#include <KisOpenGLCanvasRenderer.h>

Inheritance diagram for KisOpenGLCanvasRenderer:

Classes
class	CanvasBridge

struct	Private

Public Member Functions
void	channelSelectionChanged (const QBitArray &channelFlags)

void	finishResizingImage (qint32 w, qint32 h)

void	initializeGL ()

	KisOpenGLCanvasRenderer (CanvasBridge *canvasBridge, KisImageWSP image, const KisDisplayConfig &displayConfig, QSharedPointer< KisDisplayFilter > displayFilter)

void	notifyImageColorSpaceChanged (const KoColorSpace *cs)

KisOpenGLImageTexturesSP	openGLImageTextures () const

void	paintCanvasOnly (const QRect &canvasImageDirtyRect, const QRect &viewportUpdateRect=QRect())

void	paintToolOutline (const KisOptimizedBrushOutline &path, const QRect &viewportUpdateRect, const int thickness=1)

void	resizeGL (int width, int height)

void	setDisplayConfig (const KisDisplayConfig &config)

void	setDisplayFilter (QSharedPointer< KisDisplayFilter > displayFilter)

void	setLodResetInProgress (bool value)

void	setWrapAroundViewingMode (bool value)

void	setWrapAroundViewingModeAxis (WrapAroundAxis value)

KisUpdateInfoSP	startUpdateCanvasProjection (const QRect &rc)

QRect	updateCanvasProjection (KisUpdateInfoSP info)

void	updateConfig ()

void	updateCursorColor ()

void	updatePixelGridMode ()

bool	wrapAroundViewingMode () const

WrapAroundAxis	wrapAroundViewingModeAxis () const

	~KisOpenGLCanvasRenderer ()

Private Member Functions
QColor	borderColor () const

KisCanvas2 *	canvas () const

QOpenGLContext *	context () const

KisCoordinatesConverter *	coordinatesConverter () const

qreal	devicePixelRatioF () const

void	drawBackground (const QRect &updateRect)

void	drawCheckers (const QRect &updateRect)

void	drawGrid (const QRect &updateRect)

void	drawImage (const QRect &updateRect)

void	drawImageTiles (int firstCol, int lastCol, int firstRow, int lastRow, qreal scaleX, qreal scaleY, const QPoint &wrapAroundOffset)

void	initializeDisplayShader ()

void	initializeShaders ()

void	renderCanvasGL (const QRect &updateRect)

void	reportFailedShaderCompilation (const QString &context)

void	setDisplayFilterImpl (QSharedPointer< KisDisplayFilter > displayFilter, bool initializing)

QRectF	surfaceToWidget (const QRectF &rc)

QRectF	widgetToSurface (const QRectF &rc)

Private Attributes
Private *const	d

Detailed Description

KisOpenGLCanvasRenderer is the class that shows the actual image using OpenGL

Definition at line 43 of file KisOpenGLCanvasRenderer.h.

Constructor & Destructor Documentation

◆ KisOpenGLCanvasRenderer()

KisOpenGLCanvasRenderer::KisOpenGLCanvasRenderer	(	CanvasBridge *	canvasBridge,
		KisImageWSP	image,
		const KisDisplayConfig &	displayConfig,
		QSharedPointer< KisDisplayFilter >	displayFilter )

Definition at line 142 of file KisOpenGLCanvasRenderer.cpp.

    : d(new Private())
{
    d->canvasBridge = canvasBridge;
 
    const KisDisplayConfig &config = displayConfig;
 
    d->openGLImageTextures =
            KisOpenGLImageTextures::createImageTextures(image,
                                                        config.profile,
                                                        config.intent,
                                                        config.conversionFlags);
 
 
    setDisplayFilterImpl(displayFilter, true);
}

References KisOpenGLCanvasRenderer::Private::canvasBridge, KisDisplayConfig::conversionFlags, KisOpenGLImageTextures::createImageTextures(), d, KisDisplayConfig::intent, KisOpenGLCanvasRenderer::Private::openGLImageTextures, KisDisplayConfig::profile, and setDisplayFilterImpl().

◆ ~KisOpenGLCanvasRenderer()

KisOpenGLCanvasRenderer::~KisOpenGLCanvasRenderer ( )

Definition at line 162 of file KisOpenGLCanvasRenderer.cpp.

{
    delete d;
}

References d.

Member Function Documentation

◆ borderColor()

QColor KisOpenGLCanvasRenderer::borderColor ( ) const

private

Definition at line 187 of file KisOpenGLCanvasRenderer.cpp.

{
    return d->canvasBridge->borderColor();
}

References KisOpenGLCanvasRenderer::CanvasBridge::borderColor(), KisOpenGLCanvasRenderer::Private::canvasBridge, and d.

◆ canvas()

KisCanvas2 * KisOpenGLCanvasRenderer::canvas ( ) const

private

Definition at line 167 of file KisOpenGLCanvasRenderer.cpp.

{
    return d->canvasBridge->canvas();
}

References KisOpenGLCanvasRenderer::CanvasBridge::canvas(), KisOpenGLCanvasRenderer::Private::canvasBridge, and d.

◆ channelSelectionChanged()

void KisOpenGLCanvasRenderer::channelSelectionChanged ( const QBitArray & channelFlags )

Definition at line 1099 of file KisOpenGLCanvasRenderer.cpp.

{
    d->openGLImageTextures->setChannelFlags(channelFlags);
}

References d, KisOpenGLCanvasRenderer::Private::openGLImageTextures, and KisOpenGLImageTextures::setChannelFlags().

◆ context()

QOpenGLContext * KisOpenGLCanvasRenderer::context ( ) const

private

Definition at line 172 of file KisOpenGLCanvasRenderer.cpp.

{
    return d->canvasBridge->openglContext();
}

References KisOpenGLCanvasRenderer::Private::canvasBridge, d, and KisOpenGLCanvasRenderer::CanvasBridge::openglContext().

◆ coordinatesConverter()

KisCoordinatesConverter * KisOpenGLCanvasRenderer::coordinatesConverter ( ) const

private

Definition at line 182 of file KisOpenGLCanvasRenderer.cpp.

{
    return d->canvasBridge->coordinatesConverter();
}

References KisOpenGLCanvasRenderer::Private::canvasBridge, KisOpenGLCanvasRenderer::CanvasBridge::coordinatesConverter(), and d.

◆ devicePixelRatioF()

qreal KisOpenGLCanvasRenderer::devicePixelRatioF ( ) const

private

Definition at line 177 of file KisOpenGLCanvasRenderer.cpp.

{
    return d->canvasBridge->devicePixelRatioF();
}

References KisOpenGLCanvasRenderer::Private::canvasBridge, d, and KisOpenGLCanvasRenderer::CanvasBridge::devicePixelRatioF().

◆ drawBackground()

void KisOpenGLCanvasRenderer::drawBackground ( const QRect & updateRect )

private

Definition at line 583 of file KisOpenGLCanvasRenderer.cpp.

{
    Q_UNUSED(updateRect);
 
    // Draw the border (that is, clear the whole widget to the border color)
    QColor widgetBackgroundColor = borderColor();
 
    const KoColorSpace *finalColorSpace =
            KoColorSpaceRegistry::instance()->colorSpace(RGBAColorModelID.id(),
                                                         d->openGLImageTextures->updateInfoBuilder().destinationColorSpace()->colorDepthId().id(),
                                                         d->openGLImageTextures->monitorProfile());
 
    KoColor convertedBackgroundColor = KoColor(widgetBackgroundColor, KoColorSpaceRegistry::instance()->rgb8());
    convertedBackgroundColor.convertTo(finalColorSpace);
 
    QVector<float> channels = QVector<float>(4);
    convertedBackgroundColor.colorSpace()->normalisedChannelsValue(convertedBackgroundColor.data(), channels);
 
 
    // Data returned by KoRgbU8ColorSpace comes in the order: blue, green, red.
    glClearColor(channels[2], channels[1], channels[0], 1.0);
    glClear(GL_COLOR_BUFFER_BIT);
}

References borderColor(), KoColorSpace::colorDepthId(), KoColor::colorSpace(), KoColorSpaceRegistry::colorSpace(), KoColor::convertTo(), d, KoColor::data(), KisOpenGLUpdateInfoBuilder::destinationColorSpace(), KoID::id(), KoColorSpaceRegistry::instance(), KisOpenGLImageTextures::monitorProfile(), KoColorSpace::normalisedChannelsValue(), KisOpenGLCanvasRenderer::Private::openGLImageTextures, RGBAColorModelID, and KisOpenGLImageTextures::updateInfoBuilder().

