File indexing completed on 2024-06-16 04:13:37

 /*
  *  SPDX-FileCopyrightText: 2005 Adrian Page <adrian@pagenet.plus.com>
  *  SPDX-FileCopyrightText: 2008 Bart Coppens <kde@bartcoppens.be>
  *
  *  SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "KoRgbU8ColorSpaceTester.h"
 
 #include "KoColorModelStandardIds.h"
 
 #include <simpletest.h>
 #include <DebugPigment.h>
 #include <string.h>
 
 #include "KoColor.h"
 #include "KoColorSpace.h"
 #include "KoColorSpaceRegistry.h"
 #include "KoCompositeOp.h"
 #include "KoMixColorsOp.h"
 #include <KoCompositeOpRegistry.h>
 #include <kistest.h>
 
 #define NUM_CHANNELS 4
 
 #define RED_CHANNEL 0
 #define GREEN_CHANNEL 1
 #define BLUE_CHANNEL 2
 #define ALPHA_CHANNEL 3
 #include <KoColorProfile.h>
 
 void KoRgbU8ColorSpaceTester::testBasics()
 {
 }
 
 #define PIXEL_RED 0
 #define PIXEL_GREEN 1
 #define PIXEL_BLUE 2
 #define PIXEL_ALPHA 3
 
 void KoRgbU8ColorSpaceTester::testMixColors()
 {
     const KoColorSpace* cs = KoColorSpaceRegistry::instance()->rgb8();
     KoMixColorsOp * mixOp = cs->mixColorsOp();
 
     // Test mixColors.
     quint8 pixel1[4];
     quint8 pixel2[4];
     quint8 outputPixel[4];
 
     pixel1[PIXEL_RED] = 255;
     pixel1[PIXEL_GREEN] = 255;
     pixel1[PIXEL_BLUE] = 255;
     pixel1[PIXEL_ALPHA] = 255;
 
     pixel2[PIXEL_RED] = 0;
     pixel2[PIXEL_GREEN] = 0;
     pixel2[PIXEL_BLUE] = 0;
     pixel2[PIXEL_ALPHA] = 0;
 
     const quint8 *pixelPtrs[2];
     qint16 weights[2];
 
     pixelPtrs[0] = pixel1;
     pixelPtrs[1] = pixel2;
 
     weights[0] = 255;
     weights[1] = 0;
 
     mixOp->mixColors(pixelPtrs, weights, 2, outputPixel);
 
     QVERIFY((int)outputPixel[PIXEL_RED] == 255);
     QVERIFY((int)outputPixel[PIXEL_GREEN] == 255);
     QVERIFY((int)outputPixel[PIXEL_BLUE] == 255);
     QVERIFY((int)outputPixel[PIXEL_ALPHA] == 255);
 
     weights[0] = 0;
     weights[1] = 255;
 
     mixOp->mixColors(pixelPtrs, weights, 2, outputPixel);
 
     QVERIFY((int)outputPixel[PIXEL_RED] == 0);
     QVERIFY((int)outputPixel[PIXEL_GREEN] == 0);
     QVERIFY((int)outputPixel[PIXEL_BLUE] == 0);
     QVERIFY((int)outputPixel[PIXEL_ALPHA] == 0);
 
     weights[0] = 128;
     weights[1] = 127;
 
     mixOp->mixColors(pixelPtrs, weights, 2, outputPixel);
 
     QVERIFY((int)outputPixel[PIXEL_RED] == 255);
     QVERIFY((int)outputPixel[PIXEL_GREEN] == 255);
     QVERIFY((int)outputPixel[PIXEL_BLUE] == 255);
     QVERIFY((int)outputPixel[PIXEL_ALPHA] == 128);
 
     pixel1[PIXEL_RED] = 200;
     pixel1[PIXEL_GREEN] = 100;
     pixel1[PIXEL_BLUE] = 50;
     pixel1[PIXEL_ALPHA] = 255;
 
     pixel2[PIXEL_RED] = 100;
     pixel2[PIXEL_GREEN] = 200;
     pixel2[PIXEL_BLUE] = 20;
     pixel2[PIXEL_ALPHA] = 255;
 
     mixOp->mixColors(pixelPtrs, weights, 2, outputPixel);
 
