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

   1 /*
   2  * Copyright 2002-2003 Jason Edmeades
   3  * Copyright 2002-2003 Raphael Junqueira
   4  * Copyright 2005 Oliver Stieber
   5  * Copyright 2007-2008 Stefan Dösinger for CodeWeavers
   6  * Copyright 2011 Henri Verbeet for CodeWeavers
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  */
  22
  23 #include "config.h"
  24 #include "wine/port.h"
  25 #include "wined3d_private.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(d3d);
  28 WINE_DECLARE_DEBUG_CHANNEL(fps);
  29
  30 /* Do not call while under the GL lock. */
  31 static void swapchain_cleanup(struct wined3d_swapchain *swapchain)
  32 {
  33     struct wined3d_display_mode mode;
  34     HRESULT hr;
  35     UINT i;
  36
  37     TRACE("Destroying swapchain %p.\n", swapchain);
  38
  39     wined3d_swapchain_set_gamma_ramp(swapchain, 0, &swapchain->orig_gamma);
  40
  41     /* Release the swapchain's draw buffers. Make sure swapchain->back_buffers[0]
  42      * is the last buffer to be destroyed, FindContext() depends on that. */
  43     if (swapchain->front_buffer)
  44     {
  45         if (swapchain->front_buffer->container.type == WINED3D_CONTAINER_SWAPCHAIN)
  46             surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
  47         if (wined3d_surface_decref(swapchain->front_buffer))
  48             WARN("Something's still holding the front buffer (%p).\n", swapchain->front_buffer);
  49         swapchain->front_buffer = NULL;
  50     }
  51
  52     if (swapchain->back_buffers)
  53     {
  54         i = swapchain->desc.backbuffer_count;
  55
  56         while (i--)
  57         {
  58             if (swapchain->back_buffers[i]->container.type == WINED3D_CONTAINER_SWAPCHAIN)
  59                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
  60             if (wined3d_surface_decref(swapchain->back_buffers[i]))
  61                 WARN("Something's still holding back buffer %u (%p).\n", i, swapchain->back_buffers[i]);
  62         }
  63         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
  64         swapchain->back_buffers = NULL;
  65     }
  66
  67     for (i = 0; i < swapchain->num_contexts; ++i)
  68     {
  69         context_destroy(swapchain->device, swapchain->context[i]);
  70     }
  71     HeapFree(GetProcessHeap(), 0, swapchain->context);
  72
  73     /* Restore the screen resolution if we rendered in fullscreen.
  74      * This will restore the screen resolution to what it was before creating
  75      * the swapchain. In case of d3d8 and d3d9 this will be the original
  76      * desktop resolution. In case of d3d7 this will be a NOP because ddraw
  77      * sets the resolution before starting up Direct3D, thus orig_width and
  78      * orig_height will be equal to the modes in the presentation params. */
  79     if (!swapchain->desc.windowed && swapchain->desc.auto_restore_display_mode)
  80     {
  81         mode.width = swapchain->orig_width;
  82         mode.height = swapchain->orig_height;
  83         mode.refresh_rate = 0;
  84         mode.format_id = swapchain->orig_fmt;
  85         mode.scanline_ordering = WINED3D_SCANLINE_ORDERING_UNKNOWN;
  86         if (FAILED(hr = wined3d_set_adapter_display_mode(swapchain->device->wined3d,
  87                 swapchain->device->adapter->ordinal, &mode)))
  88             ERR("Failed to restore display mode, hr %#x.\n", hr);
  89     }
  90
  91     if (swapchain->backup_dc)
  92     {
  93         TRACE("Destroying backup wined3d window %p, dc %p.\n", swapchain->backup_wnd, swapchain->backup_dc);
  94
  95         ReleaseDC(swapchain->backup_wnd, swapchain->backup_dc);
  96         DestroyWindow(swapchain->backup_wnd);
  97     }
  98 }
  99
 100 ULONG CDECL wined3d_swapchain_incref(struct wined3d_swapchain *swapchain)
 101 {
 102     ULONG refcount = InterlockedIncrement(&swapchain->ref);
 103
 104     TRACE("%p increasing refcount to %u.\n", swapchain, refcount);
 105
 106     return refcount;
 107 }
 108
 109 /* Do not call while under the GL lock. */
 110 ULONG CDECL wined3d_swapchain_decref(struct wined3d_swapchain *swapchain)
 111 {
 112     ULONG refcount = InterlockedDecrement(&swapchain->ref);
 113
 114     TRACE("%p decreasing refcount to %u.\n", swapchain, refcount);
 115
 116     if (!refcount)
 117     {
 118         swapchain_cleanup(swapchain);
 119         swapchain->parent_ops->wined3d_object_destroyed(swapchain->parent);
 120         HeapFree(GetProcessHeap(), 0, swapchain);
 121     }
 122
 123     return refcount;
 124 }
 125
 126 void * CDECL wined3d_swapchain_get_parent(const struct wined3d_swapchain *swapchain)
 127 {
 128     TRACE("swapchain %p.\n", swapchain);
 129
 130     return swapchain->parent;
 131 }
 132
 133 void CDECL wined3d_swapchain_set_window(struct wined3d_swapchain *swapchain, HWND window)
 134 {
 135     if (!window)
 136         window = swapchain->device_window;
 137     if (window == swapchain->win_handle)
 138         return;
 139
 140     TRACE("Setting swapchain %p window from %p to %p.\n",
 141             swapchain, swapchain->win_handle, window);
 142     swapchain->win_handle = window;
 143 }
 144
 145 HRESULT CDECL wined3d_swapchain_present(struct wined3d_swapchain *swapchain,
 146         const RECT *src_rect, const RECT *dst_rect, HWND dst_window_override,
 147         const RGNDATA *dirty_region, DWORD flags)
 148 {
 149     TRACE("swapchain %p, src_rect %s, dst_rect %s, dst_window_override %p, dirty_region %p, flags %#x.\n",
 150             swapchain, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect),
 151             dst_window_override, dirty_region, flags);
 152
 153     if (flags)
 154         FIXME("Ignoring flags %#x.\n", flags);
 155
 156     if (!swapchain->back_buffers)
 157     {
 158         WARN("Swapchain doesn't have a backbuffer, returning WINED3DERR_INVALIDCALL\n");
 159         return WINED3DERR_INVALIDCALL;
 160     }
 161
 162     wined3d_swapchain_set_window(swapchain, dst_window_override);
 163
 164     swapchain->swapchain_ops->swapchain_present(swapchain, src_rect, dst_rect, dirty_region, flags);
 165
 166     return WINED3D_OK;
 167 }
 168
 169 HRESULT CDECL wined3d_swapchain_get_front_buffer_data(const struct wined3d_swapchain *swapchain,
 170         struct wined3d_surface *dst_surface)
 171 {
