface size - we want the GL drawable(=window) size. */
 421         glPushAttrib(GL_VIEWPORT_BIT);
 422         glViewport(dst_rect->left, win_h - dst_rect->bottom, dst_rect->right, win_h - dst_rect->top);
 423         glMatrixMode(GL_PROJECTION);
 424         glPushMatrix();
 425         glLoadIdentity();
 426
 427         glBegin(GL_QUADS);
 428             /* bottom left */
 429             glTexCoord2f(tex_left, tex_bottom);
 430             glVertex2i(-1, -1);
 431
 432             /* top left */
 433             glTexCoord2f(tex_left, tex_top);
 434             glVertex2i(-1, 1);
 435
 436             /* top right */
 437             glTexCoord2f(tex_right, tex_top);
 438             glVertex2i(1, 1);
 439
 440             /* bottom right */
 441             glTexCoord2f(tex_right, tex_bottom);
 442             glVertex2i(1, -1);
 443         glEnd();
 444
 445         glPopMatrix();
 446         glPopAttrib();
 447
 448         device->blitter->unset_shader(context->gl_info);
 449         checkGLcall("Swapchain present blit(manual)\n");
 450         LEAVE_GL();
 451
 452         context_release(context2);
 453     }
 454 }
 455
 456 static void swapchain_gl_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 457         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 458 {
 459     struct wined3d_surface *back_buffer = swapchain->back_buffers[0];
 460     const struct wined3d_fb_state *fb = &swapchain->device->fb;
 461     const struct wined3d_gl_info *gl_info;
 462     struct wined3d_context *context;
 463     RECT src_rect, dst_rect;
 464     BOOL render_to_fbo;
 465
 466     context = context_acquire(swapchain->device, back_buffer);
 467     if (!context->valid)
 468     {
 469         context_release(context);
 470         WARN("Invalid context, skipping present.\n");
 471         return;
 472     }
 473
 474     gl_info = context->gl_info;
 475
 476     /* Render the cursor onto the back buffer, using our nifty directdraw blitting code :-) */
 477     if (swapchain->device->bCursorVisible &&
 478         swapchain->device->cursorTexture &&
 479         !swapchain->device->hardwareCursor)
 480     {
 481         struct wined3d_surface cursor;
 482         RECT destRect =
 483         {
 484             swapchain->device->xScreenSpace - swapchain->device->xHotSpot,
 485             swapchain->device->yScreenSpace - swapchain->device->yHotSpot,
 486             swapchain->device->xScreenSpace + swapchain->device->cursorWidth - swapchain->device->xHotSpot,
 487             swapchain->device->yScreenSpace + swapchain->device->cursorHeight - swapchain->device->yHotSpot,
 488         };
 489         TRACE("Rendering the cursor. Creating fake surface at %p\n", &cursor);
 490         /* Build a fake surface to call the Blitting code. It is not possible to use the interface passed by
 491          * the application because we are only supposed to copy the information out. Using a fake surface
 492          * allows us to use the Blitting engine and avoid copying the whole texture -> render target blitting code.
