Minor fixes for Gridlist

Pieter-Dewachter commented 1 year ago

I have found two minor issues when using Gridlist:

Semi-transparent background colors (such as tocolor(0, 132, 255, 12)) were not showing up because of the "blend" blend mode that was used inside the render target. This has been changed to "modulate_add" instead as recommended by the MTA Wiki (and also renders correctly now). While I was at it, I also moved from dxDrawImage to dxDrawRectangle in case no background image is set since that seems to make more sense.
Images set by using dgsGridListSetItemImage were not taking the parent (gridlist) alpha correclty into account.

thisdp commented 1 year ago

dxDrawImage in dgs is hooked. if there doesn't have "image", we will use rectangle instead, see utility "dxDrawImage"

Pieter-Dewachter commented 1 year ago

Ah you are right! I have reverted that part of the PR but I think the rest should still be valid?

thisdp / dgs