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_screen.h"
38 #include "svga_context.h"
39 #include "svga_resource_texture.h"
40 #include "svga_sampler_view.h"
41 #include "svga_debug.h"
42 #include "svga_surface.h"
46 svga_debug_describe_sampler_view(char *buf, const struct svga_sampler_view *sv)
49 debug_describe_resource(res, sv->texture);
50 util_sprintf(buf, "svga_sampler_view<%s,[%u,%u]>", res, sv->min_lod, sv->max_lod);
53 struct svga_sampler_view *
54 svga_get_tex_sampler_view(struct pipe_context *pipe,
55 struct pipe_resource *pt,
56 unsigned min_lod, unsigned max_lod)
58 struct svga_context *svga = svga_context(pipe);
59 struct svga_screen *ss = svga_screen(pipe->screen);
60 struct svga_texture *tex = svga_texture(pt);
61 struct svga_sampler_view *sv = NULL;
62 SVGA3dSurfaceFlags flags = SVGA3D_SURFACE_HINT_TEXTURE;
63 SVGA3dSurfaceFormat format = svga_translate_format(pt->format);
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);
106 pipe_reference_init(&sv->reference, 1);
107 pipe_resource_reference(&sv->texture, pt);
108 sv->min_lod = min_lod;
109 sv->max_lod = max_lod;
111 /* No view needed just use the whole texture */
113 SVGA_DBG(DEBUG_VIEWS,
114 "svga: Sampler view: no %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
115 pt, min_lod, max_lod,
116 max_lod - min_lod + 1,
121 sv->key.cachable = 0;
122 sv->handle = tex->handle;
123 debug_reference(&sv->reference,
124 (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
128 SVGA_DBG(DEBUG_VIEWS,
129 "svga: Sampler view: yes %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
130 pt, min_lod, max_lod,
131 max_lod - min_lod + 1,
138 sv->handle = svga_texture_view_surface(svga, tex, flags, format,
140 max_lod - min_lod + 1,
146 sv->key.cachable = 0;
147 sv->handle = tex->handle;
148 debug_reference(&sv->reference,
149 (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
153 pipe_mutex_lock(ss->tex_mutex);
154 svga_sampler_view_reference(&tex->cached_view, sv);
155 pipe_mutex_unlock(ss->tex_mutex);
157 debug_reference(&sv->reference,
158 (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
164 svga_validate_sampler_view(struct svga_context *svga, struct svga_sampler_view *v)
166 struct svga_texture *tex = svga_texture(v->texture);
173 if (v->handle == tex->handle)
178 if(tex->b.b.target == PIPE_TEXTURE_CUBE)
183 for (i = v->min_lod; i <= v->max_lod; i++) {
184 for (k = 0; k < numFaces; k++) {
185 if (v->age < tex->view_age[i])
186 svga_texture_copy_handle(svga,
187 tex->handle, 0, 0, 0, i, k,
188 v->handle, 0, 0, 0, i - v->min_lod, k,
189 u_minify(tex->b.b.width0, i),
190 u_minify(tex->b.b.height0, i),
191 u_minify(tex->b.b.depth0, i));
199 svga_destroy_sampler_view_priv(struct svga_sampler_view *v)
201 struct svga_texture *tex = svga_texture(v->texture);
203 if(v->handle != tex->handle) {
204 struct svga_screen *ss = svga_screen(v->texture->screen);
205 SVGA_DBG(DEBUG_DMA, "unref sid %p (sampler view)\n", v->handle);
206 svga_screen_surface_destroy(ss, &v->key, &v->handle);
208 pipe_resource_reference(&v->texture, NULL);