зеркало из https://github.com/mozilla/moz-skia.git
335 строки
12 KiB
C++
335 строки
12 KiB
C++
/*
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* Copyright 2012 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "Benchmark.h"
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#include "SkCanvas.h"
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#include "SkPaint.h"
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#include "SkRandom.h"
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#include "SkShader.h"
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#include "SkString.h"
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// This bench simulates the calls Skia sees from various HTML5 canvas
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// game bench marks
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class GameBench : public Benchmark {
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public:
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enum Type {
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kScale_Type,
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kTranslate_Type,
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kRotate_Type
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};
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enum Clear {
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kFull_Clear,
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kPartial_Clear
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};
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GameBench(Type type, Clear clear,
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bool aligned = false, bool useAtlas = false,
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bool useDrawVertices = false)
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: fType(type)
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, fClear(clear)
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, fAligned(aligned)
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, fUseAtlas(useAtlas)
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, fUseDrawVertices(useDrawVertices)
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, fName("game")
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, fNumSaved(0)
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, fInitialized(false) {
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switch (fType) {
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case kScale_Type:
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fName.append("_scale");
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break;
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case kTranslate_Type:
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fName.append("_trans");
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break;
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case kRotate_Type:
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fName.append("_rot");
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break;
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};
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if (aligned) {
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fName.append("_aligned");
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}
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if (kPartial_Clear == clear) {
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fName.append("_partial");
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} else {
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fName.append("_full");
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}
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if (useAtlas) {
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fName.append("_atlas");
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}
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if (useDrawVertices) {
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fName.append("_drawVerts");
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}
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// It's HTML 5 canvas, so always AA
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fName.append("_aa");
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}
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protected:
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virtual const char* onGetName() SK_OVERRIDE {
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return fName.c_str();
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}
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virtual void onPreDraw() SK_OVERRIDE {
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if (!fInitialized) {
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this->makeCheckerboard();
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this->makeAtlas();
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fInitialized = true;
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}
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}
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virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
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SkRandom scaleRand;
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SkRandom transRand;
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SkRandom rotRand;
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int width, height;
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if (fUseAtlas) {
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width = kAtlasCellWidth;
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height = kAtlasCellHeight;
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} else {
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width = kCheckerboardWidth;
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height = kCheckerboardHeight;
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}
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SkPaint clearPaint;
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clearPaint.setColor(0xFF000000);
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clearPaint.setAntiAlias(true);
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SkISize size = canvas->getDeviceSize();
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SkScalar maxTransX, maxTransY;
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if (kScale_Type == fType) {
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maxTransX = size.fWidth - (1.5f * width);
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maxTransY = size.fHeight - (1.5f * height);
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} else if (kTranslate_Type == fType) {
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maxTransX = SkIntToScalar(size.fWidth - width);
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maxTransY = SkIntToScalar(size.fHeight - height);
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} else {
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SkASSERT(kRotate_Type == fType);
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// Yes, some rotations will be off the top and left sides
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maxTransX = size.fWidth - SK_ScalarSqrt2 * height;
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maxTransY = size.fHeight - SK_ScalarSqrt2 * height;
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}
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SkMatrix mat;
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SkRect dst = { 0, 0, SkIntToScalar(width), SkIntToScalar(height) };
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SkRect clearRect = { -1.0f, -1.0f, width+1.0f, height+1.0f };
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SkPoint verts[4] = { // for drawVertices path
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{ 0, 0 },
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{ 0, SkIntToScalar(height) },