 172     struct wined3d_surface *src_surface;
 173     RECT src_rect, dst_rect;
 174
 175     TRACE("swapchain %p, dst_surface %p.\n", swapchain, dst_surface);
 176
 177     src_surface = swapchain->front_buffer;
 178     SetRect(&src_rect, 0, 0, src_surface->resource.width, src_surface->resource.height);
 179     dst_rect = src_rect;
 180
 181     if (swapchain->desc.windowed)
 182     {
 183         MapWindowPoints(swapchain->win_handle, NULL, (POINT *)&dst_rect, 2);
 184         FIXME("Using destination rect %s in windowed mode, this is likely wrong.\n",
 185                 wine_dbgstr_rect(&dst_rect));
 186     }
 187
 188     return wined3d_surface_blt(dst_surface, &dst_rect, src_surface, &src_rect, 0, NULL, WINED3D_TEXF_POINT);
 189 }
 190
 191 struct wined3d_surface * CDECL wined3d_swapchain_get_back_buffer(const struct wined3d_swapchain *swapchain,
 192         UINT back_buffer_idx, enum wined3d_backbuffer_type type)
 193 {
 194     TRACE("swapchain %p, back_buffer_idx %u, type %#x.\n",
 195             swapchain, back_buffer_idx, type);
 196
 197     /* Return invalid if there is no backbuffer array, otherwise it will
 198      * crash when ddraw is used (there swapchain->back_buffers is always
 199      * NULL). We need this because this function is called from
 200      * stateblock_init_default_state() to get the default scissorrect
 201      * dimensions. */
 202     if (!swapchain->back_buffers || back_buffer_idx >= swapchain->desc.backbuffer_count)
 203     {
 204         WARN("Invalid back buffer index.\n");
 205         /* Native d3d9 doesn't set NULL here, just as wine's d3d9. But set it
 206          * here in wined3d to avoid problems in other libs. */
 207         return NULL;
 208     }
 209
 210     TRACE("Returning back buffer %p.\n", swapchain->back_buffers[back_buffer_idx]);
 211
 212     return swapchain->back_buffers[back_buffer_idx];
 213 }
 214
 215 HRESULT CDECL wined3d_swapchain_get_raster_status(const struct wined3d_swapchain *swapchain,
 216         struct wined3d_raster_status *raster_status)
 217 {
 218     TRACE("swapchain %p, raster_status %p.\n", swapchain, raster_status);
 219
 220     return wined3d_get_adapter_raster_status(swapchain->device->wined3d,
 221             swapchain->device->adapter->ordinal, raster_status);
 222 }
 223
 224 HRESULT CDECL wined3d_swapchain_get_display_mode(const struct wined3d_swapchain *swapchain,
 225         struct wined3d_display_mode *mode, enum wined3d_display_rotation *rotation)
 226 {
 227     HRESULT hr;
 228
 229     TRACE("swapchain %p, mode %p, rotation %p.\n", swapchain, mode, rotation);
 230
 231     hr = wined3d_get_adapter_display_mode(swapchain->device->wined3d,
 232             swapchain->device->adapter->ordinal, mode, rotation);
 233
 234     TRACE("Returning w %u, h %u, refresh rate %u, format %s.\n",
 235             mode->width, mode->height, mode->refresh_rate, debug_d3dformat(mode->format_id));
 236
 237     return hr;
 238 }
 239
 240 struct wined3d_device * CDECL wined3d_swapchain_get_device(const struct wined3d_swapchain *swapchain)
 241 {
 242     TRACE("swapchain %p.\n", swapchain);
 243
 244     return swapchain->device;
 245 }
 246
 247 void CDECL wined3d_swapchain_get_desc(const struct wined3d_swapchain *swapchain,
 248         struct wined3d_swapchain_desc *desc)
 249 {
 250     TRACE("swapchain %p, desc %p.\n", swapchain, desc);
 251
 252     *desc = swapchain->desc;
 253 }
 254
 255 HRESULT CDECL wined3d_swapchain_set_gamma_ramp(const struct wined3d_swapchain *swapchain,
 256         DWORD flags, const struct wined3d_gamma_ramp *ramp)
 257 {
 258     HDC dc;
 259
 260     TRACE("swapchain %p, flags %#x, ramp %p.\n", swapchain, flags, ramp);
 261
 262     if (flags)
 263         FIXME("Ignoring flags %#x.\n", flags);
 264
 265     dc = GetDC(swapchain->device_window);
 266     SetDeviceGammaRamp(dc, (void *)ramp);
 267     ReleaseDC(swapchain->device_window, dc);
 268
 269     return WINED3D_OK;
 270 }
 271
 272 HRESULT CDECL wined3d_swapchain_get_gamma_ramp(const struct wined3d_swapchain *swapchain,
 273         struct wined3d_gamma_ramp *ramp)
 274 {
 275     HDC dc;
 276
 277     TRACE("swapchain %p, ramp %p.\n", swapchain, ramp);
 278
 279     dc = GetDC(swapchain->device_window);
 280     GetDeviceGammaRamp(dc, ramp);
 281     ReleaseDC(swapchain->device_window, dc);
 282
 283     return WINED3D_OK;
 284 }
 285
 286 /* A GL context is provided by the caller */
 287 static void swapchain_blit(const struct wined3d_swapchain *swapchain,
 288         struct wined3d_context *context, const RECT *src_rect, const RECT *dst_rect)
 289 {
 290     struct wined3d_surface *backbuffer = swapchain->back_buffers[0];
 291     UINT src_w = src_rect->right - src_rect->left;
 292     UINT src_h = src_rect->bottom - src_rect->top;
 293     GLenum gl_filter;
 294     const struct wined3d_gl_info *gl_info = context->gl_info;
 295     RECT win_rect;
 296     UINT win_h;
 297
 298     TRACE("swapchain %p, context %p, src_rect %s, dst_rect %s.\n",
 299             swapchain, context, wine_dbgstr_rect(src_rect), wine_dbgstr_rect(dst_rect));
 300
 301     if (src_w == dst_rect->right - dst_rect->left && src_h == dst_rect->bottom - dst_rect->top)
 302         gl_filter = GL_NEAREST;
 303     else
 304         gl_filter = GL_LINEAR;
 305
 306     GetClientRect(swapchain->win_handle, &win_rect);
 307     win_h = win_rect.bottom - win_rect.top;
 308
 309     if (gl_info->fbo_ops.glBlitFramebuffer && is_identity_fixup(backbuffer->resource.format->color_fixup))
 310     {
 311         DWORD location = SFLAG_INTEXTURE;
 312
 313         if (backbuffer->resource.multisample_type)
 314         {
 315             location = SFLAG_INRB_RESOLVED;
 316             surface_load_location(backbuffer, location, NULL);
 317         }
 318
 319         ENTER_GL();
 320         context_apply_fbo_state_blit(context, GL_READ_FRAMEBUFFER, backbuffer, NULL, location);
 321         gl_info->gl_ops.gl.p_glReadBuffer(GL_COLOR_ATTACHMENT0);
 322         context_check_fbo_status(context, GL_READ_FRAMEBUFFER);
 323
 324         context_apply_fbo_state_blit(context, GL_DRAW_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 325         context_set_draw_buffer(context, GL_BACK);
 326         context_invalidate_state(context, STATE_FRAMEBUFFER);
 327
