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Reduce dynamic memory allocation in getting unif/varying variants of AtomicTypes

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This commit is contained in:
Matt Pharr
2012-05-04 13:42:23 -07:00
parent e1bc010bd1
commit 7db8824da2
2 changed files with 16 additions and 3 deletions
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17
type.cpp
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@@ -186,6 +186,7 @@ const AtomicType *AtomicType::Void =
AtomicType::AtomicType(BasicType bt, Variability v, bool ic) AtomicType::AtomicType(BasicType bt, Variability v, bool ic)
: Type(ATOMIC_TYPE), basicType(bt), variability(v), isConst(ic) { : Type(ATOMIC_TYPE), basicType(bt), variability(v), isConst(ic) {
asOtherConstType = NULL; asOtherConstType = NULL;
asUniformType = asVaryingType = NULL;
} }
@@ -290,7 +291,13 @@ AtomicType::GetAsVaryingType() const {
Assert(basicType != TYPE_VOID); Assert(basicType != TYPE_VOID);
if (variability == Variability::Varying) if (variability == Variability::Varying)
return this; return this;
return new AtomicType(basicType, Variability::Varying, isConst);
if (asVaryingType == NULL) {
asVaryingType = new AtomicType(basicType, Variability::Varying, isConst);
if (variability == Variability::Uniform)
asVaryingType->asUniformType = this;
}
return asVaryingType;
} }
@@ -299,7 +306,13 @@ AtomicType::GetAsUniformType() const {
Assert(basicType != TYPE_VOID); Assert(basicType != TYPE_VOID);
if (variability == Variability::Uniform) if (variability == Variability::Uniform)
return this; return this;
return new AtomicType(basicType, Variability::Uniform, isConst);
if (asUniformType == NULL) {
asUniformType = new AtomicType(basicType, Variability::Uniform, isConst);
if (variability == Variability::Varying)
asUniformType->asVaryingType = this;
}
return asUniformType;
} }

2
type.h
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@@ -333,7 +333,7 @@ private:
const bool isConst; const bool isConst;
AtomicType(BasicType basicType, Variability v, bool isConst); AtomicType(BasicType basicType, Variability v, bool isConst);
mutable const AtomicType *asOtherConstType; mutable const AtomicType *asOtherConstType, *asUniformType, *asVaryingType;
}; };