# \#rendertarget **URL:** https://forums.unrealengine.com/tag/rendertarget/1997.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Resource-\>ReadPixels is very slow... faster way?](https://forums.unrealengine.com/t/resource-readpixels-is-very-slow-faster-way/345352)
**Author:** [@anonymous\_user\_69b87708](https://forums.unrealengine.com/u/anonymous_user_69b87708)\ **Replies:** 18\ **Last updated:** [October 19, 2026, 6:59am UTC](https://forums.unrealengine.com/t/resource-readpixels-is-very-slow-faster-way/345352 "2026-10-19T06:59:04Z")
I have set up a 2DSceneCapture component and using c++, I access the render target and read the pixels, like so: void MyActor::UpdateBuffer( ) { TArray\ ColorBuffer; if (RenderTarget != NULL) { FTextureRender… --- ## [Transparency in Render Target 2D shows up black](https://forums.unrealengine.com/t/transparency-in-render-target-2d-shows-up-black/381466)
**Author:** [@anonymous\_user\_fdd9bf78](https://forums.unrealengine.com/u/anonymous_user_fdd9bf78)\ **Replies:** 14\ **Last updated:** [March 17, 2026, 3:37pm UTC](https://forums.unrealengine.com/t/transparency-in-render-target-2d-shows-up-black/381466 "2026-03-17T15:37:18Z")
Hi, I’m trying to render a 3d widget onto a 2d texture, using a render target 2d asset created from within the editor and the FWidgetRenderer class at runtime, from within C++. But any transparency in the widget shows u… --- ## [Pixel Era – Max-Efficiency texture Sampling + Mini-map Logic with Zero Overlaps or Traces (new paradigm for world based interaction)](https://forums.unrealengine.com/t/pixel-era-max-efficiency-texture-sampling-mini-map-logic-with-zero-overlaps-or-traces-new-paradigm-for-world-based-interaction/2594506)
**Author:** [@Gimli\_Gloin](https://forums.unrealengine.com/u/Gimli_Gloin)\ **Replies:** 4\ **Last updated:** [July 21, 2025, 11:43am UTC](https://forums.unrealengine.com/t/pixel-era-max-efficiency-texture-sampling-mini-map-logic-with-zero-overlaps-or-traces-new-paradigm-for-world-based-interaction/2594506 "2025-07-21T11:43:19Z")
Unreal Engine makes reading GPU data painful, and overlap events are a bloated mess for large worlds. Pixel Era was built to end that. Preview No more “Extremely Slow & Inefficient” read nodes. Pixel Era uses micr… --- ## [How to Properly capture image using render targets and free them and performance monitoring for rendertargets.](https://forums.unrealengine.com/t/how-to-properly-capture-image-using-render-targets-and-free-them-and-performance-monitoring-for-rendertargets/2579921)
**Author:** [@dhashuml](https://forums.unrealengine.com/u/dhashuml)\ **Replies:** 2\ **Last updated:** [June 30, 2025, 2:31am UTC](https://forums.unrealengine.com/t/how-to-properly-capture-image-using-render-targets-and-free-them-and-performance-monitoring-for-rendertargets/2579921 "2025-06-30T02:31:35Z")
Hello Everyone, I’m working on a high frequency image generator (does some processing after that so can’t really rely on current plugins and solutions), and I’m using readsurfacefloatdata for 12 images each of 512X512 p… --- ## [SceneCapture2D has no shadows when raytrace enabled](https://forums.unrealengine.com/t/scenecapture2d-has-no-shadows-when-raytrace-enabled/467890)
**Author:** [@kuszi](https://forums.unrealengine.com/u/kuszi)\ **Replies:** 2\ **Last updated:** [April 1, 2025, 9:25pm UTC](https://forums.unrealengine.com/t/scenecapture2d-has-no-shadows-when-raytrace-enabled/467890 "2025-04-01T21:25:07Z")
Hi I have a very simple default scene with a cube, a Rendertarget material and a SceneCapture2D. Using this in NON Raytrace mode the Rendertarget result has nice shadows. However if Raytrace is enabled there are no sh… --- ## [UMG: How to make widget with rounded borders](https://forums.unrealengine.com/t/umg-how-to-make-widget-with-rounded-borders/382390)
