add getTypes() to SkMatrix44, to cache how complex the matrix is.
add bench
optimize operator== by performing 4 compares in a row before checking
optimize setconcat by noting when we can write the answer directly into this
At least on this macbook, I had to mark helpers like isIdentity() as inline to get them inlined.
Review URL: https://codereview.appspot.com/6863053
git-svn-id: http://skia.googlecode.com/svn/trunk@6655 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/bench/Matrix44Bench.cpp b/bench/Matrix44Bench.cpp
new file mode 100644
index 0000000..f10870c
--- /dev/null
+++ b/bench/Matrix44Bench.cpp
@@ -0,0 +1,140 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#include "SkBenchmark.h"
+#include "SkMatrix44.h"
+#include "SkRandom.h"
+#include "SkString.h"
+
+class Matrix44Bench : public SkBenchmark {
+ SkString fName;
+ enum { N = 10000 };
+public:
+ Matrix44Bench(void* param, const char name[]) : INHERITED(param) {
+ fName.printf("matrix44_%s", name);
+ fIsRendering = false;
+ }
+
+ virtual void performTest() = 0;
+
+protected:
+ virtual int mulLoopCount() const { return 1; }
+
+ virtual const char* onGetName() {
+ return fName.c_str();
+ }
+
+ virtual void onDraw(SkCanvas* canvas) {
+ int n = SkBENCHLOOP(N * this->mulLoopCount());
+ for (int i = 0; i < n; i++) {
+ this->performTest();
+ }
+ }
+
+private:
+ typedef SkBenchmark INHERITED;
+};
+
+class EqualsMatrix44Bench : public Matrix44Bench {
+public:
+ EqualsMatrix44Bench(void* param) : INHERITED(param, "equals") {
+ fM1.set(0, 0, 0);
+ fM2.set(3, 3, 0);
+ }
+protected:
+ virtual void performTest() {
+ for (int i = 0; i < 10; ++i) {
+ fM0 == fM1;
+ fM1 == fM2;
+ fM2 == fM0;
+ }
+ }
+private:
+ SkMatrix44 fM0, fM1, fM2;
+ typedef Matrix44Bench INHERITED;
+};
+
+class PreScaleMatrix44Bench : public Matrix44Bench {
+public:
+ PreScaleMatrix44Bench(void* param) : INHERITED(param, "prescale") {
+ fX = fY = fZ = SkDoubleToMScalar(1.5);
+ }
+protected:
+ virtual void performTest() {
+ fM0.reset();
+ for (int i = 0; i < 10; ++i) {
+ fM0.preScale(fX, fY, fZ);
+ }
+ }
+private:
+ SkMatrix44 fM0;
+ SkMScalar fX, fY, fZ;
+ typedef Matrix44Bench INHERITED;
+};
+
+class PostScaleMatrix44Bench : public Matrix44Bench {
+public:
+ PostScaleMatrix44Bench(void* param) : INHERITED(param, "postscale") {
+ fX = fY = fZ = SkDoubleToMScalar(1.5);
+ }
+protected:
+ virtual void performTest() {
+ fM0.reset();
+ for (int i = 0; i < 10; ++i) {
+ fM0.postScale(fX, fY, fZ);
+ }
+ }
+private:
+ SkMatrix44 fM0;
+ SkMScalar fX, fY, fZ;
+ typedef Matrix44Bench INHERITED;
+};
+
+class SetConcatMatrix44Bench : public Matrix44Bench {
+public:
+ SetConcatMatrix44Bench(void* param) : INHERITED(param, "setconcat") {
+ fX = fY = fZ = SkDoubleToMScalar(1.5);
+ fM1.setScale(fX, fY, fZ);
+ fM2.setTranslate(fX, fY, fZ);
+ }
+protected:
+ virtual void performTest() {
+ fM0.reset(); // just to normalize this test with prescale/postscale
+ for (int i = 0; i < 10; ++i) {
+ fM0.setConcat(fM1, fM2);
+ }
+ }
+private:
+ SkMatrix44 fM0, fM1, fM2;
+ SkMScalar fX, fY, fZ;
+ typedef Matrix44Bench INHERITED;
+};
+
+class GetTypeMatrix44Bench : public Matrix44Bench {
+public:
+ GetTypeMatrix44Bench(void* param) : INHERITED(param, "gettype") {}
+protected:
+ // Putting random generation of the matrix inside performTest()
+ // would help us avoid anomalous runs, but takes up 25% or
+ // more of the function time.
+ virtual void performTest() {
+ for (int i = 0; i < 20; ++i) {
+ fMatrix.set(1, 2, 1); // to invalidate the type-cache
+ fMatrix.getType();
+ }
+ }
+private:
+ SkMatrix44 fMatrix;
+ typedef Matrix44Bench INHERITED;
+};
+
+DEF_BENCH( return new EqualsMatrix44Bench(p); )
+DEF_BENCH( return new PreScaleMatrix44Bench(p); )
+DEF_BENCH( return new PostScaleMatrix44Bench(p); )
+DEF_BENCH( return new SetConcatMatrix44Bench(p); )
+DEF_BENCH( return new GetTypeMatrix44Bench(p); )
+