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     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->desc.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, enum wined3d_backbuffer_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->desc.backbuffer_count)
 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         struct wined3d_raster_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,
 225         struct wined3d_display_mode *mode)
 226 {
 227     HRESULT hr;
 228
 229     TRACE("swapchain %p, mode %p.\n", swapchain, mode);
 230
 231     hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d, swapchain->device->adapter->ordinal, mode);
 232
 233     TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
 234             mode->width, mode->height, mode->refresh_rate, debug_d3dformat(mode->format_id));
 235
 236     return hr;
 237 }
 238
 239 struct wined3d_device * CDECL wined3d_swapchain_get_device(const struct wined3d_swapchain *swapchain)
 240 {
 241     TRACE("swapchain %p.\n", swapchain);
 242
 243     return swapchain->device;
 244 }
 245
 246 HRESULT CDECL wined3d_swapchain_get_desc(const struct wined3d_swapchain *swapchain,
 247         struct wined3d_swapchain_desc *desc)
 248 {
 249     TRACE("swapchain %p, desc %p.\n", swapchain, desc);
 250
 251     *desc = swapchain->desc;
 252
 253     return WINED3D_OK;
 254 }
 255
 256 HRESULT CDECL wined3d_swapchain_set_gamma_ramp(const struct wined3d_swapchain *swapchain,
 257         DWORD flags, const struct wined3d_gamma_ramp *ramp)
 258 {
 259     HDC dc;
 260
 261     TRACE("swapchain %p, flags %#x, ramp %p.\n", swapchain, flags, ramp);
 262
 263     if (flags)
 264         FIXME("Ignoring flags %#x.\n", flags);
 265
 266     dc = GetDC(swapchain->device_window);
 267     SetDeviceGammaRamp(dc, (void *)ramp);
 268     ReleaseDC(swapchain->device_window, dc);
 269
 270     return WINED3D_OK;
 271 }
 272
 273 HRESULT CDECL wined3d_swapchain_get_gamma_ramp(const struct wined3d_swapchain *swapchain,
 274         struct wined3d_gamma_ramp *ramp)
 275 {
 276     HDC dc;
 277
 278     TRACE("swapchain %p, ramp %p.\n", swapchain, ramp);
 279
 280     dc = GetDC(swapchain->device_window);
 281     GetDeviceGammaRamp(dc, ramp);
 282     ReleaseDC(swapchain->device_window, dc);
 283
 284     return WINED3D_OK;
 285 }
 286
 287 /* A GL context is provided by the caller */
 288 static void swapchain_blit(const struct wined3d_swapchain *swapchain,
 289         struct wined3d_context *context, const RECT *src_rect, const RECT *dst_rect)
 290 {
 291     struct wined3d_surface *backbuffer = swapchain->back_buffers[0];
 292     UINT src_w = src_rect->right - src_rect->left;
 293     UINT src_h = src_rect->bottom - src_rect->top;
 294     GLenum gl_filter;
 295     const struct wined3d_gl_info *gl_info = context->gl_info;
 296     RECT win_rect;
 297     UINT win_h;
 298
 299     TRACE("swapchain %p, context %p, src_rect %s, dst_rect %s.\n",
 300             swapchain, context, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect));
 301
 302     if (src_w == dst_rect->right - dst_rect->left && src_h == dst_rect->bottom - dst_rect->top)
 303         gl_filter = GL_NEAREST;
 304     else
 305         gl_filter = GL_LINEAR;
 306
 307     GetClientRect(swapchain->win_handle, &win_rect);
 308     win_h = win_rect.bottom - win_rect.top;
 309
 310     if (gl_info->fbo_ops.glBlitFramebuffer && is_identity_fixup(backbuffer->resource.format->color_fixup))
 311     {
 312         DWORD location = SFLAG_INTEXTURE;
 313
 314         if (backbuffer->resource.multisample_type)
 315         {
 316             location = SFLAG_INRB_RESOLVED;
 317             surface_load_location(backbuffer, location, NULL);
 318         }
 319
 320         ENTER_GL();
 321         context_apply_fbo_state_blit(context, GL_READ_FRAMEBUFFER, backbuffer, NULL, location);
 322         glReadBuffer(GL_COLOR_ATTACHMENT0);
 323         context_check_fbo_status(context, GL_READ_FRAMEBUFFER);
 324
 325         context_apply_fbo_state_blit(context, GL_DRAW_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 326         context_set_draw_buffer(context, GL_BACK);
 327         context_invalidate_state(context, STATE_FRAMEBUFFER);
 328
 329         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 330         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
 331         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
 332         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
 333         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
 334
 335         glDisable(GL_SCISSOR_TEST);
 336         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
 337
 338         /* Note that the texture is upside down */
 339         gl_info->fbo_ops.glBlitFramebuffer(src_rect->left, src_rect->top, src_rect->right, src_rect->bottom,
 340                 dst_rect->left, win_h - dst_rect->top, dst_rect->right, win_h - dst_rect->bottom,
 341                 GL_COLOR_BUFFER_BIT, gl_filter);
