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ccGLWindow.cpp
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ccGLWindow.cpp
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//##########################################################################
//# #
//# CLOUDCOMPARE #
//# #
//# This program is free software; you can redistribute it and/or modify #
//# it under the terms of the GNU General Public License as published by #
//# the Free Software Foundation; version 2 or later of the License. #
//# #
//# This program is distributed in the hope that it will be useful, #
//# but WITHOUT ANY WARRANTY; without even the implied warranty of #
//# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
//# GNU General Public License for more details. #
//# #
//# COPYRIGHT: EDF R&D / TELECOM ParisTech (ENST-TSI) #
//# #
//##########################################################################
//qCC
#include "ccGLWindow.h"
#include "ccRenderingTools.h"
//qCC_db
#include <cc2DLabel.h>
#include <ccClipBox.h>
#include <ccColorRampShader.h>
#include <ccHObjectCaster.h>
#include <ccPointCloud.h>
#include <ccPolyline.h>
#include <ccSphere.h> //for the pivot symbol
#include <ccSubMesh.h>
//CCFbo
#include <ccFrameBufferObject.h>
#include <ccGlFilter.h>
//Qt
#include <QApplication>
#include <QLayout>
#include <QMessageBox>
#include <QMimeData>
#include <QOpenGLDebugLogger>
#include <QPushButton>
#include <QSettings>
#include <QTouchEvent>
#include <QWheelEvent>
#include <QOpenGLBuffer>
#if defined( Q_OS_MAC ) || defined( Q_OS_LINUX )
#include <QDir>
#endif
#ifdef CC_GL_WINDOW_USE_QWINDOW
#include <QOpenGLPaintDevice>
#endif
#ifdef CC_OCULUS_SUPPORT
#include "oculus/ccOculus.h"
static OculusHMD s_oculus;
#endif //CC_OCULUS_SUPPORT
#ifdef USE_VLD
#include <vld.h>
#endif
// These extra definitions are required in C++11.
// In C++17, class-level "static constexpr" is implicitly inline, so these are not required.
constexpr float ccGLWindow::MIN_POINT_SIZE_F;
constexpr float ccGLWindow::MAX_POINT_SIZE_F;
constexpr float ccGLWindow::MIN_LINE_WIDTH_F;
constexpr float ccGLWindow::MAX_LINE_WIDTH_F;
//Min and max zoom ratio (relative)
constexpr float CC_GL_MAX_ZOOM_RATIO = 1.0e6f;
constexpr float CC_GL_MIN_ZOOM_RATIO = 1.0e-6f;
//Vaious overlay elements dimensions
constexpr double CC_DISPLAYED_PIVOT_RADIUS_PERCENT = 0.8; //percentage of the smallest screen dimension
constexpr double CC_DISPLAYED_CUSTOM_LIGHT_LENGTH = 10.0;
constexpr float CC_DISPLAYED_TRIHEDRON_AXES_LENGTH = 25.0f;
constexpr float CC_DISPLAYED_CENTER_CROSS_LENGTH = 10.0f;
//Max click duration for enabling picking mode (in ms)
constexpr int CC_MAX_PICKING_CLICK_DURATION_MS = 200;
//invalid GL list index
constexpr GLuint GL_INVALID_LIST_ID = (~0);
//GL filter banner margin (height = 2*margin + current font height)
constexpr int CC_GL_FILTER_BANNER_MARGIN = 5;
//stereo passes
static const unsigned char MONO_OR_LEFT_RENDERING_PASS = 0;
static const unsigned char RIGHT_RENDERING_PASS = 1;
/*** Persistent settings ***/
constexpr char c_ps_groupName[] = "ccGLWindow";
constexpr char c_ps_perspectiveView[] = "perspectiveView";
constexpr char c_ps_objectMode[] = "objectCenteredView";
constexpr char c_ps_sunLight[] = "sunLightEnabled";
constexpr char c_ps_customLight[] = "customLightEnabled";
constexpr char c_ps_pivotVisibility[] = "pivotVisibility";
constexpr char c_ps_stereoGlassType[] = "stereoGlassType";
//Unique GL window ID
static int s_GlWindowNumber = 0;
// Shader path
Q_GLOBAL_STATIC( QString, s_shaderPath );
// Reserved texture indexes
enum class RenderTextReservedIDs {
NotReserved = 0,
FullScreenLabel,
BubbleViewLabel,
PointSizeLabel,
LineSizeLabel,
GLFilterLabel,
ScaleLabel,
StandardMessagePrefix = 1024
};
//On some versions of Qt, QGLWidget::renderText seems to need glColorf instead of glColorub!
