diff options
author | Lukas Stockner <lukas.stockner@freenet.de> | 2016-01-10 02:11:34 +0300 |
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committer | Lukas Stockner <lukas.stockner@freenet.de> | 2016-01-10 02:13:53 +0300 |
commit | 6995b4d8d96a14ea574f85658b73504fa0d8070a (patch) | |
tree | c0edd6359c7a29aaf29c32515f4aa4b9bc808798 /intern/cycles/render/tile.h | |
parent | ec20c4b558cc569e8a9d44923a2303fbc7d13523 (diff) |
Cycles: Adding Hilbert Spiral as a tile order for rendering
This patch adds the "Hilbert Spiral", a custom-designed continuous space-filling curve, as a tile order for rendering in Cycles.
It essentially works by dividing the tiles into tile blocks which are processed in a spiral outwards from the center. Inside each
block, the tiles are processed in a regular Hilbert curve pattern. By rotating that pattern according to the spiral direction,
a continuous curve is obtained, which helps with cache coherency and therefore rendering speed.
The curve is a compromise between the faster-rendering Bottom-to-Top etc. orders and the Center order, which is a bit slower,
but starts with the more important areas. The Hilbert Spiral also starts in the center (unless huge tiles are used) and is still
marginally slower than Bottom-to-Top, but noticeably faster than Center.
Reviewers: sergey, #cycles, dingto
Reviewed By: #cycles, dingto
Subscribers: iscream, gregzaal, sergey, mib2berlin
Differential Revision: https://developer.blender.org/D1166
Diffstat (limited to 'intern/cycles/render/tile.h')
-rw-r--r-- | intern/cycles/render/tile.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/intern/cycles/render/tile.h b/intern/cycles/render/tile.h index 09e1b25dda7..700e00c9e0a 100644 --- a/intern/cycles/render/tile.h +++ b/intern/cycles/render/tile.h @@ -47,7 +47,8 @@ enum TileOrder { TILE_RIGHT_TO_LEFT = 1, TILE_LEFT_TO_RIGHT = 2, TILE_TOP_TO_BOTTOM = 3, - TILE_BOTTOM_TO_TOP = 4 + TILE_BOTTOM_TO_TOP = 4, + TILE_HILBERT_SPIRAL = 5, }; /* Tile Manager */ |