colortest.html

<script src="lib/jquery-1.11.1.min.js"></script>
<script>var Lighting = {}</script>
<script src="lut/intensityColorTable.js"></script>
<script>
// Generates an intensityColorTable from a palette (given by a set of color look-up tables -- index<->rgb)
// Also verifies it against a dumped intensityColorTable for errors

// TODO: Parse and load color.pal in TypeScript and generate this at load time instead of relying on LUTs

var color_rgb = null
var colorTable = null
var intensityColorTable = new Uint8Array(65536)
var mappedColor = new Array(256)
//mappedColor.fill(0)
for(var i = 0; i < 256; i++)
	mappedColor[i] = 0

function Color2RGB(idx) {
	var color = color_rgb[idx]
	//return (color[0] << 16) | (color[1] << 8) | color[2]
	// Normally this would be >> 1 (i.e., / 2), but our RGB values are already the palette color * 4, so (/ 8)
	return (color[2] >> 3) | 32 * ((color[1] >> 3) | 32 * (color[0] >> 3))
}

function Index2Color(x) { return x }

function setIntensityTableColor(tableIdx) {
	for(var tableIdx2 = 0; tableIdx2 < 128; tableIdx2++) {
	    var v5 = (Color2RGB(tableIdx) & 0x7C00) >> 10
	    var v6 = (Color2RGB(tableIdx) & 0x3E0) >> 5
	    var v7 = Color2RGB(tableIdx) & 0x1F

	    intensityColorTable[256 * tableIdx + tableIdx2] = Index2Color(colorTable[(((tableIdx2 << 9) * v7) >> 16) | ((tableIdx2 << 9) * v5 >> 16 << 10) | 32 * ((tableIdx2 << 9) * v6 >> 16)]);

	    intensityColorTable[256 * tableIdx + 128 + tableIdx2] = Index2Color(colorTable[((((tableIdx2 << 9) * (31 - v5) >> 16)
                                                                                       + v5) << 10) | 32 * (((tableIdx2 << 9) * (31 - v6) >> 16) + v6) | ((((tableIdx2 << 9) * (31 - v7)) >> 16) + v7)]);

	    // intensityColorTable[256 * tableIdx + tableIdx2] = (colorTable[(((tableIdx2 << 9) * v7) >> 16) | (((tableIdx2 << 9) * v5) >> 16 << 10) | 32 * (((tableIdx2 << 9) * v6) >> 16)]);

	    // intensityColorTable[256 * tableIdx + 128 + tableIdx2] = (colorTable[(((((tableIdx2 << 9) * (31 - v5)) >> 16)
     //                                                                                   + v5) << 10) | 32 * ((((tableIdx2 << 9) * (31 - v6)) >> 16) + v6) | ((((tableIdx2 << 9) * (31 - v7)) >> 16) + v7)]);
	}
}

$.get("lut/color_rgb.json", function(_color_rgb) {
$.get("lut/colorTable.json", function(_colorTable) {
	color_rgb = _color_rgb
	colorTable = _colorTable

	// set mapped colors
	for(var i = 0; i < 256; i++) {
		var r = color_rgb[i][0]
		var g = color_rgb[i][1]
		var b = color_rgb[i][2]

		mappedColor[i] = (r > 0 || g > 0 || b > 0) // valid palette colors
		/*if(mappedColor[i])
			console.log("%d is mapped", i)*/
	}

	mappedColor[228] = 1 // HACK: 228 in color.pal is legitimately RGB (0, 0, 0) and we count it as unmapped, but it is

	for(var tableIdx = 0; tableIdx < 256; tableIdx++) {
		if(mappedColor[tableIdx])
			setIntensityTableColor(tableIdx)
		else {
			// memset(intensityColorTable + 256*tableIdx, 0, 256)
			/*var startIdx = 256 * tableIdx
			intensityColorTable.fill(0, startIdx, startIdx + 256)*/
			for(var i = 0; i < 256; i++)
				intensityColorTable[256 * tableIdx + i] = 0
		}
	}

	// var t = 1
	// for(var i = 0; i < 256; i++) {
	// 	console.log("intensityColorTable[256*%d + %d] = 0x%s", t, i, intensityColorTable[256*t + i].toString(16))
	// }

	// console.log("-----------------")
	var numErrors = 0;
	for(var i = 0; i < 65536; i++) {
		if(intensityColorTable[i] !== Lighting.intensityColorTable[i]) {
			console.log("%d (table %d) differs (%s, expected %s)", i, i / 256 | 0, intensityColorTable[i].toString(16), Lighting.intensityColorTable[i].toString(16))
			numErrors++;
		}
	}

	console.log("Done, " + numErrors + " errors");


}, "json")
}, "json")
</script>