summaryrefslogtreecommitdiff
path: root/src/gallium/drivers/softpipe/sp_texture.c
blob: 256586ec886e8026301cd3d6bff068ce4705ccc2 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
/**************************************************************************
 * 
 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
 * All Rights Reserved.
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sub license, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 * 
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 * 
 **************************************************************************/
 /*
  * Authors:
  *   Keith Whitwell <keith@tungstengraphics.com>
  *   Michel Dänzer <michel@tungstengraphics.com>
  */

#include "pipe/p_context.h"
#include "pipe/p_defines.h"
#include "pipe/p_inlines.h"
#include "pipe/p_util.h"
#include "pipe/p_winsys.h"

#include "sp_context.h"
#include "sp_state.h"
#include "sp_texture.h"
#include "sp_tile_cache.h"


/* Simple, maximally packed layout.
 */

static unsigned minify( unsigned d )
{
   return MAX2(1, d>>1);
}


static void
softpipe_texture_layout(struct softpipe_texture * spt)
{
   struct pipe_texture *pt = &spt->base;
   unsigned level;
   unsigned width = pt->width[0];
   unsigned height = pt->height[0];
   unsigned depth = pt->depth[0];

   spt->buffer_size = 0;

   for (level = 0; level <= pt->last_level; level++) {
      pt->width[level] = width;
      pt->height[level] = height;
      pt->depth[level] = depth;

      spt->level_offset[level] = spt->buffer_size;

      spt->buffer_size += ((pt->compressed) ? MAX2(1, height/4) : height) *
			  ((pt->target == PIPE_TEXTURE_CUBE) ? 6 : depth) *
			  width * pt->cpp;

      width  = minify(width);
      height = minify(height);
      depth = minify(depth);
   }
}


static struct pipe_texture *
softpipe_texture_create(struct pipe_screen *screen,
                        const struct pipe_texture *templat)
{
   struct pipe_winsys *ws = screen->winsys;
   struct softpipe_texture *spt = CALLOC_STRUCT(softpipe_texture);
   if (!spt)
      return NULL;

   spt->base = *templat;
   spt->base.refcount = 1;
   spt->base.screen = screen;

   softpipe_texture_layout(spt);

   spt->buffer = ws->buffer_create(ws, 32,
                                   PIPE_BUFFER_USAGE_PIXEL,
                                   spt->buffer_size);
   if (!spt->buffer) {
      FREE(spt);
      return NULL;
   }

   assert(spt->base.refcount == 1);

   return &spt->base;
}


static void
softpipe_texture_release(struct pipe_screen *screen,
                         struct pipe_texture **pt)
{
   if (!*pt)
      return;

   /*
   DBG("%s %p refcount will be %d\n",
       __FUNCTION__, (void *) *pt, (*pt)->refcount - 1);
   */
   if (--(*pt)->refcount <= 0) {
      struct softpipe_texture *spt = softpipe_texture(*pt);

      /*
      DBG("%s deleting %p\n", __FUNCTION__, (void *) spt);
      */

      pipe_buffer_reference(screen->winsys, &spt->buffer, NULL);

      FREE(spt);
   }
   *pt = NULL;
}


static struct pipe_surface *
softpipe_get_tex_surface(struct pipe_screen *screen,
                         struct pipe_texture *pt,
                         unsigned face, unsigned level, unsigned zslice)
{
   struct pipe_winsys *ws = screen->winsys;
   struct softpipe_texture *spt = softpipe_texture(pt);
   struct pipe_surface *ps;

   assert(level <= pt->last_level);

   ps = ws->surface_alloc(ws);
   if (ps) {
      assert(ps->refcount);
      assert(ps->winsys);
      pipe_buffer_reference(ws, &ps->buffer, spt->buffer);
      ps->format = pt->format;
      ps->cpp = pt->cpp;
      ps->width = pt->width[level];
      ps->height = pt->height[level];
      ps->pitch = ps->width;
      ps->offset = spt->level_offset[level];

      if (pt->target == PIPE_TEXTURE_CUBE || pt->target == PIPE_TEXTURE_3D) {
	 ps->offset += ((pt->target == PIPE_TEXTURE_CUBE) ? face : zslice) *
		       (pt->compressed ? ps->height/4 : ps->height) *
		       ps->width * ps->cpp;
      }
      else {
	 assert(face == 0);
	 assert(zslice == 0);
      }
   }
   return ps;
}


static void
softpipe_texture_update(struct pipe_context *pipe,
                        struct pipe_texture *texture,
                        uint face, uint levelsMask)
{
   struct softpipe_context *softpipe = softpipe_context(pipe);
   uint unit;
   for (unit = 0; unit < softpipe->num_textures; unit++) {
      if (softpipe->texture[unit] == texture) {
         sp_flush_tile_cache(softpipe, softpipe->tex_cache[unit]);
      }
   }
}


void
softpipe_init_texture_funcs( struct softpipe_context *softpipe )
{
   softpipe->pipe.texture_update = softpipe_texture_update;
}


void
softpipe_init_screen_texture_funcs(struct pipe_screen *screen)
{
   screen->texture_create = softpipe_texture_create;
   screen->texture_release = softpipe_texture_release;
   screen->get_tex_surface = softpipe_get_tex_surface;
}