Questions tagged [transparency]

Transparency can be anything from an alpha-channel in an image, to shaders in the BGE, to transparency in a material, to the alpha pass in the compositor.

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25
votes
2answers
23k views

Add a transparent image on top of a material [duplicate]

I'm designing this animal-type creature, and want to add a transparent .png image to its face with the face features (object has a subsurf). On the left is the image with the features, on the right is ...
255
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4answers
455k views

Can Blender render pngs with the background transparent?

I would like to render an animation as a series of .png images with transparent backgrounds for use in a video. Is this possible?
20
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1answer
7k views

Black artifacts when looking through many transparent objects?

Using v2.73, cycles and a very simple scene: an array of cubes, no big deal. If I set the shader's material to transparent, the cubes in the foreground do become transparent but those far away in the ...
13
votes
1answer
4k views

Render semi-transparent volume with cycles

I want to render an image of a fire in cycles, but as a png with a transparent background. Without a transparent background, the output image looks like this: But as soon as I tick the "Transparent" ...
12
votes
1answer
20k views

How can I setup a Material in Cycles for Z-Transparency?

After converting to nodes in order to render using Cycles I've no idea where to enable the z-transparency. I guess the image textures alpha channel needs to be pluged somewhere but I've no idea which ...
16
votes
3answers
8k views

How to properly render smoke on a transparent background?

When rendering volumes with Film > Transparent enabled, the alpha appears to be the wrong type (premultiplied/straight). In the 3D view it works as expected: This is a known bug. Is there any way to ...
24
votes
1answer
50k views

How can I make a more realistic glass shader? [duplicate]

Here's a sample scene: A room with a window, a point light to project light into the room, an HDR environment outside the room and a nice Image by Rembrandt that should be somewhat reflected on the ...
6
votes
2answers
4k views

Transparent textured planes produce black artifacts

Having problems with hair transparency using cycles. I ported over a model from daz studio (have done this a few times before with no issues). Using a simple mix shader, transparent top, diffuse ...
11
votes
1answer
27k views

Image Alpha Background Renders Black when using “Import Images as Planes”

I must be missing something here. I'm doing an extremely simple Import Image as Plane using the AddOn and the imported image has an alpha background but it renders (and even previews in the material ...
8
votes
2answers
3k views

Rendering fire animations with transparent background

I'm creating a simple fireball sprite for my game and I want to render a fire animation. I would like to get the upper images with transparent background, but when is set the transparency on under ...
32
votes
9answers
51k views

Any Video formats that render with Alpha Channel?

Does anyone know if there are any video formats (besides the HUGE uncompressed avis) that you can render in that maintain the alpha channel? (i.e. for after FX etc.) I used to use quicktime, but ...
15
votes
2answers
17k views

Render shadows over a transparent background in cycles

I'm trying to make a logo that will be on the header of a website. What I'd like to achieve, and the reason I'm using Blender, is the projected shadows on the background looking perfectly real (as ...
10
votes
5answers
7k views

Glow effect invisible on transparent background

I'm trying to render a lightsaber on a transparent background to use as game sprites. I've followed a tutorial on youtube to create the glow/blur effect and it worked great on a black background but ...
9
votes
1answer
5k views

Setup a decal material in cycles [duplicate]

I'm trying to setup a image decal in cycles, and I can't figure how to setup the nodes to work fine. Does anyone know the solution? blendFile
11
votes
4answers
6k views

Is there a way to add fake thickness to an alpha image texture?

I'm using Cycles I want to add thickness to a texture with alpha transparency like @rich-sedman do in his nice answer here: How can I make a hexagonal grill? But this time with an image texture (jpg+...
9
votes
1answer
32k views

How can I make an object invisible when I render in Cycles?

Using the Cycles Render Engine How can I make an object invisible when I render?
11
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2answers
4k views

Is there a way to have Cycles skip rendering alpha?

If I wanted to create an animation, each frame would have several seconds of rendering a completely transparent part, which adds up obviously. Is there a way to eliminate this waste of time?
6
votes
1answer
723 views

Make light paths only pass through non-emitted areas?

