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

   1 /*
   2  * Copyright 2002-2003 Jason Edmeades
   3  * Copyright 2002-2003 Raphael Junqueira
   4  * Copyright 2005 Oliver Stieber
   5  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
   6  * Copyright 2011 Henri Verbeet for CodeWeavers
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wined3d_private.h"
  25
  26 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  27 WINE_DECLARE_DEBUG_CHANNEL(fps);
  28
  29 /* Do not call while under the GL lock. */
  30 static void swapchain_cleanup(struct wined3d_swapchain *swapchain)
  31 {
  32     struct wined3d_display_mode mode;
  33     UINT i;
  34
  35     TRACE("Destroying swapchain %p.\n", swapchain);
  36
  37     wined3d_swapchain_set_gamma_ramp(swapchain, 0, &swapchain->orig_gamma);
  38
  39     /* Release the swapchain's draw buffers. Make sure swapchain->back_buffers[0]
  40      * is the last buffer to be destroyed, FindContext() depends on that. */
  41     if (swapchain->front_buffer)
  42     {
  43         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
  44         if (wined3d_surface_decref(swapchain->front_buffer))
  45             WARN("Something's still holding the front buffer (%p).\n", swapchain->front_buffer);
  46         swapchain->front_buffer = NULL;
  47     }
  48
  49     if (swapchain->back_buffers)
  50     {
  51         i = swapchain->desc.backbuffer_count;
  52
  53         while (i--)
  54         {
  55             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
  56             if (wined3d_surface_decref(swapchain->back_buffers[i]))
  57                 WARN("Something's still holding back buffer %u (%p).\n", i, swapchain->back_buffers[i]);
  58         }
  59         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
  60         swapchain->back_buffers = NULL;
  61     }
  62
  63     for (i = 0; i < swapchain->num_contexts; ++i)
  64     {
  65         context_destroy(swapchain->device, swapchain->context[i]);
  66     }
  67     HeapFree(GetProcessHeap(), 0, swapchain->context);
  68
  69     /* Restore the screen resolution if we rendered in fullscreen.
  70      * This will restore the screen resolution to what it was before creating
  71      * the swapchain. In case of d3d8 and d3d9 this will be the original
  72      * desktop resolution. In case of d3d7 this will be a NOP because ddraw
  73      * sets the resolution before starting up Direct3D, thus orig_width and
  74      * orig_height will be equal to the modes in the presentation params. */
  75     if (!swapchain->desc.windowed && swapchain->desc.auto_restore_display_mode)
  76     {
  77         mode.width = swapchain->orig_width;
  78         mode.height = swapchain->orig_height;
  79         mode.refresh_rate = 0;
  80         mode.format_id = swapchain->orig_fmt;
  81         wined3d_device_set_display_mode(swapchain->device, 0, &mode);
  82     }
  83
  84     if (swapchain->backup_dc)
  85     {
  86         TRACE("Destroying backup wined3d window %p, dc %p.\n", swapchain->backup_wnd, swapchain->backup_dc);
  87
  88         ReleaseDC(swapchain->backup_wnd, swapchain->backup_dc);
  89         DestroyWindow(swapchain->backup_wnd);
  90     }
  91 }
  92
  93 ULONG CDECL wined3d_swapchain_incref(struct wined3d_swapchain *swapchain)
  94 {
  95     ULONG refcount = InterlockedIncrement(&swapchain->ref);
  96
  97     TRACE("%p increasing refcount to %u.\n", swapchain, refcount);
  98
  99     return refcount;
 100 }
 101
 102 /* Do not call while under the GL lock. */
 103 ULONG CDECL wined3d_swapchain_decref(struct wined3d_swapchain *swapchain)
 104 {
 105     ULONG refcount = InterlockedDecrement(&swapchain->ref);
 106
 107     TRACE("%p decreasing refcount to %u.\n", swapchain, refcount);
 108
 109     if (!refcount)
 110     {
 111         swapchain_cleanup(swapchain);
 112         swapchain->parent_ops->wined3d_object_destroyed(swapchain->parent);
 113         HeapFree(GetProcessHeap(), 0, swapchain);
 114     }
 115
 116     return refcount;
 117 }
 118
 119 void * CDECL wined3d_swapchain_get_parent(const struct wined3d_swapchain *swapchain)
 120 {
 121     TRACE("swapchain %p.\n", swapchain);
 122
 123     return swapchain->parent;
 124 }
 125
 126 HRESULT CDECL wined3d_swapchain_set_window(struct wined3d_swapchain *swapchain, HWND window)
 127 {
 128     if (!window)
 129         window = swapchain->device_window;
 130     if (window == swapchain->win_handle)
 131         return WINED3D_OK;
 132
 133     TRACE("Setting swapchain %p window from %p to %p.\n",
 134             swapchain, swapchain->win_handle, window);
 135     swapchain->win_handle = window;
 136
 137     return WINED3D_OK;
 138 }
 139
 140 HRESULT CDECL wined3d_swapchain_present(struct wined3d_swapchain *swapchain,
 141         const RECT *src_rect, const RECT *dst_rect, HWND dst_window_override,
 142         const RGNDATA *dirty_region, DWORD flags)
 143 {
 144     TRACE("swapchain %p, src_rect %s, dst_rect %s, dst_window_override %p, dirty_region %p, flags %#x.\n",
 145             swapchain, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect),
 146             dst_window_override, dirty_region, flags);
 147
 148     wined3d_swapchain_set_window(swapchain, dst_window_override);
 149
 150     return swapchain->swapchain_ops->swapchain_present(swapchain,
 151             src_rect, dst_rect, dirty_region, flags);
 152 }
 153
 154 HRESULT CDECL wined3d_swapchain_get_front_buffer_data(const struct wined3d_swapchain *swapchain,
 155         struct wined3d_surface *dst_surface)
 156 {
 157     struct wined3d_surface *src_surface;
 158     RECT src_rect, dst_rect;
 159
 160     TRACE("swapchain %p, dst_surface %p.\n", swapchain, dst_surface);
 161
 162     src_surface = swapchain->front_buffer;
 163     SetRect(&src_rect, 0, 0, src_surface->resource.width, src_surface->resource.height);
 164     dst_rect = src_rect;
 165
 166     if (swapchain->desc.windowed)
 167     {
 168         MapWindowPoints(swapchain->win_handle, NULL, (POINT *)&dst_rect, 2);
 169         FIXME("Using destination rect %s in windowed mode, this is likely wrong.\n",
 170                 wine_dbgstr_rect(&dst_rect));
 171     }
 172
 173     return wined3d_surface_blt(dst_surface, &dst_rect, src_surface, &src_rect, 0, NULL, WINED3D_TEXF_POINT);
 174 }
 175
 176 HRESULT CDECL wined3d_swapchain_get_back_buffer(const struct wined3d_swapchain *swapchain,
 177         UINT back_buffer_idx, enum wined3d_backbuffer_type type, struct wined3d_surface **back_buffer)
 178 {
 179     TRACE("swapchain %p, back_buffer_idx %u, type %#x, back_buffer %p.\n",
 180             swapchain, back_buffer_idx, type, back_buffer);
 181
 182     /* Return invalid if there is no backbuffer array, otherwise it will
 183      * crash when ddraw is used (there swapchain->back_buffers is always
 184      * NULL). We need this because this function is called from
 185      * stateblock_init_default_state() to get the default scissorrect
 186      * dimensions. */
 187     if (!swapchain->back_buffers || back_buffer_idx >= swapchain->desc.backbuffer_count)
 188     {
 189         WARN("Invalid back buffer index.\n");
 190         /* Native d3d9 doesn't set NULL here, just as wine's d3d9. But set it
 191          * here in wined3d to avoid problems in other libs. */
 192         *back_buffer = NULL;
 193         return WINED3DERR_INVALIDCALL;
 194     }
 195
 196     *back_buffer = swapchain->back_buffers[back_buffer_idx];
 197     if (*back_buffer)
 198         wined3d_surface_incref(*back_buffer);
 199
 200     TRACE("Returning back buffer %p.\n", *back_buffer);
 201
 202     return WINED3D_OK;
 203 }
 204
 205 HRESULT CDECL wined3d_swapchain_get_raster_status(const struct wined3d_swapchain *swapchain,
 206         struct wined3d_raster_status *raster_status)
 207 {
 208     static BOOL warned;
 209     LARGE_INTEGER counter, freq_per_sec;
 210     LONGLONG freq_per_frame, freq_per_line;
 211     struct wined3d_display_mode mode;
 212
 213     /* No OpenGL equivalent */
 214     if (!warned)
 215     {
 216         FIXME("swapchain %p, raster_status %p semi-stub!\n", swapchain, raster_status);
 217         warned = TRUE;
 218     }
 219
 220     /* Obtaining the raster status is a widely implemented but optional
 221      * feature. When this method returns OK StarCraft 2 expects the
 222      * raster_status->InVBlank value to actually change over time.
 223      * And Endless Alice Crysis doesn't care even if this method fails.
 224      * Thus this method returns OK and fakes raster_status by
 225      * QueryPerformanceCounter. */
 226
 227     if (!QueryPerformanceCounter(&counter) || !QueryPerformanceFrequency(&freq_per_sec))
 228         return WINED3DERR_INVALIDCALL;
 229
 230     if (FAILED(wined3d_swapchain_get_display_mode(swapchain, &mode)))
 231         return WINED3DERR_INVALIDCALL;
 232     if (mode.refresh_rate == DEFAULT_REFRESH_RATE)
 233         mode.refresh_rate = 60;
 234
 235     freq_per_frame = freq_per_sec.QuadPart / mode.refresh_rate;
 236     /* Assume 20 scan lines in the vertical blank */
 237     freq_per_line = freq_per_frame / (mode.height + 20);
 238     raster_status->scan_line = (counter.QuadPart % freq_per_frame) / freq_per_line;
 239     if (raster_status->scan_line < mode.height)
 240         raster_status->in_vblank = FALSE;
 241     else
 242     {
 243         raster_status->scan_line = 0;
 244         raster_status->in_vblank = TRUE;
 245     }
 246     TRACE("Returning fake value, in_vblank %u, scan_line %u.\n",
 247           raster_status->in_vblank, raster_status->scan_line);
 248     return WINED3D_OK;
 249 }
 250
 251 HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain,
 252         struct wined3d_display_mode *mode)
 253 {
 254     HRESULT hr;
 255
 256     TRACE("swapchain %p, mode %p.\n", swapchain, mode);
 257
 258     hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d, swapchain->device->adapter->ordinal, mode);
 259
 260     TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
 261             mode->width, mode->height, mode->refresh_rate, debug_d3dformat(mode->format_id));
 262
 263     return hr;
 264 }
 265
 266 struct wined3d_device * CDECL wined3d_swapchain_get_device(const struct wined3d_swapchain *swapchain)
 267 {
 268     TRACE("swapchain %p.\n", swapchain);
 269
 270     return swapchain->device;
 271 }
 272
 273 HRESULT CDECL wined3d_swapchain_get_desc(const struct wined3d_swapchain *swapchain,
 274         struct wined3d_swapchain_desc *desc)
 275 {
 276     TRACE("swapchain %p, desc %p.\n", swapchain, desc);
 277
 278     *desc = swapchain->desc;
 279
 280     return WINED3D_OK;
 281 }
 282
 283 HRESULT CDECL wined3d_swapchain_set_gamma_ramp(const struct wined3d_swapchain *swapchain,
 284         DWORD flags, const struct wined3d_gamma_ramp *ramp)
 285 {
 286     HDC dc;
 287
 288     TRACE("swapchain %p, flags %#x, ramp %p.\n", swapchain, flags, ramp);
 289
 290     if (flags)
 291         FIXME("Ignoring flags %#x.\n", flags);
 292
 293     dc = GetDC(swapchain->device_window);
 294     SetDeviceGammaRamp(dc, (void *)ramp);
 295     ReleaseDC(swapchain->device_window, dc);
 296
 297     return WINED3D_OK;
 298 }
 299
 300 HRESULT CDECL wined3d_swapchain_get_gamma_ramp(const struct wined3d_swapchain *swapchain,
 301         struct wined3d_gamma_ramp *ramp)
 302 {
 303     HDC dc;
 304
 305     TRACE("swapchain %p, ramp %p.\n", swapchain, ramp);
 306
 307     dc = GetDC(swapchain->device_window);
 308     GetDeviceGammaRamp(dc, ramp);
 309     ReleaseDC(swapchain->device_window, dc);
 310
 311     return WINED3D_OK;
 312 }
 313
 314 /* A GL context is provided by the caller */
 315 static void swapchain_blit(const struct wined3d_swapchain *swapchain,
 316         struct wined3d_context *context, const RECT *src_rect, const RECT *dst_rect)
 317 {
 318     struct wined3d_surface *backbuffer = swapchain->back_buffers[0];
 319     UINT src_w = src_rect->right - src_rect->left;
 320     UINT src_h = src_rect->bottom - src_rect->top;
 321     GLenum gl_filter;
 322     const struct wined3d_gl_info *gl_info = context->gl_info;
 323     RECT win_rect;
 324     UINT win_h;
 325
 326     TRACE("swapchain %p, context %p, src_rect %s, dst_rect %s.\n",
 327             swapchain, context, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect));
 328
 329     if (src_w == dst_rect->right - dst_rect->left && src_h == dst_rect->bottom - dst_rect->top)
 330         gl_filter = GL_NEAREST;
 331     else
 332         gl_filter = GL_LINEAR;
 333
 334     GetClientRect(swapchain->win_handle, &win_rect);
 335     win_h = win_rect.bottom - win_rect.top;
 336
 337     if (gl_info->fbo_ops.glBlitFramebuffer && is_identity_fixup(backbuffer->resource.format->color_fixup))
 338     {
 339         DWORD location = SFLAG_INTEXTURE;
 340
 341         if (backbuffer->resource.multisample_type)
 342         {
 343             location = SFLAG_INRB_RESOLVED;
 344             surface_load_location(backbuffer, location, NULL);
 345         }
 346
 347         ENTER_GL();
 348         context_apply_fbo_state_blit(context, GL_READ_FRAMEBUFFER, backbuffer, NULL, location);
 349         glReadBuffer(GL_COLOR_ATTACHMENT0);
 350         context_check_fbo_status(context, GL_READ_FRAMEBUFFER);
 351
 352         context_apply_fbo_state_blit(context, GL_DRAW_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 353         context_set_draw_buffer(context, GL_BACK);
 354         context_invalidate_state(context, STATE_FRAMEBUFFER);
 355
 356         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 357         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
 358         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
 359         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
 360         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
 361
 362         glDisable(GL_SCISSOR_TEST);
 363         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
 364
 365         /* Note that the texture is upside down */
 366         gl_info->fbo_ops.glBlitFramebuffer(src_rect->left, src_rect->top, src_rect->right, src_rect->bottom,
 367                 dst_rect->left, win_h - dst_rect->top, dst_rect->right, win_h - dst_rect->bottom,
 368                 GL_COLOR_BUFFER_BIT, gl_filter);
 369         checkGLcall("Swapchain present blit(EXT_framebuffer_blit)\n");
 370         LEAVE_GL();
 371     }
 372     else
 373     {
 374         struct wined3d_device *device = swapchain->device;
 375         struct wined3d_context *context2;
 376         float tex_left = src_rect->left;
 377         float tex_top = src_rect->top;
 378         float tex_right = src_rect->right;
 379         float tex_bottom = src_rect->bottom;
 380
 381         context2 = context_acquire(device, swapchain->back_buffers[0]);
 382         context_apply_blit_state(context2, device);
 383
 384         if (backbuffer->flags & SFLAG_NORMCOORD)
 385         {
 386             tex_left /= src_w;
 387             tex_right /= src_w;
 388             tex_top /= src_h;
 389             tex_bottom /= src_h;
 390         }
 391
 392         if (is_complex_fixup(backbuffer->resource.format->color_fixup))
 393             gl_filter = GL_NEAREST;
 394
 395         ENTER_GL();
 396         context_apply_fbo_state_blit(context2, GL_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 397
 398         /* Set up the texture. The surface is not in a wined3d_texture
 399          * container, so there are no D3D texture settings to dirtify. */
 400         device->blitter->set_shader(device->blit_priv, context2, backbuffer);
 401         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MIN_FILTER, gl_filter);
 402         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MAG_FILTER, gl_filter);
 403
 404         context_set_draw_buffer(context, GL_BACK);
 405
 406         /* Set the viewport to the destination rectandle, disable any projection
 407          * transformation set up by context_apply_blit_state(), and draw a
 408          * (-1,-1)-(1,1) quad.
 409          *
 410          * Back up viewport and matrix to avoid breaking last_was_blit
 411          *
 412          * Note that context_apply_blit_state() set up viewport and ortho to
 413          * match the surface size - we want the GL drawable(=window) size. */
 414         glPushAttrib(GL_VIEWPORT_BIT);
 415         glViewport(dst_rect->left, win_h - dst_rect->bottom, dst_rect->right, win_h - dst_rect->top);
 416         glMatrixMode(GL_PROJECTION);
 417         glPushMatrix();
 418         glLoadIdentity();
 419
 420         glBegin(GL_QUADS);
 421             /* bottom left */
 422             glTexCoord2f(tex_left, tex_bottom);
 423             glVertex2i(-1, -1);
 424
 425             /* top left */
 426             glTexCoord2f(tex_left, tex_top);
 427             glVertex2i(-1, 1);
 428
 429             /* top right */
 430             glTexCoord2f(tex_right, tex_top);
 431             glVertex2i(1, 1);
 432
 433             /* bottom right */
 434             glTexCoord2f(tex_right, tex_bottom);
 435             glVertex2i(1, -1);
 436         glEnd();
 437
 438         glPopMatrix();
 439         glPopAttrib();
 440
 441         device->blitter->unset_shader(context->gl_info);
 442         checkGLcall("Swapchain present blit(manual)\n");
 443         LEAVE_GL();
 444
 445         context_release(context2);
 446     }
 447 }
 448
 449 static HRESULT swapchain_gl_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 450         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 451 {
 452     const struct wined3d_fb_state *fb = &swapchain->device->fb;
 453     const struct wined3d_gl_info *gl_info;
 454     struct wined3d_context *context;
 455     RECT src_rect, dst_rect;
 456     BOOL render_to_fbo;
 457
 458     context = context_acquire(swapchain->device, swapchain->back_buffers[0]);
 459     if (!context->valid)
 460     {
 461         context_release(context);
 462         WARN("Invalid context, skipping present.\n");
 463         return WINED3D_OK;
 464     }
 465
 466     gl_info = context->gl_info;
 467
 468     /* Render the cursor onto the back buffer, using our nifty directdraw blitting code :-) */
 469     if (swapchain->device->bCursorVisible &&
 470         swapchain->device->cursorTexture &&
 471         !swapchain->device->hardwareCursor)
 472     {
 473         struct wined3d_surface cursor;
 474         RECT destRect =
 475         {
 476             swapchain->device->xScreenSpace - swapchain->device->xHotSpot,
 477             swapchain->device->yScreenSpace - swapchain->device->yHotSpot,
 478             swapchain->device->xScreenSpace + swapchain->device->cursorWidth - swapchain->device->xHotSpot,
 479             swapchain->device->yScreenSpace + swapchain->device->cursorHeight - swapchain->device->yHotSpot,
 480         };
 481         TRACE("Rendering the cursor. Creating fake surface at %p\n", &cursor);
 482         /* Build a fake surface to call the Blitting code. It is not possible to use the interface passed by
 483          * the application because we are only supposed to copy the information out. Using a fake surface
 484          * allows to use the Blitting engine and avoid copying the whole texture -> render target blitting code.
 485          */
 486         memset(&cursor, 0, sizeof(cursor));
 487         cursor.resource.ref = 1;
 488         cursor.resource.device = swapchain->device;
 489         cursor.resource.pool = WINED3D_POOL_SCRATCH;
 490         cursor.resource.format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
 491         cursor.resource.type = WINED3D_RTYPE_SURFACE;
 492         cursor.texture_name = swapchain->device->cursorTexture;
 493         cursor.texture_target = GL_TEXTURE_2D;
 494         cursor.texture_level = 0;
 495         cursor.resource.width = swapchain->device->cursorWidth;
 496         cursor.resource.height = swapchain->device->cursorHeight;
 497         /* The cursor must have pow2 sizes */
 498         cursor.pow2Width = cursor.resource.width;
 499         cursor.pow2Height = cursor.resource.height;
 500         /* The surface is in the texture */
 501         cursor.flags |= SFLAG_INTEXTURE;
 502         /* DDBLT_KEYSRC will cause BltOverride to enable the alpha test with GL_NOTEQUAL, 0.0,
 503          * which is exactly what we want :-)
 504          */
 505         if (swapchain->desc.windowed)
 506             MapWindowPoints(NULL, swapchain->win_handle, (POINT *)&destRect, 2);
 507         wined3d_surface_blt(swapchain->back_buffers[0], &destRect,
 508                 &cursor, NULL, WINEDDBLT_KEYSRC, NULL, WINED3D_TEXF_POINT);
 509     }
 510
 511     if (swapchain->device->logo_surface)
 512     {
 513         struct wined3d_surface *src_surface = swapchain->device->logo_surface;
 514         RECT rect = {0, 0, src_surface->resource.width, src_surface->resource.height};
 515
 516         /* Blit the logo into the upper left corner of the drawable. */
 517         wined3d_surface_blt(swapchain->back_buffers[0], &rect, src_surface, &rect,
 518                  WINEDDBLT_KEYSRC, NULL, WINED3D_TEXF_POINT);
 519     }
 520
 521     TRACE("Presenting HDC %p.\n", context->hdc);
 522
 523     render_to_fbo = swapchain->render_to_fbo;
 524
 525     if (src_rect_in)
 526     {
 527         src_rect = *src_rect_in;
 528         if (!render_to_fbo && (src_rect.left || src_rect.top
 529                 || src_rect.right != swapchain->desc.backbuffer_width
 530                 || src_rect.bottom != swapchain->desc.backbuffer_height))
 531         {
 532             render_to_fbo = TRUE;
 533         }
 534     }
 535     else
 536     {
 537         src_rect.left = 0;
 538         src_rect.top = 0;
 539         src_rect.right = swapchain->desc.backbuffer_width;
 540         src_rect.bottom = swapchain->desc.backbuffer_height;
 541     }
 542
 543     if (dst_rect_in)
 544         dst_rect = *dst_rect_in;
 545     else
 546         GetClientRect(swapchain->win_handle, &dst_rect);
 547
 548     if (!render_to_fbo && (dst_rect.left || dst_rect.top
 549             || dst_rect.right != swapchain->desc.backbuffer_width
 550             || dst_rect.bottom != swapchain->desc.backbuffer_height))
 551         render_to_fbo = TRUE;
 552
 553     /* Rendering to a window of different size, presenting partial rectangles,
 554      * or rendering to a different window needs help from FBO_blit or a textured
 555      * draw. Render the swapchain to a FBO in the future.
 556      *
 557      * Note that FBO_blit from the backbuffer to the frontbuffer cannot solve
 558      * all these issues - this fails if the window is smaller than the backbuffer.
 559      */
 560     if (!swapchain->render_to_fbo && render_to_fbo && wined3d_settings.offscreen_rendering_mode == ORM_FBO)
 561     {
 562         surface_load_location(swapchain->back_buffers[0], SFLAG_INTEXTURE, NULL);
 563         surface_modify_location(swapchain->back_buffers[0], SFLAG_INDRAWABLE, FALSE);
 564         swapchain->render_to_fbo = TRUE;
 565         swapchain_update_draw_bindings(swapchain);
 566     }
 567
 568     if (swapchain->render_to_fbo)
 569     {
 570         /* This codepath should only be hit with the COPY swapeffect. Otherwise a backbuffer-
 571          * window size mismatch is impossible(fullscreen) and src and dst rectangles are
 572          * not allowed(they need the COPY swapeffect)
 573          *
 574          * The DISCARD swap effect is ok as well since any backbuffer content is allowed after
 575          * the swap. */
 576         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 577             FIXME("Render-to-fbo with WINED3D_SWAP_EFFECT_FLIP\n");
 578
 579         swapchain_blit(swapchain, context, &src_rect, &dst_rect);
 580     }
 581
 582     if (swapchain->num_contexts > 1)
 583         wglFinish();
 584     SwapBuffers(context->hdc); /* TODO: cycle through the swapchain buffers */
 585
 586     TRACE("SwapBuffers called, Starting new frame\n");
 587     /* FPS support */
 588     if (TRACE_ON(fps))
 589     {
 590         DWORD time = GetTickCount();
 591         ++swapchain->frames;
 592
 593         /* every 1.5 seconds */
 594         if (time - swapchain->prev_time > 1500)
 595         {
 596             TRACE_(fps)("%p @ approx %.2ffps\n",
 597                     swapchain, 1000.0 * swapchain->frames / (time - swapchain->prev_time));
 598             swapchain->prev_time = time;
 599             swapchain->frames = 0;
 600         }
 601     }
 602
 603     /* This is disabled, but the code left in for debug purposes.
