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@@ -18,6 +18,7 @@ type Renderer struct {
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gs *gls.GLS
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shaman Shaman // Internal shader manager
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stats Stats // Renderer statistics
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+ prevStats Stats // Renderer statistics for previous frame
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scene core.INode // Node containing 3D scene to render
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panelGui gui.IPanel // Panel containing GUI to render
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panel3D gui.IPanel // Panel which contains the 3D scene
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@@ -237,8 +238,9 @@ func (r *Renderer) renderScene(iscene core.INode, icam camera.ICamera) error {
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r.stats.Others++
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}
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- // If there is graphic material to render
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- if len(r.grmats) > 0 {
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+ // If there is graphic material to render or there was in the previous frame
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+ // it is necessary to clear the screen.
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+ if len(r.grmats) > 0 || r.prevStats.Graphics > 0 {
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// If the 3D scene to draw is to be confined to user specified panel
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// sets scissor to avoid erasing gui elements outside of this panel
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if r.panel3D != nil {
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@@ -292,6 +294,7 @@ func (r *Renderer) renderScene(iscene core.INode, icam camera.ICamera) error {
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grmat.Render(r.gs, &r.rinfo)
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r.stats.Graphics++
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}
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+ r.prevStats = r.stats
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return nil
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}
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leonsal