# \#framebuffer

**URL:** https://discourse.threejs.org/tag/framebuffer/339.md

[Latest](https://discourse.threejs.org/latest.md) · [Categories](https://discourse.threejs.org/categories.md) · [Tags](https://discourse.threejs.org/tags.md)

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## [Three JS equivalent operation to BlitFramebuffer](https://discourse.threejs.org/t/three-js-equivalent-operation-to-blitframebuffer/52197)

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**Author:** [@AEspinosaDev](https://discourse.threejs.org/u/AEspinosaDev)\
**Replies:** 6\
**Last updated:** [July 31, 2024, 6:51am UTC](https://discourse.threejs.org/t/three-js-equivalent-operation-to-blitframebuffer/52197 "2024-07-31T06:51:49Z")

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Hi guys, I need to do a simple operation in my application, very common in certain techniques, but for some reason I can’t find how to do it in the Three Js framework. The operation is basically render to a certain ren…

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## [Render buffershader with negative values](https://discourse.threejs.org/t/render-buffershader-with-negative-values/53660)

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**Author:** [@sjoes\_versions](https://discourse.threejs.org/u/sjoes_versions)\
**Replies:** 2\
**Last updated:** [July 9, 2023, 3:11pm UTC](https://discourse.threejs.org/t/render-buffershader-with-negative-values/53660 "2023-07-09T15:11:17Z")

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Dear community, I am setting up a small glsl project using Threejs to make image distortions based on mouse movement. Whenever the mouse moves left or right it is the point to update the uvmap of the image with the corr…

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## [Texture Merging](https://discourse.threejs.org/t/texture-merging/52234)

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**Author:** [@dsu](https://discourse.threejs.org/u/dsu)\
**Replies:** 1\
**Last updated:** [June 1, 2023, 3:17am UTC](https://discourse.threejs.org/t/texture-merging/52234 "2023-06-01T03:17:19Z")

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I can concatenate multiple pieces of canvasTexture into one texture using the three.js api. Is there an api to concatenate multiple pieces of frameBufferTexture into one texture? I need this now to do that

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## [Displaying the Contents of FrameBuffers](https://discourse.threejs.org/t/displaying-the-contents-of-framebuffers/49605)

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**Author:** [@phil\_crowther](https://discourse.threejs.org/u/phil_crowther)\
**Replies:** 2\
**Last updated:** [March 26, 2023, 9:35pm UTC](https://discourse.threejs.org/t/displaying-the-contents-of-framebuffers/49605 "2023-03-26T21:35:00Z")

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I have been deconstructing an ocean wave generator that uses framebuffers to store interim calculations. The last two items the program creates are a displacement map and some version of a normal map. It used those maps…

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## [Apply depth buffer from render target to the next render](https://discourse.threejs.org/t/apply-depth-buffer-from-render-target-to-the-next-render/37276)

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**Author:** [@DolphinIQ](https://discourse.threejs.org/u/DolphinIQ)\
**Replies:** 3\
**Last updated:** [April 21, 2022, 2:12pm UTC](https://discourse.threejs.org/t/apply-depth-buffer-from-render-target-to-the-next-render/37276 "2022-04-21T14:12:47Z")

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Hello I’ve been dealing with an issue for some days now. I have the following situation in my render loop: Render scene1 to a render target Render scene2 I need the depth buffer from the first render to be applied t…

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## [Additional frame buffer for post-process](https://discourse.threejs.org/t/additional-frame-buffer-for-post-process/35610)

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**Author:** [@benzsuankularb](https://discourse.threejs.org/u/benzsuankularb)\
**Replies:** 1\
**Last updated:** [March 6, 2022, 6:44pm UTC](https://discourse.threejs.org/t/additional-frame-buffer-for-post-process/35610 "2022-03-06T18:44:02Z")

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Hi folk, I’m just started to learn WebGL and shader for digging into more detail of rendering pipeline. So I’m very weak in a lot of basics here. The question is, How can I attach the additional Frame Buffer to the Shad…

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## ["Mouse flowmap" texture looking pixelated on iOS](https://discourse.threejs.org/t/mouse-flowmap-texture-looking-pixelated-on-ios/34731)

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**Author:** [@YustusKevyn](https://discourse.threejs.org/u/YustusKevyn)\
**Replies:** 1\
**Last updated:** [February 28, 2022, 3:43pm UTC](https://discourse.threejs.org/t/mouse-flowmap-texture-looking-pixelated-on-ios/34731 "2022-02-28T15:43:50Z")

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Hi. I’ve created this simple “mouse flowmap”. It uses the same technique as the EffectComposer: Creating two RenderTargets and alternately using them as read- and write buffers. The texture from the current write buffer …

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## [Why is a custom FBO not antialiased?](https://discourse.threejs.org/t/why-is-a-custom-fbo-not-antialiased/1329)

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**Author:** [@blove](https://discourse.threejs.org/u/blove)\
**Replies:** 2\
**Last updated:** [January 8, 2019, 1:29pm UTC](https://discourse.threejs.org/t/why-is-a-custom-fbo-not-antialiased/1329 "2019-01-08T13:29:05Z")

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Why is a custom FBO not antialiased? Rendering to the default FBO works with MSAA.

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## [Get the framebuffer image from specific object](https://discourse.threejs.org/t/get-the-framebuffer-image-from-specific-object/4753)

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**Author:** [@Prodigy](https://discourse.threejs.org/u/Prodigy)\
**Replies:** 3\
**Last updated:** [November 1, 2018, 3:11pm UTC](https://discourse.threejs.org/t/get-the-framebuffer-image-from-specific-object/4753 "2018-11-01T15:11:32Z")

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Is possible get specific rectangle from a framebuffer? My scene have multiple objects, I need get the framebuffer image of only one specific object in the scene, how can I get that?