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Optimized colorspace.js AlternateCS_getRgbBuffer

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p01 2014-05-08 17:31:11 +02:00
parent 95fda4fcdc
commit 8cfd024e48
1 changed files with 14 additions and 7 deletions
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21
src/shared/colorspace.js
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@ -396,6 +396,7 @@ var AlternateCS = (function AlternateCSClosure() {
getRgbBuffer: function AlternateCS_getRgbBuffer(src, srcOffset, count, getRgbBuffer: function AlternateCS_getRgbBuffer(src, srcOffset, count,
dest, destOffset, bits, dest, destOffset, bits,
alpha01) { alpha01) {
var tinted;
var tintFn = this.tintFn; var tintFn = this.tintFn;
var base = this.base; var base = this.base;
var scale = 1 / ((1 << bits) - 1); var scale = 1 / ((1 << bits) - 1);
@ -409,16 +410,22 @@ var AlternateCS = (function AlternateCSClosure() {
var scaled = new Float32Array(numComps); var scaled = new Float32Array(numComps);
var i, j; var i, j;
for (i = 0; i < count; i++) { if (usesZeroToOneRange) {
for (j = 0; j < numComps; j++) { for (i = 0; i < count; i++) {
scaled[j] = src[srcOffset++] * scale; for (j = 0; j < numComps; j++) {
} scaled[j] = src[srcOffset++] * scale;
var tinted = tintFn(scaled); }
if (usesZeroToOneRange) { tinted = tintFn(scaled);
for (j = 0; j < baseNumComps; j++) { for (j = 0; j < baseNumComps; j++) {
baseBuf[pos++] = tinted[j] * 255; baseBuf[pos++] = tinted[j] * 255;
} }
} else { }
} else {
for (i = 0; i < count; i++) {
for (j = 0; j < numComps; j++) {
scaled[j] = src[srcOffset++] * scale;
}
tinted = tintFn(scaled);
base.getRgbItem(tinted, 0, baseBuf, pos); base.getRgbItem(tinted, 0, baseBuf, pos);
pos += baseNumComps; pos += baseNumComps;
} }