uniform mat4 matMVP;
    attribute float fValue;
    attribute float fTime;
    void main() {
        gl_Position = matMVP * vec4(fTime, fValue, 0.0, 1.0);
    }

    void render()
    {
        m_gl.glClearColor(0.0, 0.0, 0.0, 0.0);
        m_gl.glClear(GL_COLOR_BUFFER_BIT);//|GL_DEPTH_BUFFER_BIT);

        if(!m_file) {
            // Nothing to render
            return;
        }

        double timeWindowWidth = 1.0 - m_timeScale + m_timeScale * m_minTimeScale;
        double offset = (1.0 - timeWindowWidth) * m_position;

        m_program.bind();

        for(int j = 0; j < m_flatParams.length(); j++) {
            const LogViewParameter *lvp = m_flatParams[j];
            if(!lvp->enabled()) {
                continue;
            }

            m_vao[j]->bind();

            m_program.setUniformValue("lineColor", lvp->glColor);

            QMatrix4x4 mvp;
            mvp.ortho(offset, offset + timeWindowWidth, lvp->groupMin, lvp->groupMax, -1.0, 1.0);
            m_program.setUniformValue("matMVP", mvp);

            m_gl.glDrawArrays(GL_LINE_STRIP, 0, m_file->recordsTotal());

            m_vao[j]->release();
        }

        m_program.release();
    }