void GL3DShaderWidget::paintGL()
{
// If it's not yet visible don't try and draw (you can upset OpenGL on some systems if you do)
if(!isVisible()) return;
CG_GL_ERROR_CHECK
// Make sure this OpenGL context is current
#ifdef GLCONTEXT_DEBUG
fprintf(stderr, "Making current (%s:%d)\n", __FILE__, __LINE__);
fflush(stderr);
#endif
makeGLContextCurrent();
CG_GL_ERROR_CHECK
// Clear the buffer
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
CG_GL_ERROR_CHECK
// Allow special processing before drawContents() (implement in child)
// Note: buffer clears before but not after, shader is not bound
if(mShader != NULL) mShader->release();
CG_GL_ERROR_CHECK
prePaint();
CG_GL_ERROR_CHECK
// Bind the shader and draw the maincontents
if(mShader != NULL) mShader->bind();
else glColor4f(0.0, 0.0, 0.0, 1.0);
drawContents();
CG_GL_ERROR_CHECK
// Allow special procesing after drawContents() but before buffer swap (implement in child)
// Note: shader is not bound
if(mShader != NULL) mShader->release();
postPaintPreSwap();
CG_GL_ERROR_CHECK
// Swap back and front buffers
// NO! Qt does this automatically and doing it manually will cause a
// double swap on some OSs and seisure inducing flashing.
// swapBuffers();
}
void Thumbnail::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget *widget)
{
QRectF parentRect = parentItem()->sceneBoundingRect();
// Skip drawing thumbnails outside their parents
if (!sceneBoundingRect().intersects(parentRect)) return;
prePaint(painter, widget);
// Draw image
if(!img.isNull())
{
auto imgRect = QRectF(img.rect());
imgRect.moveCenter(rect.center());
painter->drawImage(imgRect.topLeft(), img);
}
// Draw 3D mesh
if(mesh.points.size() || auxMeshes.size())
{
if (img.isNull() || isTempImage)
{
auto glwidget = (Viewer*)widget;
if (glwidget)
{
QOpenGLContext context;
context.setShareContext(glwidget->context());
context.setFormat(glwidget->format());
context.create();
QOffscreenSurface m_offscreenSurface;
m_offscreenSurface.setFormat(context.format());
m_offscreenSurface.create();
context.makeCurrent(&m_offscreenSurface);
QOpenGLFramebufferObjectFormat fboformat;
fboformat.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
QOpenGLFramebufferObject renderFbo(rect.width() * 2, rect.height() * 2, fboformat);
renderFbo.bind();
glwidget->glEnable(GL_DEPTH_TEST);
glwidget->glEnable(GL_BLEND);
glwidget->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glwidget->glCullFace(GL_BACK);
glwidget->glClearColor(0,0,0,0);
glwidget->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glwidget->glViewport(0, 0, renderFbo.size().width(), renderFbo.size().height());
if(mesh.points.size())
glwidget->drawTriangles(mesh.color, mesh.points, mesh.normals, pvm);
// Draw aux meshes
for (auto auxmesh : auxMeshes)
glwidget->drawTriangles(auxmesh.color, auxmesh.points, auxmesh.normals, pvm);
glwidget->glDisable(GL_DEPTH_TEST);
glwidget->glFlush();
renderFbo.release();
this->setImage( renderFbo.toImage().scaledToWidth(rect.width(), Qt::SmoothTransformation) );
// Thanks for sharing!
