T39307: The fast gaussian blur is not an accurate formula. When deciding

which tiles are selected for input there was always a constant for correcting
the accuracy.

It seems that the constant was not enough and has been adjusted. (2 => 3).

1 files changed, 3 insertions, 2 deletions

diff --git a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.cpp b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.cpp
index a6be9254f6f..ff53ef22e29 100644
--- a/source/blender/compositor/operations/COM_FastGaussianBlurOperation.cpp
+++ b/source/blender/compositor/operations/COM_FastGaussianBlurOperation.cpp
@@ -47,10 +47,11 @@ bool FastGaussianBlurOperation::getDAI(rcti *rect, rcti *output)
 {
 	// m_data->sizex * m_size should be enough? For some reason there
 	// seem to be errors in the boundary between tiles.
-	int sx = this->m_data->sizex * this->m_size * 2;
+	float size = this->m_size * COM_FAST_GAUSSIAN_MULTIPLIER;
+	int sx = this->m_data->sizex * size;
 	if (sx < 1)
 		sx = 1;
-	int sy = this->m_data->sizey * this->m_size * 2;
+	int sy = this->m_data->sizey * size;
 	if (sy < 1)
 		sy = 1;