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.

606 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
6 votes
1 answer
3k views

Separate alpha from color in Shader Editor

In the Shader Editor, I can create an RGB node and in there, I can set an alpha value as displayed in this screenshot: However, no color separation node in blender supports extracting that value and ...
narranoid's user avatar
  • 197
6 votes
1 answer
2k views

How to crop image based on Alpha in Compositor?

I wonder if there is any way to crop a image based on alpha data like this: The reason I want to do this is that I want to crop the White area of another image (of the same dimension to the Alpha ...
Leon Cheung's user avatar
  • 27.6k
5 votes
1 answer
464 views

Which format for saving transparency from bloom and respecting colors (tried PNG/TGA/TIFF/EXR)

TL;DR: How can I properly save a picture with semi-transparent "emit" pixels coming from a bloom? I understand that .PNG can't handle that, but I'd expect TIFF/Targa/.EXR to handle it ...
tobiasBora's user avatar
  • 1,119
4 votes
0 answers
804 views

Simulate light bending due to gravity

I'm trying to demonstrate light bending due to gravity, but my knowledge of Blender isn't up to the job. As a test I have a sphere with the Glassy BSDF shader. The colour is set to white, and I've ...
stib's user avatar
  • 865
4 votes
0 answers
648 views

Alpha textures show only when selected

I'm making a radar display animation (those spinning once) for a movie project. What I do is: Set up a material in cycles to see how it fits together (using b&w images) Create alpha textures to ...
Vladimir's user avatar
  • 4,685
4 votes
0 answers
4k views

Alpha transparency not showing in cycles viewport

Using cycles I have simple cut out people in the scene: planes with .png textures on them. The transparency shows in the material editor and is rendered correctly but is not displayed in the viewport. ...
Booth's user avatar
  • 655
3 votes
1 answer
25 views

How do I over lap three or more render layers in the compositor?

I'm trying to place three images on top of each other using the compositor. I don't really know how to do it, I think I could use the alpha over approach but I'd need to use the alphas of both the ...
sleepy's user avatar
  • 63
3 votes
0 answers
194 views

Why does bloom not work over a transparent background?

I'm using the Eevee engine and the fireworks are emissive particles, bloom is turned on. I tried both eevee and cycles, I want to use eevee though. I tried PNG with RGBA color, 8bit and 16bit color, ...
VoidAnomaly's user avatar
3 votes
1 answer
59 views

Compositing transparency challenge. Particle not part of alpha?

Hey Wicked Smaht people! I have been working on a project that will be super imposed, in photoshop, over another image. So, I have been trying to composite it so that the background is transparent. ...
Matt McKee's user avatar
3 votes
0 answers
585 views

Emission node with alpha blend is colorless in png

I have created the following flame material. You can see that the flame is red and emissive. Otherwise, the rest of the material is invisible, since I have "Blend Mode: Alpha Blend". ...
Captainlonate's user avatar
3 votes
0 answers
225 views

Odd shadow cutout

I'm very new to Blender (10 hours in!), and I'm coming across a problem I haven't been able to successfully google. I have an object casting a shadow on a plane. I'm using an Area light pointing ...
Micke Alm's user avatar
3 votes
0 answers
87 views

Alpha channel not responding to blur?

Here is a still of a shallow focused camera of a few flowers. As you can see the pink flower alpha blend is not responding to the blur... How do I ensure it is blurring like the rest of them?
tiredanonymousperson's user avatar
3 votes
0 answers
23 views

Sculpt Alpha brush/texture add and substract simultanously

Is there a way to use an alpha brush/texture where the dark carves into the mesh while the white extrudes at the same time. I could only figure out that you can set a brush to add or sub but in that ...
Trax's user avatar
  • 31
3 votes
0 answers
2k views

How to render a green screen video with transparent background?

I'm just wondering how to render out an image sequence with no background. The image appears perfectly right in the viewer node of the compositing layout and it also appears perfectly right in the &...
Chris McCusker's user avatar
3 votes
0 answers
240 views

I can't make a sphere blend, with transparency, with another (Earth - Clouds)

sorry for the noob question, but I'm following this tutorial and when comes the part to make the Earth appear "behind" the clouds, it doesn't work. I'm stuck at this for a while and I can use some ...
NeoFahrenheit's user avatar
3 votes
0 answers
382 views

How to remove unwanted refraction (bent-straw illusion) from cycles material?