 342         checkGLcall("Swapchain present blit(EXT_framebuffer_blit)\n");
 343         LEAVE_GL();
 344     }
 345     else
 346     {
 347         struct wined3d_device *device = swapchain->device;
 348         struct wined3d_context *context2;
 349         float tex_left = src_rect->left;
 350         float tex_top = src_rect->top;
 351         float tex_right = src_rect->right;
 352         float tex_bottom = src_rect->bottom;
 353
 354         context2 = context_acquire(device, swapchain->back_buffers[0]);
 355         context_apply_blit_state(context2, device);
 356
 357         if (backbuffer->flags & SFLAG_NORMCOORD)
 358         {
 359             tex_left /= src_w;
 360             tex_right /= src_w;
 361             tex_top /= src_h;
 362             tex_bottom /= src_h;
 363         }
 364
 365         if (is_complex_fixup(backbuffer->resource.format->color_fixup))
 366             gl_filter = GL_NEAREST;
 367
 368         ENTER_GL();
 369         context_apply_fbo_state_blit(context2, GL_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 370
 371         /* Set up the texture. The surface is not in a wined3d_texture
 372          * container, so there are no D3D texture settings to dirtify. */
 373         device->blitter->set_shader(device->blit_priv, context2, backbuffer);
 374         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MIN_FILTER, gl_filter);
 375         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MAG_FILTER, gl_filter);
 376
 377         context_set_draw_buffer(context, GL_BACK);
 378
 379         /* Set the viewport to the destination rectandle, disable any projection
 380          * transformation set up by context_apply_blit_state(), and draw a
 381          * (-1,-1)-(1,1) quad.
 382          *
 383          * Back up viewport and matrix to avoid breaking last_was_blit
 384          *
 385          * Note that context_apply_blit_state() set up viewport and ortho to
 386          * match the surface size - we want the GL drawable(=window) size. */
 387         glPushAttrib(GL_VIEWPORT_BIT);
 388         glViewport(dst_rect->left, win_h - dst_rect->bottom, dst_rect->right, win_h - dst_rect->top);
 389         glMatrixMode(GL_PROJECTION);
 390         glPushMatrix();
 391         glLoadIdentity();
 392
 393         glBegin(GL_QUADS);
 394             /* bottom left */
 395             glTexCoord2f(tex_left, tex_bottom);
 396             glVertex2i(-1, -1);
 397
 398             /* top left */
 399             glTexCoord2f(tex_left, tex_top);
 400             glVertex2i(-1, 1);
 401
 402             /* top right */
 403             glTexCoord2f(tex_right, tex_top);
 404             glVertex2i(1, 1);
 405
 406             /* bottom right */
 407             glTexCoord2f(tex_right, tex_bottom);
 408             glVertex2i(1, -1);
 409         glEnd();
 410
 411         glPopMatrix();
 412         glPopAttrib();
 413
 414         device->blitter->unset_shader(context->gl_info);
 415         checkGLcall("Swapchain present blit(manual)\n");
 416         LEAVE_GL();
 417
 418         context_release(context2);
 419     }
 420 }
 421
 422 static HRESULT swapchain_gl_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 423         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 424 {
 425     const struct wined3d_fb_state *fb = &swapchain->device->fb;
 426     const struct wined3d_gl_info *gl_info;
 427     struct wined3d_context *context;
 428     RECT src_rect, dst_rect;
 429     BOOL render_to_fbo;
 430
 431     context = context_acquire(swapchain->device, swapchain->back_buffers[0]);
 432     if (!context->valid)
 433     {
 434         context_release(context);
 435         WARN("Invalid context, skipping present.\n");
 436         return WINED3D_OK;
 437     }
 438
 439     gl_info = context->gl_info;
 440
 441     /* Render the cursor onto the back buffer, using our nifty directdraw blitting code :-) */
 442     if (swapchain->device->bCursorVisible &&
 443         swapchain->device->cursorTexture &&
 444         !swapchain->device->hardwareCursor)
 445     {
 446         struct wined3d_surface cursor;
 447         RECT destRect =
 448         {
 449             swapchain->device->xScreenSpace - swapchain->device->xHotSpot,
 450             swapchain->device->yScreenSpace - swapchain->device->yHotSpot,
 451             swapchain->device->xScreenSpace + swapchain->device->cursorWidth - swapchain->device->xHotSpot,
 452             swapchain->device->yScreenSpace + swapchain->device->cursorHeight - swapchain->device->yHotSpot,
 453         };
 454         TRACE("Rendering the cursor. Creating fake surface at %p\n", &cursor);
 455         /* Build a fake surface to call the Blitting code. It is not possible to use the interface passed by
 456          * the application because we are only supposed to copy the information out. Using a fake surface
 457          * allows to use the Blitting engine and avoid copying the whole texture -> render target blitting code.