◆ drawCheckers()

void KisOpenGLCanvasRenderer::drawCheckers ( const QRect & updateRect )

private

Definition at line 607 of file KisOpenGLCanvasRenderer.cpp.

{
    Q_UNUSED(updateRect);
 
    if (!d->checkerShader) {
        return;
    }
 
    KisCoordinatesConverter *converter = coordinatesConverter();
    QTransform textureTransform;
    QTransform modelTransform;
    QRectF textureRect;
    QRectF modelRect;
 
    const QSizeF &widgetSize = d->pixelAlignedWidgetSize;
    QRectF viewportRect;
    if (!d->wrapAroundMode) {
        viewportRect = converter->imageRectInViewportPixels();
    }
    else {
        const QRectF ir = converter->imageRectInViewportPixels();
        viewportRect = converter->widgetToViewport(QRectF(0, 0, widgetSize.width(), widgetSize.height()));
        if (d->wrapAroundModeAxis == WRAPAROUND_HORIZONTAL) {
            viewportRect.setTop(ir.top());
            viewportRect.setBottom(ir.bottom());
        }
        else if (d->wrapAroundModeAxis == WRAPAROUND_VERTICAL) {
            viewportRect.setLeft(ir.left());
            viewportRect.setRight(ir.right());
        }
    }
 
    // TODO: check if it works correctly
    if (!canvas()->renderingLimit().isEmpty()) {
        const QRect vrect = converter->imageToViewport(canvas()->renderingLimit()).toAlignedRect();
        viewportRect &= vrect;
    }
 
    converter->getOpenGLCheckersInfo(viewportRect,
                                     &textureTransform, &modelTransform, &textureRect, &modelRect, d->scrollCheckers);
 
    textureTransform *= QTransform::fromScale(d->checkSizeScale / KisOpenGLImageTextures::BACKGROUND_TEXTURE_SIZE,
                                              d->checkSizeScale / KisOpenGLImageTextures::BACKGROUND_TEXTURE_SIZE);
 
    if (!d->checkerShader->bind()) {
        qWarning() << "Could not bind checker shader";
        return;
    }
 
    QMatrix4x4 projectionMatrix;
    projectionMatrix.setToIdentity();
    // FIXME: It may be better to have the projection in device pixel, but
    //       this requires introducing a new coordinate system.
    projectionMatrix.ortho(0, widgetSize.width(), widgetSize.height(), 0, NEAR_VAL, FAR_VAL);
 
    // Set view/projection matrices
    QMatrix4x4 modelMatrix(modelTransform);
    modelMatrix.optimize();
    modelMatrix = projectionMatrix * modelMatrix;
    d->checkerShader->setUniformValue(d->checkerShader->location(Uniform::ModelViewProjection), modelMatrix);
 
    QMatrix4x4 textureMatrix(textureTransform);
    d->checkerShader->setUniformValue(d->checkerShader->location(Uniform::TextureMatrix), textureMatrix);
 
    //Setup the geometry for rendering
    if (KisOpenGL::supportsVAO()) {
        KisPaintingTweaks::rectToVertices(d->vertices, modelRect);
        QOpenGLBuffer *vertexBuf = d->checkersVertexBuffer.getNextBuffer();
 
        vertexBuf->bind();
        vertexBuf->write(0, d->vertices, 3 * 6 * sizeof(float));
        glVertexAttribPointer(PROGRAM_VERTEX_ATTRIBUTE, 3, GL_FLOAT, GL_FALSE, 0, 0);
 
 
        KisPaintingTweaks::rectToTexCoords(d->texCoords, textureRect);
        QOpenGLBuffer *vertexTextureBuf = d->checkersTextureVertexBuffer.getNextBuffer();
 
        vertexTextureBuf->bind();
        vertexTextureBuf->write(0, d->texCoords, 2 * 6 * sizeof(float));
        glVertexAttribPointer(PROGRAM_TEXCOORD_ATTRIBUTE, 2, GL_FLOAT, GL_FALSE, 0, 0);
    }
    else {
        KisPaintingTweaks::rectToVertices(d->vertices, modelRect);
        d->checkerShader->enableAttributeArray(PROGRAM_VERTEX_ATTRIBUTE);
        d->checkerShader->setAttributeArray(PROGRAM_VERTEX_ATTRIBUTE, d->vertices);
 
        KisPaintingTweaks::rectToTexCoords(d->texCoords, textureRect);
        d->checkerShader->enableAttributeArray(PROGRAM_TEXCOORD_ATTRIBUTE);
        d->checkerShader->setAttributeArray(PROGRAM_TEXCOORD_ATTRIBUTE, d->texCoords);
    }
 
    // render checkers
    glActiveTexture(GL_TEXTURE0);
    glBindTexture(GL_TEXTURE_2D, d->openGLImageTextures->checkerTexture());
 
    glDrawArrays(GL_TRIANGLES, 0, 6);
 
    glBindTexture(GL_TEXTURE_2D, 0);
    d->checkerShader->release();
    glBindBuffer(GL_ARRAY_BUFFER, 0);
}

◆ drawGrid()

void KisOpenGLCanvasRenderer::drawGrid ( const QRect & updateRect )

private

Definition at line 709 of file KisOpenGLCanvasRenderer.cpp.

{
    if (!d->solidColorShader->bind()) {
        return;
    }
 
    const QSizeF &widgetSize = d->pixelAlignedWidgetSize;
 
    QMatrix4x4 projectionMatrix;
    projectionMatrix.setToIdentity();
    // FIXME: It may be better to have the projection in device pixel, but
    //       this requires introducing a new coordinate system.
    projectionMatrix.ortho(0, widgetSize.width(), widgetSize.height(), 0, NEAR_VAL, FAR_VAL);
 
    // Set view/projection matrices
    QMatrix4x4 modelMatrix(coordinatesConverter()->imageToWidgetTransform());
    modelMatrix.optimize();
    modelMatrix = projectionMatrix * modelMatrix;
    d->solidColorShader->setUniformValue(d->solidColorShader->location(Uniform::ModelViewProjection), modelMatrix);
 
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
    d->solidColorShader->setUniformValue(
                d->solidColorShader->location(Uniform::FragmentColor),
                QVector4D(d->gridColor.redF(), d->gridColor.greenF(), d->gridColor.blueF(), 0.5f));
 
    QRectF widgetRect(0,0, widgetSize.width(), widgetSize.height());
    QRectF widgetRectInImagePixels = coordinatesConverter()->documentToImage(coordinatesConverter()->widgetToDocument(widgetRect));
    QRect wr = widgetRectInImagePixels.toAlignedRect();
 
    if (!d->wrapAroundMode) {
        wr &= d->openGLImageTextures->storedImageBounds();
    }
 
    if (!updateRect.isEmpty()) {
        const QRect updateRectInImagePixels = coordinatesConverter()->widgetToImage(updateRect).toAlignedRect();
        wr &= updateRectInImagePixels;
    }
 