// See https://bugreports.qt-project.org/browse/QTBUG-6217
template<class QOpenGLFunctions> inline static void glColor3ubv_safe(QOpenGLFunctions* glFunc, const unsigned char* rgb)
{
assert(glFunc);
glFunc->glColor3f( rgb[0] / 255.0f,
rgb[1] / 255.0f,
rgb[2] / 255.0f);
}
template<class QOpenGLFunctions> inline static void glColor4ubv_safe(QOpenGLFunctions* glFunc, const unsigned char* rgb)
{
assert(glFunc);
glFunc->glColor4f( rgb[0] / 255.0f,
rgb[1] / 255.0f,
rgb[2] / 255.0f,
rgb[3] / 255.0f);
}
//! Precomputed stuff for the 'hot zone'
struct HotZone
{
//display font
QFont font;
//text height
int textHeight;
//text shift
int yTextBottomLineShift;
//default color
unsigned char color[3];
//bubble-view label rect.
QString bbv_label;
//bubble-view label rect.
QRect bbv_labelRect;
//bubble-view row width
int bbv_totalWidth;
//fullscreen label rect.
QString fs_label;
//fullscreen label rect.
QRect fs_labelRect;
//fullscreen row width
int fs_totalWidth;
//point size label
QString psi_label;
//point size label rect.
QRect psi_labelRect;
//point size row width
int psi_totalWidth;
//line size label
QString lsi_label;
//line size label rect.
QRect lsi_labelRect;
//line size row width
int lsi_totalWidth;
int margin;
int iconSize;
QPoint topCorner;
explicit HotZone(ccGLWindow* win)
: textHeight(0)
, yTextBottomLineShift(0)
, bbv_label("bubble-view mode")
, fs_label("fullscreen mode")
, psi_label("default point size")
, lsi_label("default line width")
, margin(16)
, iconSize(16)
, topCorner(0, 0)
{
//default color ("greenish")
color[0] = 133;
color[1] = 193;
color[2] = 39;
if (win)
{
font = win->font();
int retinaScale = win->devicePixelRatio();
font.setPointSize(12 * retinaScale);
margin *= retinaScale;
iconSize *= retinaScale;
font.setBold(true);
}
QFontMetrics metrics(font);
bbv_labelRect = metrics.boundingRect(bbv_label);
fs_labelRect = metrics.boundingRect(fs_label);
psi_labelRect = metrics.boundingRect(psi_label);
lsi_labelRect = metrics.boundingRect(lsi_label);
psi_totalWidth = /*margin() + */psi_labelRect.width() + margin + iconSize + margin + iconSize/* + margin*/;
lsi_totalWidth = /*margin() + */lsi_labelRect.width() + margin + iconSize + margin + iconSize/* + margin*/;
bbv_totalWidth = /*margin() + */bbv_labelRect.width() + margin + iconSize/* + margin*/;
fs_totalWidth = /*margin() + */fs_labelRect.width() + margin + iconSize/* + margin*/;
textHeight = std::max(psi_labelRect.height(), bbv_labelRect.height());
textHeight = std::max(lsi_labelRect.height(), textHeight);
textHeight = std::max(fs_labelRect.height(), textHeight);
textHeight = (3 * textHeight) / 4; // --> factor: to recenter the baseline a little
yTextBottomLineShift = (iconSize / 2) + (textHeight / 2);
}
QRect rect(bool clickableItemsVisible, bool bubbleViewModeEnabled, bool fullScreenEnabled) const
{
//total hot zone area size (without margin)
int totalWidth = 0;
if (clickableItemsVisible)
totalWidth = std::max(psi_totalWidth, lsi_totalWidth);
if (bubbleViewModeEnabled)
totalWidth = std::max(totalWidth, bbv_totalWidth);
