texture write

Source/MasterTestProject/DynamicTextureUtilities.cpp

@@ -39,24 +39,24 @@ void UDynamicTextureUtilities::UpdateTextureRegion(UTexture2D* Texture, int32 Mi
 				bool, bFreeData, bFreeData,
 				{
 					int32 CurrentFirstMip = RegionData->Texture2DResource->GetCurrentFirstMip();
-			if (RegionData->MipIndex >= CurrentFirstMip)
-			{
-				RHIUpdateTexture2D(
-					RegionData->Texture2DResource->GetTexture2DRHI(),
-					RegionData->MipIndex - CurrentFirstMip,
-					RegionData->Region,
-					RegionData->SrcPitch,
-					RegionData->SrcData
-					+ RegionData->Region.SrcY * RegionData->SrcPitch
-					+ RegionData->Region.SrcX * RegionData->SrcBpp
-				);
-			}
-			// TODO is this leaking if we never set this to true??
-			if (bFreeData)
-			{
-				FMemory::Free(RegionData->SrcData);
-			}
-			delete RegionData;
+					if (RegionData->MipIndex >= CurrentFirstMip)
+					{
+						RHIUpdateTexture2D(
+							RegionData->Texture2DResource->GetTexture2DRHI(),
+							RegionData->MipIndex - CurrentFirstMip,
+							RegionData->Region,
+							RegionData->SrcPitch,
+							RegionData->SrcData
+							+ RegionData->Region.SrcY * RegionData->SrcPitch
+							+ RegionData->Region.SrcX * RegionData->SrcBpp
+						);
+					}
+					// TODO is this leaking if we never set this to true??
+					if (bFreeData)
+					{
+						FMemory::Free(RegionData->SrcData);
+					}
+				delete RegionData;
 				});
 
 		}
@@ -66,14 +66,14 @@ void UDynamicTextureUtilities::UpdateTextureRegion(UTexture2D* Texture, int32 Mi
 void UDynamicTextureUtilities::UpdateDynamicVectorTexture(const TArray<FLinearColor>& Source, UTexture2D* Texture)
 {
 	// Only handles 32-bit float textures
-	if (!Texture || Texture->GetPixelFormat() != PF_A32B32G32R32F) return;
+	if (!Texture || Texture->GetPixelFormat() != PF_FloatRGB) return;
 	// Shouldn't do anything if there's no data
 	if (Source.Num() < 1) return;
 
 	UpdateTextureRegion(Texture, 0, FUpdateTextureRegion2D(0, 0, 0, 0, Texture->GetSizeX(), Texture->GetSizeY()), Texture->GetSizeX() * sizeof(FLinearColor), sizeof(FLinearColor), (uint8*)Source.GetData(), false);
 }
 
-UTexture2D* UDynamicTextureUtilities::CreateTransientDynamicTexture(int32 Width, int32 Height, EPixelFormat PixelFormat /*= PF_A32B32G32R32F*/)
+UTexture2D* UDynamicTextureUtilities::CreateTransientDynamicTexture(int32 Width, int32 Height, EPixelFormat PixelFormat)
 {
 	auto* Texture = UTexture2D::CreateTransient(Width, Height, PixelFormat);
 	if (Texture)
@@ -85,6 +85,32 @@ UTexture2D* UDynamicTextureUtilities::CreateTransientDynamicTexture(int32 Width,
 	return Texture;
 }
 