 328         gl_info->gl_ops.gl.p_glColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
 329         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE));
 330         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE1));
 331         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE2));
 332         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_COLORWRITEENABLE3));
 333
 334         gl_info->gl_ops.gl.p_glDisable(GL_SCISSOR_TEST);
 335         context_invalidate_state(context, STATE_RENDER(WINED3D_RS_SCISSORTESTENABLE));
 336
 337         /* Note that the texture is upside down */
 338         gl_info->fbo_ops.glBlitFramebuffer(src_rect->left, src_rect->top, src_rect->right, src_rect->bottom,
 339                 dst_rect->left, win_h - dst_rect->top, dst_rect->right, win_h - dst_rect->bottom,
 340                 GL_COLOR_BUFFER_BIT, gl_filter);
 341         checkGLcall("Swapchain present blit(EXT_framebuffer_blit)\n");
 342         LEAVE_GL();
 343     }
 344     else
 345     {
 346         struct wined3d_device *device = swapchain->device;
 347         struct wined3d_context *context2;
 348         float tex_left = src_rect->left;
 349         float tex_top = src_rect->top;
 350         float tex_right = src_rect->right;
 351         float tex_bottom = src_rect->bottom;
 352
 353         context2 = context_acquire(device, swapchain->back_buffers[0]);
 354         context_apply_blit_state(context2, device);
 355
 356         if (backbuffer->flags & SFLAG_NORMCOORD)
 357         {
 358             tex_left /= src_w;
 359             tex_right /= src_w;
 360             tex_top /= src_h;
 361             tex_bottom /= src_h;
 362         }
 363
 364         if (is_complex_fixup(backbuffer->resource.format->color_fixup))
 365             gl_filter = GL_NEAREST;
 366
 367         ENTER_GL();
 368         context_apply_fbo_state_blit(context2, GL_FRAMEBUFFER, swapchain->front_buffer, NULL, SFLAG_INDRAWABLE);
 369
 370         /* Set up the texture. The surface is not in a wined3d_texture
 371          * container, so there are no D3D texture settings to dirtify. */
 372         device->blitter->set_shader(device->blit_priv, context2, backbuffer);
 373         gl_info->gl_ops.gl.p_glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MIN_FILTER, gl_filter);
 374         gl_info->gl_ops.gl.p_glTexParameteri(backbuffer->texture_target, GL_TEXTURE_MAG_FILTER, gl_filter);
 375
 376         context_set_draw_buffer(context, GL_BACK);
 377
 378         /* Set the viewport to the destination rectandle, disable any projection
 379          * transformation set up by context_apply_blit_state(), and draw a
 380          * (-1,-1)-(1,1) quad.
 381          *
 382          * Back up viewport and matrix to avoid breaking last_was_blit
 383          *
 384          * Note that context_apply_blit_state() set up viewport and ortho to
 385          * match the surface size - we want the GL drawable(=window) size. */
 386         gl_info->gl_ops.gl.p_glPushAttrib(GL_VIEWPORT_BIT);
 387         gl_info->gl_ops.gl.p_glViewport(dst_rect->left, win_h - dst_rect->bottom,
 388                 dst_rect->right, win_h - dst_rect->top);
 389         gl_info->gl_ops.gl.p_glMatrixMode(GL_PROJECTION);
 390         gl_info->gl_ops.gl.p_glPushMatrix();
 391         gl_info->gl_ops.gl.p_glLoadIdentity();
 392
 393         gl_info->gl_ops.gl.p_glBegin(GL_QUADS);
 394             /* bottom left */
 395             gl_info->gl_ops.gl.p_glTexCoord2f(tex_left, tex_bottom);
 396             gl_info->gl_ops.gl.p_glVertex2i(-1, -1);
 397
 398             /* top left */
 399             gl_info->gl_ops.gl.p_glTexCoord2f(tex_left, tex_top);
 400             gl_info->gl_ops.gl.p_glVertex2i(-1, 1);
 401
 402             /* top right */
 403             gl_info->gl_ops.gl.p_glTexCoord2f(tex_right, tex_top);
 404             gl_info->gl_ops.gl.p_glVertex2i(1, 1);
 405
 406             /* bottom right */
 407             gl_info->gl_ops.gl.p_glTexCoord2f(tex_right, tex_bottom);
 408             gl_info->gl_ops.gl.p_glVertex2i(1, -1);
 409         gl_info->gl_ops.gl.p_glEnd();
 410
 411         gl_info->gl_ops.gl.p_glPopMatrix();
 412         gl_info->gl_ops.gl.p_glPopAttrib();
 413
 414         device->blitter->unset_shader(context->gl_info);
 415         checkGLcall("Swapchain present blit(manual)\n");
 416         LEAVE_GL();
 417
 418         context_release(context2);
 419     }
 420 }
 421
 422 static void swapchain_gl_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 423         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 424 {
 425     struct wined3d_surface *back_buffer = swapchain->back_buffers[0];
 426     const struct wined3d_fb_state *fb = &swapchain->device->fb;
 427     const struct wined3d_gl_info *gl_info;
 428     struct wined3d_context *context;
 429     RECT src_rect, dst_rect;
 430     BOOL render_to_fbo;
 431
 432     context = context_acquire(swapchain->device, back_buffer);
 433     if (!context->valid)
 434     {
 435         context_release(context);
 436         WARN("Invalid context, skipping present.\n");
 437         return;
 438     }
 439
 440     gl_info = context->gl_info;
 441
 442     /* Render the cursor onto the back buffer, using our nifty directdraw blitting code :-) */
 443     if (swapchain->device->bCursorVisible &&
 444         swapchain->device->cursorTexture &&
 445         !swapchain->device->hardwareCursor)
 446     {
 447         struct wined3d_surface cursor;
 448         RECT destRect =
 449         {
 450             swapchain->device->xScreenSpace - swapchain->device->xHotSpot,
 451             swapchain->device->yScreenSpace - swapchain->device->yHotSpot,
 452             swapchain->device->xScreenSpace + swapchain->device->cursorWidth - swapchain->device->xHotSpot,
 453             swapchain->device->yScreenSpace + swapchain->device->cursorHeight - swapchain->device->yHotSpot,
 454         };
 455         TRACE("Rendering the cursor. Creating fake surface at %p\n", &cursor);
 456         /* Build a fake surface to call the Blitting code. It is not possible to use the interface passed by
 457          * the application because we are only supposed to copy the information out. Using a fake surface
 458          * allows us to use the Blitting engine and avoid copying the whole texture -> render target blitting code.
