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Bug 288

Summary:	[TV52015900] TTriSurfaceSeries with TeeOpenGL. If I activate transparency into thi...
Product:	VCL TeeChart	Reporter:	yeray alonso <yeray>
Component:	Canvas	Assignee:	Steema Issue Manager <issuemanager>
Status:	RESOLVED FIXED
Severity:	major	CC:	david
Priority:	Normal
Version:	unspecified
Target Milestone:	---
Hardware:	All
OS:	All
Chart Series:	---	Delphi / C++ Builder RAD IDE Version:

Description yeray alonso 2013-11-20 10:36:31 EST

TTriSurfaceSeries with TeeOpenGL. If I activate transparency into this serie, only the last drawn triangle is transparent.
http://www.teechart.net/support/viewtopic.php?f=3&t=12815 [created:2011-11-18T17:39:38.000+01:00 reported by:yeray@steema.com reported in version:2011.04.41118 (TeeChart VCL)]

Comment 1 david berneda 2013-12-19 10:06:11 EST

Fixed. 
Transparency was being activated but never deactivated (OpenGL Canvas only).

The reason is TriSurface (and Surface) series activate transparency (canvas BeginBlending)only once, at the beggining of the painting methods (DrawAllValues), instead of creating/freeing a blending object for each "cell" in the series.