1 /**************************************************************************
3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21 * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
22 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
29 * Keith Whitwell <keith@tungstengraphics.com>
30 * Michel Dänzer <michel@tungstengraphics.com>
33 #include "pipe/p_context.h"
34 #include "pipe/p_defines.h"
35 #include "pipe/p_inlines.h"
36 #include "pipe/p_util.h"
37 #include "pipe/p_winsys.h"
39 #include "sp_context.h"
41 #include "sp_texture.h"
42 #include "sp_tile_cache.h"
43 #include "sp_screen.h"
46 /* Simple, maximally packed layout.
49 static unsigned minify( unsigned d
)
55 /* Conventional allocation path for non-display textures:
58 softpipe_texture_layout(struct pipe_screen
*screen
,
59 struct softpipe_texture
* spt
)
61 struct pipe_winsys
*ws
= screen
->winsys
;
62 struct pipe_texture
*pt
= &spt
->base
;
64 unsigned width
= pt
->width
[0];
65 unsigned height
= pt
->height
[0];
66 unsigned depth
= pt
->depth
[0];
68 unsigned buffer_size
= 0;
70 for (level
= 0; level
<= pt
->last_level
; level
++) {
71 pt
->width
[level
] = width
;
72 pt
->height
[level
] = height
;
73 pt
->depth
[level
] = depth
;
74 spt
->pitch
[level
] = width
;
76 spt
->level_offset
[level
] = buffer_size
;
78 buffer_size
+= (((pt
->compressed
) ? MAX2(1, height
/4) : height
) *
79 ((pt
->target
== PIPE_TEXTURE_CUBE
) ? 6 : depth
) *
82 width
= minify(width
);
83 height
= minify(height
);
84 depth
= minify(depth
);
87 spt
->buffer
= ws
->buffer_create(ws
, 32,
88 PIPE_BUFFER_USAGE_PIXEL
,
91 return spt
->buffer
!= NULL
;
96 /* Hack it up to use the old winsys->surface_alloc_storage()
100 softpipe_displaytarget_layout(struct pipe_screen
*screen
,
101 struct softpipe_texture
* spt
)
103 struct pipe_winsys
*ws
= screen
->winsys
;
104 struct pipe_surface surf
;
105 unsigned flags
= (PIPE_BUFFER_USAGE_CPU_READ
|
106 PIPE_BUFFER_USAGE_CPU_WRITE
|
107 PIPE_BUFFER_USAGE_GPU_READ
|
108 PIPE_BUFFER_USAGE_GPU_WRITE
);
111 memset(&surf
, 0, sizeof(surf
));
113 ws
->surface_alloc_storage( ws
,
119 spt
->base
.tex_usage
);
121 /* Now extract the goodies:
123 spt
->buffer
= surf
.buffer
;
124 spt
->pitch
[0] = surf
.pitch
;
126 return spt
->buffer
!= NULL
;
133 static struct pipe_texture
*
134 softpipe_texture_create(struct pipe_screen
*screen
,
135 const struct pipe_texture
*templat
)
137 struct softpipe_texture
*spt
= CALLOC_STRUCT(softpipe_texture
);
141 spt
->base
= *templat
;
142 spt
->base
.refcount
= 1;
143 spt
->base
.screen
= screen
;
145 if (spt
->base
.tex_usage
& PIPE_TEXTURE_USAGE_DISPLAY_TARGET
) {
146 if (!softpipe_displaytarget_layout(screen
, spt
))
150 if (!softpipe_texture_layout(screen
, spt
))
154 assert(spt
->base
.refcount
== 1);
164 softpipe_texture_release(struct pipe_screen
*screen
,
165 struct pipe_texture
**pt
)
170 if (--(*pt
)->refcount
<= 0) {
171 struct softpipe_texture
*spt
= softpipe_texture(*pt
);
173 pipe_buffer_reference(screen
->winsys
, &spt
->buffer
, NULL
);
180 static struct pipe_surface
*
181 softpipe_get_tex_surface(struct pipe_screen
*screen
,
182 struct pipe_texture
*pt
,
183 unsigned face
, unsigned level
, unsigned zslice
,
186 struct pipe_winsys
*ws
= screen
->winsys
;
187 struct softpipe_texture
*spt
= softpipe_texture(pt
);
188 struct pipe_surface
*ps
;
190 assert(level
<= pt
->last_level
);
192 ps
= ws
->surface_alloc(ws
);
194 assert(ps
->refcount
);
196 pipe_buffer_reference(ws
, &ps
->buffer
, spt
->buffer
);
197 ps
->format
= pt
->format
;
199 ps
->width
= pt
->width
[level
];
200 ps
->height
= pt
->height
[level
];
201 ps
->pitch
= ps
->width
;
202 ps
->offset
= spt
->level_offset
[level
];
205 /* Because we are softpipe, anything that the state tracker
206 * thought was going to be done with the GPU will actually get
207 * done with the CPU. Let's adjust the flags to take that into
210 if (ps
->usage
& PIPE_BUFFER_USAGE_GPU_WRITE
)
211 ps
->usage
|= PIPE_BUFFER_USAGE_CPU_WRITE
;
213 if (ps
->usage
& PIPE_BUFFER_USAGE_GPU_READ
)
214 ps
->usage
|= PIPE_BUFFER_USAGE_CPU_READ
;
217 pipe_texture_reference(&ps
->texture
, pt
);
222 if (pt
->target
== PIPE_TEXTURE_CUBE
|| pt
->target
== PIPE_TEXTURE_3D
) {
223 ps
->offset
+= ((pt
->target
== PIPE_TEXTURE_CUBE
) ? face
: zslice
) *
224 (pt
->compressed
? ps
->height
/4 : ps
->height
) *
237 softpipe_tex_surface_release(struct pipe_screen
*screen
,
238 struct pipe_surface
**s
)
240 /* Effectively do the texture_update work here - if texture images
241 * needed post-processing to put them into hardware layout, this is
242 * where it would happen. For softpipe, nothing to do.
244 assert ((*s
)->texture
);
245 pipe_texture_reference(&(*s
)->texture
, NULL
);
247 screen
->winsys
->surface_release(screen
->winsys
, s
);
252 softpipe_surface_map( struct pipe_screen
*screen
,
253 struct pipe_surface
*surface
,
258 if (flags
& ~surface
->usage
) {
263 map
= screen
->winsys
->buffer_map( screen
->winsys
, surface
->buffer
, flags
);
267 /* May want to different things here depending on read/write nature
270 if (surface
->texture
&&
271 (flags
& PIPE_BUFFER_USAGE_CPU_WRITE
))
273 /* Do something to notify sharing contexts of a texture change.
274 * In softpipe, that would mean flushing the texture cache.
276 softpipe_screen(screen
)->timestamp
++;
279 return map
+ surface
->offset
;
284 softpipe_surface_unmap(struct pipe_screen
*screen
,
285 struct pipe_surface
*surface
)
287 screen
->winsys
->buffer_unmap( screen
->winsys
, surface
->buffer
);
292 softpipe_init_texture_funcs(struct softpipe_context
*sp
)
298 softpipe_init_screen_texture_funcs(struct pipe_screen
*screen
)
300 screen
->texture_create
= softpipe_texture_create
;
301 screen
->texture_release
= softpipe_texture_release
;
303 screen
->get_tex_surface
= softpipe_get_tex_surface
;
304 screen
->tex_surface_release
= softpipe_tex_surface_release
;
306 screen
->surface_map
= softpipe_surface_map
;
307 screen
->surface_unmap
= softpipe_surface_unmap
;