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     UINT i;
  35
  36     TRACE("Destroying swapchain %p.\n", swapchain);
  37
  38     wined3d_swapchain_set_gamma_ramp(swapchain, 0, &swapchain->orig_gamma);
  39
  40     /* Release the swapchain's draw buffers. Make sure swapchain->back_buffers[0]
  41      * is the last buffer to be destroyed, FindContext() depends on that. */
  42     if (swapchain->front_buffer)
  43     {
  44         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
  45         if (wined3d_surface_decref(swapchain->front_buffer))
  46             WARN("Something's still holding the front buffer (%p).\n", swapchain->front_buffer);
  47         swapchain->front_buffer = NULL;
  48     }
  49
  50     if (swapchain->back_buffers)
  51     {
  52         i = swapchain->desc.backbuffer_count;
  53
  54         while (i--)
  55         {
  56             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
  57             if (wined3d_surface_decref(swapchain->back_buffers[i]))
  58                 WARN("Something's still holding back buffer %u (%p).\n", i, swapchain->back_buffers[i]);
  59         }
  60         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
  61         swapchain->back_buffers = NULL;
  62     }
  63
  64     for (i = 0; i < swapchain->num_contexts; ++i)
  65     {
  66         context_destroy(swapchain->device, swapchain->context[i]);
  67     }
  68     HeapFree(GetProcessHeap(), 0, swapchain->context);
  69
  70     /* Restore the screen resolution if we rendered in fullscreen.
  71      * This will restore the screen resolution to what it was before creating
  72      * the swapchain. In case of d3d8 and d3d9 this will be the original
  73      * desktop resolution. In case of d3d7 this will be a NOP because ddraw
  74      * sets the resolution before starting up Direct3D, thus orig_width and
  75      * orig_height will be equal to the modes in the presentation params. */
  76     if (!swapchain->desc.windowed && swapchain->desc.auto_restore_display_mode)
  77     {
  78         mode.width = swapchain->orig_width;
  79         mode.height = swapchain->orig_height;
  80         mode.refresh_rate = 0;
  81         mode.format_id = swapchain->orig_fmt;
  82         wined3d_device_set_display_mode(swapchain->device, 0, &mode);
  83     }
  84
  85     if (swapchain->backup_dc)
  86     {
  87         TRACE("Destroying backup wined3d window %p, dc %p.\n", swapchain->backup_wnd, swapchain->backup_dc);
  88
  89         ReleaseDC(swapchain->backup_wnd, swapchain->backup_dc);
  90         DestroyWindow(swapchain->backup_wnd);
  91     }
  92 }
  93
  94 ULONG CDECL wined3d_swapchain_incref(struct wined3d_swapchain *swapchain)
  95 {
  96     ULONG refcount = InterlockedIncrement(&swapchain->ref);
  97
  98     TRACE("%p increasing refcount to %u.\n", swapchain, refcount);
  99
 100     return refcount;
 101 }
 102
 103 /* Do not call while under the GL lock. */
 104 ULONG CDECL wined3d_swapchain_decref(struct wined3d_swapchain *swapchain)
 105 {
 106     ULONG refcount = InterlockedDecrement(&swapchain->ref);
 107
 108     TRACE("%p decreasing refcount to %u.\n", swapchain, refcount);
 109
 110     if (!refcount)
 111     {
 112         swapchain_cleanup(swapchain);
 113         swapchain->parent_ops->wined3d_object_destroyed(swapchain->parent);
 114         HeapFree(GetProcessHeap(), 0, swapchain);
 115     }
 116
 117     return refcount;
 118 }
 119
 120 void * CDECL wined3d_swapchain_get_parent(const struct wined3d_swapchain *swapchain)
 121 {
 122     TRACE("swapchain %p.\n", swapchain);
 123
 124     return swapchain->parent;
 125 }
 126
 127 HRESULT CDECL wined3d_swapchain_set_window(struct wined3d_swapchain *swapchain, HWND window)
 128 {
 129     if (!window)
 130         window = swapchain->device_window;
 131     if (window == swapchain->win_handle)
 132         return WINED3D_OK;
 133
 134     TRACE("Setting swapchain %p window from %p to %p.\n",
 135             swapchain, swapchain->win_handle, window);
 136     swapchain->win_handle = window;
 137
 138     return WINED3D_OK;
 139 }
 140
 141 HRESULT CDECL wined3d_swapchain_present(struct wined3d_swapchain *swapchain,
 142         const RECT *src_rect, const RECT *dst_rect, HWND dst_window_override,
 143         const RGNDATA *dirty_region, DWORD flags)
 144 {
 145     TRACE("swapchain %p, src_rect %s, dst_rect %s, dst_window_override %p, dirty_region %p, flags %#x.\n",
 146             swapchain, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect),
 147             dst_window_override, dirty_region, flags);
 148
 149     if (!swapchain->back_buffers)
 150     {
 151         WARN("Swapchain doesn't have a backbuffer, returning WINED3DERR_INVALIDCALL\n");
 152         return WINED3DERR_INVALIDCALL;
 153     }
 154
 155     wined3d_swapchain_set_window(swapchain, dst_window_override);
 156
 157     swapchain->swapchain_ops->swapchain_present(swapchain, src_rect, dst_rect, dirty_region, flags);
 158
 159     return WINED3D_OK;
 160 }
 161
 162 HRESULT CDECL wined3d_swapchain_get_front_buffer_data(const struct wined3d_swapchain *swapchain,
 163         struct wined3d_surface *dst_surface)
 164 {
 165     struct wined3d_surface *src_surface;
 166     RECT src_rect, dst_rect;
 167
 168     TRACE("swapchain %p, dst_surface %p.\n", swapchain, dst_surface);
 169
 170     src_surface = swapchain->front_buffer;
 171     SetRect(&src_rect, 0, 0, src_surface->resource.width, src_surface->resource.height);
 172     dst_rect = src_rect;
 173
 174     if (swapchain->desc.windowed)
 175     {
 176         MapWindowPoints(swapchain->win_handle, NULL, (POINT *)&dst_rect, 2);
 177         FIXME("Using destination rect %s in windowed mode, this is likely wrong.\n",
 178                 wine_dbgstr_rect(&dst_rect));
 179     }
 180
 181     return wined3d_surface_blt(dst_surface, &dst_rect, src_surface, &src_rect, 0, NULL, WINED3D_TEXF_POINT);
 182 }
 183
 184 HRESULT CDECL wined3d_swapchain_get_back_buffer(const struct wined3d_swapchain *swapchain,
 185         UINT back_buffer_idx, enum wined3d_backbuffer_type type, struct wined3d_surface **back_buffer)
 186 {
 187     TRACE("swapchain %p, back_buffer_idx %u, type %#x, back_buffer %p.\n",
 188             swapchain, back_buffer_idx, type, back_buffer);
 189