 458          */
 459         memset(&cursor, 0, sizeof(cursor));
 460         cursor.resource.ref = 1;
 461         cursor.resource.device = swapchain->device;
 462         cursor.resource.pool = WINED3DPOOL_SCRATCH;
 463         cursor.resource.format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
 464         cursor.resource.resourceType = WINED3DRTYPE_SURFACE;
 465         cursor.texture_name = swapchain->device->cursorTexture;
 466         cursor.texture_target = GL_TEXTURE_2D;
 467         cursor.texture_level = 0;
 468         cursor.resource.width = swapchain->device->cursorWidth;
 469         cursor.resource.height = swapchain->device->cursorHeight;
 470         /* The cursor must have pow2 sizes */
 471         cursor.pow2Width = cursor.resource.width;
 472         cursor.pow2Height = cursor.resource.height;
 473         /* The surface is in the texture */
 474         cursor.flags |= SFLAG_INTEXTURE;
 475         /* DDBLT_KEYSRC will cause BltOverride to enable the alpha test with GL_NOTEQUAL, 0.0,
 476          * which is exactly what we want :-)
 477          */
 478         if (swapchain->desc.windowed)
 479             MapWindowPoints(NULL, swapchain->win_handle, (LPPOINT)&destRect, 2);
 480         wined3d_surface_blt(swapchain->back_buffers[0], &destRect,
 481                 &cursor, NULL, WINEDDBLT_KEYSRC, NULL, WINED3DTEXF_POINT);
 482     }
 483
 484     if (swapchain->device->logo_surface)
 485     {
 486         struct wined3d_surface *src_surface = swapchain->device->logo_surface;
 487         RECT rect = {0, 0, src_surface->resource.width, src_surface->resource.height};
 488
 489         /* Blit the logo into the upper left corner of the drawable. */
 490         wined3d_surface_blt(swapchain->back_buffers[0], &rect, src_surface, &rect,
 491                  WINEDDBLT_KEYSRC, NULL, WINED3DTEXF_POINT);
 492     }
 493
 494     TRACE("Presenting HDC %p.\n", context->hdc);
 495
 496     render_to_fbo = swapchain->render_to_fbo;
 497
 498     if (src_rect_in)
 499     {
 500         src_rect = *src_rect_in;
 501         if (!render_to_fbo && (src_rect.left || src_rect.top
 502                 || src_rect.right != swapchain->desc.backbuffer_width
 503                 || src_rect.bottom != swapchain->desc.backbuffer_height))
 504         {
 505             render_to_fbo = TRUE;
 506         }
 507     }
 508     else
 509     {
 510         src_rect.left = 0;
 511         src_rect.top = 0;
 512         src_rect.right = swapchain->desc.backbuffer_width;
 513         src_rect.bottom = swapchain->desc.backbuffer_height;
 514     }
 515
 516     if (dst_rect_in)
 517         dst_rect = *dst_rect_in;
 518     else
 519         GetClientRect(swapchain->win_handle, &dst_rect);
 520
 521     if (!render_to_fbo && (dst_rect.left || dst_rect.top
 522             || dst_rect.right != swapchain->desc.backbuffer_width
 523             || dst_rect.bottom != swapchain->desc.backbuffer_height))
 524         render_to_fbo = TRUE;
 525
 526     /* Rendering to a window of different size, presenting partial rectangles,
 527      * or rendering to a different window needs help from FBO_blit or a textured
 528      * draw. Render the swapchain to a FBO in the future.
 529      *
 530      * Note that FBO_blit from the backbuffer to the frontbuffer cannot solve
 531      * all these issues - this fails if the window is smaller than the backbuffer.
 532      */
 533     if (!swapchain->render_to_fbo && render_to_fbo && wined3d_settings.offscreen_rendering_mode == ORM_FBO)
 534     {
 535         surface_load_location(swapchain->back_buffers[0], SFLAG_INTEXTURE, NULL);
 536         surface_modify_location(swapchain->back_buffers[0], SFLAG_INDRAWABLE, FALSE);
 537         swapchain->render_to_fbo = TRUE;
 538         swapchain_update_draw_bindings(swapchain);
 539     }
 540
 541     if (swapchain->render_to_fbo)
 542     {
 543         /* This codepath should only be hit with the COPY swapeffect. Otherwise a backbuffer-
 544          * window size mismatch is impossible(fullscreen) and src and dst rectangles are
 545          * not allowed(they need the COPY swapeffect)
 546          *
 547          * The DISCARD swap effect is ok as well since any backbuffer content is allowed after
 548          * the swap. */
 549         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 550             FIXME("Render-to-fbo with WINED3D_SWAP_EFFECT_FLIP\n");
 551
 552         swapchain_blit(swapchain, context, &src_rect, &dst_rect);
 553     }
 554
 555     if (swapchain->num_contexts > 1)
 556         wglFinish();
 557     SwapBuffers(context->hdc); /* TODO: cycle through the swapchain buffers */
 558
 559     TRACE("SwapBuffers called, Starting new frame\n");
 560     /* FPS support */
 561     if (TRACE_ON(fps))
 562     {
 563         DWORD time = GetTickCount();
 564         ++swapchain->frames;
 565
 566         /* every 1.5 seconds */
 567         if (time - swapchain->prev_time > 1500)
 568         {
 569             TRACE_(fps)("%p @ approx %.2ffps\n",
 570                     swapchain, 1000.0 * swapchain->frames / (time - swapchain->prev_time));
 571             swapchain->prev_time = time;
 572             swapchain->frames = 0;
 573         }
 574     }
 575
 576     /* This is disabled, but the code left in for debug purposes.