if (fullScreenEnabled)
totalWidth = std::max(totalWidth, fs_totalWidth);
QPoint minAreaCorner(0 , std::min(0, yTextBottomLineShift - textHeight));
QPoint maxAreaCorner(totalWidth, std::max(iconSize, yTextBottomLineShift));
int rowCount = clickableItemsVisible ? 2 : 0;
rowCount += bubbleViewModeEnabled ? 1 : 0;
rowCount += fullScreenEnabled ? 1 : 0;
maxAreaCorner.setY(maxAreaCorner.y() + (iconSize + margin) * (rowCount - 1));
QRect areaRect( minAreaCorner - QPoint(margin, margin) / 2,
maxAreaCorner + QPoint(margin, margin) / 2);
return areaRect;
}
};
//! Rendering params
struct ccGLWindow::RenderingParams
{
// Next LOD state
LODState nextLODState;
// Pass info
unsigned char passIndex = 0;
unsigned char passCount = 1;
// 2D background
bool drawBackground = true;
bool clearDepthLayer = true;
bool clearColorLayer = true;
// 3D central layer
bool draw3DPass = true;
bool useFBO = false;
bool draw3DCross = false;
// 2D foreground
bool drawForeground = true;
//! Candidate pivot point(s) (will be used when the mouse is released)
/** Up to 2 candidates, if stereo mode is enabled **/
CCVector3d autoPivotCandidates[2];
bool hasAutoPivotCandidates[2] = { false, false };
};
//! Optional output metrics (from computeProjectionMatrix)
struct ccGLWindow::ProjectionMetrics
{
double zNear = 0.0;
double zFar = 0.0;
double cameraToBBCenterDist = 0.0;
double bbHalfDiag = 0.0;
};
//! Picking parameters
struct ccGLWindow::PickingParameters
{
//! Default constructor
PickingParameters( PICKING_MODE _mode = NO_PICKING,
int _centerX = 0,
int _centerY = 0,
int _pickWidth = 5,
int _pickHeight = 5,
bool _pickInSceneDB = true,
bool _pickInLocalDB = true)
: mode(_mode)
, centerX(_centerX)
, centerY(_centerY)
, pickWidth(_pickWidth)
, pickHeight(_pickHeight)
, pickInSceneDB(_pickInSceneDB)
, pickInLocalDB(_pickInLocalDB)
{}
PICKING_MODE mode;
int centerX;
int centerY;
int pickWidth;
int pickHeight;
bool pickInSceneDB;
bool pickInLocalDB;
};
ccGLWindow::ccGLWindow( QSurfaceFormat* format/*=0*/,
ccGLWindowParent* parent/*=0*/,
bool silentInitialization/*=false*/)
: ccGLWindowParent(parent)
#ifdef CC_GL_WINDOW_USE_QWINDOW
, m_context(nullptr)
, m_device(new QOpenGLPaintDevice)
, m_parentWidget(nullptr)
#endif
, m_uniqueID(++s_GlWindowNumber) //GL window unique ID
, m_initialized(false)
, m_trihedronGLList(GL_INVALID_LIST_ID)
, m_pivotGLList(GL_INVALID_LIST_ID)
, m_lastMousePos(-1, -1)
, m_validModelviewMatrix(false)
, m_validProjectionMatrix(false)
, m_cameraToBBCenterDist(0.0)
, m_bbHalfDiag(0.0)
, m_LODEnabled(true)
, m_LODAutoDisable(false)
, m_shouldBeRefreshed(false)
, m_mouseMoved(false)
, m_mouseButtonPressed(false)
, m_unclosable(false)
, m_interactionFlags(MODE_TRANSFORM_CAMERA)
, m_pickingMode(NO_PICKING)
, m_pickingModeLocked(false)
, m_lastClickTime_ticks(0)
, m_sunLightEnabled(true)
, m_customLightEnabled(false)
, m_clickableItemsVisible(false)
, m_activeShader(nullptr)
, m_shadersEnabled(false)
, m_activeFbo(nullptr)
, m_fbo(nullptr)
, m_fbo2(nullptr)
, m_alwaysUseFBO(false)
