forked from KolibriOS/kolibrios
297 lines
9.1 KiB
C
297 lines
9.1 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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/**
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* Texture tile caching.
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*
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* Author:
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* Brian Paul
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*/
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#include "util/u_inlines.h"
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#include "util/u_memory.h"
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#include "util/u_tile.h"
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#include "util/u_format.h"
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#include "util/u_math.h"
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#include "sp_context.h"
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#include "sp_texture.h"
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#include "sp_tex_tile_cache.h"
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struct softpipe_tex_tile_cache *
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sp_create_tex_tile_cache( struct pipe_context *pipe )
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{
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struct softpipe_tex_tile_cache *tc;
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uint pos;
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/* make sure max texture size works */
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assert((TEX_TILE_SIZE << TEX_ADDR_BITS) >= (1 << (SP_MAX_TEXTURE_2D_LEVELS-1)));
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tc = CALLOC_STRUCT( softpipe_tex_tile_cache );
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if (tc) {
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tc->pipe = pipe;
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for (pos = 0; pos < Elements(tc->entries); pos++) {
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tc->entries[pos].addr.bits.invalid = 1;
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}
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tc->last_tile = &tc->entries[0]; /* any tile */
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}
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return tc;
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}
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void
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sp_destroy_tex_tile_cache(struct softpipe_tex_tile_cache *tc)
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{
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if (tc) {
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uint pos;
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for (pos = 0; pos < Elements(tc->entries); pos++) {
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/*assert(tc->entries[pos].x < 0);*/
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}
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if (tc->transfer) {
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tc->pipe->transfer_unmap(tc->pipe, tc->transfer);
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}
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if (tc->tex_trans) {
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tc->pipe->transfer_unmap(tc->pipe, tc->tex_trans);
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}
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FREE( tc );
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}
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}
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/**
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* Invalidate all cached tiles for the cached texture.
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* Should be called when the texture is modified.
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*/
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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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{
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unsigned i;
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assert(tc);
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assert(tc->texture);
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for (i = 0; i < Elements(tc->entries); i++) {
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tc->entries[i].addr.bits.invalid = 1;
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}
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}
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static boolean
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sp_tex_tile_is_compat_view(struct softpipe_tex_tile_cache *tc,
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struct pipe_sampler_view *view)
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{
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if (!view)
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return FALSE;
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return (tc->texture == view->texture &&
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tc->format == view->format &&
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tc->swizzle_r == view->swizzle_r &&
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tc->swizzle_g == view->swizzle_g &&
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tc->swizzle_b == view->swizzle_b &&
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tc->swizzle_a == view->swizzle_a);
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}
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/**
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* Specify the sampler view to cache.
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*/
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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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{
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struct pipe_resource *texture = view ? view->texture : NULL;
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uint i;
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assert(!tc->transfer);
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if (!sp_tex_tile_is_compat_view(tc, view)) {
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pipe_resource_reference(&tc->texture, texture);
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if (tc->tex_trans_map) {
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tc->pipe->transfer_unmap(tc->pipe, tc->tex_trans);
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tc->tex_trans = NULL;
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tc->tex_trans_map = NULL;
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}
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if (view) {
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tc->swizzle_r = view->swizzle_r;
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tc->swizzle_g = view->swizzle_g;
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tc->swizzle_b = view->swizzle_b;
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tc->swizzle_a = view->swizzle_a;
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tc->format = view->format;
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}
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/* mark as entries as invalid/empty */
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/* XXX we should try to avoid this when the teximage hasn't changed */
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for (i = 0; i < Elements(tc->entries); i++) {
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tc->entries[i].addr.bits.invalid = 1;
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}
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tc->tex_face = -1; /* any invalid value here */
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}
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}
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/**
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* Flush the tile cache: write all dirty tiles back to the transfer.
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* any tiles "flagged" as cleared will be "really" cleared.
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*/
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void
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sp_flush_tex_tile_cache(struct softpipe_tex_tile_cache *tc)
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{
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int pos;
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if (tc->texture) {
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/* caching a texture, mark all entries as empty */
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for (pos = 0; pos < Elements(tc->entries); pos++) {
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tc->entries[pos].addr.bits.invalid = 1;
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}
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tc->tex_face = -1;
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}
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}
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/**
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* Given the texture face, level, zslice, x and y values, compute
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* the cache entry position/index where we'd hope to find the
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* cached texture tile.