    QPoint topLeftCorner = wr.topLeft();
    QPoint bottomRightCorner = wr.bottomRight() + QPoint(1, 1);
    QVector<QVector3D> grid;
 
    for (int i = topLeftCorner.x(); i <= bottomRightCorner.x(); ++i) {
        grid.append(QVector3D(i, topLeftCorner.y(), 0));
        grid.append(QVector3D(i, bottomRightCorner.y(), 0));
    }
    for (int i = topLeftCorner.y(); i <= bottomRightCorner.y(); ++i) {
        grid.append(QVector3D(topLeftCorner.x(), i, 0));
        grid.append(QVector3D(bottomRightCorner.x(), i, 0));
    }
 
    if (KisOpenGL::supportsVAO()) {
        d->outlineVAO.bind();
        d->lineVertexBuffer.bind();
        d->lineVertexBuffer.allocate(grid.constData(), 3 * grid.size() * sizeof(float));
    }
    else {
        d->solidColorShader->enableAttributeArray(PROGRAM_VERTEX_ATTRIBUTE);
        d->solidColorShader->setAttributeArray(PROGRAM_VERTEX_ATTRIBUTE, grid.constData());
    }
 
    glDrawArrays(GL_LINES, 0, grid.size());
 
    if (KisOpenGL::supportsVAO()) {
        d->lineVertexBuffer.release();
        d->outlineVAO.release();
    }
 
    d->solidColorShader->release();
    glDisable(GL_BLEND);
}

References coordinatesConverter(), d, KisCoordinatesConverter::documentToImage(), FAR_VAL, FragmentColor, KisOpenGLCanvasRenderer::Private::gridColor, KisOpenGLCanvasRenderer::Private::lineVertexBuffer, KisShaderProgram::location(), ModelViewProjection, NEAR_VAL, KisOpenGLCanvasRenderer::Private::openGLImageTextures, KisOpenGLCanvasRenderer::Private::outlineVAO, KisOpenGLCanvasRenderer::Private::pixelAlignedWidgetSize, PROGRAM_VERTEX_ATTRIBUTE, KisOpenGLCanvasRenderer::Private::solidColorShader, KisOpenGLImageTextures::storedImageBounds(), KisOpenGL::supportsVAO(), KisCoordinatesConverter::widgetToImage(), and KisOpenGLCanvasRenderer::Private::wrapAroundMode.

◆ drawImage()

void KisOpenGLCanvasRenderer::drawImage ( const QRect & updateRect )

private

Definition at line 783 of file KisOpenGLCanvasRenderer.cpp.

{
    if (!d->displayShader) {
        return;
    }
 
    glEnable(GL_BLEND);
    glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
    KisCoordinatesConverter *converter = coordinatesConverter();
 
    d->displayShader->bind();
 
    const QSizeF &widgetSize = d->pixelAlignedWidgetSize;
 
    QMatrix4x4 textureMatrix;
    textureMatrix.setToIdentity();
    d->displayShader->setUniformValue(d->displayShader->location(Uniform::TextureMatrix), textureMatrix);
 
    QRectF widgetRect(0,0, widgetSize.width(), widgetSize.height());
 
    if (!updateRect.isEmpty()) {
        widgetRect &= updateRect;
    }
 
    QRectF widgetRectInImagePixels = converter->documentToImage(converter->widgetToDocument(widgetRect));
 
    const QRect renderingLimit = canvas()->renderingLimit();
 
    if (!renderingLimit.isEmpty()) {
        widgetRectInImagePixels &= renderingLimit;
    }
 
    qreal scaleX, scaleY;
    converter->imagePhysicalScale(&scaleX, &scaleY);
 
    d->displayShader->setUniformValue(d->displayShader->location(Uniform::ViewportScale), (GLfloat) scaleX);
    d->displayShader->setUniformValue(d->displayShader->location(Uniform::TexelSize), (GLfloat) d->openGLImageTextures->texelSize());
 
    QRect ir = d->openGLImageTextures->storedImageBounds();
    QRect wr = widgetRectInImagePixels.toAlignedRect();
 
    if (!d->wrapAroundMode) {
        // if we don't want to paint wrapping images, just limit the
        // processing area, and the code will handle all the rest
        wr &= ir;
    }
    else if (d->wrapAroundModeAxis == WRAPAROUND_HORIZONTAL) {
        wr.setTop(ir.top());
        wr.setBottom(ir.bottom());
    }
    else if (d->wrapAroundModeAxis == WRAPAROUND_VERTICAL) {
        wr.setLeft(ir.left());
        wr.setRight(ir.right());
    }
 
    const int firstColumn = d->xToColWithWrapCompensation(wr.left(), ir);
    const int lastColumn = d->xToColWithWrapCompensation(wr.right(), ir);
    const int firstRow = d->yToRowWithWrapCompensation(wr.top(), ir);
    const int lastRow = d->yToRowWithWrapCompensation(wr.bottom(), ir);
 
    const int minColumn = d->openGLImageTextures->xToCol(ir.left());
    const int maxColumn = d->openGLImageTextures->xToCol(ir.right());
    const int minRow = d->openGLImageTextures->yToRow(ir.top());
    const int maxRow = d->openGLImageTextures->yToRow(ir.bottom());
 
    const int imageColumns = maxColumn - minColumn + 1;
    const int imageRows = maxRow - minRow + 1;
 
    if (d->displayFilter) {
        d->displayFilter->setupTextures(this, d->displayShader);
    }
 
    const int firstCloneX = qFloor(qreal(firstColumn) / imageColumns);
    const int lastCloneX = qFloor(qreal(lastColumn) / imageColumns);
    const int firstCloneY = qFloor(qreal(firstRow) / imageRows);
    const int lastCloneY = qFloor(qreal(lastRow) / imageRows);
 
    for (int cloneY = firstCloneY; cloneY <= lastCloneY; cloneY++) {
        for (int cloneX = firstCloneX; cloneX <= lastCloneX; cloneX++) {
 
            const int localFirstCol = cloneX == firstCloneX ? KisAlgebra2D::wrapValue(firstColumn, imageColumns) : 0;
            const int localLastCol = cloneX == lastCloneX ? KisAlgebra2D::wrapValue(lastColumn, imageColumns) : imageColumns - 1;
 
            const int localFirstRow = cloneY == firstCloneY ? KisAlgebra2D::wrapValue(firstRow, imageRows) : 0;
            const int localLastRow = cloneY == lastCloneY ? KisAlgebra2D::wrapValue(lastRow, imageRows) : imageRows - 1;
 
            drawImageTiles(localFirstCol, localLastCol,
                           localFirstRow, localLastRow,
                           scaleX, scaleY, QPoint(cloneX, cloneY));
        }
    }
 
    d->displayShader->release();
 
    glDisable(GL_BLEND);
}

◆ drawImageTiles()

void KisOpenGLCanvasRenderer::drawImageTiles	(	int	firstCol,
		int	lastCol,
		int	firstRow,
		int	lastRow,
		qreal	scaleX,
		qreal	scaleY,
		const QPoint &	wrapAroundOffset )

private

Definition at line 881 of file KisOpenGLCanvasRenderer.cpp.

