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Revision History

This page summarizes changes and revisions to the real time correction rasterizer. Note that effective v1.01 we are updating the name to NRTCR (Nextgen Real Time Correction Rasterizer) to reflect the new rasterizer library incorporated into the library.


Version 2.07 8/28/2017

RTCRImageServerCreate and RTCRImageServerDestroy

This version contains the fix that allows the user to call RTCRImageServerCreate and RTCRImageServerDestroy multiple times in succession.
Note: While you may create multiple instances of the RTCRImageServer object, these instances are not truly independent. They are all bound by a common file database and therefore, calling SetupJob from any of these instances will invalidate the file data loaded by another.


Version 2.06 10/5/2016

Invalid Buffer Error

Fixed a bug which resulted in an invalid buffer error message if the client passes a NULL buffer to IRTCRImageServer::GetRasterizedTile per the auto-allocation feature.
Note: In this mode, it is the client's responsibility to free the buffer allocated by NRTCR (per window) using the IRTCRImageServer::DeAllocateRasterBuffer method to avoid memory leak.
Also, it is advisable to avoid using this mode if all the windows in the set have the same size & resolution (therefore same raster image size) because allocating and releasing buffer per window may hit the performance.

Invalid Buffer Error

Fixed a bug which resulted in an invalid buffer error message if the client passes a NULL buffer to Modified the behavior of IRTCRImageServer::GetRasterizedTile if the client passes a pre-allocated buffer (larger than the required size) so that NRTCR maintains the windows extents and disregards any extra space in the pre-allocated buffer.
Previously, if the client buffer was larger than the required size, NRTCR adjusted the data extents to fill the buffer completely.
Note: If the client specified buffer happens to be smaller than the required size (based on the window extents and resolution), IRTCRImageServer::GetRasterizedTile will return error and a suitable message listing the specified and expected buffer sizes.




Version 2.031 10/4/2016

Auto-allocation Error

Auto-allocation of the image buffer (per tile, if the client specifies a NULL buffer) was resulting in an error code (Invalid buffer/size). This has been fixed.




Version 2.03 12/23/2015

Fixed Log Output

The new version fixes the logging bug that produced repeating entries.

New Progress API

A new progress function updates API (the old one is obsolete and requires code change on your part). Details for the new progress API can be found in the sample code and is also being using by the RTCRClient64.exe

Documentation on NRTCR API

Documentation for the new NRTCR API is now available here: NRTCR API

Specific documentation for the progress function is here: API Progress




Version 2.01 12/3/2015

Log File Fix

This version contains a fix for the log file (repeated lines)

Rasterizer Crash Fixed

A customer reported rasterization crash was analyzed and a fix applied to the code.




Version 2.00 10/21/2015

New RTCR API

v2.00 has a re-designed API (rtcr_api.h) with the following improvements:

    no longer uses STL; therefore is compatible with newer versions of Visual Studio (tested with VC2008, VC2010, VC2012 and VC2013) as long as the appropriate redistributable packages are installed properly.

    allows the client program to load the RTCR module (RTCRImageServer.dll) on-demand at run-time using Win32 LoadLibrary function without need for build-time linking.

    The new RTCR api can be modified to include new changes without breaking backward/forward compatibility (source and binary).

NOTE: The new API associated with v2.00 is not backwards compatible (source and binary) with earlier versions.




Version 1.02 06/17/2015

Support for Grey Dithering

This version now supports grey dithering correctly. This is a fix/enhancement to the NextGen based version of RTCR. The initial release using the third generation rasterizer did not support dithering properly in the presence of corrections.

The fix was tied to the SFFCORRECTION engine; now this engine preserves layer/datatypes from input to output. There is no significant impact on throughput to support grey scale (assuming the amount of "data" is small compared to "regular" data - otherwise it presents the same load as the monochrome output).




Version 1.01 06/09/2015

New Name and Internal Architecture

The library is now referred to as NRTCR due to major changes in the internal architecture intended to speed up processing of stripes instead of optimizing for maximum speed over the entire image.




Version 1.01a 03/18/2015

Fix for LCD file.

Fixed issue with 17 Inch LCD.




Version 1.00 06/15/2013

Initial Release

The initial release of the RTRC program.







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