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0032274: Tests - unstable snapshots from test case v3d/bugs/bug24785

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Test case has been adjusted to reproduce scenario it was supposed to check.
This commit is contained in:
kgv 2021-04-07 14:29:58 +03:00 committed by bugmaster
parent c57bf5636c
commit 95bdefb201
2 changed files with 27 additions and 20 deletions
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2
src/ViewerTest/ViewerTest_ViewerCommands.cxx
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@ -5598,7 +5598,7 @@ static int VZLayer (Draw_Interpretor& theDI,
Graphic3d_ZLayerSettings aSettings = aViewer->ZLayerSettings (aLayeriter.Value());
printZLayerInfo (theDI, aSettings);
}
return 1;
return 0;
}
Standard_Integer anArgIter = 1;

45
tests/v3d/bugs/bug24785
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@ -6,45 +6,52 @@ vinit View1
# Thin boxes represent overlapping 2d objects in same plane
# Normally such configuration would cause z-fighting noise (flickering)
box b1 -0.75 -0.75 0 1 1 0.01
box b2 -0.5 -0.5 0 1 1 0.01
box b2 -0.50 -0.50 0 1 1 0.01
box b3 -0.25 -0.25 0 1 1 0.01
vdisplay b1
vdisplay b2
vdisplay b3
vsetmaterial b2 silver
vsetmaterial b3 copper
vdisplay b1 b2 b3 -dispMode 1
vaspects b1 -material brass
vaspects b2 -material silver
vaspects b3 -material copper
# Set object polygon mode Aspect_POM_None to inherit Z-Layer settings,
# as default object polygon offset is "Aspect_POM_Fill 1 1" (overrides Z-layer settings)
vpolygonoffset b1 8 0 0
vpolygonoffset b2 8 0 0
vpolygonoffset b3 8 0 0
psphere s 0.3
vdisplay s
vdisplay s -dispMode 1
vaspects s -material brass
vpolygonoffset s 8 0 0
# Create new z-layer for 3d objects
vzlayer add
vobjzlayer set s 1
catch { vzlayer -delete 1 }
set aLayerId [vzlayer add]
vdisplay s -layer $aLayerId
vsetdispmode 1
# Disable OpenGl depth test for layer 0 (to eliminate flickering)
# Disable OpenGL depth test for layer 0 (to eliminate flickering)
# But depth write is still enabled
vzlayer disable depthtest 0
vzlayer DEFAULT -disable depthTest
# Disable depth buffer clearing for layer 1 (we want correct overlapping with 3d objects)
vzlayer disable depthclear 1
vzlayer $aLayerId -disable depthClear
# List currently enabled settings of each layer
vzlayer settings 0
vzlayer settings 1
vzlayer DEFAULT -settings
vzlayer $aLayerId -settings
# "3d" box with one of its faces on same plane with "2d" objects
# Normally this also would cause flickering because new box is
# supposed to be in layer 1 as "3d" structure, thus depth test between
# new box and "2d" objects will be enabled.
box b 0 0 0.01 0.5 0.5 -0.5
vdisplay b
vobjzlayer set b 1
vdisplay b -dispMode 1 -layer $aLayerId
vaspects b -material brass
vpolygonoffset b 8 0 0
# To handle this situation, depth offset setting was introduced.
# It implemented with glPolygonOffset calls per layer.
vzlayer enable positiveoffset 1
# Set polygon offset 2 (greater than default value 1 to see the difference).
vzlayer 1 -enable depthoffset 2 1
vfit
vdump $imagedir/${casename}.png