From 2e4179b4a746ed0c8bf05d7e949edfd978b6d1ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jos=C3=A9=20Roberto=20de=20Souza?= <jose.souza@intel.com>
Date: Fri, 9 Aug 2024 07:38:18 -0700
Subject: [PATCH] docs/anv: Document ANV_SPARSE and ANV_SPARSE_USE_TRTT
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Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: José Roberto de Souza <jose.souza@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/30593>
---
 docs/envvars.rst | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/docs/envvars.rst b/docs/envvars.rst
index 7606e0717a8..4aca010eb9a 100644
--- a/docs/envvars.rst
+++ b/docs/envvars.rst
@@ -896,6 +896,19 @@ Anvil(ANV) driver environment variables
    If set to 1, true, or yes, then VK_EXT_graphics_pipeline_library
    will be disabled.
 
+.. envvar:: ANV_SPARSE
+
+   By default, the sparse resources feature is enabled. However, if set to 0,
+   false, or no, it will be disabled.
+   Platforms older than Tiger Lake do not support this feature.
+
+.. envvar:: ANV_SPARSE_USE_TRTT
+
+   On platforms supported by Xe KMD (Lunar Lake and newer) this parameter
+   changes the implementation of sparse resources feature.
+   For i915 there is no option, sparse resources is always implemented with
+   TRTT.
+
 DRI environment variables
 -------------------------