{
    KisCoordinatesConverter *converter = coordinatesConverter();
    const QSizeF &widgetSize = d->pixelAlignedWidgetSize;
 
    QMatrix4x4 projectionMatrix;
    projectionMatrix.setToIdentity();
    // FIXME: It may be better to have the projection in device pixel, but
    //       this requires introducing a new coordinate system.
    projectionMatrix.ortho(0, widgetSize.width(), widgetSize.height(), 0, NEAR_VAL, FAR_VAL);
 
    QTransform modelTransform = converter->imageToWidgetTransform();
 
    if (!wrapAroundOffset.isNull()) {
        const QRect ir = d->openGLImageTextures->storedImageBounds();
 
        const QTransform wrapAroundTranslate = QTransform::fromTranslate(ir.width() * wrapAroundOffset.x(),
                                                                   ir.height() * wrapAroundOffset.y());
        modelTransform = wrapAroundTranslate * modelTransform;
    }
 
    // Set view/projection matrices
    QMatrix4x4 modelMatrix(modelTransform);
    modelMatrix.optimize();
    modelMatrix = projectionMatrix * modelMatrix;
    d->displayShader->setUniformValue(d->displayShader->location(Uniform::ModelViewProjection), modelMatrix);
 
    int lastTileLodPlane = -1;
 
    for (int col = firstCol; col <= lastCol; col++) {
        for (int row = firstRow; row <= lastRow; row++) {
 
            KisTextureTile *tile =
                    d->openGLImageTextures->getTextureTileCR(col, row);
 
            if (!tile) {
                warnUI << "OpenGL: Trying to paint texture tile but it has not been created yet.";
                continue;
            }
 
            //Setup the geometry for rendering
            if (KisOpenGL::supportsVAO()) {
                const int tileIndex = d->openGLImageTextures->getTextureBufferIndexCR(col, row);
 
                const int vertexRectSize = 6 * 3 * sizeof(float);
                d->openGLImageTextures->tileVertexBuffer()->bind();
                glVertexAttribPointer(PROGRAM_VERTEX_ATTRIBUTE, 3, GL_FLOAT, GL_FALSE, 0, reinterpret_cast<void*>(tileIndex * vertexRectSize));
 
                const int textureRectSize = 6 * 2 * sizeof(float);
                d->openGLImageTextures->tileTexCoordBuffer()->bind();
                glVertexAttribPointer(PROGRAM_TEXCOORD_ATTRIBUTE, 2, GL_FLOAT, GL_FALSE, 0, reinterpret_cast<void*>(tileIndex * textureRectSize));
 
            } else {
 
                const QRectF textureRect = tile->tileRectInTexturePixels();
                const QRectF modelRect = tile->tileRectInImagePixels();
 
                KisPaintingTweaks::rectToVertices(d->vertices, modelRect);
                d->checkerShader->enableAttributeArray(PROGRAM_VERTEX_ATTRIBUTE);
                d->checkerShader->setAttributeArray(PROGRAM_VERTEX_ATTRIBUTE, d->vertices);
 
                KisPaintingTweaks::rectToTexCoords(d->texCoords, textureRect);
                d->checkerShader->enableAttributeArray(PROGRAM_TEXCOORD_ATTRIBUTE);
                d->checkerShader->setAttributeArray(PROGRAM_TEXCOORD_ATTRIBUTE, d->texCoords);
            }
 
            glActiveTexture(GL_TEXTURE0);
 
            // switching uniform is a rather expensive operation on macOS, so we change it only
            // when it is really needed
            const int currentLodPlane = tile->bindToActiveTexture(d->lodSwitchInProgress);
            if (d->displayShader->location(Uniform::FixedLodLevel) >= 0 &&
                (lastTileLodPlane < 0 || lastTileLodPlane != currentLodPlane)) {
 
                d->displayShader->setUniformValue(d->displayShader->location(Uniform::FixedLodLevel),
                                                  (GLfloat) currentLodPlane);
                lastTileLodPlane = currentLodPlane;
            }
 
            if (currentLodPlane > 0) {
                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
            } else if (SCALE_MORE_OR_EQUAL_TO(scaleX, scaleY, 2.0)) {
                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
            } else {
                glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 
                switch(d->filterMode) {
                case KisOpenGL::NearestFilterMode:
                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
                    break;
                case KisOpenGL::BilinearFilterMode:
                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
                    break;
                case KisOpenGL::TrilinearFilterMode:
                    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
                    break;
                case KisOpenGL::HighQualityFiltering:
                    if (SCALE_LESS_THAN(scaleX, scaleY, 0.5)) {
                        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_NEAREST);
                    } else {
                        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
                    }
                    break;
                }
            }
 
            glDrawArrays(GL_TRIANGLES, 0, 6);
        }
    }
 
    glBindTexture(GL_TEXTURE_2D, 0);
    glBindBuffer(GL_ARRAY_BUFFER, 0);
}

◆ finishResizingImage()

void KisOpenGLCanvasRenderer::finishResizingImage	(	qint32	w,
		qint32	h )

Definition at line 1105 of file KisOpenGLCanvasRenderer.cpp.

{
    if (d->canvasInitialized) {
        d->openGLImageTextures->slotImageSizeChanged(w, h);
    }
}

References KisOpenGLCanvasRenderer::Private::canvasInitialized, d, KisOpenGLCanvasRenderer::Private::openGLImageTextures, and KisOpenGLImageTextures::slotImageSizeChanged().

◆ initializeDisplayShader()

void KisOpenGLCanvasRenderer::initializeDisplayShader ( )

private

Definition at line 306 of file KisOpenGLCanvasRenderer.cpp.

{
    KIS_SAFE_ASSERT_RECOVER_RETURN(!d->canvasInitialized);
 
    bool useHiQualityFiltering = d->filterMode == KisOpenGL::HighQualityFiltering;
 
    delete d->displayShader;
    d->displayShader = 0;
 
    try {
        d->displayShader = d->shaderLoader.loadDisplayShader(d->displayFilter, useHiQualityFiltering);
        d->displayShaderCompiledWithDisplayFilterSupport = bool(d->displayFilter);
    } catch (const ShaderLoaderException &e) {
        reportFailedShaderCompilation(e.what());
    }
}

References KisOpenGLCanvasRenderer::Private::canvasInitialized, d, KisOpenGLCanvasRenderer::Private::displayFilter, KisOpenGLCanvasRenderer::Private::displayShader, KisOpenGLCanvasRenderer::Private::displayShaderCompiledWithDisplayFilterSupport, KisOpenGLCanvasRenderer::Private::filterMode, KisOpenGL::HighQualityFiltering, KIS_SAFE_ASSERT_RECOVER_RETURN, KisOpenGLShaderLoader::loadDisplayShader(), reportFailedShaderCompilation(), and KisOpenGLCanvasRenderer::Private::shaderLoader.

◆ initializeGL()

void KisOpenGLCanvasRenderer::initializeGL ( )

Definition at line 244 of file KisOpenGLCanvasRenderer.cpp.

{
    KisOpenGL::initializeContext(context());
    initializeOpenGLFunctions();
 
    KisConfig cfg(true);
    d->openGLImageTextures->setProofingConfig(canvas()->proofingConfiguration());
    d->openGLImageTextures->initGL(context()->functions());
    d->openGLImageTextures->generateCheckerTexture(KisCanvasWidgetBase::createCheckersImage(cfg.checkSize()));
 
    initializeShaders();
 
    // If we support OpenGL 3.0, then prepare our VAOs and VBOs for drawing
    if (KisOpenGL::supportsVAO()) {
        d->quadVAO.create();
        d->quadVAO.bind();
 
        glEnableVertexAttribArray(PROGRAM_VERTEX_ATTRIBUTE);
        glEnableVertexAttribArray(PROGRAM_TEXCOORD_ATTRIBUTE);
 
        d->checkersVertexBuffer.allocate(NumberOfBuffers, 6 * 3 * sizeof(float));
        d->checkersTextureVertexBuffer.allocate(NumberOfBuffers, 6 * 2 * sizeof(float));
 
        // Create the outline buffer, this buffer will store the outlines of
        // tools and will frequently change data
        d->outlineVAO.create();
        d->outlineVAO.bind();
 
        glEnableVertexAttribArray(PROGRAM_VERTEX_ATTRIBUTE);
 
        // The outline buffer has a StreamDraw usage pattern, because it changes constantly
        d->lineVertexBuffer.create();
        d->lineVertexBuffer.setUsagePattern(QOpenGLBuffer::StreamDraw);
        d->lineVertexBuffer.bind();
        glVertexAttribPointer(PROGRAM_VERTEX_ATTRIBUTE, 3, GL_FLOAT, GL_FALSE, 0, 0);
    }
 
    d->canvasInitialized = true;
}

References KisOpenGLBufferCircularStorage::allocate(), canvas(), KisOpenGLCanvasRenderer::Private::canvasInitialized, KisOpenGLCanvasRenderer::Private::checkersTextureVertexBuffer, KisOpenGLCanvasRenderer::Private::checkersVertexBuffer, KisConfig::checkSize(), context(), KisCanvasWidgetBase::createCheckersImage(), d, KisOpenGLImageTextures::generateCheckerTexture(), KisOpenGLImageTextures::initGL(), KisOpenGL::initializeContext(), initializeShaders(), KisOpenGLCanvasRenderer::Private::lineVertexBuffer, NumberOfBuffers, KisOpenGLCanvasRenderer::Private::openGLImageTextures, KisOpenGLCanvasRenderer::Private::outlineVAO, PROGRAM_TEXCOORD_ATTRIBUTE, PROGRAM_VERTEX_ATTRIBUTE, KisOpenGLCanvasRenderer::Private::quadVAO, KisOpenGLImageTextures::setProofingConfig(), and KisOpenGL::supportsVAO().