 493          */
 494         memset(&cursor, 0, sizeof(cursor));
 495         cursor.resource.ref = 1;
 496         cursor.resource.device = swapchain->device;
 497         cursor.resource.pool = WINED3D_POOL_SCRATCH;
 498         cursor.resource.format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
 499         cursor.resource.type = WINED3D_RTYPE_SURFACE;
 500         cursor.texture_name = swapchain->device->cursorTexture;
 501         cursor.texture_target = GL_TEXTURE_2D;
 502         cursor.texture_level = 0;
 503         cursor.resource.width = swapchain->device->cursorWidth;
 504         cursor.resource.height = swapchain->device->cursorHeight;
 505         /* The cursor must have pow2 sizes */
 506         cursor.pow2Width = cursor.resource.width;
 507         cursor.pow2Height = cursor.resource.height;
 508         /* The surface is in the texture */
 509         cursor.flags |= SFLAG_INTEXTURE;
 510         /* DDBLT_KEYSRC will cause BltOverride to enable the alpha test with GL_NOTEQUAL, 0.0,
 511          * which is exactly what we want :-)
 512          */
 513         if (swapchain->desc.windowed)
 514             MapWindowPoints(NULL, swapchain->win_handle, (POINT *)&destRect, 2);
 515         wined3d_surface_blt(back_buffer, &destRect, &cursor, NULL, WINEDDBLT_KEYSRC,
 516                 NULL, WINED3D_TEXF_POINT);
 517     }
 518
 519     if (swapchain->device->logo_surface)
 520     {
 521         struct wined3d_surface *src_surface = swapchain->device->logo_surface;
 522         RECT rect = {0, 0, src_surface->resource.width, src_surface->resource.height};
 523
 524         /* Blit the logo into the upper left corner of the drawable. */
 525         wined3d_surface_blt(back_buffer, &rect, src_surface, &rect, WINEDDBLT_KEYSRC,
 526                 NULL, WINED3D_TEXF_POINT);
 527     }
 528
 529     TRACE("Presenting HDC %p.\n", context->hdc);
 530
 531     render_to_fbo = swapchain->render_to_fbo;
 532
 533     if (src_rect_in)
 534     {
 535         src_rect = *src_rect_in;
 536         if (!render_to_fbo && (src_rect.left || src_rect.top
 537                 || src_rect.right != swapchain->desc.backbuffer_width
 538                 || src_rect.bottom != swapchain->desc.backbuffer_height))
 539         {
 540             render_to_fbo = TRUE;
 541         }
 542     }
 543     else
 544     {
 545         src_rect.left = 0;
 546         src_rect.top = 0;
 547         src_rect.right = swapchain->desc.backbuffer_width;
 548         src_rect.bottom = swapchain->desc.backbuffer_height;
 549     }
 550
 551     if (dst_rect_in)
 552         dst_rect = *dst_rect_in;
 553     else
 554         GetClientRect(swapchain->win_handle, &dst_rect);
 555
 556     if (!render_to_fbo && (dst_rect.left || dst_rect.top
 557             || dst_rect.right != swapchain->desc.backbuffer_width
 558             || dst_rect.bottom != swapchain->desc.backbuffer_height))
 559         render_to_fbo = TRUE;
 560
 561     /* Rendering to a window of different size, presenting partial rectangles,
 562      * or rendering to a different window needs help from FBO_blit or a textured
 563      * draw. Render the swapchain to a FBO in the future.
 564      *
 565      * Note that FBO_blit from the backbuffer to the frontbuffer cannot solve
 566      * all these issues - this fails if the window is smaller than the backbuffer.
 567      */
 568     if (!swapchain->render_to_fbo && render_to_fbo && wined3d_settings.offscreen_rendering_mode == ORM_FBO)
 569     {
 570         surface_load_location(back_buffer, SFLAG_INTEXTURE, NULL);
 571         surface_modify_location(back_buffer, SFLAG_INDRAWABLE, FALSE);
 572         swapchain->render_to_fbo = TRUE;
 573         swapchain_update_draw_bindings(swapchain);
 574     }
 575     else
 576     {
 577         surface_load_location(back_buffer, back_buffer->draw_binding, NULL);
 578     }
 579
 580     if (swapchain->render_to_fbo)
 581     {
 582         /* This codepath should only be hit with the COPY swapeffect. Otherwise a backbuffer-
 583          * window size mismatch is impossible(fullscreen) and src and dst rectangles are
 584          * not allowed(they need the COPY swapeffect)
 585          *
 586          * The DISCARD swap effect is ok as well since any backbuffer content is allowed after
 587          * the swap. */
 588         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 589             FIXME("Render-to-fbo with WINED3D_SWAP_EFFECT_FLIP\n");
 590
 591         swapchain_blit(swapchain, context, &src_rect, &dst_rect);
 592     }
 593
 594     if (swapchain->num_contexts > 1)
 595         wglFinish();
 596     SwapBuffers(context->hdc); /* TODO: cycle through the swapchain buffers */
 597
 598     TRACE("SwapBuffers called, Starting new frame\n");
 599     /* FPS support */
 600     if (TRACE_ON(fps))
 601     {
 602         DWORD time = GetTickCount();
 603         ++swapchain->frames;
 604
 605         /* every 1.5 seconds */
 606         if (time - swapchain->prev_time > 1500)
 607         {
 608             TRACE_(fps)("%p @ approx %.2ffps\n",
 609                     swapchain, 1000.0 * swapchain->frames / (time - swapchain->prev_time));
 610             swapchain->prev_time = time;
 611             swapchain->frames = 0;
 612         }
 613     }
 614
 615     /* This is disabled, but the code left in for debug purposes.
