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glx: Work around a GLX_OML swap method in older dri drivers 

The swapMethod config member would typically contain an arbitrary value
on older dri drivers. Fix this so that if we detect an illegal value,
return GLX_SWAP_UNDEFINED_OML.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Adam Jackson <ajax@redhat.com>
This commit is contained in:
Thomas Hellstrom 2017-09-06 16:27:53 +02:00 committed by Adam Jackson
parent da29a15874
commit 0fc26310d5
1 changed files with 7 additions and 0 deletions
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7
glx/glxdricommon.c
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@ -158,6 +158,13 @@ createModeFromConfig(const __DRIcoreExtension * core,
config->config.bindToTextureTargets |= config->config.bindToTextureTargets |=
GLX_TEXTURE_RECTANGLE_BIT_EXT; GLX_TEXTURE_RECTANGLE_BIT_EXT;
break; break;
case __DRI_ATTRIB_SWAP_METHOD:
/* Workaround for broken dri drivers */
if (value != GLX_SWAP_UNDEFINED_OML &&
value != GLX_SWAP_COPY_OML &&
value != GLX_SWAP_EXCHANGE_OML)
value = GLX_SWAP_UNDEFINED_OML;
/* Fall through. */
default: default:
setScalar(&config->config, attrib, value); setScalar(&config->config, attrib, value);
break; break;