Add a stencil mask example #491
Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
greggman
force-pushed
the
stencil-sample
branch
from
94619e1 to
ca76c43
Compare
beaufortfrancois
approved these changes
Mar 24, 2025
Collaborator
beaufortfrancois
left a comment
beaufortfrancois
left a comment
There was a problem hiding this comment.
Thanks for starting this sample @greggman! I've left few comments.
I'm not sure this is a great sample because I'm not sure using the stencil mask for this purpose is best. It's got the advantage that it should "early out" but it has the disadvantage of, for example, using an alpha mask, that would allow more than just masked yes/no. Stencil masks are used for shadow volumes but that techinque has fallen out of favor. Stencil masks are also used for outlines. That might be a good use but there are several other popular outline algorithmns. So, this is demo is kind of pretty and at least shows using the a stencil buffer.
greggman
force-pushed
the
stencil-sample
branch
from
ca76c43 to
c245f4f
Compare
beaufortfrancois
approved these changes
Mar 24, 2025
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
I'm not sure this is a great sample because I'm not sure using the stencil mask for this purpose is best. It's got the advantage that it should "early out" but it has the disadvantage of, for example, using an alpha mask, that would allow more than just masked yes/no.
Stencil masks are used for shadow volumes but that techinque has fallen out of favor. Stencil masks are also used for outlines. That might be a good use but there are several other popular outline algorithmns.
So, this demo is kind of pretty and at least shows using the a stencil buffer.