, m_updateFBO(true)
, m_colorRampShader(nullptr)
, m_customRenderingShader(nullptr)
, m_activeGLFilter(nullptr)
, m_glFiltersEnabled(false)
, m_winDBRoot(nullptr)
, m_globalDBRoot(nullptr) //external DB
#ifdef CC_GL_WINDOW_USE_QWINDOW
, m_font(QFont())
#else
, m_font(font())
#endif
, m_pivotVisibility(PIVOT_SHOW_ON_MOVE)
, m_pivotSymbolShown(false)
, m_allowRectangularEntityPicking(true)
, m_rectPickingPoly(nullptr)
, m_overridenDisplayParametersEnabled(false)
, m_displayOverlayEntities(true)
, m_silentInitialization(silentInitialization)
, m_bubbleViewModeEnabled(false)
, m_bubbleViewFov_deg(90.0f)
, m_LODPendingRefresh(false)
, m_touchInProgress(false)
, m_touchBaseDist(0.0)
, m_scheduledFullRedrawTime(0)
, m_stereoModeEnabled(false)
, m_formerParent(nullptr)
, m_exclusiveFullscreen(false)
, m_showDebugTraces(false)
, m_pickRadius(DefaultPickRadius)
, m_glExtFuncSupported(false)
, m_autoRefresh(false)
, m_hotZone(nullptr)
, m_showCursorCoordinates(false)
, m_autoPickPivotAtCenter(true)
, m_ignoreMouseReleaseEvent(false)
, m_rotationAxisLocked(false)
, m_lockedRotationAxis(0, 0, 1)
, m_texturePoolLastIndex(0)
{
//start internal timer
m_timer.start();
#ifdef CC_GL_WINDOW_USE_QWINDOW
setSurfaceType(QWindow::OpenGLSurface);
m_format = format ? *format : requestedFormat();
#else
if (format)
{
setFormat(*format);
}
#endif
//GL window title
setWindowTitle(QString("3D View %1").arg(m_uniqueID));
//GL window own DB
m_winDBRoot = new ccHObject(QString("DB.3DView_%1").arg(m_uniqueID));
//lights
m_sunLightEnabled = true;
m_sunLightPos[0] = 0.0f;
m_sunLightPos[1] = 0.0f;
m_sunLightPos[2] = 1.0f;
m_sunLightPos[3] = 0.0f;
m_customLightEnabled = false;
m_customLightPos[0] = 0.0f;
m_customLightPos[1] = 0.0f;
m_customLightPos[2] = 0.0f;
m_customLightPos[3] = 1.0f; //positional light
//matrices
m_viewMatd.toIdentity();
m_projMatd.toIdentity();
//default modes
setPickingMode(DEFAULT_PICKING);
setInteractionMode(MODE_TRANSFORM_CAMERA);
#ifndef CC_GL_WINDOW_USE_QWINDOW
//drag & drop handling
setAcceptDrops(true);
#endif
//auto-load previous perspective settings
{
QSettings settings;
settings.beginGroup(c_ps_groupName);
//load parameters
bool perspectiveView = settings.value(c_ps_perspectiveView, false).toBool();
//DGM: we force object-centered view by default now, as the viewer-based perspective is too dependent
//on what is displayed (so restoring this parameter at next startup is rarely a good idea)
bool objectCenteredView = /*settings.value(c_ps_objectMode, true).toBool()*/true;
m_sunLightEnabled = settings.value(c_ps_sunLight, true).toBool();
m_customLightEnabled = settings.value(c_ps_customLight, false).toBool();
int pivotVisibility = settings.value(c_ps_pivotVisibility, PIVOT_SHOW_ON_MOVE).toInt();
int glassType = settings.value(c_ps_stereoGlassType, ccGLWindow::StereoParams::RED_BLUE).toInt();
settings.endGroup();
//update stereo parameters
m_stereoParams.glassType = static_cast<ccGLWindow::StereoParams::GlassType>(glassType);
//report current perspective
if (!m_silentInitialization)