 459          */
 460         memset(&cursor, 0, sizeof(cursor));
 461         cursor.resource.ref = 1;
 462         cursor.resource.device = swapchain->device;
 463         cursor.resource.pool = WINED3D_POOL_SCRATCH;
 464         cursor.resource.format = wined3d_get_format(gl_info, WINED3DFMT_B8G8R8A8_UNORM);
 465         cursor.resource.type = WINED3D_RTYPE_SURFACE;
 466         cursor.texture_name = swapchain->device->cursorTexture;
 467         cursor.texture_target = GL_TEXTURE_2D;
 468         cursor.texture_level = 0;
 469         cursor.resource.width = swapchain->device->cursorWidth;
 470         cursor.resource.height = swapchain->device->cursorHeight;
 471         /* The cursor must have pow2 sizes */
 472         cursor.pow2Width = cursor.resource.width;
 473         cursor.pow2Height = cursor.resource.height;
 474         /* The surface is in the texture */
 475         cursor.flags |= SFLAG_INTEXTURE;
 476         /* DDBLT_KEYSRC will cause BltOverride to enable the alpha test with GL_NOTEQUAL, 0.0,
 477          * which is exactly what we want :-)
 478          */
 479         if (swapchain->desc.windowed)
 480             MapWindowPoints(NULL, swapchain->win_handle, (POINT *)&destRect, 2);
 481         wined3d_surface_blt(back_buffer, &destRect, &cursor, NULL, WINEDDBLT_KEYSRC,
 482                 NULL, WINED3D_TEXF_POINT);
 483     }
 484
 485     if (swapchain->device->logo_surface)
 486     {
 487         struct wined3d_surface *src_surface = swapchain->device->logo_surface;
 488         RECT rect = {0, 0, src_surface->resource.width, src_surface->resource.height};
 489
 490         /* Blit the logo into the upper left corner of the drawable. */
 491         wined3d_surface_blt(back_buffer, &rect, src_surface, &rect, WINEDDBLT_KEYSRC,
 492                 NULL, WINED3D_TEXF_POINT);
 493     }
 494
 495     TRACE("Presenting HDC %p.\n", context->hdc);
 496
 497     render_to_fbo = swapchain->render_to_fbo;
 498
 499     if (src_rect_in)
 500     {
 501         src_rect = *src_rect_in;
 502         if (!render_to_fbo && (src_rect.left || src_rect.top
 503                 || src_rect.right != swapchain->desc.backbuffer_width
 504                 || src_rect.bottom != swapchain->desc.backbuffer_height))
 505         {
 506             render_to_fbo = TRUE;
 507         }
 508     }
 509     else
 510     {
 511         src_rect.left = 0;
 512         src_rect.top = 0;
 513         src_rect.right = swapchain->desc.backbuffer_width;
 514         src_rect.bottom = swapchain->desc.backbuffer_height;
 515     }
 516
 517     if (dst_rect_in)
 518         dst_rect = *dst_rect_in;
 519     else
 520         GetClientRect(swapchain->win_handle, &dst_rect);
 521
 522     if (!render_to_fbo && (dst_rect.left || dst_rect.top
 523             || dst_rect.right != swapchain->desc.backbuffer_width
 524             || dst_rect.bottom != swapchain->desc.backbuffer_height))
 525         render_to_fbo = TRUE;
 526
 527     /* Rendering to a window of different size, presenting partial rectangles,
 528      * or rendering to a different window needs help from FBO_blit or a textured
 529      * draw. Render the swapchain to a FBO in the future.
 530      *
 531      * Note that FBO_blit from the backbuffer to the frontbuffer cannot solve
 532      * all these issues - this fails if the window is smaller than the backbuffer.
 533      */
 534     if (!swapchain->render_to_fbo && render_to_fbo && wined3d_settings.offscreen_rendering_mode == ORM_FBO)
 535     {
 536         surface_load_location(back_buffer, SFLAG_INTEXTURE, NULL);
 537         surface_modify_location(back_buffer, SFLAG_INDRAWABLE, FALSE);
 538         swapchain->render_to_fbo = TRUE;
 539         swapchain_update_draw_bindings(swapchain);
 540     }
 541     else
 542     {
 543         surface_load_location(back_buffer, back_buffer->draw_binding, NULL);
 544     }
 545
 546     if (swapchain->render_to_fbo)
 547     {
 548         /* This codepath should only be hit with the COPY swapeffect. Otherwise a backbuffer-
 549          * window size mismatch is impossible(fullscreen) and src and dst rectangles are
 550          * not allowed(they need the COPY swapeffect)
 551          *
 552          * The DISCARD swap effect is ok as well since any backbuffer content is allowed after
 553          * the swap. */
 554         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 555             FIXME("Render-to-fbo with WINED3D_SWAP_EFFECT_FLIP\n");
 556
 557         swapchain_blit(swapchain, context, &src_rect, &dst_rect);
 558     }
 559
 560     if (swapchain->num_contexts > 1)
 561         gl_info->gl_ops.gl.p_glFinish();
 562     SwapBuffers(context->hdc); /* TODO: cycle through the swapchain buffers */
 563
 564     TRACE("SwapBuffers called, Starting new frame\n");
 565     /* FPS support */
 566     if (TRACE_ON(fps))
 567     {
 568         DWORD time = GetTickCount();
 569         ++swapchain->frames;
 570
 571         /* every 1.5 seconds */
 572         if (time - swapchain->prev_time > 1500)
 573         {
 574             TRACE_(fps)("%p @ approx %.2ffps\n",
 575                     swapchain, 1000.0 * swapchain->frames / (time - swapchain->prev_time));
 576             swapchain->prev_time = time;
 577             swapchain->frames = 0;
 578         }
 579     }
 580
 581     /* This is disabled, but the code left in for debug purposes.
 582      *
 583      * Since we're allowed to modify the new back buffer on a D3DSWAPEFFECT_DISCARD flip,
 584      * we can clear it with some ugly color to make bad drawing visible and ease debugging.
 585      * The Debug runtime does the same on Windows. However, a few games do not redraw the
 586      * screen properly, like Max Payne 2, which leaves a few pixels undefined.