glwidget->makeCurrent();
}
/*painter->beginNativePainting();
auto glwidget = (Viewer*)widget;
if (glwidget)
{
// Draw mesh
auto r = sceneBoundingRect();
auto v = scene()->views().first();
QPoint viewDelta = v->mapFromScene(r.topLeft());
if (viewDelta.manhattanLength() > 5) r.moveTopLeft(viewDelta);
glwidget->eyePos = eye;
glwidget->pvm = pvm;
glwidget->glViewport(r.left(), v->height() - r.height() - r.top(), r.width(), r.height());
// Clipping OpenGL
glwidget->glEnable(GL_SCISSOR_TEST);
glwidget->glScissor(parentRect.x(), v->height() - parentRect.height() - parentRect.top(), parentRect.width(), parentRect.height());
glwidget->glClear(GL_DEPTH_BUFFER_BIT);
glwidget->drawTriangles(mesh.color, mesh.points, mesh.normals, pvm);
// Draw aux meshes
for (auto auxmesh : auxMeshes)
{
glwidget->drawTriangles(auxmesh.color, auxmesh.points, auxmesh.normals, pvm);
}
glwidget->glDisable(GL_SCISSOR_TEST);
}
painter->endNativePainting();*/
}
}
// Draw the caption
if(caption.size())
{
painter->setPen(QPen(Qt::white,1));
auto textRect = rect;
textRect.setHeight(painter->fontMetrics().height() * 1.25);
textRect.moveBottom(rect.height() - textRect.height() * 0.5);
painter->drawText(textRect, caption, Qt::AlignVCenter | Qt::AlignHCenter);
}
postPaint(painter, widget);
}
void ExploreLiveView::paint(QPainter *painter, const QStyleOptionGraphicsItem *, QWidget * widget)
{
if(!isReady) return;
prePaint(painter);
postPaint(painter);
auto glwidget = (Viewer*)widget;
if (glwidget && meshes.size())
{
QRectF parentRect = parentItem()->sceneBoundingRect();
if (isCacheImage && cachedImage.isNull())
{
QOpenGLContext context;
context.setShareContext(glwidget->context());
context.setFormat(glwidget->format());
context.create();
QOffscreenSurface m_offscreenSurface;
m_offscreenSurface.setFormat(context.format());
m_offscreenSurface.create();
context.makeCurrent(&m_offscreenSurface);
QOpenGLFramebufferObjectFormat fboformat;
fboformat.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
QOpenGLFramebufferObject renderFbo(cacheImageSize*1.5, cacheImageSize, fboformat);
renderFbo.bind();
glwidget->glEnable(GL_DEPTH_TEST);
glwidget->glEnable(GL_BLEND);
glwidget->glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glwidget->glCullFace(GL_BACK);
glwidget->glClearColor(0,0,0,0);
glwidget->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glwidget->glViewport(0, 0, cacheImageSize*1.5, cacheImageSize);
// XXX Fix
// glwidget->glPointSize(10);
// Draw aux meshes
for (auto mesh : meshes)
{
if (mesh.isPoints)
glwidget->drawOrientedPoints(mesh.points, mesh.normals, mesh.color, glwidget->pvm);
else
glwidget->drawTriangles(mesh.color, mesh.points, mesh.normals, glwidget->pvm);
}
glwidget->glDisable(GL_DEPTH_TEST);
glwidget->glFlush();
renderFbo.release();
cachedImage = renderFbo.toImage();
isReady = true;
// Thanks for sharing!
glwidget->makeCurrent();
}
// Draw as image
if(isCacheImage)
{
int w = shapeRect.width();
painter->drawImage(w * -0.5, w * -0.5, cachedImage.scaledToWidth(w));
}
if(!isCacheImage)
{
auto r = shapeRect;
// scale view
double s = 1.5;
r.setWidth(r.width() * s);
r.setHeight(r.height() * s);
r.moveCenter(this->mapToScene(boundingRect().center()));
painter->beginNativePainting();
auto v = scene()->views().first();
QPoint viewDelta = v->mapFromScene(r.topLeft());
if (viewDelta.manhattanLength() > 5) r.moveTopLeft(viewDelta);
auto camera = ExploreProcess::defaultCamera(document->extent().length());
glwidget->eyePos = camera.first;
glwidget->pvm = camera.second;
glwidget->glViewport(r.left(), v->height() - r.height() - r.top(), r.width(), r.height());
// Clipping OpenGL
glwidget->glEnable(GL_SCISSOR_TEST);
glwidget->glScissor(parentRect.x(), v->height() - parentRect.height() - parentRect.top(), parentRect.width(), parentRect.height());
glwidget->glClear(GL_DEPTH_BUFFER_BIT);
// FIX XXX
// glwidget->glPointSize(2);
// Draw aux meshes
for (auto mesh : meshes)
{
if (mesh.isPoints)
glwidget->drawOrientedPoints(mesh.points, mesh.normals, mesh.color, glwidget->pvm);
else
glwidget->drawTriangles(mesh.color, mesh.points, mesh.normals, glwidget->pvm);
}
glwidget->glDisable(GL_SCISSOR_TEST);
painter->endNativePainting();
}
}
}