{
if (!perspectiveView)
ccLog::Print("[ccGLWindow] Perspective is off by default");
else
ccLog::Print(QString("[ccGLWindow] Perspective is on by default (%1)").arg(objectCenteredView ? "object-centered" : "viewer-centered"));
}
//pivot visibility
switch (pivotVisibility)
{
case PIVOT_HIDE:
setPivotVisibility(PIVOT_HIDE);
break;
case PIVOT_SHOW_ON_MOVE:
setPivotVisibility(PIVOT_SHOW_ON_MOVE);
break;
case PIVOT_ALWAYS_SHOW:
setPivotVisibility(PIVOT_ALWAYS_SHOW);
break;
}
//apply saved parameters
setPerspectiveState(perspectiveView, objectCenteredView);
if (m_customLightEnabled)
displayNewMessage("Warning: custom light is ON", ccGLWindow::LOWER_LEFT_MESSAGE, false, 2, CUSTOM_LIGHT_STATE_MESSAGE);
if (!m_sunLightEnabled)
displayNewMessage("Warning: sun light is OFF", ccGLWindow::LOWER_LEFT_MESSAGE, false, 2, SUN_LIGHT_STATE_MESSAGE);
}
m_deferredPickingTimer.setSingleShot(true);
m_deferredPickingTimer.setInterval(100);
//signal/slot connections
connect(this, &ccGLWindow::itemPickedFast, this, &ccGLWindow::onItemPickedFast, Qt::DirectConnection);
connect(&m_scheduleTimer, &QTimer::timeout, this, &ccGLWindow::checkScheduledRedraw);
connect(&m_autoRefreshTimer, &QTimer::timeout, this, [=] () { update(); });
connect(&m_deferredPickingTimer, &QTimer::timeout, this, &ccGLWindow::doPicking);
#ifndef CC_GL_WINDOW_USE_QWINDOW
setAcceptDrops(true);
setAttribute(Qt::WA_AcceptTouchEvents, true);
setAttribute(Qt::WA_OpaquePaintEvent, true);
#endif
}
ccGLWindow::~ccGLWindow()
{
cancelScheduledRedraw();
//disable the stereo mode (mainly to release the Oculus FBO ;)
disableStereoMode();
//we must unlink entities currently linked to this window
if (m_globalDBRoot)
{
m_globalDBRoot->removeFromDisplay_recursive(this);
}
if (m_winDBRoot)
{
m_winDBRoot->removeFromDisplay_recursive(this);
}
delete m_winDBRoot;
m_winDBRoot = nullptr;
delete m_rectPickingPoly;
m_rectPickingPoly = nullptr;
delete m_activeGLFilter;
m_activeGLFilter = nullptr;
delete m_colorRampShader;
m_colorRampShader = nullptr;
delete m_customRenderingShader;
m_customRenderingShader = nullptr;
delete m_activeShader;
m_activeShader = nullptr;
delete m_fbo;
m_fbo = nullptr;
delete m_fbo2;
m_fbo2 = nullptr;
#ifdef CC_GL_WINDOW_USE_QWINDOW
if (m_context)
m_context->doneCurrent();
delete m_device;
m_device = nullptr;
#endif
m_pickingPBO.release();
delete m_hotZone;
m_hotZone = nullptr;
}
#ifdef CC_GL_WINDOW_USE_QWINDOW
void ccGLWindow::setParentWidget(QWidget* widget)
{
m_parentWidget = widget;
if (widget)
{
//drag & drop handling
widget->setAcceptDrops(true);
widget->setAttribute(Qt::WA_AcceptTouchEvents, true);
widget->setAttribute(Qt::WA_OpaquePaintEvent, true);
}
}
#endif
void ccGLWindow::makeCurrent()
{
#ifdef CC_GL_WINDOW_USE_QWINDOW
if (m_context)
{
m_context->makeCurrent(this);
}
#else
QOpenGLWidget::makeCurrent();
#endif
if (m_activeFbo)
{
m_activeFbo->start();
}
}
bool ccGLWindow::bindFBO(ccFrameBufferObject* fbo)
{
if (fbo) //bind
{
if (fbo->start())
{
m_activeFbo = fbo;
return true;
}
else
{
//failed to start the FBO?!
