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

   1 /*
   2  * Copyright 2002-2003 Jason Edmeades
   3  * Copyright 2002-2003 Raphael Junqueira
   4  * Copyright 2005 Oliver Stieber
   5  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
   6  * Copyright 2011 Henri Verbeet for CodeWeavers
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wined3d_private.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  27 WINE_DECLARE_DEBUG_CHANNEL(fps);
  28
  29 /* Do not call while under the GL lock. */
  30 static void swapchain_cleanup(struct wined3d_swapchain *swapchain)
  31 {
  32     WINED3DDISPLAYMODE mode;
  33     UINT i;
  34
  35     TRACE("Destroying swapchain %p.\n", swapchain);
  36
  37     wined3d_swapchain_set_gamma_ramp(swapchain, 0, &swapchain->orig_gamma);
  38
  39     /* Release the swapchain's draw buffers. Make sure swapchain->back_buffers[0]
  40      * is the last buffer to be destroyed, FindContext() depends on that. */
  41     if (swapchain->front_buffer)
  42     {
  43         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
  44         if (wined3d_surface_decref(swapchain->front_buffer))
  45             WARN("Something's still holding the front buffer (%p).\n", swapchain->front_buffer);
  46         swapchain->front_buffer = NULL;
  47     }
  48
  49     if (swapchain->back_buffers)
  50     {
  51         i = swapchain->presentParms.BackBufferCount;
  52
  53         while (i--)
  54         {
  55             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
  56             if (wined3d_surface_decref(swapchain->back_buffers[i]))
  57                 WARN("Something's still holding back buffer %u (%p).\n", i, swapchain->back_buffers[i]);
  58         }
  59         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
  60         swapchain->back_buffers = NULL;
  61     }
  62
  63     for (i = 0; i < swapchain->num_contexts; ++i)
  64     {
  65         context_destroy(swapchain->device, swapchain->context[i]);
  66     }
  67     HeapFree(GetProcessHeap(), 0, swapchain->context);
  68
  69     /* Restore the screen resolution if we rendered in fullscreen.
  70      * This will restore the screen resolution to what it was before creating
  71      * the swapchain. In case of d3d8 and d3d9 this will be the original
  72      * desktop resolution. In case of d3d7 this will be a NOP because ddraw
  73      * sets the resolution before starting up Direct3D, thus orig_width and
  74      * orig_height will be equal to the modes in the presentation params. */
  75     if (!swapchain->presentParms.Windowed && swapchain->presentParms.AutoRestoreDisplayMode)
  76     {
  77         mode.Width = swapchain->orig_width;
  78         mode.Height = swapchain->orig_height;
  79         mode.RefreshRate = 0;
  80         mode.Format = swapchain->orig_fmt;
  81         wined3d_device_set_display_mode(swapchain->device, 0, &mode);
  82     }
  83
  84     if (swapchain->backup_dc)
  85     {
  86         TRACE("Destroying backup wined3d window %p, dc %p.\n", swapchain->backup_wnd, swapchain->backup_dc);
  87
  88         ReleaseDC(swapchain->backup_wnd, swapchain->backup_dc);
  89         DestroyWindow(swapchain->backup_wnd);
  90     }
  91 }
  92
  93 ULONG CDECL wined3d_swapchain_incref(struct wined3d_swapchain *swapchain)
  94 {
  95     ULONG refcount = InterlockedIncrement(&swapchain->ref);
  96
  97     TRACE("%p increasing refcount to %u.\n", swapchain, refcount);
  98
  99     return refcount;
 100 }
 101
 102 /* Do not call while under the GL lock. */
 103 ULONG CDECL wined3d_swapchain_decref(struct wined3d_swapchain *swapchain)
 104 {
 105     ULONG refcount = InterlockedDecrement(&swapchain->ref);
 106
 107     TRACE("%p decreasing refcount to %u.\n", swapchain, refcount);
 108
 109     if (!refcount)
 110     {
 111         swapchain_cleanup(swapchain);
 112         swapchain->parent_ops->wined3d_object_destroyed(swapchain->parent);
 113         HeapFree(GetProcessHeap(), 0, swapchain);
 114     }
 115
 116     return refcount;
 117 }
 118
 119 void * CDECL wined3d_swapchain_get_parent(const struct wined3d_swapchain *swapchain)
 120 {
 121     TRACE("swapchain %p.\n", swapchain);
 122
 123     return swapchain->parent;
 124 }
 125
 126 HRESULT CDECL wined3d_swapchain_set_window(struct wined3d_swapchain *swapchain, HWND window)
 127 {
 128     if (!window)
 129         window = swapchain->device_window;
 130     if (window == swapchain->win_handle)
 131         return WINED3D_OK;
 132
 133     TRACE("Setting swapchain %p window from %p to %p.\n",
 134             swapchain, swapchain->win_handle, window);
 135     swapchain->win_handle = window;
 136
 137     return WINED3D_OK;
 138 }
 139
 140 HRESULT CDECL wined3d_swapchain_present(struct wined3d_swapchain *swapchain,
 141         const RECT *src_rect, const RECT *dst_rect, HWND dst_window_override,
 142         const RGNDATA *dirty_region, DWORD flags)
 143 {
 144     TRACE("swapchain %p, src_rect %s, dst_rect %s, dst_window_override %p, dirty_region %p, flags %#x.\n",
 145             swapchain, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect),
 146             dst_window_override, dirty_region, flags);
 147
 148     wined3d_swapchain_set_window(swapchain, dst_window_override);
 149
 150     return swapchain->swapchain_ops->swapchain_present(swapchain,
 151             src_rect, dst_rect, dirty_region, flags);
 152 }
 153
 154 HRESULT CDECL wined3d_swapchain_get_front_buffer_data(const struct wined3d_swapchain *swapchain,
 155         struct wined3d_surface *dst_surface)
 156 {
 157     POINT offset = {0, 0};
 158
 159     TRACE("swapchain %p, dst_surface %p.\n", swapchain, dst_surface);
 160
 161     if (swapchain->presentParms.Windowed)
 162         MapWindowPoints(swapchain->win_handle, NULL, &offset, 1);
 163
 164     wined3d_surface_bltfast(dst_surface, offset.x, offset.y, swapchain->front_buffer, NULL, 0);
 165
 166     return WINED3D_OK;
