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 "wine/port.h"
  25 #include "wined3d_private.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  28 WINE_DECLARE_DEBUG_CHANNEL(fps);
  29
  30 /* Do not call while under the GL lock. */
  31 static void swapchain_cleanup(struct wined3d_swapchain *swapchain)
  32 {
  33     struct wined3d_display_mode mode;
  34     HRESULT hr;
  35     UINT i;
  36
  37     TRACE("Destroying swapchain %p.\n", swapchain);
  38
  39     wined3d_swapchain_set_gamma_ramp(swapchain, 0, &swapchain->orig_gamma);
  40
  41     /* Release the swapchain's draw buffers. Make sure swapchain->back_buffers[0]
  42      * is the last buffer to be destroyed, FindContext() depends on that. */
  43     if (swapchain->front_buffer)
  44     {
  45         if (swapchain->front_buffer->container.type == WINED3D_CONTAINER_SWAPCHAIN)
  46             surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
  47         if (wined3d_surface_decref(swapchain->front_buffer))
  48             WARN("Something's still holding the front buffer (%p).\n", swapchain->front_buffer);
  49         swapchain->front_buffer = NULL;
  50     }
  51
  52     if (swapchain->back_buffers)
  53     {
  54         i = swapchain->desc.backbuffer_count;
  55
  56         while (i--)
  57         {
  58             if (swapchain->back_buffers[i]->container.type == WINED3D_CONTAINER_SWAPCHAIN)
  59                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
  60             if (wined3d_surface_decref(swapchain->back_buffers[i]))
  61                 WARN("Something's still holding back buffer %u (%p).\n", i, swapchain->back_buffers[i]);
  62         }
  63         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
  64         swapchain->back_buffers = NULL;
  65     }
  66
  67     for (i = 0; i < swapchain->num_contexts; ++i)
  68     {
  69         context_destroy(swapchain->device, swapchain->context[i]);
  70     }
  71     HeapFree(GetProcessHeap(), 0, swapchain->context);
  72
  73     /* Restore the screen resolution if we rendered in fullscreen.
  74      * This will restore the screen resolution to what it was before creating
  75      * the swapchain. In case of d3d8 and d3d9 this will be the original
  76      * desktop resolution. In case of d3d7 this will be a NOP because ddraw
  77      * sets the resolution before starting up Direct3D, thus orig_width and
  78      * orig_height will be equal to the modes in the presentation params. */
  79     if (!swapchain->desc.windowed && swapchain->desc.auto_restore_display_mode)
  80     {
  81         mode.width = swapchain->orig_width;
  82         mode.height = swapchain->orig_height;
  83         mode.refresh_rate = 0;
  84         mode.format_id = swapchain->orig_fmt;
  85         mode.scanline_ordering = WINED3D_SCANLINE_ORDERING_UNKNOWN;
  86         if (FAILED(hr = wined3d_set_adapter_display_mode(swapchain->device->wined3d,
  87                 swapchain->device->adapter->ordinal, &mode)))
  88             ERR("Failed to restore display mode, hr %#x.\n", hr);
  89     }
  90
  91     if (swapchain->backup_dc)
  92     {
  93         TRACE("Destroying backup wined3d window %p, dc %p.\n", swapchain->backup_wnd, swapchain->backup_dc);
  94
  95         ReleaseDC(swapchain->backup_wnd, swapchain->backup_dc);
  96         DestroyWindow(swapchain->backup_wnd);
  97     }
  98 }
  99
 100 ULONG CDECL wined3d_swapchain_incref(struct wined3d_swapchain *swapchain)
 101 {
 102     ULONG refcount = InterlockedIncrement(&swapchain->ref);
 103
 104     TRACE("%p increasing refcount to %u.\n", swapchain, refcount);
 105
 106     return refcount;
 107 }
 108
 109 /* Do not call while under the GL lock. */
 110 ULONG CDECL wined3d_swapchain_decref(struct wined3d_swapchain *swapchain)
 111 {
 112     ULONG refcount = InterlockedDecrement(&swapchain->ref);
 113
 114     TRACE("%p decreasing refcount to %u.\n", swapchain, refcount);
 115
 116     if (!refcount)
 117     {
 118         swapchain_cleanup(swapchain);
 119         swapchain->parent_ops->wined3d_object_destroyed(swapchain->parent);
 120         HeapFree(GetProcessHeap(), 0, swapchain);
 121     }
 122
 123     return refcount;
 124 }
 125
 126 void * CDECL wined3d_swapchain_get_parent(const struct wined3d_swapchain *swapchain)
 127 {
 128     TRACE("swapchain %p.\n", swapchain);
 129
 130     return swapchain->parent;
 131 }
 132
 133 void CDECL wined3d_swapchain_set_window(struct wined3d_swapchain *swapchain, HWND window)
 134 {
 135     if (!window)
 136         window = swapchain->device_window;
 137     if (window == swapchain->win_handle)
 138         return;
 139
 140     TRACE("Setting swapchain %p window from %p to %p.\n",
 141             swapchain, swapchain->win_handle, window);
 142     swapchain->win_handle = window;
 143 }
 144
 145 HRESULT CDECL wined3d_swapchain_present(struct wined3d_swapchain *swapchain,
 146         const RECT *src_rect, const RECT *dst_rect, HWND dst_window_override,
 147         const RGNDATA *dirty_region, DWORD flags)
 148 {
 149     TRACE("swapchain %p, src_rect %s, dst_rect %s, dst_window_override %p, dirty_region %p, flags %#x.\n",
 150             swapchain, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect),
 151             dst_window_override, dirty_region, flags);
 152
 153     if (flags)
 154         FIXME("Ignoring flags %#x.\n", flags);
 155
 156     if (!swapchain->back_buffers)
 157     {
 158         WARN("Swapchain doesn't have a backbuffer, returning WINED3DERR_INVALIDCALL\n");
 159         return WINED3DERR_INVALIDCALL;
 160     }
 161
 162     wined3d_swapchain_set_window(swapchain, dst_window_override);
 163
 164     swapchain->swapchain_ops->swapchain_present(swapchain, src_rect, dst_rect, dirty_region, flags);
 165
 166     return WINED3D_OK;
 167 }
 168
 169 HRESULT CDECL wined3d_swapchain_get_front_buffer_data(const struct wined3d_swapchain *swapchain,
 170         struct wined3d_surface *dst_surface)