m_activeFbo = nullptr;
return false;
}
}
else //unbind
{
m_activeFbo = nullptr;
assert(m_glExtFuncSupported);
//we automatically enable the QOpenGLWidget's default FBO
m_glExtFunc.glBindFramebuffer(GL_FRAMEBUFFER_EXT, defaultQtFBO());
return true;
}
}
void ccGLWindow::setInteractionMode(INTERACTION_FLAGS flags)
{
m_interactionFlags = flags;
//we need to explicitely enable 'mouse tracking' to track the mouse when no button is clicked
#ifdef CC_GL_WINDOW_USE_QWINDOW
if (m_parentWidget)
{
m_parentWidget->setMouseTracking(flags & (INTERACT_CLICKABLE_ITEMS | INTERACT_SIG_MOUSE_MOVED));
}
#else
setMouseTracking(flags & (INTERACT_CLICKABLE_ITEMS | INTERACT_SIG_MOUSE_MOVED));
#endif
if ((flags & INTERACT_CLICKABLE_ITEMS) == 0)
{
//auto-hide the embedded icons if they are disabled
m_clickableItemsVisible = false;
}
}
const ccGui::ParamStruct& ccGLWindow::getDisplayParameters() const
{
return m_overridenDisplayParametersEnabled ? m_overridenDisplayParameters : ccGui::Parameters();
}
void ccGLWindow::setDisplayParameters(const ccGui::ParamStruct ¶ms, bool thisWindowOnly)
{
if (thisWindowOnly)
{
m_overridenDisplayParametersEnabled = true;
m_overridenDisplayParameters = params;
}
else
{
m_overridenDisplayParametersEnabled = false;
ccGui::Set(params);
}
}
void ccGLWindow::handleLoggedMessage(const QOpenGLDebugMessage& message)
{
//Decode severity
QString sevStr;
switch (message.severity())
{
case QOpenGLDebugMessage::HighSeverity:
sevStr = "high";
break;
case QOpenGLDebugMessage::MediumSeverity:
sevStr = "medium";
break;
case QOpenGLDebugMessage::LowSeverity:
sevStr = "low";
return; //don't care about them! they flood the console in Debug mode :(
case QOpenGLDebugMessage::NotificationSeverity:
default:
sevStr = "notification";
break;
}
//Decode source
QString sourceStr;
switch (message.source())
{
case QOpenGLDebugMessage::APISource:
sourceStr = "API";
break;
case QOpenGLDebugMessage::WindowSystemSource:
sourceStr = "window system";
break;
case QOpenGLDebugMessage::ShaderCompilerSource:
sourceStr = "shader compiler";
break;
case QOpenGLDebugMessage::ThirdPartySource:
sourceStr = "third party";
break;
case QOpenGLDebugMessage::ApplicationSource:
sourceStr = "application";
break;
case QOpenGLDebugMessage::OtherSource:
default:
sourceStr = "other";
break;
}
//Decode type
QString typeStr;
switch (message.type())
{
case QOpenGLDebugMessage::ErrorType:
typeStr = "error";
break;
case QOpenGLDebugMessage::DeprecatedBehaviorType:
typeStr = "deprecated behavior";
break;
case QOpenGLDebugMessage::UndefinedBehaviorType:
typeStr = "undefined behavior";
break;
case QOpenGLDebugMessage::PortabilityType:
typeStr = "portability";
break;
case QOpenGLDebugMessage::PerformanceType:
typeStr = "performance";
break;
case QOpenGLDebugMessage::OtherType:
default:
typeStr = "other";
break;
case QOpenGLDebugMessage::MarkerType:
typeStr = "marker";
break;
}
QString msg = QString("[OpenGL][Win %0]").arg(getUniqueID());
msg += "[source: " + sourceStr + "]";
msg += "[type: " + typeStr + "]";
msg += "[severity: " + sevStr + "]";
msg += " ";
msg += message.message();
if (message.severity() != QOpenGLDebugMessage::NotificationSeverity)
ccLog::Warning(msg);
else
ccLog::Print(msg);
}
bool ccGLWindow::initialize()
{
#ifdef CC_GL_WINDOW_USE_QWINDOW
bool firstTime = false;
if (!m_context)
{
m_context = new QOpenGLContext(this);
m_context->setFormat(m_format);
m_context->setShareContext(QOpenGLContext::globalShareContext());
if (!m_context->create())
{
ccLog::Error("Failed to create the OpenGL context");
return false;
}
firstTime = true;
}
else if (!m_context->isValid())
{
return false;
}
m_context->makeCurrent(this);
#endif
ccQOpenGLFunctions* glFunc = functions();
assert(glFunc);
//initialize can be called again when switching to exclusive full screen!