 604      *
 605      * Since we're allowed to modify the new back buffer on a D3DSWAPEFFECT_DISCARD flip,
 606      * we can clear it with some ugly color to make bad drawing visible and ease debugging.
 607      * The Debug runtime does the same on Windows. However, a few games do not redraw the
 608      * screen properly, like Max Payne 2, which leaves a few pixels undefined.
 609      *
 610      * Tests show that the content of the back buffer after a discard flip is indeed not
 611      * reliable, so no game can depend on the exact content. However, it resembles the
 612      * old contents in some way, for example by showing fragments at other locations. In
 613      * general, the color theme is still intact. So Max payne, which draws rather dark scenes
 614      * gets a dark background image. If we clear it with a bright ugly color, the game's
 615      * bug shows up much more than it does on Windows, and the players see single pixels
 616      * with wrong colors.
 617      * (The Max Payne bug has been confirmed on Windows with the debug runtime) */
 618     if (FALSE && swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_DISCARD)
 619     {
 620         static const struct wined3d_color cyan = {0.0f, 1.0f, 1.0f, 1.0f};
 621
 622         TRACE("Clearing the color buffer with cyan color\n");
 623
 624         wined3d_device_clear(swapchain->device, 0, NULL,
 625                 WINED3DCLEAR_TARGET, &cyan, 1.0f, 0);
 626     }
 627
 628     if (!swapchain->render_to_fbo && ((swapchain->front_buffer->flags & SFLAG_INSYSMEM)
 629             || (swapchain->back_buffers[0]->flags & SFLAG_INSYSMEM)))
 630     {
 631         /* Both memory copies of the surfaces are ok, flip them around too instead of dirtifying
 632          * Doesn't work with render_to_fbo because we're not flipping
 633          */
 634         struct wined3d_surface *front = swapchain->front_buffer;
 635         struct wined3d_surface *back = swapchain->back_buffers[0];
 636
 637         if(front->resource.size == back->resource.size) {
 638             DWORD fbflags;
 639             flip_surface(front, back);
 640
 641             /* Tell the front buffer surface that is has been modified. However,
 642              * the other locations were preserved during that, so keep the flags.
 643              * This serves to update the emulated overlay, if any. */
 644             fbflags = front->flags;
 645             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 646             front->flags = fbflags;
 647         }
 648         else
 649         {
 650             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 651             surface_modify_location(back, SFLAG_INDRAWABLE, TRUE);
 652         }
 653     }
 654     else
 655     {
 656         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 657         /* If the swapeffect is DISCARD, the back buffer is undefined. That means the SYSMEM
 658          * and INTEXTURE copies can keep their old content if they have any defined content.
 659          * If the swapeffect is COPY, the content remains the same. If it is FLIP however,
 660          * the texture / sysmem copy needs to be reloaded from the drawable
 661          */
 662         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 663             surface_modify_location(swapchain->back_buffers[0], swapchain->back_buffers[0]->draw_binding, TRUE);
 664     }
 665
 666     if (fb->depth_stencil)
 667     {
 668         if (swapchain->desc.flags & WINED3DPRESENTFLAG_DISCARD_DEPTHSTENCIL
 669                 || fb->depth_stencil->flags & SFLAG_DISCARD)
 670         {
 671             surface_modify_ds_location(fb->depth_stencil, SFLAG_DISCARDED,
 672                     fb->depth_stencil->resource.width,
 673                     fb->depth_stencil->resource.height);
 674             if (fb->depth_stencil == swapchain->device->onscreen_depth_stencil)
 675             {
 676                 wined3d_surface_decref(swapchain->device->onscreen_depth_stencil);
 677                 swapchain->device->onscreen_depth_stencil = NULL;
 678             }
 679         }
 680     }
 681
 682     context_release(context);
 683
 684     TRACE("returning\n");
 685     return WINED3D_OK;
 686 }
 687
 688 static const struct wined3d_swapchain_ops swapchain_gl_ops =
 689 {
 690     swapchain_gl_present,
 691 };
 692
 693 /* Helper function that blits the front buffer contents to the target window. */
 694 void x11_copy_to_screen(const struct wined3d_swapchain *swapchain, const RECT *rect)
 695 {
 696     const struct wined3d_surface *front;
 697     POINT offset = {0, 0};
 698     HDC src_dc, dst_dc;
 699     RECT draw_rect;
 700     HWND window;
 701
 702     TRACE("swapchain %p, rect %s.\n", swapchain, wine_dbgstr_rect(rect));
 703
 704     front = swapchain->front_buffer;
 705     if (!(front->resource.usage & WINED3DUSAGE_RENDERTARGET))
 706         return;
 707
 708     if (front->flags & SFLAG_LOCKED)
 709         ERR("Trying to blit a mapped surface.\n");
 710
 711     TRACE("Copying surface %p to screen.\n", front);
 712
 713     src_dc = front->hDC;
 714     window = swapchain->win_handle;
 715     dst_dc = GetDCEx(window, 0, DCX_CLIPSIBLINGS | DCX_CACHE);
 716
 717     /* Front buffer coordinates are screen coordinates. Map them to the
 718      * destination window if not fullscreened. */
 719     if (swapchain->desc.windowed)
 720         ClientToScreen(window, &offset);
 721
 722     TRACE("offset %s.\n", wine_dbgstr_point(&offset));
 723
 724     draw_rect.left = 0;
 725     draw_rect.right = front->resource.width;
 726     draw_rect.top = 0;
 727     draw_rect.bottom = front->resource.height;
 728
 729     if (rect)
 730         IntersectRect(&draw_rect, &draw_rect, rect);
 731
 732     BitBlt(dst_dc, draw_rect.left - offset.x, draw_rect.top - offset.y,
 733             draw_rect.right - draw_rect.left, draw_rect.bottom - draw_rect.top,
 734             src_dc, draw_rect.left, draw_rect.top, SRCCOPY);
 735     ReleaseDC(window, dst_dc);
 736 }
 737
 738 static HRESULT swapchain_gdi_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 739         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 740 {
 741     struct wined3d_surface *front, *back;
 742
 743     if (!swapchain->back_buffers)
 744     {
 745         WARN("Swapchain doesn't have a backbuffer, returning WINED3DERR_INVALIDCALL\n");
 746         return WINED3DERR_INVALIDCALL;
 747     }
 748     front = swapchain->front_buffer;
 749     back = swapchain->back_buffers[0];
