IDL 8.8.1 Release Notes
See the following sections:
For system requirements, see Platform Support for ENVI 5.6.1 and IDL 8.8.1.
.PRO Files Ported to Native C/C++ Code
For improved performance, the following classes were ported from PRO code in the lib/datatypes folder to C/C++ code in idl.dll:
Additionally, the new procedure SAVEFILE_CLEANUP was added. This procedure inspects the given routine save files and removes any routines that could cause problems in modern IDL. See the SAVEFILE_CLEANUP topic in IDL Help for details and usage.
Macintosh M1 Support
Support for Macintosh M1 platforms has been added.
The MKL_FFT routine (Math Kernel Library Fast Fourier Transform) was added to upgrade FFT performance. MKL_FFT returns a result equal to the complex, discrete Fourier transform of Array.
QUERY_PNG has been updated to return more metadata from a PNG file, including custom fields.
H5_PARSE has been updated to read in UTM8 encoded string data.
JSON_PARSE has been updated to improve parsing speed. In comparison tests between IDL 8.7.3 and 8.8.1, speed was 3 - 9 times faster, depending on the size of the JSON files being parsed.
Updated Windows File Selector
The Windows file selector user interface for the DIALOG_PICKFILE() function has been updated. For details, see DIALOG_PICKFILE.
OpenGL Hardware Rendering Support
OpenGL hardware rendering is not fully supported on Linux VMs with the VMWare SVGA device driver. For full OpenGL hardware support on a VM, switch to using an nVidia driver.
To identify which driver is being used, run this compound command:
w = IDLgrWindow(Renderer=0) & w.GetDeviceInfo, All=all & print, all, /Implied
If the driver is VMWare SVGA, you will see properties such as this:
"NAME" : "SVGA3D; build: RELEASE; LLVM;"
"VENDOR" : "VMWare, Inc."
"VERSION" : "3.0 Mesa 17.2.3"
As of IDL 8.8, IDL uses Java 11. If you had Java 8 code in your previous version of IDL, you may need to recompile using Java 11.
|H5D_READ performance was slow.
||Allow user to get custom header information in IDL using QUERY_PNG.
||H5_PARSE failed to read in UTF8 encoded string data.
||Update the Windows-level file selection dialogs called by DIALOG_PICKFILE.
||The limitations of IDL Virtual Machine mode when working with IDL_IDLbridge were missing from Help documentation.
||Syntax coloring was not fully working when the workspace was switched in IDL 8.8.
||IDL 8.8 Workspace became corrupted if "Customize" was selected in Eclipse.
||Text edits in the text editors for IDL on Mac Big Sur were delayed.
||Text rendering issues were occuring in the MacOS Editor.
The 3rd party libraries listed below have been updated to new these versions:
- AdoptOpenJDK JDK and JRE, 11.0.11
- Chromium Embedded Framework, 91.1.22
- cURL, 7.77.0
- Eclipse CVS Client, 1.4.1700.v20210303-1800
- Eclipse Git, 22.214.171.124106070339-r
- Eclipse Platform, 4.20.0.v20210612-2011
- FreeType, 2.10.4
- GDAL, 3.2.2
- GEOS, 3.8.1
- JasPer, 2.0.32
- libHaru, 2.3.0
- libjpeg-turbo, 2.1.0
- libpng, 1.6.37
- libxml2, 2.9.11
- OpenSSL, 1.1.1k
- python, 3.7.10, 3.8.10, 3.9.5
- Spatialite, 5.0.0
The following 3rd party libraries have been added in this release:
Workbench Instability with M1 Mac
Workbench instability issues occur due to Java AdoptOpenJDK running with Rosetta on M1 Mac. To work around this issue, replace the java in INSTALL_DIR/bin/bin.darwin.x86_64/jre with Azul Zulu OpenJDK JRE 11.0.12+7 (Zulu:11.50.19 version) found here: https://cdn.azul.com/zulu/bin/zulu11.50.19-ca-jdk11.0.12-macosx_x64.dmg.
Help Display on MacOS
Using the IDL Help System on MacOS with the Safari web browser results in the error "The operation couldn't be completed," or it displays a blank page. By default, Safari prohibits some local file operations; the error occurs when a temporary HTML file auto-created by the Help system attempts to perform a redirect to the specific IDL Help content. There are two workarounds to display the Help:
- In Safari, enable the Disable Local File Restrictions setting.
- If you prefer not to disable local file restrictions in Safari, use Chrome or Firefox as your browser to open IDL Help content.