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Don't add swizzle at all if it's the identity, after combining extracts

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This commit is contained in:
baldurk
2016-04-22 14:40:40 +02:00
parent d39782e979
commit 98a5ba0507
1 changed files with 13 additions and 2 deletions
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renderdoc/driver/shaders/spirv/spirv_disassemble.cpp
+13 -2
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@@ -1055,8 +1055,19 @@ struct SPVInstruction
if(op->arguments[j]->op->literals[0] < 4)
swizzleString += swizzle[ op->arguments[j]->op->literals[0] ];
}
ret += StringFormat::Fmt("%s.%s", base.c_str(), swizzleString.c_str());
// if it ends up being the identity swizzle of the same size as the base, just insert
// the base.
if(swizzleString.length() < 4 &&
swizzleString.length() == op->arguments[i]->op->arguments[0]->op->type->vectorSize &&
!strncmp(swizzleString.c_str(), swizzle, swizzleString.length()))
{
ret += base;
}
else
{
ret += StringFormat::Fmt("%s.%s", base.c_str(), swizzleString.c_str());
}
added = true;