[Webkit-unassigned] [Bug 103885] New: WebGL: use pointer to the source data for Image directly in texImage2D and texSubImage2D to avoid memory copy if no conversion is needed
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Mon Dec 3 05:45:55 PST 2012
https://bugs.webkit.org/show_bug.cgi?id=103885
Summary: WebGL: use pointer to the source data for Image
directly in texImage2D and texSubImage2D to avoid
memory copy if no conversion is needed
Product: WebKit
Version: 528+ (Nightly build)
Platform: PC
OS/Version: All
Status: UNCONFIRMED
Severity: Normal
Priority: P2
Component: WebGL
AssignedTo: webkit-unassigned at lists.webkit.org
ReportedBy: jun.a.jiang at intel.com
In current implementation of texImage2D() and texSubImage2D() in WebGL, there is a redundant memory copy from Image data to the intermediate vector when no conversion is needed. If the Image resource can be locked properly, it is better to use the pointer to the image source directly and hence avoid the memory copy to the intermediate vector.
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