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"
35 #include "util/u_string.h"
37 #include "svga_format.h"
38 #include "svga_screen.h"
39 #include "svga_context.h"
40 #include "svga_resource_texture.h"
41 #include "svga_sampler_view.h"
42 #include "svga_debug.h"
43 #include "svga_surface.h"
47 svga_debug_describe_sampler_view(char *buf
, const struct svga_sampler_view
*sv
)
50 debug_describe_resource(res
, sv
->texture
);
51 util_sprintf(buf
, "svga_sampler_view<%s,[%u,%u]>", res
, sv
->min_lod
, sv
->max_lod
);
54 struct svga_sampler_view
*
55 svga_get_tex_sampler_view(struct pipe_context
*pipe
,
56 struct pipe_resource
*pt
,
57 unsigned min_lod
, unsigned max_lod
)
59 struct svga_context
*svga
= svga_context(pipe
);
60 struct svga_screen
*ss
= svga_screen(pipe
->screen
);
61 struct svga_texture
*tex
= svga_texture(pt
);
62 struct svga_sampler_view
*sv
= NULL
;
63 SVGA3dSurfaceFlags flags
= SVGA3D_SURFACE_HINT_TEXTURE
;
64 SVGA3dSurfaceFormat format
= svga_translate_format(ss
, pt
->format
, PIPE_BIND_SAMPLER_VIEW
);
68 assert(min_lod
<= max_lod
);
69 assert(max_lod
<= pt
->last_level
);
72 /* Is a view needed */
75 * Can't control max lod. For first level views and when we only
76 * look at one level we disable mip filtering to achive the same
79 if (min_lod
== 0 && max_lod
>= pt
->last_level
)
82 if (ss
->debug
.no_sampler_view
)
85 if (ss
->debug
.force_sampler_view
)
89 /* First try the cache */
91 pipe_mutex_lock(ss
->tex_mutex
);
92 if (tex
->cached_view
&&
93 tex
->cached_view
->min_lod
== min_lod
&&
94 tex
->cached_view
->max_lod
== max_lod
) {
95 svga_sampler_view_reference(&sv
, tex
->cached_view
);
96 pipe_mutex_unlock(ss
->tex_mutex
);
97 SVGA_DBG(DEBUG_VIEWS
, "svga: Sampler view: reuse %p, %u %u, last %u\n",
98 pt
, min_lod
, max_lod
, pt
->last_level
);
99 svga_validate_sampler_view(svga_context(pipe
), sv
);
102 pipe_mutex_unlock(ss
->tex_mutex
);
105 sv
= CALLOC_STRUCT(svga_sampler_view
);
109 pipe_reference_init(&sv
->reference
, 1);
111 /* Note: we're not refcounting the texture resource here to avoid
112 * a circular dependency.
116 sv
->min_lod
= min_lod
;
117 sv
->max_lod
= max_lod
;
119 /* No view needed just use the whole texture */
121 SVGA_DBG(DEBUG_VIEWS
,
122 "svga: Sampler view: no %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
123 pt
, min_lod
, max_lod
,
124 max_lod
- min_lod
+ 1,
129 sv
->key
.cachable
= 0;
130 sv
->handle
= tex
->handle
;
131 debug_reference(&sv
->reference
,
132 (debug_reference_descriptor
)svga_debug_describe_sampler_view
, 0);
136 SVGA_DBG(DEBUG_VIEWS
,
137 "svga: Sampler view: yes %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
138 pt
, min_lod
, max_lod
,
139 max_lod
- min_lod
+ 1,
146 sv
->handle
= svga_texture_view_surface(svga
, tex
, flags
, format
,
148 max_lod
- min_lod
+ 1,
154 sv
->key
.cachable
= 0;
155 sv
->handle
= tex
->handle
;
156 debug_reference(&sv
->reference
,
157 (debug_reference_descriptor
)svga_debug_describe_sampler_view
, 0);
161 pipe_mutex_lock(ss
->tex_mutex
);
162 svga_sampler_view_reference(&tex
->cached_view
, sv
);
163 pipe_mutex_unlock(ss
->tex_mutex
);
165 debug_reference(&sv
->reference
,
166 (debug_reference_descriptor
)svga_debug_describe_sampler_view
, 0);
172 svga_validate_sampler_view(struct svga_context
*svga
, struct svga_sampler_view
*v
)
174 struct svga_texture
*tex
= svga_texture(v
->texture
);
182 if (v
->handle
== tex
->handle
)
187 if(tex
->b
.b
.target
== PIPE_TEXTURE_CUBE
)
192 for (i
= v
->min_lod
; i
<= v
->max_lod
; i
++) {
193 for (k
= 0; k
< numFaces
; k
++) {
194 if (v
->age
< tex
->view_age
[i
])
195 svga_texture_copy_handle(svga
,
196 tex
->handle
, 0, 0, 0, i
, k
,
197 v
->handle
, 0, 0, 0, i
- v
->min_lod
, k
,
198 u_minify(tex
->b
.b
.width0
, i
),
199 u_minify(tex
->b
.b
.height0
, i
),
200 u_minify(tex
->b
.b
.depth0
, i
));
208 svga_destroy_sampler_view_priv(struct svga_sampler_view
*v
)
210 struct svga_texture
*tex
= svga_texture(v
->texture
);
212 if(v
->handle
!= tex
->handle
) {
213 struct svga_screen
*ss
= svga_screen(v
->texture
->screen
);
214 SVGA_DBG(DEBUG_DMA
, "unref sid %p (sampler view)\n", v
->handle
);
215 svga_screen_surface_destroy(ss
, &v
->key
, &v
->handle
);
218 /* Note: we're not refcounting the texture resource here to avoid
219 * a circular dependency.