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Title: Correctly implement background fullscreen quad. by tychedelia · Pull Request #50 · processing/libprocessing · GitHub

Open Graph Title: Correctly implement background fullscreen quad. by tychedelia · Pull Request #50 · processing/libprocessing

X Title: Correctly implement background fullscreen quad. by tychedelia · Pull Request #50 · processing/libprocessing

Description: Previously, we were just creating a quad in world space that matched the size of our surface, which worked fine for ortho projections. However, this is mega broken for perspective projection. Instead, we compute inverse ndc coords on the CPU so they get correctly transformed back into ndc in the vertex shader, which makes everything just work in either case!

Open Graph Description: Previously, we were just creating a quad in world space that matched the size of our surface, which worked fine for ortho projections. However, this is mega broken for perspective projection. Inste...

X Description: Previously, we were just creating a quad in world space that matched the size of our surface, which worked fine for ortho projections. However, this is mega broken for perspective projection. Inste...

Opengraph URL: https://github.com/processing/libprocessing/pull/50

X: @github

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ae7c3c0 Correctly implement background fullscreen quad. tychedelia Dec 27, 2025	https://patch-diff.githubusercontent.com/processing/libprocessing/pull/50/commits/ae7c3c0f7fc39b7808e5dabecec67c17bd439689
ba93e38 Fmt. tychedelia Dec 27, 2025	https://patch-diff.githubusercontent.com/processing/libprocessing/pull/50/commits/ba93e380818b9239d141e97c03c108e26f445b16
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