I am working on a render of Saturn as part of a scale model of the solar system, and have run into a problem with the transparency of the rings. I am using an alpha-mapped png image which seems to ...
Adam's user avatar
  • 88
3 votes
1 answer
439 views

How to apply two different materials in Blender Internal on front faces and back faces, *while involving transparency*

Basically, I want to see through the transparent front faces to the opaque back faces. This isn't the same as flipping all normals and executing backface culling because I want the front faces to be ...
Dragoonstorm1's user avatar
3 votes
0 answers
189 views

I am trying to bake a normal map of a set of objects with transparency

I have been trying to bake a normal map for a clump of grass I want to put in a game engine. The problem I am facing is that whenever I bake the normal map it ignores the transparency texture on the ...
Ryan's user avatar
  • 31
3 votes
0 answers
83 views

How to create an image whose alpha value changes according to a curve through time in node-editor?

I connected an image-node with a composite-node and connected a value-node into the alpha of the composite-node. I changed the values and the image changed its transparency. Then, I connected the ...
Abdul Al Hazred's user avatar
3 votes
0 answers
309 views

How to combine Z-Transparency and Mask Transparency in BI

I have a plane, in front of a cube, with a texture used for alpha. Now i like to use the BI Mask-Transparency to (alpha) hide everything behind the white areas. The black areas should be complete ...
user2488's user avatar
  • 371
3 votes
0 answers
62 views

Cycles texture with alpha doesn't work after using AnimAll for animating UVs

I need a texture to be animated with AnimAll and have transparency at the same time. Is this possible? Here is the .blend file. It is the bird that encounters the problem. I'm trying to make its ...
Brandon's user avatar
  • 191
3 votes
0 answers
2k views

Objects behind partial-transparent objects are masked out when selected

The setup: Display/shade mode is Textured, Shading is Multitexture No objects have materials, they're purely textured in the 3D view using the info assigned via UV/Image editor. No objects have "...
Tom Pace's user avatar
  • 283
3 votes
0 answers
265 views

Lighting a volume with a bi-color point light (2)

This question is a following of this one I would like to light the center of a cylindric volume with a gradient light White -> Red -> Blue radially from the center to the border. I made a test of ...
JeanJouX's user avatar
  • 419
3 votes
0 answers
2k views

Transparent Plane Still Casts Shadow

In cycles render I have a RGBA movie of a man waving that I'm using as a texture on a plane. Using nodes, I can make the alpha channel transparent, but the plane is still casting its rectangular ...
papabrewsky's user avatar
3 votes
1 answer
337 views

How do I make a crystal glow?

I am trying to make the infinity stones and I am struggling to make them glow. This answers doesn't translate to my issue since the solution involves creating a duplicate of the object scaling down ...
Zano's user avatar
  • 31
2 votes
0 answers
93 views

Transparent eyebrow mesh start glowing if subsurface translucency map is added to skin (Cycles)

I'm making a lowpoly game character (using Blender 3.3.1). It is one mesh and has 3 materials on it. The eyebrows/lashes material is transparent. If I add a subsurface translucency map to the skin ...
MSGDI's user avatar
  • 21
2 votes
0 answers
144 views

Grease pencil is showing through objects when I turn on volumetrics

This is with volumetrics on, you can see little pixels of the grease pencil bleeding through objects in the foreground. This is with volumetrics off, here you can see the grease pencil is displaying ...
Slippyv2's user avatar
2 votes
1 answer
112 views

I want to achieve a controlled glass with transparency transparent background

i want to achieve this simple glass morphism effect with no dramatic lighting artifacts, with blurry effect
user157008's user avatar
2 votes
0 answers
262 views

How to make an object transparent but give it color to its edges using nodes?

I'm pretty new here and I have little experience with Blender, and I'm still struggling to understand how nodes work. However, I like Blender a lot and I'd like to ask for help to achieve the effect ...
Jose Lozano's user avatar
2 votes
0 answers
30 views

Why does the edge of my Emission object have dark pixels?

I am trying to render an object with a white Emission material in front of a transparent background, in Cycles and Blender 3.1.2. When the object renders, the edge of the object has black or grey ...
MicroMachine's user avatar
  • 4,611
2 votes
0 answers
927 views

Blender shows transparent .png with bloom when rendering but there isnt bloom when I view it with a photo editor

I am trying to render something with bloom and a transparent background but nothing has worked! I do have the .png with RGBA and blender shows when rendering that there is bloom on the png with a ...
remaster2011's user avatar
2 votes
0 answers
385 views

Can this glass effect be done in Cycles?

