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         context_apply_fbo_state_blit(context, GL_READ_FRAMEBUFFER, backbuffer, NULL, location);
 320         gl_info->gl_ops.gl.p_glReadBuffer(GL_COLOR_ATTACHMENT0);
 321         context_check_fbo_status(context, GL_READ_FRAMEBUFFER);
 322
 323         context_apply_fbo_state_blit(context, GL_DRAW_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 324         context_set_draw_buffer(context, GL_BACK);
 325         context_invalidate_state(context, STATE_FRAMEBUFFER);
 326
 327         gl_info->gl_ops.gl.p_glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 328         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
 329         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
 330         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
 331         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
 332
 333         gl_info->gl_ops.gl.p_glDisable(GL_SCISSOR_TEST);
 334         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
 335
 336         /* Note that the texture is upside down */
 337         gl_info->fbo_ops.glBlitFramebuffer(src_rect->left, src_rect->top, src_rect->right, src_rect->bottom,
 338                 dst_rect->left, win_h - dst_rect->top, dst_rect->right, win_h - dst_rect->bottom,
 339                 GL_COLOR_BUFFER_BIT, gl_filter);
 340         checkGLcall("Swapchain present blit(EXT_framebuffer_blit)\n");
 341     }
 342     else
 343     {
 344         struct wined3d_device *device = swapchain->device;
 345         struct wined3d_context *context2;
 346         float tex_left = src_rect->left;
 347         float tex_top = src_rect->top;
 348         float tex_right = src_rect->right;
 349         float tex_bottom = src_rect->bottom;
 350
 351         context2 = context_acquire(device, swapchain->back_buffers[0]);
 352         context_apply_blit_state(context2, device);
 353
 354         if (backbuffer->flags & SFLAG_NORMCOORD)
 355         {
 356             tex_left /= src_w;
 357             tex_right /= src_w;
 358             tex_top /= src_h;
 359             tex_bottom /= src_h;
 360         }
 361
 362         if (is_complex_fixup(backbuffer->resource.format->color_fixup))
 363             gl_filter = GL_NEAREST;
 364
 365         context_apply_fbo_state_blit(context2, GL_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 366         context_bind_texture(context2, backbuffer->texture_target, backbuffer->texture_name);
 367
 368         /* Set up the texture. The surface is not in a wined3d_texture
 369          * container, so there are no D3D texture settings to dirtify. */
 370         device->blitter->set_shader(device->blit_priv, context2, backbuffer);
 371         gl_info->gl_ops.gl.p_glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MIN_FILTER, gl_filter);
 372         gl_info->gl_ops.gl.p_glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MAG_FILTER, gl_filter);
 373
 374         context_set_draw_buffer(context, GL_BACK);
 375
 376         /* Set the viewport to the destination rectandle, disable any projection
 377          * transformation set up by context_apply_blit_state(), and draw a
 378          * (-1,-1)-(1,1) quad.
 379          *
 380          * Back up viewport and matrix to avoid breaking last_was_blit
 381          *
 382          * Note that context_apply_blit_state() set up viewport and ortho to
 383          * match the surface size - we want the GL drawable(=window) size. */
 384         gl_info->gl_ops.gl.p_glPushAttrib(GL_VIEWPORT_BIT);
 385         gl_info->gl_ops.gl.p_glViewport(dst_rect->left, win_h - dst_rect->bottom,
 386                 dst_rect->right, win_h - dst_rect->top);
 387         gl_info->gl_ops.gl.p_glMatrixMode(GL_PROJECTION);
 388         gl_info->gl_ops.gl.p_glPushMatrix();
 389         gl_info->gl_ops.gl.p_glLoadIdentity();
 390
 391         gl_info->gl_ops.gl.p_glBegin(GL_QUADS);
 392             /* bottom left */
 393             gl_info->gl_ops.gl.p_glTexCoord2f(tex_left, tex_bottom);
 394             gl_info->gl_ops.gl.p_glVertex2i(-1, -1);
 395
 396             /* top left */
 397             gl_info->gl_ops.gl.p_glTexCoord2f(tex_left, tex_top);
 398             gl_info->gl_ops.gl.p_glVertex2i(-1, 1);
 399
 400             /* top right */
 401             gl_info->gl_ops.gl.p_glTexCoord2f(tex_right, tex_top);
 402             gl_info->gl_ops.gl.p_glVertex2i(1, 1);
 403
 404             /* bottom right */
 405             gl_info->gl_ops.gl.p_glTexCoord2f(tex_right, tex_bottom);
 406             gl_info->gl_ops.gl.p_glVertex2i(1, -1);
 407         gl_info->gl_ops.gl.p_glEnd();
 408
 409         gl_info->gl_ops.gl.p_glPopMatrix();
 410         gl_info->gl_ops.gl.p_glPopAttrib();
 411
 412         device->blitter->unset_shader(context->gl_info);
 413         checkGLcall("Swapchain present blit(manual)\n");
 414
 415         context_release(context2);
 416     }
 417 }
 418
 419 static void swapchain_gl_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 420         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 421 {