 587      *
 588      * Tests show that the content of the back buffer after a discard flip is indeed not
 589      * reliable, so no game can depend on the exact content. However, it resembles the
 590      * old contents in some way, for example by showing fragments at other locations. In
 591      * general, the color theme is still intact. So Max payne, which draws rather dark scenes
 592      * gets a dark background image. If we clear it with a bright ugly color, the game's
 593      * bug shows up much more than it does on Windows, and the players see single pixels
 594      * with wrong colors.
 595      * (The Max Payne bug has been confirmed on Windows with the debug runtime) */
 596     if (FALSE && swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_DISCARD)
 597     {
 598         static const struct wined3d_color cyan = {0.0f, 1.0f, 1.0f, 1.0f};
 599
 600         TRACE("Clearing the color buffer with cyan color\n");
 601
 602         wined3d_device_clear(swapchain->device, 0, NULL,
 603                 WINED3DCLEAR_TARGET, &cyan, 1.0f, 0);
 604     }
 605
 606     if (!swapchain->render_to_fbo && ((swapchain->front_buffer->flags & SFLAG_INSYSMEM)
 607             || (back_buffer->flags & SFLAG_INSYSMEM)))
 608     {
 609         /* Both memory copies of the surfaces are ok, flip them around too instead of dirtifying
 610          * Doesn't work with render_to_fbo because we're not flipping
 611          */
 612         struct wined3d_surface *front = swapchain->front_buffer;
 613
 614         if (front->resource.size == back_buffer->resource.size)
 615         {
 616             DWORD fbflags;
 617             flip_surface(front, back_buffer);
 618
 619             /* Tell the front buffer surface that is has been modified. However,
 620              * the other locations were preserved during that, so keep the flags.
 621              * This serves to update the emulated overlay, if any. */
 622             fbflags = front->flags;
 623             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 624             front->flags = fbflags;
 625         }
 626         else
 627         {
 628             surface_modify_location(front, SFLAG_INDRAWABLE, TRUE);
 629             surface_modify_location(back_buffer, SFLAG_INDRAWABLE, TRUE);
 630         }
 631     }
 632     else
 633     {
 634         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 635         /* If the swapeffect is DISCARD, the back buffer is undefined. That means the SYSMEM
 636          * and INTEXTURE copies can keep their old content if they have any defined content.
 637          * If the swapeffect is COPY, the content remains the same. If it is FLIP however,
 638          * the texture / sysmem copy needs to be reloaded from the drawable
 639          */
 640         if (swapchain->desc.swap_effect == WINED3D_SWAP_EFFECT_FLIP)
 641             surface_modify_location(back_buffer, back_buffer->draw_binding, TRUE);
 642     }
 643
 644     if (fb->depth_stencil)
 645     {
 646         if (swapchain->desc.flags & WINED3DPRESENTFLAG_DISCARD_DEPTHSTENCIL
 647                 || fb->depth_stencil->flags & SFLAG_DISCARD)
 648         {
 649             surface_modify_ds_location(fb->depth_stencil, SFLAG_DISCARDED,
 650                     fb->depth_stencil->resource.width,
 651                     fb->depth_stencil->resource.height);
 652             if (fb->depth_stencil == swapchain->device->onscreen_depth_stencil)
 653             {
 654                 wined3d_surface_decref(swapchain->device->onscreen_depth_stencil);
 655                 swapchain->device->onscreen_depth_stencil = NULL;
 656             }
 657         }
 658     }
 659
 660     context_release(context);
 661 }
 662
 663 static const struct wined3d_swapchain_ops swapchain_gl_ops =
 664 {
 665     swapchain_gl_present,
 666 };
 667
 668 /* Helper function that blits the front buffer contents to the target window. */
 669 void x11_copy_to_screen(const struct wined3d_swapchain *swapchain, const RECT *rect)
 670 {
 671     const struct wined3d_surface *front;
 672     POINT offset = {0, 0};
 673     HDC src_dc, dst_dc;
 674     RECT draw_rect;
 675     HWND window;
 676
 677     TRACE("swapchain %p, rect %s.\n", swapchain, wine_dbgstr_rect(rect));
 678
 679     front = swapchain->front_buffer;
 680     if (!(front->resource.usage & WINED3DUSAGE_RENDERTARGET))
 681         return;
 682
 683     if (front->resource.map_count)
 684         ERR("Trying to blit a mapped surface.\n");
 685
 686     TRACE("Copying surface %p to screen.\n", front);
 687
 688     src_dc = front->hDC;
 689     window = swapchain->win_handle;
 690     dst_dc = GetDCEx(window, 0, DCX_CLIPSIBLINGS | DCX_CACHE);
 691
 692     /* Front buffer coordinates are screen coordinates. Map them to the
 693      * destination window if not fullscreened. */
 694     if (swapchain->desc.windowed)
 695         ClientToScreen(window, &offset);
 696
 697     TRACE("offset %s.\n", wine_dbgstr_point(&offset));
 698
 699     draw_rect.left = 0;
 700     draw_rect.right = front->resource.width;
 701     draw_rect.top = 0;
 702     draw_rect.bottom = front->resource.height;
 703
 704     if (rect)
 705         IntersectRect(&draw_rect, &draw_rect, rect);
 706
 707     BitBlt(dst_dc, draw_rect.left - offset.x, draw_rect.top - offset.y,
 708             draw_rect.right - draw_rect.left, draw_rect.bottom - draw_rect.top,
 709             src_dc, draw_rect.left, draw_rect.top, SRCCOPY);
 710     ReleaseDC(window, dst_dc);
 711 }
 712
 713 static void swapchain_gdi_present(struct wined3d_swapchain *swapchain, const RECT *src_rect_in,
 714         const RECT *dst_rect_in, const RGNDATA *dirty_region, DWORD flags)
 715 {
 716     struct wined3d_surface *front, *back;
 717
 718     front = swapchain->front_buffer;
 719     back = swapchain->back_buffers[0];
 720
 721     /* Flip the DC. */
 722     {
 723         HDC tmp;
 724         tmp = front->hDC;
 725         front->hDC = back->hDC;
 726         back->hDC = tmp;
 727     }
 728
 729     /* Flip the DIBsection. */
 730     {
 731         HBITMAP tmp;
 732         tmp = front->dib.DIBsection;
 733         front->dib.DIBsection = back->dib.DIBsection;
 734         back->dib.DIBsection = tmp;
 735     }
 736
 737     /* Flip the surface data. */
 738     {
 739         void *tmp;
 740
 741         tmp = front->dib.bitmap_data;
 742         front->dib.bitmap_data = back->dib.bitmap_data;
 743         back->dib.bitmap_data = tmp;
 744
 745         tmp = front->resource.allocatedMemory;