 190     /* Return invalid if there is no backbuffer array, otherwise it will
 191      * crash when ddraw is used (there swapchain->back_buffers is always
 192      * NULL). We need this because this function is called from
 193      * stateblock_init_default_state() to get the default scissorrect
 194      * dimensions. */
 195     if (!swapchain->back_buffers || back_buffer_idx >= swapchain->desc.backbuffer_count)
 196     {
 197         WARN("Invalid back buffer index.\n");
 198         /* Native d3d9 doesn't set NULL here, just as wine's d3d9. But set it
 199          * here in wined3d to avoid problems in other libs. */
 200         *back_buffer = NULL;
 201         return WINED3DERR_INVALIDCALL;
 202     }
 203
 204     *back_buffer = swapchain->back_buffers[back_buffer_idx];
 205     if (*back_buffer)
 206         wined3d_surface_incref(*back_buffer);
 207
 208     TRACE("Returning back buffer %p.\n", *back_buffer);
 209
 210     return WINED3D_OK;
 211 }
 212
 213 HRESULT CDECL wined3d_swapchain_get_raster_status(const struct wined3d_swapchain *swapchain,
 214         struct wined3d_raster_status *raster_status)
 215 {
 216     static BOOL warned;
 217     LARGE_INTEGER counter, freq_per_sec;
 218     LONGLONG freq_per_frame, freq_per_line;
 219     struct wined3d_display_mode mode;
 220
 221     /* No OpenGL equivalent */
 222     if (!warned)
 223     {
 224         FIXME("swapchain %p, raster_status %p semi-stub!\n", swapchain, raster_status);
 225         warned = TRUE;
 226     }
 227
 228     /* Obtaining the raster status is a widely implemented but optional
 229      * feature. When this method returns OK StarCraft 2 expects the
 230      * raster_status->InVBlank value to actually change over time.
 231      * And Endless Alice Crysis doesn't care even if this method fails.
 232      * Thus this method returns OK and fakes raster_status by
 233      * QueryPerformanceCounter. */
 234
 235     if (!QueryPerformanceCounter(&counter) || !QueryPerformanceFrequency(&freq_per_sec))
 236         return WINED3DERR_INVALIDCALL;
 237
 238     if (FAILED(wined3d_swapchain_get_display_mode(swapchain, &mode)))
 239         return WINED3DERR_INVALIDCALL;
 240     if (mode.refresh_rate == DEFAULT_REFRESH_RATE)
 241         mode.refresh_rate = 60;
 242
 243     freq_per_frame = freq_per_sec.QuadPart / mode.refresh_rate;
 244     /* Assume 20 scan lines in the vertical blank */
 245     freq_per_line = freq_per_frame / (mode.height + 20);
 246     raster_status->scan_line = (counter.QuadPart % freq_per_frame) / freq_per_line;
 247     if (raster_status->scan_line < mode.height)
 248         raster_status->in_vblank = FALSE;
 249     else
 250     {
 251         raster_status->scan_line = 0;
 252         raster_status->in_vblank = TRUE;
 253     }
 254     TRACE("Returning fake value, in_vblank %u, scan_line %u.\n",
 255           raster_status->in_vblank, raster_status->scan_line);
 256     return WINED3D_OK;
 257 }
 258
 259 HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain,
 260         struct wined3d_display_mode *mode)
 261 {
 262     HRESULT hr;
 263
 264     TRACE("swapchain %p, mode %p.\n", swapchain, mode);
 265
 266     hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d, swapchain->device->adapter->ordinal, mode);
 267
 268     TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
 269             mode->width, mode->height, mode->refresh_rate, debug_d3dformat(mode->format_id));
 270
 271     return hr;
 272 }
 273
 274 struct wined3d_device * CDECL wined3d_swapchain_get_device(const struct wined3d_swapchain *swapchain)
 275 {
 276     TRACE("swapchain %p.\n", swapchain);
 277
 278     return swapchain->device;
 279 }
 280
 281 HRESULT CDECL wined3d_swapchain_get_desc(const struct wined3d_swapchain *swapchain,
 282         struct wined3d_swapchain_desc *desc)
 283 {
 284     TRACE("swapchain %p, desc %p.\n", swapchain, desc);
 285
 286     *desc = swapchain->desc;
 287
 288     return WINED3D_OK;
 289 }
 290
 291 HRESULT CDECL wined3d_swapchain_set_gamma_ramp(const struct wined3d_swapchain *swapchain,
 292         DWORD flags, const struct wined3d_gamma_ramp *ramp)
 293 {
 294     HDC dc;
 295
 296     TRACE("swapchain %p, flags %#x, ramp %p.\n", swapchain, flags, ramp);
 297
 298     if (flags)
 299         FIXME("Ignoring flags %#x.\n", flags);
 300
 301     dc = GetDC(swapchain->device_window);
 302     SetDeviceGammaRamp(dc, (void *)ramp);
 303     ReleaseDC(swapchain->device_window, dc);
 304
 305     return WINED3D_OK;
 306 }
 307
 308 HRESULT CDECL wined3d_swapchain_get_gamma_ramp(const struct wined3d_swapchain *swapchain,
 309         struct wined3d_gamma_ramp *ramp)
 310 {
 311     HDC dc;
 312
 313     TRACE("swapchain %p, ramp %p.\n", swapchain, ramp);
 314
 315     dc = GetDC(swapchain->device_window);
 316     GetDeviceGammaRamp(dc, ramp);
 317     ReleaseDC(swapchain->device_window, dc);
 318
 319     return WINED3D_OK;
 320 }
 321
 322 /* A GL context is provided by the caller */
 323 static void swapchain_blit(const struct wined3d_swapchain *swapchain,
 324         struct wined3d_context *context, const RECT *src_rect, const RECT *dst_rect)
 325 {
 326     struct wined3d_surface *backbuffer = swapchain->back_buffers[0];
 327     UINT src_w = src_rect->right - src_rect->left;
 328     UINT src_h = src_rect->bottom - src_rect->top;
 329     GLenum gl_filter;
 330     const struct wined3d_gl_info *gl_info = context->gl_info;
 331     RECT win_rect;
 332     UINT win_h;
 333
 334     TRACE("swapchain %p, context %p, src_rect %s, dst_rect %s.\n",
 335             swapchain, context, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect));
 336
 337     if (src_w == dst_rect->right - dst_rect->left && src_h == dst_rect->bottom - dst_rect->top)
 338         gl_filter = GL_NEAREST;
 339     else
 340         gl_filter = GL_LINEAR;
 341
 342     GetClientRect(swapchain->win_handle, &win_rect);
 343     win_h = win_rect.bottom - win_rect.top;
 344
 345     if (gl_info->fbo_ops.glBlitFramebuffer && is_identity_fixup(backbuffer->resource.format->color_fixup))
 346     {
 347         DWORD location = SFLAG_INTEXTURE;
 348
 349         if (backbuffer->resource.multisample_type)
 350         {
 351             location = SFLAG_INRB_RESOLVED;
 352             surface_load_location(backbuffer, location, NULL);