 577      *
 578      * Since we're allowed to modify the new back buffer on a D3DSWAPEFFECT_DISCARD flip,
 579      * we can clear it with some ugly color to make bad drawing visible and ease debugging.
 580      * The Debug runtime does the same on Windows. However, a few games do not redraw the
 581      * screen properly, like Max Payne 2, which leaves a few pixels undefined.
 582      *
 583      * Tests show that the content of the back buffer after a discard flip is indeed not
 584      * reliable, so no game can depend on the exact content. However, it resembles the
 585      * old contents in some way, for example by showing fragments at other locations. In
 586      * general, the color theme is still intact. So Max payne, which draws rather dark scenes
 587      * gets a dark background image. If we clear it with a bright ugly color, the game's
 588      * bug shows up much more than it does on Windows, and the players see single pixels
 589      * with wrong colors.
 590      * (The Max Payne bug has been confirmed on Windows with the debug runtime) */
 591     if (FALSE && swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_DISCARD)
 592     {
 593         static const struct wined3d_color cyan = {0.0f, 1.0f, 1.0f, 1.0f};
 594
 595         TRACE("Clearing the color buffer with cyan color\n");
 596
 597         wined3d_device_clear(swapchain->device, 0, NULL,
 598                 WINED3DCLEAR_TARGET, &cyan, 1.0f, 0);
 599     }
 600
 601     if (!swapchain->render_to_fbo && ((swapchain->front_buffer->flags & SFLAG_INSYSMEM)
 602             || (swapchain->back_buffers[0]->flags & SFLAG_INSYSMEM)))
 603     {
 604         /* Both memory copies of the surfaces are ok, flip them around too instead of dirtifying
 605          * Doesn't work with render_to_fbo because we're not flipping
 606          */
 607         struct wined3d_surface *front = swapchain->front_buffer;
 608         struct wined3d_surface *back = swapchain->back_buffers[0];
 609
 610         if(front->resource.size == back->resource.size) {
 611             DWORD fbflags;
 612             flip_surface(front, back);
 613
 614             /* Tell the front buffer surface that is has been modified. However,
 615              * the other locations were preserved during that, so keep the flags.
 616              * This serves to update the emulated overlay, if any. */
 617             fbflags = front->flags;
 618             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 619             front->flags = fbflags;
 620         }
 621         else
 622         {
 623             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 624             surface_modify_location(back, SFLAG_INDRAWABLE, TRUE);
 625         }
 626     }
 627     else
 628     {
 629         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 630         /* If the swapeffect is DISCARD, the back buffer is undefined. That means the SYSMEM
 631          * and INTEXTURE copies can keep their old content if they have any defined content.
 632          * If the swapeffect is COPY, the content remains the same. If it is FLIP however,
 633          * the texture / sysmem copy needs to be reloaded from the drawable
 634          */
 635         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 636             surface_modify_location(swapchain->back_buffers[0], swapchain->back_buffers[0]->draw_binding, TRUE);
 637     }
 638
 639     if (fb->depth_stencil)
 640     {
 641         if (swapchain->desc.flags & WINED3DPRESENTFLAG_DISCARD_DEPTHSTENCIL
 642                 || fb->depth_stencil->flags & SFLAG_DISCARD)
 643         {
 644             surface_modify_ds_location(fb->depth_stencil, SFLAG_LOST,
 645                     fb->depth_stencil->resource.width,
 646                     fb->depth_stencil->resource.height);
 647             if (fb->depth_stencil == swapchain->device->onscreen_depth_stencil)
 648             {
 649                 wined3d_surface_decref(swapchain->device->onscreen_depth_stencil);
 650                 swapchain->device->onscreen_depth_stencil = NULL;
 651             }
 652         }
 653     }
 654
 655     context_release(context);
 656
 657     TRACE("returning\n");
 658     return WINED3D_OK;
 659 }
 660
 661 static const struct wined3d_swapchain_ops swapchain_gl_ops =
 662 {
 663     swapchain_gl_present,
 664 };
 665
 666 /* Helper function that blits the front buffer contents to the target window. */
 667 void x11_copy_to_screen(const struct wined3d_swapchain *swapchain, const RECT *rect)
 668 {
 669     const struct wined3d_surface *front;
 670     POINT offset = {0, 0};
 671     HDC src_dc, dst_dc;
 672     RECT draw_rect;
 673     HWND window;
 674
 675     TRACE("swapchain %p, rect %s.\n", swapchain, wine_dbgstr_rect(rect));
 676
 677     front = swapchain->front_buffer;
 678     if (!(front->resource.usage & WINED3DUSAGE_RENDERTARGET))
 679         return;
 680
 681     if (front->flags & SFLAG_LOCKED)
 682         ERR("Trying to blit a mapped surface.\n");
 683
 684     TRACE("Copying surface %p to screen.\n", front);
 685
 686     src_dc = front->hDC;
 687     window = swapchain->win_handle;
