diff options
author | Habib Gahbiche <zazizizou> | 2021-03-29 08:44:27 +0300 |
---|---|---|
committer | Jeroen Bakker <jeroen@blender.org> | 2021-03-29 08:56:58 +0300 |
commit | 805d9478109e76ca221f202ff152bae685f77ff4 (patch) | |
tree | 61b5b35de39fcdae1f31da98be39155f6d215386 /source/blender/blenlib/intern/math_base_inline.c | |
parent | 6af4163a3f190ed8b33a622ac038d9df88757a20 (diff) |
Compositor: Add Anti-Aliasing node
This is an implementation of Enhanced Subpixel Morphological Antialiasing (SMAA)
The algorithm was proposed by:
Jorge Jimenez, Jose I. Echevarria, Tiago Sousa, Diego Gutierrez
This node provides only SMAA 1x mode, so the operation will be done with no spatial
multisampling nor temporal supersampling. See Patch for comparisons.
The existing AA operation seems to be used only for binary images by some other nodes.
Using SMAA for binary images needs no important parameter such as "threshold", so we
perhaps can switch the operation to SMAA, though that changes existing behavior.
Notes:
1. The program code assumes the screen coordinates are DirectX style that the
vertical direction is upside-down, so "top" and "bottom" actually represent bottom
and top, respectively.
Thanks for Habib Gahbiche (zazizizou) to polish and finalize this patch.
Reviewed By: jbakker
Differential Revision: https://developer.blender.org/D2411
Diffstat (limited to 'source/blender/blenlib/intern/math_base_inline.c')
-rw-r--r-- | source/blender/blenlib/intern/math_base_inline.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/source/blender/blenlib/intern/math_base_inline.c b/source/blender/blenlib/intern/math_base_inline.c index 6481fac5a14..2a7c091d1b9 100644 --- a/source/blender/blenlib/intern/math_base_inline.c +++ b/source/blender/blenlib/intern/math_base_inline.c @@ -192,6 +192,13 @@ MINLINE double ratiod(double min, double max, double pos) return range == 0 ? 0 : ((pos - min) / range); } +/* Map a normalized value, i.e. from interval [0, 1] to interval [a, b] */ +MINLINE float scalenorm(float a, float b, float x) +{ + BLI_assert(x <= 1 && x >= 0); + return (x * (b - a)) + a; +} + /* used for zoom values*/ MINLINE float power_of_2(float val) { |