forked from KolibriOS/kolibrios
160 lines
4.5 KiB
C
160 lines
4.5 KiB
C
/**************************************************************************
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*
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* Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
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* All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sub license, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial portions
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* of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
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* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
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* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef SP_TILE_CACHE_H
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#define SP_TILE_CACHE_H
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#include "pipe/p_compiler.h"
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#include "sp_texture.h"
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struct softpipe_tile_cache;
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/**
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* Cache tile size (width and height). This needs to be a power of two.
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*/
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#define TILE_SIZE_LOG2 6
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#define TILE_SIZE (1 << TILE_SIZE_LOG2)
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#define TILE_ADDR_BITS (SP_MAX_TEXTURE_2D_LEVELS - 1 - TILE_SIZE_LOG2)
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/**
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* Surface tile address as a union for fast compares.
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*/
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union tile_address {
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struct {
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unsigned x:TILE_ADDR_BITS; /* 16K / TILE_SIZE */
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unsigned y:TILE_ADDR_BITS; /* 16K / TILE_SIZE */
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unsigned invalid:1;
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unsigned pad:15;
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} bits;
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unsigned value;
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};
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struct softpipe_cached_tile
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{
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union {
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float color[TILE_SIZE][TILE_SIZE][4];
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uint color32[TILE_SIZE][TILE_SIZE];
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uint depth32[TILE_SIZE][TILE_SIZE];
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ushort depth16[TILE_SIZE][TILE_SIZE];
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ubyte stencil8[TILE_SIZE][TILE_SIZE];
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uint colorui128[TILE_SIZE][TILE_SIZE][4];
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int colori128[TILE_SIZE][TILE_SIZE][4];
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uint64_t depth64[TILE_SIZE][TILE_SIZE];
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ubyte any[1];
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} data;
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};
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#define NUM_ENTRIES 50
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struct softpipe_tile_cache
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{
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struct pipe_context *pipe;
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struct pipe_surface *surface; /**< the surface we're caching */
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struct pipe_transfer *transfer;
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void *transfer_map;
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union tile_address tile_addrs[NUM_ENTRIES];
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struct softpipe_cached_tile *entries[NUM_ENTRIES];
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uint clear_flags[(MAX_WIDTH / TILE_SIZE) * (MAX_HEIGHT / TILE_SIZE) / 32];
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union pipe_color_union clear_color; /**< for color bufs */
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uint64_t clear_val; /**< for z+stencil */
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boolean depth_stencil; /**< Is the surface a depth/stencil format? */
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struct softpipe_cached_tile *tile; /**< scratch tile for clears */
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union tile_address last_tile_addr;
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struct softpipe_cached_tile *last_tile; /**< most recently retrieved tile */
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};
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extern struct softpipe_tile_cache *
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sp_create_tile_cache( struct pipe_context *pipe );
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extern void
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sp_destroy_tile_cache(struct softpipe_tile_cache *tc);
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extern void
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sp_tile_cache_set_surface(struct softpipe_tile_cache *tc,
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struct pipe_surface *sps);
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extern struct pipe_surface *
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sp_tile_cache_get_surface(struct softpipe_tile_cache *tc);
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extern void
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sp_flush_tile_cache(struct softpipe_tile_cache *tc);
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extern void
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sp_tile_cache_clear(struct softpipe_tile_cache *tc,
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const union pipe_color_union *color,
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uint64_t clearValue);
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extern struct softpipe_cached_tile *
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sp_find_cached_tile(struct softpipe_tile_cache *tc,
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union tile_address addr );
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static INLINE union tile_address
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tile_address( unsigned x,
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unsigned y )
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{
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union tile_address addr;
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addr.value = 0;
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addr.bits.x = x / TILE_SIZE;
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addr.bits.y = y / TILE_SIZE;
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return addr;
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}
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/* Quickly retrieve tile if it matches last lookup.
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*/
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static INLINE struct softpipe_cached_tile *
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sp_get_cached_tile(struct softpipe_tile_cache *tc,
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int x, int y )
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{
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union tile_address addr = tile_address( x, y );
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if (tc->last_tile_addr.value == addr.value)
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return tc->last_tile;
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return sp_find_cached_tile( tc, addr );
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}
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#endif /* SP_TILE_CACHE_H */
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