 171 {
 172     struct wined3d_surface *src_surface;
 173     RECT src_rect, dst_rect;
 174
 175     TRACE("swapchain %p, dst_surface %p.\n", swapchain, dst_surface);
 176
 177     src_surface = swapchain->front_buffer;
 178     SetRect(&src_rect, 0, 0, src_surface->resource.width, src_surface->resource.height);
 179     dst_rect = src_rect;
 180
 181     if (swapchain->desc.windowed)
 182     {
 183         MapWindowPoints(swapchain->win_handle, NULL, (POINT *)&dst_rect, 2);
 184         FIXME("Using destination rect %s in windowed mode, this is likely wrong.\n",
 185                 wine_dbgstr_rect(&dst_rect));
 186     }
 187
 188     return wined3d_surface_blt(dst_surface, &dst_rect, src_surface, &src_rect, 0, NULL, WINED3D_TEXF_POINT);
 189 }
 190
 191 struct wined3d_surface * CDECL wined3d_swapchain_get_back_buffer(const struct wined3d_swapchain *swapchain,
 192         UINT back_buffer_idx, enum wined3d_backbuffer_type type)
 193 {
 194     TRACE("swapchain %p, back_buffer_idx %u, type %#x.\n",
 195             swapchain, back_buffer_idx, type);
 196
 197     /* Return invalid if there is no backbuffer array, otherwise it will
 198      * crash when ddraw is used (there swapchain->back_buffers is always
 199      * NULL). We need this because this function is called from
 200      * stateblock_init_default_state() to get the default scissorrect
 201      * dimensions. */
 202     if (!swapchain->back_buffers || back_buffer_idx >= swapchain->desc.backbuffer_count)
 203     {
 204         WARN("Invalid back buffer index.\n");
 205         /* Native d3d9 doesn't set NULL here, just as wine's d3d9. But set it
 206          * here in wined3d to avoid problems in other libs. */
 207         return NULL;
 208     }
 209
 210     TRACE("Returning back buffer %p.\n", swapchain->back_buffers[back_buffer_idx]);
 211
 212     return swapchain->back_buffers[back_buffer_idx];
 213 }
 214
 215 HRESULT CDECL wined3d_swapchain_get_raster_status(const struct wined3d_swapchain *swapchain,
 216         struct wined3d_raster_status *raster_status)
 217 {
 218     TRACE("swapchain %p, raster_status %p.\n", swapchain, raster_status);
 219
 220     return wined3d_get_adapter_raster_status(swapchain->device->wined3d,
 221             swapchain->device->adapter->ordinal, raster_status);
 222 }
 223
 224 HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain,
 225         struct wined3d_display_mode *mode, enum wined3d_display_rotation *rotation)
 226 {
 227     HRESULT hr;
 228
 229     TRACE("swapchain %p, mode %p, rotation %p.\n", swapchain, mode, rotation);
 230
 231     hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d,
 232             swapchain->device->adapter->ordinal, mode, rotation);
 233
 234     TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
 235             mode->width, mode->height, mode->refresh_rate, debug_d3dformat(mode->format_id));
 236
 237     return hr;
 238 }
 239
 240 struct wined3d_device * CDECL wined3d_swapchain_get_device(const struct wined3d_swapchain *swapchain)
 241 {
 242     TRACE("swapchain %p.\n", swapchain);
 243
 244     return swapchain->device;
 245 }
 246
 247 void CDECL wined3d_swapchain_get_desc(const struct wined3d_swapchain *swapchain,
 248         struct wined3d_swapchain_desc *desc)
 249 {
 250     TRACE("swapchain %p, desc %p.\n", swapchain, desc);
 251
 252     *desc = swapchain->desc;
 253 }
 254
 255 HRESULT CDECL wined3d_swapchain_set_gamma_ramp(const struct wined3d_swapchain *swapchain,
 256         DWORD flags, const struct wined3d_gamma_ramp *ramp)
 257 {
 258     HDC dc;
 259
 260     TRACE("swapchain %p, flags %#x, ramp %p.\n", swapchain, flags, ramp);
 261
 262     if (flags)
 263         FIXME("Ignoring flags %#x.\n", flags);
 264
 265     dc = GetDC(swapchain->device_window);
 266     SetDeviceGammaRamp(dc, (void *)ramp);
 267     ReleaseDC(swapchain->device_window, dc);
 268
 269     return WINED3D_OK;
 270 }
 271
 272 HRESULT CDECL wined3d_swapchain_get_gamma_ramp(const struct wined3d_swapchain *swapchain,
 273         struct wined3d_gamma_ramp *ramp)
 274 {
 275     HDC dc;
 276
 277     TRACE("swapchain %p, ramp %p.\n", swapchain, ramp);
 278
 279     dc = GetDC(swapchain->device_window);
 280     GetDeviceGammaRamp(dc, ramp);
 281     ReleaseDC(swapchain->device_window, dc);
 282
 283     return WINED3D_OK;
 284 }
 285
 286 /* A GL context is provided by the caller */
 287 static void swapchain_blit(const struct wined3d_swapchain *swapchain,
 288         struct wined3d_context *context, const RECT *src_rect, const RECT *dst_rect)
 289 {
 290     struct wined3d_surface *backbuffer = swapchain->back_buffers[0];
 291     UINT src_w = src_rect->right - src_rect->left;
 292     UINT src_h = src_rect->bottom - src_rect->top;
 293     GLenum gl_filter;
 294     const struct wined3d_gl_info *gl_info = context->gl_info;
 295     RECT win_rect;
 296     UINT win_h;
 297
 298     TRACE("swapchain %p, context %p, src_rect %s, dst_rect %s.\n",
 299             swapchain, context, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect));
 300
 301     if (src_w == dst_rect->right - dst_rect->left && src_h == dst_rect->bottom - dst_rect->top)
 302         gl_filter = GL_NEAREST;
 303     else
 304         gl_filter = GL_LINEAR;
 305
 306     GetClientRect(swapchain->win_handle, &win_rect);
 307     win_h = win_rect.bottom - win_rect.top;
 308
 309     if (gl_info->fbo_ops.glBlitFramebuffer && is_identity_fixup(backbuffer->resource.format->color_fixup))
 310     {
 311         DWORD location = SFLAG_INTEXTURE;
 312
 313         if (backbuffer->resource.multisample_type)
 314         {
 315             location = SFLAG_INRB_RESOLVED;
 316             surface_load_location(backbuffer, location, NULL);
 317         }
 318
 319         ENTER_GL();
 320         context_apply_fbo_state_blit(context, GL_READ_FRAMEBUFFER, backbuffer, NULL, location);
 321         gl_info->gl_ops.gl.p_glReadBuffer(GL_COLOR_ATTACHMENT0);