I'm pretty new to Blender and I've been asking myself for quite a long time, can Cycles achieve those nice glass dispersion/matte shading like on Redshift/Octane in c4d? Is it possible? I found on one ...
Maya's user avatar
  • 53
2 votes
0 answers
321 views

Blender Refraction BSDF too dark

as you can see in the first picture if i use an refraction shader on a plane in front of the fire/persons it´s way darker then without. I want to use it for an heat distortion because of the fire. I ...
VICUBE Animation's user avatar
2 votes
0 answers
36 views

Adding Volumetic to a scene changes the alpha transparency around my vegetation

I've imported some vegetation from the "tree vegetation addon" Here's what it looks like When I add a volumetric cube (not to the world), to add some fog, It messes up the transparency ...
Louise's user avatar
  • 21
2 votes
0 answers
148 views

My object is not transparent even when screen space refractions are turned on

I'm following a "glitch" effect tutorial (blender 2.91, rendering in EEVEE - not sure which version he's using although it has to be close and he's also in eevee) This image is at the point ...
RichRareRefined's user avatar
2 votes
1 answer
152 views

Adding transparencies in blender grease pencil

I'm trying to shade my drawing in grease pencil, and for that I'm using a layer with Blend set to "Multiply" and a grey material to fill the color. I have multiple objects, trying to rig a ...
euler_42's user avatar
2 votes
0 answers
193 views

Grease pencil layers cant merged keeping mask

Testing around the grease pencil on 2.9 and notice that there s no "keeping alpha" option on the layers, so no choice but using mask. However when the layers are merged the mask effects are ...
Nadonad123's user avatar
2 votes
1 answer
261 views

UV mapping node in the compositor. Why can't I subtract some pixels from the alpha channel with a mask?

On trying to answer this question, I can't subtract information from the alpha channel without running into borders that persist from the UV mapping node. Those borders come from the original image's ...
susu's user avatar
  • 14k
2 votes
0 answers
654 views

Blender 2.9 Cycles: Render issue with Alpha Masked Leaves on Trees

I recently purchased some tree models from Globe Plants specifically for Blender Cycles Render. I'm hoping to get a response from them directly but thought I'd ask if anyone else knew what was ...
Dale May's user avatar
2 votes
0 answers
753 views

Is premultiplied alpha in Blender Compositor BROKEN?

I'm rendering an explosion and adding glow in Blender compositor. I want to use it in a video editor later to composit the explosion on top of other footage. The premultiplied alpha should let me have ...
unfa's user avatar
  • 1,199
2 votes
0 answers
362 views

Transparent alpha channel not working on imported .tif files

I'm trying to import a series of .tif images as planes but I can't get the alpha channel to work. During the import process the Alpha channel box is checked and set to "straight". Under the ...
Felix's user avatar
  • 21
2 votes
0 answers
2k views

How to fill the edges of solidify modifier with alpha material?

So basically I have a simple plane uv unwrapped to this shape on the left. Using color ramp to indicate that all the white area should be used an the alpha channel so the model itself looks ...
ghosts's user avatar
  • 63
2 votes
0 answers
1k views

Automatically cut mesh using alpha maps

I was wondering if it is possible to automatically cut an object depending on the transparent parts in it (alpha map) Is it possible to be cut automatically without using a Boolean mod or knifing? I ...
Mr. Tj's user avatar
  • 21
2 votes
0 answers
913 views

Blender Hold Out Node Not Working

I am trying to render a layer of Rain with alpha to composite with a train animation. I have done this before successfully with volumetrics, but it isn't working now and I cannot figure out why. Here ...
DrIgnatiusCole's user avatar
2 votes
1 answer
306 views

Weird glass reflections

Trying to make a simple glass but the shading is clearly off (for reference it's similar to IKEA's POKAL glass). To add thickness I didn't use a solidify modifier because the outside geometry is a ...
CWoody00's user avatar
2 votes
0 answers
2k views

Transparency showing as black on a mix shader (multiple image textures)

First time here, still pretty new to Blender. I have an object that I've applied an image texture to. The object is a can with a label that wraps around 90% of it. The object's "label" texture ...
Cleat J.'s user avatar
2 votes
0 answers
495 views

How do I make an object transparent but colored?

So I can make a transparent object but... I can't change the color of it. Any part of the object that is in front of another object puts a colored tint on it (That doesn't really matter since the ...
Calder Cockatoo's user avatar
2 votes
0 answers
116 views

Volumetrics don't show through glass

Is it some Eevee limitation or am I doing something wrong ? Here are my SSR and material parameters:
Nad's user avatar
  • 21
2 votes
0 answers
223 views

Blender 2.8 exporting meshes materials with 0 opacity (G3DB/G3DJ) (LibGDX)

I'm attempting to use LibGDX and an fbx-conv to create a 3D game as detailed here. The model loads but does not show so I decided to check the G3DJ file and found that the opacity was set to 0, ...
user11764175's user avatar
2 votes
0 answers
476 views

Texture transparency problem when exporting collada file

I seem to be having problems with my dae objects. I have some space farms and the transparency on the glass is just made using a texture. It looks fine when rendered in blender: But it's for an iOS ...
Emmatron's user avatar

1
2 3 4 5
13