All Questions
35
questions
1
vote
0
answers
49
views
If alpha is 0, RBG is 0 even with premultipyAlpha to false
I have a 3D model with a RGBA texture where the alpha value should be ignored (I must use those alpha values differently for some reflections effects).
PNG specs say : colors are not premultiplied by ...
- 23
0
votes
1
answer
130
views
webgl: geometry texture missing after gl.bindTexture
there is a textured cube in my scene, and it renders well untill i draw a quad, then cube tuxture is gone, here is the render flow:
// draw the texture cube
gl.render(scene, camera);
// draw a ...
- 429
0
votes
0
answers
268
views
How to smoothly fade 2 textures without alpha in GLSL?
I'm doing a shader to apply dynamic textures on a terrain chunk generated with ThreeJS.
The tilemap is used to define where each textures is supposed to take place.
E.g.
The tile used:
Here's the ...
- 23
0
votes
1
answer
308
views
Split up R, G and B channels of texture – apply linear filtering to a subset of them in Three.js/WebGL/Shaders
I am working with a height texture that is retrieved from a server. It encodes the overall height value per pixel within the RGB channels. To get a height value per pixel, the R channel is multiplied ...
- 45
1
vote
2
answers
1k
views
three.js distortion, color replacement on glb (gltf) models. Blue changes to green, and yellow changes to orange
Distortion, color replacement on glb (gltf) models. Blue changes to green, and yellow changes to orange.
v106 three.js
v97 GLTFLoader.js
0
votes
1
answer
876
views
Threejs - Best way to render image texture only in a portion of the mesh
I have the .obj of a T-Shirt, it contains a few meshes and materials and I'm coloring it using a CanvasTexture fed by an inline svg.
Now I should add a logo at a specific location (more or less above ...
- 1,432
2
votes
1
answer
311
views
Geometry instancing with one shader but multiple textures
I'd like to add a second crate texture to the shader using the shader/technique provided with this example:
https://threejs.org/examples/#webgl_buffergeometry_instancing_dynamic
I figured I could ...
- 41
0
votes
1
answer
2k
views
Point cloud texture alpha blending (THREEJS)
I use ShaderMaterial to create point cloud with attribute based size and opacity.
I also need to texture map. The problem is that texture is rendered without transparency.
Looks like each texture ...
- 2,533
0
votes
1
answer
1k
views
Two Textures on one Object Three js
My goal is to render two different textures on one object.
I'm trying to render the earth with a night texture and a day texture, similar to this: http://stuffin.space .
The problem is that I'd ...
- 179
1
vote
1
answer
2k
views
Three js texture edge pixels being stretched
I'm trying to display a texture within a sphere where the sphere is acting as a mask. I have my texture correctly displayed but I can't get my head around how to remove the edge pixels that are being ...
- 377
0
votes
0
answers
314
views
How can I use an array texture in threeJS?
Is there a way to send an array texture from ThreeJS to my shader? I know one example using Data2DTextureArray, but I would like to send an image.
- 107
0
votes
1
answer
1k
views
Three.js custom shader not displaying
I recently started learning about shaders and three.js. I tried to display a shader with a texture but it displays all black.
Here's the codepen: https://codepen.io/LDB95/pen/MxmWNq
These are my ...
- 35
3
votes
0
answers
757
views
Error: GL ERROR :GL_INVALID_OPERATION : glTexImage2D
We are developing a kind of 3D graph. We are using Angular with Three-full NPM (https://github.com/Itee/three-full). We are implementing the Nodes as particles and we are drawing them with shaders.
...
- 31
1
vote
1
answer
2k
views
How to use alpha map textures with ShaderMaterial in Three.js?
I have a png image (16x16) that I want to use as an alpha map texture, in a custom material THREE.ShaderMaterial. This is the image:
This is the setup for my preloaded Texture object:
alphaMap....
- 1,423
0
votes
0
answers
81
views
texture Coordination in simple 2d world (THREE.Points) without UV
I want to load an image in THREE.Points and I'm using bufferGeometry without uv attribute and shaderMaterial
can anyone explain me what is vu and why I need it? I have a 2d world (all points have z=0 ...
- 373