UKismetRenderingLibrary::ReadRenderTargetRawUV
#include "Kismet/KismetRenderingLibrary.h"
Access: public
Specifiers: staticUFUNCTIONBlueprintCallable
Description
Reads a single raw, unconverted pixel value from a render target at a UV coordinate in [0,1]x[0,1] space.
Caveats & Gotchas
- • Incredibly inefficient and slow — same GPU readback stall as the pixel-coordinate variants. Not suitable for per-frame use.
- • UV is converted to nearest integer pixel internally; there is no bilinear filtering, so results are not smoothly interpolated between texels.
- • Returns raw stored values, not sRGB-corrected color — use ReadRenderTargetUV instead if you want color-correct sampling.
Signature
static FLinearColor ReadRenderTargetRawUV(UObject* WorldContextObject, UTextureRenderTarget2D* TextureRenderTarget, float U, float V, bool bNormalize = true)Parameters
| Name | Type | Description | Default |
|---|---|---|---|
| WorldContextObject | UObject* | World context used to resolve the current world. | — |
| TextureRenderTarget | UTextureRenderTarget2D* | The render target to read from. | — |
| U | float | Horizontal UV coordinate in [0,1]. | — |
| V | float | Vertical UV coordinate in [0,1]. | — |
| bNormalize | bool | Whether to normalize 8-bit formats into the [0,1] range. | true |
Return Type
FLinearColor Example
Sample raw value at a UV C++
FLinearColor Value = UKismetRenderingLibrary::ReadRenderTargetRawUV(this, NoiseRT, 0.5f, 0.5f);See Also
Tags
Version History
Introduced in: unknown
| Version | Status | Notes |
|---|---|---|
| 5.6 | stable | — |
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