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