src/gallium/state_trackers/wgl/stw_device.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2008 Tungsten Graphics, Inc., Cedar Park, Texas.
   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 above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28 #include <windows.h>
  29
  30 #include "glapi/glthread.h"
  31 #include "util/u_debug.h"
  32 #include "util/u_math.h"
  33 #include "pipe/p_screen.h"
  34 #include "state_tracker/st_public.h"
  35
  36 #ifdef DEBUG
  37 #include "trace/tr_screen.h"
  38 #include "trace/tr_texture.h"
  39 #endif
  40
  41 #include "stw_device.h"
  42 #include "stw_winsys.h"
  43 #include "stw_pixelformat.h"
  44 #include "stw_icd.h"
  45 #include "stw_tls.h"
  46 #include "stw_framebuffer.h"
  47
  48 #ifdef WIN32_THREADS
  49 extern _glthread_Mutex OneTimeLock;
  50 #endif
  51
  52
  53 struct stw_device *stw_dev = NULL;
  54
  55
  56 /**
  57  * XXX: Dispatch pipe_screen::flush_front_buffer to our
  58  * stw_winsys::flush_front_buffer.
  59  */
  60 static void
  61 stw_flush_frontbuffer(struct pipe_screen *screen,
  62                      struct pipe_surface *surface,
  63                      void *context_private )
  64 {
  65    HDC hdc = (HDC)context_private;
  66    struct stw_framebuffer *fb;
  67
  68    fb = stw_framebuffer_from_hdc( hdc );
  69    if (!fb) {
  70       /* fb can be NULL if window was destroyed already */
  71       return;
  72    }
  73
  74    stw_framebuffer_present_locked(hdc, fb, surface);
  75 }
  76
  77
  78 boolean
  79 stw_init(const struct stw_winsys *stw_winsys)
  80 {
  81    static struct stw_device stw_dev_storage;
  82    struct pipe_screen *screen;
  83
  84    debug_printf("%s\n", __FUNCTION__);
  85
  86    assert(!stw_dev);
  87
  88    stw_tls_init();
  89
  90    stw_dev = &stw_dev_storage;
  91    memset(stw_dev, 0, sizeof(*stw_dev));
  92
  93 #ifdef DEBUG
  94    stw_dev->memdbg_no = debug_memory_begin();
  95 #endif
  96
  97    stw_dev->stw_winsys = stw_winsys;
  98
  99 #ifdef WIN32_THREADS
 100    _glthread_INIT_MUTEX(OneTimeLock);
 101 #endif
 102
 103    screen = stw_winsys->create_screen();
 104    if(!screen)
 105       goto error1;
 106
 107    if(stw_winsys->get_adapter_luid)
 108       stw_winsys->get_adapter_luid(screen, &stw_dev->AdapterLuid);
 109
 110 #ifdef DEBUG
 111    stw_dev->screen = trace_screen_create(screen);
 112    stw_dev->trace_running = stw_dev->screen != screen ? TRUE : FALSE;
 113 #else
 114    stw_dev->screen = screen;
 115 #endif
 116
 117    stw_dev->screen->flush_frontbuffer = &stw_flush_frontbuffer;
 118
 119    pipe_mutex_init( stw_dev->ctx_mutex );
 120    pipe_mutex_init( stw_dev->fb_mutex );
 121
 122    stw_dev->ctx_table = handle_table_create();
 123    if (!stw_dev->ctx_table) {
 124       goto error1;
 125    }
 126
 127    stw_pixelformat_init();
 128
 129    return TRUE;
 130
 131 error1:
 132    stw_dev = NULL;
 133    return FALSE;
 134 }
 135
 136
 137 boolean
 138 stw_init_thread(void)
 139 {
 140    return stw_tls_init_thread();
 141 }
 142
 143
 144 void
 145 stw_cleanup_thread(void)
 146 {
 147    stw_tls_cleanup_thread();
 148 }
 149
 150
 151 void
 152 stw_cleanup(void)
 153 {
 154    DHGLRC dhglrc;
 155
 156    debug_printf("%s\n", __FUNCTION__);
 157
 158    if (!stw_dev)
 159       return;
 160
 161    /*
 162     * Abort cleanup if there are still active contexts. In some situations
 163     * this DLL may be unloaded before the DLL that is using GL contexts is.
 164     */
 165    pipe_mutex_lock( stw_dev->ctx_mutex );
 166    dhglrc = handle_table_get_first_handle(stw_dev->ctx_table);
 167    pipe_mutex_unlock( stw_dev->ctx_mutex );
 168    if (dhglrc) {
 169       debug_printf("%s: contexts still active -- cleanup aborted\n", __FUNCTION__);
 170       stw_dev = NULL;
 171       return;
 172    }
 173
 174    handle_table_destroy(stw_dev->ctx_table);
 175
 176    stw_framebuffer_cleanup();
 177
 178    pipe_mutex_destroy( stw_dev->fb_mutex );
 179    pipe_mutex_destroy( stw_dev->ctx_mutex );
 180
 181    stw_dev->screen->destroy(stw_dev->screen);
 182
 183 #ifdef WIN32_THREADS
 184    _glthread_DESTROY_MUTEX(OneTimeLock);
 185
 186    _glapi_destroy_multithread();
 187 #endif
 188
 189 #ifdef DEBUG
 190    debug_memory_end(stw_dev->memdbg_no);
 191 #endif
 192
 193    stw_tls_cleanup();
 194
 195    stw_dev = NULL;
 196 }
 197
 198
 199 struct stw_context *
 200 stw_lookup_context_locked( DHGLRC dhglrc )
 201 {
 202    if (dhglrc == 0)
 203       return NULL;
 204
 205    if (stw_dev == NULL)
 206       return NULL;
 207
 208    return (struct stw_context *) handle_table_get(stw_dev->ctx_table, dhglrc);
 209 }
 210
 211
 212 void APIENTRY
 213 DrvSetCallbackProcs(
 214    INT nProcs,
 215    PROC *pProcs )
 216 {
 217    size_t size;
 218
 219    if (stw_dev == NULL)
 220       return;
 221
 222    size = MIN2(nProcs * sizeof *pProcs, sizeof stw_dev->callbacks);
 223    memcpy(&stw_dev->callbacks, pProcs, size);
 224
 225    return;
 226 }
 227
 228
 229 BOOL APIENTRY
 230 DrvValidateVersion(
 231    ULONG ulVersion )
 232 {
 233    /* TODO: get the expected version from the winsys */
 234    return ulVersion == 1;
 235 }