41 lines
1.3 KiB
C++
41 lines
1.3 KiB
C++
#include "SkPMFloat.h"
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#include "Test.h"
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DEF_TEST(SkPMFloat, r) {
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// Test SkPMColor <-> SkPMFloat
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SkPMColor c = SkPreMultiplyColor(0xFFCC9933);
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SkPMFloat pmf;
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pmf.set(c);
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REPORTER_ASSERT(r, SkScalarNearlyEqual(1.0f, pmf.a()));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(0.8f, pmf.r()));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(0.6f, pmf.g()));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(0.2f, pmf.b()));
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REPORTER_ASSERT(r, c == pmf.get());
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// Test clamping.
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SkPMFloat unclamped;
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unclamped.setA(+2.0f);
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unclamped.setR(+0.2f);
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unclamped.setG(-0.2f);
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unclamped.setB(-5.0f);
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SkPMFloat clamped;
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clamped.set(unclamped.clamped());
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REPORTER_ASSERT(r, SkScalarNearlyEqual(1.0f, clamped.a()));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(0.2f, clamped.r()));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(0.0f, clamped.g()));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(0.0f, clamped.b()));
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// Test SkPMFloat <-> Sk4f conversion.
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Sk4f fs = clamped;
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SkPMFloat scaled = fs.multiply(Sk4f(4,4,4,4));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(4.0f, scaled.a()));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(0.8f, scaled.r()));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(0.0f, scaled.g()));
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REPORTER_ASSERT(r, SkScalarNearlyEqual(0.0f, scaled.b()));
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}
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