**Author:** [@anonymous\_user\_fdd9bf78](https://forums.unrealengine.com/u/anonymous_user_fdd9bf78)\ **Replies:** 15\ **Last updated:** [March 30, 2025, 6:57am UTC](https://forums.unrealengine.com/t/umg-how-to-make-widget-with-rounded-borders/382390 "2025-03-30T06:57:09Z")
I’m trying to make a UMG widget with rounded corners (as opposed to the default straight rectangular shape). That is, is a square / rectangle with 4 rounded corners and some other UMG elements inside it. But I want the r… --- ## [PixelStreaming a Depthmap](https://forums.unrealengine.com/t/pixelstreaming-a-depthmap/2210268)
**Author:** [@ClayJay3](https://forums.unrealengine.com/u/ClayJay3)\ **Replies:** 0\ **Last updated:** [December 12, 2024, 2:45am UTC](https://forums.unrealengine.com/t/pixelstreaming-a-depthmap/2210268 "2024-12-12T02:45:05Z")
Hello, First off, I think the PixelStreaming plugin is a GODSEND. It’s extremely useful for many different applications and makes streaming basically anything you can store in a render target very easy and fast. (as lon… --- ## [The gamma value in RenderTarget seem to not work。](https://forums.unrealengine.com/t/the-gamma-value-in-rendertarget-seem-to-not-work/420799)
**Author:** [@Anonymous\_11293419d6b2b0bc25dd65b9f576eea0](https://forums.unrealengine.com/u/Anonymous_11293419d6b2b0bc25dd65b9f576eea0)\ **Replies:** 7\ **Last updated:** [November 1, 2024, 1:14pm UTC](https://forums.unrealengine.com/t/the-gamma-value-in-rendertarget-seem-to-not-work/420799 "2024-11-01T13:14:23Z")
How many times I change the gamma value in RenderTarget. But the result is not any change. I just want to know if this value is really work. --- ## [Render target outputting wrong colours](https://forums.unrealengine.com/t/render-target-outputting-wrong-colours/375016)
**Author:** [@SFtheWolf](https://forums.unrealengine.com/u/SFtheWolf)\ **Replies:** 3\ **Last updated:** [October 30, 2024, 9:51am UTC](https://forums.unrealengine.com/t/render-target-outputting-wrong-colours/375016 "2024-10-30T09:51:53Z")
So I have a SceneCapture2d, it captures to a render target, the contents of which look normal: Then I add a blendable to the player camera which outputs the contents of the render target to the screen with no modific… --- ## [Negative values in Render Target](https://forums.unrealengine.com/t/negative-values-in-render-target/330638)
**Author:** [@anonymous\_user\_f50088e8](https://forums.unrealengine.com/u/anonymous_user_f50088e8)\ **Replies:** 4\ **Last updated:** [September 25, 2024, 5:41am UTC](https://forums.unrealengine.com/t/negative-values-in-render-target/330638 "2024-09-25T05:41:12Z")
Hello, I’m currently using a Render Target for various rendering purposes (capture and export in .HDR files). I have several different passes made with the Render Target (standard passe, passe with only the ambient occl… --- ## [Rendering Transparent Objects into RenderTarget by using shader](https://forums.unrealengine.com/t/rendering-transparent-objects-into-rendertarget-by-using-shader/2015807)
**Author:** [@Nick24\_3](https://forums.unrealengine.com/u/Nick24_3)\ **Replies:** 0\ **Last updated:** [September 11, 2024, 8:35am UTC](https://forums.unrealengine.com/t/rendering-transparent-objects-into-rendertarget-by-using-shader/2015807 "2024-09-11T08:35:11Z")
What I want to accomplish is to render only any transparent objects in the scene without any postprocessing effect applied. I’ve created a Custom Camera Actor with SceneCaptureComponent2D and RenderTargetTexture, and ma… --- ## [Render Target glitch](https://forums.unrealengine.com/t/render-target-glitch/1867948)
