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Unified Diff: src/core/SkBitmapFilter.h

Issue 1724283003: Revert of Simple cleanups related to SkFixed. (Closed) Base URL: https://skia.googlesource.com/skia@master
Patch Set: Created 4 years, 10 months ago
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Index: src/core/SkBitmapFilter.h
diff --git a/src/core/SkBitmapFilter.h b/src/core/SkBitmapFilter.h
index ca3e0930f27570ebff359e95370a81f59d189f5c..6fa8edde3460ab3992cc14f0e90c216f83665436 100644
--- a/src/core/SkBitmapFilter.h
+++ b/src/core/SkBitmapFilter.h
@@ -27,6 +27,15 @@
fLookupMultiplier = this->invWidth() * (SKBITMAP_FILTER_TABLE_SIZE-1);
}
virtual ~SkBitmapFilter() {}
+
+ SkFixed lookup(float x) const {
+ if (!fPrecomputed) {
+ precomputeTable();
+ }
+ int filter_idx = int(sk_float_abs(x * fLookupMultiplier));
+ SkASSERT(filter_idx < SKBITMAP_FILTER_TABLE_SIZE);
+ return fFilterTable[filter_idx];
+ }
SkScalar lookupScalar(float x) const {
if (!fPrecomputed) {
@@ -58,16 +67,19 @@
float fLookupMultiplier;
mutable bool fPrecomputed;
+ mutable SkFixed fFilterTable[SKBITMAP_FILTER_TABLE_SIZE];
mutable SkScalar fFilterTableScalar[SKBITMAP_FILTER_TABLE_SIZE];
private:
void precomputeTable() const {
fPrecomputed = true;
+ SkFixed *ftp = fFilterTable;
SkScalar *ftpScalar = fFilterTableScalar;
for (int x = 0; x < SKBITMAP_FILTER_TABLE_SIZE; ++x) {
float fx = ((float)x + .5f) * this->width() / SKBITMAP_FILTER_TABLE_SIZE;
float filter_value = evaluate(fx);
*ftpScalar++ = filter_value;
+ *ftp++ = SkFloatToFixed(filter_value);
}
}
};
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