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Optimisied Blend Normal Node

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I've also added a getNormalZero to get a normal that has zeroed out, i.e. it faces directly outwards from the face. This enables the user to not have to input a vector for either the Base or Additional Normal inputs and still get a result that is acceptable. This is handy if you want to "wash out" a normal.
This commit is contained in:
Richard
2021-01-25 09:35:22 +11:00
parent f714afc180
commit 6ef65734cd
3 changed files with 10 additions and 4 deletions
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12
Source/Engine/Tools/MaterialGenerator/MaterialGenerator.Material.cpp
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@@ -342,10 +342,14 @@ void MaterialGenerator::ProcessGroupMaterial(Box* box, Node* node, Value& value)
// Blend Normals
case 26:
{
const auto baseNormal = tryGetValue(node->GetBox(0), Value::Zero).AsVector3();
const auto additionalNormal = tryGetValue(node->GetBox(1), Value::Zero).AsVector3();
const String text = String::Format(TEXT("float3((float2({0}.xy) + float2({1}.xy) * 2.0), sqrt(saturate(1.0 - dot((float2({0}.xy) + float2({1}.xy) * 2.0).xy, (float2({0}.xy) + float2({1}.xy) * 2.0).xy))))"), baseNormal.Value, additionalNormal.Value);
value = writeLocal(ValueType::Vector3, text, node);
const auto baseNormal = tryGetValue(node->GetBox(0), getNormalZero).AsVector3();
const auto additionalNormal = tryGetValue(node->GetBox(1), getNormalZero).AsVector3();
const String text1 = String::Format(TEXT("(float2({0}.xy) + float2({1}.xy) * 2.0)"), baseNormal.Value, additionalNormal.Value);
const auto appendXY = writeLocal(ValueType::Vector2, text1, node);
const String text2 = String::Format(TEXT("float3({0}, sqrt(saturate(1.0 - dot({0}.xy, {0}.xy))))"), appendXY.Value);
value = writeLocal(ValueType::Vector3, text2, node);
break;
}
// Rotator

1
Source/Engine/Tools/MaterialGenerator/MaterialGenerator.cpp
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@@ -27,6 +27,7 @@ enum MaterialTemplateInputsMapping
MaterialValue MaterialGenerator::getUVs(VariantType::Vector2, TEXT("input.TexCoord"));
MaterialValue MaterialGenerator::getTime(VariantType::Float, TEXT("TimeParam"));
MaterialValue MaterialGenerator::getNormal(VariantType::Vector3, TEXT("input.TBN[2]"));
MaterialValue MaterialGenerator::getNormalZero(VariantType::Vector3, TEXT("float3(.5, .5, 1)"));
MaterialValue MaterialGenerator::getVertexColor(VariantType::Vector4, TEXT("GetVertexColor(input)"));
MaterialGenerator::MaterialGenerator()

1
Source/Engine/Tools/MaterialGenerator/MaterialGenerator.h
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@@ -205,6 +205,7 @@ public:
static MaterialValue getUVs;
static MaterialValue getTime;
static MaterialValue getNormal;
static MaterialValue getNormalZero;
static MaterialValue getVertexColor;
static MaterialGraphBoxesMapping MaterialGraphBoxesMappings[];