mirror of
https://github.com/photonstorm/phaser
synced 2024-12-25 12:33:38 +00:00
50 lines
No EOL
1.2 KiB
JavaScript
50 lines
No EOL
1.2 KiB
JavaScript
module.exports = {
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getTintFromFloats: function (r, g, b, a)
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{
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var ur = ((r * 255.0)|0) & 0xFF;
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var ug = ((g * 255.0)|0) & 0xFF;
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var ub = ((b * 255.0)|0) & 0xFF;
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var ua = ((a * 255.0)|0) & 0xFF;
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return ((ua << 24) | (ur << 16) | (ug << 8) | ub) >>> 0;
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},
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getTintAppendFloatAlpha: function (rgb, a)
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{
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var ua = ((a * 255.0)|0) & 0xFF;
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return ((ua << 24) | rgb) >>> 0;
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},
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getTintAppendFloatAlphaAndSwap: function (rgb, a)
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{
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var ur = ((rgb >> 16)|0) & 0xff;
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var ug = ((rgb >> 8)|0) & 0xff;
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var ub = (rgb|0) & 0xff;
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var ua = ((a * 255.0)|0) & 0xFF;
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return ((ua << 24) | (ub << 16) | (ug << 8) | ur) >>> 0;
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},
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getComponentCount: function (attributes)
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{
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var count = 0;
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for (var index = 0; index < attributes.length; ++index)
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{
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var element = attributes[index];
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if (element.type === WebGLRenderingContext.FLOAT)
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{
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count += element.size;
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}
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else
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{
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count += 1; // We'll force any other type to be 32 bit. for now
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}
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}
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return count;
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}
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}; |