[Webkit-unassigned] [Bug 67499] [chromium] Support CCHeadsUpDisplay in threaded compositing mode

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=67499





--- Comment #3 from Shawn Singh <shawnsingh at chromium.org>  2012-03-10 19:31:37 PST ---
Task: implement a minimal, clean font atlas, initialized on main thread, used on impl thread.  

This seems pretty straightforward, can you please let me know if there's something i'm stupidly overlooking?

class CCHeadsUpDisplayFont {
    void initializeFontAtlas(... ) { 
        ASSERT( on main thread );
        setup a ManagedTexture
        paint monospace text on it using PlatformCanvas::Painter and WebCore::Font
    }

    void drawString(position, string, layerRenderer) {
        set up the shader program
        drawStringInternal(...);
    }

    void drawLines(position, height, vector<string>, layerRenderer) {
        set up the shader program
        for each line
            drawStringInternal(...);
    }

private:
    void drawStringInternal(position, string, layerRenderer) {
        for each char, give the tex coords and call drawTexturedQuad(...);
    }

}

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