[Octave-bug-tracker] [bug #47974] Visual differences between gnuplot and OpenGL toolkits

[Dan Sebald]

Follow-up Comment #3, bug #47974 (project octave):

Rik, let's start with

ezmeshc : #1 : mesh is completely white

because that is the one that stood out to me when I looked hastily through the
demos.

First, just to get my thinking straight, I'm looking at the figure/children
properties.  For that ezmeshc example, I'm seeing one child of the figure and
that child has two children of its own.  One of those children is a "surface",
and looking at the properties for that surface, I'm seeing:


    edgealpha =  1
    edgecolor = flat
    edgelighting = none
    erasemode = normal
    facealpha =  1
    facecolor =

       1   1   1

    facelighting = none
    facenormals = [](0x0)
    facenormalsmode = auto


and those are the properties we were just working on with the prior gnuplot
patch.  The above properties are independent of the toolkit, however, so
assume they are the desired properties.  The facecolor is 1 1 1, and as I
understood this from the previous gnuplot changeset is that we should see a
white surface, which is what the gnuplot example is doing.

Is it possible that the qt toolkit is missing the surface in this case?  Why
is the ezmechc example setting facecolor to 1 1 1 instead of 'none'?  Am I
overlooking something (there are a lot of properties I'm sure I'm unfamiliar
with)?

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