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