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Fix #129533: EEVEE: Dither film accumulation to avoid shadow banding

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Since the same pixel gets used every sample,
the rounding error accumulates and biases the
result instead of averaging out, as we're using
a fixed offset.

Fix by dithering the rounding offset per
sample instead of using a fixed value.

Pull Request: https://projects.blender.org/blender/blender/pulls/161958
This commit is contained in:
Le Gia Bao 2026-08-04 14:23:01 +02:00 • committed by Clément Foucault
parent 6035c1baa3
commit 51daedddde
19 changed files with 61 additions and 37 deletions
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2
tests/python/eevee_render_tests.py
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@ -413,7 +413,7 @@ def main():
elif test_dir_name.startswith('hair'):
# hair_close_up has differences of line rasterization on linux.
if gpu_vendor == "INTEL":
report.set_fail_percent(0.13)
report.set_fail_percent(0.135)
elif test_dir_name.startswith('principled_bsdf'):
# principled_bsdf_thinfilm_metallic has some weird behavior in reflection of
# black surfaces. to be investigated