+UTexture2D* UDynamicTextureUtilities::CreateDynamicTextureWithData(int length, uint8* data)
+{
+	
+	int32 size = FMath::FloorToInt(FMath::Sqrt(length))+1;
+
+	UE_LOG(TILES, Error, TEXT("Texturein %d, size  %d"), length, size);
+
+	auto* Texture = UTexture2D::CreateTransient(size, size, PF_FloatRGB);
+	if (Texture)
+	{
+		Texture->CompressionSettings = TextureCompressionSettings::TC_VectorDisplacementmap;
+		Texture->SRGB = 0;
+		Texture->UpdateResource();
+	}
+
+
+
+	UpdateTextureRegion(Texture, 0,
+		FUpdateTextureRegion2D(0, 0, 0, 0, size, size),
+		size * 3 * sizeof(float), 3 * sizeof(float), data, false);
+
+
+	return Texture;
+
+}
+
 /*
 void UDynamicTextureUtilities::SetDynamicTextureAndIndex(class UStaticMeshComponent* Component, class UTexture2D* Texture, int32 Index, FName IndexParameterName, FName TextureParameterName)
 {

Source/MasterTestProject/DynamicTextureUtilities.h

@@ -3,6 +3,7 @@
 #pragma once
 
 #include "UObject/NoExportTypes.h"
+#include "UnrealMath.h"
 #include "DynamicTextureUtilities.generated.h"
 
 /**
@@ -30,5 +31,7 @@ public:
 	// material, otherwise this will not have the proper effect.
 	//static void SetDynamicTextureAndIndex(class UStaticMeshComponent* Component, class UTexture2D* Texture, int32 Index, FName IndexParameterName, FName TextureParameterName);
 	
+	// input rgb flaot array
+	static UTexture2D* UDynamicTextureUtilities::CreateDynamicTextureWithData(int length, uint8* data);
 	
 };

Source/MasterTestProject/Tileset.cpp

@@ -348,6 +348,16 @@ void ATilesetActor::parsePointCloudTile(const TArray<uint8> data, FTile * tile)
 				uint32 featureTableBinaryOffset = pntheader->getFeatureStart() + pntheader->featureTable.featureTableJSONByteLength;
 				TSharedPtr<FJsonObject> binaryBodyReference = FeatureTableJSON->GetObjectField("POSITION");
 				int32 byteOffset = binaryBodyReference->GetIntegerField("byteOffset");
+				uint8* start = (uint8*)(data.GetData() + pntheader->getFeatureBinaryStart() + byteOffset);
+
+				UTexture2D* points = UDynamicTextureUtilities::CreateDynamicTextureWithData(instances_length, start);
+
+
+				if (TextureTest && points) {
+					UMaterialInstanceDynamic *Material = UMaterialInstanceDynamic::Create(TextureTest->GetStaticMeshComponent()->GetMaterial(0), nullptr);
+					Material->SetTextureParameterValue(FName("DynamicTexture"), points);
+					TextureTest->GetStaticMeshComponent()->SetMaterial(0,Material);
+				}
 				/*
 				TArray<FVector> positons = getAsArray<FVector>(data.GetData(), (int32)(featureTableBinaryOffset + byteOffset), instances_length);
 				

Source/MasterTestProject/Tileset.h

@@ -3,6 +3,7 @@
 #pragma once
 
 #include "UObject/NoExportTypes.h"
+#include "DynamicTextureUtilities.h"
 #include "Tileset.generated.h"
 
 
@@ -295,10 +296,16 @@ struct PointCloudHeader {
 		return 28 /*headersize*/;
 	}
 
+	uint32 getFeatureBinaryStart() {
+		return getFeatureStart() + featureTable.featureTableJSONByteLength;
+	}
+
 	uint32 getBatchStart() {
 		return getFeatureStart() + featureTable.length();
 	}
 
+
+
 	FString getpartAsString(int start, int lenght) {
 		char *ansiiData = new char[lenght + 1];
 		memcpy(ansiiData, (void*)(((uint8*)this) + start), lenght); //Assumes bytesRead is always smaller than 1024 bytes
@@ -334,6 +341,9 @@ public:
 	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "LOD")
 	float LODtreshold = 0.1;
 
+	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Texture")
+	AStaticMeshActor  *TextureTest = NULL;
+
 	// Called when the game starts or when spawned
 	virtual void BeginPlay() override;