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1 /*
2  * Copyright 2011 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #include "SkBenchmark.h"
9 #include "SkCanvas.h"
10 #include "SkPaint.h"
11 #include "SkRandom.h"
12 #include "SkString.h"
13 #include "SkShader.h"
14 
15 enum VertFlags {
16     kColors_VertFlag,
17     kTexture_VertFlag,
18 };
19 
20 class VertBench : public SkBenchmark {
21     SkString fName;
22     enum {
23         W = 640,
24         H = 480,
25         ROW = 20,
26         COL = 20,
27         PTS = (ROW + 1) * (COL + 1),
28         IDX = ROW * COL * 6,
29         N = SkBENCHLOOP(10)
30     };
31 
32     SkPoint fPts[PTS];
33     SkColor fColors[PTS];
34     SkPoint fTex[PTS];
35     uint16_t fIdx[IDX];
36 
load_2_tris(uint16_t idx[],int x,int y,int rb)37     static void load_2_tris(uint16_t idx[], int x, int y, int rb) {
38         int n = y * rb + x;
39         idx[0] = n; idx[1] = n + 1; idx[2] = rb + n + 1;
40         idx[3] = n; idx[4] = rb + n + 1; idx[5] = n + rb;
41     }
42 
43 public:
VertBench(void * param)44     VertBench(void* param) : INHERITED(param) {
45         const SkScalar dx = SkIntToScalar(W) / COL;
46         const SkScalar dy = SkIntToScalar(H) / COL;
47 
48         SkPoint* pts = fPts;
49         uint16_t* idx = fIdx;
50 
51         SkScalar yy = 0;
52         for (int y = 0; y <= ROW; y++) {
53             SkScalar xx = 0;
54             for (int x = 0; x <= COL; ++x) {
55                 pts->set(xx, yy);
56                 pts += 1;
57                 xx += dx;
58 
59                 if (x < COL && y < ROW) {
60                     load_2_tris(idx, x, y, COL + 1);
61                     for (int i = 0; i < 6; i++) {
62                         SkASSERT(idx[i] < PTS);
63                     }
64                     idx += 6;
65                 }
66             }
67             yy += dy;
68         }
69         SkASSERT(PTS == pts - fPts);
70         SkASSERT(IDX == idx - fIdx);
71 
72         SkRandom rand;
73         for (int i = 0; i < PTS; ++i) {
74             fColors[i] = rand.nextU() | (0xFF << 24);
75         }
76 
77         fName.set("verts");
78     }
79 
80 protected:
onGetName()81     virtual const char* onGetName() { return fName.c_str(); }
onDraw(SkCanvas * canvas)82     virtual void onDraw(SkCanvas* canvas) {
83         SkPaint paint;
84         this->setupPaint(&paint);
85 
86         for (int i = 0; i < N; i++) {
87             canvas->drawVertices(SkCanvas::kTriangles_VertexMode, PTS,
88                                  fPts, NULL, fColors, NULL, fIdx, IDX, paint);
89         }
90     }
91 private:
92     typedef SkBenchmark INHERITED;
93 };
94 
95 ///////////////////////////////////////////////////////////////////////////////
96 
Fact(void * p)97 static SkBenchmark* Fact(void* p) { return SkNEW_ARGS(VertBench, (p)); }
98 
99 static BenchRegistry gReg(Fact);
100