 353         }
 354
 355         ENTER_GL();
 356         context_apply_fbo_state_blit(context, GL_READ_FRAMEBUFFER, backbuffer, NULL, location);
 357         glReadBuffer(GL_COLOR_ATTACHMENT0);
 358         context_check_fbo_status(context, GL_READ_FRAMEBUFFER);
 359
 360         context_apply_fbo_state_blit(context, GL_DRAW_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 361         context_set_draw_buffer(context, GL_BACK);
 362         context_invalidate_state(context, STATE_FRAMEBUFFER);
 363
 364         glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 365         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
 366         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
 367         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
 368         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
 369
 370         glDisable(GL_SCISSOR_TEST);
 371         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
 372
 373         /* Note that the texture is upside down */
 374         gl_info->fbo_ops.glBlitFramebuffer(src_rect->left, src_rect->top, src_rect->right, src_rect->bottom,
 375                 dst_rect->left, win_h - dst_rect->top, dst_rect->right, win_h - dst_rect->bottom,
 376                 GL_COLOR_BUFFER_BIT, gl_filter);
 377         checkGLcall("Swapchain present blit(EXT_framebuffer_blit)\n");
 378         LEAVE_GL();
 379     }
 380     else
 381     {
 382         struct wined3d_device *device = swapchain->device;
 383         struct wined3d_context *context2;
 384         float tex_left = src_rect->left;
 385         float tex_top = src_rect->top;
 386         float tex_right = src_rect->right;
 387         float tex_bottom = src_rect->bottom;
 388
 389         context2 = context_acquire(device, swapchain->back_buffers[0]);
 390         context_apply_blit_state(context2, device);
 391
 392         if (backbuffer->flags & SFLAG_NORMCOORD)
 393         {
 394             tex_left /= src_w;
 395             tex_right /= src_w;
 396             tex_top /= src_h;
 397             tex_bottom /= src_h;
 398         }
 399
 400         if (is_complex_fixup(backbuffer->resource.format->color_fixup))
 401             gl_filter = GL_NEAREST;
 402
 403         ENTER_GL();
 404         context_apply_fbo_state_blit(context2, GL_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 405
 406         /* Set up the texture. The surface is not in a wined3d_texture
 407          * container, so there are no D3D texture settings to dirtify. */
 408         device->blitter->set_shader(device->blit_priv, context2, backbuffer);
 409         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MIN_FILTER, gl_filter);
 410         glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MAG_FILTER, gl_filter);
 411
 412         context_set_draw_buffer(context, GL_BACK);
 413
 414         /* Set the viewport to the destination rectandle, disable any projection
 415          * transformation set up by context_apply_blit_state(), and draw a
 416          * (-1,-1)-(1,1) quad.
 417          *
 418          * Back up viewport and matrix to avoid breaking last_was_blit
 419          *
 420          * Note that context_apply_blit_state() set up viewport and ortho to
 421          * match the surface size - we want the GL drawable(=window) size. */
 422         glPushAttrib(GL_VIEWPORT_BIT);
 423         glViewport(dst_rect->left, win_h - dst_rect->bottom, dst_rect->right, win_h - dst_rect->top);
 424         glMatrixMode(GL_PROJECTION);
 425         glPushMatrix();
 426         glLoadIdentity();
 427
 428         glBegin(GL_QUADS);
 429             /* bottom left */
 430             glTexCoord2f(tex_left, tex_bottom);
 431             glVertex2i(-1, -1);
 432
 433             /* top left */
 434             glTexCoord2f(tex_left, tex_top);
 435             glVertex2i(-1, 1);
 436
 437             /* top right */
 438             glTexCoord2f(tex_right, tex_top);
 439             glVertex2i(1, 1);
 440
 441             /* bottom right */
 442             glTexCoord2f(tex_right, tex_bottom);
 443             glVertex2i(1, -1);
 444         glEnd();
 445
 446         glPopMatrix();
 447         glPopAttrib();
 448
 449         device->blitter->unset_shader(context->gl_info);
 450         checkGLcall("Swapchain present blit(manual)\n");
 451         LEAVE_GL();
 452
 453         context_release(context2);
 454     }
 455 }
 456
 457 static void swapchain_gl_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 458         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 459 {
 460     struct wined3d_surface *back_buffer = swapchain->back_buffers[0];
 461     const struct wined3d_fb_state *fb = &swapchain->device->fb;
 462     const struct wined3d_gl_info *gl_info;
 463     struct wined3d_context *context;
 464     RECT src_rect, dst_rect;
 465     BOOL render_to_fbo;
 466
 467     context = context_acquire(swapchain->device, back_buffer);
 468     if (!context->valid)
 469     {
 470         context_release(context);
 471         WARN("Invalid context, skipping present.\n");
 472         return;
 473     }
 474
 475     gl_info = context->gl_info;
 476
 477     /* Render the cursor onto the back buffer, using our nifty directdraw blitting code :-) */
 478     if (swapchain->device->bCursorVisible &&
 479         swapchain->device->cursorTexture &&
 480         !swapchain->device->hardwareCursor)
 481     {
 482         struct wined3d_surface cursor;
 483         RECT destRect =
 484         {
 485             swapchain->device->xScreenSpace - swapchain->device->xHotSpot,
 486             swapchain->device->yScreenSpace - swapchain->device->yHotSpot,
 487             swapchain->device->xScreenSpace + swapchain->device->cursorWidth - swapchain->device->xHotSpot,
 488             swapchain->device->yScreenSpace + swapchain->device->cursorHeight - swapchain->device->yHotSpot,
 489         };
 490         TRACE("Rendering the cursor. Creating fake surface at %p\n", &cursor);
 491         /* Build a fake surface to call the Blitting code. It is not possible to use the interface passed by
 492          * the application because we are only supposed to copy the information out. Using a fake surface
 493          * allows us to use the Blitting engine and avoid copying the whole texture -> render target blitting code.