 688     dst_dc = GetDCEx(window, 0, DCX_CLIPSIBLINGS | DCX_CACHE);
 689
 690     /* Front buffer coordinates are screen coordinates. Map them to the
 691      * destination window if not fullscreened. */
 692     if (swapchain->desc.windowed)
 693         ClientToScreen(window, &offset);
 694
 695     TRACE("offset %s.\n", wine_dbgstr_point(&offset));
 696
 697     draw_rect.left = 0;
 698     draw_rect.right = front->resource.width;
 699     draw_rect.top = 0;
 700     draw_rect.bottom = front->resource.height;
 701
 702     if (rect)
 703         IntersectRect(&draw_rect, &draw_rect, rect);
 704
 705     BitBlt(dst_dc, draw_rect.left - offset.x, draw_rect.top - offset.y,
 706             draw_rect.right - draw_rect.left, draw_rect.bottom - draw_rect.top,
 707             src_dc, draw_rect.left, draw_rect.top, SRCCOPY);
 708     ReleaseDC(window, dst_dc);
 709 }
 710
 711 static HRESULT swapchain_gdi_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 712         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 713 {
 714     struct wined3d_surface *front, *back;
 715
 716     if (!swapchain->back_buffers)
 717     {
 718         WARN("Swapchain doesn't have a backbuffer, returning WINED3DERR_INVALIDCALL\n");
 719         return WINED3DERR_INVALIDCALL;
 720     }
 721     front = swapchain->front_buffer;
 722     back = swapchain->back_buffers[0];
 723
 724     /* Flip the DC. */
 725     {
 726         HDC tmp;
 727         tmp = front->hDC;
 728         front->hDC = back->hDC;
 729         back->hDC = tmp;
 730     }
 731
 732     /* Flip the DIBsection. */
 733     {
 734         HBITMAP tmp;
 735         tmp = front->dib.DIBsection;
 736         front->dib.DIBsection = back->dib.DIBsection;
 737         back->dib.DIBsection = tmp;
 738     }
 739
 740     /* Flip the surface data. */
 741     {
 742         void *tmp;
 743
 744         tmp = front->dib.bitmap_data;
 745         front->dib.bitmap_data = back->dib.bitmap_data;
 746         back->dib.bitmap_data = tmp;
 747
 748         tmp = front->resource.allocatedMemory;
 749         front->resource.allocatedMemory = back->resource.allocatedMemory;
 750         back->resource.allocatedMemory = tmp;
 751
 752         if (front->resource.heapMemory)
 753             ERR("GDI Surface %p has heap memory allocated.\n", front);
 754
 755         if (back->resource.heapMemory)
 756             ERR("GDI Surface %p has heap memory allocated.\n", back);
 757     }
 758
 759     /* FPS support */
 760     if (TRACE_ON(fps))
 761     {
 762         static LONG prev_time, frames;
 763         DWORD time = GetTickCount();
 764
 765         ++frames;
 766
 767         /* every 1.5 seconds */
 768         if (time - prev_time > 1500)
 769         {
 770             TRACE_(fps)("@ approx %.2ffps\n", 1000.0 * frames / (time - prev_time));
 771             prev_time = time;
 772             frames = 0;
 773         }
 774     }
 775
 776     x11_copy_to_screen(swapchain, NULL);
 777
 778     return WINED3D_OK;
 779 }
 780
 781 static const struct wined3d_swapchain_ops swapchain_gdi_ops =
 782 {
 783     swapchain_gdi_present,
 784 };
 785
 786 void swapchain_update_render_to_fbo(struct wined3d_swapchain *swapchain)
 787 {
 788     RECT client_rect;
 789
 790     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
 791         return;
 792
 793     if (!swapchain->desc.backbuffer_count)
 794     {
 795         TRACE("Single buffered rendering.\n");
 796         swapchain->render_to_fbo = FALSE;
 797         return;
 798     }
 799
 800     GetClientRect(swapchain->win_handle, &client_rect);
 801
 802     TRACE("Backbuffer %ux%u, window %ux%u.\n",
 803             swapchain->desc.backbuffer_width,
 804             swapchain->desc.backbuffer_height,
 805             client_rect.right, client_rect.bottom);
 806     TRACE("Multisample type %#x, quality %#x.\n",
 807             swapchain->desc.multisample_type,
 808             swapchain->desc.multisample_quality);
 809
 810     if (!wined3d_settings.always_offscreen && !swapchain->desc.multisample_type
 811             && swapchain->desc.backbuffer_width == client_rect.right
 812             && swapchain->desc.backbuffer_height == client_rect.bottom)
 813     {
 814         TRACE("Backbuffer dimensions match window dimensions, rendering onscreen.\n");
 815         swapchain->render_to_fbo = FALSE;
 816         return;
 817     }
 818
 819     TRACE("Rendering to FBO.\n");
 820     swapchain->render_to_fbo = TRUE;
 821 }
 822
 823 /* Do not call while under the GL lock. */
 824 static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, WINED3DSURFTYPE surface_type,
 825         struct wined3d_device *device, struct wined3d_swapchain_desc *desc,
 826         void *parent, const struct wined3d_parent_ops *parent_ops)
 827 {
 828     const struct wined3d_adapter *adapter = device->adapter;
 829     const struct wined3d_format *format;
 830     struct wined3d_display_mode mode;
 831     BOOL displaymode_set = FALSE;
 832     RECT client_rect;
 833     HWND window;
 834     HRESULT hr;
 835     UINT i;
 836
 837     if (desc->backbuffer_count > WINED3DPRESENT_BACK_BUFFER_MAX)
