From 013df5849897e71f62a0df12691f19f0d56cbdf3 Mon Sep 17 00:00:00 2001 From: Dmitriy Nester Date: Thu, 27 Feb 2020 15:28:50 +0200 Subject: [PATCH] i965: replace fnv1a hash function with xxhash xxhash is faster than fnv1a in almost all circumstances, so we're switching to it globally. Signed-off-by: Dmytro Nester Reviewed-by: Eric Anholt Part-of: --- src/mesa/drivers/dri/i965/brw_program_cache.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/src/mesa/drivers/dri/i965/brw_program_cache.c b/src/mesa/drivers/dri/i965/brw_program_cache.c index c1bdaab591c..90999ab0a4f 100644 --- a/src/mesa/drivers/dri/i965/brw_program_cache.c +++ b/src/mesa/drivers/dri/i965/brw_program_cache.c @@ -54,6 +54,8 @@ #include "brw_program.h" #include "compiler/brw_eu.h" #include "util/u_memory.h" +#define XXH_INLINE_ALL +#include "util/xxhash.h" #define FILE_DEBUG_FLAG DEBUG_STATE @@ -96,9 +98,9 @@ brw_stage_cache_id(gl_shader_stage stage) static GLuint hash_key(struct brw_cache_item *item) { - uint32_t hash = _mesa_fnv32_1a_offset_bias; - hash = _mesa_fnv32_1a_accumulate(hash, item->cache_id); - hash = _mesa_fnv32_1a_accumulate_block(hash, item->key, item->key_size); + uint32_t hash = 0; + hash = XXH32(&item->cache_id, sizeof(item->cache_id), hash); + hash = XXH32(item->key, item->key_size, hash); return hash; } -- 2.30.2