2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2006 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
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11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Initialize the fields of a gl_renderbuffer to default values.
31 _mesa_init_renderbuffer(struct gl_renderbuffer
*rb
, GLuint name
)
33 _glthread_INIT_MUTEX(rb
->Mutex
);
37 rb
->Delete
= _mesa_delete_renderbuffer
;
39 /* The rest of these should be set later by the caller of this function or
40 * the AllocStorage method:
42 rb
->AllocStorage
= NULL
;
46 rb
->InternalFormat
= GL_RGBA
;
47 rb
->Format
= MESA_FORMAT_NONE
;
52 * Delete a gl_framebuffer.
53 * This is the default function for renderbuffer->Delete().
56 _mesa_delete_renderbuffer(struct gl_renderbuffer
*rb
)
63 * Attach a renderbuffer to a framebuffer.
64 * \param bufferName one of the BUFFER_x tokens
67 _mesa_add_renderbuffer(struct gl_framebuffer
*fb
,
68 gl_buffer_index bufferName
, struct gl_renderbuffer
*rb
)
72 assert(bufferName
< BUFFER_COUNT
);
74 /* There should be no previous renderbuffer on this attachment point,
75 * with the exception of depth/stencil since the same renderbuffer may
78 assert(bufferName
== BUFFER_DEPTH
||
79 bufferName
== BUFFER_STENCIL
||
80 fb
->Attachment
[bufferName
].Renderbuffer
== NULL
);
82 _mesa_reference_renderbuffer(&fb
->Attachment
[bufferName
].Renderbuffer
, rb
);
87 * Remove the named renderbuffer from the given framebuffer.
88 * \param bufferName one of the BUFFER_x tokens
91 _mesa_remove_renderbuffer(struct gl_framebuffer
*fb
,
92 gl_buffer_index bufferName
)
94 assert(bufferName
< BUFFER_COUNT
);
95 _mesa_reference_renderbuffer(&fb
->Attachment
[bufferName
].Renderbuffer
,
101 * Set *ptr to point to rb. If *ptr points to another renderbuffer,
102 * dereference that buffer first. The new renderbuffer's refcount will
103 * be incremented. The old renderbuffer's refcount will be decremented.
104 * This is normally only called from the _mesa_reference_renderbuffer() macro
105 * when there's a real pointer change.
108 _mesa_reference_renderbuffer_(struct gl_renderbuffer
**ptr
,
109 struct gl_renderbuffer
*rb
)
112 /* Unreference the old renderbuffer */
113 GLboolean deleteFlag
= GL_FALSE
;
114 struct gl_renderbuffer
*oldRb
= *ptr
;
116 _glthread_LOCK_MUTEX(oldRb
->Mutex
);
117 ASSERT(oldRb
->RefCount
> 0);
119 /*printf("RB DECR %p (%d) to %d\n", (void*) oldRb, oldRb->Name, oldRb->RefCount);*/
120 deleteFlag
= (oldRb
->RefCount
== 0);
121 _glthread_UNLOCK_MUTEX(oldRb
->Mutex
);
124 oldRb
->Delete(oldRb
);
132 /* reference new renderbuffer */
133 _glthread_LOCK_MUTEX(rb
->Mutex
);
135 /*printf("RB INCR %p (%d) to %d\n", (void*) rb, rb->Name, rb->RefCount);*/
136 _glthread_UNLOCK_MUTEX(rb
->Mutex
);