 167 }
 168
 169 HRESULT CDECL wined3d_swapchain_get_back_buffer(const struct wined3d_swapchain *swapchain,
 170         UINT back_buffer_idx, WINED3DBACKBUFFER_TYPE type, struct wined3d_surface **back_buffer)
 171 {
 172     TRACE("swapchain %p, back_buffer_idx %u, type %#x, back_buffer %p.\n",
 173             swapchain, back_buffer_idx, type, back_buffer);
 174
 175     /* Return invalid if there is no backbuffer array, otherwise it will
 176      * crash when ddraw is used (there swapchain->back_buffers is always
 177      * NULL). We need this because this function is called from
 178      * stateblock_init_default_state() to get the default scissorrect
 179      * dimensions. */
 180     if (!swapchain->back_buffers || back_buffer_idx >= swapchain->presentParms.BackBufferCount)
 181     {
 182         WARN("Invalid back buffer index.\n");
 183         /* Native d3d9 doesn't set NULL here, just as wine's d3d9. But set it
 184          * here in wined3d to avoid problems in other libs. */
 185         *back_buffer = NULL;
 186         return WINED3DERR_INVALIDCALL;
 187     }
 188
 189     *back_buffer = swapchain->back_buffers[back_buffer_idx];
 190     if (*back_buffer)
 191         wined3d_surface_incref(*back_buffer);
 192
 193     TRACE("Returning back buffer %p.\n", *back_buffer);
 194
 195     return WINED3D_OK;
 196 }
 197
 198 HRESULT CDECL wined3d_swapchain_get_raster_status(const struct wined3d_swapchain *swapchain,
 199         WINED3DRASTER_STATUS *raster_status)
 200 {
 201     static BOOL warned;
 202     /* No OpenGL equivalent */
 203     if (!warned)
 204     {
 205         FIXME("swapchain %p, raster_status %p stub!\n", swapchain, raster_status);
 206         warned = TRUE;
 207     }
 208
 209     /* Obtaining the raster status is a widely implemented but optional
 210      * feature. When this method returns OK StarCraft 2 expects the
 211      * raster_status->InVBlank value to actually change over time. To prevent
 212      * StarCraft 2 from running in an infinite loop at startup this method
 213      * returns INVALIDCALL. */
 214     return WINED3DERR_INVALIDCALL;
 215 }
 216
 217 HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain, WINED3DDISPLAYMODE *mode)
 218 {
 219     HRESULT hr;
 220
 221     TRACE("swapchain %p, mode %p.\n", swapchain, mode);
 222
 223     hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d, swapchain->device->adapter->ordinal, mode);
 224
 225     TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
 226             mode->Width, mode->Height, mode->RefreshRate, debug_d3dformat(mode->Format));
 227
 228     return hr;
 229 }
 230
 231 struct wined3d_device * CDECL wined3d_swapchain_get_device(const struct wined3d_swapchain *swapchain)
 232 {
 233     TRACE("swapchain %p.\n", swapchain);
 234
 235     return swapchain->device;
 236 }
 237
 238 HRESULT CDECL wined3d_swapchain_get_present_parameters(const struct wined3d_swapchain *swapchain,
 239         WINED3DPRESENT_PARAMETERS *present_parameters)
 240 {
 241     TRACE("swapchain %p, present_parameters %p.\n", swapchain, present_parameters);
 242
 243     *present_parameters = swapchain->presentParms;
 244
 245     return WINED3D_OK;
 246 }
 247
 248 HRESULT CDECL wined3d_swapchain_set_gamma_ramp(const struct wined3d_swapchain *swapchain,
 249         DWORD flags, const WINED3DGAMMARAMP *ramp)
 250 {
 251     HDC dc;
 252
 253     TRACE("swapchain %p, flags %#x, ramp %p.\n", swapchain, flags, ramp);
 254
 255     if (flags)
 256         FIXME("Ignoring flags %#x.\n", flags);
 257
 258     dc = GetDC(swapchain->device_window);
 259     SetDeviceGammaRamp(dc, (void *)ramp);
 260     ReleaseDC(swapchain->device_window, dc);
 261
 262     return WINED3D_OK;
 263 }
 264
 265 HRESULT CDECL wined3d_swapchain_get_gamma_ramp(const struct wined3d_swapchain *swapchain,
 266         WINED3DGAMMARAMP *ramp)
 267 {
 268     HDC dc;
 269
 270     TRACE("swapchain %p, ramp %p.\n", swapchain, ramp);
 271
 272     dc = GetDC(swapchain->device_window);
 273     GetDeviceGammaRamp(dc, ramp);
 274     ReleaseDC(swapchain->device_window, dc);
 275
 276     return WINED3D_OK;
 277 }
 278
 279 /* A GL context is provided by the caller */
 280 static void swapchain_blit(const struct wined3d_swapchain *swapchain,
 281         struct wined3d_context *context, const RECT *src_rect, const RECT *dst_rect)
 282 {
 283     struct wined3d_surface *backbuffer = swapchain->back_buffers[0];
 284     UINT src_w = src_rect->right - src_rect->left;
 285     UINT src_h = src_rect->bottom - src_rect->top;
 286     GLenum gl_filter;
 287     const struct wined3d_gl_info *gl_info = context->gl_info;
 288     RECT win_rect;
 289     UINT win_h;
 290
 291     TRACE("swapchain %p, context %p, src_rect %s, dst_rect %s.\n",
 292             swapchain, context, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect));
 293
 294     if (src_w == dst_rect->right - dst_rect->left && src_h == dst_rect->bottom - dst_rect->top)
 295         gl_filter = GL_NEAREST;
 296     else
 297         gl_filter = GL_LINEAR;
 298
 299     GetClientRect(swapchain->win_handle, &win_rect);
 300     win_h = win_rect.bottom - win_rect.top;
 301
 302     if (gl_info->fbo_ops.glBlitFramebuffer && is_identity_fixup(backbuffer->resource.format->color_fixup))
 303     {
 304         DWORD location = SFLAG_INTEXTURE;
 305
 306         if (backbuffer->resource.multisample_type)
 307         {
 308             location = SFLAG_INRB_RESOLVED;
 309             surface_load_location(backbuffer, location, NULL);
 310         }
 311
 312         ENTER_GL();
 313         context_apply_fbo_state_blit(context, GL_READ_FRAMEBUFFER, backbuffer, NULL, location);
 314         glReadBuffer(GL_COLOR_ATTACHMENT0);
 315         context_check_fbo_status(context, GL_READ_FRAMEBUFFER);
 316
 317         context_apply_fbo_state_blit(context, GL_DRAW_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 318         context_set_draw_buffer(context, GL_BACK);