     QVERIFY((int)outputPixel[PIXEL_RED] == 150);
     QCOMPARE((int)outputPixel[PIXEL_GREEN], 150);
     QVERIFY((int)outputPixel[PIXEL_BLUE] == 35);
     QVERIFY((int)outputPixel[PIXEL_ALPHA] == 255);
 
     pixel1[PIXEL_RED] = 0;
     pixel1[PIXEL_GREEN] = 0;
     pixel1[PIXEL_BLUE] = 0;
     pixel1[PIXEL_ALPHA] = 0;
 
     pixel2[PIXEL_RED] = 255;
     pixel2[PIXEL_GREEN] = 255;
     pixel2[PIXEL_BLUE] = 255;
     pixel2[PIXEL_ALPHA] = 254;
 
     weights[0] = 89;
     weights[1] = 166;
 
     mixOp->mixColors(pixelPtrs, weights, 2, outputPixel);
 
     QVERIFY((int)outputPixel[PIXEL_RED] == 255);
     QVERIFY((int)outputPixel[PIXEL_GREEN] == 255);
     QVERIFY((int)outputPixel[PIXEL_BLUE] == 255);
     QVERIFY((int)outputPixel[PIXEL_ALPHA] == 165);
 }
 void KoRgbU8ColorSpaceTester::testMixColorsAverage()
 {
     const KoColorSpace* cs = KoColorSpaceRegistry::instance()->rgb8();
     KoMixColorsOp * mixOp = cs->mixColorsOp();
 
     // Test mixColors.
     quint8 pixel1[4];
     quint8 pixel2[4];
     quint8 outputPixel[4];
 
     pixel1[PIXEL_RED] = 255;
     pixel1[PIXEL_GREEN] = 255;
     pixel1[PIXEL_BLUE] = 255;
     pixel1[PIXEL_ALPHA] = 255;
 
     pixel2[PIXEL_RED] = 0;
     pixel2[PIXEL_GREEN] = 0;
     pixel2[PIXEL_BLUE] = 0;
     pixel2[PIXEL_ALPHA] = 0;
 
     const quint8 *pixelPtrs[2];
 
     pixelPtrs[0] = pixel1;
     pixelPtrs[1] = pixel2;
 
     mixOp->mixColors(pixelPtrs, 2, outputPixel);
 
     QCOMPARE((int)outputPixel[PIXEL_RED], 255);
     QCOMPARE((int)outputPixel[PIXEL_GREEN], 255);
     QCOMPARE((int)outputPixel[PIXEL_BLUE], 255);
     QCOMPARE((int)outputPixel[PIXEL_ALPHA], 128);
 
     pixel2[PIXEL_ALPHA] = 255;
     mixOp->mixColors(pixelPtrs, 2, outputPixel);
 
     QCOMPARE((int)outputPixel[PIXEL_RED], 128);
     QCOMPARE((int)outputPixel[PIXEL_GREEN], 128);
     QCOMPARE((int)outputPixel[PIXEL_BLUE], 128);
     QCOMPARE((int)outputPixel[PIXEL_ALPHA], 255);
 }
 
 void KoRgbU8ColorSpaceTester::testCompositeOps()
 {
     // Just COMPOSITE_COPY for now
 
     QList<KoID> depthIDs = KoColorSpaceRegistry::instance()->colorDepthList(RGBAColorModelID.id(),
                            KoColorSpaceRegistry::AllColorSpaces);
 
     Q_FOREACH (const KoID& depthId, depthIDs) {
 
         if (depthId.id().contains("Float")) continue;
 
         qDebug() << depthId.id();
         const KoColorSpace* cs = KoColorSpaceRegistry::instance()->colorSpace(
                                      RGBAColorModelID.id(), depthId.id(), "");
         
         const KoCompositeOp* copyOp = cs->compositeOp(COMPOSITE_COPY);
         KoColor src(cs), dst(cs);
 
         QColor red(255, 0, 0);
         QColor blue(0, 0, 255);
         QColor transparentRed(255, 0, 0, 0);
 
         // Copying a color over another color should replace the original color
         src.fromQColor(red);
         dst.fromQColor(blue);
         
         qDebug() << src.toQColor() << dst.toQColor();
 
         QVERIFY(memcmp(dst.data(), src.data(), cs->pixelSize()) != 0);
 
         copyOp->composite(dst.data(), cs->pixelSize(), src.data(), cs->pixelSize(),
                           0, 0, 1, 1, OPACITY_OPAQUE_U8);
 
         src.fromQColor(red);
         QVERIFY(memcmp(dst.data(), src.data(), cs->pixelSize()) == 0);
 
         // Copying something transparent over something non-transparent should, of course, make the dst transparent
         src.fromQColor(transparentRed);
         dst.fromQColor(blue);
 
         QVERIFY(memcmp(dst.data(), src.data(), cs->pixelSize()) != 0);
 
         copyOp->composite(dst.data(), cs->pixelSize(), src.data(), cs->pixelSize(),
                           0, 0, 1, 1, OPACITY_OPAQUE_U8);
 
         src.fromQColor(transparentRed);
         QVERIFY(memcmp(dst.data(), src.data(), cs->pixelSize()) == 0);
 
         // Copying something solid over something transparent
         src.fromQColor(blue);
         dst.fromQColor(transparentRed);
 
         QVERIFY(memcmp(dst.data(), src.data(), cs->pixelSize()) != 0);
 
         copyOp->composite(dst.data(), cs->pixelSize(), src.data(), cs->pixelSize(),
                           0, 0, 1, 1, OPACITY_OPAQUE_U8);
 
         src.fromQColor(blue);
         QVERIFY(memcmp(dst.data(), src.data(), cs->pixelSize()) == 0);
 
     }
 }
 
 void KoRgbU8ColorSpaceTester::testCompositeOpsWithChannelFlags()
 {
     const KoColorSpace* cs = KoColorSpaceRegistry::instance()->rgb8();
     QList<KoCompositeOp*> ops = cs->compositeOps();
 
     Q_FOREACH (const KoCompositeOp *op, ops) {
         /**
          * ALPHA_DARKEN composite op doesn't take channel
          * flags into account, so just skip it
          */
         if (op->id() == COMPOSITE_ALPHA_DARKEN) continue;
         if (op->id() == COMPOSITE_DISSOLVE) continue;
 
         quint8 src[] = {128,128,128,129};
         quint8 goodDst[] = {10,10,10,11};
         quint8 badDst[] = {12,12,12,0};
 
         KoCompositeOp::ParameterInfo params;
         params.maskRowStart  = 0;
         params.dstRowStride  = 0;
         params.srcRowStride  = 0;
         params.maskRowStride = 0;
         params.rows          = 1;
         params.cols          = 1;
         params.opacity       = 1.0f;
         params.flow          = 1.0f;
 
         QBitArray channelFlags(4, true);
         channelFlags[2] = false;
         params.channelFlags  = channelFlags;
 
         params.srcRowStart   = src;
 
         params.dstRowStart   = goodDst;
         op->composite(params);
 
         params.dstRowStart   = badDst;
         op->composite(params);
 
         /**
          * The badDst has zero alpha, so the channels should be zeroed
          * before increasing alpha of the pixel
          */
         if (badDst[3] != 0 && badDst[2] != 0) {
             qDebug() << op->id()
                      << "easy case:" << goodDst[2]
                      << "difficult case:" << badDst[2];
 
             qDebug() << "The composite op has failed to erase the color "
                 "channel which was hidden by zero alpha.";
             qDebug() << "Expected Blue channel:" << 0;
             qDebug() << "Actual Blue channel:  " << badDst[2];
 
