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pan/va: Model image load instructions

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These use the attribute pipe, the new versions of LD_ATTR_TEX, but reading
texture descriptors instead of attribute descriptors unlike their Bifrost
predecessors.

Signed-off-by: Alyssa Rosenzweig <alyssa@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/15756>
This commit is contained in:
Alyssa Rosenzweig 2022-03-30 15:51:38 -04:00
parent 12da32c31f
commit 9b727944a0
1 changed files with 56 additions and 14 deletions
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70
src/panfrost/bifrost/valhall/ISA.xml
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@ -936,7 +936,7 @@
<imm name="index" start="12" size="8"/>
</ins>
<ins name="LD_ATTR_IMM" title="Load immediate attribute" opcode="0x66" unit="LS">
<ins name="LD_ATTR_IMM" title="Load immediate attribute" opcode="0x66" opcode2="0" unit="LS">
<desc>
Load `vecsize` components from the attribute descriptor at entry `index`
of resource table `table` at index (vertex ID, instance ID), converting
@ -946,6 +946,7 @@
<vecsize/>
<regfmt/>
<slot/>
<mod name="descriptor_type" start="128" size="1" implied="true"/>
<sr write="true"/>
<src>Vertex ID</src>
<src>Instance ID</src>
@ -953,6 +954,60 @@
<imm name="table" start="16" size="4"/>
</ins>
<ins name="LD_ATTR" title="Load indirect attribute" opcode="0x76" opcode2="0" unit="LS">
<desc>
Load `vecsize` components from the attribute descriptor at the specified
location at index (vertex ID, instance ID), converting
to the specified register format.
The index must not diverge within a warp.
</desc>
<sr_count/>
<vecsize/>
<regfmt/>
<slot/>
<mod name="descriptor_type" start="128" size="1" implied="true"/>
<sr write="true"/>
<src>Vertex ID</src>
<src>Instance ID</src>
<src>Index and table</src>
</ins>
<ins name="LD_TEX_IMM" title="Load immediate texture" opcode="0x66" opcode2="1" unit="LS">
<desc>
Load `vecsize` components from the texture descriptor at entry `index`
of resource table `table`, converting
to the specified register format.
</desc>
<sr_count/>
<vecsize/>
<regfmt/>
<slot/>
<mod name="descriptor_type" start="128" size="1" implied="true"/>
<sr write="true"/>
<src>X/Y coordinates (16:16)</src>
<src>Z/W coordinates (16:16)</src>
<imm name="index" start="20" size="4"/>
<imm name="table" start="16" size="4"/>
</ins>
<ins name="LD_TEX" title="Load indirect texture" opcode="0x76" opcode2="1" unit="LS">
<desc>
Load `vecsize` components from the texture descriptor at the specified
location at index, converting
to the specified register format.
</desc>
<sr_count/>
<vecsize/>
<regfmt/>
<slot/>
<mod name="descriptor_type" start="128" size="1" implied="true"/>
<sr write="true"/>
<src>X/Y coordinates (16:16)</src>
<src>Z/W coordinates (16:16)</src>
<src>Index and table</src>
</ins>
<ins name="LEA_ATTR_IMM" title="Load effective address of image texel" opcode="0x67" opcode2="0" unit="LS">
<desc>
Load the effective address of an attribute specified with the
@ -1165,19 +1220,6 @@
<src>Mode descriptor</src>
</ins>
<ins name="LD_ATTR" title="Load indirect attribute" opcode="0x76" unit="LS">
<!-- TODO: for some reason, blob is using index (1<<24)|x for [x] -->
<desc>The index must not diverge within a warp.</desc>
<sr_count/>
<vecsize/>
<regfmt/>
<slot/>
<sr write="true"/>
<src>Vertex ID</src>
<src>Instance ID</src>
<src>Index</src>
</ins>
<ins name="LEA_BUF_IMM" title="Load buffer effective address" opcode="0x5E" unit="LS">
<desc>
Load effective address of a buffer with an immediate offset added.