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0024307: TKOpenGl - efficient culling of large number of presentations

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Implement SAT intersection tests and frustum culling algorithm using BVH trees.

New Draw command vfrustumculling to manage frustum culling.
Add test cases bugs/vis/bug24307_1 and bugs/vis/bug24307_2.
Remove CALL_DEF_BOUNDBOX and CALL_DEF_BOUNDS.
This commit is contained in:
vpa
2014-06-20 11:26:14 +04:00
committed by apn
parent c1c1aefa71
commit b7cd4ba795
53 changed files with 1885 additions and 538 deletions
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38
src/OpenGl/OpenGl_View_2.cxx
View File

@@ -383,6 +383,19 @@ void OpenGl_View::Render (const Handle(OpenGl_PrinterContext)& thePrintContext,
}
}
Standard_Boolean isProjectionMatUpdateNeeded = Standard_False;
Standard_Boolean isOrientationMatUpdateNeeded = Standard_False;
if (myBVHSelector.ProjectionState() != myCamera->ProjectionState())
{
isProjectionMatUpdateNeeded = Standard_True;
myBVHSelector.ChangeProjectionState() = myCamera->ProjectionState();
}
if (myBVHSelector.ModelViewState() != myCamera->ModelViewState())
{
isOrientationMatUpdateNeeded = Standard_True;
myBVHSelector.ChangeModelViewState() = myCamera->ModelViewState();
}
// Set OCCT state uniform variables
const Handle(OpenGl_ShaderManager) aManager = aContext->ShaderManager();
if (!aManager->IsEmpty())
@@ -429,6 +442,12 @@ void OpenGl_View::Render (const Handle(OpenGl_PrinterContext)& thePrintContext,
}
}
if (isProjectionMatUpdateNeeded
|| isOrientationMatUpdateNeeded)
{
myBVHSelector.SetViewVolume (myCamera);
}
// ====================================
// Step 2: Redraw background
// ====================================
@@ -643,6 +662,15 @@ void OpenGl_View::Render (const Handle(OpenGl_PrinterContext)& thePrintContext,
}
}
// =======================================================================
// function : InvalidateBVHData
// purpose :
// =======================================================================
void OpenGl_View::InvalidateBVHData (const Standard_Integer theLayerId)
{
myZLayers.InvalidateBVHData (theLayerId);
}
/*----------------------------------------------------------------------*/
//ExecuteViewDisplay
@@ -1033,6 +1061,16 @@ void OpenGl_View::SetZLayerSettings (const Standard_Integer theLayerId,
myZLayers.Layer (theLayerId).SetLayerSettings (theSettings);
}
//=======================================================================
//function : ChangePriority
//purpose :
//=======================================================================
void OpenGl_View::ChangePriority (const OpenGl_Structure *theStructure,
const Standard_Integer theNewPriority)
{
Standard_Integer aLayerId = theStructure->GetZLayer();
myZLayers.ChangePriority (theStructure, aLayerId, theNewPriority);
}
//=======================================================================
//function : RedrawScene