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Add option to sample Global SDF from higher cascade

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This commit is contained in:
Wojtek Figat
2024-07-19 00:30:06 +02:00
parent 3945e1416b
commit 53ca33f301
4 changed files with 33 additions and 8 deletions
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19
Source/Engine/Particles/Graph/GPU/ParticleEmitterGraph.GPU.Textures.cpp
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@@ -311,10 +311,27 @@ void ParticleEmitterGPUGenerator::ProcessGroupTextures(Box* box, Node* node, Val
{
auto param = findOrAddGlobalSDF();
Value worldPosition = tryGetValue(node->GetBox(1), Value(VariantType::Float3, TEXT("input.WorldPosition.xyz"))).Cast(VariantType::Float3);
value = writeLocal(VariantType::Float, String::Format(TEXT("SampleGlobalSDF({0}, {0}_Tex, {1})"), param.ShaderName, worldPosition.Value), node);
Value startCascade = tryGetValue(node->GetBox(2), 0, Value::Zero).Cast(VariantType::Uint);
value = writeLocal(VariantType::Float, String::Format(TEXT("SampleGlobalSDF({0}, {0}_Tex, {0}_Mip, {1}, {2})"), param.ShaderName, worldPosition.Value, startCascade.Value), node);
_includes.Add(TEXT("./Flax/GlobalSignDistanceField.hlsl"));
break;
}
// Sample Global SDF Gradient
case 15:
{
auto gradientBox = node->GetBox(0);
auto distanceBox = node->GetBox(2);
auto param = findOrAddGlobalSDF();
Value worldPosition = tryGetValue(node->GetBox(1), Value(VariantType::Float3, TEXT("input.WorldPosition.xyz"))).Cast(VariantType::Float3);
Value startCascade = tryGetValue(node->GetBox(2), 0, Value::Zero).Cast(VariantType::Uint);
auto distance = writeLocal(VariantType::Float, node);
auto gradient = writeLocal(VariantType::Float3, String::Format(TEXT("SampleGlobalSDFGradient({0}, {0}_Tex, {0}_Mip, {1}, {2}, {3})"), param.ShaderName, worldPosition.Value, distance.Value, startCascade.Value), node);
_includes.Add(TEXT("./Flax/GlobalSignDistanceField.hlsl"));
gradientBox->Cache = gradient;
distanceBox->Cache = distance;
value = box == gradientBox ? gradient : distance;
break;
}
default:
break;
}