1 /**************************************************************************
3 * Copyright 2009 VMware, Inc.
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 VMWARE 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 **************************************************************************/
30 * Binner data structures and bin-related functions.
31 * Note: the "setup" code is concerned with building scenes while
32 * The "rast" code is concerned with consuming/executing scenes.
38 #include "os/os_thread.h"
39 #include "lp_tile_soa.h"
42 struct lp_scene_queue
;
44 /* We're limited to 2K by 2K for 32bit fixed point rasterization.
45 * Will need a 64-bit version for larger framebuffers.
47 #define MAXHEIGHT 2048
49 #define TILES_X (MAXWIDTH / TILE_SIZE)
50 #define TILES_Y (MAXHEIGHT / TILE_SIZE)
53 #define CMD_BLOCK_MAX 128
54 #define DATA_BLOCK_SIZE (16 * 1024 - sizeof(unsigned) - sizeof(void *))
58 /* switch to a non-pointer value for this:
60 typedef void (*lp_rast_cmd
)( struct lp_rasterizer_task
*,
61 const union lp_rast_cmd_arg
);
64 lp_rast_cmd cmd
[CMD_BLOCK_MAX
];
65 union lp_rast_cmd_arg arg
[CMD_BLOCK_MAX
];
67 struct cmd_block
*next
;
71 ubyte data
[DATA_BLOCK_SIZE
];
73 struct data_block
*next
;
76 struct cmd_block_list
{
77 struct cmd_block
*head
;
78 struct cmd_block
*tail
;
82 * For each screen tile we have one of these bins.
85 struct cmd_block_list commands
;
90 * This stores bulk data which is shared by all bins within a scene.
91 * Examples include triangle data and state data. The commands in
92 * the per-tile bins will point to chunks of data in this structure.
94 struct data_block_list
{
95 struct data_block
*head
;
96 struct data_block
*tail
;
100 /** List of texture references */
102 struct pipe_texture
*texture
;
103 struct texture_ref
*prev
, *next
; /**< linked list w/ u_simple_list.h */
108 * All bins and bin data are contained here.
109 * Per-bin data goes into the 'tile' bins.
110 * Shared data goes into the 'data' buffer.
112 * When there are multiple threads, will want to double-buffer between
116 struct pipe_context
*pipe
;
117 struct pipe_transfer
*cbuf_transfer
[PIPE_MAX_COLOR_BUFS
];
118 struct pipe_transfer
*zsbuf_transfer
;
120 /* Scene's buffers are mapped at the time the scene is enqueued:
122 void *cbuf_map
[PIPE_MAX_COLOR_BUFS
];
125 /** the framebuffer to render the scene into */
126 struct pipe_framebuffer_state fb
;
128 /** list of textures referenced by the scene commands */
129 struct texture_ref textures
;
134 * Number of active tiles in each dimension.
135 * This basically the framebuffer size divided by tile size
137 unsigned tiles_x
, tiles_y
;
139 int curr_x
, curr_y
; /**< for iterating over bins */
142 /* Where to place this scene once it has been rasterized:
144 struct lp_scene_queue
*empty_queue
;
146 struct cmd_bin tile
[TILES_X
][TILES_Y
];
147 struct data_block_list data
;
152 struct lp_scene
*lp_scene_create(struct pipe_context
*pipe
,
153 struct lp_scene_queue
*empty_queue
);
155 void lp_scene_destroy(struct lp_scene
*scene
);
159 boolean
lp_scene_is_empty(struct lp_scene
*scene
);
161 void lp_scene_reset(struct lp_scene
*scene
);
164 void lp_bin_new_data_block( struct data_block_list
*list
);
166 void lp_bin_new_cmd_block( struct cmd_block_list
*list
);
168 unsigned lp_scene_data_size( const struct lp_scene
*scene
);
170 unsigned lp_scene_bin_size( const struct lp_scene
*scene
, unsigned x
, unsigned y
);
172 void lp_scene_texture_reference( struct lp_scene
*scene
,
173 struct pipe_texture
*texture
);
175 boolean
lp_scene_is_texture_referenced( const struct lp_scene
*scene
,
176 const struct pipe_texture
*texture
);
180 * Allocate space for a command/data in the bin's data buffer.
