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0025893: Visualization, TKOpenGl - do not use uninitialized memory to track Clipping Planes state

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This commit is contained in:
isk 2015-04-07 11:14:57 +03:00 committed by bugmaster
parent 3186aee9b6
commit 42f8ba5632
1 changed files with 5 additions and 45 deletions
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50
src/OpenGl/OpenGl_View_2.cxx
View File

@ -54,15 +54,6 @@ namespace
extern void InitLayerProp (const int theListId); //szvgl: defined in OpenGl_GraphicDriver_Layer.cxx
/*----------------------------------------------------------------------*/
struct OPENGL_CLIP_PLANE
{
GLboolean isEnabled;
GLdouble Equation[4];
DEFINE_STANDARD_ALLOC
};
/*----------------------------------------------------------------------*/
/*
* Fonctions privees
@ -265,24 +256,13 @@ void OpenGl_View::Render (const Handle(OpenGl_PrinterContext)& thePrintContext,
const Handle(OpenGl_Context)& aContext = theWorkspace->GetGlContext();
#if !defined(GL_ES_VERSION_2_0)
// store and disable current clipping planes
const Standard_Integer aMaxPlanes = aContext->MaxClipPlanes();
NCollection_Array1<OPENGL_CLIP_PLANE> aOldPlanes (GL_CLIP_PLANE0, GL_CLIP_PLANE0 + aMaxPlanes - 1);
// Disable current clipping planes
if (aContext->core11 != NULL)
{
for (Standard_Integer aClipPlaneId = aOldPlanes.Lower(); aClipPlaneId <= aOldPlanes.Upper(); ++aClipPlaneId)
const Standard_Integer aMaxPlanes = aContext->MaxClipPlanes();
for (Standard_Integer aClipPlaneId = GL_CLIP_PLANE0; aClipPlaneId < GL_CLIP_PLANE0 + aMaxPlanes; ++aClipPlaneId)
{
OPENGL_CLIP_PLANE& aPlane = aOldPlanes.ChangeValue (aClipPlaneId);
aContext->core11->glGetClipPlane (aClipPlaneId, aPlane.Equation);
if (aPlane.isEnabled)
{
aContext->core11fwd->glDisable (aClipPlaneId);
aPlane.isEnabled = GL_TRUE;
}
else
{
aPlane.isEnabled = GL_FALSE;
}
aContext->core11fwd->glDisable (aClipPlaneId);
}
}
#endif
@ -543,28 +523,8 @@ void OpenGl_View::Render (const Handle(OpenGl_PrinterContext)& thePrintContext,
theWorkspace->DisplayCallback (theCView, aMode);
}
// ===============================
// Step 7: Finalize
// ===============================
#if !defined(GL_ES_VERSION_2_0)
// restore clipping planes
if (aContext->core11 != NULL)
{
for (Standard_Integer aClipPlaneId = aOldPlanes.Lower(); aClipPlaneId <= aOldPlanes.Upper(); ++aClipPlaneId)
{
const OPENGL_CLIP_PLANE& aPlane = aOldPlanes.ChangeValue (aClipPlaneId);
aContext->core11->glClipPlane (aClipPlaneId, aPlane.Equation);
if (aPlane.isEnabled)
aContext->core11fwd->glEnable (aClipPlaneId);
else
aContext->core11fwd->glDisable (aClipPlaneId);
}
}
#endif
// ==============================================================
// Step 8: Keep shader manager informed about last View
// Step 7: Keep shader manager informed about last View
// ==============================================================
if (!aManager.IsNull())