2 * Mesa 3-D graphics library
5 * Copyright (C) 2010 LunarG Inc.
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
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
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.
25 * Chia-I Wu <olv@lunarg.com>
28 #include "util/u_memory.h"
29 #include "util/u_inlines.h"
30 #include "util/u_format.h"
31 #include "util/u_debug.h"
32 #include "state_tracker/st_manager.h" /* for st_manager_create_api */
34 #include "dri_screen.h"
35 #include "dri_context.h"
36 #include "dri_drawable.h"
37 #include "dri_st_api.h"
38 #include "dri1_helper.h"
39 #ifndef __NOT_HAVE_DRM_H
47 dri_st_framebuffer_validate(struct st_framebuffer_iface
*stfbi
,
48 const enum st_attachment_type
*statts
,
50 struct pipe_texture
**out
)
52 struct dri_drawable
*drawable
=
53 (struct dri_drawable
*) stfbi
->st_manager_private
;
54 unsigned statt_mask
, new_mask
;
59 for (i
= 0; i
< count
; i
++)
60 statt_mask
|= (1 << statts
[i
]);
62 /* record newly allocated textures */
63 new_mask
= (statt_mask
& ~drawable
->texture_mask
);
66 * dPriv->pStamp is the server stamp. It should be accessed with a lock, at
67 * least for DRI1. dPriv->lastStamp is the client stamp. It has the value
68 * of the server stamp when last checked.
70 new_stamp
= (drawable
->texture_stamp
!= drawable
->dPriv
->lastStamp
);
72 if (new_stamp
|| new_mask
) {
74 #ifndef __NOT_HAVE_DRM_H
75 if (__dri1_api_hooks
) {
76 dri1_allocate_textures(drawable
, statt_mask
);
79 dri2_allocate_textures(drawable
, statts
, count
);
83 drisw_update_drawable_info(drawable
);
85 drisw_allocate_textures(drawable
, statt_mask
);
88 /* add existing textures */
89 for (i
= 0; i
< ST_ATTACHMENT_COUNT
; i
++) {
90 if (drawable
->textures
[i
])
91 statt_mask
|= (1 << i
);
94 drawable
->texture_stamp
= drawable
->dPriv
->lastStamp
;
95 drawable
->texture_mask
= statt_mask
;
101 for (i
= 0; i
< count
; i
++) {
103 pipe_texture_reference(&out
[i
], drawable
->textures
[statts
[i
]]);
110 dri_st_framebuffer_flush_front(struct st_framebuffer_iface
*stfbi
,
111 enum st_attachment_type statt
)
113 struct dri_drawable
*drawable
=
114 (struct dri_drawable
*) stfbi
->st_manager_private
;
116 #ifndef __NOT_HAVE_DRM_H
117 if (__dri1_api_hooks
) {
118 dri1_flush_frontbuffer(drawable
, statt
);
121 dri2_flush_frontbuffer(drawable
, statt
);
124 drisw_flush_frontbuffer(drawable
, statt
);
131 * Create a framebuffer from the given drawable.
133 struct st_framebuffer_iface
*
134 dri_create_st_framebuffer(struct dri_drawable
*drawable
)
136 struct st_framebuffer_iface
*stfbi
;
138 stfbi
= CALLOC_STRUCT(st_framebuffer_iface
);
140 stfbi
->visual
= &drawable
->stvis
;
141 stfbi
->flush_front
= dri_st_framebuffer_flush_front
;
142 stfbi
->validate
= dri_st_framebuffer_validate
;
143 stfbi
->st_manager_private
= (void *) drawable
;
150 * Destroy a framebuffer.
153 dri_destroy_st_framebuffer(struct st_framebuffer_iface
*stfbi
)
155 struct dri_drawable
*drawable
=
156 (struct dri_drawable
*) stfbi
->st_manager_private
;
159 for (i
= 0; i
< ST_ATTACHMENT_COUNT
; i
++)
160 pipe_texture_reference(&drawable
->textures
[i
], NULL
);
166 * Validate the texture at an attachment. Allocate the texture if it does not
170 dri_st_framebuffer_validate_att(struct st_framebuffer_iface
*stfbi
,
171 enum st_attachment_type statt
)
173 struct dri_drawable
*drawable
=
174 (struct dri_drawable
*) stfbi
->st_manager_private
;
175 enum st_attachment_type statts
[ST_ATTACHMENT_COUNT
];
176 unsigned i
, count
= 0;
178 /* check if buffer already exists */
179 if (drawable
->texture_mask
& (1 << statt
))
182 /* make sure DRI2 does not destroy existing buffers */
183 for (i
= 0; i
< ST_ATTACHMENT_COUNT
; i
++) {
184 if (drawable
->texture_mask
& (1 << i
)) {
188 statts
[count
++] = statt
;
190 drawable
->texture_stamp
= drawable
->dPriv
->lastStamp
- 1;
192 stfbi
->validate(stfbi
, statts
, count
, NULL
);
196 * Reference counted st_api.
200 struct st_api
*stapi
;
204 * Add a reference to the st_api of the state tracker.
207 _dri_get_st_api(void)
209 p_atomic_inc(&dri_st_api
.refcnt
);
210 if (p_atomic_read(&dri_st_api
.refcnt
) == 1)
211 dri_st_api
.stapi
= st_manager_create_api();
215 * Remove a reference to the st_api of the state tracker.
218 _dri_put_st_api(void)
220 struct st_api
*stapi
= dri_st_api
.stapi
;
222 if (p_atomic_dec_zero(&dri_st_api
.refcnt
)) {
223 stapi
->destroy(dri_st_api
.stapi
);
224 dri_st_api
.stapi
= NULL
;
229 * Create a state tracker manager from the given screen.
232 dri_create_st_manager(struct dri_screen
*screen
)
234 struct st_manager
*smapi
;
236 smapi
= CALLOC_STRUCT(st_manager
);
238 smapi
->screen
= screen
->pipe_screen
;
246 * Destroy a state tracker manager.
249 dri_destroy_st_manager(struct st_manager
*smapi
)
256 * Return the st_api of OpenGL state tracker.
261 assert(dri_st_api
.stapi
);
262 return dri_st_api
.stapi
;