 422     struct wined3d_surface *back_buffer = swapchain->back_buffers[0];
 423     const struct wined3d_fb_state *fb = &swapchain->device->fb;
 424     const struct wined3d_gl_info *gl_info;
 425     struct wined3d_context *context;
 426     RECT src_rect, dst_rect;
 427     BOOL render_to_fbo;
 428
 429     context = context_acquire(swapchain->device, back_buffer);
 430     if (!context->valid)
 431     {
 432         context_release(context);
 433         WARN("Invalid context, skipping present.\n");
 434         return;
 435     }
 436
 437     gl_info = context->gl_info;
 438
 439     /* Render the cursor onto the back buffer, using our nifty directdraw blitting code :-) */
 440     if (swapchain->device->bCursorVisible &&
 441         swapchain->device->cursorTexture &&
 442         !swapchain->device->hardwareCursor)
 443     {
 444         struct wined3d_surface cursor;
 445         RECT destRect =
 446         {
 447             swapchain->device->xScreenSpace - swapchain->device->xHotSpot,
 448             swapchain->device->yScreenSpace - swapchain->device->yHotSpot,
 449             swapchain->device->xScreenSpace + swapchain->device->cursorWidth - swapchain->device->xHotSpot,
 450             swapchain->device->yScreenSpace + swapchain->device->cursorHeight - swapchain->device->yHotSpot,
 451         };
 452         TRACE("Rendering the cursor. Creating fake surface at %p\n", &cursor);
 453         /* Build a fake surface to call the Blitting code. It is not possible to use the interface passed by
 454          * the application because we are only supposed to copy the information out. Using a fake surface
 455          * allows us to use the Blitting engine and avoid copying the whole texture -> render target blitting code.
 456          */
 457         memset(&cursor, 0, sizeof(cursor));
 458         cursor.resource.ref = 1;
 459         cursor.resource.device = swapchain->device;
 460         cursor.resource.pool = WINED3D_POOL_SCRATCH;
 461         cursor.resource.format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
 462         cursor.resource.type = WINED3D_RTYPE_SURFACE;
 463         cursor.texture_name = swapchain->device->cursorTexture;
 464         cursor.texture_target = GL_TEXTURE_2D;
 465         cursor.texture_level = 0;
 466         cursor.resource.width = swapchain->device->cursorWidth;
 467         cursor.resource.height = swapchain->device->cursorHeight;
 468         /* The cursor must have pow2 sizes */
 469         cursor.pow2Width = cursor.resource.width;
 470         cursor.pow2Height = cursor.resource.height;
 471         /* The surface is in the texture */
 472         cursor.flags |= SFLAG_INTEXTURE;
 473         /* DDBLT_KEYSRC will cause BltOverride to enable the alpha test with GL_NOTEQUAL, 0.0,
 474          * which is exactly what we want :-)
 475          */
 476         if (swapchain->desc.windowed)
 477             MapWindowPoints(NULL, swapchain->win_handle, (POINT *)&destRect, 2);
 478         wined3d_surface_blt(back_buffer, &destRect, &cursor, NULL, WINEDDBLT_KEYSRC,
 479                 NULL, WINED3D_TEXF_POINT);
 480     }
 481
 482     if (swapchain->device->logo_surface)
 483     {
 484         struct wined3d_surface *src_surface = swapchain->device->logo_surface;
 485         RECT rect = {0, 0, src_surface->resource.width, src_surface->resource.height};
 486
 487         /* Blit the logo into the upper left corner of the drawable. */
 488         wined3d_surface_blt(back_buffer, &rect, src_surface, &rect, WINEDDBLT_KEYSRC,
 489                 NULL, WINED3D_TEXF_POINT);
 490     }
 491
 492     TRACE("Presenting HDC %p.\n", context->hdc);
 493
 494     render_to_fbo = swapchain->render_to_fbo;
 495
 496     if (src_rect_in)
 497     {
 498         src_rect = *src_rect_in;
 499         if (!render_to_fbo && (src_rect.left || src_rect.top
 500                 || src_rect.right != swapchain->desc.backbuffer_width
 501                 || src_rect.bottom != swapchain->desc.backbuffer_height))
 502         {
 503             render_to_fbo = TRUE;
 504         }
 505     }
 506     else
 507     {
 508         src_rect.left = 0;
 509         src_rect.top = 0;
 510         src_rect.right = swapchain->desc.backbuffer_width;
 511         src_rect.bottom = swapchain->desc.backbuffer_height;
 512     }
 513
 514     if (dst_rect_in)
 515         dst_rect = *dst_rect_in;
 516     else
 517         GetClientRect(swapchain->win_handle, &dst_rect);
 518
 519     if (!render_to_fbo && (dst_rect.left || dst_rect.top
 520             || dst_rect.right != swapchain->desc.backbuffer_width
 521             || dst_rect.bottom != swapchain->desc.backbuffer_height))
 522         render_to_fbo = TRUE;
 523
 524     /* Rendering to a window of different size, presenting partial rectangles,
 525      * or rendering to a different window needs help from FBO_blit or a textured
 526      * draw. Render the swapchain to a FBO in the future.
 527      *
 528      * Note that FBO_blit from the backbuffer to the frontbuffer cannot solve
 529      * all these issues - this fails if the window is smaller than the backbuffer.
 530      */
 531     if (!swapchain->render_to_fbo && render_to_fbo && wined3d_settings.offscreen_rendering_mode == ORM_FBO)
 532     {
 533         surface_load_location(back_buffer, SFLAG_INTEXTURE, NULL);
 534         surface_modify_location(back_buffer, SFLAG_INDRAWABLE, FALSE);
 535         swapchain->render_to_fbo = TRUE;
 536         swapchain_update_draw_bindings(swapchain);
 537     }
 538     else
 539     {
 540         surface_load_location(back_buffer, back_buffer->draw_binding, NULL);
 541     }
 542
 543     if (swapchain->render_to_fbo)
 544     {
 545         /* This codepath should only be hit with the COPY swapeffect. Otherwise a backbuffer-
 546          * window size mismatch is impossible(fullscreen) and src and dst rectangles are
 547          * not allowed(they need the COPY swapeffect)
 548          *
 549          * The DISCARD swap effect is ok as well since any backbuffer content is allowed after
 550          * the swap. */
 551         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 552             FIXME("Render-to-fbo with WINED3D_SWAP_EFFECT_FLIP\n");
 553
 554         swapchain_blit(swapchain, context, &src_rect, &dst_rect);
 555     }
 556
 557     if (swapchain->num_contexts > 1)
 558         gl_info->gl_ops.gl.p_glFinish();
 559
 560     /* call wglSwapBuffers through the gl table to avoid confusing the Steam overlay */
 561     gl_info->gl_ops.wgl.p_wglSwapBuffers(context->hdc); /* TODO: cycle through the swapchain buffers */
 562
 563     TRACE("SwapBuffers called, Starting new frame\n");
 564     /* FPS support */
 565     if (TRACE_ON(fps))
 566     {
 567         DWORD time = GetTickCount();
 568         ++swapchain->frames;
 569
 570         /* every 1.5 seconds */
 571         if (time - swapchain->prev_time > 1500)
 572         {
 573             TRACE_(fps)("%p @ approx %.2ffps\n",
 574                     swapchain, 1000.0 * swapchain->frames / (time - swapchain->prev_time));
 575             swapchain->prev_time = time;
 576             swapchain->frames = 0;
 577         }
 578     }
 579
 580     /* This is disabled, but the code left in for debug purposes.
 581      *
 582      * Since we're allowed to modify the new back buffer on a D3DSWAPEFFECT_DISCARD flip,
 583      * we can clear it with some ugly color to make bad drawing visible and ease debugging.
 584      * The Debug runtime does the same on Windows. However, a few games do not redraw the
 585      * screen properly, like Max Payne 2, which leaves a few pixels undefined.
 586      *
 587      * Tests show that the content of the back buffer after a discard flip is indeed not
 588      * reliable, so no game can depend on the exact content. However, it resembles the
 589      * old contents in some way, for example by showing fragments at other locations. In
 590      * general, the color theme is still intact. So Max payne, which draws rather dark scenes
 591      * gets a dark background image. If we clear it with a bright ugly color, the game's
 592      * bug shows up much more than it does on Windows, and the players see single pixels
 593      * with wrong colors.
 594      * (The Max Payne bug has been confirmed on Windows with the debug runtime) */
 595     if (FALSE && swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_DISCARD)
 596     {
 597         static const struct wined3d_color cyan = {0.0f, 1.0f, 1.0f, 1.0f};
 598
 599         TRACE("Clearing the color buffer with cyan color\n");
 600
 601         wined3d_device_clear(swapchain->device, 0, NULL,
 602                 WINED3DCLEAR_TARGET, &cyan, 1.0f, 0);
 603     }
 604
 605     if (!swapchain->render_to_fbo && ((swapchain->front_buffer->flags & SFLAG_INSYSMEM)
 606             || (back_buffer->flags & SFLAG_INSYSMEM)))
 607     {
 608         /* Both memory copies of the surfaces are ok, flip them around too instead of dirtifying
 609          * Doesn't work with render_to_fbo because we're not flipping
 610          */
 611         struct wined3d_surface *front = swapchain->front_buffer;
 612
 613         if (front->resource.size == back_buffer->resource.size)
 614         {
 615             DWORD fbflags;
 616             flip_surface(front, back_buffer);
 617
 618             /* Tell the front buffer surface that is has been modified. However,
 619              * the other locations were preserved during that, so keep the flags.
