Mesa (main): docs: fix header-levels in envvars.rst

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Module: Mesa
Branch: main
Commit: c13f8bc5ac680ab0fd8c9472d1df7de2d6267191
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c13f8bc5ac680ab0fd8c9472d1df7de2d6267191

Author: Erik Faye-Lund <erik.faye-lund at collabora.com>
Date:   Tue Jun  1 11:44:50 2021 +0200

docs: fix header-levels in envvars.rst

It seems something went wrong during conversion of this article (or
maybe even before in the HTML version), where every header after the
"Gallium environment variables" header was nested below it.

That's clearly not what's meant here, so let's fix that.

This makes the toctree make a bit more sense for this article.

Reviewed-by: Chia-I Wu <olvaffe at gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11106>

---

 docs/envvars.rst | 20 ++++++++++----------
 1 file changed, 10 insertions(+), 10 deletions(-)

diff --git a/docs/envvars.rst b/docs/envvars.rst
index 08fb0835198..58a5ed0978e 100644
--- a/docs/envvars.rst
+++ b/docs/envvars.rst
@@ -422,7 +422,7 @@ Gallium environment variables
    ``src/mesa/state_tracker/st_debug.c`` for other options.
 
 Clover environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
 
 ``CLOVER_EXTRA_BUILD_OPTIONS``
    allows specifying additional compiler and linker options. Specified
@@ -438,7 +438,7 @@ Clover environment variables
    ``clLinkProgram``.
 
 Softpipe driver environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------------
 
 ``SOFTPIPE_DEBUG``
    a comma-separated list of named flags, which do various things:
@@ -461,7 +461,7 @@ Softpipe driver environment variables
       of NIR.
 
 LLVMpipe driver environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------------
 
 ``LP_NO_RAST``
    if set LLVMpipe will no-op rasterization
@@ -477,7 +477,7 @@ LLVMpipe driver environment variables
    CPU cores present.
 
 VMware SVGA driver environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------------------
 
 ``SVGA_FORCE_SWTNL``
    force use of software vertex transformation
@@ -497,7 +497,7 @@ VMware SVGA driver environment variables
 See the driver code for other, lesser-used variables.
 
 WGL environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------
 
 ``WGL_SWAP_INTERVAL``
    to set a swap interval, equivalent to calling
@@ -506,13 +506,13 @@ WGL environment variables
    have no effect.
 
 VA-API environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+----------------------------
 
 ``VAAPI_MPEG4_ENABLED``
    enable MPEG4 for VA-API, disabled by default.
 
 VC4 driver environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+--------------------------------
 
 ``VC4_DEBUG``
    a comma-separated list of named flags, which do various things:
@@ -541,7 +541,7 @@ VC4 driver environment variables
       write a GPU command stream trace file (VC4 simulator only)
 
 RADV driver environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---------------------------------
 
 ``RADV_DEBUG``
    a comma-separated list of named flags, which do various things:
@@ -670,7 +670,7 @@ RADV driver environment variables
       print liveness and register demand information before scheduling
 
 radeonsi driver environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+-------------------------------------
 
 ``AMD_DEBUG``
    a comma-separated list of named flags, which do various things:
@@ -773,7 +773,7 @@ radeonsi driver environment variables
       Enable DFSM.
 
 r600 driver environment variables
-~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+---------------------------------
 
 ``R600_DEBUG``
    a comma-separated list of named flags, which do various things: