KisFilterPreviewWidget::KisFilterPreviewWidget(QWidget* parent): QWidget(parent)
{
    KisConfig cfg;
    // for preview make it smaller than on canvas
    qint32 checkSize = qMax(1,cfg.checkSize() / 2);
    QImage checkImage = KisCanvasWidgetBase::createCheckersImage(checkSize);
    m_checkBrush = QBrush(checkImage);
    m_pixmap = QPixmap::fromImage(checkImage);
}
Exemple #2
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void KisOpenGLCanvas2::initializeGL()
{
    KisOpenGL::initializeContext(context());
    initializeOpenGLFunctions();

    KisConfig cfg;
    d->openGLImageTextures->setProofingConfig(canvas()->proofingConfiguration());
    d->openGLImageTextures->initGL(context()->functions());
    d->openGLImageTextures->generateCheckerTexture(createCheckersImage(cfg.checkSize()));

    initializeShaders();

    // If we support OpenGL 3.2, then prepare our VAOs and VBOs for drawing
    if (KisOpenGL::hasOpenGL3()) {
        d->quadVAO.create();
        d->quadVAO.bind();

        glEnableVertexAttribArray(PROGRAM_VERTEX_ATTRIBUTE);
        glEnableVertexAttribArray(PROGRAM_TEXCOORD_ATTRIBUTE);

        // Create the vertex buffer object, it has 6 vertices with 3 components
        d->quadBuffers[0].create();
        d->quadBuffers[0].setUsagePattern(QOpenGLBuffer::StaticDraw);
        d->quadBuffers[0].bind();
        d->quadBuffers[0].allocate(d->vertices, 6 * 3 * sizeof(float));
        glVertexAttribPointer(PROGRAM_VERTEX_ATTRIBUTE, 3, GL_FLOAT, GL_FALSE, 0, 0);

        // Create the texture buffer object, it has 6 texture coordinates with 2 components
        d->quadBuffers[1].create();
        d->quadBuffers[1].setUsagePattern(QOpenGLBuffer::StaticDraw);
        d->quadBuffers[1].bind();
        d->quadBuffers[1].allocate(d->texCoords, 6 * 2 * sizeof(float));
        glVertexAttribPointer(PROGRAM_TEXCOORD_ATTRIBUTE, 2, GL_FLOAT, GL_FALSE, 0, 0);

        // 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->lineBuffer.create();
        d->lineBuffer.setUsagePattern(QOpenGLBuffer::StreamDraw);
        d->lineBuffer.bind();
        glVertexAttribPointer(PROGRAM_VERTEX_ATTRIBUTE, 3, GL_FLOAT, GL_FALSE, 0, 0);
    }

    ptr_glLogicOp = (kis_glLogicOp)(context()->getProcAddress("glLogicOp"));

    Sync::init(context());

    d->canvasInitialized = true;
}
Exemple #3
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void KisOpenGLCanvas2::slotConfigChanged()
{
    KisConfig cfg;
    d->checkSizeScale = KisOpenGLImageTextures::BACKGROUND_TEXTURE_CHECK_SIZE / static_cast<GLfloat>(cfg.checkSize());
    d->scrollCheckers = cfg.scrollCheckers();

    d->openGLImageTextures->generateCheckerTexture(createCheckersImage(cfg.checkSize()));
    d->openGLImageTextures->updateConfig(cfg.useOpenGLTextureBuffer(), cfg.numMipmapLevels());
    d->filterMode = (KisOpenGL::FilterMode) cfg.openGLFilteringMode();

    notifyConfigChanged();
}