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      1 /**************************************************************************
      2  *
      3  * Copyright 2008 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 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 VMWARE 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 #ifndef STW_DEVICE_H_
     29 #define STW_DEVICE_H_
     30 
     31 
     32 #include "pipe/p_compiler.h"
     33 #include "util/u_handle_table.h"
     34 #include "stw_icd.h"
     35 #include "stw_pixelformat.h"
     36 
     37 
     38 #define STW_MAX_PIXELFORMATS   256
     39 
     40 
     41 struct pipe_screen;
     42 struct st_api;
     43 struct st_manager;
     44 struct stw_framebuffer;
     45 
     46 struct stw_device
     47 {
     48    const struct stw_winsys *stw_winsys;
     49 
     50    struct pipe_screen *screen;
     51 
     52    /* Cache some PIPE_CAP_* */
     53    unsigned max_2d_levels;
     54    unsigned max_2d_length;
     55 
     56    struct st_api *stapi;
     57    struct st_manager *smapi;
     58 
     59    LUID AdapterLuid;
     60 
     61    struct stw_pixelformat_info pixelformats[STW_MAX_PIXELFORMATS];
     62    unsigned pixelformat_count;
     63    unsigned pixelformat_extended_count;
     64 
     65    GLCALLBACKTABLE callbacks;
     66 
     67    CRITICAL_SECTION ctx_mutex;
     68    struct handle_table *ctx_table;
     69 
     70    /* TODO: use an atomic counter to track the number of locked
     71     * stw_framebuffer objects.  Assert that the counter is zero when
     72     * trying to lock this mutex.
     73     */
     74    CRITICAL_SECTION fb_mutex;
     75    struct stw_framebuffer *fb_head;
     76 
     77 #ifdef DEBUG
     78    unsigned long memdbg_no;
     79 #endif
     80 
     81    bool initialized;
     82 };
     83 
     84 
     85 extern struct stw_device *stw_dev;
     86 
     87 
     88 static inline struct stw_context *
     89 stw_lookup_context_locked( DHGLRC dhglrc )
     90 {
     91    if (dhglrc == 0 || stw_dev == NULL)
     92       return NULL;
     93    return (struct stw_context *) handle_table_get(stw_dev->ctx_table, dhglrc);
     94 }
     95 
     96 
     97 static inline void
     98 stw_lock_contexts(struct stw_device *stw_dev)
     99 {
    100    EnterCriticalSection(&stw_dev->ctx_mutex);
    101 }
    102 
    103 
    104 static inline void
    105 stw_unlock_contexts(struct stw_device *stw_dev)
    106 {
    107    LeaveCriticalSection(&stw_dev->ctx_mutex);
    108 }
    109 
    110 
    111 static inline void
    112 stw_lock_framebuffers(struct stw_device *stw_dev)
    113 {
    114    EnterCriticalSection(&stw_dev->fb_mutex);
    115 }
    116 
    117 
    118 static inline void
    119 stw_unlock_framebuffers(struct stw_device *stw_dev)
    120 {
    121    LeaveCriticalSection(&stw_dev->fb_mutex);
    122 }
    123 
    124 
    125 #endif /* STW_DEVICE_H_ */
    126