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skia2/bench/GameBench.cpp
commit-bot@chromium.org 44e3f715e6 GameBench: curCell doesn't need to be extra state. 
We're using a static curCell to loop around the atlas.  We can just use i.

Noticed this when TSAN complained about it.  Parallel invocations of the
game bench were stomping on each other's curCell.

BUG=skia:1792
R=robertphillips@google.com, mtklein@google.com

Author: mtklein@chromium.org

Review URL: https://codereview.chromium.org/270273006

git-svn-id: http://skia.googlecode.com/svn/trunk@14617 2bbb7eff-a529-9590-31e7-b0007b416f81
2014-05-07 17:12:55 +00:00

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/*
* 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 "SkCanvas.h"
#include "SkPaint.h"
#include "SkRandom.h"
#include "SkShader.h"
#include "SkString.h"
// This bench simulates the calls Skia sees from various HTML5 canvas
// game bench marks
class GameBench : public SkBenchmark {
public:
enum Type {
kScale_Type,
kTranslate_Type,
kRotate_Type
};
enum Clear {
kFull_Clear,
kPartial_Clear
};
GameBench(Type type, Clear clear,
bool aligned = false, bool useAtlas = false,
bool useDrawVertices = false)
: fType(type)
, fClear(clear)
, fAligned(aligned)
, fUseAtlas(useAtlas)
, fUseDrawVertices(useDrawVertices)
, fName("game")
, fNumSaved(0)
, fInitialized(false) {
switch (fType) {
case kScale_Type:
fName.append("_scale");
break;
case kTranslate_Type:
fName.append("_trans");
break;
case kRotate_Type:
fName.append("_rot");
break;
};
if (aligned) {
fName.append("_aligned");
}
if (kPartial_Clear == clear) {
fName.append("_partial");
} else {
fName.append("_full");
}
if (useAtlas) {
fName.append("_atlas");
}
if (useDrawVertices) {
fName.append("_drawVerts");
}
// It's HTML 5 canvas, so always AA
fName.append("_aa");
}
protected:
virtual const char* onGetName() SK_OVERRIDE {
return fName.c_str();
}
virtual void onPreDraw() SK_OVERRIDE {
if (!fInitialized) {
this->makeCheckerboard();
this->makeAtlas();
fInitialized = true;
}
}
virtual void onDraw(const int loops, SkCanvas* canvas) SK_OVERRIDE {
SkRandom scaleRand;
SkRandom transRand;
SkRandom rotRand;
int width, height;
if (fUseAtlas) {
width = kAtlasCellWidth;
height = kAtlasCellHeight;
} else {
width = kCheckerboardWidth;
height = kCheckerboardHeight;
}
SkPaint clearPaint;
clearPaint.setColor(0xFF000000);
clearPaint.setAntiAlias(true);
SkISize size = canvas->getDeviceSize();
SkScalar maxTransX, maxTransY;
if (kScale_Type == fType) {
maxTransX = size.fWidth - (1.5f * width);
maxTransY = size.fHeight - (1.5f * height);
} else if (kTranslate_Type == fType) {
maxTransX = SkIntToScalar(size.fWidth - width);
maxTransY = SkIntToScalar(size.fHeight - height);
} else {
SkASSERT(kRotate_Type == fType);
// Yes, some rotations will be off the top and left sides
maxTransX = size.fWidth - SK_ScalarSqrt2 * height;
maxTransY = size.fHeight - SK_ScalarSqrt2 * height;
}
SkMatrix mat;
SkRect dst = { 0, 0, SkIntToScalar(width), SkIntToScalar(height) };
SkRect clearRect = { -1.0f, -1.0f, width+1.0f, height+1.0f };