 319         context_invalidate_state(context, STATE_FRAMEBUFFER);
 320
 321         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 322         context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE));
 323         context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE1));
 324         context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE2));
 325         context_invalidate_state(context, STATE_RENDER(WINED3DRS_COLORWRITEENABLE3));
 326
 327         glDisable(GL_SCISSOR_TEST);
 328         context_invalidate_state(context, STATE_RENDER(WINED3DRS_SCISSORTESTENABLE));
 329
 330         /* Note that the texture is upside down */
 331         gl_info->fbo_ops.glBlitFramebuffer(src_rect->left, src_rect->top, src_rect->right, src_rect->bottom,
 332                 dst_rect->left, win_h - dst_rect->top, dst_rect->right, win_h - dst_rect->bottom,
 333                 GL_COLOR_BUFFER_BIT, gl_filter);
 334         checkGLcall("Swapchain present blit(EXT_framebuffer_blit)\n");
 335         LEAVE_GL();
 336     }
 337     else
 338     {
 339         struct wined3d_device *device = swapchain->device;
 340         struct wined3d_context *context2;
 341         float tex_left = src_rect->left;
 342         float tex_top = src_rect->top;
 343         float tex_right = src_rect->right;
 344         float tex_bottom = src_rect->bottom;
 345
 346         context2 = context_acquire(device, swapchain->back_buffers[0]);
 347         context_apply_blit_state(context2, device);
 348
 349         if (backbuffer->flags & SFLAG_NORMCOORD)
 350         {
 351             tex_left /= src_w;
 352             tex_right /= src_w;
 353             tex_top /= src_h;
 354             tex_bottom /= src_h;
 355         }
 356
 357         if (is_complex_fixup(backbuffer->resource.format->color_fixup))
 358             gl_filter = GL_NEAREST;
 359
 360         ENTER_GL();
 361         context_apply_fbo_state_blit(context2, GL_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 362
 363         /* Set up the texture. The surface is not in a wined3d_texture
 364          * container, so there are no D3D texture settings to dirtify. */
 365         device->blitter->set_shader(device->blit_priv, context2, backbuffer);
 366         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MIN_FILTER, gl_filter);
 367         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MAG_FILTER, gl_filter);
 368
 369         context_set_draw_buffer(context, GL_BACK);
 370
 371         /* Set the viewport to the destination rectandle, disable any projection
 372          * transformation set up by context_apply_blit_state(), and draw a
 373          * (-1,-1)-(1,1) quad.
 374          *
 375          * Back up viewport and matrix to avoid breaking last_was_blit
 376          *
 377          * Note that context_apply_blit_state() set up viewport and ortho to
 378          * match the surface size - we want the GL drawable(=window) size. */
 379         glPushAttrib(GL_VIEWPORT_BIT);
 380         glViewport(dst_rect->left, win_h - dst_rect->bottom, dst_rect->right, win_h - dst_rect->top);
 381         glMatrixMode(GL_PROJECTION);
 382         glPushMatrix();
 383         glLoadIdentity();
 384
 385         glBegin(GL_QUADS);
 386             /* bottom left */
 387             glTexCoord2f(tex_left, tex_bottom);
 388             glVertex2i(-1, -1);
 389
 390             /* top left */
 391             glTexCoord2f(tex_left, tex_top);
 392             glVertex2i(-1, 1);
 393
 394             /* top right */
 395             glTexCoord2f(tex_right, tex_top);
 396             glVertex2i(1, 1);
 397
 398             /* bottom right */
 399             glTexCoord2f(tex_right, tex_bottom);
 400             glVertex2i(1, -1);
 401         glEnd();
 402
 403         glPopMatrix();
 404         glPopAttrib();
 405
 406         device->blitter->unset_shader(context->gl_info);
 407         checkGLcall("Swapchain present blit(manual)\n");
 408         LEAVE_GL();
 409
 410         context_release(context2);
 411     }
 412 }
 413
 414 static HRESULT swapchain_gl_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 415         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 416 {
 417     const struct wined3d_fb_state *fb = &swapchain->device->fb;
 418     const struct wined3d_gl_info *gl_info;
 419     struct wined3d_context *context;
 420     RECT src_rect, dst_rect;
 421     BOOL render_to_fbo;
 422
 423     context = context_acquire(swapchain->device, swapchain->back_buffers[0]);
 424     if (!context->valid)
 425     {
 426         context_release(context);
 427         WARN("Invalid context, skipping present.\n");
 428         return WINED3D_OK;
 429     }
 430
 431     gl_info = context->gl_info;
 432
 433     /* Render the cursor onto the back buffer, using our nifty directdraw blitting code :-) */
 434     if (swapchain->device->bCursorVisible &&
 435         swapchain->device->cursorTexture &&
 436         !swapchain->device->hardwareCursor)
 437     {
 438         struct wined3d_surface cursor;
 439         RECT destRect =
 440         {
 441             swapchain->device->xScreenSpace - swapchain->device->xHotSpot,
 442             swapchain->device->yScreenSpace - swapchain->device->yHotSpot,
 443             swapchain->device->xScreenSpace + swapchain->device->cursorWidth - swapchain->device->xHotSpot,
 444             swapchain->device->yScreenSpace + swapchain->device->cursorHeight - swapchain->device->yHotSpot,
 445         };
 446         TRACE("Rendering the cursor. Creating fake surface at %p\n", &cursor);
 447         /* Build a fake surface to call the Blitting code. It is not possible to use the interface passed by
 448          * the application because we are only supposed to copy the information out. Using a fake surface
 449          * allows to use the Blitting engine and avoid copying the whole texture -> render target blitting code.
