SkLinearBitmapPipelineTest.cpp revision 3eb4895ea1205a5a2dd1457bf67a1497a29ebc81 
1/*
2 * Copyright 2016 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 "SkLinearBitmapPipeline.h"
9#include "SkColor.h"
10#include "SkPM4f.h"
11#include "Test.h"
12
13struct SinkBilerpProcessor final : public PointProcessorInterface {
14    void pointListFew(int n, Sk4fArg xs, Sk4fArg ys) override { fXs = xs; fYs = ys; }
15    void pointList4(Sk4fArg Xs, Sk4fArg Ys) override { fXs = Xs; fYs = Ys; }
16    void pointSpan(SkPoint start, SkScalar length, int count) override { }
17    Sk4f fXs;
18    Sk4f fYs;
19};
20
21using Pixel = float[4];
22DEF_TEST(SkBitmapFP, reporter) {
23
24    int width = 10;
25    int height = 10;
26    uint32_t* bitmap = new uint32_t[width * height];
27    for (int y = 0; y < height; y++) {
28        for (int x = 0; x < width; x++) {
29            bitmap[y * width + x] = (y << 8) + x + (128<<24);
30        }
31    }
32
33    SkPM4f* FPbuffer = new SkPM4f[width * height];
34
35    SkMatrix m = SkMatrix::I();
36    //m.setRotate(30.0f, 1.0f, 1.0f);
37    SkMatrix invert;
38    bool trash = m.invert(&invert);
39    sk_ignore_unused_variable(trash);
40
41    const SkImageInfo info =
42        SkImageInfo::MakeN32Premul(width, height, kLinear_SkColorProfileType);
43
44    SkPixmap srcPixmap{info, bitmap, static_cast<size_t>(4 * width)};
45
46    SkLinearBitmapPipeline pipeline{invert, kNone_SkFilterQuality, SkShader::kClamp_TileMode,
47                                    SkShader::kClamp_TileMode, srcPixmap};
48
49    int count = 10;
50
51    pipeline.shadeSpan4f(3, 6, FPbuffer, count);
52#if 0
53    Pixel* pixelBuffer = (Pixel*)FPbuffer;
54    for (int i = 0; i < count; i++) {
55        printf("i: %d - (%g, %g, %g, %g)\n", i,
56               pixelBuffer[i][0] * 255.0f,
57               pixelBuffer[i][1] * 255.0f,
58               pixelBuffer[i][2] * 255.0f,
59               pixelBuffer[i][3] * 255.0f);
60    }
61#endif
62
63    delete [] bitmap;
64    delete [] FPbuffer;
65}
66
67