181 * Grow the block list if needed.
184 lp_scene_alloc( struct lp_scene
*scene
, unsigned size
)
186 struct data_block_list
*list
= &scene
->data
;
188 if (list
->tail
->used
+ size
> DATA_BLOCK_SIZE
) {
189 lp_bin_new_data_block( list
);
193 struct data_block
*tail
= list
->tail
;
194 ubyte
*data
= tail
->data
+ tail
->used
;
202 * As above, but with specific alignment.
205 lp_scene_alloc_aligned( struct lp_scene
*scene
, unsigned size
,
208 struct data_block_list
*list
= &scene
->data
;
210 if (list
->tail
->used
+ size
+ alignment
- 1 > DATA_BLOCK_SIZE
) {
211 lp_bin_new_data_block( list
);
215 struct data_block
*tail
= list
->tail
;
216 ubyte
*data
= tail
->data
+ tail
->used
;
217 unsigned offset
= (((uintptr_t)data
+ alignment
- 1) & ~(alignment
- 1)) - (uintptr_t)data
;
218 tail
->used
+= offset
+ size
;
219 return data
+ offset
;
224 /* Put back data if we decide not to use it, eg. culled triangles.
227 lp_scene_putback_data( struct lp_scene
*scene
, unsigned size
)
229 struct data_block_list
*list
= &scene
->data
;
230 assert(list
->tail
->used
>= size
);
231 list
->tail
->used
-= size
;
235 /** Return pointer to a particular tile's bin. */
236 static INLINE
struct cmd_bin
*
237 lp_scene_get_bin(struct lp_scene
*scene
, unsigned x
, unsigned y
)
239 return &scene
->tile
[x
][y
];
243 /** Remove all commands from a bin */
245 lp_scene_bin_reset(struct lp_scene
*scene
, unsigned x
, unsigned y
);
248 /* Add a command to bin[x][y].
251 lp_scene_bin_command( struct lp_scene
*scene
,
252 unsigned x
, unsigned y
,
254 union lp_rast_cmd_arg arg
)
256 struct cmd_bin
*bin
= lp_scene_get_bin(scene
, x
, y
);
257 struct cmd_block_list
*list
= &bin
->commands
;
259 assert(x
< scene
->tiles_x
);
260 assert(y
< scene
->tiles_y
);
262 if (list
->tail
->count
== CMD_BLOCK_MAX
) {
263 lp_bin_new_cmd_block( list
);
267 struct cmd_block
*tail
= list
->tail
;
268 unsigned i
= tail
->count
;
276 /* Add a command to all active bins.
279 lp_scene_bin_everywhere( struct lp_scene
*scene
,
281 const union lp_rast_cmd_arg arg
)
284 for (i
= 0; i
< scene
->tiles_x
; i
++)
285 for (j
= 0; j
< scene
->tiles_y
; j
++)
286 lp_scene_bin_command( scene
, i
, j
, cmd
, arg
);
291 lp_scene_bin_state_command( struct lp_scene
*scene
,
293 const union lp_rast_cmd_arg arg
);
296 static INLINE
unsigned
297 lp_scene_get_num_bins( const struct lp_scene
*scene
)
299 return scene
->tiles_x
* scene
->tiles_y
;
304 lp_scene_bin_iter_begin( struct lp_scene
*scene
);
307 lp_scene_bin_iter_next( struct lp_scene
*scene
, int *bin_x
, int *bin_y
);
310 lp_scene_rasterize( struct lp_scene
*scene
,
311 struct lp_rasterizer
*rast
,
312 boolean write_depth
);
315 lp_scene_begin_binning( struct lp_scene
*scene
,
316 struct pipe_framebuffer_state
*fb
);
318 #endif /* LP_BIN_H */