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v3d: Create separate sampler states for the various blend formats.

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The sampler border color is encoded in the TMU's blending format (half
floats, 32-bit floats, or integers) and must be clamped to the format's
range unorm/snorm/int ranges by the driver.  Additionally, the TMU doesn't
know about how we're abusing the swizzle to support BGRA, A, and LA, so we
have to pre-swizzle the border color for those.

We don't really want to spend half a kb on sampler states in most cases,
so skip generating the variants when the border color is unused or is
0,0,0,0.
This commit is contained in:
Eric Anholt
2018-12-26 20:56:49 -08:00
parent 5fe4250a2c
commit c496b60ed8
4 changed files with 303 additions and 50 deletions
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src/broadcom/cle/v3d_packet_v33.xml
+4 -4
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@@ -1457,10 +1457,10 @@
</struct>
<struct name="Sampler State" min_ver="41">
<field name="Border color Alpha" size="32" start="160" type="uint"/>
<field name="Border color Blue" size="32" start="128" type="uint"/>
<field name="Border color Green" size="32" start="96" type="uint"/>
<field name="Border color Red" size="32" start="64" type="uint"/>
<field name="Border color word 3" size="32" start="160" type="uint"/>
<field name="Border color word 2" size="32" start="128" type="uint"/>
<field name="Border color word 1" size="32" start="96" type="uint"/>
<field name="Border color word 0" size="32" start="64" type="uint"/>
<field name="Maximum Anisotropy" size="2" start="61" type="uint"/>
<field name="Border Color Mode" size="3" start="58" type="Border Color Mode"/>