 750
 751     /* Flip the DC. */
 752     {
 753         HDC tmp;
 754         tmp = front->hDC;
 755         front->hDC = back->hDC;
 756         back->hDC = tmp;
 757     }
 758
 759     /* Flip the DIBsection. */
 760     {
 761         HBITMAP tmp;
 762         tmp = front->dib.DIBsection;
 763         front->dib.DIBsection = back->dib.DIBsection;
 764         back->dib.DIBsection = tmp;
 765     }
 766
 767     /* Flip the surface data. */
 768     {
 769         void *tmp;
 770
 771         tmp = front->dib.bitmap_data;
 772         front->dib.bitmap_data = back->dib.bitmap_data;
 773         back->dib.bitmap_data = tmp;
 774
 775         tmp = front->resource.allocatedMemory;
 776         front->resource.allocatedMemory = back->resource.allocatedMemory;
 777         back->resource.allocatedMemory = tmp;
 778
 779         if (front->resource.heapMemory)
 780             ERR("GDI Surface %p has heap memory allocated.\n", front);
 781
 782         if (back->resource.heapMemory)
 783             ERR("GDI Surface %p has heap memory allocated.\n", back);
 784     }
 785
 786     /* FPS support */
 787     if (TRACE_ON(fps))
 788     {
 789         static LONG prev_time, frames;
 790         DWORD time = GetTickCount();
 791
 792         ++frames;
 793
 794         /* every 1.5 seconds */
 795         if (time - prev_time > 1500)
 796         {
 797             TRACE_(fps)("@ approx %.2ffps\n", 1000.0 * frames / (time - prev_time));
 798             prev_time = time;
 799             frames = 0;
 800         }
 801     }
 802
 803     x11_copy_to_screen(swapchain, NULL);
 804
 805     return WINED3D_OK;
 806 }
 807
 808 static const struct wined3d_swapchain_ops swapchain_gdi_ops =
 809 {
 810     swapchain_gdi_present,
 811 };
 812
 813 void swapchain_update_render_to_fbo(struct wined3d_swapchain *swapchain)
 814 {
 815     RECT client_rect;
 816
 817     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
 818         return;
 819
 820     if (!swapchain->desc.backbuffer_count)
 821     {
 822         TRACE("Single buffered rendering.\n");
 823         swapchain->render_to_fbo = FALSE;
 824         return;
 825     }
 826
 827     GetClientRect(swapchain->win_handle, &client_rect);
 828
 829     TRACE("Backbuffer %ux%u, window %ux%u.\n",
 830             swapchain->desc.backbuffer_width,
 831             swapchain->desc.backbuffer_height,
 832             client_rect.right, client_rect.bottom);
 833     TRACE("Multisample type %#x, quality %#x.\n",
 834             swapchain->desc.multisample_type,
 835             swapchain->desc.multisample_quality);
 836
 837     if (!wined3d_settings.always_offscreen && !swapchain->desc.multisample_type
 838             && swapchain->desc.backbuffer_width == client_rect.right
 839             && swapchain->desc.backbuffer_height == client_rect.bottom)
 840     {
 841         TRACE("Backbuffer dimensions match window dimensions, rendering onscreen.\n");
 842         swapchain->render_to_fbo = FALSE;
 843         return;
 844     }
 845
 846     TRACE("Rendering to FBO.\n");
 847     swapchain->render_to_fbo = TRUE;
 848 }
 849
 850 /* Do not call while under the GL lock. */
 851 static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, enum wined3d_surface_type surface_type,
 852         struct wined3d_device *device, struct wined3d_swapchain_desc *desc,
 853         void *parent, const struct wined3d_parent_ops *parent_ops)
 854 {
 855     const struct wined3d_adapter *adapter = device->adapter;
 856     const struct wined3d_format *format;
 857     struct wined3d_display_mode mode;
 858     BOOL displaymode_set = FALSE;
 859     RECT client_rect;
 860     HWND window;
 861     HRESULT hr;
 862     UINT i;
 863
 864     if (desc->backbuffer_count > WINED3DPRESENT_BACK_BUFFER_MAX)
 865     {
 866         FIXME("The application requested %u back buffers, this is not supported.\n",
 867                 desc->backbuffer_count);
 868         return WINED3DERR_INVALIDCALL;
 869     }
 870
 871     if (desc->backbuffer_count > 1)
 872     {
 873         FIXME("The application requested more than one back buffer, this is not properly supported.\n"
 874                 "Please configure the application to use double buffering (1 back buffer) if possible.\n");
 875     }
 876
 877     switch (surface_type)
 878     {
 879         case WINED3D_SURFACE_TYPE_GDI:
 880             swapchain->swapchain_ops = &swapchain_gdi_ops;
 881             break;
 882
 883         case WINED3D_SURFACE_TYPE_OPENGL:
 884             swapchain->swapchain_ops = &swapchain_gl_ops;
 885             break;
 886
 887         default:
 888             ERR("Invalid surface type %#x.\n", surface_type);
 889             return WINED3DERR_INVALIDCALL;
 890     }
 891
 892     window = desc->device_window ? desc->device_window : device->create_parms.focus_window;
 893
 894     swapchain->device = device;
 895     swapchain->parent = parent;
 896     swapchain->parent_ops = parent_ops;
 897     swapchain->ref = 1;
 898     swapchain->win_handle = window;
 899     swapchain->device_window = window;
 900
 901     wined3d_get_adapter_display_mode(device->wined3d, adapter->ordinal, &mode);
 902     swapchain->orig_width = mode.width;
 903     swapchain->orig_height = mode.height;
 904     swapchain->orig_fmt = mode.format_id;
 905     format = wined3d_get_format(&adapter->gl_info, mode.format_id);
 906
 907     GetClientRect(window, &client_rect);
 908     if (desc->windowed
 909             && (!desc->backbuffer_width || !desc->backbuffer_height
 910             || desc->backbuffer_format == WINED3DFMT_UNKNOWN))
 911     {
 912
 913         if (!desc->backbuffer_width)
 914         {
 915             desc->backbuffer_width = client_rect.right;
 916             TRACE("Updating width to %u.\n", desc->backbuffer_width);
 917         }
 918
 919         if (!desc->backbuffer_height)
 920         {
 921             desc->backbuffer_height = client_rect.bottom;
 922             TRACE("Updating height to %u.\n", desc->backbuffer_height);
 923         }
 924
 925         if (desc->backbuffer_format == WINED3DFMT_UNKNOWN)
 926         {
 927             desc->backbuffer_format = swapchain->orig_fmt;
 928             TRACE("Updating format to %s.\n", debug_d3dformat(swapchain->orig_fmt));
 929         }
 930     }
 931     swapchain->desc = *desc;
 932     swapchain_update_render_to_fbo(swapchain);
 933
 934     TRACE("Creating front buffer.\n");
 935     hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