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* This is basically a direct-map cache.
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* XXX There's probably lots of ways in which we can improve this.
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*/
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static INLINE uint
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tex_cache_pos( union tex_tile_address addr )
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{
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uint entry = (addr.bits.x +
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addr.bits.y * 9 +
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addr.bits.z * 3 +
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addr.bits.face +
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addr.bits.level * 7);
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return entry % NUM_TEX_TILE_ENTRIES;
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}
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/**
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* Similar to sp_get_cached_tile() but for textures.
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* Tiles are read-only and indexed with more params.
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*/
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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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{
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struct softpipe_tex_cached_tile *tile;
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boolean zs = util_format_is_depth_or_stencil(tc->format);
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tile = tc->entries + tex_cache_pos( addr );
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if (addr.value != tile->addr.value) {
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/* cache miss. Most misses are because we've invalidated the
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* texture cache previously -- most commonly on binding a new
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* texture. Currently we effectively flush the cache on texture
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* bind.
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*/
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#if 0
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_debug_printf("miss at %u: x=%d y=%d z=%d face=%d level=%d\n"
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" tile %u: x=%d y=%d z=%d face=%d level=%d\n",
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pos, x/TILE_SIZE, y/TILE_SIZE, z, face, level,
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pos, tile->addr.bits.x, tile->addr.bits.y, tile->z, tile->face, tile->level);
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#endif
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/* check if we need to get a new transfer */
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if (!tc->tex_trans ||
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tc->tex_face != addr.bits.face ||
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tc->tex_level != addr.bits.level ||
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tc->tex_z != addr.bits.z) {
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/* get new transfer (view into texture) */
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unsigned width, height, layer;
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if (tc->tex_trans_map) {
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tc->pipe->transfer_unmap(tc->pipe, tc->tex_trans);
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tc->tex_trans = NULL;
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tc->tex_trans_map = NULL;
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}
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width = u_minify(tc->texture->width0, addr.bits.level);
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if (tc->texture->target == PIPE_TEXTURE_1D_ARRAY) {
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height = tc->texture->array_size;
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layer = 0;
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}
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else {
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height = u_minify(tc->texture->height0, addr.bits.level);
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layer = addr.bits.face + addr.bits.z;
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}
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tc->tex_trans_map =
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pipe_transfer_map(tc->pipe, tc->texture,
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addr.bits.level,
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layer,
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PIPE_TRANSFER_READ | PIPE_TRANSFER_UNSYNCHRONIZED,
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0, 0, width, height, &tc->tex_trans);
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tc->tex_face = addr.bits.face;
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tc->tex_level = addr.bits.level;
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tc->tex_z = addr.bits.z;
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}
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/* Get tile from the transfer (view into texture), explicitly passing
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* the image format.
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*/
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if (!zs && util_format_is_pure_uint(tc->format)) {
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pipe_get_tile_ui_format(tc->tex_trans, tc->tex_trans_map,
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addr.bits.x * TEX_TILE_SIZE,
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addr.bits.y * TEX_TILE_SIZE,
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TEX_TILE_SIZE,
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TEX_TILE_SIZE,
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tc->format,
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(unsigned *) tile->data.colorui);
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} else if (!zs && util_format_is_pure_sint(tc->format)) {
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pipe_get_tile_i_format(tc->tex_trans, tc->tex_trans_map,
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addr.bits.x * TEX_TILE_SIZE,
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addr.bits.y * TEX_TILE_SIZE,
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TEX_TILE_SIZE,
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TEX_TILE_SIZE,
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tc->format,
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(int *) tile->data.colori);
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} else {
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pipe_get_tile_rgba_format(tc->tex_trans, tc->tex_trans_map,
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addr.bits.x * TEX_TILE_SIZE,
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addr.bits.y * TEX_TILE_SIZE,
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TEX_TILE_SIZE,
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TEX_TILE_SIZE,
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tc->format,
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(float *) tile->data.color);
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}
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tile->addr = addr;
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}
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tc->last_tile = tile;
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return tile;
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}
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