if (!m_initialized)
{
if (!glFunc->initializeOpenGLFunctions()) //DGM: seems to be necessary at least with Qt 5.4
{
assert(false);
return false;
}
//we init the model view and projection matrices with identity
m_viewMatd.toIdentity();
m_projMatd.toIdentity();
//we init the OpenGL ones with the same values
glFunc->glMatrixMode(GL_MODELVIEW);
glFunc->glLoadIdentity();
glFunc->glMatrixMode(GL_PROJECTION);
glFunc->glLoadIdentity();
//we emit the 'baseViewMatChanged' signal
emit baseViewMatChanged(m_viewportParams.viewMat);
//set viewport and visu. as invalid
invalidateViewport();
invalidateVisualization();
deprecate3DLayer();
//FBO support (TODO: catch error?)
m_glExtFuncSupported = m_glExtFunc.initializeOpenGLFunctions();
//OpenGL version
const char* vendorName = reinterpret_cast<const char*>(glFunc->glGetString(GL_VENDOR));
const QString vendorNameStr = QString(vendorName).toUpper();
if (!m_silentInitialization)
{
ccLog::Print("[3D View %i] Graphics card manufacturer: %s", m_uniqueID, vendorName);
ccLog::Print("[3D View %i] Renderer: %s", m_uniqueID, glFunc->glGetString(GL_RENDERER));
ccLog::Print("[3D View %i] GL version: %s", m_uniqueID, glFunc->glGetString(GL_VERSION));
ccLog::Print("[3D View %i] GLSL Version: %s", m_uniqueID, glFunc->glGetString(GL_SHADING_LANGUAGE_VERSION));
}
ccGui::ParamStruct params = getDisplayParameters();
//VBO support
if (context()->hasExtension(QByteArrayLiteral("GL_ARB_vertex_buffer_object")))
{
QStringList glVersion = QString((const char*)glFunc->glGetString(GL_VERSION)).split('.');
int majorVersion = 0;
int minorVersion = 0;
if (glVersion.size() >= 2)
{
majorVersion = glVersion[0].toInt();
minorVersion = glVersion[1].toInt();
}
else
{
assert(false);
}
if (params.useVBOs && (!vendorName || (vendorNameStr.startsWith("ATI") && (majorVersion < 4 || (majorVersion == 4 && minorVersion < 6))))) //only if OpenGL version is earlier than 4.6
{
if (!m_silentInitialization)
ccLog::Warning("[3D View %i] VBO support has been disabled as it may not work on %s cards!\nYou can manually activate it in the display settings (at your own risk!)", m_uniqueID, vendorName);
params.useVBOs = false;
}
else if (!m_silentInitialization)
{
ccLog::Print("[3D View %i] VBOs available", m_uniqueID);
}
}
else
{
params.useVBOs = false;
}
//Shaders and other OpenGL extensions
m_shadersEnabled = context()->hasExtension(QByteArrayLiteral("GL_ARB_shading_language_100"))
&& context()->hasExtension(QByteArrayLiteral("GL_ARB_shader_objects"))
&& context()->hasExtension(QByteArrayLiteral("GL_ARB_vertex_shader"))
&& context()->hasExtension(QByteArrayLiteral("GL_ARB_fragment_shader"));
if (!m_shadersEnabled)
{
//if no shader, no GL filter!
