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0030931: Visualization, TKOpenGl - do not render into GL_FRONT within "GDI Generic" renderer

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OpenGl_Workspace now disables at initialization time
OpenGl_View::SetImmediateModeDrawToFront() property in case of "GDI Generic" OpenGL implementation.

OpenGl_View::redrawImmediate() - fixed no buffer swap in case of
myTransientDrawToFront without offscreen FBO.
This commit is contained in:
kgv 2019-09-01 13:19:40 +03:00 committed by apn
parent 59ee34efc0
commit 1202160b57
2 changed files with 8 additions and 1 deletions
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3
src/OpenGl/OpenGl_View_Redraw.cxx
View File

@ -817,7 +817,7 @@ bool OpenGl_View::redrawImmediate (const Graphic3d_Camera::Projection theProject
OpenGl_FrameBuffer* theOitAccumFbo,
const Standard_Boolean theIsPartialUpdate)
{
Handle(OpenGl_Context) aCtx = myWorkspace->GetGlContext();
const Handle(OpenGl_Context)& aCtx = myWorkspace->GetGlContext();
GLboolean toCopyBackToFront = GL_FALSE;
if (theDrawFbo == theReadFbo
&& theDrawFbo != NULL)
@ -855,6 +855,7 @@ bool OpenGl_View::redrawImmediate (const Graphic3d_Camera::Projection theProject
}
else
{
toCopyBackToFront = GL_FALSE;
myBackBufferRestored = Standard_False;
}
}

6
src/OpenGl/OpenGl_Workspace.cxx
View File

@ -146,6 +146,12 @@ OpenGl_Workspace::OpenGl_Workspace (OpenGl_View* theView, const Handle(OpenGl_Wi
glHint (GL_LINE_SMOOTH_HINT, GL_FASTEST);
glHint (GL_POLYGON_SMOOTH_HINT, GL_FASTEST);
if (myGlContext->Vendor() == "microsoft corporation"
&& !myGlContext->IsGlGreaterEqual (1, 2))
{
// this software implementation causes too slow rendering into GL_FRONT on modern Windows
theView->SetImmediateModeDrawToFront (false);
}
#endif
}