On 07/25/2014 02:13 PM, Damian Hobson-Garcia wrote: > Hi Carsten, > > On 2014-07-25 1:07 PM, Carsten Haitzler wrote: > >>>> Mesa could also be used during build time instead of the >>>> opegl-es-virtual-drv. >>> Yes and no, I think. There is the minor problem that the Mesa >>> drivers provide a versioned libGLESv2.so.2, which all of the >>> built packages will link to. This means that if I want to >>> install a driver (such as Mali or SGX) after the fact, I have to >>> provide libGLESv2.so.2 to overwrite the Mesa driver. If Mesa >>> changes its version number for some reason, now the Mali and SGX >>> drivers must update their names as well. opegl-es-virtual-drv is >>> nice because it is not versioned, so as long as there is a >>> libGLESv2.so (or a link of that name) in the non floss drivers, >>> everything works. >> or just provide a symlink. far simpler a solution. drivers just >> ghave to agree all to provide at least the same symlink to the real >> driver version >> > I don't think it matters whether it's a symlink or not. Either way, > it requires all of the drivers to keep track of whatever version > number that Mesa is using for its libGLESv2 and update the symlink > accordingly.
for ABI compatibility, mesa can't just go changing major so version anyway as a binary links agains the major s at the time i'ts build. if they change major so version they are saying they broke ABI. so onse everyone is building against libGLxx.so.2 then it has to stay - unless they break ABI which they neever should. so it can be ASSUMED to always be that version - tizen as a platform has to force/define that and guarantee it across all tizen variations and versions. if we have to patch mesa (or just add special symlinks in pkgs) or do the same for other vendor gl drivers, thatis the price you pay to keep compatibility. that is what we have to do. -- The above message is intended solely for the named addressee and may contain trade secret, industrial technology or privileged and confidential information otherwise protected under applicable law including the Unfair Competition Prevention and Trade Secret Protection Act. Any unauthorized dissemination, distribution, copying or use of the information contained in this communication is strictly prohibited. If you have received this communication in error, please notify the sender by email and delete this communication immediately.
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