src/gallium/state_trackers/dri/dri_context.h

   1 /**************************************************************************
   2  *
   3  * Copyright (C) 2009 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  * Author: Keith Whitwell <keithw@vmware.com>
  29  * Author: Jakob Bornecrantz <wallbraker@gmail.com>
  30  */
  31
  32 #ifndef DRI_CONTEXT_H
  33 #define DRI_CONTEXT_H
  34
  35 #include "pipe/p_compiler.h"
  36 #include "drm.h"
  37 #include "dri_util.h"
  38
  39 struct pipe_context;
  40 struct pipe_fence;
  41 struct st_context;
  42 struct dri_drawable;
  43
  44 struct dri_context
  45 {
  46    /* dri */
  47    __DRIscreen *sPriv;
  48    __DRIcontext *cPriv;
  49    __DRIdrawable *dPriv;
  50    __DRIdrawable *rPriv;
  51
  52    driOptionCache optionCache;
  53
  54    unsigned int d_stamp;
  55    unsigned int r_stamp;
  56
  57    drmLock *lock;
  58    boolean isLocked;
  59    boolean stLostLock;
  60    boolean wsLostLock;
  61
  62    unsigned int bind_count;
  63
  64    /* gallium */
  65    struct st_context *st;
  66    struct pipe_context *pipe;
  67 };
  68
  69 static INLINE struct dri_context *
  70 dri_context(__DRIcontext * driContextPriv)
  71 {
  72    return (struct dri_context *)driContextPriv->driverPrivate;
  73 }
  74
  75 static INLINE void
  76 dri_lock(struct dri_context *ctx)
  77 {
  78    drm_context_t hw_context = ctx->cPriv->hHWContext;
  79    char ret = 0;
  80
  81    DRM_CAS(ctx->lock, hw_context, DRM_LOCK_HELD | hw_context, ret);
  82    if (ret) {
  83       drmGetLock(ctx->sPriv->fd, hw_context, 0);
  84       ctx->stLostLock = TRUE;
  85       ctx->wsLostLock = TRUE;
  86    }
  87    ctx->isLocked = TRUE;
  88 }
  89
  90 static INLINE void
  91 dri_unlock(struct dri_context *ctx)
  92 {
  93    ctx->isLocked = FALSE;
  94    DRM_UNLOCK(ctx->sPriv->fd, ctx->lock, ctx->cPriv->hHWContext);
  95 }
  96
  97 /***********************************************************************
  98  * dri_context.c
  99  */
 100 extern struct dri1_api_lock_funcs dri1_lf;
 101
 102 void dri_destroy_context(__DRIcontext * driContextPriv);
 103
 104 boolean dri_unbind_context(__DRIcontext * driContextPriv);
 105
 106 boolean
 107 dri_make_current(__DRIcontext * driContextPriv,
 108                  __DRIdrawable * driDrawPriv,
 109                  __DRIdrawable * driReadPriv);
 110
 111 boolean
 112 dri_create_context(const __GLcontextModes * visual,
 113                    __DRIcontext * driContextPriv,
 114                    void *sharedContextPrivate);
 115
 116 /***********************************************************************
 117  * dri_extensions.c
 118  */
 119 void dri_init_extensions(struct dri_context *ctx);
 120
 121 #endif
 122
 123 /* vim: set sw=3 ts=8 sts=3 expandtab: */