 450          */
 451         memset(&cursor, 0, sizeof(cursor));
 452         cursor.resource.ref = 1;
 453         cursor.resource.device = swapchain->device;
 454         cursor.resource.pool = WINED3DPOOL_SCRATCH;
 455         cursor.resource.format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
 456         cursor.resource.resourceType = WINED3DRTYPE_SURFACE;
 457         cursor.texture_name = swapchain->device->cursorTexture;
 458         cursor.texture_target = GL_TEXTURE_2D;
 459         cursor.texture_level = 0;
 460         cursor.resource.width = swapchain->device->cursorWidth;
 461         cursor.resource.height = swapchain->device->cursorHeight;
 462         /* The cursor must have pow2 sizes */
 463         cursor.pow2Width = cursor.resource.width;
 464         cursor.pow2Height = cursor.resource.height;
 465         /* The surface is in the texture */
 466         cursor.flags |= SFLAG_INTEXTURE;
 467         /* DDBLT_KEYSRC will cause BltOverride to enable the alpha test with GL_NOTEQUAL, 0.0,
 468          * which is exactly what we want :-)
 469          */
 470         if (swapchain->presentParms.Windowed)
 471             MapWindowPoints(NULL, swapchain->win_handle, (LPPOINT)&destRect, 2);
 472         wined3d_surface_blt(swapchain->back_buffers[0], &destRect,
 473                 &cursor, NULL, WINEDDBLT_KEYSRC, NULL, WINED3DTEXF_POINT);
 474     }
 475
 476     if (swapchain->device->logo_surface)
 477     {
 478         /* Blit the logo into the upper left corner of the drawable. */
 479         wined3d_surface_bltfast(swapchain->back_buffers[0], 0, 0,
 480                 swapchain->device->logo_surface, NULL, WINEDDBLTFAST_SRCCOLORKEY);
 481     }
 482
 483     TRACE("Presenting HDC %p.\n", context->hdc);
 484
 485     render_to_fbo = swapchain->render_to_fbo;
 486
 487     if (src_rect_in)
 488     {
 489         src_rect = *src_rect_in;
 490         if (!render_to_fbo && (src_rect.left || src_rect.top
 491                 || src_rect.right != swapchain->presentParms.BackBufferWidth
 492                 || src_rect.bottom != swapchain->presentParms.BackBufferHeight))
 493         {
 494             render_to_fbo = TRUE;
 495         }
 496     }
 497     else
 498     {
 499         src_rect.left = 0;
 500         src_rect.top = 0;
 501         src_rect.right = swapchain->presentParms.BackBufferWidth;
 502         src_rect.bottom = swapchain->presentParms.BackBufferHeight;
 503     }
 504
 505     if (dst_rect_in)
 506         dst_rect = *dst_rect_in;
 507     else
 508         GetClientRect(swapchain->win_handle, &dst_rect);
 509
 510     if (!render_to_fbo && (dst_rect.left || dst_rect.top
 511             || dst_rect.right != swapchain->presentParms.BackBufferWidth
 512             || dst_rect.bottom != swapchain->presentParms.BackBufferHeight))
 513     {
 514         render_to_fbo = TRUE;
 515     }
 516
 517     /* Rendering to a window of different size, presenting partial rectangles,
 518      * or rendering to a different window needs help from FBO_blit or a textured
 519      * draw. Render the swapchain to a FBO in the future.
 520      *
 521      * Note that FBO_blit from the backbuffer to the frontbuffer cannot solve
 522      * all these issues - this fails if the window is smaller than the backbuffer.
 523      */
 524     if (!swapchain->render_to_fbo && render_to_fbo && wined3d_settings.offscreen_rendering_mode == ORM_FBO)
 525     {
 526         surface_load_location(swapchain->back_buffers[0], SFLAG_INTEXTURE, NULL);
 527         surface_modify_location(swapchain->back_buffers[0], SFLAG_INDRAWABLE, FALSE);
 528         swapchain->render_to_fbo = TRUE;
 529         swapchain_update_draw_bindings(swapchain);
 530     }
 531
 532     if (swapchain->render_to_fbo)
 533     {
 534         /* This codepath should only be hit with the COPY swapeffect. Otherwise a backbuffer-
 535          * window size mismatch is impossible(fullscreen) and src and dst rectangles are
 536          * not allowed(they need the COPY swapeffect)
 537          *
 538          * The DISCARD swap effect is ok as well since any backbuffer content is allowed after
 539          * the swap. */
 540         if (swapchain->presentParms.SwapEffect == WINED3DSWAPEFFECT_FLIP)
 541             FIXME("Render-to-fbo with WINED3DSWAPEFFECT_FLIP\n");
 542
 543         swapchain_blit(swapchain, context, &src_rect, &dst_rect);
 544     }
 545
 546     if (swapchain->num_contexts > 1)
 547         wglFinish();
 548     SwapBuffers(context->hdc); /* TODO: cycle through the swapchain buffers */
 549
 550     TRACE("SwapBuffers called, Starting new frame\n");
 551     /* FPS support */
 552     if (TRACE_ON(fps))
 553     {
 554         DWORD time = GetTickCount();
 555         ++swapchain->frames;
 556
 557         /* every 1.5 seconds */
 558         if (time - swapchain->prev_time > 1500)
 559         {
 560             TRACE_(fps)("%p @ approx %.2ffps\n",
 561                     swapchain, 1000.0 * swapchain->frames / (time - swapchain->prev_time));
 562             swapchain->prev_time = time;
 563             swapchain->frames = 0;
 564         }
 565     }
 566
 567     /* This is disabled, but the code left in for debug purposes.
 568      *
 569      * Since we're allowed to modify the new back buffer on a D3DSWAPEFFECT_DISCARD flip,
 570      * we can clear it with some ugly color to make bad drawing visible and ease debugging.
 571      * The Debug runtime does the same on Windows. However, a few games do not redraw the
 572      * screen properly, like Max Payne 2, which leaves a few pixels undefined.
 573      *
 574      * Tests show that the content of the back buffer after a discard flip is indeed not
 575      * reliable, so no game can depend on the exact content. However, it resembles the
 576      * old contents in some way, for example by showing fragments at other locations. In
 577      * general, the color theme is still intact. So Max payne, which draws rather dark scenes
 578      * gets a dark background image. If we clear it with a bright ugly color, the game's
 579      * bug shows up much more than it does on Windows, and the players see single pixels
 580      * with wrong colors.