 620              * This serves to update the emulated overlay, if any. */
 621             fbflags = front->flags;
 622             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 623             front->flags = fbflags;
 624         }
 625         else
 626         {
 627             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 628             surface_modify_location(back_buffer, SFLAG_INDRAWABLE, TRUE);
 629         }
 630     }
 631     else
 632     {
 633         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 634         /* If the swapeffect is DISCARD, the back buffer is undefined. That means the SYSMEM
 635          * and INTEXTURE copies can keep their old content if they have any defined content.
 636          * If the swapeffect is COPY, the content remains the same. If it is FLIP however,
 637          * the texture / sysmem copy needs to be reloaded from the drawable
 638          */
 639         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 640             surface_modify_location(back_buffer, back_buffer->draw_binding, TRUE);
 641     }
 642
 643     if (fb->depth_stencil)
 644     {
 645         if (swapchain->desc.flags & WINED3DPRESENTFLAG_DISCARD_DEPTHSTENCIL
 646                 || fb->depth_stencil->flags & SFLAG_DISCARD)
 647         {
 648             surface_modify_ds_location(fb->depth_stencil, SFLAG_DISCARDED,
 649                     fb->depth_stencil->resource.width,
 650                     fb->depth_stencil->resource.height);
 651             if (fb->depth_stencil == swapchain->device->onscreen_depth_stencil)
 652             {
 653                 wined3d_surface_decref(swapchain->device->onscreen_depth_stencil);
 654                 swapchain->device->onscreen_depth_stencil = NULL;
 655             }
 656         }
 657     }
 658
 659     context_release(context);
 660 }
 661
 662 static const struct wined3d_swapchain_ops swapchain_gl_ops =
 663 {
 664     swapchain_gl_present,
 665 };
 666
 667 /* Helper function that blits the front buffer contents to the target window. */
 668 void x11_copy_to_screen(const struct wined3d_swapchain *swapchain, const RECT *rect)
 669 {
 670     const struct wined3d_surface *front;
 671     POINT offset = {0, 0};
 672     HDC src_dc, dst_dc;
 673     RECT draw_rect;
 674     HWND window;
 675
 676     TRACE("swapchain %p, rect %s.\n", swapchain, wine_dbgstr_rect(rect));
 677
 678     front = swapchain->front_buffer;
 679     if (!(front->resource.usage & WINED3DUSAGE_RENDERTARGET))
 680         return;
 681
 682     if (front->resource.map_count)
 683         ERR("Trying to blit a mapped surface.\n");
 684
 685     TRACE("Copying surface %p to screen.\n", front);
 686
 687     src_dc = front->hDC;
 688     window = swapchain->win_handle;
 689     dst_dc = GetDCEx(window, 0, DCX_CLIPSIBLINGS | DCX_CACHE);
 690
 691     /* Front buffer coordinates are screen coordinates. Map them to the
 692      * destination window if not fullscreened. */
 693     if (swapchain->desc.windowed)
 694         ClientToScreen(window, &offset);
 695
 696     TRACE("offset %s.\n", wine_dbgstr_point(&offset));
 697
 698     draw_rect.left = 0;
 699     draw_rect.right = front->resource.width;
 700     draw_rect.top = 0;
 701     draw_rect.bottom = front->resource.height;
 702
 703     if (rect)
 704         IntersectRect(&draw_rect, &draw_rect, rect);
 705
 706     BitBlt(dst_dc, draw_rect.left - offset.x, draw_rect.top - offset.y,
 707             draw_rect.right - draw_rect.left, draw_rect.bottom - draw_rect.top,
 708             src_dc, draw_rect.left, draw_rect.top, SRCCOPY);
 709     ReleaseDC(window, dst_dc);
 710 }
 711
 712 static void swapchain_gdi_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 713         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 714 {
 715     struct wined3d_surface *front, *back;
 716
 717     front = swapchain->front_buffer;
 718     back = swapchain->back_buffers[0];
 719
 720     /* Flip the DC. */
 721     {
 722         HDC tmp;
 723         tmp = front->hDC;
 724         front->hDC = back->hDC;
 725         back->hDC = tmp;
 726     }
 727
 728     /* Flip the DIBsection. */
 729     {
 730         HBITMAP tmp;
 731         tmp = front->dib.DIBsection;
 732         front->dib.DIBsection = back->dib.DIBsection;
 733         back->dib.DIBsection = tmp;
 734     }
 735
 736     /* Flip the surface data. */
 737     {
 738         void *tmp;
 739
 740         tmp = front->dib.bitmap_data;
 741         front->dib.bitmap_data = back->dib.bitmap_data;
 742         back->dib.bitmap_data = tmp;
 743
 744         tmp = front->resource.allocatedMemory;
 745         front->resource.allocatedMemory = back->resource.allocatedMemory;
 746         back->resource.allocatedMemory = tmp;
 747
 748         if (front->resource.heapMemory)
 749             ERR("GDI Surface %p has heap memory allocated.\n", front);
 750
 751         if (back->resource.heapMemory)
 752             ERR("GDI Surface %p has heap memory allocated.\n", back);
 753     }
 754
 755     /* FPS support */
 756     if (TRACE_ON(fps))
 757     {
 758         static LONG prev_time, frames;
 759         DWORD time = GetTickCount();
 760
 761         ++frames;
 762
 763         /* every 1.5 seconds */
 764         if (time - prev_time > 1500)
 765         {
 766             TRACE_(fps)("@ approx %.2ffps\n", 1000.0 * frames / (time - prev_time));
 767             prev_time = time;
 768             frames = 0;
 769         }
 770     }
 771
 772     x11_copy_to_screen(swapchain, NULL);
 773 }
 774
 775 static const struct wined3d_swapchain_ops swapchain_gdi_ops =
 776 {
 777     swapchain_gdi_present,
 778 };
 779
 780 void swapchain_update_render_to_fbo(struct wined3d_swapchain *swapchain)
 781 {
 782     RECT client_rect;
 783
 784     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
 785         return;
 786
 787     if (!swapchain->desc.backbuffer_count)
 788     {
 789         TRACE("Single buffered rendering.\n");
 790         swapchain->render_to_fbo = FALSE;
 791         return;
 792     }
 793
 794     GetClientRect(swapchain->win_handle, &client_rect);
 795
 796     TRACE("Backbuffer %ux%u, window %ux%u.\n",
 797             swapchain->desc.backbuffer_width,
 798             swapchain->desc.backbuffer_height,
 799             client_rect.right, client_rect.bottom);
 800     TRACE("Multisample type %#x, quality %#x.\n",
 801             swapchain->desc.multisample_type,
 802             swapchain->desc.multisample_quality);
 803
 804     if (!wined3d_settings.always_offscreen && !swapchain->desc.multisample_type
 805             && swapchain->desc.backbuffer_width == client_rect.right
 806             && swapchain->desc.backbuffer_height == client_rect.bottom)
 807     {
 808         TRACE("Backbuffer dimensions match window dimensions, rendering onscreen.\n");
 809         swapchain->render_to_fbo = FALSE;
 810         return;
 811     }
 812
 813     TRACE("Rendering to FBO.\n");
 814     swapchain->render_to_fbo = TRUE;
 815 }
 816
 817 /* Do not call while under the GL lock. */
 818 static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, enum wined3d_surface_type surface_type,
 819         struct wined3d_device *device, struct wined3d_swapchain_desc *desc,
 820         void *parent, const struct wined3d_parent_ops *parent_ops)
 821 {
 822     const struct wined3d_adapter *adapter = device->adapter;
 823     const struct wined3d_format *format;
 824     struct wined3d_display_mode mode;
 825     BOOL displaymode_set = FALSE;
 826     RECT client_rect;
 827     HWND window;
 828     HRESULT hr;
 829     UINT i;
 830
 831     if (desc->backbuffer_count > WINED3DPRESENT_BACK_BUFFER_MAX)
 832     {
 833         FIXME("The application requested %u back buffers, this is not supported.\n",
 834                 desc->backbuffer_count);
 835         return WINED3DERR_INVALIDCALL;
 836     }
 837
 838     if (desc->backbuffer_count > 1)
 839     {
 840         FIXME("The application requested more than one back buffer, this is not properly supported.\n"
 841                 "Please configure the application to use double buffering (1 back buffer) if possible.\n");
 842     }
 843
 844     switch (surface_type)
 845     {
 846         case WINED3D_SURFACE_TYPE_GDI:
 847             swapchain->swapchain_ops = &swapchain_gdi_ops;
 848             break;
 849
 850         case WINED3D_SURFACE_TYPE_OPENGL:
 851             swapchain->swapchain_ops = &swapchain_gl_ops;
 852             break;
 853
 854         default:
 855             ERR("Invalid surface type %#x.\n", surface_type);
 856             return WINED3DERR_INVALIDCALL;
 857     }
 858
 859     window = desc->device_window ? desc->device_window : device->create_parms.focus_window;
 860
 861     swapchain->device = device;
 862     swapchain->parent = parent;
 863     swapchain->parent_ops = parent_ops;