 322         context_check_fbo_status(context, GL_READ_FRAMEBUFFER);
 323
 324         context_apply_fbo_state_blit(context, GL_DRAW_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 325         context_set_draw_buffer(context, GL_BACK);
 326         context_invalidate_state(context, STATE_FRAMEBUFFER);
 327
 328         gl_info->gl_ops.gl.p_glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 329         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
 330         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
 331         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
 332         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
 333
 334         gl_info->gl_ops.gl.p_glDisable(GL_SCISSOR_TEST);
 335         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
 336
 337         /* Note that the texture is upside down */
 338         gl_info->fbo_ops.glBlitFramebuffer(src_rect->left, src_rect->top, src_rect->right, src_rect->bottom,
 339                 dst_rect->left, win_h - dst_rect->top, dst_rect->right, win_h - dst_rect->bottom,
 340                 GL_COLOR_BUFFER_BIT, gl_filter);
 341         checkGLcall("Swapchain present blit(EXT_framebuffer_blit)\n");
 342         LEAVE_GL();
 343     }
 344     else
 345     {
 346         struct wined3d_device *device = swapchain->device;
 347         struct wined3d_context *context2;
 348         float tex_left = src_rect->left;
 349         float tex_top = src_rect->top;
 350         float tex_right = src_rect->right;
 351         float tex_bottom = src_rect->bottom;
 352
 353         context2 = context_acquire(device, swapchain->back_buffers[0]);
 354         context_apply_blit_state(context2, device);
 355
 356         if (backbuffer->flags & SFLAG_NORMCOORD)
 357         {
 358             tex_left /= src_w;
 359             tex_right /= src_w;
 360             tex_top /= src_h;
 361             tex_bottom /= src_h;
 362         }
 363
 364         if (is_complex_fixup(backbuffer->resource.format->color_fixup))
 365             gl_filter = GL_NEAREST;
 366
 367         ENTER_GL();
 368         context_apply_fbo_state_blit(context2, GL_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 369         context_bind_texture(context2, backbuffer->texture_target, backbuffer->texture_name);
 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         gl_info->gl_ops.gl.p_glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MIN_FILTER, gl_filter);
 375         gl_info->gl_ops.gl.p_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         gl_info->gl_ops.gl.p_glPushAttrib(GL_VIEWPORT_BIT);
 388         gl_info->gl_ops.gl.p_glViewport(dst_rect->left, win_h - dst_rect->bottom,
 389                 dst_rect->right, win_h - dst_rect->top);
 390         gl_info->gl_ops.gl.p_glMatrixMode(GL_PROJECTION);
 391         gl_info->gl_ops.gl.p_glPushMatrix();
 392         gl_info->gl_ops.gl.p_glLoadIdentity();
 393
 394         gl_info->gl_ops.gl.p_glBegin(GL_QUADS);
 395             /* bottom left */
 396             gl_info->gl_ops.gl.p_glTexCoord2f(tex_left, tex_bottom);
 397             gl_info->gl_ops.gl.p_glVertex2i(-1, -1);
 398
 399             /* top left */
 400             gl_info->gl_ops.gl.p_glTexCoord2f(tex_left, tex_top);
 401             gl_info->gl_ops.gl.p_glVertex2i(-1, 1);
 402
 403             /* top right */
 404             gl_info->gl_ops.gl.p_glTexCoord2f(tex_right, tex_top);
 405             gl_info->gl_ops.gl.p_glVertex2i(1, 1);
 406
 407             /* bottom right */
 408             gl_info->gl_ops.gl.p_glTexCoord2f(tex_right, tex_bottom);
 409             gl_info->gl_ops.gl.p_glVertex2i(1, -1);
 410         gl_info->gl_ops.gl.p_glEnd();
 411
 412         gl_info->gl_ops.gl.p_glPopMatrix();
 413         gl_info->gl_ops.gl.p_glPopAttrib();
 414
 415         device->blitter->unset_shader(context->gl_info);
 416         checkGLcall("Swapchain present blit(manual)\n");
 417         LEAVE_GL();
 418
 419         context_release(context2);
 420     }
 421 }
 422
 423 static void swapchain_gl_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 424         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 425 {
 426     struct wined3d_surface *back_buffer = swapchain->back_buffers[0];
 427     const struct wined3d_fb_state *fb = &swapchain->device->fb;
 428     const struct wined3d_gl_info *gl_info;
 429     struct wined3d_context *context;
 430     RECT src_rect, dst_rect;
 431     BOOL render_to_fbo;
 432
 433     context = context_acquire(swapchain->device, back_buffer);
 434     if (!context->valid)
 435     {
 436         context_release(context);
 437         WARN("Invalid context, skipping present.\n");
 438         return;
 439     }
 440
 441     gl_info = context->gl_info;
 442
 443     /* Render the cursor onto the back buffer, using our nifty directdraw blitting code :-) */
 444     if (swapchain->device->bCursorVisible &&
 445         swapchain->device->cursorTexture &&
 446         !swapchain->device->hardwareCursor)
 447     {
 448         struct wined3d_surface cursor;
 449         RECT destRect =
 450         {
 451             swapchain->device->xScreenSpace - swapchain->device->xHotSpot,
 452             swapchain->device->yScreenSpace - swapchain->device->yHotSpot,
 453             swapchain->device->xScreenSpace + swapchain->device->cursorWidth - swapchain->device->xHotSpot,
 454             swapchain->device->yScreenSpace + swapchain->device->cursorHeight - swapchain->device->yHotSpot,
 455         };
 456         TRACE("Rendering the cursor. Creating fake surface at %p\n", &cursor);
 457         /* Build a fake surface to call the Blitting code. It is not possible to use the interface passed by
 458          * the application because we are only supposed to copy the information out. Using a fake surface
 459          * allows us to use the Blitting engine and avoid copying the whole texture -> render target blitting code.