if (!m_silentInitialization)
ccLog::Warning("[3D View %i] Shaders and GL filters unavailable", m_uniqueID);
}
else
{
if (!m_silentInitialization)
ccLog::Print("[3D View %i] Shaders available", m_uniqueID);
m_glFiltersEnabled = context()->hasExtension(QByteArrayLiteral("GL_EXT_framebuffer_object"));
if (m_glFiltersEnabled)
{
if (!m_silentInitialization)
ccLog::Print("[3D View %i] GL filters available", m_uniqueID);
m_alwaysUseFBO = true;
}
else if (!m_silentInitialization)
{
ccLog::Warning("[3D View %i] GL filters unavailable (FBO not supported)", m_uniqueID);
}
//color ramp shader
if (!m_colorRampShader)
{
//we will update global parameters
params.colorScaleShaderSupported = false;
GLint maxBytes = 0;
glFunc->glGetIntegerv(GL_MAX_FRAGMENT_UNIFORM_COMPONENTS, &maxBytes);
const GLint minRequiredBytes = ccColorRampShader::MinRequiredBytes();
if (maxBytes < minRequiredBytes)
{
if (!m_silentInitialization)
ccLog::Warning("[3D View %i] Not enough memory on shader side to use color ramp shader! (max=%i/%i bytes)", m_uniqueID, maxBytes, minRequiredBytes);
}
else
{
ccColorRampShader* colorRampShader = new ccColorRampShader();
QString error;
const QString shaderPath = QStringLiteral( "%1/ColorRamp/color_ramp.frag" ).arg( *s_shaderPath );
if (!colorRampShader->loadProgram(QString(), shaderPath, error))
{
if (!m_silentInitialization)
ccLog::Warning(QString("[3D View %1] Failed to load color ramp shader: '%2'").arg(m_uniqueID).arg(error));
delete colorRampShader;
colorRampShader = nullptr;
}
else
{
if (!m_silentInitialization)
ccLog::Print("[3D View %i] Color ramp shader loaded successfully", m_uniqueID);
m_colorRampShader = colorRampShader;
params.colorScaleShaderSupported = true;
//if global parameter is not yet defined
if (!getDisplayParameters().isInPersistentSettings("colorScaleUseShader"))
{
bool shouldUseShader = true;
if (!vendorName || vendorNameStr.startsWith("ATI") || vendorNameStr.startsWith("VMWARE"))
{
if (!m_silentInitialization)
{
ccLog::Warning("[3D View %i] Color ramp shader will remain disabled as it may not work on %s cards!\nYou can manually activate it in the display settings (at your own risk!)", m_uniqueID, vendorName);
}
shouldUseShader = false;
}
params.colorScaleUseShader = shouldUseShader;
}
}
}
}
//stereo mode
if (!m_silentInitialization)
{
GLboolean isStereoEnabled = 0;
glFunc->glGetBooleanv(GL_STEREO, &isStereoEnabled);
ccLog::Print(QString("[3D View %1] Stereo mode: %2").arg(m_uniqueID).arg(isStereoEnabled ? "supported" : "not supported"));
}
}
#ifdef QT_DEBUG
//KHR extension (debug)
if (context()->hasExtension(QByteArrayLiteral("GL_KHR_debug")))
{
if (!m_silentInitialization)
ccLog::Print("[3D View %i] GL KHR (debug) extension available", m_uniqueID);
QOpenGLDebugLogger* logger = new QOpenGLDebugLogger(this);
logger->initialize();
connect(logger, &QOpenGLDebugLogger::messageLogged, this, &ccGLWindow::handleLoggedMessage);
logger->enableMessages();
logger->disableMessages(QOpenGLDebugMessage::AnySource,
QOpenGLDebugMessage::DeprecatedBehaviorType
| QOpenGLDebugMessage::PortabilityType
| QOpenGLDebugMessage::PerformanceType
| QOpenGLDebugMessage::OtherType);
logger->startLogging(QOpenGLDebugLogger::SynchronousLogging);
}
#endif
//apply (potentially) updated parameters;
setDisplayParameters(params, hasOverridenDisplayParameters());
#if 0
//OpenGL 3.3+ rendering shader
if ( QGLFormat::openGLVersionFlags() & QGLFormat::OpenGL_Version_3_3 )
{
bool vaEnabled = ccFBOUtils::CheckVAAvailability();
if (vaEnabled && !m_customRenderingShader)
{
ccGui::ParamStruct params = getDisplayParameters();
ccShader* renderingShader = new ccShader();
QString shadersPath = ccGLWindow::getShadersPath();
QString error;
if (!renderingShader->fromFile(shadersPath+QString("/Rendering"),QString("rendering"),error))
{
if (!m_silentInitialization)
ccLog::Warning(QString("[3D View %i] Failed to load custom rendering shader: '%2'").arg(m_uniqueID).arg(error));
delete renderingShader;
renderingShader = nullptr;
}
else
{
m_customRenderingShader = renderingShader;
}
setDisplayParameters(params,hasOverridenDisplayParameters());
}
}
#endif
if (!m_silentInitialization)