◆ initializeShaders()

void KisOpenGLCanvasRenderer::initializeShaders ( )

private

Loads all shaders and reports compilation problems

Definition at line 287 of file KisOpenGLCanvasRenderer.cpp.

{
    KIS_SAFE_ASSERT_RECOVER_RETURN(!d->canvasInitialized);
 
    delete d->checkerShader;
    delete d->solidColorShader;
    d->checkerShader = 0;
    d->solidColorShader = 0;
 
    try {
        d->checkerShader = d->shaderLoader.loadCheckerShader();
        d->solidColorShader = d->shaderLoader.loadSolidColorShader();
    } catch (const ShaderLoaderException &e) {
        reportFailedShaderCompilation(e.what());
    }
 
    initializeDisplayShader();
}

References KisOpenGLCanvasRenderer::Private::canvasInitialized, KisOpenGLCanvasRenderer::Private::checkerShader, d, initializeDisplayShader(), KIS_SAFE_ASSERT_RECOVER_RETURN, KisOpenGLShaderLoader::loadCheckerShader(), KisOpenGLShaderLoader::loadSolidColorShader(), reportFailedShaderCompilation(), KisOpenGLCanvasRenderer::Private::shaderLoader, and KisOpenGLCanvasRenderer::Private::solidColorShader.

◆ notifyImageColorSpaceChanged()

void KisOpenGLCanvasRenderer::notifyImageColorSpaceChanged ( const KoColorSpace * cs )

Definition at line 214 of file KisOpenGLCanvasRenderer.cpp.

{
    // FIXME: on color space change the data is refetched multiple
    //        times by different actors!
 
    if (d->openGLImageTextures->setImageColorSpace(cs)) {
        canvas()->startUpdateInPatches(canvas()->image()->bounds());
    }
}

References bounds, canvas(), d, KisOpenGLCanvasRenderer::Private::openGLImageTextures, KisOpenGLImageTextures::setImageColorSpace(), and KisCanvas2::startUpdateInPatches().

◆ openGLImageTextures()

KisOpenGLImageTexturesSP KisOpenGLCanvasRenderer::openGLImageTextures ( ) const

Definition at line 1134 of file KisOpenGLCanvasRenderer.cpp.

{
    return d->openGLImageTextures;
}

References d, and KisOpenGLCanvasRenderer::Private::openGLImageTextures.

◆ paintCanvasOnly()

void KisOpenGLCanvasRenderer::paintCanvasOnly	(	const QRect &	canvasImageDirtyRect,
		const QRect &	viewportUpdateRect = QRect() )

Paint only the canvas background and image tiles.

Definition at line 368 of file KisOpenGLCanvasRenderer.cpp.

{
    if (d->canvasFBO) {
        if (!canvasImageDirtyRect.isEmpty()) {
            d->canvasFBO->bind();
            renderCanvasGL(canvasImageDirtyRect);
            d->canvasFBO->release();
        }
        QRect blitRect;
        if (viewportUpdateRect.isEmpty()) {
            blitRect = QRect(QPoint(), d->viewportDevicePixelSize);
        } else {
            const QTransform scale = QTransform::fromScale(1.0, -1.0) * QTransform::fromTranslate(0, d->pixelAlignedWidgetSize.height()) * QTransform::fromScale(devicePixelRatioF(), devicePixelRatioF());
            blitRect = scale.mapRect(QRectF(viewportUpdateRect)).toAlignedRect();
        }
        QOpenGLFramebufferObject::blitFramebuffer(nullptr, blitRect, d->canvasFBO.data(), blitRect, GL_COLOR_BUFFER_BIT, GL_NEAREST);
        QOpenGLFramebufferObject::bindDefault();
    } else {
        QRect fullUpdateRect = canvasImageDirtyRect | viewportUpdateRect;
        if (fullUpdateRect.isEmpty()) {
            fullUpdateRect = QRect(QPoint(), d->viewportDevicePixelSize);
        }
        renderCanvasGL(fullUpdateRect);
    }
}

References KisOpenGLCanvasRenderer::Private::canvasFBO, d, devicePixelRatioF(), KisOpenGLCanvasRenderer::Private::pixelAlignedWidgetSize, renderCanvasGL(), and KisOpenGLCanvasRenderer::Private::viewportDevicePixelSize.

◆ paintToolOutline()

void KisOpenGLCanvasRenderer::paintToolOutline	(	const KisOptimizedBrushOutline &	path,
		const QRect &	viewportUpdateRect,
		const int	thickness = 1 )

Definition at line 394 of file KisOpenGLCanvasRenderer.cpp.

{
    if (!d->solidColorShader->bind()) {
        return;
    }
 
    const QSizeF &widgetSize = d->pixelAlignedWidgetSize;
 
    // setup the mvp transformation
    QMatrix4x4 projectionMatrix;
    projectionMatrix.setToIdentity();
    // FIXME: It may be better to have the projection in device pixel, but
    //       this requires introducing a new coordinate system.
    projectionMatrix.ortho(0, widgetSize.width(), widgetSize.height(), 0, NEAR_VAL, FAR_VAL);
 
    // Set view/projection matrices
    QMatrix4x4 modelMatrix(coordinatesConverter()->flakeToWidgetTransform());
    modelMatrix.optimize();
    modelMatrix = projectionMatrix * modelMatrix;
    d->solidColorShader->setUniformValue(d->solidColorShader->location(Uniform::ModelViewProjection), modelMatrix);
 
    d->solidColorShader->setUniformValue(
                d->solidColorShader->location(Uniform::FragmentColor),
                QVector4D(d->cursorColor.redF(), d->cursorColor.greenF(), d->cursorColor.blueF(), 1.0f));
 
    glEnable(GL_BLEND);
    glBlendFuncSeparate(GL_ONE, GL_SRC_COLOR, GL_ONE, GL_ONE);
    glBlendEquationSeparate(GL_FUNC_SUBTRACT, GL_FUNC_ADD);
 
 
    if (!viewportUpdateRect.isEmpty()) {
        const QRect deviceUpdateRect = widgetToSurface(viewportUpdateRect).toAlignedRect();
        glScissor(deviceUpdateRect.x(), deviceUpdateRect.y(), deviceUpdateRect.width(), deviceUpdateRect.height());
        glEnable(GL_SCISSOR_TEST);
    }
 
    // Paint the tool outline
    if (KisOpenGL::supportsVAO()) {
        d->outlineVAO.bind();
        d->lineVertexBuffer.bind();
    }
 
    QVector<QVector3D> verticesBuffer;
 
    if (thickness > 1) {
        // Because glLineWidth is not supported on all versions of OpenGL (or rather,
        // is limited to 1, as returned by GL_ALIASED_LINE_WIDTH_RANGE),
        // we'll instead generate mitered-triangles.
 
