[Mesa-dev] [PATCH v2] docs: update MESA_DEBUG envvar documentation.

[Alejandro Piñeiro]

silent, flush, incomplete_tex and incomplete_fbo flags were not
documented (see src/mesa/main.debug.c for more info).

FP is not checked anymore.

v2 (Brian Paul):
 * MESA_DEBUG accepts a comma-separated list of parameters.
 * Clarify how MESA_DEBUG behaves with mesa debug and release builds.
 * Updated wording.
---

Tried to answer all the comments from previous review on the
documentation itself.

Initially I had the following paragraph as an extra explanation:

"MESA_DEBUG=1 on release builds is equivalent to the default behaviour
of debug builds. MESA_DEBUG=silent on debug builds is equivalent to
the default behaviour of release builds."

But I think that is not needed, as should be understood from the
documentation.

 docs/envvars.html | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

diff --git a/docs/envvars.html b/docs/envvars.html
index ed957bd..7d19fb3 100644
--- a/docs/envvars.html
+++ b/docs/envvars.html
@@ -50,8 +50,19 @@ sometimes be useful for debugging end-user issues.
    if the application generates a GL_INVALID_ENUM error, a corresponding error
    message indicating where the error occurred, and possibly why, will be
    printed to stderr.<br>
-   If the value of MESA_DEBUG is 'FP' floating point arithmetic errors will
-   generate exceptions.
+
+   MESA_DEBUG=1 is not needed for mesa debug builds, as it is the
+   behaviour by default. It would be needed for mesa release builds,
+   that silent debug messages.<br>
+
+   MESA_DEBUG accepts the following comma-separated list of named
+   flags, which adds extra behaviour to just set MESA_DEBUG=1:
+   <ul>
+     <li>silent - turn off debug messages. Only useful for debug builds.</li>
+     <li>flush - flush after each drawing command</li>
+     <li>incomplete_tex - extra debug messages when a texture is incomplete</li>
+     <li>incomplete_fbo - extra debug messages when a fbo is incomplete</li>
+   </ul>
 <li>MESA_LOG_FILE - specifies a file name for logging all errors, warnings,
 etc., rather than stderr
 <li>MESA_TEX_PROG - if set, implement conventional texture env modes with
-- 
2.7.4