[PD] [Gem] bit depth of display
Roman Haefeli
reduzent at gmail.com
Thu Feb 17 18:59:16 CET 2022
Hi
I have a Gem patch for an installation that basically maps a 1x12px
image created with [pix_set] to a fullscreen [rectangle]. When the
pixel values are close enough to each other, the gradients between the
pixels shows edges that look like low bit depth (and probably are due
low bit depth). I am looking for a way to display the Gem window with a
higher bit depth. My external monitor advertises itself as capable of
30-bit (which I assume means 10 bit per channel).
Here my questions:
* Is it correct that in OpenGL calculations are done with floats?
* Are the gradients calculated with high (>8bit) precision?
* Is precision lost during transport to display?
* What can be done to feed a monitor/projector with higher bit depth?
* What can be done on macOS with a HDMI projector attached?
Here a screenshot of the Gem display:
https://netpd.org/~roman/tmp/12px-gradients.png
Roman
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