Abstract things

[ncannasse]

In order to support WebGL/GLES, we need to add a few abstractions:

• h2d.BitmapData which replaces flash.display.BitmapData, mostly manipulate Bytes (check how to load such bytes in JS)
• h3d.Floats which replaces flash.Vector as a way to have an auto-resized Float specialized buffer which we can append data to
• h3d.Indexes, the same as h3d.Floats but for (16 bits?) indexes

[ncannasse]

Note: doing some benchs, it seems that filling an Array and then converting it to Float32Array is ~15% faster than resizing a Float32Array. See example below

        for( i in 0...5 ) {

            var t0 = haxe.Timer.stamp();
            var a = [];
            for( i in 0...10000000 )
                a.push(i * 1.5);
            var at = new js.html.Float32Array(a);
            trace(haxe.Timer.stamp() - t0);

            var t0 = haxe.Timer.stamp();
            var a = new js.html.Float32Array(16);
            for( i in 0...10000000 ) {
                if( a.length == i ) {
                    var n = new js.html.Float32Array((a.length * 4) >> 1);
                    n.set(a);
                    a = n;
                }
                a[i] = i * 1.5;
            }
            trace(haxe.Timer.stamp() - t0);
        }

[ncannasse]

Using Array.push is also faster than using a[i] = v;

[ncannasse]

Done in [webgl] branch

[delahee]

yummy yummy :)

2013/7/22 Nicolas Cannasse notifications@github.com

Done in [webgl] branch

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David Elahee