 460          */
 461         memset(&cursor, 0, sizeof(cursor));
 462         cursor.resource.ref = 1;
 463         cursor.resource.device = swapchain->device;
 464         cursor.resource.pool = WINED3D_POOL_SCRATCH;
 465         cursor.resource.format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
 466         cursor.resource.type = WINED3D_RTYPE_SURFACE;
 467         cursor.texture_name = swapchain->device->cursorTexture;
 468         cursor.texture_target = GL_TEXTURE_2D;
 469         cursor.texture_level = 0;
 470         cursor.resource.width = swapchain->device->cursorWidth;
 471         cursor.resource.height = swapchain->device->cursorHeight;
 472         /* The cursor must have pow2 sizes */
 473         cursor.pow2Width = cursor.resource.width;
 474         cursor.pow2Height = cursor.resource.height;
 475         /* The surface is in the texture */
 476         cursor.flags |= SFLAG_INTEXTURE;
 477         /* DDBLT_KEYSRC will cause BltOverride to enable the alpha test with GL_NOTEQUAL, 0.0,
 478          * which is exactly what we want :-)
 479          */
 480         if (swapchain->desc.windowed)
 481             MapWindowPoints(NULL, swapchain->win_handle, (POINT *)&destRect, 2);
 482         wined3d_surface_blt(back_buffer, &destRect, &cursor, NULL, WINEDDBLT_KEYSRC,
 483                 NULL, WINED3D_TEXF_POINT);
 484     }
 485
 486     if (swapchain->device->logo_surface)
 487     {
 488         struct wined3d_surface *src_surface = swapchain->device->logo_surface;
 489         RECT rect = {0, 0, src_surface->resource.width, src_surface->resource.height};
 490
 491         /* Blit the logo into the upper left corner of the drawable. */
 492         wined3d_surface_blt(back_buffer, &rect, src_surface, &rect, WINEDDBLT_KEYSRC,
 493                 NULL, WINED3D_TEXF_POINT);
 494     }
 495
 496     TRACE("Presenting HDC %p.\n", context->hdc);
 497
 498     render_to_fbo = swapchain->render_to_fbo;
 499
 500     if (src_rect_in)
 501     {
 502         src_rect = *src_rect_in;
 503         if (!render_to_fbo && (src_rect.left || src_rect.top
 504                 || src_rect.right != swapchain->desc.backbuffer_width
 505                 || src_rect.bottom != swapchain->desc.backbuffer_height))
 506         {
 507             render_to_fbo = TRUE;
 508         }
 509     }
 510     else
 511     {
 512         src_rect.left = 0;
 513         src_rect.top = 0;
 514         src_rect.right = swapchain->desc.backbuffer_width;
 515         src_rect.bottom = swapchain->desc.backbuffer_height;
 516     }
 517
 518     if (dst_rect_in)
 519         dst_rect = *dst_rect_in;
 520     else
 521         GetClientRect(swapchain->win_handle, &dst_rect);
 522
 523     if (!render_to_fbo && (dst_rect.left || dst_rect.top
 524             || dst_rect.right != swapchain->desc.backbuffer_width
 525             || dst_rect.bottom != swapchain->desc.backbuffer_height))
 526         render_to_fbo = TRUE;
 527
 528     /* Rendering to a window of different size, presenting partial rectangles,
 529      * or rendering to a different window needs help from FBO_blit or a textured
 530      * draw. Render the swapchain to a FBO in the future.
 531      *
 532      * Note that FBO_blit from the backbuffer to the frontbuffer cannot solve
 533      * all these issues - this fails if the window is smaller than the backbuffer.
 534      */
 535     if (!swapchain->render_to_fbo && render_to_fbo && wined3d_settings.offscreen_rendering_mode == ORM_FBO)
 536     {
 537         surface_load_location(back_buffer, SFLAG_INTEXTURE, NULL);
 538         surface_modify_location(back_buffer, SFLAG_INDRAWABLE, FALSE);
 539         swapchain->render_to_fbo = TRUE;
 540         swapchain_update_draw_bindings(swapchain);
 541     }
 542     else
 543     {
 544         surface_load_location(back_buffer, back_buffer->draw_binding, NULL);
 545     }
 546
 547     if (swapchain->render_to_fbo)
 548     {
 549         /* This codepath should only be hit with the COPY swapeffect. Otherwise a backbuffer-
 550          * window size mismatch is impossible(fullscreen) and src and dst rectangles are
 551          * not allowed(they need the COPY swapeffect)
 552          *
 553          * The DISCARD swap effect is ok as well since any backbuffer content is allowed after
 554          * the swap. */
 555         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 556             FIXME("Render-to-fbo with WINED3D_SWAP_EFFECT_FLIP\n");
 557
 558         swapchain_blit(swapchain, context, &src_rect, &dst_rect);
 559     }
 560
 561     if (swapchain->num_contexts > 1)
 562         gl_info->gl_ops.gl.p_glFinish();
 563     SwapBuffers(context->hdc); /* TODO: cycle through the swapchain buffers */
 564
 565     TRACE("SwapBuffers called, Starting new frame\n");
 566     /* FPS support */
 567     if (TRACE_ON(fps))
 568     {
 569         DWORD time = GetTickCount();
 570         ++swapchain->frames;
 571
 572         /* every 1.5 seconds */
 573         if (time - swapchain->prev_time > 1500)
 574         {
 575             TRACE_(fps)("%p @ approx %.2ffps\n",
 576                     swapchain, 1000.0 * swapchain->frames / (time - swapchain->prev_time));
 577             swapchain->prev_time = time;
 578             swapchain->frames = 0;
 579         }
 580     }
 581
 582     /* This is disabled, but the code left in for debug purposes.
 583      *
 584      * Since we're allowed to modify the new back buffer on a D3DSWAPEFFECT_DISCARD flip,
 585      * we can clear it with some ugly color to make bad drawing visible and ease debugging.
 586      * The Debug runtime does the same on Windows. However, a few games do not redraw the
 587      * screen properly, like Max Payne 2, which leaves a few pixels undefined.
