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gpu: Add a knob for cache GC

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Read the GSK_CACHE_TIMEOUT environment variable to override the
default 15s timeout for cache gc. This is mainly meant for debugging.

Since we don't really need two knobs, reuse the gc timeout value
for the max age of items too.
This commit is contained in:
Matthias Clasen
2024-01-26 12:53:30 -05:00
parent 8009ed3a3c
commit e861ea4bd2
2 changed files with 57 additions and 7 deletions
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7
docs/reference/gtk/running.md
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@@ -460,6 +460,13 @@ disable certain optimizations of the "ngl" and "vulkan" renderer.
The special value `all` can be used to turn on all values. The special
value `help` can be used to obtain a list of all supported values.
### `GSK_CACHE_TIMEOUT`
Overrides the timeout for cache GC in the "ngl" and "vulkan" renderers.
The value can be -1 to disable GC entirely, 0 to force GC to happen
before every frame, or a positive number to do GC in a timeout every
n seconds. The default timeout is 15 seconds.
### `GSK_MAX_TEXTURE_SIZE`
Limit texture size to the minimum of this value and the OpenGL limit