 616      *
 617      * Since we're allowed to modify the new back buffer on a D3DSWAPEFFECT_DISCARD flip,
 618      * we can clear it with some ugly color to make bad drawing visible and ease debugging.
 619      * The Debug runtime does the same on Windows. However, a few games do not redraw the
 620      * screen properly, like Max Payne 2, which leaves a few pixels undefined.
 621      *
 622      * Tests show that the content of the back buffer after a discard flip is indeed not
 623      * reliable, so no game can depend on the exact content. However, it resembles the
 624      * old contents in some way, for example by showing fragments at other locations. In
 625      * general, the color theme is still intact. So Max payne, which draws rather dark scenes
 626      * gets a dark background image. If we clear it with a bright ugly color, the game's
 627      * bug shows up much more than it does on Windows, and the players see single pixels
 628      * with wrong colors.
 629      * (The Max Payne bug has been confirmed on Windows with the debug runtime) */
 630     if (FALSE && swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_DISCARD)
 631     {
 632         static const struct wined3d_color cyan = {0.0f, 1.0f, 1.0f, 1.0f};
 633
 634         TRACE("Clearing the color buffer with cyan color\n");
 635
 636         wined3d_device_clear(swapchain->device, 0, NULL,
 637                 WINED3DCLEAR_TARGET, &cyan, 1.0f, 0);
 638     }
 639
 640     if (!swapchain->render_to_fbo && ((swapchain->front_buffer->flags & SFLAG_INSYSMEM)
 641             || (back_buffer->flags & SFLAG_INSYSMEM)))
 642     {
 643         /* Both memory copies of the surfaces are ok, flip them around too instead of dirtifying
 644          * Doesn't work with render_to_fbo because we're not flipping
 645          */
 646         struct wined3d_surface *front = swapchain->front_buffer;
 647
 648         if (front->resource.size == back_buffer->resource.size)
 649         {
 650             DWORD fbflags;
 651             flip_surface(front, back_buffer);
 652
 653             /* Tell the front buffer surface that is has been modified. However,
 654              * the other locations were preserved during that, so keep the flags.
 655              * This serves to update the emulated overlay, if any. */
 656             fbflags = front->flags;
 657             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 658             front->flags = fbflags;
 659         }
 660         else
 661         {
 662             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 663             surface_modify_location(back_buffer, SFLAG_INDRAWABLE, TRUE);
 664         }
 665     }
 666     else
 667     {
 668         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 669         /* If the swapeffect is DISCARD, the back buffer is undefined. That means the SYSMEM
 670          * and INTEXTURE copies can keep their old content if they have any defined content.
 671          * If the swapeffect is COPY, the content remains the same. If it is FLIP however,
 672          * the texture / sysmem copy needs to be reloaded from the drawable
 673          */
 674         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 675             surface_modify_location(back_buffer, back_buffer->draw_binding, TRUE);
 676     }
 677
 678     if (fb->depth_stencil)
 679     {
 680         if (swapchain->desc.flags & WINED3DPRESENTFLAG_DISCARD_DEPTHSTENCIL
 681                 || fb->depth_stencil->flags & SFLAG_DISCARD)
 682         {
 683             surface_modify_ds_location(fb->depth_stencil, SFLAG_DISCARDED,
 684                     fb->depth_stencil->resource.width,
 685                     fb->depth_stencil->resource.height);
 686             if (fb->depth_stencil == swapchain->device->onscreen_depth_stencil)
 687             {
 688                 wined3d_surface_decref(swapchain->device->onscreen_depth_stencil);
 689                 swapchain->device->onscreen_depth_stencil = NULL;
 690             }
 691         }
 692     }
 693
 694     context_release(context);
 695 }
 696
 697 static const struct wined3d_swapchain_ops swapchain_gl_ops =
 698 {
 699     swapchain_gl_present,
 700 };
 701
 702 /* Helper function that blits the front buffer contents to the target window. */
