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 <string>
9 #include <tuple>
10 #include <vector>
11 #include "Resources.h"
12 #include "SkCpu.h"
13 #include "SkImage.h"
14 #include "SkImage_Base.h"
15 #include "SkOpts.h"
16 #include "SkPM4fPriv.h"
17 #include "SkNx.h"
18 #include "Test.h"
19
20 typedef void (*Blender)(uint32_t* dst, const uint32_t* const srcStart, int ndst, const int nsrc);
21
srcover_srgb_srgb_1(uint32_t * dst,uint32_t src)22 static inline void srcover_srgb_srgb_1(uint32_t* dst, uint32_t src) {
23 auto d = Sk4f_fromS32(*dst),
24 s = Sk4f_fromS32( src);
25 *dst = Sk4f_toS32(s + d * (1.0f - s[3]));
26 }
27
brute_force_srcover_srgb_srgb(uint32_t * dst,const uint32_t * const src,int ndst,const int nsrc)28 static void brute_force_srcover_srgb_srgb(
29 uint32_t* dst, const uint32_t* const src, int ndst, const int nsrc) {
30 while (ndst > 0) {
31 int n = SkTMin(ndst, nsrc);
32
33 for (int i = 0; i < n; i++) {
34 srcover_srgb_srgb_1(dst++, src[i]);
35 }
36 ndst -= n;
37 }
38 }
39
mismatch_message(std::string resourceName,int x,int y,uint32_t src,uint32_t good,uint32_t bad)40 static SkString mismatch_message(std::string resourceName, int x, int y,
41 uint32_t src, uint32_t good, uint32_t bad) {
42 return SkStringPrintf(
43 "%s - missmatch at %d, %d src: %08x good: %08x bad: %08x",
44 resourceName.c_str(), x, y, src, good, bad);
45 }
46
test_blender(std::string resourceName,skiatest::Reporter * reporter)47 static void test_blender(std::string resourceName, skiatest::Reporter* reporter) {
48 std::string fileName = resourceName + ".png";
49 sk_sp<SkImage> image = GetResourceAsImage(fileName.c_str());
50 if (image == nullptr) {
51 ERRORF(reporter, "image is NULL");
52 return;
53 }
54 SkBitmap bm;
55 sk_sp<SkColorSpace> srgbColorSpace = SkColorSpace::MakeSRGB();
56 if (!as_IB(image)->getROPixels(&bm, srgbColorSpace.get())) {
57 ERRORF(reporter, "Could not read resource");
58 return;
59 }
60
61 SkPixmap pixmap;
62 bm.peekPixels(&pixmap);
63 SkASSERTF(pixmap.colorType() == kN32_SkColorType, "colorType: %d", pixmap.colorType());
64 SkASSERT(pixmap.alphaType() != kUnpremul_SkAlphaType);
65 const uint32_t* src = pixmap.addr32();
66 const int width = pixmap.rowBytesAsPixels();
67 SkASSERT(width > 0);
68 SkASSERT(width < 4000);
69 SkAutoTArray<uint32_t> correctDst(width);
70 SkAutoTArray<uint32_t> testDst(width);
71
72 for (int y = 0; y < pixmap.height(); y++) {
73 // TODO: zero is not the most interesting dst to test srcover...
74 sk_bzero(correctDst.get(), width * sizeof(uint32_t));
75 sk_bzero(testDst.get(), width * sizeof(uint32_t));
76 brute_force_srcover_srgb_srgb(correctDst.get(), src, width, width);
77 SkOpts:: srcover_srgb_srgb( testDst.get(), src, width, width);
78 for (int x = 0; x < width; x++) {
79 REPORTER_ASSERT_MESSAGE(
80 reporter, correctDst[x] == testDst[x],
81 mismatch_message(resourceName, x, y, src[x], correctDst[x], testDst[x]));
82 if (correctDst[x] != testDst[x]) break;
83 }
84 src += width;
85 }
86 }
87
DEF_TEST(SkBlend_optsCheck,reporter)88 DEF_TEST(SkBlend_optsCheck, reporter) {
89 std::vector<std::string> testResources = {
90 "yellow_rose", "baby_tux", "plane", "mandrill_512", "iconstrip"
91 };
92
93 for (auto& resourceName : testResources) {
94 test_blender(resourceName, reporter);
95 }
96 }
97
DEF_TEST(SkBlend_optsSqrtCheck,reporter)98 DEF_TEST(SkBlend_optsSqrtCheck, reporter) {
99 for (int c = 0; c < 256; c++) {
100 Sk4f i{(float)c};
101 Sk4f ii = i * i;
102 Sk4f s = ii.sqrt() + 0.5f;
103 Sk4f sf = s.floor();
104 REPORTER_ASSERT_MESSAGE(
105 reporter, i[0] == sf[0], SkStringPrintf("i: %f, s: %f", i[0], sf[0]));
106 }
107 }
108