 494          */
 495         memset(&cursor, 0, sizeof(cursor));
 496         cursor.resource.ref = 1;
 497         cursor.resource.device = swapchain->device;
 498         cursor.resource.pool = WINED3D_POOL_SCRATCH;
 499         cursor.resource.format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
 500         cursor.resource.type = WINED3D_RTYPE_SURFACE;
 501         cursor.texture_name = swapchain->device->cursorTexture;
 502         cursor.texture_target = GL_TEXTURE_2D;
 503         cursor.texture_level = 0;
 504         cursor.resource.width = swapchain->device->cursorWidth;
 505         cursor.resource.height = swapchain->device->cursorHeight;
 506         /* The cursor must have pow2 sizes */
 507         cursor.pow2Width = cursor.resource.width;
 508         cursor.pow2Height = cursor.resource.height;
 509         /* The surface is in the texture */
 510         cursor.flags |= SFLAG_INTEXTURE;
 511         /* DDBLT_KEYSRC will cause BltOverride to enable the alpha test with GL_NOTEQUAL, 0.0,
 512          * which is exactly what we want :-)
 513          */
 514         if (swapchain->desc.windowed)
 515             MapWindowPoints(NULL, swapchain->win_handle, (POINT *)&destRect, 2);
 516         wined3d_surface_blt(back_buffer, &destRect, &cursor, NULL, WINEDDBLT_KEYSRC,
 517                 NULL, WINED3D_TEXF_POINT);
 518     }
 519
 520     if (swapchain->device->logo_surface)
 521     {
 522         struct wined3d_surface *src_surface = swapchain->device->logo_surface;
 523         RECT rect = {0, 0, src_surface->resource.width, src_surface->resource.height};
 524
 525         /* Blit the logo into the upper left corner of the drawable. */
 526         wined3d_surface_blt(back_buffer, &rect, src_surface, &rect, WINEDDBLT_KEYSRC,
 527                 NULL, WINED3D_TEXF_POINT);
 528     }
 529
 530     TRACE("Presenting HDC %p.\n", context->hdc);
 531
 532     render_to_fbo = swapchain->render_to_fbo;
 533
 534     if (src_rect_in)
 535     {
 536         src_rect = *src_rect_in;
 537         if (!render_to_fbo && (src_rect.left || src_rect.top
 538                 || src_rect.right != swapchain->desc.backbuffer_width
 539                 || src_rect.bottom != swapchain->desc.backbuffer_height))
 540         {
 541             render_to_fbo = TRUE;
 542         }
 543     }
 544     else
 545     {
 546         src_rect.left = 0;
 547         src_rect.top = 0;
 548         src_rect.right = swapchain->desc.backbuffer_width;
 549         src_rect.bottom = swapchain->desc.backbuffer_height;
 550     }
 551
 552     if (dst_rect_in)
 553         dst_rect = *dst_rect_in;
 554     else
 555         GetClientRect(swapchain->win_handle, &dst_rect);
 556
 557     if (!render_to_fbo && (dst_rect.left || dst_rect.top
 558             || dst_rect.right != swapchain->desc.backbuffer_width
 559             || dst_rect.bottom != swapchain->desc.backbuffer_height))
 560         render_to_fbo = TRUE;
 561
 562     /* Rendering to a window of different size, presenting partial rectangles,
 563      * or rendering to a different window needs help from FBO_blit or a textured
 564      * draw. Render the swapchain to a FBO in the future.
 565      *
 566      * Note that FBO_blit from the backbuffer to the frontbuffer cannot solve
 567      * all these issues - this fails if the window is smaller than the backbuffer.
 568      */
 569     if (!swapchain->render_to_fbo && render_to_fbo && wined3d_settings.offscreen_rendering_mode == ORM_FBO)
 570     {
 571         surface_load_location(back_buffer, SFLAG_INTEXTURE, NULL);
 572         surface_modify_location(back_buffer, SFLAG_INDRAWABLE, FALSE);
 573         swapchain->render_to_fbo = TRUE;
 574         swapchain_update_draw_bindings(swapchain);
 575     }
 576     else
 577     {
 578         surface_load_location(back_buffer, back_buffer->draw_binding, NULL);
 579     }
 580
 581     if (swapchain->render_to_fbo)
 582     {
 583         /* This codepath should only be hit with the COPY swapeffect. Otherwise a backbuffer-
 584          * window size mismatch is impossible(fullscreen) and src and dst rectangles are
 585          * not allowed(they need the COPY swapeffect)
 586          *
 587          * The DISCARD swap effect is ok as well since any backbuffer content is allowed after
 588          * the swap. */
 589         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 590             FIXME("Render-to-fbo with WINED3D_SWAP_EFFECT_FLIP\n");
 591
 592         swapchain_blit(swapchain, context, &src_rect, &dst_rect);
 593     }
 594
 595     if (swapchain->num_contexts > 1)
 596         wglFinish();
 597     SwapBuffers(context->hdc); /* TODO: cycle through the swapchain buffers */
 598
 599     TRACE("SwapBuffers called, Starting new frame\n");
 600     /* FPS support */
 601     if (TRACE_ON(fps))
 602     {
 603         DWORD time = GetTickCount();
 604         ++swapchain->frames;
 605
 606         /* every 1.5 seconds */
 607         if (time - swapchain->prev_time > 1500)
 608         {
 609             TRACE_(fps)("%p @ approx %.2ffps\n",
 610                     swapchain, 1000.0 * swapchain->frames / (time - swapchain->prev_time));
 611             swapchain->prev_time = time;
 612             swapchain->frames = 0;
 613         }
 614     }
 615
 616     /* This is disabled, but the code left in for debug purposes.