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{ SkIntToScalar(width), SkIntToScalar(height) },
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{ SkIntToScalar(width), 0 }
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};
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uint16_t indices[6] = { 0, 1, 2, 0, 2, 3 };
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SkPaint p;
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p.setColor(0xFF000000);
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p.setFilterLevel(SkPaint::kLow_FilterLevel);
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SkPaint p2; // for drawVertices path
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p2.setColor(0xFF000000);
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p2.setFilterLevel(SkPaint::kLow_FilterLevel);
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p2.setShader(SkShader::CreateBitmapShader(fAtlas,
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SkShader::kClamp_TileMode,
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SkShader::kClamp_TileMode))->unref();
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for (int i = 0; i < loops; ++i, ++fNumSaved) {
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if (0 == i % kNumBeforeClear) {
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if (kPartial_Clear == fClear) {
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for (int j = 0; j < fNumSaved; ++j) {
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canvas->setMatrix(SkMatrix::I());
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mat.setTranslate(fSaved[j][0], fSaved[j][1]);
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if (kScale_Type == fType) {
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mat.preScale(fSaved[j][2], fSaved[j][2]);
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} else if (kRotate_Type == fType) {
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mat.preRotate(fSaved[j][2]);
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}
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canvas->concat(mat);
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canvas->drawRect(clearRect, clearPaint);
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}
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} else {
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canvas->clear(0xFF000000);
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}
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fNumSaved = 0;
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}
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SkASSERT(fNumSaved < kNumBeforeClear);
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canvas->setMatrix(SkMatrix::I());
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fSaved[fNumSaved][0] = transRand.nextRangeScalar(0.0f, maxTransX);
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fSaved[fNumSaved][1] = transRand.nextRangeScalar(0.0f, maxTransY);
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if (fAligned) {
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// make the translations integer aligned
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fSaved[fNumSaved][0] = SkScalarFloorToScalar(fSaved[fNumSaved][0]);
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fSaved[fNumSaved][1] = SkScalarFloorToScalar(fSaved[fNumSaved][1]);
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}
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mat.setTranslate(fSaved[fNumSaved][0], fSaved[fNumSaved][1]);
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if (kScale_Type == fType) {
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fSaved[fNumSaved][2] = scaleRand.nextRangeScalar(0.5f, 1.5f);
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mat.preScale(fSaved[fNumSaved][2], fSaved[fNumSaved][2]);
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} else if (kRotate_Type == fType) {
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fSaved[fNumSaved][2] = rotRand.nextRangeScalar(0.0f, 360.0f);
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mat.preRotate(fSaved[fNumSaved][2]);
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}
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canvas->concat(mat);
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if (fUseAtlas) {
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const int curCell = i % (kNumAtlasedX * kNumAtlasedY);
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SkIRect src = fAtlasRects[curCell % (kNumAtlasedX)][curCell / (kNumAtlasedX)];
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if (fUseDrawVertices) {
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SkPoint uvs[4] = {
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{ SkIntToScalar(src.fLeft), SkIntToScalar(src.fBottom) },
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{ SkIntToScalar(src.fLeft), SkIntToScalar(src.fTop) },
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{ SkIntToScalar(src.fRight), SkIntToScalar(src.fTop) },
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{ SkIntToScalar(src.fRight), SkIntToScalar(src.fBottom) },
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};
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canvas->drawVertices(SkCanvas::kTriangles_VertexMode,
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4, verts, uvs, NULL, NULL,
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indices, 6, p2);
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} else {
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canvas->drawBitmapRect(fAtlas, &src, dst, &p,
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SkCanvas::kBleed_DrawBitmapRectFlag);
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}
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} else {
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canvas->drawBitmapRect(fCheckerboard, NULL, dst, &p);
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}
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}
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}
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private:
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static const int kCheckerboardWidth = 64;
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static const int kCheckerboardHeight = 128;
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static const int kAtlasCellWidth = 48;
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static const int kAtlasCellHeight = 36;
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static const int kNumAtlasedX = 5;
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static const int kNumAtlasedY = 5;
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static const int kAtlasSpacer = 2;
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static const int kTotAtlasWidth = kNumAtlasedX * kAtlasCellWidth +
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(kNumAtlasedX+1) * kAtlasSpacer;
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static const int kTotAtlasHeight = kNumAtlasedY * kAtlasCellHeight +
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(kNumAtlasedY+1) * kAtlasSpacer;
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static const int kNumBeforeClear = 100;
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Type fType;
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Clear fClear;
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bool fAligned;
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bool fUseAtlas;
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bool fUseDrawVertices;
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SkString fName;
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int fNumSaved; // num draws stored in 'fSaved'
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bool fInitialized;
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// 0 & 1 are always x & y translate. 2 is either scale or rotate.