 588      *
 589      * Tests show that the content of the back buffer after a discard flip is indeed not
 590      * reliable, so no game can depend on the exact content. However, it resembles the
 591      * old contents in some way, for example by showing fragments at other locations. In
 592      * general, the color theme is still intact. So Max payne, which draws rather dark scenes
 593      * gets a dark background image. If we clear it with a bright ugly color, the game's
 594      * bug shows up much more than it does on Windows, and the players see single pixels
 595      * with wrong colors.
 596      * (The Max Payne bug has been confirmed on Windows with the debug runtime) */
 597     if (FALSE && swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_DISCARD)
 598     {
 599         static const struct wined3d_color cyan = {0.0f, 1.0f, 1.0f, 1.0f};
 600
 601         TRACE("Clearing the color buffer with cyan color\n");
 602
 603         wined3d_device_clear(swapchain->device, 0, NULL,
 604                 WINED3DCLEAR_TARGET, &cyan, 1.0f, 0);
 605     }
 606
 607     if (!swapchain->render_to_fbo && ((swapchain->front_buffer->flags & SFLAG_INSYSMEM)
 608             || (back_buffer->flags & SFLAG_INSYSMEM)))
 609     {
 610         /* Both memory copies of the surfaces are ok, flip them around too instead of dirtifying
 611          * Doesn't work with render_to_fbo because we're not flipping
 612          */
 613         struct wined3d_surface *front = swapchain->front_buffer;
 614
 615         if (front->resource.size == back_buffer->resource.size)
 616         {
 617             DWORD fbflags;
 618             flip_surface(front, back_buffer);
 619
 620             /* Tell the front buffer surface that is has been modified. However,
 621              * the other locations were preserved during that, so keep the flags.
 622              * This serves to update the emulated overlay, if any. */
 623             fbflags = front->flags;
 624             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 625             front->flags = fbflags;
 626         }
 627         else
 628         {
 629             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 630             surface_modify_location(back_buffer, SFLAG_INDRAWABLE, TRUE);
 631         }
 632     }
 633     else
 634     {
 635         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 636         /* If the swapeffect is DISCARD, the back buffer is undefined. That means the SYSMEM
 637          * and INTEXTURE copies can keep their old content if they have any defined content.
 638          * If the swapeffect is COPY, the content remains the same. If it is FLIP however,
 639          * the texture / sysmem copy needs to be reloaded from the drawable
 640          */
 641         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 642             surface_modify_location(back_buffer, back_buffer->draw_binding, TRUE);
 643     }
 644
 645     if (fb->depth_stencil)
 646     {
 647         if (swapchain->desc.flags & WINED3DPRESENTFLAG_DISCARD_DEPTHSTENCIL
 648                 || fb->depth_stencil->flags & SFLAG_DISCARD)
 649         {
 650             surface_modify_ds_location(fb->depth_stencil, SFLAG_DISCARDED,
 651                     fb->depth_stencil->resource.width,
 652                     fb->depth_stencil->resource.height);
 653             if (fb->depth_stencil == swapchain->device->onscreen_depth_stencil)
 654             {
 655                 wined3d_surface_decref(swapchain->device->onscreen_depth_stencil);
 656                 swapchain->device->onscreen_depth_stencil = NULL;
 657             }
 658         }
 659     }
 660
 661     context_release(context);
 662 }
 663
 664 static const struct wined3d_swapchain_ops swapchain_gl_ops =
 665 {
 666     swapchain_gl_present,
 667 };
 668
 669 /* Helper function that blits the front buffer contents to the target window. */
 670 void x11_copy_to_screen(const struct wined3d_swapchain *swapchain, const RECT *rect)
 671 {
 672     const struct wined3d_surface *front;
 673     POINT offset = {0, 0};
 674     HDC src_dc, dst_dc;
 675     RECT draw_rect;
 676     HWND window;
 677
 678     TRACE("swapchain %p, rect %s.\n", swapchain, wine_dbgstr_rect(rect));
 679
 680     front = swapchain->front_buffer;
 681     if (!(front->resource.usage & WINED3DUSAGE_RENDERTARGET))
 682         return;
 683
 684     if (front->resource.map_count)
 685         ERR("Trying to blit a mapped surface.\n");
 686
 687     TRACE("Copying surface %p to screen.\n", front);
 688
 689     src_dc = front->hDC;
 690     window = swapchain->win_handle;
 691     dst_dc = GetDCEx(window, 0, DCX_CLIPSIBLINGS | DCX_CACHE);
 692
 693     /* Front buffer coordinates are screen coordinates. Map them to the
 694      * destination window if not fullscreened. */
 695     if (swapchain->desc.windowed)
 696         ClientToScreen(window, &offset);
 697
 698     TRACE("offset %s.\n", wine_dbgstr_point(&offset));
 699
 700     draw_rect.left = 0;
 701     draw_rect.right = front->resource.width;
 702     draw_rect.top = 0;
 703     draw_rect.bottom = front->resource.height;
 704
 705     if (rect)
 706         IntersectRect(&draw_rect, &draw_rect, rect);
 707
 708     BitBlt(dst_dc, draw_rect.left - offset.x, draw_rect.top - offset.y,
 709             draw_rect.right - draw_rect.left, draw_rect.bottom - draw_rect.top,
 710             src_dc, draw_rect.left, draw_rect.top, SRCCOPY);
 711     ReleaseDC(window, dst_dc);
 712 }
 713
 714 static void swapchain_gdi_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 715         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 716 {
 717     struct wined3d_surface *front, *back;
 718
 719     front = swapchain->front_buffer;
 720     back = swapchain->back_buffers[0];
 721
 722     /* Flip the DC. */
 723     {
 724         HDC tmp;
 725         tmp = front->hDC;
 726         front->hDC = back->hDC;
 727         back->hDC = tmp;
 728     }
 729
 730     /* Flip the DIBsection. */
 731     {
 732         HBITMAP tmp;
 733         tmp = front->dib.DIBsection;
 734         front->dib.DIBsection = back->dib.DIBsection;
 735         back->dib.DIBsection = tmp;
 736     }
 737
 738     /* Flip the surface data. */
 739     {
 740         void *tmp;
 741
 742         tmp = front->dib.bitmap_data;
 743         front->dib.bitmap_data = back->dib.bitmap_data;
