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Merge pull request #13808 from brendandahl/pattern-cache-v2

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Improve caching of shading patterns. (bug 1721949)
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Brendan Dahl 2021-07-28 11:17:16 -07:00 • committed by GitHub
commit 4ad5c5d52a
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4 changed files with 85 additions and 60 deletions
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12
src/core/evaluator.js
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@ -1315,20 +1315,17 @@ class PartialEvaluator {
}
parseShading({
keyObj,
shading,
resources,
localColorSpaceCache,
localShadingPatternCache,
matrix = null,
}) {
// Shadings and patterns may be referenced by the same name but the resource
// dictionary could be different so we can't use the name for the cache key.
let id = localShadingPatternCache.get(keyObj);
let id = localShadingPatternCache.get(shading);
if (!id) {
var shadingFill = Pattern.parseShading(
shading,
matrix,
this.xref,
resources,
this.handler,
@ -1337,7 +1334,7 @@ class PartialEvaluator {
);
const patternIR = shadingFill.getIR();
id = `pattern_${this.idFactory.createObjId()}`;
localShadingPatternCache.set(keyObj, id);
localShadingPatternCache.set(shading, id);
this.handler.send("obj", [id, this.pageIndex, "Pattern", patternIR]);
}
return id;
@ -1402,14 +1399,12 @@ class PartialEvaluator {
const shading = dict.get("Shading");
const matrix = dict.getArray("Matrix");
const objId = this.parseShading({
keyObj: pattern,
shading,
matrix,
resources,
localColorSpaceCache,
localShadingPatternCache,
});
operatorList.addOp(fn, ["Shading", objId]);
operatorList.addOp(fn, ["Shading", objId, matrix]);
return undefined;
}
throw new FormatError(`Unknown PatternType: ${typeNum}`);
@ -1942,7 +1937,6 @@ class PartialEvaluator {
throw new FormatError("No shading object found");
}
const patternId = self.parseShading({
keyObj: shading,
shading,
resources,
localColorSpaceCache,