 617      *
 618      * Since we're allowed to modify the new back buffer on a D3DSWAPEFFECT_DISCARD flip,
 619      * we can clear it with some ugly color to make bad drawing visible and ease debugging.
 620      * The Debug runtime does the same on Windows. However, a few games do not redraw the
 621      * screen properly, like Max Payne 2, which leaves a few pixels undefined.
 622      *
 623      * Tests show that the content of the back buffer after a discard flip is indeed not
 624      * reliable, so no game can depend on the exact content. However, it resembles the
 625      * old contents in some way, for example by showing fragments at other locations. In
 626      * general, the color theme is still intact. So Max payne, which draws rather dark scenes
 627      * gets a dark background image. If we clear it with a bright ugly color, the game's
 628      * bug shows up much more than it does on Windows, and the players see single pixels
 629      * with wrong colors.
 630      * (The Max Payne bug has been confirmed on Windows with the debug runtime) */
 631     if (FALSE && swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_DISCARD)
 632     {
 633         static const struct wined3d_color cyan = {0.0f, 1.0f, 1.0f, 1.0f};
 634
 635         TRACE("Clearing the color buffer with cyan color\n");
 636
 637         wined3d_device_clear(swapchain->device, 0, NULL,
 638                 WINED3DCLEAR_TARGET, &cyan, 1.0f, 0);
 639     }
 640
 641     if (!swapchain->render_to_fbo && ((swapchain->front_buffer->flags & SFLAG_INSYSMEM)
 642             || (back_buffer->flags & SFLAG_INSYSMEM)))
 643     {
 644         /* Both memory copies of the surfaces are ok, flip them around too instead of dirtifying
 645          * Doesn't work with render_to_fbo because we're not flipping
 646          */
 647         struct wined3d_surface *front = swapchain->front_buffer;
 648
 649         if (front->resource.size == back_buffer->resource.size)
 650         {
 651             DWORD fbflags;
 652             flip_surface(front, back_buffer);
 653
 654             /* Tell the front buffer surface that is has been modified. However,
 655              * the other locations were preserved during that, so keep the flags.
 656              * This serves to update the emulated overlay, if any. */
 657             fbflags = front->flags;
 658             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 659             front->flags = fbflags;
 660         }
 661         else
 662         {
 663             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 664             surface_modify_location(back_buffer, SFLAG_INDRAWABLE, TRUE);
 665         }
 666     }
 667     else
 668     {
 669         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 670         /* If the swapeffect is DISCARD, the back buffer is undefined. That means the SYSMEM
 671          * and INTEXTURE copies can keep their old content if they have any defined content.
 672          * If the swapeffect is COPY, the content remains the same. If it is FLIP however,
 673          * the texture / sysmem copy needs to be reloaded from the drawable
 674          */
 675         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 676             surface_modify_location(back_buffer, back_buffer->draw_binding, TRUE);
 677     }
 678
 679     if (fb->depth_stencil)
 680     {
 681         if (swapchain->desc.flags & WINED3DPRESENTFLAG_DISCARD_DEPTHSTENCIL
 682                 || fb->depth_stencil->flags & SFLAG_DISCARD)
 683         {
 684             surface_modify_ds_location(fb->depth_stencil, SFLAG_DISCARDED,
 685                     fb->depth_stencil->resource.width,
 686                     fb->depth_stencil->resource.height);
 687             if (fb->depth_stencil == swapchain->device->onscreen_depth_stencil)
 688             {
 689                 wined3d_surface_decref(swapchain->device->onscreen_depth_stencil);
 690                 swapchain->device->onscreen_depth_stencil = NULL;
 691             }
 692         }
 693     }
 694
 695     context_release(context);
 696 }
 697
 698 static const struct wined3d_swapchain_ops swapchain_gl_ops =
 699 {
 700     swapchain_gl_present,
 701 };
 702
 703 /* Helper function that blits the front buffer contents to the target window. */
 704 void x11_copy_to_screen(const struct wined3d_swapchain *swapchain, const RECT *rect)
 705 {
 706     const struct wined3d_surface *front;
 707     POINT offset = {0, 0};
 708     HDC src_dc, dst_dc;
 709     RECT draw_rect;
 710     HWND window;
 711
 712     TRACE("swapchain %p, rect %s.\n", swapchain, wine_dbgstr_rect(rect));
 713
 714     front = swapchain->front_buffer;
 715     if (!(front->resource.usage & WINED3DUSAGE_RENDERTARGET))
 716         return;
 717
 718     if (front->resource.map_count)
 719         ERR("Trying to blit a mapped surface.\n");
 720
 721     TRACE("Copying surface %p to screen.\n", front);
 722
 723     src_dc = front->hDC;
 724     window = swapchain->win_handle;
 725     dst_dc = GetDCEx(window, 0, DCX_CLIPSIBLINGS | DCX_CACHE);
 726
 727     /* Front buffer coordinates are screen coordinates. Map them to the
 728      * destination window if not fullscreened. */
 729     if (swapchain->desc.windowed)
 730         ClientToScreen(window, &offset);
 731
 732     TRACE("offset %s.\n", wine_dbgstr_point(&offset));
 733
 734     draw_rect.left = 0;
 735     draw_rect.right = front->resource.width;
 736     draw_rect.top = 0;
 737     draw_rect.bottom = front->resource.height;
 738
 739     if (rect)
 740         IntersectRect(&draw_rect, &draw_rect, rect);
 741
 742     BitBlt(dst_dc, draw_rect.left - offset.x, draw_rect.top - offset.y,
 743             draw_rect.right - draw_rect.left, draw_rect.bottom - draw_rect.top,
 744             src_dc, draw_rect.left, draw_rect.top, SRCCOPY);
 745     ReleaseDC(window, dst_dc);
 746 }
 747
 748 static void swapchain_gdi_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 749         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 750 {
 751     struct wined3d_surface *front, *back;
 752
 753     front = swapchain->front_buffer;
 754     back = swapchain->back_buffers[0];
 755
 756     /* Flip the DC. */
 757     {
 758         HDC tmp;
 759         tmp = front->hDC;
 760         front->hDC = back->hDC;
 761         back->hDC = tmp;
 762     }
 763
 764     /* Flip the DIBsection. */
 765     {
 766         HBITMAP tmp;
