1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without
7 * restriction, including without limitation the rights to use, copy,
8 * modify, merge, publish, distribute, sublicense, and/or sell copies
9 * of the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 **********************************************************/
28 #include "pipe/p_state.h"
29 #include "pipe/p_defines.h"
30 #include "util/u_inlines.h"
31 #include "os/os_thread.h"
32 #include "util/u_format.h"
33 #include "util/u_math.h"
34 #include "util/u_memory.h"
36 #include "svga_screen.h"
37 #include "svga_context.h"
38 #include "svga_resource_texture.h"
39 #include "svga_sampler_view.h"
40 #include "svga_debug.h"
41 #include "svga_surface.h"
44 struct svga_sampler_view
*
45 svga_get_tex_sampler_view(struct pipe_context
*pipe
,
46 struct pipe_resource
*pt
,
47 unsigned min_lod
, unsigned max_lod
)
49 struct svga_screen
*ss
= svga_screen(pt
->screen
);
50 struct svga_texture
*tex
= svga_texture(pt
);
51 struct svga_sampler_view
*sv
= NULL
;
52 SVGA3dSurfaceFormat format
= svga_translate_format(pt
->format
);
57 assert(min_lod
<= max_lod
);
58 assert(max_lod
<= pt
->last_level
);
61 /* Is a view needed */
64 * Can't control max lod. For first level views and when we only
65 * look at one level we disable mip filtering to achive the same
68 if (min_lod
== 0 && max_lod
>= pt
->last_level
)
71 if (util_format_is_s3tc(pt
->format
) && view
) {
72 format
= svga_translate_format_render(pt
->format
);
75 if (ss
->debug
.no_sampler_view
)
78 if (ss
->debug
.force_sampler_view
)
82 /* First try the cache */
84 pipe_mutex_lock(ss
->tex_mutex
);
85 if (tex
->cached_view
&&
86 tex
->cached_view
->min_lod
== min_lod
&&
87 tex
->cached_view
->max_lod
== max_lod
) {
88 svga_sampler_view_reference(&sv
, tex
->cached_view
);
89 pipe_mutex_unlock(ss
->tex_mutex
);
90 SVGA_DBG(DEBUG_VIEWS
, "svga: Sampler view: reuse %p, %u %u, last %u\n",
91 pt
, min_lod
, max_lod
, pt
->last_level
);
92 svga_validate_sampler_view(svga_context(pipe
), sv
);
95 pipe_mutex_unlock(ss
->tex_mutex
);
98 sv
= CALLOC_STRUCT(svga_sampler_view
);
99 pipe_reference_init(&sv
->reference
, 1);
100 pipe_resource_reference(&sv
->texture
, pt
);
101 sv
->min_lod
= min_lod
;
102 sv
->max_lod
= max_lod
;
104 /* No view needed just use the whole texture */
106 SVGA_DBG(DEBUG_VIEWS
,
107 "svga: Sampler view: no %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
108 pt
, min_lod
, max_lod
,
109 max_lod
- min_lod
+ 1,
114 sv
->key
.cachable
= 0;
115 sv
->handle
= tex
->handle
;
119 SVGA_DBG(DEBUG_VIEWS
,
120 "svga: Sampler view: yes %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
121 pt
, min_lod
, max_lod
,
122 max_lod
- min_lod
+ 1,
129 sv
->handle
= svga_texture_view_surface(pipe
, tex
, format
,
131 max_lod
- min_lod
+ 1,
137 sv
->key
.cachable
= 0;
138 sv
->handle
= tex
->handle
;
142 pipe_mutex_lock(ss
->tex_mutex
);
143 svga_sampler_view_reference(&tex
->cached_view
, sv
);
144 pipe_mutex_unlock(ss
->tex_mutex
);
150 svga_validate_sampler_view(struct svga_context
*svga
, struct svga_sampler_view
*v
)
152 struct svga_texture
*tex
= svga_texture(v
->texture
);
159 if (v
->handle
== tex
->handle
)
164 if(tex
->b
.b
.target
== PIPE_TEXTURE_CUBE
)
169 for (i
= v
->min_lod
; i
<= v
->max_lod
; i
++) {
170 for (k
= 0; k
< numFaces
; k
++) {
171 if (v
->age
< tex
->view_age
[i
])
172 svga_texture_copy_handle(svga
, NULL
,
173 tex
->handle
, 0, 0, 0, i
, k
,
174 v
->handle
, 0, 0, 0, i
- v
->min_lod
, k
,
175 u_minify(tex
->b
.b
.width0
, i
),
176 u_minify(tex
->b
.b
.height0
, i
),
177 u_minify(tex
->b
.b
.depth0
, i
));
185 svga_destroy_sampler_view_priv(struct svga_sampler_view
*v
)
187 struct svga_texture
*tex
= svga_texture(v
->texture
);
189 if(v
->handle
!= tex
->handle
) {
190 struct svga_screen
*ss
= svga_screen(v
->texture
->screen
);
191 SVGA_DBG(DEBUG_DMA
, "unref sid %p (sampler view)\n", v
->handle
);
192 svga_screen_surface_destroy(ss
, &v
->key
, &v
->handle
);
194 pipe_resource_reference(&v
->texture
, NULL
);