 703 void x11_copy_to_screen(const struct wined3d_swapchain *swapchain, const RECT *rect)
 704 {
 705     const struct wined3d_surface *front;
 706     POINT offset = {0, 0};
 707     HDC src_dc, dst_dc;
 708     RECT draw_rect;
 709     HWND window;
 710
 711     TRACE("swapchain %p, rect %s.\n", swapchain, wine_dbgstr_rect(rect));
 712
 713     front = swapchain->front_buffer;
 714     if (!(front->resource.usage & WINED3DUSAGE_RENDERTARGET))
 715         return;
 716
 717     if (front->resource.map_count)
 718         ERR("Trying to blit a mapped surface.\n");
 719
 720     TRACE("Copying surface %p to screen.\n", front);
 721
 722     src_dc = front->hDC;
 723     window = swapchain->win_handle;
 724     dst_dc = GetDCEx(window, 0, DCX_CLIPSIBLINGS | DCX_CACHE);
 725
 726     /* Front buffer coordinates are screen coordinates. Map them to the
 727      * destination window if not fullscreened. */
 728     if (swapchain->desc.windowed)
 729         ClientToScreen(window, &offset);
 730
 731     TRACE("offset %s.\n", wine_dbgstr_point(&offset));
 732
 733     draw_rect.left = 0;
 734     draw_rect.right = front->resource.width;
 735     draw_rect.top = 0;
 736     draw_rect.bottom = front->resource.height;
 737
 738     if (rect)
 739         IntersectRect(&draw_rect, &draw_rect, rect);
 740
 741     BitBlt(dst_dc, draw_rect.left - offset.x, draw_rect.top - offset.y,
 742             draw_rect.right - draw_rect.left, draw_rect.bottom - draw_rect.top,
 743             src_dc, draw_rect.left, draw_rect.top, SRCCOPY);
 744     ReleaseDC(window, dst_dc);
 745 }
 746
 747 static void swapchain_gdi_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 748         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 749 {
 750     struct wined3d_surface *front, *back;
 751
 752     front = swapchain->front_buffer;
 753     back = swapchain->back_buffers[0];
 754
 755     /* Flip the DC. */
 756     {
 757         HDC tmp;
 758         tmp = front->hDC;
 759         front->hDC = back->hDC;
 760         back->hDC = tmp;
 761     }
 762
 763     /* Flip the DIBsection. */
 764     {
 765         HBITMAP tmp;
 766         tmp = front->dib.DIBsection;
 767         front->dib.DIBsection = back->dib.DIBsection;
 768         back->dib.DIBsection = tmp;
 769     }
 770
 771     /* Flip the surface data. */
 772     {
 773         void *tmp;
 774
 775         tmp = front->dib.bitmap_data;
 776         front->dib.bitmap_data = back->dib.bitmap_data;
 777         back->dib.bitmap_data = tmp;
 778
 779         tmp = front->resource.allocatedMemory;
 780         front->resource.allocatedMemory = back->resource.allocatedMemory;
 781         back->resource.allocatedMemory = tmp;
 782
 783         if (front->resource.heapMemory)
 784             ERR("GDI Surface %p has heap memory allocated.\n", front);
 785
 786         if (back->resource.heapMemory)
 787             ERR("GDI Surface %p has heap memory allocated.\n", back);
 788     }
 789
 790     /* FPS support */
 791     if (TRACE_ON(fps))
 792     {
 793         static LONG prev_time, frames;
 794         DWORD time = GetTickCount();
 795
 796         ++frames;
 797
 798         /* every 1.5 seconds */
 799         if (time - prev_time > 1500)
 800         {
 801             TRACE_(fps)("@ approx %.2ffps\n", 1000.0 * frames / (time - prev_time));
 802             prev_time = time;
 803             frames = 0;
 804         }
 805     }
 806
 807     x11_copy_to_screen(swapchain, NULL);
 808 }
 809
 810 static const struct wined3d_swapchain_ops swapchain_gdi_ops =
 811 {
 812     swapchain_gdi_present,
 813 };
 814
 815 void swapchain_update_render_to_fbo(struct wined3d_swapchain *swapchain)
 816 {
 817     RECT client_rect;
 818
 819     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
 820         return;
 821
 822     if (!swapchain->desc.backbuffer_count)
 823     {
 824         TRACE("Single buffered rendering.\n");
 825         swapchain->render_to_fbo = FALSE;
 826         return;
 827     }
 828
 829     GetClientRect(swapchain->win_handle, &client_rect);
 830
 831     TRACE("Backbuffer %ux%u, window %ux%u.\n",
 832             swapchain->desc.backbuffer_width,
 833             swapchain->desc.backbuffer_height,
 834             client_rect.right, client_rect.bottom);