 767         tmp = front->dib.DIBsection;
 768         front->dib.DIBsection = back->dib.DIBsection;
 769         back->dib.DIBsection = tmp;
 770     }
 771
 772     /* Flip the surface data. */
 773     {
 774         void *tmp;
 775
 776         tmp = front->dib.bitmap_data;
 777         front->dib.bitmap_data = back->dib.bitmap_data;
 778         back->dib.bitmap_data = tmp;
 779
 780         tmp = front->resource.allocatedMemory;
 781         front->resource.allocatedMemory = back->resource.allocatedMemory;
 782         back->resource.allocatedMemory = tmp;
 783
 784         if (front->resource.heapMemory)
 785             ERR("GDI Surface %p has heap memory allocated.\n", front);
 786
 787         if (back->resource.heapMemory)
 788             ERR("GDI Surface %p has heap memory allocated.\n", back);
 789     }
 790
 791     /* FPS support */
 792     if (TRACE_ON(fps))
 793     {
 794         static LONG prev_time, frames;
 795         DWORD time = GetTickCount();
 796
 797         ++frames;
 798
 799         /* every 1.5 seconds */
 800         if (time - prev_time > 1500)
 801         {
 802             TRACE_(fps)("@ approx %.2ffps\n", 1000.0 * frames / (time - prev_time));
 803             prev_time = time;
 804             frames = 0;
 805         }
 806     }
 807
 808     x11_copy_to_screen(swapchain, NULL);
 809 }
 810
 811 static const struct wined3d_swapchain_ops swapchain_gdi_ops =
 812 {
 813     swapchain_gdi_present,
 814 };
 815
 816 void swapchain_update_render_to_fbo(struct wined3d_swapchain *swapchain)
 817 {
 818     RECT client_rect;
 819
 820     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
 821         return;
 822
 823     if (!swapchain->desc.backbuffer_count)
 824     {
 825         TRACE("Single buffered rendering.\n");
 826         swapchain->render_to_fbo = FALSE;
 827         return;
 828     }
 829
 830     GetClientRect(swapchain->win_handle, &client_rect);
 831
 832     TRACE("Backbuffer %ux%u, window %ux%u.\n",
 833             swapchain->desc.backbuffer_width,
 834             swapchain->desc.backbuffer_height,
 835             client_rect.right, client_rect.bottom);
 836     TRACE("Multisample type %#x, quality %#x.\n",
 837             swapchain->desc.multisample_type,
 838             swapchain->desc.multisample_quality);
 839
 840     if (!wined3d_settings.always_offscreen && !swapchain->desc.multisample_type
 841             && swapchain->desc.backbuffer_width == client_rect.right
 842             && swapchain->desc.backbuffer_height == client_rect.bottom)
 843     {
 844         TRACE("Backbuffer dimensions match window dimensions, rendering onscreen.\n");
 845         swapchain->render_to_fbo = FALSE;
 846         return;
 847     }
 848
 849     TRACE("Rendering to FBO.\n");
 850     swapchain->render_to_fbo = TRUE;
 851 }
 852
 853 /* Do not call while under the GL lock. */
 854 static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, enum wined3d_surface_type surface_type,
 855         struct wined3d_device *device, struct wined3d_swapchain_desc *desc,
 856         void *parent, const struct wined3d_parent_ops *parent_ops)
 857 {
 858     const struct wined3d_adapter *adapter = device->adapter;
 859     const struct wined3d_format *format;
 860     struct wined3d_display_mode mode;
 861     BOOL displaymode_set = FALSE;
 862     RECT client_rect;
 863     HWND window;
 864     HRESULT hr;
 865     UINT i;
 866
 867     if (desc->backbuffer_count > WINED3DPRESENT_BACK_BUFFER_MAX)
 868     {
 869         FIXME("The application requested %u back buffers, this is not supported.\n",
 870                 desc->backbuffer_count);
 871         return WINED3DERR_INVALIDCALL;
 872     }
 873
 874     if (desc->backbuffer_count > 1)
 875     {
 876         FIXME("The application requested more than one back buffer, this is not properly supported.\n"
 877                 "Please configure the application to use double buffering (1 back buffer) if possible.\n");
 878     }
 879
 880     switch (surface_type)
 881     {
 882         case WINED3D_SURFACE_TYPE_GDI:
 883             swapchain->swapchain_ops = &swapchain_gdi_ops;
 884             break;
 885
 886         case WINED3D_SURFACE_TYPE_OPENGL:
 887             swapchain->swapchain_ops = &swapchain_gl_ops;
 888             break;
 889
 890         default:
 891             ERR("Invalid surface type %#x.\n", surface_type);
 892             return WINED3DERR_INVALIDCALL;
 893     }
 894
 895     window = desc->device_window ? desc->device_window : device->create_parms.focus_window;
 896
 897     swapchain->device = device;
 898     swapchain->parent = parent;
 899     swapchain->parent_ops = parent_ops;
 900     swapchain->ref = 1;
 901     swapchain->win_handle = window;
 902     swapchain->device_window = window;
 903
 904     wined3d_get_adapter_display_mode(device->wined3d, adapter->ordinal, &mode);
 905     swapchain->orig_width = mode.width;
 906     swapchain->orig_height = mode.height;
 907     swapchain->orig_fmt = mode.format_id;
 908     format = wined3d_get_format(&adapter->gl_info, mode.format_id);
 909
 910     GetClientRect(window, &client_rect);
 911     if (desc->windowed
 912             && (!desc->backbuffer_width || !desc->backbuffer_height
 913             || desc->backbuffer_format == WINED3DFMT_UNKNOWN))
 914     {
 915
 916         if (!desc->backbuffer_width)
 917         {
 918             desc->backbuffer_width = client_rect.right;
 919             TRACE("Updating width to %u.\n", desc->backbuffer_width);
 920         }
 921
 922         if (!desc->backbuffer_height)
 923         {
 924             desc->backbuffer_height = client_rect.bottom;
 925             TRACE("Updating height to %u.\n", desc->backbuffer_height);
 926         }
 927
 928         if (desc->backbuffer_format == WINED3DFMT_UNKNOWN)
 929         {
 930             desc->backbuffer_format = swapchain->orig_fmt;
 931             TRACE("Updating format to %s.\n", debug_d3dformat(swapchain->orig_fmt));
 932         }
 933     }
 934     swapchain->desc = *desc;
 935     swapchain_update_render_to_fbo(swapchain);
 936
 937     TRACE("Creating front buffer.\n");
 938     hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
 939             swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
 940             swapchain->desc.backbuffer_format, swapchain->desc.multisample_type,
 941             swapchain->desc.multisample_quality, TRUE /* Lockable */,
