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]>",
52 res, sv->min_lod, sv->max_lod);
53 }
54
55
56 struct svga_sampler_view *
svga_get_tex_sampler_view(struct pipe_context * pipe,struct pipe_resource * pt,unsigned min_lod,unsigned max_lod)57 svga_get_tex_sampler_view(struct pipe_context *pipe,
58 struct pipe_resource *pt,
59 unsigned min_lod, unsigned max_lod)
60 {
61 struct svga_context *svga = svga_context(pipe);
62 struct svga_screen *ss = svga_screen(pipe->screen);
63 struct svga_texture *tex = svga_texture(pt);
64 struct svga_sampler_view *sv = NULL;
65 SVGA3dSurfaceFlags flags = SVGA3D_SURFACE_HINT_TEXTURE;
66 SVGA3dSurfaceFormat format = svga_translate_format(ss, pt->format,
67 PIPE_BIND_SAMPLER_VIEW);
68 boolean view = TRUE;
69
70 assert(pt);
71 assert(min_lod <= max_lod);
72 assert(max_lod <= pt->last_level);
73 assert(!svga_have_vgpu10(svga));
74
75 /* Is a view needed */
76 {
77 /*
78 * Can't control max lod. For first level views and when we only
79 * look at one level we disable mip filtering to achive the same
80 * results as a view.
81 */
82 if (min_lod == 0 && max_lod >= pt->last_level)
83 view = FALSE;
84
85 if (ss->debug.no_sampler_view)
86 view = FALSE;
87
88 if (ss->debug.force_sampler_view)
89 view = TRUE;
90 }
91
92 /* First try the cache */
93 if (view) {
94 mtx_lock(&ss->tex_mutex);
95 if (tex->cached_view &&
96 tex->cached_view->min_lod == min_lod &&
97 tex->cached_view->max_lod == max_lod) {
98 svga_sampler_view_reference(&sv, tex->cached_view);
99 mtx_unlock(&ss->tex_mutex);
100 SVGA_DBG(DEBUG_VIEWS, "svga: Sampler view: reuse %p, %u %u, last %u\n",
101 pt, min_lod, max_lod, pt->last_level);
102 svga_validate_sampler_view(svga_context(pipe), sv);
103 return sv;
104 }
105 mtx_unlock(&ss->tex_mutex);
106 }
107
108 sv = CALLOC_STRUCT(svga_sampler_view);
109 if (!sv)
110 return NULL;
111
112 pipe_reference_init(&sv->reference, 1);
113
114 /* Note: we're not refcounting the texture resource here to avoid
115 * a circular dependency.
116 */
117 sv->texture = pt;
118
119 sv->min_lod = min_lod;
120 sv->max_lod = max_lod;
121
122 /* No view needed just use the whole texture */
123 if (!view) {
124 SVGA_DBG(DEBUG_VIEWS,
125 "svga: Sampler view: no %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
126 pt, min_lod, max_lod,
127 max_lod - min_lod + 1,
128 pt->width0,
129 pt->height0,
130 pt->depth0,
131 pt->last_level);
132 sv->key.cachable = 0;
133 sv->handle = tex->handle;
134 debug_reference(&sv->reference,
135 (debug_reference_descriptor)svga_debug_describe_sampler_view, 0);
136 return sv;
137 }
138
139 SVGA_DBG(DEBUG_VIEWS,
140 "svga: Sampler view: yes %p, mips %u..%u, nr %u, size (%ux%ux%u), last %u\n",
141 pt, min_lod, max_lod,
142 max_lod - min_lod + 1,
143 pt->width0,
144 pt->height0,
145 pt->depth0,
146 pt->last_level);
147
148 sv->age = tex->age;
149 sv->handle = svga_texture_view_surface(svga, tex,
150 PIPE_BIND_SAMPLER_VIEW,
151 flags, format,
152 min_lod,
153 max_lod - min_lod + 1,
154 -1, 1, -1, FALSE,
155 &sv->key);
156
157 if (!sv->handle) {
158 sv->key.cachable = 0;
159 sv->handle = tex->handle;
160 debug_reference(&sv->reference,
161 (debug_reference_descriptor)
162 svga_debug_describe_sampler_view, 0);
163 return sv;
164 }
165
166 mtx_lock(&ss->tex_mutex);
167 svga_sampler_view_reference(&tex->cached_view, sv);
168 mtx_unlock(&ss->tex_mutex);
169
170 debug_reference(&sv->reference,
171 (debug_reference_descriptor)
172 svga_debug_describe_sampler_view, 0);
173
174 return sv;
175 }
176
177
178 void
svga_validate_sampler_view(struct svga_context * svga,struct svga_sampler_view * v)179 svga_validate_sampler_view(struct svga_context *svga,
180 struct svga_sampler_view *v)
181 {
182 struct svga_texture *tex = svga_texture(v->texture);
183 unsigned numFaces;
184 unsigned age = 0;
185 int i;
186 unsigned k;
187
188 assert(svga);
189 assert(!svga_have_vgpu10(svga));
190
191 if (v->handle == tex->handle)
192 return;
193
194 age = tex->age;
195
196 if (tex->b.b.target == PIPE_TEXTURE_CUBE)
197 numFaces = 6;
198 else
199 numFaces = 1;
200
201 for (i = v->min_lod; i <= v->max_lod; i++) {
202 for (k = 0; k < numFaces; k++) {
203 assert(i < ARRAY_SIZE(tex->view_age));
204 if (v->age < tex->view_age[i])
205 svga_texture_copy_handle(svga,
206 tex->handle, 0, 0, 0, i, k,
207 v->handle, 0, 0, 0, i - v->min_lod, k,
208 u_minify(tex->b.b.width0, i),
209 u_minify(tex->b.b.height0, i),
210 u_minify(tex->b.b.depth0, i));
211 }
212 }
213
214 v->age = age;
215 }
216
217
218 void
svga_destroy_sampler_view_priv(struct svga_sampler_view * v)219 svga_destroy_sampler_view_priv(struct svga_sampler_view *v)
220 {
221 struct svga_texture *tex = svga_texture(v->texture);
222
223 if (v->handle != tex->handle) {
224 struct svga_screen *ss = svga_screen(v->texture->screen);
225 SVGA_DBG(DEBUG_DMA, "unref sid %p (sampler view)\n", v->handle);
226 svga_screen_surface_destroy(ss, &v->key, &v->handle);
227 }
228
229 /* Note: we're not refcounting the texture resource here to avoid
230 * a circular dependency.
231 */
232 v->texture = NULL;
233
234 FREE(v);
235 }
236