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SkScalar fSaved[kNumBeforeClear][3];
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SkBitmap fCheckerboard;
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SkBitmap fAtlas;
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SkIRect fAtlasRects[kNumAtlasedX][kNumAtlasedY];
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// Note: the resulting checker board has transparency
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void makeCheckerboard() {
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static int kCheckSize = 16;
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fCheckerboard.allocN32Pixels(kCheckerboardWidth, kCheckerboardHeight);
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SkAutoLockPixels lock(fCheckerboard);
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for (int y = 0; y < kCheckerboardHeight; ++y) {
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int even = (y / kCheckSize) % 2;
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SkPMColor* scanline = fCheckerboard.getAddr32(0, y);
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for (int x = 0; x < kCheckerboardWidth; ++x) {
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if (even == (x / kCheckSize) % 2) {
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*scanline++ = 0xFFFF0000;
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} else {
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*scanline++ = 0x00000000;
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}
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}
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}
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}
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// Note: the resulting atlas has transparency
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void makeAtlas() {
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SkRandom rand;
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SkColor colors[kNumAtlasedX][kNumAtlasedY];
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for (int y = 0; y < kNumAtlasedY; ++y) {
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for (int x = 0; x < kNumAtlasedX; ++x) {
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colors[x][y] = rand.nextU() | 0xff000000;
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fAtlasRects[x][y] = SkIRect::MakeXYWH(kAtlasSpacer + x * (kAtlasCellWidth + kAtlasSpacer),
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kAtlasSpacer + y * (kAtlasCellHeight + kAtlasSpacer),
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kAtlasCellWidth,
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kAtlasCellHeight);
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}
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}
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fAtlas.allocN32Pixels(kTotAtlasWidth, kTotAtlasHeight);
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SkAutoLockPixels lock(fAtlas);
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for (int y = 0; y < kTotAtlasHeight; ++y) {
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int colorY = y / (kAtlasCellHeight + kAtlasSpacer);
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bool inColorY = (y % (kAtlasCellHeight + kAtlasSpacer)) >= kAtlasSpacer;
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SkPMColor* scanline = fAtlas.getAddr32(0, y);
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for (int x = 0; x < kTotAtlasWidth; ++x, ++scanline) {
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int colorX = x / (kAtlasCellWidth + kAtlasSpacer);
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bool inColorX = (x % (kAtlasCellWidth + kAtlasSpacer)) >= kAtlasSpacer;
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if (inColorX && inColorY) {
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SkASSERT(colorX < kNumAtlasedX && colorY < kNumAtlasedY);
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*scanline = colors[colorX][colorY];
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} else {
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*scanline = 0x00000000;
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}
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}
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}
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}
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typedef Benchmark INHERITED;
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};
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// Partial clear
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kScale_Type,
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GameBench::kPartial_Clear)); )
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
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GameBench::kPartial_Clear)); )
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
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GameBench::kPartial_Clear, true)); )
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kRotate_Type,
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GameBench::kPartial_Clear)); )
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// Full clear
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kScale_Type,
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GameBench::kFull_Clear)); )
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
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GameBench::kFull_Clear)); )
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
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GameBench::kFull_Clear, true)); )
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kRotate_Type,
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GameBench::kFull_Clear)); )
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// Atlased
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
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GameBench::kFull_Clear, false, true)); )
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DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
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GameBench::kFull_Clear, false, true, true)); )
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