        const qreal halfWidth = (thickness * 0.5) / devicePixelRatioF();
        const qreal miterLimit = (5 * thickness) / devicePixelRatioF();
 
        for (auto it = path.begin(); it != path.end(); ++it) {
            const QPolygonF& polygon = *it;
 
            if (KisAlgebra2D::maxDimension(polygon.boundingRect()) < 0.5 * thickness) {
                continue;
            }
 
            int triangleCount = 0;
            verticesBuffer.clear();
            const bool closed = polygon.isClosed();
 
            for( int i = 1; i < polygon.count(); i++) {
                bool adjustFirst = closed? true: i > 1;
                bool adjustSecond = closed? true: i + 1 < polygon.count();
 
                QPointF p1 = polygon.at(i - 1);
                QPointF p2 = polygon.at(i);
                QPointF normal = p2 - p1;
                normal = KisAlgebra2D::normalize(QPointF(-normal.y(), normal.x()));
 
                QPointF c1 = p1 - (normal * halfWidth);
                QPointF c2 = p1 + (normal * halfWidth);
                QPointF c3 = p2 - (normal * halfWidth);
                QPointF c4 = p2 + (normal * halfWidth);
 
                // Add miter
                if (adjustFirst) {
                    QPointF pPrev = i >= 2 ?
                        QPointF(polygon.at(i-2)) :
                        QPointF(polygon.at(qMax(polygon.count() - 2, 0)));
 
                    pPrev = p1 - pPrev;
 
                    QPointF miter =
                        KisAlgebra2D::normalize(normal +
                                                KisAlgebra2D::normalize(
                                                    QPointF(-pPrev.y(), pPrev.x())));
 
                    const qreal dot = KisAlgebra2D::dotProduct(miter, normal);
 
                    if (KisAlgebra2D::norm((miter * halfWidth) / dot) < miterLimit) {
                        c1 = p1 + ((miter * -halfWidth) / dot);
                        c2 = p1 + ((miter * halfWidth) / dot);
                    }
                }
 
                if (adjustSecond) {
                    QPointF pNext = i + 1 < polygon.count()? QPointF(polygon.at(i+1))
                                                             : QPointF(polygon.at(qMin(polygon.count(), 1)));
                    pNext = pNext - p2;
                    QPointF miter =
                        KisAlgebra2D::normalize(
                            normal + KisAlgebra2D::normalize(QPointF(-pNext.y(), pNext.x())));
                    const qreal dot = KisAlgebra2D::dotProduct(miter, normal);
 
                    if (KisAlgebra2D::norm((miter * halfWidth) / dot) < miterLimit) {
                        c3 = p2 + ((miter * -halfWidth) / dot);
                        c4 = p2 + (miter * halfWidth) / dot;
                    }
                }
 
                verticesBuffer.append(QVector3D(c1));
                verticesBuffer.append(QVector3D(c3));
                verticesBuffer.append(QVector3D(c2));
                verticesBuffer.append(QVector3D(c4));
                verticesBuffer.append(QVector3D(c2));
                verticesBuffer.append(QVector3D(c3));
                triangleCount += 2;
            }
 
            if (KisOpenGL::supportsVAO()) {
                d->lineVertexBuffer.bind();
                d->lineVertexBuffer.allocate(verticesBuffer.constData(), 3 * verticesBuffer.size() * sizeof(float));
            }
            else {
                d->solidColorShader->enableAttributeArray(PROGRAM_VERTEX_ATTRIBUTE);
                d->solidColorShader->setAttributeArray(PROGRAM_VERTEX_ATTRIBUTE, verticesBuffer.constData());
            }
 
            glDrawArrays(GL_TRIANGLES, 0, triangleCount * 3);
        }
    } else {
        // Convert every disjointed subpath to a polygon and draw that polygon
        for (auto it = path.begin(); it != path.end(); ++it) {
            const QPolygonF& polygon = *it;
 
            if (KisAlgebra2D::maxDimension(polygon.boundingRect()) < 0.5) {
                continue;
            }
 
            const int verticesCount = polygon.count();
 
            if (verticesBuffer.size() < verticesCount) {
                verticesBuffer.resize(verticesCount);
            }
 
            for (int vertIndex = 0; vertIndex < verticesCount; vertIndex++) {
                QPointF point = polygon.at(vertIndex);
                verticesBuffer[vertIndex].setX(point.x());
                verticesBuffer[vertIndex].setY(point.y());
            }
            if (KisOpenGL::supportsVAO()) {
                d->lineVertexBuffer.bind();
                d->lineVertexBuffer.allocate(verticesBuffer.constData(), 3 * verticesCount * sizeof(float));
            }
            else {
                d->solidColorShader->enableAttributeArray(PROGRAM_VERTEX_ATTRIBUTE);
                d->solidColorShader->setAttributeArray(PROGRAM_VERTEX_ATTRIBUTE, verticesBuffer.constData());
            }
 
 
 
            glDrawArrays(GL_LINE_STRIP, 0, verticesCount);
        }
    }
 
    if (KisOpenGL::supportsVAO()) {
        d->lineVertexBuffer.release();
        d->outlineVAO.release();
    }
 
    if (!viewportUpdateRect.isEmpty()) {
        glDisable(GL_SCISSOR_TEST);
    }
 
    glBlendEquation(GL_FUNC_ADD);
    glBlendFunc(GL_ONE, GL_ZERO);
    glDisable(GL_BLEND);
 
    d->solidColorShader->release();
}

References coordinatesConverter(), KisOpenGLCanvasRenderer::Private::cursorColor, d, devicePixelRatioF(), KisAlgebra2D::dotProduct(), FAR_VAL, FragmentColor, KisOpenGLCanvasRenderer::Private::lineVertexBuffer, KisShaderProgram::location(), KisAlgebra2D::maxDimension(), ModelViewProjection, NEAR_VAL, KisAlgebra2D::norm(), KisAlgebra2D::normalize(), KisOpenGLCanvasRenderer::Private::outlineVAO, p1, p2, KisOpenGLCanvasRenderer::Private::pixelAlignedWidgetSize, PROGRAM_VERTEX_ATTRIBUTE, KisOpenGLCanvasRenderer::Private::solidColorShader, KisOpenGL::supportsVAO(), and widgetToSurface().

◆ renderCanvasGL()

void KisOpenGLCanvasRenderer::renderCanvasGL ( const QRect & updateRect )

private

Definition at line 1049 of file KisOpenGLCanvasRenderer.cpp.

{
    if ((d->displayFilter && d->displayFilter->updateShader()) ||
        (bool(d->displayFilter) != d->displayShaderCompiledWithDisplayFilterSupport)) {
 
        KIS_SAFE_ASSERT_RECOVER_NOOP(d->canvasInitialized);
 
        d->canvasInitialized = false; // TODO: check if actually needed?
        initializeDisplayShader();
        d->canvasInitialized = true;
    }
 
    if (KisOpenGL::supportsVAO()) {
        d->quadVAO.bind();
    }
 
    QRect alignedUpdateRect = updateRect;
 
    if (!updateRect.isEmpty()) {
        const QRect deviceUpdateRect = widgetToSurface(updateRect).toAlignedRect();
        alignedUpdateRect = surfaceToWidget(deviceUpdateRect).toAlignedRect();
 
        glScissor(deviceUpdateRect.x(), deviceUpdateRect.y(), deviceUpdateRect.width(), deviceUpdateRect.height());
        glEnable(GL_SCISSOR_TEST);
    }
 
    drawBackground(alignedUpdateRect);
    drawCheckers(alignedUpdateRect);
    drawImage(alignedUpdateRect);
 
    if ((coordinatesConverter()->effectivePhysicalZoom() > d->pixelGridDrawingThreshold - 0.00001) && d->pixelGridEnabled) {
        drawGrid(alignedUpdateRect);
    }
 
    if (!updateRect.isEmpty()) {
        glDisable(GL_SCISSOR_TEST);
    }
 
    if (KisOpenGL::supportsVAO()) {
        d->quadVAO.release();
    }
}

References KisOpenGLCanvasRenderer::Private::canvasInitialized, coordinatesConverter(), d, KisOpenGLCanvasRenderer::Private::displayFilter, KisOpenGLCanvasRenderer::Private::displayShaderCompiledWithDisplayFilterSupport, drawBackground(), drawCheckers(), drawGrid(), drawImage(), initializeDisplayShader(), KIS_SAFE_ASSERT_RECOVER_NOOP, KisOpenGLCanvasRenderer::Private::pixelGridDrawingThreshold, KisOpenGLCanvasRenderer::Private::pixelGridEnabled, KisOpenGLCanvasRenderer::Private::quadVAO, KisOpenGL::supportsVAO(), surfaceToWidget(), and widgetToSurface().

