EnableAttribute method
void
EnableAttribute(
- String canonical
)
Implementation
void EnableAttribute(String canonical) {
assert(!attributes.containsKey(canonical),
"attribute ${canonical} already exists");
assert(canonical.startsWith("a"), "${canonical} is not an attribute");
ShaderVarDesc desc = RetrieveShaderVarDesc(canonical);
switch (desc.type) {
case VarTypeVec2:
attributes[canonical] = <VM.Vector2>[];
break;
case VarTypeVec3:
attributes[canonical] = <VM.Vector3>[];
break;
case VarTypeVec4:
attributes[canonical] = <VM.Vector4>[];
break;
case VarTypeFloat:
attributes[canonical] = <double>[];
break;
case VarTypeUvec4:
attributes[canonical] = <List<int>>[];
break;
default:
assert(false, "unknown type for ${canonical}");
}
}