 942             &swapchain->front_buffer);
 943     if (FAILED(hr))
 944     {
 945         WARN("Failed to create front buffer, hr %#x.\n", hr);
 946         goto err;
 947     }
 948
 949     surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_SWAPCHAIN, swapchain);
 950     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 951         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 952
 953     /* MSDN says we're only allowed a single fullscreen swapchain per device,
 954      * so we should really check to see if there is a fullscreen swapchain
 955      * already. Does a single head count as full screen? */
 956
 957     if (!desc->windowed)
 958     {
 959         struct wined3d_display_mode mode;
 960
 961         /* Change the display settings */
 962         mode.width = desc->backbuffer_width;
 963         mode.height = desc->backbuffer_height;
 964         mode.format_id = desc->backbuffer_format;
 965         mode.refresh_rate = desc->refresh_rate;
 966
 967         hr = wined3d_device_set_display_mode(device, 0, &mode);
 968         if (FAILED(hr))
 969         {
 970             WARN("Failed to set display mode, hr %#x.\n", hr);
 971             goto err;
 972         }
 973         displaymode_set = TRUE;
 974     }
 975
 976     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 977     {
 978         static const enum wined3d_format_id formats[] =
 979         {
 980             WINED3DFMT_D24_UNORM_S8_UINT,
 981             WINED3DFMT_D32_UNORM,
 982             WINED3DFMT_R24_UNORM_X8_TYPELESS,
 983             WINED3DFMT_D16_UNORM,
 984             WINED3DFMT_S1_UINT_D15_UNORM
 985         };
 986
 987         const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 988
 989         swapchain->context = HeapAlloc(GetProcessHeap(), 0, sizeof(*swapchain->context));
 990         if (!swapchain->context)
 991         {
 992             ERR("Failed to create the context array.\n");
 993             hr = E_OUTOFMEMORY;
 994             goto err;
 995         }
 996         swapchain->num_contexts = 1;
 997
 998         /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
 999          * You are able to add a depth + stencil surface at a later stage when you need it.
1000          * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
1001          * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
1002          * context, need torecreate shaders, textures and other resources.
1003          *
1004          * The context manager already takes care of the state problem and for the other tasks code from Reset
1005          * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
1006          * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
1007          * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
1008          * issue needs to be fixed. */
1009         for (i = 0; i < (sizeof(formats) / sizeof(*formats)); i++)
1010         {
1011             swapchain->ds_format = wined3d_get_format(gl_info, formats[i]);
1012             swapchain->context[0] = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format);
1013             if (swapchain->context[0]) break;
1014             TRACE("Depth stencil format %s is not supported, trying next format\n",
1015                   debug_d3dformat(formats[i]));
1016         }
1017
1018         if (!swapchain->context[0])
1019         {
1020             WARN("Failed to create context.\n");
1021             hr = WINED3DERR_NOTAVAILABLE;
1022             goto err;
1023         }
1024
1025         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
1026                 && (!desc->enable_auto_depth_stencil
1027                 || swapchain->desc.auto_depth_stencil_format != swapchain->ds_format->id))
1028         {
1029             FIXME("Add OpenGL context recreation support to context_validate_onscreen_formats\n");
1030         }
1031         context_release(swapchain->context[0]);
1032     }
1033
1034     if (swapchain->desc.backbuffer_count > 0)
1035     {
1036         swapchain->back_buffers = HeapAlloc(GetProcessHeap(), 0,
1037                 sizeof(*swapchain->back_buffers) * swapchain->desc.backbuffer_count);
1038         if (!swapchain->back_buffers)
1039         {
1040             ERR("Failed to allocate backbuffer array memory.\n");
1041             hr = E_OUTOFMEMORY;
1042             goto err;
1043         }
1044
1045         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1046         {
1047             TRACE("Creating back buffer %u.\n", i);
1048             hr = device->device_parent->ops->create_rendertarget(device->device_parent, parent,
1049                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1050                     swapchain->desc.backbuffer_format, swapchain->desc.multisample_type,
1051                     swapchain->desc.multisample_quality, TRUE /* Lockable */,
1052                     &swapchain->back_buffers[i]);
1053             if (FAILED(hr))
1054             {
1055                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
1056                 goto err;
1057             }
1058
1059             surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
1060         }
1061     }
1062
1063     /* Swapchains share the depth/stencil buffer, so only create a single depthstencil surface. */
1064     if (desc->enable_auto_depth_stencil && surface_type == WINED3D_SURFACE_TYPE_OPENGL)
1065     {
1066         TRACE("Creating depth/stencil buffer.\n");
1067         if (!device->auto_depth_stencil)
1068         {
1069             hr = device->device_parent->ops->create_depth_stencil(device->device_parent,
1070                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1071                     swapchain->desc.auto_depth_stencil_format, swapchain->desc.multisample_type,
1072                     swapchain->desc.multisample_quality, FALSE /* FIXME: Discard */,
1073                     &device->auto_depth_stencil);
1074             if (FAILED(hr))
1075             {
1076                 WARN("Failed to create the auto depth stencil, hr %#x.\n", hr);
1077                 goto err;
1078             }
1079
1080             surface_set_container(device->auto_depth_stencil, WINED3D_CONTAINER_NONE, NULL);
1081         }
1082     }
1083
1084     wined3d_swapchain_get_gamma_ramp(swapchain, &swapchain->orig_gamma);
1085
1086     return WINED3D_OK;
1087
1088 err:
1089     if (displaymode_set)
