skia2/bench/VertBench.cpp
commit-bot@chromium.org 6485b0be74 Switch out random number generator for tests, benches, samples.
This change makes tests, benches and samples use the new SkMWCRandom PRNG. GMs will be saved for another time, as they'll require rebaselining.

R=reed@google.com, bsalomon@google.com

Author: jvanverth@google.com

Review URL: https://chromiumcodereview.appspot.com/23653018

git-svn-id: http://skia.googlecode.com/svn/trunk@11136 2bbb7eff-a529-9590-31e7-b0007b416f81
2013-09-06 19:05:11 +00:00

99 lines
2.4 KiB
C++

/*
* Copyright 2011 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 "SkString.h"
#include "SkShader.h"
enum VertFlags {
kColors_VertFlag,
kTexture_VertFlag,
};
class VertBench : public SkBenchmark {
SkString fName;
enum {
W = 640,
H = 480,
ROW = 20,
COL = 20,
PTS = (ROW + 1) * (COL + 1),
IDX = ROW * COL * 6,
N = SkBENCHLOOP(10)
};
SkPoint fPts[PTS];
SkColor fColors[PTS];
uint16_t fIdx[IDX];
static void load_2_tris(uint16_t idx[], int x, int y, int rb) {
int n = y * rb + x;
idx[0] = n; idx[1] = n + 1; idx[2] = rb + n + 1;
idx[3] = n; idx[4] = rb + n + 1; idx[5] = n + rb;
}
public:
VertBench(void* param) : INHERITED(param) {
const SkScalar dx = SkIntToScalar(W) / COL;
const SkScalar dy = SkIntToScalar(H) / COL;
SkPoint* pts = fPts;
uint16_t* idx = fIdx;
SkScalar yy = 0;
for (int y = 0; y <= ROW; y++) {
SkScalar xx = 0;
for (int x = 0; x <= COL; ++x) {
pts->set(xx, yy);
pts += 1;
xx += dx;
if (x < COL && y < ROW) {
load_2_tris(idx, x, y, COL + 1);
for (int i = 0; i < 6; i++) {
SkASSERT(idx[i] < PTS);
}
idx += 6;
}
}
yy += dy;
}
SkASSERT(PTS == pts - fPts);
SkASSERT(IDX == idx - fIdx);
SkMWCRandom rand;
for (int i = 0; i < PTS; ++i) {
fColors[i] = rand.nextU() | (0xFF << 24);
}
fName.set("verts");
}
protected:
virtual const char* onGetName() { return fName.c_str(); }
virtual void onDraw(SkCanvas* canvas) {
SkPaint paint;
this->setupPaint(&paint);
for (int i = 0; i < N; i++) {
canvas->drawVertices(SkCanvas::kTriangles_VertexMode, PTS,
fPts, NULL, fColors, NULL, fIdx, IDX, paint);
}
}
private:
typedef SkBenchmark INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static SkBenchmark* Fact(void* p) { return SkNEW_ARGS(VertBench, (p)); }
static BenchRegistry gReg(Fact);