 746         front->resource.allocatedMemory = back->resource.allocatedMemory;
 747         back->resource.allocatedMemory = tmp;
 748
 749         if (front->resource.heapMemory)
 750             ERR("GDI Surface %p has heap memory allocated.\n", front);
 751
 752         if (back->resource.heapMemory)
 753             ERR("GDI Surface %p has heap memory allocated.\n", back);
 754     }
 755
 756     /* FPS support */
 757     if (TRACE_ON(fps))
 758     {
 759         static LONG prev_time, frames;
 760         DWORD time = GetTickCount();
 761
 762         ++frames;
 763
 764         /* every 1.5 seconds */
 765         if (time - prev_time > 1500)
 766         {
 767             TRACE_(fps)("@ approx %.2ffps\n", 1000.0 * frames / (time - prev_time));
 768             prev_time = time;
 769             frames = 0;
 770         }
 771     }
 772
 773     x11_copy_to_screen(swapchain, NULL);
 774 }
 775
 776 static const struct wined3d_swapchain_ops swapchain_gdi_ops =
 777 {
 778     swapchain_gdi_present,
 779 };
 780
 781 void swapchain_update_render_to_fbo(struct wined3d_swapchain *swapchain)
 782 {
 783     RECT client_rect;
 784
 785     if (wined3d_settings.offscreen_rendering_mode != ORM_FBO)
 786         return;
 787
 788     if (!swapchain->desc.backbuffer_count)
 789     {
 790         TRACE("Single buffered rendering.\n");
 791         swapchain->render_to_fbo = FALSE;
 792         return;
 793     }
 794
 795     GetClientRect(swapchain->win_handle, &client_rect);
 796
 797     TRACE("Backbuffer %ux%u, window %ux%u.\n",
 798             swapchain->desc.backbuffer_width,
 799             swapchain->desc.backbuffer_height,
 800             client_rect.right, client_rect.bottom);
 801     TRACE("Multisample type %#x, quality %#x.\n",
 802             swapchain->desc.multisample_type,
 803             swapchain->desc.multisample_quality);
 804
 805     if (!wined3d_settings.always_offscreen && !swapchain->desc.multisample_type
 806             && swapchain->desc.backbuffer_width == client_rect.right
 807             && swapchain->desc.backbuffer_height == client_rect.bottom)
 808     {
 809         TRACE("Backbuffer dimensions match window dimensions, rendering onscreen.\n");
 810         swapchain->render_to_fbo = FALSE;
 811         return;
 812     }
 813
 814     TRACE("Rendering to FBO.\n");
 815     swapchain->render_to_fbo = TRUE;
 816 }
 817
 818 /* Do not call while under the GL lock. */
 819 static HRESULT swapchain_init(struct wined3d_swapchain *swapchain, enum wined3d_surface_type surface_type,
 820         struct wined3d_device *device, struct wined3d_swapchain_desc *desc,
 821         void *parent, const struct wined3d_parent_ops *parent_ops)
 822 {
 823     const struct wined3d_adapter *adapter = device->adapter;
 824     const struct wined3d_format *format;
 825     struct wined3d_display_mode mode;
 826     BOOL displaymode_set = FALSE;
 827     RECT client_rect;
 828     HWND window;
 829     HRESULT hr;
 830     UINT i;
 831
 832     if (desc->backbuffer_count > WINED3DPRESENT_BACK_BUFFER_MAX)
 833     {
 834         FIXME("The application requested %u back buffers, this is not supported.\n",
 835                 desc->backbuffer_count);
 836         return WINED3DERR_INVALIDCALL;
 837     }
 838
 839     if (desc->backbuffer_count > 1)
 840     {
 841         FIXME("The application requested more than one back buffer, this is not properly supported.\n"
 842                 "Please configure the application to use double buffering (1 back buffer) if possible.\n");
 843     }
 844
 845     switch (surface_type)
 846     {
 847         case WINED3D_SURFACE_TYPE_GDI:
 848             swapchain->swapchain_ops = &swapchain_gdi_ops;
 849             break;
 850
 851         case WINED3D_SURFACE_TYPE_OPENGL:
 852             swapchain->swapchain_ops = &swapchain_gl_ops;
 853             break;
 854
 855         default:
 856             ERR("Invalid surface type %#x.\n", surface_type);
 857             return WINED3DERR_INVALIDCALL;
 858     }
 859
 860     window = desc->device_window ? desc->device_window : device->create_parms.focus_window;
 861
 862     swapchain->device = device;
 863     swapchain->parent = parent;
 864     swapchain->parent_ops = parent_ops;
 865     swapchain->ref = 1;
 866     swapchain->win_handle = window;
 867     swapchain->device_window = window;
 868
 869     wined3d_get_adapter_display_mode(device->wined3d, adapter->ordinal, &mode, NULL);
 870     swapchain->orig_width = mode.width;
 871     swapchain->orig_height = mode.height;
 872     swapchain->orig_fmt = mode.format_id;
 873     format = wined3d_get_format(&adapter->gl_info, mode.format_id);
 874
 875     GetClientRect(window, &client_rect);
 876     if (desc->windowed
 877             && (!desc->backbuffer_width || !desc->backbuffer_height
 878             || desc->backbuffer_format == WINED3DFMT_UNKNOWN))
 879     {
 880
 881         if (!desc->backbuffer_width)
 882         {
 883             desc->backbuffer_width = client_rect.right;
 884             TRACE("Updating width to %u.\n", desc->backbuffer_width);
 885         }
 886
 887         if (!desc->backbuffer_height)
 888         {
 889             desc->backbuffer_height = client_rect.bottom;
 890             TRACE("Updating height to %u.\n", desc->backbuffer_height);
 891         }
 892
 893         if (desc->backbuffer_format == WINED3DFMT_UNKNOWN)
 894         {
 895             desc->backbuffer_format = swapchain->orig_fmt;
 896             TRACE("Updating format to %s.\n", debug_d3dformat(swapchain->orig_fmt));
 897         }
 898     }
 899     swapchain->desc = *desc;
 900     swapchain_update_render_to_fbo(swapchain);
 901
 902     TRACE("Creating front buffer.\n");
 903     if (FAILED(hr = device->device_parent->ops->create_swapchain_surface(device->device_parent, parent,
 904             swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
 905             swapchain->desc.backbuffer_format, WINED3DUSAGE_RENDERTARGET,
 906             swapchain->desc.multisample_type, swapchain->desc.multisample_quality,
 907             &swapchain->front_buffer)))
 908     {
 909         WARN("Failed to create front buffer, hr %#x.\n", hr);
 910         goto err;
 911     }
 912
 913     if (swapchain->front_buffer->container.type == WINED3D_CONTAINER_NONE)
 914         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_SWAPCHAIN, swapchain);
 915     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 916         surface_modify_location(swapchain->front_buffer, SFLAG_INDRAWABLE, TRUE);
