vulkan/util: Add a helper to get a version override

[mesa.git] / docs / envvars.html

diff --git a/docs/envvars.html b/docs/envvars.html
index ea42a50779bc74176545e3fd1d917464fcda823d..a08f5b9402455d909e8807bc76d4661dbf2a99dd 100644 (file)
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -135,6 +135,16 @@ home directory.
 <li>MESA_NO_MINMAX_CACHE - when set, the minmax index cache is globally disabled.
 <li>MESA_SHADER_CAPTURE_PATH - see <a href="shading.html#capture">Capturing Shaders</a></li>
 <li>MESA_SHADER_DUMP_PATH and MESA_SHADER_READ_PATH - see <a href="shading.html#replacement">Experimenting with Shader Replacements</a></li>
+<li>MESA_VK_VERSION_OVERRIDE - changes the Vulkan physical device version
+    as returned in VkPhysicalDeviceProperties::apiVersion.
+  <ul>
+    <li>The format should be MAJOR.MINOR[.PATCH]</li>
+    <li>This will not let you force a version higher than the driver's
+        instance versionas advertised by vkEnumerateInstanceVersion</li>
+    <li>This can be very useful for debugging but some features may not be
+        implemented correctly. (For developers only)</li>
+  </ul>
+</li>
 </ul>