[Bf-blender-cvs] [7bb910c] master: Fix T42344: EWA filter produces blured results

Sergey Sharybin noreply at git.blender.org
Fri Oct 31 12:41:24 CET 2014


Commit: 7bb910cd4e97cfb39fd5b874d9d634b13e4cee51
Author: Sergey Sharybin
Date:   Fri Oct 31 12:35:20 2014 +0100
Branches: master
https://developer.blender.org/rB7bb910cd4e97cfb39fd5b874d9d634b13e4cee51

Fix T42344: EWA filter produces blured results

Derivatives variable names are swapped in the old EWA filter code,
need to adjust for that.

TODO: Make naming fore clear in there.

===================================================================

M	source/blender/blenlib/intern/math_interp.c

===================================================================

diff --git a/source/blender/blenlib/intern/math_interp.c b/source/blender/blenlib/intern/math_interp.c
index 4feb954..a0c47be 100644
--- a/source/blender/blenlib/intern/math_interp.c
+++ b/source/blender/blenlib/intern/math_interp.c
@@ -467,7 +467,7 @@ void BLI_ewa_filter(const int width, const int height,
 	/* scaling dxt/dyt by full resolution can cause overflow because of huge A/B/C and esp. F values,
 	 * scaling by aspect ratio alone does the opposite, so try something in between instead... */
 	const float ff2 = (float)width, ff = sqrtf(ff2), q = (float)height / ff;
-	const float Ux = du[0] * ff, Vx = dv[0] * q, Uy = du[1] * ff, Vy = dv[1] * q;
+	const float Ux = du[0] * ff, Vx = du[1] * q, Uy = dv[0] * ff, Vy = dv[1] * q;
 	float A = Vx * Vx + Vy * Vy;
 	float B = -2.0f * (Ux * Vx + Uy * Vy);
 	float C = Ux * Ux + Uy * Uy;




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