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Gallium3D R600 Shader Variant Caching

Mesa

Published on 10 June 2012 06:53 AM EDT
Written by Michael Larabel in Mesa
42 Comments

The latest R600g driver improvement this weekend is for shader variant caching rather than rebuilding the shaders each time.

On Saturday published to the mailing list was the "r600g: cache shader variants instead of rebuilding" patch. This modestly-sized patch was authored by Vadim Girlin.

This patch is said to improve performance for some applications like FlightGear. From a bug report, with FlightGear on R600g the frame-rate went from around 20 FPS with the normal rendering back-end to now around 40 FPS with the patched copy. With the R600g LLVM back-end, originally it was around three FPS but is now also up around 40 FPS.

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