comp.lang.idl-pvwave archive: archive » Using IDLgrShaderBytscl on Windows to display floating-point image data quickly.

Home » Public Forums » archive » Using IDLgrShaderBytscl on Windows to display floating-point image data quickly.

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Using IDLgrShaderBytscl on Windows to display floating-point image data quickly. [message #92407]

Thu, 10 December 2015 09:26

kagoldberg
Messages: 26
Registered: November 2012

Junior Member

I'm having anomalous hard crashes on Windows7 that I've isolated to my using of IDLgrShaderBytscl as the SHADER object in an IDLgrImage. Everything works perfectly on the Mac side. I wonder if anyone has gone through a debugging process with this, like I am now.

In a nutshell, I want to keep image (IDLgrImage) raw data in floating-point format. I set the IDLgrShaderBytscl's OUT_RANGE to [0b,255b] for display, and I adjust the IN_RANGE to fit my raw data. I set the IDLgrShaderBytscl's UNIT_IN_RANGE to 4 for floating-point, and set the IDLgrImage INTERNAL_DATA_TYPE to 3, which is Float32.

When I Draw on the Mac, everything is great and so much faster than bytscl()! On Windows, I can see that it can work without crashing in some circumstances when RENDERER=0 (Hardware) in the widget_draw's IDLgrWindow. But, I think, in cases where it defaults to software rendering, RENDERER=1, it goes poof when drawing the image in this manner.

Any ideas out there for this? Thanks

Report message to a moderator

[Message index]

Using IDLgrShaderBytscl on Windows to display floating-point image data quickly.

By: kagoldberg on Thu, 10 December 2015 09:26

Previous Topic:	Optimizing loops
Next Topic:	IDLgrImage used with NO_COPY

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Wed Oct 08 13:56:36 PDT 2025

Total time taken to generate the page: 0.01040 seconds