 838     {
 839         FIXME("The application requested %u back buffers, this is not supported.\n",
 840                 desc->backbuffer_count);
 841         return WINED3DERR_INVALIDCALL;
 842     }
 843
 844     if (desc->backbuffer_count > 1)
 845     {
 846         FIXME("The application requested more than one back buffer, this is not properly supported.\n"
 847                 "Please configure the application to use double buffering (1 back buffer) if possible.\n");
 848     }
 849
 850     switch (surface_type)
 851     {
 852         case SURFACE_GDI:
 853             swapchain->swapchain_ops = &swapchain_gdi_ops;
 854             break;
 855
 856         case SURFACE_OPENGL:
 857             swapchain->swapchain_ops = &swapchain_gl_ops;
 858             break;
 859
 860         default:
 861             ERR("Invalid surface type %#x.\n", surface_type);
 862             return WINED3DERR_INVALIDCALL;
 863     }
 864
 865     window = desc->device_window ? desc->device_window : device->create_parms.focus_window;
 866
 867     swapchain->device = device;
 868     swapchain->parent = parent;
 869     swapchain->parent_ops = parent_ops;
 870     swapchain->ref = 1;
 871     swapchain->win_handle = window;
 872     swapchain->device_window = window;
 873
 874     wined3d_get_adapter_display_mode(device->wined3d, adapter->ordinal, &mode);
 875     swapchain->orig_width = mode.width;
 876     swapchain->orig_height = mode.height;
 877     swapchain->orig_fmt = mode.format_id;
 878     format = wined3d_get_format(&adapter->gl_info, mode.format_id);
 879
 880     GetClientRect(window, &client_rect);
 881     if (desc->windowed
 882             && (!desc->backbuffer_width || !desc->backbuffer_height
 883             || desc->backbuffer_format == WINED3DFMT_UNKNOWN))
 884     {
 885
 886         if (!desc->backbuffer_width)
 887         {
 888             desc->backbuffer_width = client_rect.right;
 889             TRACE("Updating width to %u.\n", desc->backbuffer_width);
 890         }
 891
 892         if (!desc->backbuffer_height)
 893         {
 894             desc->backbuffer_height = client_rect.bottom;
 895             TRACE("Updating height to %u.\n", desc->backbuffer_height);
 896         }
 897
 898         if (desc->backbuffer_format == WINED3DFMT_UNKNOWN)
 899         {
 900             desc->backbuffer_format = swapchain->orig_fmt;
 901             TRACE("Updating format to %s.\n", debug_d3dformat(swapchain->orig_fmt));
 902         }
 903     }
 904     swapchain->desc = *desc;
 905     swapchain_update_render_to_fbo(swapchain);
 906
 907     TRACE("Creating front buffer.\n");
 908     hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
 909             swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
 910             swapchain->desc.backbuffer_format, swapchain->desc.multisample_type,
 911             swapchain->desc.multisample_quality, TRUE /* Lockable */,
 912             &swapchain->front_buffer);
 913     if (FAILED(hr))
 914     {
 915         WARN("Failed to create front buffer, hr %#x.\n", hr);
 916         goto err;
 917     }
 918
 919     surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_SWAPCHAIN, swapchain);
 920     if (surface_type == SURFACE_OPENGL)
 921     {
 922         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 923     }
 924
 925     /* MSDN says we're only allowed a single fullscreen swapchain per device,
 926      * so we should really check to see if there is a fullscreen swapchain
 927      * already. Does a single head count as full screen? */
 928
 929     if (!desc->windowed)
 930     {
 931         struct wined3d_display_mode mode;
 932
 933         /* Change the display settings */
 934         mode.width = desc->backbuffer_width;
 935         mode.height = desc->backbuffer_height;
 936         mode.format_id = desc->backbuffer_format;
 937         mode.refresh_rate = desc->refresh_rate;
 938
 939         hr = wined3d_device_set_display_mode(device, 0, &mode);
 940         if (FAILED(hr))
 941         {
 942             WARN("Failed to set display mode, hr %#x.\n", hr);
 943             goto err;
 944         }
 945         displaymode_set = TRUE;
 946     }
 947
 948     if (surface_type == SURFACE_OPENGL)
 949     {
 950         static const enum wined3d_format_id formats[] =
 951         {
 952             WINED3DFMT_D24_UNORM_S8_UINT,
 953             WINED3DFMT_D32_UNORM,
 954             WINED3DFMT_R24_UNORM_X8_TYPELESS,
 955             WINED3DFMT_D16_UNORM,
 956             WINED3DFMT_S1_UINT_D15_UNORM
 957         };
 958
 959         const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 960
 961         swapchain->context = HeapAlloc(GetProcessHeap(), 0, sizeof(*swapchain->context));
 962         if (!swapchain->context)
 963         {
 964             ERR("Failed to create the context array.\n");
 965             hr = E_OUTOFMEMORY;
 966             goto err;
 967         }
 968         swapchain->num_contexts = 1;
 969
 970         /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
 971          * You are able to add a depth + stencil surface at a later stage when you need it.