 917
 918     /* MSDN says we're only allowed a single fullscreen swapchain per device,
 919      * so we should really check to see if there is a fullscreen swapchain
 920      * already. Does a single head count as full screen? */
 921
 922     if (!desc->windowed)
 923     {
 924         struct wined3d_display_mode mode;
 925
 926         /* Change the display settings */
 927         mode.width = desc->backbuffer_width;
 928         mode.height = desc->backbuffer_height;
 929         mode.format_id = desc->backbuffer_format;
 930         mode.refresh_rate = desc->refresh_rate;
 931         mode.scanline_ordering = WINED3D_SCANLINE_ORDERING_UNKNOWN;
 932
 933         if (FAILED(hr = wined3d_set_adapter_display_mode(device->wined3d, device->adapter->ordinal, &mode)))
 934         {
 935             WARN("Failed to set display mode, hr %#x.\n", hr);
 936             goto err;
 937         }
 938         displaymode_set = TRUE;
 939     }
 940
 941     if (surface_type == WINED3D_SURFACE_TYPE_OPENGL)
 942     {
 943         static const enum wined3d_format_id formats[] =
 944         {
 945             WINED3DFMT_D24_UNORM_S8_UINT,
 946             WINED3DFMT_D32_UNORM,
 947             WINED3DFMT_R24_UNORM_X8_TYPELESS,
 948             WINED3DFMT_D16_UNORM,
 949             WINED3DFMT_S1_UINT_D15_UNORM
 950         };
 951
 952         const struct wined3d_gl_info *gl_info = &device->adapter->gl_info;
 953
 954         swapchain->context = HeapAlloc(GetProcessHeap(), 0, sizeof(*swapchain->context));
 955         if (!swapchain->context)
 956         {
 957             ERR("Failed to create the context array.\n");
 958             hr = E_OUTOFMEMORY;
 959             goto err;
 960         }
 961         swapchain->num_contexts = 1;
 962
 963         /* In WGL both color, depth and stencil are features of a pixel format. In case of D3D they are separate.
 964          * You are able to add a depth + stencil surface at a later stage when you need it.
 965          * In order to support this properly in WineD3D we need the ability to recreate the opengl context and
 966          * drawable when this is required. This is very tricky as we need to reapply ALL opengl states for the new
 967          * context, need torecreate shaders, textures and other resources.
 968          *
 969          * The context manager already takes care of the state problem and for the other tasks code from Reset
 970          * can be used. These changes are way to risky during the 1.0 code freeze which is taking place right now.
 971          * Likely a lot of other new bugs will be exposed. For that reason request a depth stencil surface all the
 972          * time. It can cause a slight performance hit but fixes a lot of regressions. A fixme reminds of that this
 973          * issue needs to be fixed. */
 974         for (i = 0; i < (sizeof(formats) / sizeof(*formats)); i++)
 975         {
 976             swapchain->ds_format = wined3d_get_format(gl_info, formats[i]);
 977             swapchain->context[0] = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format);
 978             if (swapchain->context[0]) break;
 979             TRACE("Depth stencil format %s is not supported, trying next format\n",
 980                   debug_d3dformat(formats[i]));
 981         }
 982
 983         if (!swapchain->context[0])
 984         {
 985             WARN("Failed to create context.\n");
 986             hr = WINED3DERR_NOTAVAILABLE;
 987             goto err;
 988         }
 989
 990         if (wined3d_settings.offscreen_rendering_mode != ORM_FBO
 991                 && (!desc->enable_auto_depth_stencil
 992                 || swapchain->desc.auto_depth_stencil_format != swapchain->ds_format->id))
 993         {
 994             FIXME("Add OpenGL context recreation support to context_validate_onscreen_formats\n");
 995         }
 996         context_release(swapchain->context[0]);
 997     }
 998
 999     if (swapchain->desc.backbuffer_count > 0)
1000     {
1001         swapchain->back_buffers = HeapAlloc(GetProcessHeap(), 0,
1002                 sizeof(*swapchain->back_buffers) * swapchain->desc.backbuffer_count);
1003         if (!swapchain->back_buffers)
1004         {
1005             ERR("Failed to allocate backbuffer array memory.\n");
1006             hr = E_OUTOFMEMORY;
1007             goto err;
1008         }
1009
1010         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1011         {
1012             TRACE("Creating back buffer %u.\n", i);
1013             if (FAILED(hr = device->device_parent->ops->create_swapchain_surface(device->device_parent, parent,
1014                     swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1015                     swapchain->desc.backbuffer_format, WINED3DUSAGE_RENDERTARGET,
1016                     swapchain->desc.multisample_type, swapchain->desc.multisample_quality,
1017                     &swapchain->back_buffers[i])))
1018             {
1019                 WARN("Failed to create back buffer %u, hr %#x.\n", i, hr);
1020                 goto err;
1021             }
1022             if (swapchain->back_buffers[i]->container.type == WINED3D_CONTAINER_NONE)
1023                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_SWAPCHAIN, swapchain);
1024         }
1025     }
1026
1027     /* Swapchains share the depth/stencil buffer, so only create a single depthstencil surface. */
1028     if (desc->enable_auto_depth_stencil && surface_type == WINED3D_SURFACE_TYPE_OPENGL)
1029     {
1030         TRACE("Creating depth/stencil buffer.\n");
1031         if (!device->auto_depth_stencil)
1032         {
1033             if (FAILED(hr = device->device_parent->ops->create_swapchain_surface(device->device_parent,
1034                     device->device_parent, swapchain->desc.backbuffer_width, swapchain->desc.backbuffer_height,
1035                     swapchain->desc.auto_depth_stencil_format, WINED3DUSAGE_DEPTHSTENCIL,
1036                     swapchain->desc.multisample_type, swapchain->desc.multisample_quality,
1037                     &device->auto_depth_stencil)))
1038             {
1039                 WARN("Failed to create the auto depth stencil, hr %#x.\n", hr);
1040                 goto err;
1041             }
1042
1043             surface_set_container(device->auto_depth_stencil, WINED3D_CONTAINER_NONE, NULL);
1044         }
1045     }
1046
1047     wined3d_swapchain_get_gamma_ramp(swapchain, &swapchain->orig_gamma);
1048
1049     return WINED3D_OK;
1050
1051 err:
1052     if (displaymode_set)
