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0025060: Capping breaks highlighting of shaded AIS_Shape with displayed edges

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Capping algorithm - remember and restore depth function mode.
This commit is contained in:
apl 2014-07-10 13:06:13 +04:00 committed by bugmaster
parent fe9fc66996
commit 347423b2c2
2 changed files with 34 additions and 1 deletions
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8
src/OpenGl/OpenGl_CappingAlgo.cxx
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@ -103,6 +103,12 @@ void OpenGl_CappingAlgo::RenderCapping (const Handle(OpenGl_Workspace)& theWork
// prepare for rendering the clip planes // prepare for rendering the clip planes
glEnable (GL_STENCIL_TEST); glEnable (GL_STENCIL_TEST);
// remember current state of depth
// function and change its value
GLint aDepthFuncPrev;
glGetIntegerv (GL_DEPTH_FUNC, &aDepthFuncPrev);
glDepthFunc (GL_LESS);
// generate capping for every clip plane // generate capping for every clip plane
for (aCappingIt.Init (aContextPlanes); aCappingIt.More(); aCappingIt.Next()) for (aCappingIt.Init (aContextPlanes); aCappingIt.More(); aCappingIt.Next())
{ {
@ -158,7 +164,6 @@ void OpenGl_CappingAlgo::RenderCapping (const Handle(OpenGl_Workspace)& theWork
// render capping plane using the generated stencil mask // render capping plane using the generated stencil mask
glColorMask (GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE); glColorMask (GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
glDepthMask (GL_TRUE); glDepthMask (GL_TRUE);
glDepthFunc (GL_LESS);
glStencilFunc (GL_EQUAL, 1, 0x01); glStencilFunc (GL_EQUAL, 1, 0x01);
glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP); glStencilOp (GL_KEEP, GL_KEEP, GL_KEEP);
glEnable (GL_DEPTH_TEST); glEnable (GL_DEPTH_TEST);
@ -168,6 +173,7 @@ void OpenGl_CappingAlgo::RenderCapping (const Handle(OpenGl_Workspace)& theWork
// restore previous application state // restore previous application state
glClear (GL_STENCIL_BUFFER_BIT); glClear (GL_STENCIL_BUFFER_BIT);
glDepthFunc (aDepthFuncPrev);
glStencilFunc (GL_ALWAYS, 0, 0xFF); glStencilFunc (GL_ALWAYS, 0, 0xFF);
glDisable (GL_STENCIL_TEST); glDisable (GL_STENCIL_TEST);

27
tests/bugs/vis/bug25060 Normal file
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@ -0,0 +1,27 @@
puts "============"
puts "CR25060"
puts "============"
puts ""
#######################################################################
# Capping breaks highlighting of shaded AIS_Shape with displayed edges.
#######################################################################
vinit View1
box b 10 10 10
vdisplay b
vshowfaceboundary b 1
vclipplane create pln1
vclipplane set pln1 object b
vclipplane change pln1 equation 0 1 0 -5
vclipplane change pln1 capping on
vsetdispmode 1
vfit
vmoveto 304 146
set x_coord 304
set y_coord 146
checkcolor $x_coord $y_coord 0 1 1
if { $stat != 1 } {
puts "Error : Highlighting is broken."
}
set only_screen 1