**Author:** [@arzigogolato](https://forums.unrealengine.com/u/arzigogolato)\ **Replies:** 1\ **Last updated:** [September 4, 2024, 2:11pm UTC](https://forums.unrealengine.com/t/render-target-glitch/1867948 "2024-09-04T14:11:08Z")
Hi everyone, I’m encountering a problem while drawing on a RenderTarget at runtime in Unreal Engine. Specifically, I’m seeing some strange line glitches that propagate across the RenderTarget, as shown in the attached i… --- ## [Write linear colour + alpha to a RenderTarget](https://forums.unrealengine.com/t/write-linear-colour-alpha-to-a-rendertarget/474752)
**Author:** [@patrickreece](https://forums.unrealengine.com/u/patrickreece)\ **Replies:** 3\ **Last updated:** [August 29, 2024, 9:38pm UTC](https://forums.unrealengine.com/t/write-linear-colour-alpha-to-a-rendertarget/474752 "2024-08-29T21:38:02Z")
I have found a way to write linear space colour (not sRGB/ gamma space) + alpha to a RenderTarget, but I find it hard to believe this is the best way. I’ll write it here for anyone else who wants to, and would love if pe… --- ## [Metahuman hair incorrectly working inside of render targets](https://forums.unrealengine.com/t/metahuman-hair-incorrectly-working-inside-of-render-targets/1787570)
**Author:** [@RedTechSRB](https://forums.unrealengine.com/u/RedTechSRB)\ **Replies:** 2\ **Last updated:** [June 17, 2024, 10:23am UTC](https://forums.unrealengine.com/t/metahuman-hair-incorrectly-working-inside-of-render-targets/1787570 "2024-06-17T10:23:50Z")
Hello! Brief description of what I am doing and why I need things to be the way they are right now: I need to be able to stream multiple characters using Pixel Streaming. This basically (from my research) has to be don… --- ## [Draw time getting worse with time](https://forums.unrealengine.com/t/draw-time-getting-worse-with-time/1879343)
**Author:** [@MatteoGLeva](https://forums.unrealengine.com/u/MatteoGLeva)\ **Replies:** 0\ **Last updated:** [May 29, 2024, 4:56pm UTC](https://forums.unrealengine.com/t/draw-time-getting-worse-with-time/1879343 "2024-05-29T16:56:25Z")
Hello, In my application the draw times have periodic peaks (about 2 per seconds) and they get worse in time. After about 20 minutes they are so high that there is a visible stutter in the rendered scene. My scene cons… --- ## [render target texture mixed up after project update to 5.4.1](https://forums.unrealengine.com/t/render-target-texture-mixed-up-after-project-update-to-5-4-1/1855185)
**Author:** [@OrbitalZones](https://forums.unrealengine.com/u/OrbitalZones)\ **Replies:** 0\ **Last updated:** [May 14, 2024, 7:29am UTC](https://forums.unrealengine.com/t/render-target-texture-mixed-up-after-project-update-to-5-4-1/1855185 "2024-05-14T07:29:32Z")
The SceneCaptureComponent was correctly capturing the desired screen area within the editor, but as soon I ran my project in preview mode the created RT texture was mixed up. The image on the RT texture was blurred and d… --- ## [Client RenderTargetPool Line:26 Error](https://forums.unrealengine.com/t/client-rendertargetpool-line-26-error/1794528)
**Author:** [@qimby123](https://forums.unrealengine.com/u/qimby123)\ **Replies:** 1\ **Last updated:** [April 10, 2024, 2:57pm UTC](https://forums.unrealengine.com/t/client-rendertargetpool-line-26-error/1794528 "2024-04-10T14:57:53Z")
Hi all! I draw the image generation, on the server everything is fine, but on the client there is an error. Please help me to understand. Thank you! --- ## [Raw bitmap pixel bytes to render target](https://forums.unrealengine.com/t/raw-bitmap-pixel-bytes-to-render-target/1771411)
