Hello,
I tried to add some code for opengl vbo creation inside my qt plugin.
I initialize vbo buffer inside the plugin and after it my program crash in
rendering vbo method on one glBindBuffer call.
this function is called when plugin start and after it my application crash on
a rendering method while
render the tooth node just created.
bool testPlugin::StartEdit(RenderNode & r, GLArea *gla )
{
connect(this,SIGNAL(createVbo()),gla,SLOT(updateVbo()));
RenderNode * meshNode=new Tooth("test",&r);
MeshModel * model=new MeshModel("test.ply");
int result=vcg::tri::io::ImporterPLY::Open(model->cm,
"d:/debugMesh/save.ply", NULL);
vcg::tri::UpdateNormal::PerVertexPerFace(model->cm);
meshNode->toMeshNode()->setMeshModel(model);
r.appendChild(meshNode);
emit createVbo();
}
createVbo is a signal connected to updateVbo()
GLArea slot. GLArea is a derivate of GLWidget class.
I don't know why but if I create an external slot inside GLArea with the code
contains in
testPlugin::StartEdit function my program run correctly while if I let all the
code inside the
testPlugin::StartEdit the rendering function called in GLArea crash.
My render code is in my application (.exe) and is in a method of GLArea.
I noticed a strange behavior with debugger looking the stack call function.
When the Tooth and MeshModel object is instanced inside my plugin class the
method draw in GLArea call the draw method relative to Tooth object and
referring to plugin code.
while when Tooth and MeshModel object is instanced outside my plugin class the
draw method for the Tooth object is relative to application code (.exe). When
the tooth draw code is referred to plugin my application crash.
Tooth is subclass of MeshNode.
This is the stack call of render function when plugin code is outside from it
and it's connected
to plugin signal. Inside the plugin there is only a emit that call external vbo
initialization code.
DentalCad.exe!MeshModel::Render(vcg::GLW::DrawMode _dm=DMSmooth,
vcg::GLW::ColorMode _cm=CMPerMesh, vcg::GLW::TextureMode _tm=TMNone) Line 111
C++
DentalCad.exe!MeshNode::draw(const RenderMode & rmode={...}) Line 125 + 0x39
bytes C++
DentalCad.exe!GLArea::renderSceneGraph(RenderNode * root=0x0519b330, bool
filterTooths=false, const vcg::Color4 & colorPerMesh={...})
Line 591 C++
DentalCad.exe!GLArea::paintEvent(QPaintEvent * event=0x0035cb4c) Line 400
C++
and this is the stack call when all the code is inside the plugin (in this case
application crash!)
testPlugin.dll!vcg::GlTrimesh > >::DrawFill<1,1,0>() Line 477 C++
testPlugin.dll!vcg::GlTrimesh > >::Draw<6,1,0>() Line 433 C++
testPlugin.dll!vcg::GlTrimesh > >::Draw<6,1>(vcg::GLW::TextureMode tm=TMNone)
Line 394 + 0x8 bytes C++
testPlugin.dll!vcg::GlTrimesh > >::Draw<6>(vcg::GLW::ColorMode cm=CMPerMesh,
vcg::GLW::TextureMode tm=TMNone) Line 382 + 0xc bytes C++
testPlugin.dll!vcg::GlTrimesh > >::Draw(vcg::GLW::DrawMode dm=DMSmooth,
vcg::GLW::ColorMode cm=CMPerMesh, vcg::GLW::TextureMode tm=TMNone) Line 370 +
0x10 bytesC++
testPlugin.dll!MeshModel::Render(vcg::GLW::DrawMode _dm=DMSmooth,
vcg::GLW::ColorMode _cm=CMPerMesh, vcg::GLW::TextureMode _tm=TMNone) Line 115
C++
testPlugin.dll!MeshNode::draw(const RenderMode & rmode={...}) Line 125 + 0x39
bytesC++
DentalCad.exe!GLArea::renderSceneGraph(RenderNode * root=0x05019768, bool
filterTooths=false, const vcg::Color4 & colorPerMesh={...})
Line 591 C++
DentalCad.exe!GLArea::paintEvent(QPaintEvent * event=0x0041ca14) Line 400
C++
Thanks in advance.
Ale.
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