 972          * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
 973          * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
 974          * context, need torecreate shaders, textures and other resources.
 975          *
 976          * The context manager already takes care of the state problem and for the other tasks code from Reset
 977          * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
 978          * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
 979          * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
 980          * issue needs to be fixed. */
 981         for (i = 0; i < (sizeof(formats) / sizeof(*formats)); i++)
 982         {
 983             swapchain->ds_format = wined3d_get_format(gl_info, formats[i]);
 984             swapchain->context[0] = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format);
 985             if (swapchain->context[0]) break;
 986             TRACE("Depth stencil format %s is not supported, trying next format\n",
 987                   debug_d3dformat(formats[i]));
 988         }
 989
 990         if (!swapchain->context[0])
 991         {
 992             WARN("Failed to create context.\n");
 993             hr = WINED3DERR_NOTAVAILABLE;
 994             goto err;
 995         }
 996
 997         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
 998                 && (!desc->enable_auto_depth_stencil
 999                 || swapchain->desc.auto_depth_stencil_format != swapchain->ds_format->id))
1000         {
1001             FIXME("Add OpenGL context recreation support to context_validate_onscreen_formats\n");
1002         }
1003         context_release(swapchain->context[0]);
1004     }
1005
1006     if (swapchain->desc.backbuffer_count > 0)
1007     {
1008         swapchain->back_buffers = HeapAlloc(GetProcessHeap(), 0,
1009                 sizeof(*swapchain->back_buffers) * swapchain->desc.backbuffer_count);
1010         if (!swapchain->back_buffers)
1011         {
1012             ERR("Failed to allocate backbuffer array memory.\n");
1013             hr = E_OUTOFMEMORY;
1014             goto err;
1015         }
1016
1017         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1018         {
1019             TRACE("Creating back buffer %u.\n", i);
1020             hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
1021                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1022                     swapchain->desc.backbuffer_format, swapchain->desc.multisample_type,
1023                     swapchain->desc.multisample_quality, TRUE /* Lockable */,
1024                     &swapchain->back_buffers[i]);
1025             if (FAILED(hr))
1026             {
1027                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
1028                 goto err;
1029             }
1030
1031             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
1032         }
1033     }
1034
1035     /* Swapchains share the depth/stencil buffer, so only create a single depthstencil surface. */
1036     if (desc->enable_auto_depth_stencil && surface_type == SURFACE_OPENGL)
1037     {
1038         TRACE("Creating depth/stencil buffer.\n");
1039         if (!device->auto_depth_stencil)
1040         {
1041             hr = device->device_parent->ops->create_depth_stencil(device->device_parent,
1042                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1043                     swapchain->desc.auto_depth_stencil_format, swapchain->desc.multisample_type,
1044                     swapchain->desc.multisample_quality, FALSE /* FIXME: Discard */,
1045                     &device->auto_depth_stencil);
1046             if (FAILED(hr))
1047             {
1048                 WARN("Failed to create the auto depth stencil, hr %#x.\n", hr);
1049                 goto err;
1050             }
1051
1052             surface_set_container(device->auto_depth_stencil, WINED3D_CONTAINER_NONE, NULL);
1053         }
1054     }
1055
1056     wined3d_swapchain_get_gamma_ramp(swapchain, &swapchain->orig_gamma);
1057
1058     return WINED3D_OK;
1059
1060 err:
1061     if (displaymode_set)
1062     {
1063         DEVMODEW devmode;
1064
1065         ClipCursor(NULL);
1066
1067         /* Change the display settings */
1068         memset(&devmode, 0, sizeof(devmode));
1069         devmode.dmSize = sizeof(devmode);
1070         devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
1071         devmode.dmBitsPerPel = format->byte_count * CHAR_BIT;
1072         devmode.dmPelsWidth = swapchain->orig_width;
1073         devmode.dmPelsHeight = swapchain->orig_height;
1074         ChangeDisplaySettingsExW(adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);
1075     }
1076
1077     if (swapchain->back_buffers)
1078     {
1079         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1080         {
1081             if (swapchain->back_buffers[i])
1082             {
1083                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
1084                 wined3d_surface_decref(swapchain->back_buffers[i]);
1085             }
1086         }
1087         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
1088     }
1089
1090     if (swapchain->context)
1091     {
1092         if (swapchain->context[0])
1093         {
