Shared (the default) and packed layouts are decided by the implementation. Currently we just pack them using the std140 layout. This change makes it so we use the slightly more compact std430 layout on i965 and radeonsi.
I doubt this will help many games, but it still seems worth implementing. I could only find shaders for a single game in my shader-db collection where STD140 layout wasn't explicitly defined for UBOs, and even there it was using vec4s so there would be no improvement. The number of changes in patch 4 is a little unfortunate however I decided this was better than changing the type completely behind the scenes. Given the complexity of the ifc linking/validation code I figured it would be better to avoid adding to that confusion. If all the remaining gallium drivers add support for the LOAD opcode and the issues with SNB are resolved we could revert most of that change anyway. Please review. _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/mesa-dev