 864     swapchain->ref = 1;
 865     swapchain->win_handle = window;
 866     swapchain->device_window = window;
 867
 868     wined3d_get_adapter_display_mode(device->wined3d, adapter->ordinal, &mode, NULL);
 869     swapchain->orig_width = mode.width;
 870     swapchain->orig_height = mode.height;
 871     swapchain->orig_fmt = mode.format_id;
 872     format = wined3d_get_format(&adapter->gl_info, mode.format_id);
 873
 874     GetClientRect(window, &client_rect);
 875     if (desc->windowed
 876             && (!desc->backbuffer_width || !desc->backbuffer_height
 877             || desc->backbuffer_format == WINED3DFMT_UNKNOWN))
 878     {
 879
 880         if (!desc->backbuffer_width)
 881         {
 882             desc->backbuffer_width = client_rect.right;
 883             TRACE("Updating width to %u.\n", desc->backbuffer_width);
 884         }
 885
 886         if (!desc->backbuffer_height)
 887         {
 888             desc->backbuffer_height = client_rect.bottom;
 889             TRACE("Updating height to %u.\n", desc->backbuffer_height);
 890         }
 891
 892         if (desc->backbuffer_format == WINED3DFMT_UNKNOWN)
 893         {
 894             desc->backbuffer_format = swapchain->orig_fmt;
 895             TRACE("Updating format to %s.\n", debug_d3dformat(swapchain->orig_fmt));
 896         }
 897     }
 898     swapchain->desc = *desc;
 899     swapchain_update_render_to_fbo(swapchain);
 900
 901     TRACE("Creating front buffer.\n");
 902     if (FAILED(hr = device->device_parent->ops->create_swapchain_surface(device->device_parent, parent,
 903             swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
 904             swapchain->desc.backbuffer_format, WINED3DUSAGE_RENDERTARGET,
 905             swapchain->desc.multisample_type, swapchain->desc.multisample_quality,
 906             &swapchain->front_buffer)))
 907     {
 908         WARN("Failed to create front buffer, hr %#x.\n", hr);
 909         goto err;
 910     }
 911
 912     if (swapchain->front_buffer->container.type == WINED3D_CONTAINER_NONE)
 913         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_SWAPCHAIN, swapchain);
 914     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 915         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 916
 917     /* MSDN says we're only allowed a single fullscreen swapchain per device,
 918      * so we should really check to see if there is a fullscreen swapchain
 919      * already. Does a single head count as full screen? */
 920
 921     if (!desc->windowed)
 922     {
 923         struct wined3d_display_mode mode;
 924
 925         /* Change the display settings */
 926         mode.width = desc->backbuffer_width;
 927         mode.height = desc->backbuffer_height;
 928         mode.format_id = desc->backbuffer_format;
 929         mode.refresh_rate = desc->refresh_rate;
 930         mode.scanline_ordering = WINED3D_SCANLINE_ORDERING_UNKNOWN;
 931
 932         if (FAILED(hr = wined3d_set_adapter_display_mode(device->wined3d, device->adapter->ordinal, &mode)))
 933         {
 934             WARN("Failed to set display mode, hr %#x.\n", hr);
 935             goto err;
 936         }
 937         displaymode_set = TRUE;
 938     }
 939
 940     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 941     {
 942         static const enum wined3d_format_id formats[] =
 943         {
 944             WINED3DFMT_D24_UNORM_S8_UINT,
 945             WINED3DFMT_D32_UNORM,
 946             WINED3DFMT_R24_UNORM_X8_TYPELESS,
 947             WINED3DFMT_D16_UNORM,
 948             WINED3DFMT_S1_UINT_D15_UNORM
 949         };
 950
 951         const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 952
 953         swapchain->context = HeapAlloc(GetProcessHeap(), 0, sizeof(*swapchain->context));
 954         if (!swapchain->context)
 955         {
 956             ERR("Failed to create the context array.\n");
 957             hr = E_OUTOFMEMORY;
 958             goto err;
 959         }
 960         swapchain->num_contexts = 1;
 961
 962         /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
 963          * You are able to add a depth + stencil surface at a later stage when you need it.
 964          * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
 965          * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
 966          * context, need torecreate shaders, textures and other resources.
