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[histpainter] do not show TH3 projection with GL [6.40] #23290

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[histpainter] do not show TH3 projection with GL [6.40] #23290

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13 changes: 13 additions & 0 deletions hist/histpainter/src/THistPainter.cxx
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Original file line number Diff line number Diff line change
Expand Up @@ -10895,6 +10895,11 @@ void THistPainter::SetShowProjection(const char *option,Int_t nbins)

if (nbins <= 0) return;

if ((fH->GetDimension() == 3) && (gPad->GetGLDevice() != -1)) {
Error("SetShowProjection", "TH3 projections do not work in GL mode");
return;
}

TString opt = option;
opt.ToLower();
Int_t projection = 0;
Expand Down Expand Up @@ -10933,6 +10938,10 @@ void THistPainter::SetShowProjectionXY(const char *option,Int_t nbinsY,Int_t nbi

if ((nbinsX <= 0) || (nbinsY <= 0)) return;

if ((fH->GetDimension() == 3) && (gPad->GetGLDevice() != -1)) {
Error("SetShowProjection", "TH3 projections do not work in GL mode");
return;
}

TString opt = option;
opt.ToLower();
Expand Down Expand Up @@ -11156,6 +11165,10 @@ void THistPainter::ShowProjection3(Int_t px, Int_t py)
}
}

// 3D protection does not work with GL painters
if (gPad->GetGLDevice() != -1)
return;

gPad->SetDoubleBuffer(0); // turn off double buffer mode
gVirtualX->SetDrawMode(TVirtualX::kInvert); // set the drawing mode to XOR mode

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