Add support for OpVectorShuffle
Bug: b/126472836
Change-Id: I0e7afc53e863540fb5bd76ec8737f4b2aa3a015b
Reviewed-on: https://swiftshader-review.googlesource.com/c/25649
Tested-by: Chris Forbes <chrisforbes@google.com>
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro-Presubmit: kokoro <noreply+kokoro@google.com>
diff --git a/src/Pipeline/SpirvShader.cpp b/src/Pipeline/SpirvShader.cpp
index e44be3e..bfdf462 100644
--- a/src/Pipeline/SpirvShader.cpp
+++ b/src/Pipeline/SpirvShader.cpp
@@ -262,6 +262,7 @@
case spv::OpCompositeConstruct:
case spv::OpCompositeInsert:
case spv::OpCompositeExtract:
+ case spv::OpVectorShuffle:
// Instructions that yield an ssavalue.
{
TypeID typeId = insn.word(1);
@@ -1025,6 +1026,34 @@
dst.emplace(i, compositeObjectAccess[firstComponent + i]);
break;
}
+ case spv::OpVectorShuffle:
+ {
+ auto &type = getType(insn.word(1));
+ auto &dst = routine->createIntermediate(insn.word(2), type.sizeInComponents);
+
+ GenericValue firstHalfAccess(this, routine, insn.word(3));
+ GenericValue secondHalfAccess(this, routine, insn.word(4));
+
+ for (auto i = 0u; i < type.sizeInComponents; i++)
+ {
+ auto selector = insn.word(5 + i);
+ if (selector == static_cast<uint32_t>(-1))
+ {
+ // Undefined value. Until we decide to do real undef values, zero is as good
+ // a value as any
+ dst.emplace(i, RValue<Float4>(0.0f));
+ }
+ else if (selector < type.sizeInComponents)
+ {
+ dst.emplace(i, firstHalfAccess[selector]);
+ }
+ else
+ {
+ dst.emplace(i, secondHalfAccess[selector - type.sizeInComponents]);
+ }
+ }
+ break;
+ }
default:
printf("emit: ignoring opcode %d\n", insn.opcode());
break;