I'm trying to make it so that the plane is transparent except for the light from the aqua emission. Or in other words, how can I make it so that the plane's white areas are transparent and the plane's ...
21
votes
1answer
8k views

How to render a mesh transparent with a color on its edges only, with nodes?

I would like to have my object transparent, with a color only on the edges, would someone know how to do this? I am starting with the nodes, if anyone can help with some guidelines I would really ...
12
votes
1answer
118k views

Transparent image textures in cycles [duplicate]

I added two planes in Cycles with Image Texture in png with some transparency. I covered one by the other but transparency doesn't work, I mean it is impossible to see the one which is under despite ...
12
votes
3answers
6k views

How to create a gradient texture from one material to another (opaque to clear)?

I am trying to render an object that has opaque base and gradually becomes clear/translucent at the top in Blender cycles. Please see the attached image (which was not made with blender).
3
votes
1answer
1k views

Render Halo material with tranparent background

I make a "shockwave" using Halo material. It looks nice only for the black background. If I check "Shading > Alpha > Transparent", render result is breaks down. How to fix it?...
20
votes
1answer
31k views

Render shadow on transparent background with Blender Render [duplicate]

I need to render a model on a transparent background. The models have a light source so they should be casting a shadow on a surface (the XY plane). The purpose for this is to overlay the rendered ...
3
votes
1answer
421 views

Animating appearing/extending strip with gaps

As i am new to blender i decided to learn by recreating some animations which have some interesting problems, and gain more knowledge about how tv intros are being done, collecting some parody intros ...
7
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4answers
4k views

How can I reflect a transparent background?

I'd like to make a glossy surface which reflects objects above it, but that also reflects a transparent background in the final render. So in effect, the final render would contain only the ...
8
votes
1answer
23k views

Texture mapping with multiple UV maps

So, as a newbie relatively new to blender, I started doing some texture mapping (blender internal Render). I created a texture for the main object and a couple of transparent decals to decorate it. (...
8
votes
4answers
5k views

Using mask as a garbage matte to hide an object

I'm trying to use a mask to hide a part of a render layer, so that when the render layer is shown over a movie, some parts in the movie will appear to be in front of the render layer. For example, ...
5
votes
1answer
4k views

Can blender use the Alpha channel of an image as transparency on a plane?

I was wondering if I used Photoshop to make a portion of my picture transparent, Would Blender be able to use those transparencies while importing the photo using the Import images as a plane Add-on
2
votes
1answer
929 views

Rendering Environment pass without Combined pass in Cycles

Using Cycles,I have a scene with Volume Scatter shader connected to World Background and an HDR image connected to the surface, Rendering the scene while checking Environment pass is giving me a nice ...
2
votes
3answers
864 views

Transparency/Masking : See through an Outer Sphere and see Inner Sphere in true colours

Summary I want to be able to look through an outer sphere - BlueSphere, and see another sphere inside - RedSphere This is the target goal I'm trying to get to: Issues Here is what I have tried, ...
3
votes
3answers
1k views

Striped Sphere - hide backfaces

I created a sphere and colored its faces in several horizontal stripes like blue, transparent, blue, transparent... etc Pretty much when in Object mode & Viewport shading set to Material the ...
1
vote
1answer
4k views

Change Color Associated with Transparency? [closed]

ok so here is my problem. in this picture i want the White outside the Blue to be Transparent, and the White inside the Blue to to White. this is as far as i get when just using the Transparent BSDF. ...
4
votes
1answer
1k views

EXR color difference to PNG

To avoid the problems that PNG has with fire Transparency, I exported the images in EXR format, but when I compare them to the PNG counterpart, the colours in the EXR image are way to blown out. Why ...
3
votes
2answers
2k views

Cycles not using transparency in decal texture?

