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freedreno: Document draw predication packets

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Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6009>
This commit is contained in:
Connor Abbott 2020-07-18 19:25:01 +02:00
parent 9e48e31fa5
commit 06332ef60e
1 changed files with 60 additions and 4 deletions
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64
src/freedreno/registers/adreno/adreno_pm4.xml
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@ -313,12 +313,30 @@ xsi:schemaLocation="http://nouveau.freedesktop.org/ rules-ng.xsd">
<value name="CP_DRAW_INDIRECT_MULTI" value="0x2a" varset="chip" variants="A6XX"/>
<value name="CP_DRAW_AUTO" value="0x24"/>
<value name="CP_UNKNOWN_19" value="0x19"/>
<doc>
Enable or disable predication globally. Also resets the
predicate to "passing" and the local bit to enabled when
enabling global predication.
</doc>
<value name="CP_DRAW_PRED_ENABLE_GLOBAL" value="0x19"/>
<doc>set to 1 for fastclear..:</doc>
<value name="CP_UNKNOWN_1A" value="0x1a"/>
<doc>
Enable or disable predication locally. Unlike globally enabling
predication, this packet doesn't touch any other state.
Predication only happens when enabled globally and locally and a
predicate has been set. This should be used for internal draws
which aren't supposed to use the predication state:
<value name="CP_UNKNOWN_4E" value="0x4e"/>
CP_DRAW_PRED_ENABLE_LOCAL(0)
... do draw...
CP_DRAW_PRED_ENABLE_LOCAL(1)
</doc>
<value name="CP_DRAW_PRED_ENABLE_LOCAL" value="0x1a"/>
<doc>
Latch a draw predicate into the internal register.
</doc>
<value name="CP_DRAW_PRED_SET" value="0x4e"/>
<doc>
for A4xx
@ -832,6 +850,44 @@ opcode: CP_LOAD_STATE4 (30) (4 dwords)
</stripe>
</domain>
<domain name="CP_DRAW_PRED_ENABLE_GLOBAL" width="32" varset="chip">
<reg32 offset="0" name="0">
<bitfield name="ENABLE" pos="0" type="boolean"/>
</reg32>
</domain>
<domain name="CP_DRAW_PRED_ENABLE_LOCAL" width="32" varset="chip">
<reg32 offset="0" name="0">
<bitfield name="ENABLE" pos="0" type="boolean"/>
</reg32>
</domain>
<domain name="CP_DRAW_PRED_SET" width="32" varset="chip">
<enum name="cp_draw_pred_src">
<!--
Sources 1-4 seem to be about combining reading
SO/primitive queries and setting the predicate, which is
a DX11-specific optimization (since in DX11 you can only
predicate on the result of queries).
-->
<value name="PRED_SRC_MEM" value="5">
<doc>
Read a 64-bit value at the given address and
test if it equals/doesn't equal 0.
</doc>
</value>
</enum>
<enum name="cp_draw_pred_test">
<value name="NE_0_PASS" value="0"/>
<value name="EQ_0_PASS" value="1"/>
</enum>
<reg32 offset="0" name="0">
<bitfield name="SRC" low="4" high="7" type="cp_draw_pred_src"/>
<bitfield name="TEST" pos="8" type="cp_draw_pred_test"/>
</reg32>
<reg64 offset="1" name="MEM_ADDR" type="address"/>
</domain>
<domain name="CP_SET_DRAW_STATE" width="32" varset="chip" variants="A4XX-">
<array offset="0" stride="3" length="100">
<reg32 offset="0" name="0">