 581      * (The Max Payne bug has been confirmed on Windows with the debug runtime) */
 582     if (FALSE && swapchain->presentParms.SwapEffect == WINED3DSWAPEFFECT_DISCARD)
 583     {
 584         TRACE("Clearing the color buffer with cyan color\n");
 585
 586         wined3d_device_clear(swapchain->device, 0, NULL,
 587                 WINED3DCLEAR_TARGET, 0xff00ffff, 1.0f, 0);
 588     }
 589
 590     if (!swapchain->render_to_fbo && ((swapchain->front_buffer->flags & SFLAG_INSYSMEM)
 591             || (swapchain->back_buffers[0]->flags & SFLAG_INSYSMEM)))
 592     {
 593         /* Both memory copies of the surfaces are ok, flip them around too instead of dirtifying
 594          * Doesn't work with render_to_fbo because we're not flipping
 595          */
 596         struct wined3d_surface *front = swapchain->front_buffer;
 597         struct wined3d_surface *back = swapchain->back_buffers[0];
 598
 599         if(front->resource.size == back->resource.size) {
 600             DWORD fbflags;
 601             flip_surface(front, back);
 602
 603             /* Tell the front buffer surface that is has been modified. However,
 604              * the other locations were preserved during that, so keep the flags.
 605              * This serves to update the emulated overlay, if any. */
 606             fbflags = front->flags;
 607             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 608             front->flags = fbflags;
 609         }
 610         else
 611         {
 612             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 613             surface_modify_location(back, SFLAG_INDRAWABLE, TRUE);
 614         }
 615     }
 616     else
 617     {
 618         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 619         /* If the swapeffect is DISCARD, the back buffer is undefined. That means the SYSMEM
 620          * and INTEXTURE copies can keep their old content if they have any defined content.
 621          * If the swapeffect is COPY, the content remains the same. If it is FLIP however,
 622          * the texture / sysmem copy needs to be reloaded from the drawable
 623          */
 624         if (swapchain->presentParms.SwapEffect == WINED3DSWAPEFFECT_FLIP)
 625             surface_modify_location(swapchain->back_buffers[0], swapchain->back_buffers[0]->draw_binding, TRUE);
 626     }
 627
 628     if (fb->depth_stencil)
 629     {
 630         if (swapchain->presentParms.Flags & WINED3DPRESENTFLAG_DISCARD_DEPTHSTENCIL
 631                 || fb->depth_stencil->flags & SFLAG_DISCARD)
 632         {
 633             surface_modify_ds_location(fb->depth_stencil, SFLAG_DS_DISCARDED,
 634                     fb->depth_stencil->resource.width,
 635                     fb->depth_stencil->resource.height);
 636             if (fb->depth_stencil == swapchain->device->onscreen_depth_stencil)
 637             {
 638                 wined3d_surface_decref(swapchain->device->onscreen_depth_stencil);
 639                 swapchain->device->onscreen_depth_stencil = NULL;
 640             }
 641         }
 642     }
 643
 644     context_release(context);
 645
 646     TRACE("returning\n");
 647     return WINED3D_OK;
 648 }
 649
 650 static const struct wined3d_swapchain_ops swapchain_gl_ops =
 651 {
 652     swapchain_gl_present,
 653 };
 654
 655 /* Helper function that blits the front buffer contents to the target window. */
 656 void x11_copy_to_screen(const struct wined3d_swapchain *swapchain, const RECT *rect)
 657 {
 658     const struct wined3d_surface *front;
 659     POINT offset = {0, 0};
 660     HDC src_dc, dst_dc;
 661     RECT draw_rect;
 662     HWND window;
 663
 664     TRACE("swapchain %p, rect %s.\n", swapchain, wine_dbgstr_rect(rect));
 665
 666     front = swapchain->front_buffer;
 667     if (!(front->resource.usage & WINED3DUSAGE_RENDERTARGET))
 668         return;
 669
 670     TRACE("Copying surface %p to screen.\n", front);
 671
 672     src_dc = front->hDC;
 673     window = swapchain->win_handle;
 674     dst_dc = GetDCEx(window, 0, DCX_CLIPSIBLINGS | DCX_CACHE);
 675
 676     /* Front buffer coordinates are screen coordinates. Map them to the
 677      * destination window if not fullscreened. */
 678     if (swapchain->presentParms.Windowed)
 679         ClientToScreen(window, &offset);
 680
 681     TRACE("offset %s.\n", wine_dbgstr_point(&offset));
 682
 683 #if 0
 684     /* FIXME: This doesn't work... if users really want to run
 685      * X in 8bpp, then we need to call directly into display.drv
 686      * (or Wine's equivalent), and force a private colormap
 687      * without default entries. */
 688     if (front->palette)
 689     {
 690         SelectPalette(dst_dc, front->palette->hpal, FALSE);
 691         RealizePalette(dst_dc); /* sends messages => deadlocks */
 692     }
 693 #endif
 694
 695     draw_rect.left = 0;
 696     draw_rect.right = front->resource.width;
 697     draw_rect.top = 0;
 698     draw_rect.bottom = front->resource.height;
 699
 700 #if 0
 701     /* TODO: Support clippers. */
 702     if (front->clipper)
 703     {
 704         RECT xrc;
 705         HWND hwnd = front->clipper->hWnd;
 706         if (hwnd && GetClientRect(hwnd,&xrc))
 707         {
 708             OffsetRect(&xrc, offset.x, offset.y);
 709             IntersectRect(&draw_rect, &draw_rect, &xrc);
 710         }
 711     }
 712 #endif
 713
 714     if (!rect)
 715     {
 716         /* Only use this if the caller did not pass a rectangle, since
 717          * due to double locking this could be the wrong one... */
 718         if (front->lockedRect.left != front->lockedRect.right)
 719             IntersectRect(&draw_rect, &draw_rect, &front->lockedRect);
 720     }
 721     else
 722     {
 723         IntersectRect(&draw_rect, &draw_rect, rect);
 724     }
 725
 726     BitBlt(dst_dc, draw_rect.left - offset.x, draw_rect.top - offset.y,
 727             draw_rect.right - draw_rect.left, draw_rect.bottom - draw_rect.top,
 728             src_dc, draw_rect.left, draw_rect.top, SRCCOPY);
 729     ReleaseDC(window, dst_dc);
 730 }
 731
 732 static HRESULT swapchain_gdi_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 733         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 734 {