◆ reportFailedShaderCompilation()

void KisOpenGLCanvasRenderer::reportFailedShaderCompilation ( const QString & context )

private

Displays a message box telling the user that shader compilation failed and turns off OpenGL.

Definition at line 327 of file KisOpenGLCanvasRenderer.cpp.

{
    KisConfig cfg(false);
 
    qDebug() << "Shader Compilation Failure: " << context;
    // TODO: Should do something else when using QtQuick2
    QMessageBox::critical(qApp->activeWindow(), i18nc("@title:window", "Krita"),
                          i18n("Krita could not initialize the OpenGL canvas:\n\n%1\n\n Krita will disable OpenGL and close now.", context),
                          QMessageBox::Close);
 
    cfg.disableOpenGL();
    cfg.setCanvasState("OPENGL_FAILED");
}

References context(), KisConfig::disableOpenGL(), and KisConfig::setCanvasState().

◆ resizeGL()

void KisOpenGLCanvasRenderer::resizeGL	(	int	width,
		int	height )

Definition at line 341 of file KisOpenGLCanvasRenderer.cpp.

{
    {
        // just a sanity check!
        //
        // This is how QOpenGLCanvas sets the FBO and the viewport size. If
        // devicePixelRatioF() is non-integral, the result is truncated.
        // *Correction*: The FBO size is actually rounded, but the glViewport call
        // uses integer truncation and that's what really matters.
        int viewportWidth = static_cast<int>(width * devicePixelRatioF());
        int viewportHeight = static_cast<int>(height * devicePixelRatioF());
 
        // we expect the size to be adjusted in the converter at the higher
        // level of hierarchy
        KIS_SAFE_ASSERT_RECOVER_NOOP(QSize(viewportWidth, viewportHeight) == coordinatesConverter()->viewportDevicePixelSize());
    }
 
    d->viewportDevicePixelSize = coordinatesConverter()->viewportDevicePixelSize();
    d->pixelAlignedWidgetSize = coordinatesConverter()->getCanvasWidgetSize();
 
    if (KisOpenGL::useFBOForToolOutlineRendering()) {
        QOpenGLFramebufferObjectFormat format;
        format.setInternalTextureFormat(d->canvasBridge->internalTextureFormat());
        d->canvasFBO.reset(new QOpenGLFramebufferObject(d->viewportDevicePixelSize, format));
    }
}

References KisOpenGLCanvasRenderer::Private::canvasBridge, KisOpenGLCanvasRenderer::Private::canvasFBO, coordinatesConverter(), d, devicePixelRatioF(), KisCoordinatesConverter::getCanvasWidgetSize(), KisOpenGLCanvasRenderer::CanvasBridge::internalTextureFormat(), KIS_SAFE_ASSERT_RECOVER_NOOP, KisOpenGLCanvasRenderer::Private::pixelAlignedWidgetSize, KisOpenGL::useFBOForToolOutlineRendering(), KisCoordinatesConverter::viewportDevicePixelSize(), and KisOpenGLCanvasRenderer::Private::viewportDevicePixelSize.

◆ setDisplayConfig()

void KisOpenGLCanvasRenderer::setDisplayConfig ( const KisDisplayConfig & config )

Definition at line 1092 of file KisOpenGLCanvasRenderer.cpp.

{
    d->openGLImageTextures->setMonitorProfile(config.profile,
                                              config.intent,
                                              config.conversionFlags);
}

References KisDisplayConfig::conversionFlags, d, KisDisplayConfig::intent, KisOpenGLCanvasRenderer::Private::openGLImageTextures, KisDisplayConfig::profile, and KisOpenGLImageTextures::setMonitorProfile().

◆ setDisplayFilter()

void KisOpenGLCanvasRenderer::setDisplayFilter ( QSharedPointer< KisDisplayFilter > displayFilter )

Definition at line 192 of file KisOpenGLCanvasRenderer.cpp.

{
    setDisplayFilterImpl(displayFilter, false);
}

References setDisplayFilterImpl().

◆ setDisplayFilterImpl()

void KisOpenGLCanvasRenderer::setDisplayFilterImpl	(	QSharedPointer< KisDisplayFilter >	displayFilter,
		bool	initializing )

private

Definition at line 197 of file KisOpenGLCanvasRenderer.cpp.

{
    bool needsInternalColorManagement =
            !displayFilter || displayFilter->useInternalColorManagement();
 
    bool needsFullRefresh = d->openGLImageTextures->setInternalColorManagementActive(needsInternalColorManagement);
 
    d->displayFilter = displayFilter;
 
    if (!initializing && needsFullRefresh) {
        canvas()->startUpdateInPatches(canvas()->image()->bounds());
    }
    else if (!initializing)  {
        canvas()->updateCanvas();
    }
}

References bounds, canvas(), d, KisOpenGLCanvasRenderer::Private::displayFilter, KisOpenGLCanvasRenderer::Private::openGLImageTextures, KisOpenGLImageTextures::setInternalColorManagementActive(), KisCanvas2::startUpdateInPatches(), and KisCanvas2::updateCanvas().

◆ setLodResetInProgress()

void KisOpenGLCanvasRenderer::setLodResetInProgress ( bool value )

Definition at line 578 of file KisOpenGLCanvasRenderer.cpp.

{
    d->lodSwitchInProgress = value;
}

References d, KisOpenGLCanvasRenderer::Private::lodSwitchInProgress, and value().

◆ setWrapAroundViewingMode()

void KisOpenGLCanvasRenderer::setWrapAroundViewingMode ( bool value )

Definition at line 224 of file KisOpenGLCanvasRenderer.cpp.

{
    d->wrapAroundMode = value;
}

References d, value(), and KisOpenGLCanvasRenderer::Private::wrapAroundMode.

◆ setWrapAroundViewingModeAxis()

void KisOpenGLCanvasRenderer::setWrapAroundViewingModeAxis ( WrapAroundAxis value )

Definition at line 234 of file KisOpenGLCanvasRenderer.cpp.

{
    d->wrapAroundModeAxis = value;
}

References d, value(), and KisOpenGLCanvasRenderer::Private::wrapAroundModeAxis.

◆ startUpdateCanvasProjection()

KisUpdateInfoSP KisOpenGLCanvasRenderer::startUpdateCanvasProjection ( const QRect & rc )

Definition at line 1112 of file KisOpenGLCanvasRenderer.cpp.

{
    if (canvas()->proofingConfigUpdated()) {
        d->openGLImageTextures->setProofingConfig(canvas()->proofingConfiguration());
        canvas()->setProofingConfigUpdated(false);
    }
    return d->openGLImageTextures->updateCache(rc, d->openGLImageTextures->image());
}

References canvas(), d, KisOpenGLImageTextures::image(), KisOpenGLCanvasRenderer::Private::openGLImageTextures, KisOpenGLImageTextures::setProofingConfig(), KisCanvas2::setProofingConfigUpdated(), and KisOpenGLImageTextures::updateCache().

◆ surfaceToWidget()

QRectF KisOpenGLCanvasRenderer::surfaceToWidget ( const QRectF & rc )

private

Definition at line 1038 of file KisOpenGLCanvasRenderer.cpp.

