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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include <string>
#include <tuple>
#include <vector>
#include "Resources.h"
#include "SkCpu.h"
#include "SkImage.h"
#include "SkImage_Base.h"
#include "SkOpts.h"
#include "SkPM4fPriv.h"
#include "SkNx.h"
#include "Test.h"
typedef void (*Blender)(uint32_t* dst, const uint32_t* const srcStart, int ndst, const int nsrc);
static inline void srcover_srgb_srgb_1(uint32_t* dst, uint32_t src) {
auto d = Sk4f_fromS32(*dst),
s = Sk4f_fromS32( src);
*dst = Sk4f_toS32(s + d * (1.0f - s[3]));
}
static void brute_force_srcover_srgb_srgb(
uint32_t* dst, const uint32_t* const src, int ndst, const int nsrc) {
while (ndst > 0) {
int n = SkTMin(ndst, nsrc);
for (int i = 0; i < n; i++) {
srcover_srgb_srgb_1(dst++, src[i]);
}
ndst -= n;
}
}
static SkString mismatch_message(std::string resourceName, int x, int y,
uint32_t src, uint32_t good, uint32_t bad) {
return SkStringPrintf(
"%s - missmatch at %d, %d src: %08x good: %08x bad: %08x",
resourceName.c_str(), x, y, src, good, bad);
}
static void test_blender(std::string resourceName, skiatest::Reporter* reporter) {
std::string fileName = resourceName + ".png";
sk_sp<SkImage> image = GetResourceAsImage(fileName.c_str());
if (image == nullptr) {
ERRORF(reporter, "image is NULL");
return;
}
SkBitmap bm;
sk_sp<SkColorSpace> srgbColorSpace = SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named);
if (!as_IB(image)->getROPixels(&bm, srgbColorSpace.get())) {
ERRORF(reporter, "Could not read resource");
return;
}
SkPixmap pixmap;
bm.peekPixels(&pixmap);
SkASSERTF(pixmap.colorType() == kN32_SkColorType, "colorType: %d", pixmap.colorType());
SkASSERT(pixmap.alphaType() != kUnpremul_SkAlphaType);
const uint32_t* src = pixmap.addr32();
const int width = pixmap.rowBytesAsPixels();
SkASSERT(width > 0);
SkASSERT(width < 4000);
SkAutoTArray<uint32_t> correctDst(width);
SkAutoTArray<uint32_t> testDst(width);
for (int y = 0; y < pixmap.height(); y++) {
// TODO: zero is not the most interesting dst to test srcover...
sk_bzero(correctDst.get(), width * sizeof(uint32_t));
sk_bzero(testDst.get(), width * sizeof(uint32_t));
brute_force_srcover_srgb_srgb(correctDst.get(), src, width, width);
SkOpts:: srcover_srgb_srgb( testDst.get(), src, width, width);
for (int x = 0; x < width; x++) {
REPORTER_ASSERT_MESSAGE(
reporter, correctDst[x] == testDst[x],
mismatch_message(resourceName, x, y, src[x], correctDst[x], testDst[x]));
if (correctDst[x] != testDst[x]) break;
}
src += width;
}
}
DEF_TEST(SkBlend_optsCheck, reporter) {
std::vector<std::string> testResources = {
"yellow_rose", "baby_tux", "plane", "mandrill_512", "iconstrip"
};
for (auto& resourceName : testResources) {
test_blender(resourceName, reporter);
}
}
DEF_TEST(SkBlend_optsSqrtCheck, reporter) {
for (int c = 0; c < 256; c++) {
Sk4f i{(float)c};
Sk4f ii = i * i;
Sk4f s = ii.sqrt() + 0.5f;
Sk4f sf = s.floor();
REPORTER_ASSERT_MESSAGE(
reporter, i[0] == sf[0], SkStringPrintf("i: %f, s: %f", i[0], sf[0]));
}
}
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