In gfx_advanced example, the logo can't show. about lyon HOT 8 CLOSED

Huh, odd. I'll look into this. Hopefully it is not mac-specific as I don't own one. What happens if you press the 'p' or 'w' keys while running the demo?

from lyon.

@nical Nothing change

Just output:

== gfx-rs example ==
Controls:
  Arrow keys: scrolling
  PgUp/PgDown: zoom in/out
  w: toggle wireframe mode
  p: toggle show points
  a/z: increase/decrease the stroke width
 -- fill: 557 vertices 1707 indices
 -- stroke: 1270 vertices 3810 indices
 -- zoom: 5, scroll: (70,70)
 -- zoom: 5, scroll: (70,70)

from lyon.

I can't reproduce, so I'll have to speculate.

• Could be an issue with the depth buffer: this example draws front to back with the depth buffer enabled, and since the backgrounds is drawn last, if there is something wrong going on with the back buffer, the background could cover the rest.
• Could be an issue in the shader causing GL to just not draw the triangles or miscompute the position and draw everything way out of the view. Not sure what to do for this without having a hand on a computer that can reproduce the issue.

I just pushed a commit to the master branch that lets you disable rendering the background by pressing the 'b' key. Could you try it out ? If the logos show on a black background it means it was a depth buffer issue, otherwise back to square one.

from lyon.

still nothing display...😹

from lyon.

Too bad, at least I can rule out the potential depth buffer bugs. In PR #30 which I just merged to the master branch I renamed this example into gfx_advanced and added a gfx_basic one which is a lot simpler (no animation, no colors, no background, just a black logo on a white background. Could you try it out? I would be very surprised if this one doesn't work on you computer, but it would be good to know for sure. I'll get back on the advanced example investigation when I can get my hand on a mac to reproduce the issue.

from lyon.

from lyon.

@nical I'm too busy now. but if have time, I will try to location

from lyon.

Hey @tioover :) I've just added a change in the gfx_advanced example. Could you please try to run it again and tell me if it now works ? :D

from lyon.