src/gallium/include/pipe/p_inlines.h

   1 /**************************************************************************
   2  *
   3  * Copyright 2007 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 #ifndef P_INLINES_H
  29 #define P_INLINES_H
  30
  31 #include "p_context.h"
  32 #include "p_defines.h"
  33 #include "p_screen.h"
  34
  35
  36 #ifdef __cplusplus
  37 extern "C" {
  38 #endif
  39
  40
  41 /**
  42  * Set 'ptr' to point to 'surf' and update reference counting.
  43  * The old thing pointed to, if any, will be unreferenced first.
  44  * 'surf' may be NULL.
  45  */
  46 static INLINE void
  47 pipe_surface_reference(struct pipe_surface **ptr, struct pipe_surface *surf)
  48 {
  49    /* bump the refcount first */
  50    if (surf) {
  51       assert(surf->refcount);
  52       surf->refcount++;
  53    }
  54
  55    if (*ptr) {
  56       struct pipe_screen *screen;
  57       assert((*ptr)->refcount);
  58       assert((*ptr)->texture);
  59       screen = (*ptr)->texture->screen;
  60       screen->tex_surface_release( screen, ptr );
  61       assert(!*ptr);
  62    }
  63
  64    *ptr = surf;
  65 }
  66
  67
  68 /**
  69  * \sa pipe_surface_reference
  70  */
  71 static INLINE void
  72 pipe_transfer_reference(struct pipe_transfer **ptr, struct pipe_transfer *trans)
  73 {
  74    /* bump the refcount first */
  75    if (trans) {
  76       assert(trans->refcount);
  77       trans->refcount++;
  78    }
  79
  80    if (*ptr) {
  81       struct pipe_screen *screen;
  82       assert((*ptr)->refcount);
  83       assert((*ptr)->texture);
  84       screen = (*ptr)->texture->screen;
  85       screen->tex_transfer_release( screen, ptr );
  86       assert(!*ptr);
  87    }
  88
  89    *ptr = trans;
  90 }
  91
  92
  93 /**
  94  * \sa pipe_surface_reference
  95  */
  96 static INLINE void
  97 pipe_texture_reference(struct pipe_texture **ptr,
  98                        struct pipe_texture *pt)
  99 {
 100    assert(ptr);
 101
 102    if (pt) {
 103       assert(pt->refcount);
 104       pt->refcount++;
 105    }
 106
 107    if (*ptr) {
 108       struct pipe_screen *screen = (*ptr)->screen;
 109       assert(screen);
 110       assert((*ptr)->refcount);
 111       screen->texture_release(screen, ptr);
 112
 113       assert(!*ptr);
 114    }
 115
 116    *ptr = pt;
 117 }
 118
 119
 120 static INLINE void
 121 pipe_texture_release(struct pipe_texture **ptr)
 122 {
 123    struct pipe_screen *screen;
 124    assert(ptr);
 125    screen = (*ptr)->screen;
 126    assert((*ptr)->refcount);
 127    screen->texture_release(screen, ptr);
 128    *ptr = NULL;
 129 }
 130
 131
 132 /**
 133  * Convenience wrappers for screen buffer functions.
 134  */
 135
 136 static INLINE struct pipe_buffer *
 137 pipe_buffer_create( struct pipe_screen *screen,
 138                     unsigned alignment, unsigned usage, unsigned size )
 139 {
 140    return screen->buffer_create(screen, alignment, usage, size);
 141 }
 142
 143 static INLINE struct pipe_buffer *
 144 pipe_user_buffer_create( struct pipe_screen *screen, void *ptr, unsigned size )
 145 {
 146    return screen->user_buffer_create(screen, ptr, size);
 147 }
 148
 149 static INLINE void *
 150 pipe_buffer_map(struct pipe_screen *screen,
 151                 struct pipe_buffer *buf,
 152                 unsigned usage)
 153 {
 154    return screen->buffer_map(screen, buf, usage);
 155 }
 156
 157 static INLINE void
 158 pipe_buffer_unmap(struct pipe_screen *screen,
 159                   struct pipe_buffer *buf)
 160 {
 161    screen->buffer_unmap(screen, buf);
 162 }
 163
 164 /* XXX: thread safety issues!
 165  */
 166 static INLINE void
 167 pipe_buffer_reference(struct pipe_screen *screen,
 168                       struct pipe_buffer **ptr,
 169                       struct pipe_buffer *buf)
 170 {
 171    if (buf) {
 172       assert(buf->refcount);
 173       buf->refcount++;
 174    }
 175
 176    if (*ptr) {
 177       assert((*ptr)->refcount);
 178       if(--(*ptr)->refcount == 0) {
 179          screen->buffer_destroy( screen, *ptr );
 180       }
 181    }
 182
 183    *ptr = buf;
 184 }
 185
 186
 187 #ifdef __cplusplus
 188 }
 189 #endif
 190
 191 #endif /* P_INLINES_H */