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force depth buffer clear for render2d

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This commit is contained in:
David Rose 2003-06-18 22:14:31 +00:00
parent e37b967a0b
commit ac751a2715
1 changed files with 17 additions and 8 deletions
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25
direct/src/showbase/ShowBase.py
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@ -419,20 +419,25 @@ class ShowBase(DirectObject.DirectObject):
# Set up some overrides to turn off certain properties which
# we probably won't need for 2-d objects.
# It's particularly important to turn off the depth test,
# since we'll be keeping the same depth buffer already filled
# by the previously-drawn 3-d scene--we don't want to pay for
# a clear operation, but we also don't want to collide with
# that depth buffer.
# It's probably important to turn off the depth test, since
# many 2-d objects will be drawn over each other without
# regard to depth position.
# We used to avoid clearing the depth buffer before drawing
# render2d, but nowadays we clear it anyway, since we
# occasionally want to put 3-d geometry under render2d, and
# it's simplest (and seems to be easier on graphics drivers)
# if the 2-d scene has been cleared first.
dt = DepthTestAttrib.make(DepthTestAttrib.MNone)
dw = DepthWriteAttrib.make(DepthWriteAttrib.MOff)
#lt = LightTransition.allOff()
self.render2d.node().setAttrib(dt, 1)
self.render2d.node().setAttrib(dw, 1)
self.render2d.node().setAttrib(dt)
self.render2d.node().setAttrib(dw)
#self.render2d.node().setAttrib(lt, 1)
self.render2d.setMaterialOff(1)
self.render2d.setTwoSided(1, 1)
self.render2d.setTwoSided(1)
# The normal 2-d layer has an aspect ratio that matches the
# window, but its coordinate system is square. This means
@ -467,6 +472,10 @@ class ShowBase(DirectObject.DirectObject):
# And make a display region to cover the whole layer.
dr = layer.makeDisplayRegion()
# Enable clearing of the depth buffer on this new display
# region (see the comment above).
dr.setClearDepthActive(1)
# Now make a new Camera node.
cam2dNode = Camera('cam2d')
lens = OrthographicLens()