The scale node use a multiplier, 0.5 to reduce the image size by half and 2 to increase by 2. What should i use if i want to convert any image source at the desired resolution, for example i want to input a 4096*4096 or 512*512 and always get a 1024*1024 output and get the entire image not cropped.

  • $\begingroup$ did you try changing the scale from relative to absolute? $\endgroup$ – user2816 Jun 10 '16 at 17:27
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    $\begingroup$ This question is kind of strange. Blender texture coordinates by default go from 0..1. If you UV unwrap a square and put a texture on it, you'll see the entire texture whether it is 4k, 2k, or 1k. If that texture isn't square, it will be squished into a square. In what context does the resolution of this texture really matter? $\endgroup$ – Mutant Bob Jun 10 '16 at 17:28
  • $\begingroup$ In absolute i can downscale correctly but if i upscale to a given resolution the image is cropped. Yes it's important to get a specific resolution because i am making a node setup to check if a 2k texture is seamless and it translate a 2k texture for that: blenderartists.org/forum/… $\endgroup$ – Danyl Bekhoucha Jun 10 '16 at 18:01

You can set the Resolution Size (in pixels) to the desired output size in the Scene Dimensions section of the properties window..

Using a Scale Node, will rescale an image connected to it to the predetermined output resolution.

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If you want to double the number of pixels just render at 200% (in this example rendering a 512 x 512 pixel image will result in an image of 1024 x 1024 pixels). To cut the number of pixels in half, render at 50%.

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Note that if the images are a different aspect ratio than the output, you have three choices:

stretch: deform the image to match within the aspect ratio of the container)

Fit: keep the images proportions but fill the remaining either with a transparent background or with black (if the "Use Alpha" option is unchecked)

or Crop Not stretching the image, resizing to fit vertically center cropping horizontally.

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