 735     struct wined3d_surface *front, *back;
 736
 737     if (!swapchain->back_buffers)
 738     {
 739         WARN("Swapchain doesn't have a backbuffer, returning WINED3DERR_INVALIDCALL\n");
 740         return WINED3DERR_INVALIDCALL;
 741     }
 742     front = swapchain->front_buffer;
 743     back = swapchain->back_buffers[0];
 744
 745     /* Flip the DC. */
 746     {
 747         HDC tmp;
 748         tmp = front->hDC;
 749         front->hDC = back->hDC;
 750         back->hDC = tmp;
 751     }
 752
 753     /* Flip the DIBsection. */
 754     {
 755         HBITMAP tmp;
 756         tmp = front->dib.DIBsection;
 757         front->dib.DIBsection = back->dib.DIBsection;
 758         back->dib.DIBsection = tmp;
 759     }
 760
 761     /* Flip the surface data. */
 762     {
 763         void *tmp;
 764
 765         tmp = front->dib.bitmap_data;
 766         front->dib.bitmap_data = back->dib.bitmap_data;
 767         back->dib.bitmap_data = tmp;
 768
 769         tmp = front->resource.allocatedMemory;
 770         front->resource.allocatedMemory = back->resource.allocatedMemory;
 771         back->resource.allocatedMemory = tmp;
 772
 773         if (front->resource.heapMemory)
 774             ERR("GDI Surface %p has heap memory allocated.\n", front);
 775
 776         if (back->resource.heapMemory)
 777             ERR("GDI Surface %p has heap memory allocated.\n", back);
 778     }
 779
 780     /* Client_memory should not be different, but just in case. */
 781     {
 782         BOOL tmp;
 783         tmp = front->dib.client_memory;
 784         front->dib.client_memory = back->dib.client_memory;
 785         back->dib.client_memory = tmp;
 786     }
 787
 788     /* FPS support */
 789     if (TRACE_ON(fps))
 790     {
 791         static LONG prev_time, frames;
 792         DWORD time = GetTickCount();
 793
 794         ++frames;
 795
 796         /* every 1.5 seconds */
 797         if (time - prev_time > 1500)
 798         {
 799             TRACE_(fps)("@ approx %.2ffps\n", 1000.0 * frames / (time - prev_time));
 800             prev_time = time;
 801             frames = 0;
 802         }
 803     }
 804
 805     x11_copy_to_screen(swapchain, NULL);
 806
 807     return WINED3D_OK;
 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->presentParms.BackBufferCount)
 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->presentParms.BackBufferWidth,
 833             swapchain->presentParms.BackBufferHeight,
 834             client_rect.right, client_rect.bottom);
 835     TRACE("Multisample type %#x, quality %#x.\n",
 836             swapchain->presentParms.MultiSampleType,
 837             swapchain->presentParms.MultiSampleQuality);
 838
 839     if (!wined3d_settings.always_offscreen && !swapchain->presentParms.MultiSampleType
 840             && swapchain->presentParms.BackBufferWidth == client_rect.right
 841             && swapchain->presentParms.BackBufferHeight == 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, WINED3DSURFTYPE surface_type,
 854         struct wined3d_device *device, WINED3DPRESENT_PARAMETERS *present_parameters,
 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     BOOL displaymode_set = FALSE;
 860     WINED3DDISPLAYMODE mode;
 861     RECT client_rect;
 862     HWND window;
 863     HRESULT hr;
 864     UINT i;
 865
 866     if (present_parameters->BackBufferCount > WINED3DPRESENT_BACK_BUFFER_MAX)
 867     {
 868         FIXME("The application requested %u back buffers, this is not supported.\n",
 869                 present_parameters->BackBufferCount);
 870         return WINED3DERR_INVALIDCALL;
 871     }
 872
 873     if (present_parameters->BackBufferCount > 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 SURFACE_GDI:
 882             swapchain->swapchain_ops = &swapchain_gdi_ops;
 883             break;
 884
 885         case SURFACE_OPENGL:
 886             swapchain->swapchain_ops = &swapchain_gl_ops;
 887             break;
 888
 889         case SURFACE_UNKNOWN:
 890             FIXME("Caller tried to create a SURFACE_UNKNOWN swapchain.\n");
 891             return WINED3DERR_INVALIDCALL;
 892     }
 893
 894     window = present_parameters->hDeviceWindow ? present_parameters->hDeviceWindow : device->createParms.hFocusWindow;
 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;
 907     format = wined3d_get_format(&adapter->gl_info, mode.Format);
 908
 909     GetClientRect(window, &client_rect);
 910     if (present_parameters->Windowed
 911             && (!present_parameters->BackBufferWidth || !present_parameters->BackBufferHeight
 912             || present_parameters->BackBufferFormat == WINED3DFMT_UNKNOWN))
 913     {
 914
 915         if (!present_parameters->BackBufferWidth)
 916         {
 917             present_parameters->BackBufferWidth = client_rect.right;
 918             TRACE("Updating width to %u.\n", present_parameters->BackBufferWidth);
 919         }
 920
 921         if (!present_parameters->BackBufferHeight)
 922         {
 923             present_parameters->BackBufferHeight = client_rect.bottom;
 924             TRACE("Updating height to %u.\n", present_parameters->BackBufferHeight);
 925         }
 926
 927         if (present_parameters->BackBufferFormat == WINED3DFMT_UNKNOWN)
 928         {
 929             present_parameters->BackBufferFormat = swapchain->orig_fmt;
 930             TRACE("Updating format to %s.\n", debug_d3dformat(swapchain->orig_fmt));
 931         }
 932     }
 933     swapchain->presentParms = *present_parameters;
 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->presentParms.BackBufferWidth, swapchain->presentParms.BackBufferHeight,
 939             swapchain->presentParms.BackBufferFormat, swapchain->presentParms.MultiSampleType,
 940             swapchain->presentParms.MultiSampleQuality, 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 == SURFACE_OPENGL)
 950     {
 951         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 952     }
 953
 954     /* MSDN says we're only allowed a single fullscreen swapchain per device,
 955      * so we should really check to see if there is a fullscreen swapchain
