# Cemu detailed changelog for 1.21.0
# Patreon release date: 2020-08-21
# Public release date: 2020-08-28
general: The title manager now has an option to export and compare file hashes
There is also an option to compare with an online database maintained by us and the community.
This database is currently still empty, to contribute hashes for your games visit https://checksums.cemu.info
general: Graphic packs can now extend the amount of emulated RAM that is available for games
The maximum amount of RAM that can be added is limited to about 2GiB due to constraints given by the architecture
For demonstration purposes we created an example graphic pack for Breath of the Wild
After updating your graphic packs you can find it under BotW -> Mods -> Extended Memory
Note for gfx pack developers:
Most games don't detect and utilize extra memory on their own and need additional code patches to adjust (often hardcoded) heap sizes
Graphic pack version was also bumped to 6. This version remains fully backwards compatible and only adds the new RAM extension feature.
CPU/JIT: Fixed a very rare bug where Cemu would apply an incorrect optimization to ADDIC+SUBFE
This fixes several issues in the SM64 port
Vulkan: Correctly emulate rasterizer disable flag
Fixes an issue in XCX where there would be a brightly colored pixel in the center of the screen
OpenGL/Vulkan: Added support for negative viewport height