**Author:** [@VincentNativo](https://forums.unrealengine.com/u/VincentNativo)\ **Replies:** 2\ **Last updated:** [March 26, 2024, 3:04am UTC](https://forums.unrealengine.com/t/raw-bitmap-pixel-bytes-to-render-target/1771411 "2024-03-26T03:04:25Z")
So I’ve been trying to solve this for a while now and have lost track of how many searches I’ve made and how many approaches I’ve tried (outside of manually doing everything myself at a low level), so I would love some h… --- ## [Groom render correctly in scene but black in render target](https://forums.unrealengine.com/t/groom-render-correctly-in-scene-but-black-in-render-target/1664408)
**Author:** [@MasterKainAG](https://forums.unrealengine.com/u/MasterKainAG)\ **Replies:** 1\ **Last updated:** [February 4, 2024, 4:19am UTC](https://forums.unrealengine.com/t/groom-render-correctly-in-scene-but-black-in-render-target/1664408 "2024-02-04T04:19:01Z")
So far I will attach the scene render and RT render. I don’t really know how to fix that hair. I’ve tried to change ALL kind of capture type on the scene capture comp. It simply doesn’t care. Please. Help. Scene rende… --- ## [Bad text / font quality when drawing it on RenderTargetCanvas2D](https://forums.unrealengine.com/t/bad-text-font-quality-when-drawing-it-on-rendertargetcanvas2d/1643588)
**Author:** [@nitrogen092](https://forums.unrealengine.com/u/nitrogen092)\ **Replies:** 4\ **Last updated:** [January 27, 2024, 9:40am UTC](https://forums.unrealengine.com/t/bad-text-font-quality-when-drawing-it-on-rendertargetcanvas2d/1643588 "2024-01-27T09:40:27Z")
When drawing text on RenderTarget2D using the DrawText node, the text quality is very low, the text is blurred… I adjust the text size with the Scale parameter. I tried to increase the canvas size and, accordingly, the s… --- ## [Niagara Particles flicker when rendered by capture 2D](https://forums.unrealengine.com/t/niagara-particles-flicker-when-rendered-by-capture-2d/487875)
**Author:** [@mikolaj.saar](https://forums.unrealengine.com/u/mikolaj.saar)\ **Replies:** 2\ **Last updated:** [January 1, 2024, 11:23am UTC](https://forums.unrealengine.com/t/niagara-particles-flicker-when-rendered-by-capture-2d/487875 "2024-01-01T11:23:46Z")
Niagara Particles flicker when rendered by capture 2D. Anyone knows how to fix that? --- ## [Exporting a renderTarget as a PNG?](https://forums.unrealengine.com/t/exporting-a-rendertarget-as-a-png/372217)
**Author:** [@mago314](https://forums.unrealengine.com/u/mago314)\ **Replies:** 7\ **Last updated:** [December 24, 2023, 12:12am UTC](https://forums.unrealengine.com/t/exporting-a-rendertarget-as-a-png/372217 "2023-12-24T00:12:44Z")
But the Targets are created at runtime, so this isn’t an option :frowning: --- ## [Increase cube render target resolution?](https://forums.unrealengine.com/t/increase-cube-render-target-resolution/321685)
**Author:** [@3dlight](https://forums.unrealengine.com/u/3dlight)\ **Replies:** 10\ **Last updated:** [December 8, 2023, 11:21am UTC](https://forums.unrealengine.com/t/increase-cube-render-target-resolution/321685 "2023-12-08T11:21:10Z")
I’m using the cubeRenderTargets to output images for use as 360 degree stereo panoramas. Currently, there is a hard limit to the resolution that the cube renderTarget will go (2k). I’m aware that going this high, or hi… --- ## [How can I update cubemap data with rhi?](https://forums.unrealengine.com/t/how-can-i-update-cubemap-data-with-rhi/1302439)
**Author:** [@somawheels](https://forums.unrealengine.com/u/somawheels)\ **Replies:** 0\ **Last updated:** [September 18, 2023, 11:05pm UTC](https://forums.unrealengine.com/t/how-can-i-update-cubemap-data-with-rhi/1302439 "2023-09-18T23:05:34Z")
Hi I want to update the pixel data in a cube-map texture, without blocking the game-thread. Is there a way I can do this, using rhi? --- ## [Post Process Material Read and Write to Custom Texture](https://forums.unrealengine.com/t/post-process-material-read-and-write-to-custom-texture/888085)
