WebGL is a Javascript API for rendering interactive 3D / 2D graphics on the HTML5 canvas element. It is based on OpenGL ES 2.0.

learn more… | top users | synonyms

0
votes
1answer
130 views

Is it possible or not to share a geometry among many meshes and apply a different shaderMaterial for each?

I instantiate one PlaneGeometry, then I instantiate 200 meshes sharing this geometry and with their own instance of a given shaderMaterial. Here is a simplified version of the code : ... var geom = ...
0
votes
0answers
18 views

Unity3D - Upload a image from PC memory to WebGL app

I need user to upload his(her) avatar picture from PC to game How can I create a file dialog and upload a image to WebGL game?
1
vote
1answer
204 views

Create a WebGL native plugin

I am trying to create a WebGL plugin and I read in the docs here: http://docs.unity3d.com/Manual/webgl-interactingwithbrowserscripting.html But I'm not sure I understand. I created a file in ...
-1
votes
1answer
49 views

WebGL - Open URL in new tab? [closed]

How to open URL in new tab for WebGL? Tried Application.OpenURL("url"). But it's opens a tab in same window Thanks
0
votes
0answers
23 views

Unity WebGL Facebook and Google+ Share

I'm creating game for WebGl on Unity 5.3.0 I need to share a screenshot to Facebook and Google+ from user's profile Already created an app on Facebook Developers site and downloaded latest Facebook ...
0
votes
0answers
14 views

Parse RestAPI in Unity WebGL build not working on Google Chrome

I am trying to integrate Parse in Unity Webgl build. As there is no specific SDK for WebGL provided by parse so for parse communication i am using RestAPI to Get the data from parse. As provided in ...
1
vote
0answers
57 views

Cell Based Simulation

I'm working on a cell based simulation in a pixel shader (webgl, shadertoy.com specifically), but am having some challenges trying to make the simulation consistent. Each cell (pixel) has the ...
0
votes
2answers
182 views

Fragment shader compiling in webGL but not in OpenGL

I am programming in Haxe (language compiling to multiple platforms) and I have written some shaders. My fragment shader runs fine in html5, but when I try to compile for native (OS X and/or Neko, a ...
3
votes
1answer
45 views

How to hide a post-processed mesh outline when/where the mesh is hidden

I'm working on setting up an active outline in my 3d engine, a highlight effect for selected 3d characters or scenery in the screen. After working with the stencil buffer and getting some ...
1
vote
1answer
81 views

White dots artifacts when applying borders to hex tiled geometry

I have a hexagon tiled geometry I created in Blender Which I then load in WebGL, using THREE.js library. Below is the loading code, I've cut the code of creating scene, lights, etc. I create ...
0
votes
1answer
277 views

Unity WebGL not loading on chrome

I've made a simple game but when I tried to load this on chrome its not loading. I am building for WebGL (HTML 5). I am getting these errors when the page loads. Unity version - 5.3.1f1 Chrome ...
0
votes
1answer
128 views

Unity 3D error when compiling to WebGL: Destination directory not found

When I try to compile my Unity project to WebGL in Development mode on Windows 8.1 (and with the latest version of Unity), I receive the following errors (the first one is truncated because it's ...
0
votes
0answers
39 views

WebGL color quantization

I'm making a WebGL game in a 90s DOS games style. I'm trying to use a shader which would quantize colors to get reduced colors look. I found this solution: Palette reduction to pre-defined palette, ...
2
votes
4answers
334 views

How can I scale up sprites but maintain visual quality?

I am using WebGL. I have an isometric grid which contains tiles. Some have 'tree' sprites on them. If I have my tree sprite loaded from a texture with a fixed resolution, when I zoom into the grid ...
2
votes
0answers
39 views

Virtual infinite plane in shadow map

I have a WebGL deferred rendering pipeline, where I'm rendering shadow map with VSM technique. The goal is that the scene, or model, is hovering in space, and in addition to casting shadow on itself, ...
2
votes
0answers
47 views

GPU Spatial Clustering

I have a around 100k points on the screen (that might update). 2D points. The goal is to cluster them into groups, by a constant distance. Meaning, finding groups of points that the distance between ...
3
votes
1answer
39 views

Timers and performance for mobile JS

I'm using the Three.js JavaScript library to do some things in WebGL, and I wonder how the graphic aspects of timers are done on mobile. I was creating numbers with geometries and just replacing them ...
1
vote
0answers
26 views

How to use quaternion on another referential

I'm new on Three.js and despite a mechanical background, I can't find how quaternion works: it's like it always refers on local part referential and not the global one. I've illustrated it here : ...
1
vote
1answer
89 views

Unity — custom shader behaves differently on WebGL deployment (correct) and editor view (incorrect)

I started working on shaders and lighting on Unity3D 5.2.1f1. I set up a scene where the sun object rotates the directional light (the only light in the scene) based on its position to simulate a ...
2
votes
0answers
40 views

Understanding webgl min/mag filter texture artifacts in orthographic projection?