 967          *
 968          * The context manager already takes care of the state problem and for the other tasks code from Reset
 969          * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
 970          * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
 971          * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
 972          * issue needs to be fixed. */
 973         for (i = 0; i < (sizeof(formats) / sizeof(*formats)); i++)
 974         {
 975             swapchain->ds_format = wined3d_get_format(gl_info, formats[i]);
 976             swapchain->context[0] = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format);
 977             if (swapchain->context[0]) break;
 978             TRACE("Depth stencil format %s is not supported, trying next format\n",
 979                   debug_d3dformat(formats[i]));
 980         }
 981
 982         if (!swapchain->context[0])
 983         {
 984             WARN("Failed to create context.\n");
 985             hr = WINED3DERR_NOTAVAILABLE;
 986             goto err;
 987         }
 988
 989         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
 990                 && (!desc->enable_auto_depth_stencil
 991                 || swapchain->desc.auto_depth_stencil_format != swapchain->ds_format->id))
 992         {
 993             FIXME("Add OpenGL context recreation support to context_validate_onscreen_formats\n");
 994         }
 995         context_release(swapchain->context[0]);
 996     }
 997
 998     if (swapchain->desc.backbuffer_count > 0)
 999     {
1000         swapchain->back_buffers = HeapAlloc(GetProcessHeap(), 0,
1001                 sizeof(*swapchain->back_buffers) * swapchain->desc.backbuffer_count);
1002         if (!swapchain->back_buffers)
1003         {
1004             ERR("Failed to allocate backbuffer array memory.\n");
1005             hr = E_OUTOFMEMORY;
1006             goto err;
1007         }
1008
1009         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1010         {
1011             TRACE("Creating back buffer %u.\n", i);
1012             if (FAILED(hr = device->device_parent->ops->create_swapchain_surface(device->device_parent, parent,
1013                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1014                     swapchain->desc.backbuffer_format, WINED3DUSAGE_RENDERTARGET,
1015                     swapchain->desc.multisample_type, swapchain->desc.multisample_quality,
1016                     &swapchain->back_buffers[i])))
1017             {
1018                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
1019                 goto err;
1020             }
1021             if (swapchain->back_buffers[i]->container.type == WINED3D_CONTAINER_NONE)
1022                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
1023         }
1024     }
1025
1026     /* Swapchains share the depth/stencil buffer, so only create a single depthstencil surface. */
1027     if (desc->enable_auto_depth_stencil && surface_type == WINED3D_SURFACE_TYPE_OPENGL)
1028     {
1029         TRACE("Creating depth/stencil buffer.\n");
1030         if (!device->auto_depth_stencil)
1031         {
1032             if (FAILED(hr = device->device_parent->ops->create_swapchain_surface(device->device_parent,
1033                     device->device_parent, swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1034                     swapchain->desc.auto_depth_stencil_format, WINED3DUSAGE_DEPTHSTENCIL,
1035                     swapchain->desc.multisample_type, swapchain->desc.multisample_quality,
1036                     &device->auto_depth_stencil)))
1037             {
1038                 WARN("Failed to create the auto depth stencil, hr %#x.\n", hr);
1039                 goto err;
1040             }
1041
1042             surface_set_container(device->auto_depth_stencil, WINED3D_CONTAINER_NONE, NULL);
1043         }
1044     }
1045
1046     wined3d_swapchain_get_gamma_ramp(swapchain, &swapchain->orig_gamma);
1047
1048     return WINED3D_OK;
1049
1050 err:
1051     if (displaymode_set)
1052     {
1053         DEVMODEW devmode;
1054
1055         ClipCursor(NULL);
1056
1057         /* Change the display settings */
1058         memset(&devmode, 0, sizeof(devmode));
1059         devmode.dmSize = sizeof(devmode);
1060         devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
1061         devmode.dmBitsPerPel = format->byte_count * CHAR_BIT;
1062         devmode.dmPelsWidth = swapchain->orig_width;
1063         devmode.dmPelsHeight = swapchain->orig_height;
1064         ChangeDisplaySettingsExW(adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);
1065     }
1066
1067     if (swapchain->back_buffers)
1068     {
1069         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1070         {
1071             if (swapchain->back_buffers[i])
1072             {
1073                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
1074                 wined3d_surface_decref(swapchain->back_buffers[i]);
1075             }
1076         }
1077         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
1078     }
1079
1080     if (swapchain->context)
1081     {
1082         if (swapchain->context[0])
1083         {
1084             context_release(swapchain->context[0]);
