[Bf-blender-cvs] [6fb8743] master: OpenCOlorIO: Add explicit linearSRGB -> sRGB lookup table
Sergey Sharybin
noreply at git.blender.org
Thu Sep 15 15:57:29 CEST 2016
Commit: 6fb874369c31649de7232235b0114344bfdb8e92
Author: Sergey Sharybin
Date: Thu Sep 15 15:08:20 2016 +0200
Branches: master
https://developer.blender.org/rB6fb874369c31649de7232235b0114344bfdb8e92
OpenCOlorIO: Add explicit linearSRGB -> sRGB lookup table
Previously converting from linear space to SRGB was doing rather
slow inverted 1D lookup. Adding explicit inverse LUT gives 20%
speedup of OpenGL render.
Next question is: why do we even bother with sRGB conversion here,
OpenGL is already in the proper space so in theory we can avoid
quite some color space conversions. In any case, having this case
optimized in nice anyway.
===================================================================
M release/datafiles/colormanagement/config.ocio
A release/datafiles/colormanagement/luts/srgb_inv.spi1d
===================================================================
diff --git a/release/datafiles/colormanagement/config.ocio b/release/datafiles/colormanagement/config.ocio
index c2bfd3b..924a140 100644
--- a/release/datafiles/colormanagement/config.ocio
+++ b/release/datafiles/colormanagement/config.ocio
@@ -247,6 +247,7 @@ colorspaces:
allocation: uniform
allocationvars: [-0.125, 4.875]
to_reference: !<FileTransform> {src: srgb.spi1d, interpolation: linear}
+ from_reference: !<FileTransform> {src: srgb_inv.spi1d, interpolation: linear}
- !<ColorSpace>
name: VD16
diff --git a/release/datafiles/colormanagement/luts/srgb_inv.spi1d b/release/datafiles/colormanagement/luts/srgb_inv.spi1d
new file mode 100644
index 0000000..2c1452f
--- /dev/null
+++ b/release/datafiles/colormanagement/luts/srgb_inv.spi1d
@@ -0,0 +1,65567 @@
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@@ Diff output truncated at 10240 characters. @@
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