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  1. /**************************************************************************
  2.  *
  3.  * Copyright 2009-2010 VMware, Inc.
  4.  * All Rights Reserved.
  5.  *
  6.  * Permission is hereby granted, free of charge, to any person obtaining a
  7.  * copy of this software and associated documentation files (the
  8.  * "Software"), to deal in the Software without restriction, including
  9.  * without limitation the rights to use, copy, modify, merge, publish,
  10.  * distribute, sub license, and/or sell copies of the Software, and to
  11.  * permit persons to whom the Software is furnished to do so, subject to
  12.  * the following conditions:
  13.  *
  14.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16.  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  17.  * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
  18.  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  19.  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  20.  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  21.  *
  22.  * The above copyright notice and this permission notice (including the
  23.  * next paragraph) shall be included in all copies or substantial portions
  24.  * of the Software.
  25.  *
  26.  *
  27.  **************************************************************************/
  28.  
  29. /**
  30.  * @file
  31.  * Softpipe/LLVMpipe support.
  32.  *
  33.  * @author Jose Fonseca <jfonseca@vmware.com>
  34.  */
  35.  
  36.  
  37. #include <windows.h>
  38.  
  39. #include "util/u_debug.h"
  40. #include "stw_winsys.h"
  41. #include "gdi/gdi_sw_winsys.h"
  42.  
  43. #include "softpipe/sp_texture.h"
  44. #include "softpipe/sp_screen.h"
  45. #include "softpipe/sp_public.h"
  46.  
  47. #ifdef HAVE_LLVMPIPE
  48. #include "llvmpipe/lp_texture.h"
  49. #include "llvmpipe/lp_screen.h"
  50. #include "llvmpipe/lp_public.h"
  51. #endif
  52.  
  53.  
  54. static boolean use_llvmpipe = FALSE;
  55.  
  56.  
  57. static struct pipe_screen *
  58. gdi_screen_create(void)
  59. {
  60.    const char *default_driver;
  61.    const char *driver;
  62.    struct pipe_screen *screen = NULL;
  63.    struct sw_winsys *winsys;
  64.  
  65.    winsys = gdi_create_sw_winsys();
  66.    if(!winsys)
  67.       goto no_winsys;
  68.  
  69. #ifdef HAVE_LLVMPIPE
  70.    default_driver = "llvmpipe";
  71. #else
  72.    default_driver = "softpipe";
  73. #endif
  74.  
  75.    driver = debug_get_option("GALLIUM_DRIVER", default_driver);
  76.  
  77. #ifdef HAVE_LLVMPIPE
  78.    if (strcmp(driver, "llvmpipe") == 0) {
  79.       screen = llvmpipe_create_screen( winsys );
  80.    }
  81. #endif
  82.  
  83.    if (screen == NULL) {
  84.       screen = softpipe_create_screen( winsys );
  85.    } else {
  86.       use_llvmpipe = TRUE;
  87.    }
  88.  
  89.    if(!screen)
  90.       goto no_screen;
  91.  
  92.    return screen;
  93.    
  94. no_screen:
  95.    winsys->destroy(winsys);
  96. no_winsys:
  97.    return NULL;
  98. }
  99.  
  100.  
  101. static void
  102. gdi_present(struct pipe_screen *screen,
  103.             struct pipe_resource *res,
  104.             HDC hDC)
  105. {
  106.    /* This will fail if any interposing layer (trace, debug, etc) has
  107.     * been introduced between the state-trackers and the pipe driver.
  108.     *
  109.     * Ideally this would get replaced with a call to
  110.     * pipe_screen::flush_frontbuffer().
  111.     *
  112.     * Failing that, it may be necessary for intervening layers to wrap
  113.     * other structs such as this stw_winsys as well...
  114.     */
  115.  
  116.    struct sw_winsys *winsys = NULL;
  117.    struct sw_displaytarget *dt = NULL;
  118.  
  119. #ifdef HAVE_LLVMPIPE
  120.    if (use_llvmpipe) {
  121.       winsys = llvmpipe_screen(screen)->winsys;
  122.       dt = llvmpipe_resource(res)->dt;
  123.       gdi_sw_display(winsys, dt, hDC);
  124.       return;
  125.    }
  126. #endif
  127.  
  128.    winsys = softpipe_screen(screen)->winsys,
  129.    dt = softpipe_resource(res)->dt,
  130.    gdi_sw_display(winsys, dt, hDC);
  131. }
  132.  
  133.  
  134. static const struct stw_winsys stw_winsys = {
  135.    &gdi_screen_create,
  136.    &gdi_present,
  137.    NULL, /* get_adapter_luid */
  138.    NULL, /* shared_surface_open */
  139.    NULL, /* shared_surface_close */
  140.    NULL  /* compose */
  141. };
  142.  
  143.  
  144. BOOL WINAPI
  145. DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
  146. {
  147.    switch (fdwReason) {
  148.    case DLL_PROCESS_ATTACH:
  149.       stw_init(&stw_winsys);
  150.       stw_init_thread();
  151.       break;
  152.  
  153.    case DLL_THREAD_ATTACH:
  154.       stw_init_thread();
  155.       break;
  156.  
  157.    case DLL_THREAD_DETACH:
  158.       stw_cleanup_thread();
  159.       break;
  160.  
  161.    case DLL_PROCESS_DETACH:
  162.       if (lpReserved == NULL) {
  163.          stw_cleanup_thread();
  164.          stw_cleanup();
  165.       }
  166.       break;
  167.    }
  168.    return TRUE;
  169. }
  170.