1085             context_destroy(device, swapchain->context[0]);
1086             swapchain->num_contexts = 0;
1087         }
1088         HeapFree(GetProcessHeap(), 0, swapchain->context);
1089     }
1090
1091     if (swapchain->front_buffer)
1092     {
1093         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
1094         wined3d_surface_decref(swapchain->front_buffer);
1095     }
1096
1097     return hr;
1098 }
1099
1100 /* Do not call while under the GL lock. */
1101 HRESULT CDECL wined3d_swapchain_create(struct wined3d_device *device,
1102         struct wined3d_swapchain_desc *desc, enum wined3d_surface_type surface_type,
1103         void *parent, const struct wined3d_parent_ops *parent_ops,
1104         struct wined3d_swapchain **swapchain)
1105 {
1106     struct wined3d_swapchain *object;
1107     HRESULT hr;
1108
1109     TRACE("device %p, desc %p, swapchain %p, parent %p, surface_type %#x.\n",
1110             device, desc, swapchain, parent, surface_type);
1111
1112     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
1113     if (!object)
1114     {
1115         ERR("Failed to allocate swapchain memory.\n");
1116         return E_OUTOFMEMORY;
1117     }
1118
1119     hr = swapchain_init(object, surface_type, device, desc, parent, parent_ops);
1120     if (FAILED(hr))
1121     {
1122         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
1123         HeapFree(GetProcessHeap(), 0, object);
1124         return hr;
1125     }
1126
1127     TRACE("Created swapchain %p.\n", object);
1128     *swapchain = object;
1129
1130     return WINED3D_OK;
1131 }
1132
1133 /* Do not call while under the GL lock. */
1134 static struct wined3d_context *swapchain_create_context(struct wined3d_swapchain *swapchain)
1135 {
1136     struct wined3d_context **newArray;
1137     struct wined3d_context *ctx;
1138
1139     TRACE("Creating a new context for swapchain %p, thread %u.\n", swapchain, GetCurrentThreadId());
1140
1141     if (!(ctx = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format)))
1142     {
1143         ERR("Failed to create a new context for the swapchain\n");
1144         return NULL;
1145     }
1146     context_release(ctx);
1147
1148     newArray = HeapAlloc(GetProcessHeap(), 0, sizeof(*newArray) * (swapchain->num_contexts + 1));
1149     if(!newArray) {
1150         ERR("Out of memory when trying to allocate a new context array\n");
1151         context_destroy(swapchain->device, ctx);
1152         return NULL;
1153     }
1154     memcpy(newArray, swapchain->context, sizeof(*newArray) * swapchain->num_contexts);
1155     HeapFree(GetProcessHeap(), 0, swapchain->context);
1156     newArray[swapchain->num_contexts] = ctx;
1157     swapchain->context = newArray;
1158     swapchain->num_contexts++;
1159
1160     TRACE("Returning context %p\n", ctx);
1161     return ctx;
1162 }
1163
1164 void swapchain_destroy_contexts(struct wined3d_swapchain *swapchain)
1165 {
1166     unsigned int i;
1167
1168     for (i = 0; i < swapchain->num_contexts; ++i)
1169     {
1170         context_destroy(swapchain->device, swapchain->context[i]);
1171     }
1172     swapchain->num_contexts = 0;
1173 }
1174
1175 struct wined3d_context *swapchain_get_context(struct wined3d_swapchain *swapchain)
1176 {
1177     DWORD tid = GetCurrentThreadId();
1178     unsigned int i;
1179
1180     for (i = 0; i < swapchain->num_contexts; ++i)
1181     {
1182         if (swapchain->context[i]->tid == tid)
1183             return swapchain->context[i];
1184     }
1185
1186     /* Create a new context for the thread */
1187     return swapchain_create_context(swapchain);
1188 }
1189
1190 void get_drawable_size_swapchain(const struct wined3d_context *context, UINT *width, UINT *height)
1191 {
1192     /* The drawable size of an onscreen drawable is the surface size.
1193      * (Actually: The window size, but the surface is created in window size) */
1194     *width = context->current_rt->resource.width;
1195     *height = context->current_rt->resource.height;
1196 }
1197
1198 HDC swapchain_get_backup_dc(struct wined3d_swapchain *swapchain)
1199 {
1200     if (!swapchain->backup_dc)
1201     {
1202         TRACE("Creating the backup window for swapchain %p.\n", swapchain);
1203
1204         if (!(swapchain->backup_wnd = CreateWindowA(WINED3D_OPENGL_WINDOW_CLASS_NAME, "WineD3D fake window",
1205                 WS_OVERLAPPEDWINDOW, 10, 10, 10, 10, NULL, NULL, NULL, NULL)))
1206         {
1207             ERR("Failed to create a window.\n");
1208             return NULL;
1209         }
1210
1211         if (!(swapchain->backup_dc = GetDC(swapchain->backup_wnd)))
1212         {
1213             ERR("Failed to get a DC.\n");
1214             DestroyWindow(swapchain->backup_wnd);
1215             swapchain->backup_wnd = NULL;
1216             return NULL;
1217         }
1218     }
1219
1220     return swapchain->backup_dc;
1221 }
1222
1223 void swapchain_update_draw_bindings(struct wined3d_swapchain *swapchain)
1224 {
1225     UINT i;
1226
1227     surface_update_draw_binding(swapchain->front_buffer);
1228
1229     for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1230     {
1231         surface_update_draw_binding(swapchain->back_buffers[i]);
1232     }
1233 }