 744         back->dib.bitmap_data = tmp;
 745
 746         tmp = front->resource.allocatedMemory;
 747         front->resource.allocatedMemory = back->resource.allocatedMemory;
 748         back->resource.allocatedMemory = tmp;
 749
 750         if (front->resource.heapMemory)
 751             ERR("GDI Surface %p has heap memory allocated.\n", front);
 752
 753         if (back->resource.heapMemory)
 754             ERR("GDI Surface %p has heap memory allocated.\n", back);
 755     }
 756
 757     /* FPS support */
 758     if (TRACE_ON(fps))
 759     {
 760         static LONG prev_time, frames;
 761         DWORD time = GetTickCount();
 762
 763         ++frames;
 764
 765         /* every 1.5 seconds */
 766         if (time - prev_time > 1500)
 767         {
 768             TRACE_(fps)("@ approx %.2ffps\n", 1000.0 * frames / (time - prev_time));
 769             prev_time = time;
 770             frames = 0;
 771         }
 772     }
 773
 774     x11_copy_to_screen(swapchain, NULL);
 775 }
 776
 777 static const struct wined3d_swapchain_ops swapchain_gdi_ops =
 778 {
 779     swapchain_gdi_present,
 780 };
 781
 782 void swapchain_update_render_to_fbo(struct wined3d_swapchain *swapchain)
 783 {
 784     RECT client_rect;
 785
 786     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
 787         return;
 788
 789     if (!swapchain->desc.backbuffer_count)
 790     {
 791         TRACE("Single buffered rendering.\n");
 792         swapchain->render_to_fbo = FALSE;
 793         return;
 794     }
 795
 796     GetClientRect(swapchain->win_handle, &client_rect);
 797
 798     TRACE("Backbuffer %ux%u, window %ux%u.\n",
 799             swapchain->desc.backbuffer_width,
 800             swapchain->desc.backbuffer_height,
 801             client_rect.right, client_rect.bottom);
 802     TRACE("Multisample type %#x, quality %#x.\n",
 803             swapchain->desc.multisample_type,
 804             swapchain->desc.multisample_quality);
 805
 806     if (!wined3d_settings.always_offscreen && !swapchain->desc.multisample_type
 807             && swapchain->desc.backbuffer_width == client_rect.right
 808             && swapchain->desc.backbuffer_height == client_rect.bottom)
 809     {
 810         TRACE("Backbuffer dimensions match window dimensions, rendering onscreen.\n");
 811         swapchain->render_to_fbo = FALSE;
 812         return;
 813     }
 814
 815     TRACE("Rendering to FBO.\n");
 816     swapchain->render_to_fbo = TRUE;
 817 }
 818
 819 /* Do not call while under the GL lock. */
 820 static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, enum wined3d_surface_type surface_type,
 821         struct wined3d_device *device, struct wined3d_swapchain_desc *desc,
 822         void *parent, const struct wined3d_parent_ops *parent_ops)
 823 {
 824     const struct wined3d_adapter *adapter = device->adapter;
 825     const struct wined3d_format *format;
 826     struct wined3d_display_mode mode;
 827     BOOL displaymode_set = FALSE;
 828     RECT client_rect;
 829     HWND window;
 830     HRESULT hr;
 831     UINT i;
 832
 833     if (desc->backbuffer_count > WINED3DPRESENT_BACK_BUFFER_MAX)
 834     {
 835         FIXME("The application requested %u back buffers, this is not supported.\n",
 836                 desc->backbuffer_count);
 837         return WINED3DERR_INVALIDCALL;
 838     }
 839
 840     if (desc->backbuffer_count > 1)
 841     {
 842         FIXME("The application requested more than one back buffer, this is not properly supported.\n"
 843                 "Please configure the application to use double buffering (1 back buffer) if possible.\n");
 844     }
 845
 846     switch (surface_type)
 847     {
 848         case WINED3D_SURFACE_TYPE_GDI:
 849             swapchain->swapchain_ops = &swapchain_gdi_ops;
 850             break;
 851
 852         case WINED3D_SURFACE_TYPE_OPENGL:
 853             swapchain->swapchain_ops = &swapchain_gl_ops;
 854             break;
 855
 856         default:
 857             ERR("Invalid surface type %#x.\n", surface_type);
 858             return WINED3DERR_INVALIDCALL;
 859     }
 860
 861     window = desc->device_window ? desc->device_window : device->create_parms.focus_window;
 862
 863     swapchain->device = device;
 864     swapchain->parent = parent;
 865     swapchain->parent_ops = parent_ops;
 866     swapchain->ref = 1;
 867     swapchain->win_handle = window;
 868     swapchain->device_window = window;
 869
 870     wined3d_get_adapter_display_mode(device->wined3d, adapter->ordinal, &mode, NULL);
 871     swapchain->orig_width = mode.width;
 872     swapchain->orig_height = mode.height;
 873     swapchain->orig_fmt = mode.format_id;
 874     format = wined3d_get_format(&adapter->gl_info, mode.format_id);
 875
 876     GetClientRect(window, &client_rect);
 877     if (desc->windowed
 878             && (!desc->backbuffer_width || !desc->backbuffer_height
 879             || desc->backbuffer_format == WINED3DFMT_UNKNOWN))
 880     {
 881
 882         if (!desc->backbuffer_width)
 883         {
 884             desc->backbuffer_width = client_rect.right;
 885             TRACE("Updating width to %u.\n", desc->backbuffer_width);
 886         }
 887
 888         if (!desc->backbuffer_height)
 889         {
 890             desc->backbuffer_height = client_rect.bottom;
 891             TRACE("Updating height to %u.\n", desc->backbuffer_height);
 892         }
 893
 894         if (desc->backbuffer_format == WINED3DFMT_UNKNOWN)
 895         {
 896             desc->backbuffer_format = swapchain->orig_fmt;
 897             TRACE("Updating format to %s.\n", debug_d3dformat(swapchain->orig_fmt));
 898         }
 899     }
 900     swapchain->desc = *desc;
 901     swapchain_update_render_to_fbo(swapchain);
 902
 903     TRACE("Creating front buffer.\n");
 904     if (FAILED(hr = device->device_parent->ops->create_swapchain_surface(device->device_parent, parent,
 905             swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
 906             swapchain->desc.backbuffer_format, WINED3DUSAGE_RENDERTARGET,
 907             swapchain->desc.multisample_type, swapchain->desc.multisample_quality,
 908             &swapchain->front_buffer)))
 909     {
 910         WARN("Failed to create front buffer, hr %#x.\n", hr);
 911         goto err;
 912     }
 913
 914     if (swapchain->front_buffer->container.type == WINED3D_CONTAINER_NONE)
 915         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_SWAPCHAIN, swapchain);
 916     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 917         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 918
 919     /* MSDN says we're only allowed a single fullscreen swapchain per device,
 920      * so we should really check to see if there is a fullscreen swapchain
 921      * already. Does a single head count as full screen? */
 922
 923     if (!desc->windowed)
 924     {
 925         struct wined3d_display_mode mode;
 926
 927         /* Change the display settings */
 928         mode.width = desc->backbuffer_width;
 929         mode.height = desc->backbuffer_height;
 930         mode.format_id = desc->backbuffer_format;
 931         mode.refresh_rate = desc->refresh_rate;
 932         mode.scanline_ordering = WINED3D_SCANLINE_ORDERING_UNKNOWN;
 933
 934         if (FAILED(hr = wined3d_set_adapter_display_mode(device->wined3d, device->adapter->ordinal, &mode)))
 935         {
 936             WARN("Failed to set display mode, hr %#x.\n", hr);
 937             goto err;
 938         }
 939         displaymode_set = TRUE;
 940     }
 941
 942     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 943     {
 944         static const enum wined3d_format_id formats[] =
 945         {
 946             WINED3DFMT_D24_UNORM_S8_UINT,
 947             WINED3DFMT_D32_UNORM,
 948             WINED3DFMT_R24_UNORM_X8_TYPELESS,
 949             WINED3DFMT_D16_UNORM,
 950             WINED3DFMT_S1_UINT_D15_UNORM
 951         };
 952
 953         const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 954
 955         swapchain->context = HeapAlloc(GetProcessHeap(), 0, sizeof(*swapchain->context));
 956         if (!swapchain->context)
 957         {
 958             ERR("Failed to create the context array.\n");
 959             hr = E_OUTOFMEMORY;
 960             goto err;
 961         }
 962         swapchain->num_contexts = 1;
 963
 964         /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
 965          * You are able to add a depth + stencil surface at a later stage when you need it.
 966          * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
 967          * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
 968          * context, need torecreate shaders, textures and other resources.
 969          *
 970          * The context manager already takes care of the state problem and for the other tasks code from Reset
 971          * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
 972          * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
 973          * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
 974          * issue needs to be fixed. */
 975         for (i = 0; i < (sizeof(formats) / sizeof(*formats)); i++)
 976         {
 977             swapchain->ds_format = wined3d_get_format(gl_info, formats[i]);
 978             swapchain->context[0] = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format);
 979             if (swapchain->context[0]) break;
 980             TRACE("Depth stencil format %s is not supported, trying next format\n",
 981                   debug_d3dformat(formats[i]));
 982         }
 983
 984         if (!swapchain->context[0])
 985         {
 986             WARN("Failed to create context.\n");
 987             hr = WINED3DERR_NOTAVAILABLE;
 988             goto err;
 989         }
 990
 991         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
 992                 && (!desc->enable_auto_depth_stencil
 993                 || swapchain->desc.auto_depth_stencil_format != swapchain->ds_format->id))
 994         {
 995             FIXME("Add OpenGL context recreation support to context_validate_onscreen_formats\n");
 996         }
 997         context_release(swapchain->context[0]);
 998     }
 999
1000     if (swapchain->desc.backbuffer_count > 0)
1001     {
1002         swapchain->back_buffers = HeapAlloc(GetProcessHeap(), 0,
1003                 sizeof(*swapchain->back_buffers) * swapchain->desc.backbuffer_count);
1004         if (!swapchain->back_buffers)
1005         {
1006             ERR("Failed to allocate backbuffer array memory.\n");
1007             hr = E_OUTOFMEMORY;
1008             goto err;
1009         }
1010
1011         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1012         {
1013             TRACE("Creating back buffer %u.\n", i);
1014             if (FAILED(hr = device->device_parent->ops->create_swapchain_surface(device->device_parent, parent,
1015                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1016                     swapchain->desc.backbuffer_format, WINED3DUSAGE_RENDERTARGET,
1017                     swapchain->desc.multisample_type, swapchain->desc.multisample_quality,
1018                     &swapchain->back_buffers[i])))
1019             {
1020                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
1021                 goto err;
1022             }
1023             if (swapchain->back_buffers[i]->container.type == WINED3D_CONTAINER_NONE)
1024                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
1025         }
1026     }
1027
1028     /* Swapchains share the depth/stencil buffer, so only create a single depthstencil surface. */
1029     if (desc->enable_auto_depth_stencil && surface_type == WINED3D_SURFACE_TYPE_OPENGL)
1030     {
1031         TRACE("Creating depth/stencil buffer.\n");
1032         if (!device->auto_depth_stencil)
1033         {
1034             if (FAILED(hr = device->device_parent->ops->create_swapchain_surface(device->device_parent,
1035                     device->device_parent, swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1036                     swapchain->desc.auto_depth_stencil_format, WINED3DUSAGE_DEPTHSTENCIL,
1037                     swapchain->desc.multisample_type, swapchain->desc.multisample_quality,
1038                     &device->auto_depth_stencil)))
1039             {
1040                 WARN("Failed to create the auto depth stencil, hr %#x.\n", hr);
1041                 goto err;
1042             }
1043
1044             surface_set_container(device->auto_depth_stencil, WINED3D_CONTAINER_NONE, NULL);
1045         }
1046     }
1047
1048     wined3d_swapchain_get_gamma_ramp(swapchain, &swapchain->orig_gamma);
1049
1050     return WINED3D_OK;
1051
1052 err:
1053     if (displaymode_set)
1054     {
1055         DEVMODEW devmode;