 956      * already. Does a single head count as full screen? */
 957
 958     if (!present_parameters->Windowed)
 959     {
 960         WINED3DDISPLAYMODE mode;
 961
 962         /* Change the display settings */
 963         mode.Width = present_parameters->BackBufferWidth;
 964         mode.Height = present_parameters->BackBufferHeight;
 965         mode.Format = present_parameters->BackBufferFormat;
 966         mode.RefreshRate = present_parameters->FullScreen_RefreshRateInHz;
 967
 968         hr = wined3d_device_set_display_mode(device, 0, &mode);
 969         if (FAILED(hr))
 970         {
 971             WARN("Failed to set display mode, hr %#x.\n", hr);
 972             goto err;
 973         }
 974         displaymode_set = TRUE;
 975     }
 976
 977     if (surface_type == SURFACE_OPENGL)
 978     {
 979         static const enum wined3d_format_id formats[] =
 980         {
 981             WINED3DFMT_D24_UNORM_S8_UINT,
 982             WINED3DFMT_D32_UNORM,
 983             WINED3DFMT_R24_UNORM_X8_TYPELESS,
 984             WINED3DFMT_D16_UNORM,
 985             WINED3DFMT_S1_UINT_D15_UNORM
 986         };
 987
 988         const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 989
 990         swapchain->context = HeapAlloc(GetProcessHeap(), 0, sizeof(swapchain->context));
 991         if (!swapchain->context)
 992         {
 993             ERR("Failed to create the context array.\n");
 994             hr = E_OUTOFMEMORY;
 995             goto err;
 996         }
 997         swapchain->num_contexts = 1;
 998
 999         /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
1000          * You are able to add a depth + stencil surface at a later stage when you need it.
1001          * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
1002          * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
1003          * context, need torecreate shaders, textures and other resources.
1004          *
1005          * The context manager already takes care of the state problem and for the other tasks code from Reset
1006          * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
1007          * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
1008          * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
1009          * issue needs to be fixed. */
1010         for (i = 0; i < (sizeof(formats) / sizeof(*formats)); i++)
1011         {
1012             swapchain->ds_format = wined3d_get_format(gl_info, formats[i]);
1013             swapchain->context[0] = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format);
1014             if (swapchain->context[0]) break;
1015             TRACE("Depth stencil format %s is not supported, trying next format\n",
1016                   debug_d3dformat(formats[i]));
1017         }
1018
1019         if (!swapchain->context[0])
1020         {
1021             WARN("Failed to create context.\n");
1022             hr = WINED3DERR_NOTAVAILABLE;
1023             goto err;
1024         }
1025
1026         if (!present_parameters->EnableAutoDepthStencil
1027                 || swapchain->presentParms.AutoDepthStencilFormat != swapchain->ds_format->id)
1028         {
1029             FIXME("Add OpenGL context recreation support to context_validate_onscreen_formats\n");
1030         }
1031         context_release(swapchain->context[0]);
1032     }
1033
1034     if (swapchain->presentParms.BackBufferCount > 0)
1035     {
1036         swapchain->back_buffers = HeapAlloc(GetProcessHeap(), 0,
1037                 sizeof(*swapchain->back_buffers) * swapchain->presentParms.BackBufferCount);
1038         if (!swapchain->back_buffers)
1039         {
1040             ERR("Failed to allocate backbuffer array memory.\n");
1041             hr = E_OUTOFMEMORY;
1042             goto err;
1043         }
1044
1045         for (i = 0; i < swapchain->presentParms.BackBufferCount; ++i)
1046         {
1047             TRACE("Creating back buffer %u.\n", i);
1048             hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
1049                     swapchain->presentParms.BackBufferWidth, swapchain->presentParms.BackBufferHeight,
1050                     swapchain->presentParms.BackBufferFormat, swapchain->presentParms.MultiSampleType,
1051                     swapchain->presentParms.MultiSampleQuality, TRUE /* Lockable */,
1052                     &swapchain->back_buffers[i]);
1053             if (FAILED(hr))
1054             {
1055                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
1056                 goto err;
1057             }
1058
1059             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
1060         }
1061     }
1062
1063     /* Swapchains share the depth/stencil buffer, so only create a single depthstencil surface. */
1064     if (present_parameters->EnableAutoDepthStencil && surface_type == SURFACE_OPENGL)
1065     {
1066         TRACE("Creating depth/stencil buffer.\n");
1067         if (!device->auto_depth_stencil)
1068         {
1069             hr = device->device_parent->ops->create_depth_stencil(device->device_parent,
1070                     swapchain->presentParms.BackBufferWidth, swapchain->presentParms.BackBufferHeight,
1071                     swapchain->presentParms.AutoDepthStencilFormat, swapchain->presentParms.MultiSampleType,
1072                     swapchain->presentParms.MultiSampleQuality, FALSE /* FIXME: Discard */,
1073                     &device->auto_depth_stencil);
1074             if (FAILED(hr))
1075             {
1076                 WARN("Failed to create the auto depth stencil, hr %#x.\n", hr);
1077                 goto err;
1078             }
1079
1080             surface_set_container(device->auto_depth_stencil, WINED3D_CONTAINER_NONE, NULL);
1081         }
1082     }
1083
1084     wined3d_swapchain_get_gamma_ramp(swapchain, &swapchain->orig_gamma);
1085
1086     return WINED3D_OK;
1087
1088 err:
1089     if (displaymode_set)
1090     {
1091         DEVMODEW devmode;
1092
1093         ClipCursor(NULL);
1094
1095         /* Change the display settings */
1096         memset(&devmode, 0, sizeof(devmode));
1097         devmode.dmSize = sizeof(devmode);
1098         devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
