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mesa/st: add PIPE_CAP_GL_CLAMP

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when this is not set, this triggers shader and sampler state updates any time a sampler
starts or stops using GL_CLAMP, applying bitmasks needed to run nir_lower_tex
and setting CLAMP_TO_BORDER/CLAMP_TO_EDGE as necessary to mimic the behavior

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8756>
This commit is contained in:
Mike Blumenkrantz
2021-01-25 17:37:29 -05:00
committed by Marge Bot
parent 10e71d5c9a
commit e8f71f6ac4
13 changed files with 128 additions and 1 deletions
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docs/gallium/screen.rst
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@@ -610,6 +610,7 @@ The integer capabilities:
* ``PIPE_CAP_MAX_TEXTURE_MB``: Maximum texture size in MB (default is 1024)
* ``PIPE_CAP_DEVICE_PROTECTED_CONTENT``: Whether the device support protected / encrypted content.
* ``PIPE_CAP_PREFER_REAL_BUFFER_IN_CONSTBUF0``: The state tracker is encouraged to upload constants into a real buffer and bind it into constant buffer 0 instead of binding a user pointer. This may enable a faster codepath in a gallium frontend for drivers that really prefer a real buffer.
* ``PIPE_CAP_GL_CLAMP``: Driver natively supports GL_CLAMP. Required for non-NIR drivers with the GL frontend. NIR drivers with the cap unavailable will have GL_CLAMP lowered to txd/txl with a saturate on the coordinates.
.. _pipe_capf: