Closed Bug 294134 Opened 19 years ago Closed 19 years ago

fix canvas premultiplied-alpha handling

Categories

(Core :: Graphics: Canvas2D, defect)

Product:
Core
Component:
Graphics: Canvas2D
Platform:
x86
All
Type:
defect
Priority:
Not set
Severity:
normal

Tracking

()

Status:
RESOLVED FIXED

People

(Reporter: vlad, Assigned: vlad)

Details

Attachments

(1 file)

canvas alpha fix
9.38 KB, patch
pavlov
: review+
Details | Diff | Splinter Review 
Cairo image surfaces are stored with premultiplied alpha; gfxIImageFrames are
not.  Patch fixes our handling of these two, to correctly
premultiply/unpremultiply when going back and forth.
Attached patch canvas alpha fix — — Splinter Review 
Patch.	Also fixes initial surface clearing to fully transparent black as
required by the spec.
Attachment #183569 - Flags: review?(pavlov)
Comment on attachment 183569 [details] [diff] [review]
canvas alpha fix

r=pavlov
Attachment #183569 - Flags: review?(pavlov) → review+
Fixed on trunk
Status: NEW → RESOLVED
Closed: 19 years ago
Resolution: --- → FIXED
this caused further color regression in bug 293353
You need to log in before you can comment on or make changes to this bug.

Attachment

General

Creator:
Created:
Updated:
Size: