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Clarify issue with GLES2 renderer (#6100)

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* Clarify issue with GLES2 renderer

See #6098

* Apply suggestions from code review

Co-authored-by: Clay John <claynjohn@gmail.com>
Co-authored-by: Hugo Locurcio <hugo.locurcio@hugo.pro>
This commit is contained in:
Cameron Reikes
2022-08-24 07:54:23 -07:00
committed by GitHub
parent 7842c5b50a
commit 02db4f3cad
1 changed files with 4 additions and 0 deletions
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tutorials/shaders/shader_reference/spatial_shader.rst
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@@ -324,6 +324,10 @@ Below is an example of a custom light function using a Lambertian lighting model
If you want the lights to add together, add the light contribution to ``DIFFUSE_LIGHT`` using ``+=``, rather than overwriting it.
.. warning::
In GLES2, lights will always be added together even if you override ``DIFFUSE_LIGHT`` using ``=``. This is due to lighting being computed in multiple passes (one for each light), unlike GLES3.
.. warning::
The ``light()`` function won't be run if the ``vertex_lighting`` render mode