SkPoint verts[4] = { // for drawVertices path
{ 0, 0 },
{ 0, SkIntToScalar(height) },
{ SkIntToScalar(width), SkIntToScalar(height) },
{ SkIntToScalar(width), 0 }
};
uint16_t indices[6] = { 0, 1, 2, 0, 2, 3 };
SkPaint p;
p.setColor(0xFF000000);
p.setFilterLevel(SkPaint::kLow_FilterLevel);
SkPaint p2; // for drawVertices path
p2.setColor(0xFF000000);
p2.setFilterLevel(SkPaint::kLow_FilterLevel);
p2.setShader(SkShader::CreateBitmapShader(fAtlas,
SkShader::kClamp_TileMode,
SkShader::kClamp_TileMode))->unref();
for (int i = 0; i < loops; ++i, ++fNumSaved) {
if (0 == i % kNumBeforeClear) {
if (kPartial_Clear == fClear) {
for (int j = 0; j < fNumSaved; ++j) {
canvas->setMatrix(SkMatrix::I());
mat.setTranslate(fSaved[j][0], fSaved[j][1]);
if (kScale_Type == fType) {
mat.preScale(fSaved[j][2], fSaved[j][2]);
} else if (kRotate_Type == fType) {
mat.preRotate(fSaved[j][2]);
}
canvas->concat(mat);
canvas->drawRect(clearRect, clearPaint);
}
} else {
canvas->clear(0xFF000000);
}
fNumSaved = 0;
}
SkASSERT(fNumSaved < kNumBeforeClear);
canvas->setMatrix(SkMatrix::I());
fSaved[fNumSaved][0] = transRand.nextRangeScalar(0.0f, maxTransX);
fSaved[fNumSaved][1] = transRand.nextRangeScalar(0.0f, maxTransY);
if (fAligned) {
// make the translations integer aligned
fSaved[fNumSaved][0] = SkScalarFloorToScalar(fSaved[fNumSaved][0]);
fSaved[fNumSaved][1] = SkScalarFloorToScalar(fSaved[fNumSaved][1]);
}
mat.setTranslate(fSaved[fNumSaved][0], fSaved[fNumSaved][1]);
if (kScale_Type == fType) {
fSaved[fNumSaved][2] = scaleRand.nextRangeScalar(0.5f, 1.5f);
mat.preScale(fSaved[fNumSaved][2], fSaved[fNumSaved][2]);
} else if (kRotate_Type == fType) {
fSaved[fNumSaved][2] = rotRand.nextRangeScalar(0.0f, 360.0f);
mat.preRotate(fSaved[fNumSaved][2]);
}
canvas->concat(mat);
if (fUseAtlas) {
const int curCell = i % (kNumAtlasedX * kNumAtlasedY);
SkIRect src = fAtlasRects[curCell % (kNumAtlasedX)][curCell / (kNumAtlasedX)];
if (fUseDrawVertices) {
SkPoint uvs[4] = {
{ SkIntToScalar(src.fLeft), SkIntToScalar(src.fBottom) },
{ SkIntToScalar(src.fLeft), SkIntToScalar(src.fTop) },
{ SkIntToScalar(src.fRight), SkIntToScalar(src.fTop) },
{ SkIntToScalar(src.fRight), SkIntToScalar(src.fBottom) },
};
canvas->drawVertices(SkCanvas::kTriangles_VertexMode,
4, verts, uvs, NULL, NULL,
indices, 6, p2);
} else {
canvas->drawBitmapRect(fAtlas, &src, dst, &p,
SkCanvas::kBleed_DrawBitmapRectFlag);
}
} else {
canvas->drawBitmapRect(fCheckerboard, NULL, dst, &p);
}
}
}
private:
static const int kCheckerboardWidth = 64;
static const int kCheckerboardHeight = 128;
static const int kAtlasCellWidth = 48;
static const int kAtlasCellHeight = 36;
static const int kNumAtlasedX = 5;
static const int kNumAtlasedY = 5;
static const int kAtlasSpacer = 2;
static const int kTotAtlasWidth = kNumAtlasedX * kAtlasCellWidth +
(kNumAtlasedX+1) * kAtlasSpacer;
static const int kTotAtlasHeight = kNumAtlasedY * kAtlasCellHeight +
(kNumAtlasedY+1) * kAtlasSpacer;
static const int kNumBeforeClear = 100;
Type fType;
Clear fClear;
bool fAligned;