1099         devmode.dmBitsPerPel = format->byte_count * CHAR_BIT;
1100         devmode.dmPelsWidth = swapchain->orig_width;
1101         devmode.dmPelsHeight = swapchain->orig_height;
1102         ChangeDisplaySettingsExW(adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);
1103     }
1104
1105     if (swapchain->back_buffers)
1106     {
1107         for (i = 0; i < swapchain->presentParms.BackBufferCount; ++i)
1108         {
1109             if (swapchain->back_buffers[i])
1110             {
1111                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
1112                 wined3d_surface_decref(swapchain->back_buffers[i]);
1113             }
1114         }
1115         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
1116     }
1117
1118     if (swapchain->context)
1119     {
1120         if (swapchain->context[0])
1121         {
1122             context_release(swapchain->context[0]);
1123             context_destroy(device, swapchain->context[0]);
1124             swapchain->num_contexts = 0;
1125         }
1126         HeapFree(GetProcessHeap(), 0, swapchain->context);
1127     }
1128
1129     if (swapchain->front_buffer)
1130     {
1131         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
1132         wined3d_surface_decref(swapchain->front_buffer);
1133     }
1134
1135     return hr;
1136 }
1137
1138 /* Do not call while under the GL lock. */
1139 HRESULT CDECL wined3d_swapchain_create(struct wined3d_device *device,
1140         WINED3DPRESENT_PARAMETERS *present_parameters, WINED3DSURFTYPE surface_type,
1141         void *parent, const struct wined3d_parent_ops *parent_ops,
1142         struct wined3d_swapchain **swapchain)
1143 {
1144     struct wined3d_swapchain *object;
1145     HRESULT hr;
1146
1147     TRACE("device %p, present_parameters %p, swapchain %p, parent %p, surface_type %#x.\n",
1148             device, present_parameters, swapchain, parent, surface_type);
1149
1150     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
1151     if (!object)
1152     {
1153         ERR("Failed to allocate swapchain memory.\n");
1154         return E_OUTOFMEMORY;
1155     }
1156
1157     hr = swapchain_init(object, surface_type, device, present_parameters, parent, parent_ops);
1158     if (FAILED(hr))
1159     {
1160         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
1161         HeapFree(GetProcessHeap(), 0, object);
1162         return hr;
1163     }
1164
1165     TRACE("Created swapchain %p.\n", object);
1166     *swapchain = object;
1167
1168     return WINED3D_OK;
1169 }
1170
1171 /* Do not call while under the GL lock. */
1172 static struct wined3d_context *swapchain_create_context(struct wined3d_swapchain *swapchain)
1173 {
1174     struct wined3d_context **newArray;
1175     struct wined3d_context *ctx;
1176
1177     TRACE("Creating a new context for swapchain %p, thread %u.\n", swapchain, GetCurrentThreadId());
1178
1179     if (!(ctx = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format)))
1180     {
1181         ERR("Failed to create a new context for the swapchain\n");
1182         return NULL;
1183     }
1184     context_release(ctx);
1185
1186     newArray = HeapAlloc(GetProcessHeap(), 0, sizeof(*newArray) * (swapchain->num_contexts + 1));
1187     if(!newArray) {
1188         ERR("Out of memory when trying to allocate a new context array\n");
1189         context_destroy(swapchain->device, ctx);
1190         return NULL;
1191     }
1192     memcpy(newArray, swapchain->context, sizeof(*newArray) * swapchain->num_contexts);
1193     HeapFree(GetProcessHeap(), 0, swapchain->context);
1194     newArray[swapchain->num_contexts] = ctx;
1195     swapchain->context = newArray;
1196     swapchain->num_contexts++;
1197
1198     TRACE("Returning context %p\n", ctx);
1199     return ctx;
1200 }
1201
1202 void swapchain_destroy_contexts(struct wined3d_swapchain *swapchain)
1203 {
1204     unsigned int i;
1205
1206     for (i = 0; i < swapchain->num_contexts; ++i)
1207     {
1208         context_destroy(swapchain->device, swapchain->context[i]);
1209     }
1210     swapchain->num_contexts = 0;
1211 }
1212
1213 struct wined3d_context *swapchain_get_context(struct wined3d_swapchain *swapchain)
1214 {
1215     DWORD tid = GetCurrentThreadId();
1216     unsigned int i;
1217
1218     for (i = 0; i < swapchain->num_contexts; ++i)
1219     {
1220         if (swapchain->context[i]->tid == tid)
1221             return swapchain->context[i];
1222     }
1223
1224     /* Create a new context for the thread */
1225     return swapchain_create_context(swapchain);
1226 }
1227
1228 void get_drawable_size_swapchain(const struct wined3d_context *context, UINT *width, UINT *height)
1229 {
1230     /* The drawable size of an onscreen drawable is the surface size.
1231      * (Actually: The window size, but the surface is created in window size) */
1232     *width = context->current_rt->resource.width;
1233     *height = context->current_rt->resource.height;
1234 }
1235
1236 HDC swapchain_get_backup_dc(struct wined3d_swapchain *swapchain)
1237 {
1238     if (!swapchain->backup_dc)
1239     {
1240         TRACE("Creating the backup window for swapchain %p.\n", swapchain);
1241
1242         if (!(swapchain->backup_wnd = CreateWindowA(WINED3D_OPENGL_WINDOW_CLASS_NAME, "WineD3D fake window",
1243                 WS_OVERLAPPEDWINDOW, 10, 10, 10, 10, NULL, NULL, NULL, NULL)))
1244         {
1245             ERR("Failed to create a window.\n");
1246             return NULL;
1247         }
1248
1249         if (!(swapchain->backup_dc = GetDC(swapchain->backup_wnd)))
1250         {
1251             ERR("Failed to get a DC.\n");
1252             DestroyWindow(swapchain->backup_wnd);
1253             swapchain->backup_wnd = NULL;
1254             return NULL;
1255         }
1256     }
1257
1258     return swapchain->backup_dc;
1259 }
1260
1261 void swapchain_update_draw_bindings(struct wined3d_swapchain *swapchain)
1262 {
1263     UINT i;
1264
1265     surface_update_draw_binding(swapchain->front_buffer);
1266
1267     for (i = 0; i < swapchain->presentParms.BackBufferCount; ++i)
1268     {
1269         surface_update_draw_binding(swapchain->back_buffers[i]);
1270     }
1271 }