diff options
| author | Thomas Hellstrom <[email protected]> | 2017-08-09 11:00:16 +0200 |
|---|---|---|
| committer | Thomas Hellstrom <[email protected]> | 2017-08-10 09:15:33 +0200 |
| commit | fe4aae0e6ad395ef48c2f710c3deb51a0b769000 (patch) | |
| tree | f3a33b2a03c878defd4fd7bb27ce8509a980e07b /src | |
| parent | 08bee3e5ac95ad51ef06ba3a4ee349f96f173df7 (diff) | |
glx: Work around X servers reporting bogus values of GLX_SWAP_METHOD_OML
Due to the recently fixed bug where dri drivers didn't report a correct
__DRI_ATTRIB_SWAP_METHOD value, and the fact that X servers just forward this
incorrect value (from the AIGLX dri driver) untranslated as
GLX_SWAP_METHOD_OML, the latter value might be undefined when old dri AIGLX
drivers are used, which breaks client fbconfig matching with server fbconfigs.
So work around this by assuming GLX_SWAP_METHOD_UNDEFINED when a bogus value
is read.
Signed-off-by: Thomas Hellstrom <[email protected]>
Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Michel Dänzer <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/glx/glxext.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/src/glx/glxext.c b/src/glx/glxext.c index 9ef7ff5f694..9cbe3347723 100644 --- a/src/glx/glxext.c +++ b/src/glx/glxext.c @@ -524,7 +524,17 @@ __glXInitializeVisualConfigFromTags(struct glx_config * config, int count, config->visualSelectGroup = *bp++; break; case GLX_SWAP_METHOD_OML: - config->swapMethod = *bp++; + if (*bp == GLX_SWAP_UNDEFINED_OML || + *bp == GLX_SWAP_COPY_OML || + *bp == GLX_SWAP_EXCHANGE_OML) { + config->swapMethod = *bp++; + } else { + /* X servers with old HW drivers may return any value here, so + * assume GLX_SWAP_METHOD_UNDEFINED. + */ + config->swapMethod = GLX_SWAP_UNDEFINED_OML; + bp++; + } break; #endif case GLX_SAMPLE_BUFFERS_SGIS: |