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 #include "stw_device.h"
  37 #include "stw_winsys.h"
  38 #include "stw_pixelformat.h"
  39 #include "stw_icd.h"
  40 #include "stw_tls.h"
  41 #include "stw_framebuffer.h"
  42
  43 #ifdef WIN32_THREADS
  44 extern _glthread_Mutex OneTimeLock;
  45 #endif
  46
  47
  48 struct stw_device *stw_dev = NULL;
  49
  50
  51 /**
  52  * XXX: Dispatch pipe_screen::flush_front_buffer to our
  53  * stw_winsys::flush_front_buffer.
  54  */
  55 static void
  56 stw_flush_frontbuffer(struct pipe_screen *screen,
  57                      struct pipe_surface *surface,
  58                      void *context_private )
  59 {
  60    HDC hdc = (HDC)context_private;
  61    struct stw_framebuffer *fb;
  62
  63    fb = stw_framebuffer_from_hdc( hdc );
  64    if (!fb) {
  65       /* fb can be NULL if window was destroyed already */
  66       return;
  67    }
  68
  69    stw_framebuffer_present_locked(hdc, fb, surface);
  70 }
  71
  72
  73 boolean
  74 stw_init(const struct stw_winsys *stw_winsys)
  75 {
  76    static struct stw_device stw_dev_storage;
  77    struct pipe_screen *screen;
  78
  79    debug_printf("%s\n", __FUNCTION__);
  80
  81    assert(!stw_dev);
  82
  83    stw_tls_init();
  84
  85    stw_dev = &stw_dev_storage;
  86    memset(stw_dev, 0, sizeof(*stw_dev));
  87
  88 #ifdef DEBUG
  89    stw_dev->memdbg_no = debug_memory_begin();
  90 #endif
  91
  92    stw_dev->stw_winsys = stw_winsys;
  93
  94 #ifdef WIN32_THREADS
  95    _glthread_INIT_MUTEX(OneTimeLock);
  96 #endif
  97
  98    screen = stw_winsys->create_screen();
  99    if(!screen)
 100       goto error1;
 101
 102    if(stw_winsys->get_adapter_luid)
 103       stw_winsys->get_adapter_luid(screen, &stw_dev->AdapterLuid);
 104
 105    stw_dev->screen = screen;
 106
 107    /* XXX
 108     */
 109    stw_dev->screen->flush_frontbuffer = &stw_flush_frontbuffer;
 110
 111    pipe_mutex_init( stw_dev->ctx_mutex );
 112    pipe_mutex_init( stw_dev->fb_mutex );
 113
 114    stw_dev->ctx_table = handle_table_create();
 115    if (!stw_dev->ctx_table) {
 116       goto error1;
 117    }
 118
 119    stw_pixelformat_init();
 120
 121    return TRUE;
 122
 123 error1:
 124    stw_dev = NULL;
 125    return FALSE;
 126 }
 127
 128
 129 boolean
 130 stw_init_thread(void)
 131 {
 132    return stw_tls_init_thread();
 133 }
 134
 135
 136 void
 137 stw_cleanup_thread(void)
 138 {
 139    stw_tls_cleanup_thread();
 140 }
 141
 142
 143 void
 144 stw_cleanup(void)
 145 {
 146    DHGLRC dhglrc;
 147
 148    debug_printf("%s\n", __FUNCTION__);
 149
 150    if (!stw_dev)
 151       return;
 152
 153    /*
 154     * Abort cleanup if there are still active contexts. In some situations
 155     * this DLL may be unloaded before the DLL that is using GL contexts is.
 156     */
 157    pipe_mutex_lock( stw_dev->ctx_mutex );
 158    dhglrc = handle_table_get_first_handle(stw_dev->ctx_table);
 159    pipe_mutex_unlock( stw_dev->ctx_mutex );
 160    if (dhglrc) {
 161       debug_printf("%s: contexts still active -- cleanup aborted\n", __FUNCTION__);
 162       stw_dev = NULL;
 163       return;
 164    }
 165
 166    handle_table_destroy(stw_dev->ctx_table);
 167
 168    stw_framebuffer_cleanup();
 169
 170    pipe_mutex_destroy( stw_dev->fb_mutex );
 171    pipe_mutex_destroy( stw_dev->ctx_mutex );
 172
 173    stw_dev->screen->destroy(stw_dev->screen);
 174
 175 #ifdef WIN32_THREADS
 176    _glthread_DESTROY_MUTEX(OneTimeLock);
 177
 178    _glapi_destroy_multithread();
 179 #endif
 180
 181 #ifdef DEBUG
 182    debug_memory_end(stw_dev->memdbg_no);
 183 #endif
 184
 185    stw_tls_cleanup();
 186
 187    stw_dev = NULL;
 188 }
 189
 190
 191 struct stw_context *
 192 stw_lookup_context_locked( DHGLRC dhglrc )
 193 {
 194    if (dhglrc == 0)
 195       return NULL;
 196
 197    if (stw_dev == NULL)
 198       return NULL;
 199
 200    return (struct stw_context *) handle_table_get(stw_dev->ctx_table, dhglrc);
 201 }
 202
 203
 204 void APIENTRY
 205 DrvSetCallbackProcs(
 206    INT nProcs,
 207    PROC *pProcs )
 208 {
 209    size_t size;
 210
 211    if (stw_dev == NULL)
 212       return;
 213
 214    size = MIN2(nProcs * sizeof *pProcs, sizeof stw_dev->callbacks);
 215    memcpy(&stw_dev->callbacks, pProcs, size);
 216
 217    return;
 218 }
 219
 220
 221 BOOL APIENTRY
 222 DrvValidateVersion(
 223    ULONG ulVersion )
 224 {
 225    /* TODO: get the expected version from the winsys */
 226    return ulVersion == 1;
 227 }