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zink: use XOR for descriptor hash accumulation

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these values are already hashed, so there's no need to use as much cpu
to fully re-hash them again

Reviewed-by: Dave Airlie <airlied@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/16645>
This commit is contained in:
Mike Blumenkrantz 2022-05-17 11:08:37 -04:00 • committed by Marge Bot
parent 8636717270
commit 5185c2d88e
1 changed files with 4 additions and 6 deletions
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10
src/gallium/drivers/zink/zink_descriptors.c
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@ -187,7 +187,7 @@ desc_state_hash(const void *key)
for (unsigned i = 0; i < ZINK_SHADER_COUNT; i++) {
if (d_key->exists[i]) {
if (!first)
hash = XXH32(&d_key->state[i], sizeof(uint32_t), hash);
hash ^= d_key->state[i];
else
hash = d_key->state[i];
first = false;
@ -1738,9 +1738,7 @@ update_descriptor_state(struct zink_context *ctx, enum zink_descriptor_type type
ctx->dd->descriptor_states[is_compute].state[type] = ctx->dd->gfx_descriptor_states[i].state[type];
first = false;
} else {
ctx->dd->descriptor_states[is_compute].state[type] = XXH32(&ctx->dd->gfx_descriptor_states[i].state[type],
sizeof(uint32_t),
ctx->dd->descriptor_states[is_compute].state[type]);
ctx->dd->descriptor_states[is_compute].state[type] ^= ctx->dd->gfx_descriptor_states[i].state[type];
}
}
has_any_usage |= has_usage;
@ -1768,7 +1766,7 @@ zink_context_update_descriptor_states(struct zink_context *ctx, struct zink_prog
if (first)
hash = ctx->dd->gfx_push_state[stage];
else
hash = XXH32(&ctx->dd->gfx_push_state[stage], sizeof(uint32_t), hash);
hash ^= ctx->dd->gfx_push_state[stage];
first = false;
}
}
@ -1807,7 +1805,7 @@ zink_context_update_descriptor_states(struct zink_context *ctx, struct zink_prog
if (first)
hash = ctx->dd->compact_gfx_descriptor_states[i].state[n];
else
hash = XXH32(&ctx->dd->compact_gfx_descriptor_states[i].state[n], sizeof(uint32_t), hash);
hash ^= ctx->dd->compact_gfx_descriptor_states[i].state[n];
first = false;
} else {
ctx->dd->compact_gfx_descriptor_states[i].state[n] = 0;