Implement overdraw, lighting, and unshaded debug draw modes for OpenGL #86677
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fire
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@lyuma do you think we should have an engine implementation of the gamma conversion hack for compatibility/opengl? |
that sounds interesting, is there a link or file i can see to understand what hack you are talking about? |
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Thanks! And congrats on your first merged Godot contribution! |
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Cherry-picked for 4.2.2. |
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Debug lighting and unshaded should work as expected. For unshaded specifically it seems like most of the work was already there and just needed to be toggled by setting the right variant.
For overdraw mode, using the same shader as the one used in the forward renderer results in faded colours, probably due to doing blending in srgb vs linear space. one way to compensate for this is to set a higher alpha which is done in this implementation. I attached some pictures of what this looks like, although it doest quite match the forward renderer. I chose to set ALPHA=0.2 instead of ALPHA=0.1 as in forward+ (i wanted to match the colour of forward+, setting ALPHA=0.3 makes the objects look too blue compared to forward+)
bugsquad edit: Fixes #82485