I'm trying to apply the logo onto the glossy part and cycles render ignores the transparency and just makes it black. I've tried both png and tga using the multiple builds of blender. And it looks ...
2
votes
1answer
537 views

Images as Planes in Eevee having weird transparency

I have a weird problem with my viewport. As the images show, there are some very basic objects. But some textured objects are shown through other objects, although they should be hidden. It's obvious ...
11
votes
1answer
14k views

My glass material isn't transparent in Eevee

When using Eevee, an object with a glass material (in this case: Principled BSDF, trasmission set to 1.0) doesn't seem like it can be looked through: it's completely opaque. See for instance the ...
4
votes
2answers
2k views

How to get rid of internal shadows/blackness in glass/transparent/refractive materials?

So I'm trying to make some very refractive glass in Blender Cycles. I've tried using the mix shader with Glass, Trasparency, by a factor of Is Shadow Ray + Is Reflection/Trasparency Ray etc, and I've ...
5
votes
1answer
7k views

Making Vertical Gradient, then make top half transparent

So, I would like to make this texture to where I have the gradient going from top to bottom, instead of side to side like in the picture. After that, I would like to make the top half, lets just say, ...
0
votes
1answer
584 views

Is there a Blender alternative to Chroma Key rendering in OpenGL?

Self answered Question - no points being sought here. For some months I've been using a transparency phenomena in Blender's 3D viewport that renders objects that are behind semmi-transparent objects ...
16
votes
1answer
14k views

how to render semi-transparent objects with transparent background as a png with cycles

I am rendering out some bubbles for use in a composite Photoshop image, so I need to render as a transparent png with the bubbles semi-transparent. I tried setting render output to RGBA and checking ...
0
votes
1answer
3k views

I have tried to import EXR files to Davinci Resolve with the LUT's

Here are some pictures of my settings and result: On the right side of this image is the EXR file imported normally, and on the left side is a PNG without transparency. That's the look I want to get ...
10
votes
2answers
28k views

How should a glass material be setup in Cycles?

A glass-shader produces a render like this: Adding a transparent shader creates Where does the border labeled as 1 come from? Why is the outer region (2) more translucent than transparent? Not ...
3
votes
1answer
4k views

Compositing fog destroys PNG alpha in Images as Planes when using Cycles

I'm following Andrew Price's spaceship tutorial and taking advantage of the inbuilt addon called Import Images as Planes. Here you can see 2 Images as Planes used for the steam columns, close to the ...
2
votes
1answer
100 views

Glass casting shadows and not looking real

I'm trying to make these glass planes on the ceiling but something weird is going on with the glass shader. I tried couple of different ones but nothing seems to do the job. I'm talking about shadows ...
9
votes
2answers
1k views

Why should I never ever use “Convert Premul” on Cycles renders?

On this question, When trying to overlay images using Alpha Over for green screen work , I used premultiply Alpha, it was the only option that would give me clean key without the background bleeding ...
7
votes
1answer
1k views

Compositing: When to use premultiplied alpha?

When should one check the Convert Premul box on nodes that use alpha? Secondly, why is there a Premul slider on the Alpha Over node? When would you need it to be something other than 0 or 1? I ...
3
votes
1answer
671 views

Stacking multiple Alpha Planes [duplicate]

I have a simple scene where I have simple planes and textures using the alpha channel of the PNG as transparency. The way I created the files makes the Alpha channel 000 black and 255 pure white. ...
2
votes
1answer
1k views

Partly Ignored PNG Alpha?

I just selected some pixels in Photoshop and deleted them, so this part became transparent. I save it as PNG. And imported this image as texture for cycles material. What surprised me is a "Material" ...
2
votes
1answer
996 views

How Do I Create a self drawing 2D Shape?

Major Noob Question here but I want to create a 2d shape that seems to draw itself like in this video below: https://www.youtube.com/watch?v=YLNmtk67unY I saw in KaptainKrisitan's videos and wanted ...
2
votes
2answers
914 views

Rotoscoping to a transparent background

I'm currently trying to rotoscope a video and the background is currently white and I don't know how to make it transparent. Here is a screenshot:

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