forked from KolibriOS/kolibrios
165 lines
4.6 KiB
C
165 lines
4.6 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_TEX_TILE_CACHE_H
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#define SP_TEX_TILE_CACHE_H
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#include "pipe/p_compiler.h"
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#include "sp_limits.h"
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struct softpipe_context;
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struct softpipe_tex_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 TEX_TILE_SIZE_LOG2 5
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#define TEX_TILE_SIZE (1 << TEX_TILE_SIZE_LOG2)
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#define TEX_ADDR_BITS (SP_MAX_TEXTURE_2D_LEVELS - 1 - TEX_TILE_SIZE_LOG2)
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#define TEX_Z_BITS (SP_MAX_TEXTURE_2D_LEVELS - 1)
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/**
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* Texture tile address as a union for fast compares.
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*/
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union tex_tile_address {
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struct {
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unsigned x:TEX_ADDR_BITS; /* 16K / TILE_SIZE */
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unsigned y:TEX_ADDR_BITS; /* 16K / TILE_SIZE */
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unsigned z:TEX_Z_BITS; /* 16K -- z not tiled */
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unsigned face:3;
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unsigned level:4;
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unsigned invalid:1;
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} bits;
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uint64_t value;
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};
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struct softpipe_tex_cached_tile
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{
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union tex_tile_address addr;
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union {
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float color[TEX_TILE_SIZE][TEX_TILE_SIZE][4];
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unsigned int colorui[TEX_TILE_SIZE][TEX_TILE_SIZE][4];
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int colori[TEX_TILE_SIZE][TEX_TILE_SIZE][4];
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} data;
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};
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/*
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* The number of cache entries.
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* Should not be decreased to lower than 16, and even that
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* seems too low to avoid cache thrashing in some cases (because
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* the cache is direct mapped, see tex_cache_pos() function).
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*/
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#define NUM_TEX_TILE_ENTRIES 16
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struct softpipe_tex_tile_cache
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{
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struct pipe_context *pipe;
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struct pipe_transfer *transfer;
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void *transfer_map;
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struct pipe_resource *texture; /**< if caching a texture */
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unsigned timestamp;
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struct softpipe_tex_cached_tile entries[NUM_TEX_TILE_ENTRIES];
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struct pipe_transfer *tex_trans;
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void *tex_trans_map;
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int tex_face, tex_level, tex_z;
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unsigned swizzle_r;
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unsigned swizzle_g;
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unsigned swizzle_b;
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unsigned swizzle_a;
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enum pipe_format format;
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struct softpipe_tex_cached_tile *last_tile; /**< most recently retrieved tile */
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};
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extern struct softpipe_tex_tile_cache *
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sp_create_tex_tile_cache( struct pipe_context *pipe );
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extern void
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sp_destroy_tex_tile_cache(struct softpipe_tex_tile_cache *tc);
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extern void
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sp_tex_tile_cache_set_sampler_view(struct softpipe_tex_tile_cache *tc,
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struct pipe_sampler_view *view);
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void
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sp_tex_tile_cache_validate_texture(struct softpipe_tex_tile_cache *tc);
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extern void
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sp_flush_tex_tile_cache(struct softpipe_tex_tile_cache *tc);
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extern const struct softpipe_tex_cached_tile *
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sp_find_cached_tile_tex(struct softpipe_tex_tile_cache *tc,
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union tex_tile_address addr );
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static INLINE union tex_tile_address
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tex_tile_address( unsigned x,
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unsigned y,
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unsigned z,
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unsigned face,
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unsigned level )
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{
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union tex_tile_address addr;
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addr.value = 0;
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addr.bits.x = x / TEX_TILE_SIZE;
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addr.bits.y = y / TEX_TILE_SIZE;
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addr.bits.z = z;
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addr.bits.face = face;
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addr.bits.level = level;
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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 const struct softpipe_tex_cached_tile *
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sp_get_cached_tile_tex(struct softpipe_tex_tile_cache *tc,
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union tex_tile_address addr )
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{
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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_tex( tc, addr );
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}
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#endif /* SP_TEX_TILE_CACHE_H */
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