Blend modes not shown

[pcav]

LM does not support blending

[rldhont]

LM does not support blending because it does not query QGIS-Server to merge layer rendering.

This enhancement is not compatible with #39 Control for layer transparency until we does not use OL3. With OL3 we can do blending client side instead of server side.

[nboisteault]

@rldhont is it a feature we'd like in the next Lizmap version?

[Mavialle]

+1 ! Allow display like this with an elevation layer (sceenshoot from QGIS)

[Gustry]

Side question, I won't check, but is-it not possible already with the "Group as layer" option in the plugin, if you have a single base layer that you can group for the hillshade and the landuse ?

[gioman]

layer that you can group for the hillshade and the landuse ?

@Gustry the visual effect given by blending modes is different compared to the one given by a semi-transparent layer on top of another.

[mdouchin]

@gioman @Mavialle you can indeed organize your layers in a group, for example called "topo", which will contain

• your dem
• you hillshade
• your contours
• roads
• rivers
• etc.

As @Gustry proposed, if in Lizmap plugin, you publish the group "background" with the option "Group as layer" checked, Lizmap Web Client will ask QGIS Server a single image combining the child layers and respecting the blending modes between the layers of this group.

[gioman]

As @Gustry proposed, if in Lizmap plugin, you publish the group "background" with the option "Group as layer" checked, Lizmap Web Client will ask QGIS Server a single image combining the child layers and respecting the blending modes between the layers of this group.

@mdouchin oh, let me try that then!

[gioman]

Confirmed it works, this can be closed.