1 /**********************************************************
2 * Copyright 2008-2009 VMware, Inc. All rights reserved.
3 *
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:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
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
22 * SOFTWARE.
23 *
24 **********************************************************/
25
26 #include "svga_cmd.h"
27
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"
36
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"
44
45
46 void
svga_debug_describe_sampler_view(char * buf,const struct svga_sampler_view * sv)47 svga_debug_describe_sampler_view(char *buf, const struct svga_sampler_view *sv)
48 {
49 char res[128];
50 debug_describe_resource(res, sv->texture);
51 util_sprintf(buf, "svga_sampler_view<%s,[%u,%u]>", res, sv->min_lod, sv->max_lod);
52 }
53
54 struct svga_sampler_view *
svga_get_tex_sampler_view(struct pipe_context * pipe,struct pipe_resource * pt,unsigned min_lod,unsigned max_lod)55 svga_get_tex_sampler_view(struct pipe_context *pipe,
56 struct pipe_resource *pt,
57 unsigned min_lod, unsigned max_lod)
58 {
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);
65 boolean view = TRUE;
66
67 assert(pt);
68 assert(min_lod >= 0);
69 assert(min_lod <= max_lod);
70 assert(max_lod <= pt->last_level);
71
72
73 /* Is a view needed */
74 {
75 /*
76 * Can't control max lod. For first level views and when we only
77 * look at one level we disable mip filtering to achive the same
78 * results as a view.
79 */
80 if (min_lod == 0 && max_lod >= pt->last_level)
81 view = FALSE;
82
83 if (ss->debug.no_sampler_view)
84 view = FALSE;
85
86 if (ss->debug.force_sampler_view)
87 view = TRUE;
88 }
89
90 /* First try the cache */
91 if (view) {
92 pipe_mutex_lock(ss->tex_mutex);
93 if (tex->cached_view &&
94 tex->cached_view->min_lod == min_lod &&
95 tex->cached_view->max_lod == max_lod) {
96 svga_sampler_view_reference(&sv, tex->cached_view);
97 pipe_mutex_unlock(ss->tex_mutex);
98 SVGA_DBG(DEBUG_VIEWS, "svga: Sampler view: reuse %p, %u %u, last %u\n",
99 pt, min_lod, max_lod, pt->last_level);
100 svga_validate_sampler_view(svga_context(pipe), sv);
101 return sv;
102 }
103 pipe_mutex_unlock(ss->tex_mutex);
104 }
105
106 sv = CALLOC_STRUCT(svga_sampler_view);
107 pipe_reference_init(&sv->reference, 1);
108
109 /* Note: we're not refcounting the texture resource here to avoid
110 * a circular dependency.
111 */
112 sv->texture = pt;
113
114 sv->min_lod = min_lod;
115 sv->max_lod = max_lod;
116
117 /* No view needed just use the whole texture */
118 if (!view) {
119 SVGA_DBG(DEBUG_VIEWS,
120 "svga: Sampler view: no %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,
123 pt->width0,
124 pt->height0,
125 pt->depth0,
126 pt->last_level);
127 sv->key.cachable = 0;
128 sv->handle = tex->handle;
129 debug_reference(&sv->reference,
130 (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
131 return sv;
132 }
133
134 SVGA_DBG(DEBUG_VIEWS,
135 "svga: Sampler view: yes %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
136 pt, min_lod, max_lod,
137 max_lod - min_lod + 1,
138 pt->width0,
139 pt->height0,
140 pt->depth0,
141 pt->last_level);
142
143 sv->age = tex->age;
144 sv->handle = svga_texture_view_surface(svga, tex, flags, format,
145 min_lod,
146 max_lod - min_lod + 1,
147 -1, -1,
148 &sv->key);
149
150 if (!sv->handle) {
151 assert(0);
152 sv->key.cachable = 0;
153 sv->handle = tex->handle;
154 debug_reference(&sv->reference,
155 (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
156 return sv;
157 }
158
159 pipe_mutex_lock(ss->tex_mutex);
160 svga_sampler_view_reference(&tex->cached_view, sv);
161 pipe_mutex_unlock(ss->tex_mutex);
162
163 debug_reference(&sv->reference,
164 (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
165
166 return sv;
167 }
168
169 void
svga_validate_sampler_view(struct svga_context * svga,struct svga_sampler_view * v)170 svga_validate_sampler_view(struct svga_context *svga, struct svga_sampler_view *v)
171 {
172 struct svga_texture *tex = svga_texture(v->texture);
173 unsigned numFaces;
174 unsigned age = 0;
175 int i, k;
176
177 assert(svga);
178
179 if (v->handle == tex->handle)
180 return;
181
182 age = tex->age;
183
184 if(tex->b.b.target == PIPE_TEXTURE_CUBE)
185 numFaces = 6;
186 else
187 numFaces = 1;
188
189 for (i = v->min_lod; i <= v->max_lod; i++) {
190 for (k = 0; k < numFaces; k++) {
191 if (v->age < tex->view_age[i])
192 svga_texture_copy_handle(svga,
193 tex->handle, 0, 0, 0, i, k,
194 v->handle, 0, 0, 0, i - v->min_lod, k,
195 u_minify(tex->b.b.width0, i),
196 u_minify(tex->b.b.height0, i),
197 u_minify(tex->b.b.depth0, i));
198 }
199 }
200
201 v->age = age;
202 }
203
204 void
svga_destroy_sampler_view_priv(struct svga_sampler_view * v)205 svga_destroy_sampler_view_priv(struct svga_sampler_view *v)
206 {
207 struct svga_texture *tex = svga_texture(v->texture);
208
209 if(v->handle != tex->handle) {
210 struct svga_screen *ss = svga_screen(v->texture->screen);
211 SVGA_DBG(DEBUG_DMA, "unref sid %p (sampler view)\n", v->handle);
212 svga_screen_surface_destroy(ss, &v->key, &v->handle);
213 }
214
215 /* Note: we're not refcounting the texture resource here to avoid
216 * a circular dependency.
217 */
218 v->texture = NULL;
219
220 FREE(v);
221 }
222