 936             swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
 937             swapchain->desc.backbuffer_format, swapchain->desc.multisample_type,
 938             swapchain->desc.multisample_quality, TRUE /* Lockable */,
 939             &swapchain->front_buffer);
 940     if (FAILED(hr))
 941     {
 942         WARN("Failed to create front buffer, hr %#x.\n", hr);
 943         goto err;
 944     }
 945
 946     surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_SWAPCHAIN, swapchain);
 947     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 948         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 949
 950     /* MSDN says we're only allowed a single fullscreen swapchain per device,
 951      * so we should really check to see if there is a fullscreen swapchain
 952      * already. Does a single head count as full screen? */
 953
 954     if (!desc->windowed)
 955     {
 956         struct wined3d_display_mode mode;
 957
 958         /* Change the display settings */
 959         mode.width = desc->backbuffer_width;
 960         mode.height = desc->backbuffer_height;
 961         mode.format_id = desc->backbuffer_format;
 962         mode.refresh_rate = desc->refresh_rate;
 963
 964         hr = wined3d_device_set_display_mode(device, 0, &mode);
 965         if (FAILED(hr))
 966         {
 967             WARN("Failed to set display mode, hr %#x.\n", hr);
 968             goto err;
 969         }
 970         displaymode_set = TRUE;
 971     }
 972
 973     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 974     {
 975         static const enum wined3d_format_id formats[] =
 976         {
 977             WINED3DFMT_D24_UNORM_S8_UINT,
 978             WINED3DFMT_D32_UNORM,
 979             WINED3DFMT_R24_UNORM_X8_TYPELESS,
 980             WINED3DFMT_D16_UNORM,
 981             WINED3DFMT_S1_UINT_D15_UNORM
 982         };
 983
 984         const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 985
 986         swapchain->context = HeapAlloc(GetProcessHeap(), 0, sizeof(*swapchain->context));
 987         if (!swapchain->context)
 988         {
 989             ERR("Failed to create the context array.\n");
 990             hr = E_OUTOFMEMORY;
 991             goto err;
 992         }
 993         swapchain->num_contexts = 1;
 994
 995         /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
 996          * You are able to add a depth + stencil surface at a later stage when you need it.
 997          * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
 998          * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
 999          * context, need torecreate shaders, textures and other resources.
1000          *
1001          * The context manager already takes care of the state problem and for the other tasks code from Reset
1002          * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
1003          * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
1004          * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
1005          * issue needs to be fixed. */
1006         for (i = 0; i < (sizeof(formats) / sizeof(*formats)); i++)
1007         {
1008             swapchain->ds_format = wined3d_get_format(gl_info, formats[i]);
1009             swapchain->context[0] = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format);
1010             if (swapchain->context[0]) break;
1011             TRACE("Depth stencil format %s is not supported, trying next format\n",
1012                   debug_d3dformat(formats[i]));
1013         }
1014
1015         if (!swapchain->context[0])
1016         {
1017             WARN("Failed to create context.\n");
1018             hr = WINED3DERR_NOTAVAILABLE;
1019             goto err;
1020         }
1021
1022         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
1023                 && (!desc->enable_auto_depth_stencil
1024                 || swapchain->desc.auto_depth_stencil_format != swapchain->ds_format->id))
1025         {
1026             FIXME("Add OpenGL context recreation support to context_validate_onscreen_formats\n");
1027         }
1028         context_release(swapchain->context[0]);
1029     }
1030
1031     if (swapchain->desc.backbuffer_count > 0)
1032     {
1033         swapchain->back_buffers = HeapAlloc(GetProcessHeap(), 0,
1034                 sizeof(*swapchain->back_buffers) * swapchain->desc.backbuffer_count);
1035         if (!swapchain->back_buffers)
1036         {
1037             ERR("Failed to allocate backbuffer array memory.\n");
1038             hr = E_OUTOFMEMORY;
1039             goto err;
1040         }
1041
1042         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1043         {
1044             TRACE("Creating back buffer %u.\n", i);
1045             hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
1046                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1047                     swapchain->desc.backbuffer_format, swapchain->desc.multisample_type,
1048                     swapchain->desc.multisample_quality, TRUE /* Lockable */,
1049                     &swapchain->back_buffers[i]);
1050             if (FAILED(hr))
1051             {
1052                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
1053                 goto err;
1054             }
1055
1056             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
1057         }
1058     }
1059
1060     /* Swapchains share the depth/stencil buffer, so only create a single depthstencil surface. */
1061     if (desc->enable_auto_depth_stencil && surface_type == WINED3D_SURFACE_TYPE_OPENGL)
1062     {
1063         TRACE("Creating depth/stencil buffer.\n");
1064         if (!device->auto_depth_stencil)
1065         {
1066             hr = device->device_parent->ops->create_depth_stencil(device->device_parent,
1067                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1068                     swapchain->desc.auto_depth_stencil_format, swapchain->desc.multisample_type,
1069                     swapchain->desc.multisample_quality, FALSE /* FIXME: Discard */,
1070                     &device->auto_depth_stencil);
1071             if (FAILED(hr))
1072             {
1073                 WARN("Failed to create the auto depth stencil, hr %#x.\n", hr);
1074                 goto err;
1075             }
1076
1077             surface_set_container(device->auto_depth_stencil, WINED3D_CONTAINER_NONE, NULL);
1078         }
1079     }
1080
1081     wined3d_swapchain_get_gamma_ramp(swapchain, &swapchain->orig_gamma);
