JDK-8220231 : Cache HarfBuzz face object for same font's text layout calls
- Type: Enhancement
- Component: client-libs
- Sub-Component: 2d
- Affected Version: 11,12,13
- Priority: P4
- Status: Resolved
- Resolution: Fixed
- Submitted: 2019-03-06
- Updated: 2025-08-11
- Resolved: 2019-04-11
The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 11 | JDK 13 |
|---|---|
11.0.6-oracleFixed  |
13 b18Fixed |
Related Reports
|
Duplicate :
|
|
|
Duplicate :
|
|
|
Relates :
|
|
|
Relates :
|
Description
Currently each text layout operation includes the creation of Harfbuzz face object (hb_face_t). By creating it only once per Font2D instance, a notable (couple of times) speedup of repeated layout operations for the same font can be achieved. Harfbuzz face object is claimed to be 'threadsafe beyond construction' (https://lists.freedesktop.org/archives/harfbuzz/2009-August/000359.html), so there shouldn't be a problem with concurrent layout operations.
Comments
|