public static void TangentToWorld(SpaceTransform xform, string inputValue, string outputVariable, ShaderStringBuilder sb)
{
// prior to version 2 all transforms were Normal, and directional transforms were normalized
if (xform.version <= 1)
{
if (xform.type != ConversionType.Position)
{
xform.normalize = true;
}
xform.type = ConversionType.Normal;
}
using (sb.BlockScope())
{
string tangentTransform = GenerateTangentTransform(sb, CoordinateSpace.World);
switch (xform.type)
{
case ConversionType.Position:
sb.AddLine(outputVariable, " = TransformTangentToWorldDir(", inputValue, ", ", tangentTransform, ", false).xyz + IN.WorldSpacePosition;");
break;
case ConversionType.Direction:
sb.AddLine(outputVariable, " = TransformTangentToWorldDir(", inputValue, ", ", tangentTransform, ", ", xform.NormalizeString(), ").xyz;");
break;
case ConversionType.Normal:
sb.AddLine(outputVariable, " = TransformTangentToWorld(", inputValue, ", ", tangentTransform, ", ", xform.NormalizeString(), ");");
break;
}
}
}
public static void ViewToWorld(SpaceTransform xform, string inputValue, string outputVariable, ShaderStringBuilder sb)
{
switch (xform.type)
{
case ConversionType.Position:
sb.AddLine(outputVariable, " = TransformViewToWorld(", inputValue, ");");
break;
case ConversionType.Direction:
if (xform.version <= 1)
{
xform.normalize = false;
}
sb.AddLine(outputVariable, " = TransformViewToWorldDir(", inputValue, ", ", xform.NormalizeString(), ");");
break;
case ConversionType.Normal:
sb.AddLine(outputVariable, " = TransformViewToWorldNormal(", inputValue, ", ", xform.NormalizeString(), ");");
break;
}
}
public static void WorldToTangent(SpaceTransform xform, string inputValue, string outputVariable, ShaderStringBuilder sb)
{
if (xform.version <= 1)
{
// prior to version 2, all transform were normalized, and all transforms were Normal transforms
xform.normalize = true;
xform.type = ConversionType.Normal;
}
using (sb.BlockScope())
{
string tangentTransform = GenerateTangentTransform(sb, xform.from);
switch (xform.type)
{
case ConversionType.Position:
sb.AddLine(outputVariable, " = TransformWorldToTangentDir(", inputValue, " - IN.WorldSpacePosition, ", tangentTransform, ", false);");
break;
case ConversionType.Direction:
sb.AddLine(outputVariable, " = TransformWorldToTangentDir(", inputValue, ", ", tangentTransform, ", ", xform.NormalizeString(), ");");
break;
case ConversionType.Normal:
sb.AddLine(outputVariable, " = TransformWorldToTangent(", inputValue, ", ", tangentTransform, ", ", xform.NormalizeString(), ");");
break;
}
}
}