1082
1083     return WINED3D_OK;
1084
1085 err:
1086     if (displaymode_set)
1087     {
1088         DEVMODEW devmode;
1089
1090         ClipCursor(NULL);
1091
1092         /* Change the display settings */
1093         memset(&devmode, 0, sizeof(devmode));
1094         devmode.dmSize = sizeof(devmode);
1095         devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
1096         devmode.dmBitsPerPel = format->byte_count * CHAR_BIT;
1097         devmode.dmPelsWidth = swapchain->orig_width;
1098         devmode.dmPelsHeight = swapchain->orig_height;
1099         ChangeDisplaySettingsExW(adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);
1100     }
1101
1102     if (swapchain->back_buffers)
1103     {
1104         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1105         {
1106             if (swapchain->back_buffers[i])
1107             {
1108                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
1109                 wined3d_surface_decref(swapchain->back_buffers[i]);
1110             }
1111         }
1112         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
1113     }
1114
1115     if (swapchain->context)
1116     {
1117         if (swapchain->context[0])
1118         {
1119             context_release(swapchain->context[0]);
1120             context_destroy(device, swapchain->context[0]);
1121             swapchain->num_contexts = 0;
1122         }
1123         HeapFree(GetProcessHeap(), 0, swapchain->context);
1124     }
1125
1126     if (swapchain->front_buffer)
1127     {
1128         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
1129         wined3d_surface_decref(swapchain->front_buffer);
1130     }
1131
1132     return hr;
1133 }
1134
1135 /* Do not call while under the GL lock. */
1136 HRESULT CDECL wined3d_swapchain_create(struct wined3d_device *device,
1137         struct wined3d_swapchain_desc *desc, enum wined3d_surface_type surface_type,
1138         void *parent, const struct wined3d_parent_ops *parent_ops,
1139         struct wined3d_swapchain **swapchain)
1140 {
1141     struct wined3d_swapchain *object;
1142     HRESULT hr;
1143
1144     TRACE("device %p, desc %p, swapchain %p, parent %p, surface_type %#x.\n",
1145             device, desc, swapchain, parent, surface_type);
1146
1147     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
1148     if (!object)
1149     {
1150         ERR("Failed to allocate swapchain memory.\n");
1151         return E_OUTOFMEMORY;
1152     }
1153
1154     hr = swapchain_init(object, surface_type, device, desc, parent, parent_ops);
1155     if (FAILED(hr))
1156     {
1157         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
1158         HeapFree(GetProcessHeap(), 0, object);
1159         return hr;
1160     }
1161
1162     TRACE("Created swapchain %p.\n", object);
1163     *swapchain = object;
1164
1165     return WINED3D_OK;
1166 }
1167
1168 /* Do not call while under the GL lock. */
1169 static struct wined3d_context *swapchain_create_context(struct wined3d_swapchain *swapchain)
1170 {
1171     struct wined3d_context **newArray;
1172     struct wined3d_context *ctx;
1173
1174     TRACE("Creating a new context for swapchain %p, thread %u.\n", swapchain, GetCurrentThreadId());
1175
1176     if (!(ctx = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format)))
1177     {
1178         ERR("Failed to create a new context for the swapchain\n");
1179         return NULL;
1180     }
1181     context_release(ctx);
1182
1183     newArray = HeapAlloc(GetProcessHeap(), 0, sizeof(*newArray) * (swapchain->num_contexts + 1));
1184     if(!newArray) {
1185         ERR("Out of memory when trying to allocate a new context array\n");
1186         context_destroy(swapchain->device, ctx);
1187         return NULL;
1188     }
1189     memcpy(newArray, swapchain->context, sizeof(*newArray) * swapchain->num_contexts);
1190     HeapFree(GetProcessHeap(), 0, swapchain->context);
1191     newArray[swapchain->num_contexts] = ctx;
1192     swapchain->context = newArray;
1193     swapchain->num_contexts++;
1194
1195     TRACE("Returning context %p\n", ctx);
1196     return ctx;
1197 }
1198
1199 void swapchain_destroy_contexts(struct wined3d_swapchain *swapchain)
1200 {
1201     unsigned int i;
1202
1203     for (i = 0; i < swapchain->num_contexts; ++i)
1204     {
1205         context_destroy(swapchain->device, swapchain->context[i]);
1206     }
1207     swapchain->num_contexts = 0;
1208 }
1209
1210 struct wined3d_context *swapchain_get_context(struct wined3d_swapchain *swapchain)
1211 {
1212     DWORD tid = GetCurrentThreadId();
1213     unsigned int i;
1214
1215     for (i = 0; i < swapchain->num_contexts; ++i)
1216     {
1217         if (swapchain->context[i]->tid == tid)
1218             return swapchain->context[i];
1219     }
1220
1221     /* Create a new context for the thread */
1222     return swapchain_create_context(swapchain);
1223 }
1224
1225 void get_drawable_size_swapchain(const struct wined3d_context *context, UINT *width, UINT *height)
1226 {
1227     /* The drawable size of an onscreen drawable is the surface size.
1228      * (Actually: The window size, but the surface is created in window size) */
1229     *width = context->current_rt->resource.width;
1230     *height = context->current_rt->resource.height;
1231 }
1232
1233 HDC swapchain_get_backup_dc(struct wined3d_swapchain *swapchain)
1234 {
1235     if (!swapchain->backup_dc)
1236     {
1237         TRACE("Creating the backup window for swapchain %p.\n", swapchain);
1238
1239         if (!(swapchain->backup_wnd = CreateWindowA(WINED3D_OPENGL_WINDOW_CLASS_NAME, "WineD3D fake window",
1240                 WS_OVERLAPPEDWINDOW, 10, 10, 10, 10, NULL, NULL, NULL, NULL)))
1241         {
1242             ERR("Failed to create a window.\n");
1243             return NULL;
1244         }
1245
1246         if (!(swapchain->backup_dc = GetDC(swapchain->backup_wnd)))
1247         {
1248             ERR("Failed to get a DC.\n");
1249             DestroyWindow(swapchain->backup_wnd);
1250             swapchain->backup_wnd = NULL;
1251             return NULL;
1252         }
1253     }
1254
1255     return swapchain->backup_dc;
1256 }
1257
1258 void swapchain_update_draw_bindings(struct wined3d_swapchain *swapchain)
1259 {
1260     UINT i;
1261
1262     surface_update_draw_binding(swapchain->front_buffer);
1263
1264     for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1265     {
1266         surface_update_draw_binding(swapchain->back_buffers[i]);
1267     }
1268 }