 835     TRACE("Multisample type %#x, quality %#x.\n",
 836             swapchain->desc.multisample_type,
 837             swapchain->desc.multisample_quality);
 838
 839     if (!wined3d_settings.always_offscreen && !swapchain->desc.multisample_type
 840             && swapchain->desc.backbuffer_width == client_rect.right
 841             && swapchain->desc.backbuffer_height == client_rect.bottom)
 842     {
 843         TRACE("Backbuffer dimensions match window dimensions, rendering onscreen.\n");
 844         swapchain->render_to_fbo = FALSE;
 845         return;
 846     }
 847
 848     TRACE("Rendering to FBO.\n");
 849     swapchain->render_to_fbo = TRUE;
 850 }
 851
 852 /* Do not call while under the GL lock. */
 853 static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, enum wined3d_surface_type surface_type,
 854         struct wined3d_device *device, struct wined3d_swapchain_desc *desc,
 855         void *parent, const struct wined3d_parent_ops *parent_ops)
 856 {
 857     const struct wined3d_adapter *adapter = device->adapter;
 858     const struct wined3d_format *format;
 859     struct wined3d_display_mode mode;
 860     BOOL displaymode_set = FALSE;
 861     RECT client_rect;
 862     HWND window;
 863     HRESULT hr;
 864     UINT i;
 865
 866     if (desc->backbuffer_count > WINED3DPRESENT_BACK_BUFFER_MAX)
 867     {
 868         FIXME("The application requested %u back buffers, this is not supported.\n",
 869                 desc->backbuffer_count);
 870         return WINED3DERR_INVALIDCALL;
 871     }
 872
 873     if (desc->backbuffer_count > 1)
 874     {
 875         FIXME("The application requested more than one back buffer, this is not properly supported.\n"
 876                 "Please configure the application to use double buffering (1 back buffer) if possible.\n");
 877     }
 878
 879     switch (surface_type)
 880     {
 881         case WINED3D_SURFACE_TYPE_GDI:
 882             swapchain->swapchain_ops = &swapchain_gdi_ops;
 883             break;
 884
 885         case WINED3D_SURFACE_TYPE_OPENGL:
 886             swapchain->swapchain_ops = &swapchain_gl_ops;
 887             break;
 888
 889         default:
 890             ERR("Invalid surface type %#x.\n", surface_type);
 891             return WINED3DERR_INVALIDCALL;
 892     }
 893
 894     window = desc->device_window ? desc->device_window : device->create_parms.focus_window;
 895
 896     swapchain->device = device;
 897     swapchain->parent = parent;
 898     swapchain->parent_ops = parent_ops;
 899     swapchain->ref = 1;
 900     swapchain->win_handle = window;
 901     swapchain->device_window = window;
 902
 903     wined3d_get_adapter_display_mode(device->wined3d, adapter->ordinal, &mode);
 904     swapchain->orig_width = mode.width;
 905     swapchain->orig_height = mode.height;
 906     swapchain->orig_fmt = mode.format_id;
 907     format = wined3d_get_format(&adapter->gl_info, mode.format_id);
 908
 909     GetClientRect(window, &client_rect);
 910     if (desc->windowed
 911             && (!desc->backbuffer_width || !desc->backbuffer_height
 912             || desc->backbuffer_format == WINED3DFMT_UNKNOWN))
 913     {
 914
 915         if (!desc->backbuffer_width)
 916         {
 917             desc->backbuffer_width = client_rect.right;
 918             TRACE("Updating width to %u.\n", desc->backbuffer_width);
 919         }
 920
 921         if (!desc->backbuffer_height)
 922         {
 923             desc->backbuffer_height = client_rect.bottom;
 924             TRACE("Updating height to %u.\n", desc->backbuffer_height);
 925         }
 926
 927         if (desc->backbuffer_format == WINED3DFMT_UNKNOWN)
 928         {
 929             desc->backbuffer_format = swapchain->orig_fmt;
 930             TRACE("Updating format to %s.\n", debug_d3dformat(swapchain->orig_fmt));
 931         }
 932     }
 933     swapchain->desc = *desc;
 934     swapchain_update_render_to_fbo(swapchain);
 935
 936     TRACE("Creating front buffer.\n");
 937     hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
 938             swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
 939             swapchain->desc.backbuffer_format, swapchain->desc.multisample_type,
 940             swapchain->desc.multisample_quality, TRUE /* Lockable */,