             QFAIL("Failed to erase color channel");
         }
     }
 }
 
 // for posix_memalign()
 #include <stdlib.h>
 #include <config-xsimd.h>
 
 #if defined Q_OS_WIN
 #define MEMALIGN_ALLOC(p, a, s) ((*(p)) = _aligned_malloc((s), (a)), *(p) ? 0 : errno)
 #define MEMALIGN_FREE(p) _aligned_free((p))
 #else
 #define MEMALIGN_ALLOC(p, a, s) posix_memalign((p), (a), (s))
 #define MEMALIGN_FREE(p) free((p))
 #endif
 
 void KoRgbU8ColorSpaceTester::testCompositeCopyDivisionByZero()
 {
     const KoColorSpace* cs = KoColorSpaceRegistry::instance()->rgb8();
     const KoCompositeOp *op = cs->compositeOp(COMPOSITE_COPY);
 
     const int pixelAlignment = sizeof(float) * 16; // 512-bit alignment should be enough for everyone! (c)
     const int numPixels = 256;
     void *src = 0;
     void *dst = 0;
 
     int result = 0;
 
     result = MEMALIGN_ALLOC(&src, pixelAlignment, cs->pixelSize() * numPixels);
     KIS_ASSERT(!result);
 
     result = MEMALIGN_ALLOC(&dst, pixelAlignment, cs->pixelSize() * numPixels);
     KIS_ASSERT(!result);
 
     // generate buffers in misaligned manner
     int numTestablePixels = numPixels - 1;
     quint8 * srcPtr = reinterpret_cast<quint8*>(src) + cs->pixelSize();
     quint8 * dstPtr = reinterpret_cast<quint8*>(dst) + cs->pixelSize();
 
 
     auto testBadPixel = [cs, op, srcPtr, dstPtr, numTestablePixels] (int badPixelPos,
             const quint8 *goodSrc,
             const quint8 *goodDst,
             const quint8 *badSrc,
             const quint8 *badDst,
             quint8 opacity,
             quint8 *expectedDst) {
 
         quint8 *badPixelDstPtr = dstPtr + badPixelPos * cs->pixelSize();
 
         for (int i = 0; i < numTestablePixels; i++) {
             if (i != badPixelPos) {
                 memcpy(srcPtr + cs->pixelSize() * i, goodSrc, cs->pixelSize());
                 memcpy(dstPtr + cs->pixelSize() * i, goodDst, cs->pixelSize());
             } else {
                 memcpy(srcPtr + cs->pixelSize() * i, badSrc, cs->pixelSize());
                 memcpy(dstPtr + cs->pixelSize() * i, badDst, cs->pixelSize());
             }
         }
 
         op->composite(dstPtr, numTestablePixels * cs->pixelSize(),
                       srcPtr, numTestablePixels * cs->pixelSize(),
                       0, 0,
                       1, numTestablePixels, opacity);
 
         if (memcmp(badPixelDstPtr, expectedDst, cs->pixelSize()) != 0) {
             qDebug() << "badPixelPos" << badPixelPos;
             qDebug() << "opacity" << opacity;
             qDebug() << "oriS" << badSrc[0] << badSrc[1] << badSrc[2] << badSrc[3];
             qDebug() << "oriD" << badDst[0] << badDst[1] << badDst[2] << badDst[3];
             qDebug() << "expD" << expectedDst[0] << expectedDst[1] << expectedDst[2] << expectedDst[3];
             qDebug() << "dst1" << badPixelDstPtr[0] << badPixelDstPtr[1] << badPixelDstPtr[2] << badPixelDstPtr[3];
 #if defined HAVE_XSIMD && !defined(XSIMD_NO_SUPPORTED_ARCHITECTURE)
             QFAIL("Failed to compose pixels");
 #else
             qWarning() << "Skipping failed test when xsimd library is not used";
 #endif
         }
     };
 
     /**
      * This test is supposed to catch irregularities between vector and scalar versions
      * of the composite op. In vector version we handle division be zero in a relaxed
      * way, so it some cases the content of the color channels may be different from
      * the one of the scalar versions of the algorithm. It is only allowed when the
      * pixel's alpha is null. In such case Krita considers pixel state as "undefined",
      * so any value is considered okay.
      */
 
     {
         quint8 goodSrc[] = {128,128,128,129};
         quint8 goodDst[] = {10,10,10,11};
         quint8 badSrc[] = {128,128,128,129};
         quint8 badDst[] = {12,12,12,0};
         quint8 *expectedDst = badSrc;
         testBadPixel(1, goodSrc, goodDst, badSrc, badDst, 255, expectedDst);
     }
 
     {
         quint8 goodSrc[] = {128,128,128,129};
         quint8 goodDst[] = {10,10,10,11};
         quint8 badSrc[] = {128,128,128,129};
         quint8 badDst[] = {12,12,12,0};
         quint8 *expectedDst = badSrc;
         testBadPixel(10, goodSrc, goodDst, badSrc, badDst, 255, expectedDst);
     }
 
 
     {
         quint8 goodSrc[] = {128,128,128,129};
         quint8 goodDst[] = {10,10,10,11};
         quint8 badSrc[] = {128,128,128,129};
         quint8 badDst[] = {12,12,12,0};
         quint8 expectedDst[] = {128,128,128,65};
         testBadPixel(1, goodSrc, goodDst, badSrc, badDst, 128, expectedDst);
     }
 
     {
         quint8 goodSrc[] = {128,128,128,129};
         quint8 goodDst[] = {10,10,10,11};
         quint8 badSrc[] = {128,128,128,129};
         quint8 badDst[] = {12,12,12,0};
         quint8 expectedDst[] = {128,128,128,65};
         testBadPixel(10, goodSrc, goodDst, badSrc, badDst, 128, expectedDst);
     }
 
     {
         quint8 goodSrc[] = {128,128,128,129};
         quint8 goodDst[] = {10,10,10,11};
         quint8 badSrc[] = {128,128,128,0};
         quint8 badDst[] = {12,12,12,0};
         quint8 expectedDst[] = {0,0,0,0}; // NOTE: the pixel has been changed, even though visually it hasn't (due to zero alpha)
         testBadPixel(1, goodSrc, goodDst, badSrc, badDst, 128, expectedDst);
     }
 
     {
         quint8 goodSrc[] = {128,128,128,129};
         quint8 goodDst[] = {10,10,10,11};
         quint8 badSrc[] = {128,128,128,0};
         quint8 badDst[] = {12,12,12,0};
         quint8 expectedDst[] = {255,255,255,0}; // NOTE: the result is different from the scalar version, but we don't care, since alpha is still zero
         testBadPixel(10, goodSrc, goodDst, badSrc, badDst, 128, expectedDst);
     }
 
     {
         quint8 goodSrc[] = {128,128,128,129};
         quint8 goodDst[] = {10,10,10,11};
         quint8 badSrc[] = {128,128,128,0};
         quint8 badDst[] = {12,12,12,127};
         quint8 expectedDst[] = {12,12,12,63};
         testBadPixel(1, goodSrc, goodDst, badSrc, badDst, 128, expectedDst);
     }
 
     {
         quint8 goodSrc[] = {128,128,128,129};
         quint8 goodDst[] = {10,10,10,11};
         quint8 badSrc[] = {128,128,128,0};
         quint8 badDst[] = {12,12,12,127};
         quint8 expectedDst[] = {12,12,12,63};
         testBadPixel(10, goodSrc, goodDst, badSrc, badDst, 128, expectedDst);
     }
 }
 
 KISTEST_MAIN(KoRgbU8ColorSpaceTester)