1053     {
1054         DEVMODEW devmode;
1055
1056         ClipCursor(NULL);
1057
1058         /* Change the display settings */
1059         memset(&devmode, 0, sizeof(devmode));
1060         devmode.dmSize = sizeof(devmode);
1061         devmode.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;
1062         devmode.dmBitsPerPel = format->byte_count * CHAR_BIT;
1063         devmode.dmPelsWidth = swapchain->orig_width;
1064         devmode.dmPelsHeight = swapchain->orig_height;
1065         ChangeDisplaySettingsExW(adapter->DeviceName, &devmode, NULL, CDS_FULLSCREEN, NULL);
1066     }
1067
1068     if (swapchain->back_buffers)
1069     {
1070         for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1071         {
1072             if (swapchain->back_buffers[i])
1073             {
1074                 surface_set_container(swapchain->back_buffers[i], WINED3D_CONTAINER_NONE, NULL);
1075                 wined3d_surface_decref(swapchain->back_buffers[i]);
1076             }
1077         }
1078         HeapFree(GetProcessHeap(), 0, swapchain->back_buffers);
1079     }
1080
1081     if (swapchain->context)
1082     {
1083         if (swapchain->context[0])
1084         {
1085             context_release(swapchain->context[0]);
1086             context_destroy(device, swapchain->context[0]);
1087             swapchain->num_contexts = 0;
1088         }
1089         HeapFree(GetProcessHeap(), 0, swapchain->context);
1090     }
1091
1092     if (swapchain->front_buffer)
1093     {
1094         surface_set_container(swapchain->front_buffer, WINED3D_CONTAINER_NONE, NULL);
1095         wined3d_surface_decref(swapchain->front_buffer);
1096     }
1097
1098     return hr;
1099 }
1100
1101 /* Do not call while under the GL lock. */
1102 HRESULT CDECL wined3d_swapchain_create(struct wined3d_device *device,
1103         struct wined3d_swapchain_desc *desc, enum wined3d_surface_type surface_type,
1104         void *parent, const struct wined3d_parent_ops *parent_ops,
1105         struct wined3d_swapchain **swapchain)
1106 {
1107     struct wined3d_swapchain *object;
1108     HRESULT hr;
1109
1110     TRACE("device %p, desc %p, swapchain %p, parent %p, surface_type %#x.\n",
1111             device, desc, swapchain, parent, surface_type);
1112
1113     object = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*object));
1114     if (!object)
1115     {
1116         ERR("Failed to allocate swapchain memory.\n");
1117         return E_OUTOFMEMORY;
1118     }
1119
1120     hr = swapchain_init(object, surface_type, device, desc, parent, parent_ops);
1121     if (FAILED(hr))
1122     {
1123         WARN("Failed to initialize swapchain, hr %#x.\n", hr);
1124         HeapFree(GetProcessHeap(), 0, object);
1125         return hr;
1126     }
1127
1128     TRACE("Created swapchain %p.\n", object);
1129     *swapchain = object;
1130
1131     return WINED3D_OK;
1132 }
1133
1134 /* Do not call while under the GL lock. */
1135 static struct wined3d_context *swapchain_create_context(struct wined3d_swapchain *swapchain)
1136 {
1137     struct wined3d_context **newArray;
1138     struct wined3d_context *ctx;
1139
1140     TRACE("Creating a new context for swapchain %p, thread %u.\n", swapchain, GetCurrentThreadId());
1141
1142     if (!(ctx = context_create(swapchain, swapchain->front_buffer, swapchain->ds_format)))
1143     {
1144         ERR("Failed to create a new context for the swapchain\n");
1145         return NULL;
1146     }
1147     context_release(ctx);
1148
1149     newArray = HeapAlloc(GetProcessHeap(), 0, sizeof(*newArray) * (swapchain->num_contexts + 1));
1150     if(!newArray) {
1151         ERR("Out of memory when trying to allocate a new context array\n");
1152         context_destroy(swapchain->device, ctx);
1153         return NULL;
1154     }
1155     memcpy(newArray, swapchain->context, sizeof(*newArray) * swapchain->num_contexts);
1156     HeapFree(GetProcessHeap(), 0, swapchain->context);
1157     newArray[swapchain->num_contexts] = ctx;
1158     swapchain->context = newArray;
1159     swapchain->num_contexts++;
1160
1161     TRACE("Returning context %p\n", ctx);
1162     return ctx;
1163 }
1164
1165 void swapchain_destroy_contexts(struct wined3d_swapchain *swapchain)
1166 {
1167     unsigned int i;
1168
1169     for (i = 0; i < swapchain->num_contexts; ++i)
1170     {
1171         context_destroy(swapchain->device, swapchain->context[i]);
1172     }
1173     swapchain->num_contexts = 0;
1174 }
1175
1176 struct wined3d_context *swapchain_get_context(struct wined3d_swapchain *swapchain)
1177 {
1178     DWORD tid = GetCurrentThreadId();
1179     unsigned int i;
1180
1181     for (i = 0; i < swapchain->num_contexts; ++i)
1182     {
1183         if (swapchain->context[i]->tid == tid)
1184             return swapchain->context[i];
1185     }
1186
1187     /* Create a new context for the thread */
1188     return swapchain_create_context(swapchain);
1189 }
1190
1191 void get_drawable_size_swapchain(const struct wined3d_context *context, UINT *width, UINT *height)
1192 {
1193     /* The drawable size of an onscreen drawable is the surface size.
1194      * (Actually: The window size, but the surface is created in window size) */
1195     *width = context->current_rt->resource.width;
1196     *height = context->current_rt->resource.height;
1197 }
1198
1199 HDC swapchain_get_backup_dc(struct wined3d_swapchain *swapchain)
1200 {
1201     if (!swapchain->backup_dc)
1202     {
1203         TRACE("Creating the backup window for swapchain %p.\n", swapchain);
1204
1205         if (!(swapchain->backup_wnd = CreateWindowA(WINED3D_OPENGL_WINDOW_CLASS_NAME, "WineD3D fake window",
1206                 WS_OVERLAPPEDWINDOW, 10, 10, 10, 10, NULL, NULL, NULL, NULL)))
1207         {
1208             ERR("Failed to create a window.\n");
1209             return NULL;
1210         }
1211
1212         if (!(swapchain->backup_dc = GetDC(swapchain->backup_wnd)))
1213         {
1214             ERR("Failed to get a DC.\n");
1215             DestroyWindow(swapchain->backup_wnd);
1216             swapchain->backup_wnd = NULL;
1217             return NULL;
1218         }
1219     }
1220
1221     return swapchain->backup_dc;
1222 }
1223
1224 void swapchain_update_draw_bindings(struct wined3d_swapchain *swapchain)
1225 {
1226     UINT i;
1227
1228     surface_update_draw_binding(swapchain->front_buffer);
1229
1230     for (i = 0; i < swapchain->desc.backbuffer_count; ++i)
1231     {
1232         surface_update_draw_binding(swapchain->back_buffers[i]);
1233     }
1234 }