**Author:** [@Unafafu](https://forums.unrealengine.com/u/Unafafu)\ **Replies:** 0\ **Last updated:** [April 12, 2023, 1:06am UTC](https://forums.unrealengine.com/t/post-process-material-read-and-write-to-custom-texture/888085 "2023-04-12T01:06:21Z")
I am trying to implement an Anisotropic Kuwahara filter. Several parts of the pipeline for this filter require computing an intermediary texture using a Custom node and then applying a gaussian blur to the texture (yes, … --- ## [Render Scene Grabbing Incorrect Data](https://forums.unrealengine.com/t/render-scene-grabbing-incorrect-data/780030)
**Author:** [@Soul\_Gatherer1](https://forums.unrealengine.com/u/Soul_Gatherer1)\ **Replies:** 2\ **Last updated:** [February 27, 2023, 11:09pm UTC](https://forums.unrealengine.com/t/render-scene-grabbing-incorrect-data/780030 "2023-02-27T23:09:31Z")
Hi there, I have a Scene Capture 2D component assigned to send it’s output to a Render Target, however the Render Target will only pull what I am currently looking at/highlighting (it will even pull the thumbnail for a … --- ## [Scene Capture 2D Component to CUBE RenderTarget](https://forums.unrealengine.com/t/scene-capture-2d-component-to-cube-rendertarget/443009)
**Author:** [@Ivan\_Elizarov](https://forums.unrealengine.com/u/Ivan_Elizarov)\ **Replies:** 4\ **Last updated:** [December 3, 2022, 8:07pm UTC](https://forums.unrealengine.com/t/scene-capture-2d-component-to-cube-rendertarget/443009 "2022-12-03T20:07:57Z")
I Can use a Scene Capture 2D Component in an amount of 6 components to make Cube Render Target ? I only need to use Screen Capture 2D Component Scene Capture Component Cube is not suitable for me. Example: Material R… --- ## [UTextureRenderTarget2D to PNG](https://forums.unrealengine.com/t/utexturerendertarget2d-to-png/411024)
**Author:** [@RDaneelOlivaw](https://forums.unrealengine.com/u/RDaneelOlivaw)\ **Replies:** 1\ **Last updated:** [August 24, 2022, 12:43pm UTC](https://forums.unrealengine.com/t/utexturerendertarget2d-to-png/411024 "2022-08-24T12:43:03Z")
Hi, I’ve been trying to make this work for the past two days and I it seems to me that something is not right I’m trying to retrieve camera images from UE4.17.2 and save them into a PNG. I have added to my ActorBluepr… --- ## [Export SceneColor (HDR) to PNG](https://forums.unrealengine.com/t/export-scenecolor-hdr-to-png/477799)
**Author:** [@i-ribeiro](https://forums.unrealengine.com/u/i-ribeiro)\ **Replies:** 1\ **Last updated:** [June 15, 2022, 9:31pm UTC](https://forums.unrealengine.com/t/export-scenecolor-hdr-to-png/477799 "2022-06-15T21:31:32Z")
I’m trying to simulate camera exposure by using a SceneCaptureComponent2D to additively render to an RT each frame, then applying post-process before exporting. The problem is, I need to be able to set Composite Mode to … --- ## [How do you copy a RenderTarget2D?](https://forums.unrealengine.com/t/how-do-you-copy-a-rendertarget2d/411223)
**Author:** [@DanimalsOnParade](https://forums.unrealengine.com/u/DanimalsOnParade)\ **Replies:** 5\ **Last updated:** [February 18, 2022, 3:59pm UTC](https://forums.unrealengine.com/t/how-do-you-copy-a-rendertarget2d/411223 "2022-02-18T15:59:44Z")
How do you make an exact copy of a URenderTarget2D? Is there some function that will do it? Alternatively, I know I can get the pixels of a URenderTarget2D with: TArray\ RawColorArray; auto RenderTarget = RT2D-\>G… [Next page](https://forums.unrealengine.com/tag/rendertarget/1997.md?match_all_tags=true&page=1&tags%5B%5D=rendertarget)