1056
1057         ClipCursor(NULL);
1058
1059         /* Change the display settings */
1060         memset(&devmode, 0, sizeof(devmode));
1061         devmode.dmSize = sizeof(devmode);
1062         devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
1063         devmode.dmBitsPerPel = format->byte_count * CHAR_BIT;
1064         devmode.dmPelsWidth = swapchain->orig_width;
1065         devmode.dmPelsHeight = swapchain->orig_height;
1066         ChangeDisplaySettingsExW(adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);
1067     }
1068
1069     if (swapchain->back_buffers)
1070     {
1071         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1072         {
1073             if (swapchain->back_buffers[i])
1074             {
1075                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
1076                 wined3d_surface_decref(swapchain->back_buffers[i]);
1077             }
1078         }
1079         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
1080     }
1081
1082     if (swapchain->context)
1083     {
1084         if (swapchain->context[0])
1085         {
1086             context_release(swapchain->context[0]);
1087             context_destroy(device, swapchain->context[0]);
1088             swapchain->num_contexts = 0;
1089         }
1090         HeapFree(GetProcessHeap(), 0, swapchain->context);
1091     }
1092
1093     if (swapchain->front_buffer)
1094     {
1095         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
1096         wined3d_surface_decref(swapchain->front_buffer);
1097     }
1098
1099     return hr;
1100 }
1101
1102 /* Do not call while under the GL lock. */
1103 HRESULT CDECL wined3d_swapchain_create(struct wined3d_device *device,
1104         struct wined3d_swapchain_desc *desc, enum wined3d_surface_type surface_type,
1105         void *parent, const struct wined3d_parent_ops *parent_ops,
1106         struct wined3d_swapchain **swapchain)
1107 {
1108     struct wined3d_swapchain *object;
1109     HRESULT hr;
1110
1111     TRACE("device %p, desc %p, swapchain %p, parent %p, surface_type %#x.\n",
1112             device, desc, swapchain, parent, surface_type);
1113
1114     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
1115     if (!object)
1116     {
1117         ERR("Failed to allocate swapchain memory.\n");
1118         return E_OUTOFMEMORY;
1119     }
1120
1121     hr = swapchain_init(object, surface_type, device, desc, parent, parent_ops);
1122     if (FAILED(hr))
1123     {
1124         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
1125         HeapFree(GetProcessHeap(), 0, object);
1126         return hr;
1127     }
1128
1129     TRACE("Created swapchain %p.\n", object);
1130     *swapchain = object;
1131
1132     return WINED3D_OK;
1133 }
1134
1135 /* Do not call while under the GL lock. */
1136 static struct wined3d_context *swapchain_create_context(struct wined3d_swapchain *swapchain)
1137 {
1138     struct wined3d_context **newArray;
1139     struct wined3d_context *ctx;
1140
1141     TRACE("Creating a new context for swapchain %p, thread %u.\n", swapchain, GetCurrentThreadId());
1142
1143     if (!(ctx = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format)))
1144     {
1145         ERR("Failed to create a new context for the swapchain\n");
1146         return NULL;
1147     }
1148     context_release(ctx);
1149
1150     newArray = HeapAlloc(GetProcessHeap(), 0, sizeof(*newArray) * (swapchain->num_contexts + 1));
1151     if(!newArray) {
1152         ERR("Out of memory when trying to allocate a new context array\n");
1153         context_destroy(swapchain->device, ctx);
1154         return NULL;
1155     }
1156     memcpy(newArray, swapchain->context, sizeof(*newArray) * swapchain->num_contexts);
1157     HeapFree(GetProcessHeap(), 0, swapchain->context);
1158     newArray[swapchain->num_contexts] = ctx;
1159     swapchain->context = newArray;
1160     swapchain->num_contexts++;
1161
1162     TRACE("Returning context %p\n", ctx);
1163     return ctx;
1164 }
1165
1166 void swapchain_destroy_contexts(struct wined3d_swapchain *swapchain)
1167 {
1168     unsigned int i;
1169
1170     for (i = 0; i < swapchain->num_contexts; ++i)
1171     {
1172         context_destroy(swapchain->device, swapchain->context[i]);
1173     }
1174     swapchain->num_contexts = 0;
1175 }
1176
1177 struct wined3d_context *swapchain_get_context(struct wined3d_swapchain *swapchain)
1178 {
1179     DWORD tid = GetCurrentThreadId();
1180     unsigned int i;
1181
1182     for (i = 0; i < swapchain->num_contexts; ++i)
1183     {
1184         if (swapchain->context[i]->tid == tid)
1185             return swapchain->context[i];
1186     }
1187
1188     /* Create a new context for the thread */
1189     return swapchain_create_context(swapchain);
1190 }
1191
1192 void get_drawable_size_swapchain(const struct wined3d_context *context, UINT *width, UINT *height)
1193 {
1194     /* The drawable size of an onscreen drawable is the surface size.
1195      * (Actually: The window size, but the surface is created in window size) */
1196     *width = context->current_rt->resource.width;
1197     *height = context->current_rt->resource.height;
1198 }
1199
1200 HDC swapchain_get_backup_dc(struct wined3d_swapchain *swapchain)
1201 {
1202     if (!swapchain->backup_dc)
1203     {
1204         TRACE("Creating the backup window for swapchain %p.\n", swapchain);
1205
1206         if (!(swapchain->backup_wnd = CreateWindowA(WINED3D_OPENGL_WINDOW_CLASS_NAME, "WineD3D fake window",
1207                 WS_OVERLAPPEDWINDOW, 10, 10, 10, 10, NULL, NULL, NULL, NULL)))
1208         {
1209             ERR("Failed to create a window.\n");
1210             return NULL;
1211         }
1212
1213         if (!(swapchain->backup_dc = GetDC(swapchain->backup_wnd)))
1214         {
1215             ERR("Failed to get a DC.\n");
1216             DestroyWindow(swapchain->backup_wnd);
1217             swapchain->backup_wnd = NULL;
1218             return NULL;
1219         }
1220     }
1221
1222     return swapchain->backup_dc;
1223 }
1224
1225 void swapchain_update_draw_bindings(struct wined3d_swapchain *swapchain)
1226 {
1227     UINT i;
1228
1229     surface_update_draw_binding(swapchain->front_buffer);
1230
1231     for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1232     {
1233         surface_update_draw_binding(swapchain->back_buffers[i]);
1234     }
1235 }