[Webkit-unassigned] [Bug 98308] New: Optimize texture-complete checks

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=98308

           Summary: Optimize texture-complete checks
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: gman at google.com
                CC: kbr at google.com, zmo at google.com


Right now on every WebGL draw call, WebKit goes through a loop checking that all textures are renderable in WebGLRenderingContext::handleNPOTTextures

That's not a small or simple loop. For example on one of my machines, m_texureUnits is 160

The suggested optimization is to track the number of unrenderable textures. If that number is 0 the loop and be skipped.

Tracking requires updating the count anytime a texture is created, deleted, or it's state is modified.

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