{
    const qreal ratio = devicePixelRatioF();
 
    return QRectF(rc.x() / ratio,
                  d->pixelAlignedWidgetSize.height() - (rc.y() + rc.height()) / ratio,
                  rc.width() / ratio,
                  rc.height() / ratio);
}

References d, devicePixelRatioF(), and KisOpenGLCanvasRenderer::Private::pixelAlignedWidgetSize.

◆ updateCanvasProjection()

QRect KisOpenGLCanvasRenderer::updateCanvasProjection ( KisUpdateInfoSP info )

Definition at line 1122 of file KisOpenGLCanvasRenderer.cpp.

{
    // See KisQPainterCanvas::updateCanvasProjection for more info
    bool isOpenGLUpdateInfo = dynamic_cast<KisOpenGLUpdateInfo*>(info.data());
    if (isOpenGLUpdateInfo) {
        d->openGLImageTextures->recalculateCache(info, d->lodSwitchInProgress);
    }
 
    const QRect dirty = kisGrowRect(coordinatesConverter()->imageToWidget(info->dirtyImageRect()).toAlignedRect(), 2);
    return dirty;
}

References coordinatesConverter(), d, KisSharedPtr< T >::data(), kisGrowRect(), KisOpenGLCanvasRenderer::Private::lodSwitchInProgress, KisOpenGLCanvasRenderer::Private::openGLImageTextures, and KisOpenGLImageTextures::recalculateCache().

◆ updateConfig()

void KisOpenGLCanvasRenderer::updateConfig ( )

Definition at line 997 of file KisOpenGLCanvasRenderer.cpp.

{
    KisConfig cfg(true);
    d->checkSizeScale = KisOpenGLImageTextures::BACKGROUND_TEXTURE_CHECK_SIZE / static_cast<GLfloat>(cfg.checkSize());
    d->scrollCheckers = cfg.scrollCheckers();
 
    d->openGLImageTextures->generateCheckerTexture(KisCanvasWidgetBase::createCheckersImage(cfg.checkSize()));
    d->openGLImageTextures->updateConfig(cfg.useOpenGLTextureBuffer(), cfg.numMipmapLevels());
    d->filterMode = (KisOpenGL::FilterMode) cfg.openGLFilteringMode();
 
    updateCursorColor();
}

References KisOpenGLImageTextures::BACKGROUND_TEXTURE_CHECK_SIZE, KisConfig::checkSize(), KisOpenGLCanvasRenderer::Private::checkSizeScale, KisCanvasWidgetBase::createCheckersImage(), d, KisOpenGLCanvasRenderer::Private::filterMode, KisOpenGLImageTextures::generateCheckerTexture(), KisConfig::numMipmapLevels(), KisConfig::openGLFilteringMode(), KisOpenGLCanvasRenderer::Private::openGLImageTextures, KisConfig::scrollCheckers(), KisOpenGLCanvasRenderer::Private::scrollCheckers, KisOpenGLImageTextures::updateConfig(), updateCursorColor(), and KisConfig::useOpenGLTextureBuffer().

◆ updateCursorColor()

void KisOpenGLCanvasRenderer::updateCursorColor ( )

Definition at line 1010 of file KisOpenGLCanvasRenderer.cpp.

{
    KisConfig cfg(true);
    bool useSeparateEraserCursor = cfg.separateEraserCursor() &&
            canvas()->resourceManager()->resource(KoCanvasResource::CurrentEffectiveCompositeOp).toString() == COMPOSITE_ERASE;
 
    d->cursorColor = (!useSeparateEraserCursor) ? cfg.getCursorMainColor() : cfg.getEraserCursorMainColor();
}

References canvas(), COMPOSITE_ERASE, KoCanvasResource::CurrentEffectiveCompositeOp, KisOpenGLCanvasRenderer::Private::cursorColor, d, KisConfig::getCursorMainColor(), KisConfig::getEraserCursorMainColor(), KoCanvasBase::resourceManager, and KisConfig::separateEraserCursor().

◆ updatePixelGridMode()

void KisOpenGLCanvasRenderer::updatePixelGridMode ( )

Definition at line 1019 of file KisOpenGLCanvasRenderer.cpp.

{
    KisConfig cfg(true);
 
    d->pixelGridDrawingThreshold = cfg.getPixelGridDrawingThreshold();
    d->pixelGridEnabled = cfg.pixelGridEnabled();
    d->gridColor = cfg.getPixelGridColor();
}

References d, KisConfig::getPixelGridColor(), KisConfig::getPixelGridDrawingThreshold(), KisOpenGLCanvasRenderer::Private::gridColor, KisOpenGLCanvasRenderer::Private::pixelGridDrawingThreshold, KisConfig::pixelGridEnabled(), and KisOpenGLCanvasRenderer::Private::pixelGridEnabled.

◆ widgetToSurface()

QRectF KisOpenGLCanvasRenderer::widgetToSurface ( const QRectF & rc )

private

Definition at line 1028 of file KisOpenGLCanvasRenderer.cpp.

{
    const qreal ratio = devicePixelRatioF();
 
    return QRectF(rc.x() * ratio,
                  (d->pixelAlignedWidgetSize.height() - rc.y() - rc.height()) * ratio,
                  rc.width() * ratio,
                  rc.height() * ratio);
}

References d, devicePixelRatioF(), and KisOpenGLCanvasRenderer::Private::pixelAlignedWidgetSize.

◆ wrapAroundViewingMode()

bool KisOpenGLCanvasRenderer::wrapAroundViewingMode ( ) const

Definition at line 229 of file KisOpenGLCanvasRenderer.cpp.

{
    return d->wrapAroundMode;
}

References d, and KisOpenGLCanvasRenderer::Private::wrapAroundMode.

◆ wrapAroundViewingModeAxis()

WrapAroundAxis KisOpenGLCanvasRenderer::wrapAroundViewingModeAxis ( ) const

Definition at line 239 of file KisOpenGLCanvasRenderer.cpp.

{
    return d->wrapAroundModeAxis;
}

References d, and KisOpenGLCanvasRenderer::Private::wrapAroundModeAxis.

Member Data Documentation

◆ d

Private* const KisOpenGLCanvasRenderer::d

private

Definition at line 116 of file KisOpenGLCanvasRenderer.h.

The documentation for this class was generated from the following files:

libs/ui/opengl/KisOpenGLCanvasRenderer.h
libs/ui/opengl/KisOpenGLCanvasRenderer.cpp

Classes

Public Member Functions

Private Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

◆ KisOpenGLCanvasRenderer()

◆ ~KisOpenGLCanvasRenderer()

Member Function Documentation

◆ borderColor()

◆ canvas()

◆ channelSelectionChanged()

◆ context()

◆ coordinatesConverter()

◆ devicePixelRatioF()

◆ drawBackground()

◆ drawCheckers()

◆ drawGrid()

◆ drawImage()

◆ drawImageTiles()

◆ finishResizingImage()

◆ initializeDisplayShader()

◆ initializeGL()

◆ initializeShaders()

◆ notifyImageColorSpaceChanged()

◆ openGLImageTextures()

◆ paintCanvasOnly()

◆ paintToolOutline()

◆ renderCanvasGL()

◆ reportFailedShaderCompilation()

◆ resizeGL()

◆ setDisplayConfig()

◆ setDisplayFilter()

◆ setDisplayFilterImpl()

◆ setLodResetInProgress()

◆ setWrapAroundViewingMode()

◆ setWrapAroundViewingModeAxis()

◆ startUpdateCanvasProjection()

◆ surfaceToWidget()

◆ updateCanvasProjection()

◆ updateConfig()

◆ updateCursorColor()

◆ updatePixelGridMode()

◆ widgetToSurface()

◆ wrapAroundViewingMode()

◆ wrapAroundViewingModeAxis()

Member Data Documentation

◆ d