 941             &swapchain->front_buffer);
 942     if (FAILED(hr))
 943     {
 944         WARN("Failed to create front buffer, hr %#x.\n", hr);
 945         goto err;
 946     }
 947
 948     surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_SWAPCHAIN, swapchain);
 949     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 950         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 951
 952     /* MSDN says we're only allowed a single fullscreen swapchain per device,
 953      * so we should really check to see if there is a fullscreen swapchain
 954      * already. Does a single head count as full screen? */
 955
 956     if (!desc->windowed)
 957     {
 958         struct wined3d_display_mode mode;
 959
 960         /* Change the display settings */
 961         mode.width = desc->backbuffer_width;
 962         mode.height = desc->backbuffer_height;
 963         mode.format_id = desc->backbuffer_format;
 964         mode.refresh_rate = desc->refresh_rate;
 965
 966         hr = wined3d_device_set_display_mode(device, 0, &mode);
 967         if (FAILED(hr))
 968         {
 969             WARN("Failed to set display mode, hr %#x.\n", hr);
 970             goto err;
 971         }
 972         displaymode_set = TRUE;
 973     }
 974
 975     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 976     {
 977         static const enum wined3d_format_id formats[] =
 978         {
 979             WINED3DFMT_D24_UNORM_S8_UINT,
 980             WINED3DFMT_D32_UNORM,
 981             WINED3DFMT_R24_UNORM_X8_TYPELESS,
 982             WINED3DFMT_D16_UNORM,
 983             WINED3DFMT_S1_UINT_D15_UNORM
 984         };
 985
 986         const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 987
 988         swapchain->context = HeapAlloc(GetProcessHeap(), 0, sizeof(*swapchain->context));
 989         if (!swapchain->context)
 990         {
 991             ERR("Failed to create the context array.\n");
 992             hr = E_OUTOFMEMORY;
 993             goto err;
 994         }
 995         swapchain->num_contexts = 1;
 996
 997         /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
 998          * You are able to add a depth + stencil surface at a later stage when you need it.
 999          * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
1000          * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
1001          * context, need torecreate shaders, textures and other resources.
1002          *
1003          * The context manager already takes care of the state problem and for the other tasks code from Reset
1004          * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
1005          * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
1006          * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
1007          * issue needs to be fixed. */
1008         for (i = 0; i < (sizeof(formats) / sizeof(*formats)); i++)
1009         {
1010             swapchain->ds_format = wined3d_get_format(gl_info, formats[i]);
1011             swapchain->context[0] = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format);
1012             if (swapchain->context[0]) break;
1013             TRACE("Depth stencil format %s is not supported, trying next format\n",
1014                   debug_d3dformat(formats[i]));
1015         }
1016
1017         if (!swapchain->context[0])
1018         {
1019             WARN("Failed to create context.\n");
1020             hr = WINED3DERR_NOTAVAILABLE;
1021             goto err;
1022         }
1023
1024         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
1025                 && (!desc->enable_auto_depth_stencil
1026                 || swapchain->desc.auto_depth_stencil_format != swapchain->ds_format->id))
1027         {
1028             FIXME("Add OpenGL context recreation support to context_validate_onscreen_formats\n");
1029         }
1030         context_release(swapchain->context[0]);
1031     }
1032
1033     if (swapchain->desc.backbuffer_count > 0)
1034     {
1035         swapchain->back_buffers = HeapAlloc(GetProcessHeap(), 0,
1036                 sizeof(*swapchain->back_buffers) * swapchain->desc.backbuffer_count);
1037         if (!swapchain->back_buffers)
1038         {
