CODEWITHSUNDEEP
iosswiftopengl-esglkit
NYG
NYG

Reputation: 1817

OpenGL ES "imperfection"

I'm drawing a sort of frame in 2D with OpenGL ES. And this is the result I get.

If you see it with attention, you might notice that some borders are thicker than others. But I specified the same width for the borders, and I'm 100% sure the camera is perpendicular to the 2D plan. What might the problem be?

(I'm writing this in Swift, iPhone 6 with iOS 9, no GLKit)

Upvotes: 1

Views: 54

Answers (1)

solidpixel
solidpixel

Reputation: 12084

I'd guess your lines are not hitting the center of a pixel, and/or are not exact pixel multiples in widths, so you're getting noisy coverage of sample points when the lines are getting rasterized.

Upvotes: 1

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