1094             context_release(swapchain->context[0]);
1095             context_destroy(device, swapchain->context[0]);
1096             swapchain->num_contexts = 0;
1097         }
1098         HeapFree(GetProcessHeap(), 0, swapchain->context);
1099     }
1100
1101     if (swapchain->front_buffer)
1102     {
1103         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
1104         wined3d_surface_decref(swapchain->front_buffer);
1105     }
1106
1107     return hr;
1108 }
1109
1110 /* Do not call while under the GL lock. */
1111 HRESULT CDECL wined3d_swapchain_create(struct wined3d_device *device,
1112         struct wined3d_swapchain_desc *desc, WINED3DSURFTYPE surface_type,
1113         void *parent, const struct wined3d_parent_ops *parent_ops,
1114         struct wined3d_swapchain **swapchain)
1115 {
1116     struct wined3d_swapchain *object;
1117     HRESULT hr;
1118
1119     TRACE("device %p, desc %p, swapchain %p, parent %p, surface_type %#x.\n",
1120             device, desc, swapchain, parent, surface_type);
1121
1122     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
1123     if (!object)
1124     {
1125         ERR("Failed to allocate swapchain memory.\n");
1126         return E_OUTOFMEMORY;
1127     }
1128
1129     hr = swapchain_init(object, surface_type, device, desc, parent, parent_ops);
1130     if (FAILED(hr))
1131     {
1132         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
1133         HeapFree(GetProcessHeap(), 0, object);
1134         return hr;
1135     }
1136
1137     TRACE("Created swapchain %p.\n", object);
1138     *swapchain = object;
1139
1140     return WINED3D_OK;
1141 }
1142
1143 /* Do not call while under the GL lock. */
1144 static struct wined3d_context *swapchain_create_context(struct wined3d_swapchain *swapchain)
1145 {
1146     struct wined3d_context **newArray;
1147     struct wined3d_context *ctx;
1148
1149     TRACE("Creating a new context for swapchain %p, thread %u.\n", swapchain, GetCurrentThreadId());
1150
1151     if (!(ctx = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format)))
1152     {
1153         ERR("Failed to create a new context for the swapchain\n");
1154         return NULL;
1155     }
1156     context_release(ctx);
1157
1158     newArray = HeapAlloc(GetProcessHeap(), 0, sizeof(*newArray) * (swapchain->num_contexts + 1));
1159     if(!newArray) {
1160         ERR("Out of memory when trying to allocate a new context array\n");
1161         context_destroy(swapchain->device, ctx);
1162         return NULL;
1163     }
1164     memcpy(newArray, swapchain->context, sizeof(*newArray) * swapchain->num_contexts);
1165     HeapFree(GetProcessHeap(), 0, swapchain->context);
1166     newArray[swapchain->num_contexts] = ctx;
1167     swapchain->context = newArray;
1168     swapchain->num_contexts++;
1169
1170     TRACE("Returning context %p\n", ctx);
1171     return ctx;
1172 }
1173
1174 void swapchain_destroy_contexts(struct wined3d_swapchain *swapchain)
1175 {
1176     unsigned int i;
1177
1178     for (i = 0; i < swapchain->num_contexts; ++i)
1179     {
1180         context_destroy(swapchain->device, swapchain->context[i]);
1181     }
1182     swapchain->num_contexts = 0;
1183 }
1184
1185 struct wined3d_context *swapchain_get_context(struct wined3d_swapchain *swapchain)
1186 {
1187     DWORD tid = GetCurrentThreadId();
1188     unsigned int i;
1189
1190     for (i = 0; i < swapchain->num_contexts; ++i)
1191     {
1192         if (swapchain->context[i]->tid == tid)
1193             return swapchain->context[i];
1194     }
1195
1196     /* Create a new context for the thread */
1197     return swapchain_create_context(swapchain);
1198 }
1199
1200 void get_drawable_size_swapchain(const struct wined3d_context *context, UINT *width, UINT *height)
1201 {
1202     /* The drawable size of an onscreen drawable is the surface size.
1203      * (Actually: The window size, but the surface is created in window size) */
1204     *width = context->current_rt->resource.width;
1205     *height = context->current_rt->resource.height;
1206 }
1207
1208 HDC swapchain_get_backup_dc(struct wined3d_swapchain *swapchain)
1209 {
1210     if (!swapchain->backup_dc)
1211     {
1212         TRACE("Creating the backup window for swapchain %p.\n", swapchain);
1213
1214         if (!(swapchain->backup_wnd = CreateWindowA(WINED3D_OPENGL_WINDOW_CLASS_NAME, "WineD3D fake window",
1215                 WS_OVERLAPPEDWINDOW, 10, 10, 10, 10, NULL, NULL, NULL, NULL)))
1216         {
1217             ERR("Failed to create a window.\n");
1218             return NULL;
1219         }
1220
1221         if (!(swapchain->backup_dc = GetDC(swapchain->backup_wnd)))
1222         {
1223             ERR("Failed to get a DC.\n");
1224             DestroyWindow(swapchain->backup_wnd);
1225             swapchain->backup_wnd = NULL;
1226             return NULL;
1227         }
1228     }
1229
1230     return swapchain->backup_dc;
1231 }
1232
1233 void swapchain_update_draw_bindings(struct wined3d_swapchain *swapchain)
1234 {
1235     UINT i;
1236
1237     surface_update_draw_binding(swapchain->front_buffer);
1238
1239     for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1240     {
1241         surface_update_draw_binding(swapchain->back_buffers[i]);
1242     }
1243 }