bool fUseAtlas;
bool fUseDrawVertices;
SkString fName;
int fNumSaved; // num draws stored in 'fSaved'
bool fInitialized;
// 0 & 1 are always x & y translate. 2 is either scale or rotate.
SkScalar fSaved[kNumBeforeClear][3];
SkBitmap fCheckerboard;
SkBitmap fAtlas;
SkIRect fAtlasRects[kNumAtlasedX][kNumAtlasedY];
// Note: the resulting checker board has transparency
void makeCheckerboard() {
static int kCheckSize = 16;
fCheckerboard.setConfig(SkBitmap::kARGB_8888_Config,
kCheckerboardWidth, kCheckerboardHeight);
fCheckerboard.allocPixels();
SkAutoLockPixels lock(fCheckerboard);
for (int y = 0; y < kCheckerboardHeight; ++y) {
int even = (y / kCheckSize) % 2;
SkPMColor* scanline = fCheckerboard.getAddr32(0, y);
for (int x = 0; x < kCheckerboardWidth; ++x) {
if (even == (x / kCheckSize) % 2) {
*scanline++ = 0xFFFF0000;
} else {
*scanline++ = 0x00000000;
}
}
}
}
// Note: the resulting atlas has transparency
void makeAtlas() {
SkRandom rand;
SkColor colors[kNumAtlasedX][kNumAtlasedY];
for (int y = 0; y < kNumAtlasedY; ++y) {
for (int x = 0; x < kNumAtlasedX; ++x) {
colors[x][y] = rand.nextU() | 0xff000000;
fAtlasRects[x][y] = SkIRect::MakeXYWH(kAtlasSpacer + x * (kAtlasCellWidth + kAtlasSpacer),
kAtlasSpacer + y * (kAtlasCellHeight + kAtlasSpacer),
kAtlasCellWidth,
kAtlasCellHeight);
}
}
fAtlas.setConfig(SkBitmap::kARGB_8888_Config, kTotAtlasWidth, kTotAtlasHeight);
fAtlas.allocPixels();
SkAutoLockPixels lock(fAtlas);
for (int y = 0; y < kTotAtlasHeight; ++y) {
int colorY = y / (kAtlasCellHeight + kAtlasSpacer);
bool inColorY = (y % (kAtlasCellHeight + kAtlasSpacer)) >= kAtlasSpacer;
SkPMColor* scanline = fAtlas.getAddr32(0, y);
for (int x = 0; x < kTotAtlasWidth; ++x, ++scanline) {
int colorX = x / (kAtlasCellWidth + kAtlasSpacer);
bool inColorX = (x % (kAtlasCellWidth + kAtlasSpacer)) >= kAtlasSpacer;
if (inColorX && inColorY) {
SkASSERT(colorX < kNumAtlasedX && colorY < kNumAtlasedY);
*scanline = colors[colorX][colorY];
} else {
*scanline = 0x00000000;
}
}
}
}
typedef SkBenchmark INHERITED;
};
// Partial clear
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kScale_Type,
GameBench::kPartial_Clear)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
GameBench::kPartial_Clear)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
GameBench::kPartial_Clear, true)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kRotate_Type,
GameBench::kPartial_Clear)); )
// Full clear
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kScale_Type,
GameBench::kFull_Clear)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
GameBench::kFull_Clear)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
GameBench::kFull_Clear, true)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kRotate_Type,
GameBench::kFull_Clear)); )
// Atlased
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
GameBench::kFull_Clear, false, true)); )
DEF_BENCH( return SkNEW_ARGS(GameBench, (GameBench::kTranslate_Type,
GameBench::kFull_Clear, false, true, true)); )
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