1090     {
1091         DEVMODEW devmode;
1092
1093         ClipCursor(NULL);
1094
1095         /* Change the display settings */
1096         memset(&devmode, 0, sizeof(devmode));
1097         devmode.dmSize = sizeof(devmode);
1098         devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
1099         devmode.dmBitsPerPel = format->byte_count * CHAR_BIT;
1100         devmode.dmPelsWidth = swapchain->orig_width;
1101         devmode.dmPelsHeight = swapchain->orig_height;
1102         ChangeDisplaySettingsExW(adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);
1103     }
1104
1105     if (swapchain->back_buffers)
1106     {
1107         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1108         {
1109             if (swapchain->back_buffers[i])
1110             {
1111                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
1112                 wined3d_surface_decref(swapchain->back_buffers[i]);
1113             }
1114         }
1115         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
1116     }
1117
1118     if (swapchain->context)
1119     {
1120         if (swapchain->context[0])
1121         {
1122             context_release(swapchain->context[0]);
1123             context_destroy(device, swapchain->context[0]);
1124             swapchain->num_contexts = 0;
1125         }
1126         HeapFree(GetProcessHeap(), 0, swapchain->context);
1127     }
1128
1129     if (swapchain->front_buffer)
1130     {
1131         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
1132         wined3d_surface_decref(swapchain->front_buffer);
1133     }
1134
1135     return hr;
1136 }
1137
1138 /* Do not call while under the GL lock. */
1139 HRESULT CDECL wined3d_swapchain_create(struct wined3d_device *device,
1140         struct wined3d_swapchain_desc *desc, enum wined3d_surface_type surface_type,
1141         void *parent, const struct wined3d_parent_ops *parent_ops,
1142         struct wined3d_swapchain **swapchain)
1143 {
1144     struct wined3d_swapchain *object;
1145     HRESULT hr;
1146
1147     TRACE("device %p, desc %p, swapchain %p, parent %p, surface_type %#x.\n",
1148             device, desc, swapchain, parent, surface_type);
1149
1150     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
1151     if (!object)
1152     {
1153         ERR("Failed to allocate swapchain memory.\n");
1154         return E_OUTOFMEMORY;
1155     }
1156
1157     hr = swapchain_init(object, surface_type, device, desc, parent, parent_ops);
1158     if (FAILED(hr))
1159     {
1160         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
1161         HeapFree(GetProcessHeap(), 0, object);
1162         return hr;
1163     }
1164
1165     TRACE("Created swapchain %p.\n", object);
1166     *swapchain = object;
1167
1168     return WINED3D_OK;
1169 }
1170
1171 /* Do not call while under the GL lock. */
1172 static struct wined3d_context *swapchain_create_context(struct wined3d_swapchain *swapchain)
1173 {
1174     struct wined3d_context **newArray;
1175     struct wined3d_context *ctx;
1176
1177     TRACE("Creating a new context for swapchain %p, thread %u.\n", swapchain, GetCurrentThreadId());
1178
1179     if (!(ctx = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format)))
1180     {
1181         ERR("Failed to create a new context for the swapchain\n");
1182         return NULL;
1183     }
1184     context_release(ctx);
1185
1186     newArray = HeapAlloc(GetProcessHeap(), 0, sizeof(*newArray) * (swapchain->num_contexts + 1));
1187     if(!newArray) {
1188         ERR("Out of memory when trying to allocate a new context array\n");
1189         context_destroy(swapchain->device, ctx);
1190         return NULL;
1191     }
1192     memcpy(newArray, swapchain->context, sizeof(*newArray) * swapchain->num_contexts);
1193     HeapFree(GetProcessHeap(), 0, swapchain->context);
1194     newArray[swapchain->num_contexts] = ctx;
1195     swapchain->context = newArray;
1196     swapchain->num_contexts++;
1197
1198     TRACE("Returning context %p\n", ctx);
1199     return ctx;
1200 }
1201
1202 void swapchain_destroy_contexts(struct wined3d_swapchain *swapchain)
1203 {
1204     unsigned int i;
1205
1206     for (i = 0; i < swapchain->num_contexts; ++i)
1207     {
1208         context_destroy(swapchain->device, swapchain->context[i]);
1209     }
1210     swapchain->num_contexts = 0;
1211 }
1212
1213 struct wined3d_context *swapchain_get_context(struct wined3d_swapchain *swapchain)
1214 {
1215     DWORD tid = GetCurrentThreadId();
1216     unsigned int i;
1217
1218     for (i = 0; i < swapchain->num_contexts; ++i)
1219     {
1220         if (swapchain->context[i]->tid == tid)
1221             return swapchain->context[i];
1222     }
1223
1224     /* Create a new context for the thread */
1225     return swapchain_create_context(swapchain);
1226 }
1227
1228 void get_drawable_size_swapchain(const struct wined3d_context *context, UINT *width, UINT *height)
1229 {
1230     /* The drawable size of an onscreen drawable is the surface size.
1231      * (Actually: The window size, but the surface is created in window size) */
1232     *width = context->current_rt->resource.width;
1233     *height = context->current_rt->resource.height;
1234 }
1235
1236 HDC swapchain_get_backup_dc(struct wined3d_swapchain *swapchain)
1237 {
1238     if (!swapchain->backup_dc)
1239     {
1240         TRACE("Creating the backup window for swapchain %p.\n", swapchain);
1241
1242         if (!(swapchain->backup_wnd = CreateWindowA(WINED3D_OPENGL_WINDOW_CLASS_NAME, "WineD3D fake window",
1243                 WS_OVERLAPPEDWINDOW, 10, 10, 10, 10, NULL, NULL, NULL, NULL)))
1244         {
1245             ERR("Failed to create a window.\n");
1246             return NULL;
1247         }
1248
1249         if (!(swapchain->backup_dc = GetDC(swapchain->backup_wnd)))
1250         {
1251             ERR("Failed to get a DC.\n");
1252             DestroyWindow(swapchain->backup_wnd);
1253             swapchain->backup_wnd = NULL;
1254             return NULL;
1255         }
1256     }
1257
1258     return swapchain->backup_dc;
1259 }
1260
1261 void swapchain_update_draw_bindings(struct wined3d_swapchain *swapchain)
1262 {
1263     UINT i;
1264
1265     surface_update_draw_binding(swapchain->front_buffer);
1266
1267     for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1268     {
1269         surface_update_draw_binding(swapchain->back_buffers[i]);
1270     }
1271 }