aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorMattias Andrée <maandree@kth.se>2020-05-01 21:52:52 +0200
committerMattias Andrée <maandree@kth.se>2020-05-01 21:52:52 +0200
commit5cca7f15b42dc4df01c9199e9e64770e599d36ef (patch)
tree8a0cd9f6b40e92cc883793fa0f055bcc92f3b7e4
parentAdd flag for ignoring variant selectors that the font does not support (diff)
downloadlibskrift-5cca7f15b42dc4df01c9199e9e64770e599d36ef.tar.gz
libskrift-5cca7f15b42dc4df01c9199e9e64770e599d36ef.tar.bz2
libskrift-5cca7f15b42dc4df01c9199e9e64770e599d36ef.tar.xz
m fix
Signed-off-by: Mattias Andrée <maandree@kth.se>
-rw-r--r--algorithms/dual-alpha_blending4
1 files changed, 2 insertions, 2 deletions
diff --git a/algorithms/dual-alpha_blending b/algorithms/dual-alpha_blending
index ef16f3e..8312abc 100644
--- a/algorithms/dual-alpha_blending
+++ b/algorithms/dual-alpha_blending
@@ -30,9 +30,9 @@ the background object): opacity (we will call this
variable O). The new alpha blending algorithm
(“dual-alpha blending”) is:
- C_out⋅A_out = C_bg⋅A_bg⋅O⋅(1 − A_fg⋅O) + C_fg⋅A_fg⋅O
+ C_out⋅A_out = C_bg⋅A_bg⋅(1 − O) + C_fg⋅A_fg⋅O
- A_out = A_bg⋅O⋅(1 − A_fg⋅O) + A_fg⋅O
+ A_out = A_bg⋅(1 − O) + A_fg⋅O
This algorithm works as the normal alpha blending
algorithm if the opacity is used instead of alpha,