Hi. I have interest in contributing patches to extend qemu's powerpc graphics card emulation to include more comprehensive support for gamma. Some classic mac applications will balk at launch if the graphics card doesn't claim enough support for gamma tricks. Native parity should be possible, allowing applications to ramp the apparent screen brightness using gamma tricks.
As far as I can tell, both https://github.com/ozbenh/QemuMacDrivers and qemu itself need to be updated for this endeavor. It is unclear to me how much of the code "should" live in one repository or the other. I assume that it would be preferable to put as little code as possible into the driver that runs emulated, and move the bulk of the work to the driver side, in the qemu host. I could not find any existing work on this, nor anyone asking about the feature. I don't have experience hacking on qemu, but I have extensively patched SheepShaver before. I hope to contribute more to qemu-ppc instead. Thank you for any advice on direction or prior art.