1039             ERR("Failed to allocate backbuffer array memory.\n");
1040             hr = E_OUTOFMEMORY;
1041             goto err;
1042         }
1043
1044         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1045         {
1046             TRACE("Creating back buffer %u.\n", i);
1047             hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
1048                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1049                     swapchain->desc.backbuffer_format, swapchain->desc.multisample_type,
1050                     swapchain->desc.multisample_quality, TRUE /* Lockable */,
1051                     &swapchain->back_buffers[i]);
1052             if (FAILED(hr))
1053             {
1054                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
1055                 goto err;
1056             }
1057
1058             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
1059         }
1060     }
1061
1062     /* Swapchains share the depth/stencil buffer, so only create a single depthstencil surface. */
1063     if (desc->enable_auto_depth_stencil && surface_type == WINED3D_SURFACE_TYPE_OPENGL)
1064     {
1065         TRACE("Creating depth/stencil buffer.\n");
1066         if (!device->auto_depth_stencil)
1067         {
1068             hr = device->device_parent->ops->create_depth_stencil(device->device_parent,
1069                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1070                     swapchain->desc.auto_depth_stencil_format, swapchain->desc.multisample_type,
1071                     swapchain->desc.multisample_quality, FALSE /* FIXME: Discard */,
1072                     &device->auto_depth_stencil);
1073             if (FAILED(hr))
1074             {
1075                 WARN("Failed to create the auto depth stencil, hr %#x.\n", hr);
1076                 goto err;
1077             }
1078
1079             surface_set_container(device->auto_depth_stencil, WINED3D_CONTAINER_NONE, NULL);
1080         }
1081     }
1082
1083     wined3d_swapchain_get_gamma_ramp(swapchain, &swapchain->orig_gamma);
1084
1085     return WINED3D_OK;
1086
1087 err:
1088     if (displaymode_set)
1089     {
1090         DEVMODEW devmode;
1091
1092         ClipCursor(NULL);
1093
1094         /* Change the display settings */
1095         memset(&devmode, 0, sizeof(devmode));
1096         devmode.dmSize = sizeof(devmode);
1097         devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
1098         devmode.dmBitsPerPel = format->byte_count * CHAR_BIT;
1099         devmode.dmPelsWidth = swapchain->orig_width;
1100         devmode.dmPelsHeight = swapchain->orig_height;
1101         ChangeDisplaySettingsExW(adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);
1102     }
1103
1104     if (swapchain->back_buffers)
1105     {
1106         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1107         {
1108             if (swapchain->back_buffers[i])
1109             {
1110                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
1111                 wined3d_surface_decref(swapchain->back_buffers[i]);
1112             }
1113         }
1114         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
1115     }
1116
1117     if (swapchain->context)
1118     {
1119         if (swapchain->context[0])
1120         {
1121             context_release(swapchain->context[0]);
1122             context_destroy(device, swapchain->context[0]);
1123             swapchain->num_contexts = 0;
1124         }
1125         HeapFree(GetProcessHeap(), 0, swapchain->context);
1126     }
1127
1128     if (swapchain->front_buffer)
1129     {
1130         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
1131         wined3d_surface_decref(swapchain->front_buffer);
1132     }
1133
1134     return hr;
1135 }
1136
1137 /* Do not call while under the GL lock. */
1138 HRESULT CDECL wined3d_swapchain_create(struct wined3d_device *device,
1139         struct wined3d_swapchain_desc *desc, enum wined3d_surface_type surface_type,
1140         void *parent, const struct wined3d_parent_ops *parent_ops,
1141         struct wined3d_swapchain **swapchain)
1142 {
1143     struct wined3d_swapchain *object;
1144     HRESULT hr;
1145
1146     TRACE("device %p, desc %p, swapchain %p, parent %p, surface_type %#x.\n",
1147             device, desc, swapchain, parent, surface_type);
1148
1149     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
1150     if (!object)
1151     {
1152         ERR("Failed to allocate swapchain memory.\n");
1153         return E_OUTOFMEMORY;
1154     }
1155
1156     hr = swapchain_init(object, surface_type, device, desc, parent, parent_ops);
1157     if (FAILED(hr))
1158     {
1159         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
1160         HeapFree(GetProcessHeap(), 0, object);
1161         return hr;
1162     }
1163
1164     TRACE("Created swapchain %p.\n", object);
1165     *swapchain = object;
1166
1167     return WINED3D_OK;
1168 }
1169
1170 /* Do not call while under the GL lock. */
1171 static struct wined3d_context *swapchain_create_context(struct wined3d_swapchain *swapchain)
1172 {
1173     struct wined3d_context **newArray;
1174     struct wined3d_context *ctx;
1175
1176     TRACE("Creating a new context for swapchain %p, thread %u.\n", swapchain, GetCurrentThreadId());
1177
1178     if (!(ctx = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format)))
1179     {
1180         ERR("Failed to create a new context for the swapchain\n");
1181         return NULL;
1182     }
1183     context_release(ctx);
1184
1185     newArray = HeapAlloc(GetProcessHeap(), 0, sizeof(*newArray) * (swapchain->num_contexts + 1));
1186     if(!newArray) {
1187         ERR("Out of memory when trying to allocate a new context array\n");
1188         context_destroy(swapchain->device, ctx);
1189         return NULL;
1190     }
1191     memcpy(newArray, swapchain->context, sizeof(*newArray) * swapchain->num_contexts);
1192     HeapFree(GetProcessHeap(), 0, swapchain->context);
1193     newArray[swapchain->num_contexts] = ctx;
1194     swapchain->context = newArray;
1195     swapchain->num_contexts++;
1196
1197     TRACE("Returning context %p\n", ctx);
1198     return ctx;
1199 }
1200
1201 void swapchain_destroy_contexts(struct wined3d_swapchain *swapchain)
1202 {
1203     unsigned int i;
1204
1205     for (i = 0; i < swapchain->num_contexts; ++i)
1206     {
1207         context_destroy(swapchain->device, swapchain->context[i]);
1208     }
1209     swapchain->num_contexts = 0;
1210 }
1211
1212 struct wined3d_context *swapchain_get_context(struct wined3d_swapchain *swapchain)
1213 {
1214     DWORD tid = GetCurrentThreadId();
1215     unsigned int i;
1216
1217     for (i = 0; i < swapchain->num_contexts; ++i)
1218     {
1219         if (swapchain->context[i]->tid == tid)
1220             return swapchain->context[i];
1221     }
1222
1223     /* Create a new context for the thread */
1224     return swapchain_create_context(swapchain);
1225 }
1226
1227 void get_drawable_size_swapchain(const struct wined3d_context *context, UINT *width, UINT *height)
1228 {
1229     /* The drawable size of an onscreen drawable is the surface size.
1230      * (Actually: The window size, but the surface is created in window size) */
1231     *width = context->current_rt->resource.width;
1232     *height = context->current_rt->resource.height;
1233 }
1234
1235 HDC swapchain_get_backup_dc(struct wined3d_swapchain *swapchain)
1236 {
1237     if (!swapchain->backup_dc)
1238     {
1239         TRACE("Creating the backup window for swapchain %p.\n", swapchain);
1240
1241         if (!(swapchain->backup_wnd = CreateWindowA(WINED3D_OPENGL_WINDOW_CLASS_NAME, "WineD3D fake window",
1242                 WS_OVERLAPPEDWINDOW, 10, 10, 10, 10, NULL, NULL, NULL, NULL)))
1243         {
1244             ERR("Failed to create a window.\n");
1245             return NULL;
1246         }
1247
1248         if (!(swapchain->backup_dc = GetDC(swapchain->backup_wnd)))
1249         {
1250             ERR("Failed to get a DC.\n");
1251             DestroyWindow(swapchain->backup_wnd);
1252             swapchain->backup_wnd = NULL;
1253             return NULL;
1254         }
1255     }
1256
1257     return swapchain->backup_dc;
1258 }
1259
1260 void swapchain_update_draw_bindings(struct wined3d_swapchain *swapchain)
1261 {
1262     UINT i;
1263
1264     surface_update_draw_binding(swapchain->front_buffer);
1265
1266     for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1267     {
1268         surface_update_draw_binding(swapchain->back_buffers[i]);
1269     }
1270 }