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/**************************************************************************
*
* Copyright 2009 VMware, Inc.
* 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 VMWARE 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.
*
**************************************************************************/
/**
* Binner data structures and bin-related functions.
* Note: the "setup" code is concerned with building bins while
* The "rast" code is concerned with consuming/executing bins.
*/
#ifndef LP_BIN_H
#define LP_BIN_H
#include "lp_tile_soa.h"
#include "lp_rast.h"
/* We're limited to 2K by 2K for 32bit fixed point rasterization.
* Will need a 64-bit version for larger framebuffers.
*/
#define MAXHEIGHT 2048
#define MAXWIDTH 2048
#define TILES_X (MAXWIDTH / TILE_SIZE)
#define TILES_Y (MAXHEIGHT / TILE_SIZE)
#define CMD_BLOCK_MAX 128
#define DATA_BLOCK_SIZE (16 * 1024 - sizeof(unsigned) - sizeof(void *))
/* switch to a non-pointer value for this:
*/
typedef void (*lp_rast_cmd)( struct lp_rasterizer *, const union lp_rast_cmd_arg );
struct cmd_block {
lp_rast_cmd cmd[CMD_BLOCK_MAX];
union lp_rast_cmd_arg arg[CMD_BLOCK_MAX];
unsigned count;
struct cmd_block *next;
};
struct data_block {
ubyte data[DATA_BLOCK_SIZE];
unsigned used;
struct data_block *next;
};
struct cmd_block_list {
struct cmd_block *head;
struct cmd_block *tail;
};
/**
* For each screen tile we have one of these bins.
*/
struct cmd_bin {
struct cmd_block_list commands;
};
/**
* This stores bulk data which is shared by all bins.
* Examples include triangle data and state data. The commands in
* the per-tile bins will point to chunks of data in this structure.
*/
struct data_block_list {
struct data_block *head;
struct data_block *tail;
};
/**
* All bins and bin data are contained here.
* Per-bin data goes into the 'tile' bins.
* Shared bin data goes into the 'data' buffer.
* When there are multiple threads, will want to double-buffer the
* bin arrays:
*/
struct lp_bins {
struct cmd_bin tile[TILES_X][TILES_Y];
struct data_block_list data;
};
void lp_init_bins(struct lp_bins *bins);
void lp_reset_bins(struct lp_bins *bins, unsigned tiles_x, unsigned tiles_y);
void lp_free_bin_data(struct lp_bins *bins);
void lp_bin_new_data_block( struct data_block_list *list );
void lp_bin_new_cmd_block( struct cmd_block_list *list );
/**
* Allocate space for a command/data in the bin's data buffer.
* Grow the block list if needed.
*/
static INLINE void *
lp_bin_alloc( struct lp_bins *bins, unsigned size)
{
struct data_block_list *list = &bins->data;
if (list->tail->used + size > DATA_BLOCK_SIZE) {
lp_bin_new_data_block( list );
}
{
struct data_block *tail = list->tail;
ubyte *data = tail->data + tail->used;
tail->used += size;
return data;
}
}
/**
* As above, but with specific alignment.
*/
static INLINE void *
lp_bin_alloc_aligned( struct lp_bins *bins, unsigned size,
unsigned alignment )
{
struct data_block_list *list = &bins->data;
if (list->tail->used + size + alignment - 1 > DATA_BLOCK_SIZE) {
lp_bin_new_data_block( list );
}
{
struct data_block *tail = list->tail;
ubyte *data = tail->data + tail->used;
unsigned offset = (((uintptr_t)data + alignment - 1) & ~(alignment - 1)) - (uintptr_t)data;
tail->used += offset + size;
return data + offset;
}
}
/* Put back data if we decide not to use it, eg. culled triangles.
*/
static INLINE void
lp_bin_putback_data( struct lp_bins *bins, unsigned size)
{
struct data_block_list *list = &bins->data;
assert(list->tail->used >= size);
list->tail->used -= size;
}
/** Return pointer to a particular tile's bin. */
static INLINE struct cmd_bin *
lp_get_bin(struct lp_bins *bins, unsigned x, unsigned y)
{
return &bins->tile[x][y];
}
/* Add a command to bin[x][y].
*/
static INLINE void
lp_bin_command( struct lp_bins *bins,
unsigned x, unsigned y,
lp_rast_cmd cmd,
union lp_rast_cmd_arg arg )
{
struct cmd_bin *bin = lp_get_bin(bins, x, y);
struct cmd_block_list *list = &bin->commands;
if (list->tail->count == CMD_BLOCK_MAX) {
lp_bin_new_cmd_block( list );
}
{
struct cmd_block *tail = list->tail;
unsigned i = tail->count;
tail->cmd[i] = cmd;
tail->arg[i] = arg;
tail->count++;
}
}
#endif /* LP_BIN_H */
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