Summary Flickering and shimmering of image plotted on a geometry where the viewport exceeds the size of the screen. I am using an orthographic projection for the camera. In this case, it is tied to ...
1
vote
0answers
14 views

Unstable behavior when applying impulse

I created a video that describes the problem since it very hard to explain it. Basically, using physi.js, I am applying random impulse on the object. In the video, at 0:17 the problem begins when the ...
5
votes
4answers
4k views

Can't understand these UV texture coordinates (range is NOT 0.0 to 1.0)

I am trying to draw a simple 3D object generated by Google SketchUp 8 Pro onto my WebGL app, the model is a simple cylinder. I opened the exported file and copied the vertices positions, indices, ...
1
vote
2answers
69 views

WebGL Multiple Lights, Blending, and Render Order

I am trying to do simple forward rendering for multiple lights using additive blending in WebGL. Following advice from this SO and this one, I simply turn on blending using glBlendFunc(GL_ONE, GL_ONE) ...
2
votes
1answer
56 views

WebGL - send part of texture to GPU

I have a matrix of pixels in RAM memory, e.g. 1000x1000 pixels. I send it to GPU using gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, 1000,1000, 0, gl.RGBA, gl.UNSIGNED_BYTE, pixels); Which works great. ...
0
votes
0answers
57 views

Error while running Unity WebGL build on MAMP localhost

I have built my game for WebGL platform and tried to run it on MAMP localhost. I am getting the following alert message in Google Chrome (Version 44.0.2403.125 (64-bit)) and in Safari (Version 8.0.3 ...
0
votes
0answers
39 views

Pass uniforms to Filter's shader

I wanna implement this shader (https://www.shadertoy.com/view/MslGWN#) in PhaserJS state. So i transformed the shader to WebGL style. I overload Phaser.Filter's update function to pass iChannel ...
0
votes
0answers
67 views

How to properly use large texture that is not power of 2?

I'm making a 2D game, rendered using WebGL (using ANGLE, which means that on Windows DirectX is actually used). This is desktop-only game, but would be great to be compatible with integrated graphics ...
0
votes
2answers
130 views

WebGL techniques for normal mapping on morph targets?

I'm currently morphing some meshes by interpolating their positions and normals between target arrays, on the GPU, in WebGL. Now I need to apply normal maps to those morphs. For normal maps on ...
1
vote
2answers
296 views

Applicaton.ExternalEval(String script)

I was wondering, if Application.ExternalEval(String script); in Unity3D can return something. Like:String playerName = Application.ExternalEval("prompt("Please enter your name", "player1")"); Thank ...
1
vote
2answers
668 views

Omni-directional light shadow mapping with cubemaps in WebGL

First of all I must say, that I have read a lot of posts describing an usage of cubemaps, but I'm still confused about how to use them. My goal is to achieve a simple omni-directional (point) light ...
5
votes
2answers
390 views

Low quality bilinear sampling in WebGL/OpenGL/DirectX

I'm seeing low quality bilinear texture sampling in WebGL, OpenGL and Directx, and was wondering if anyone knew how to make it higher quality? The picture below should help show what I mean. The ...
3
votes
0answers
277 views

LibGDX's HTML project doesn't show anything in Browser

The question is self explanatory, when I run my demo-html project as a Web Application and I open Chrome with the provided link by eclipse, my browser doesn't show the image it is supposed to show in ...
1
vote
1answer
145 views

WebGL half float equivelant?

I'm trying to find a half float for the purposes of doing math in a fragment shader, not trying to have a half float texture. Is there an equivalent of the half float data type in WebGL? I know you ...
1
vote
1answer
206 views

Techniques for drawing lines, with mouse, on 3D objects in WebGL or OpenGL?

Can anyone point me to techniques for drawing lines, with the mouse, on 3D objects in WebGL or OpenGL? Here's the effect I'm looking for, using WebGL: http://www.spacegoo.com/cadillac/ I can imagine ...
0
votes
0answers
39 views

Phaserjs, filters, save to image cache

I've tried to apply a Pixi filter to a image and save it to cache but the image doesn't get saved with the filter. colorMatrix = new PIXI.ColorMatrixFilter(); colorMatrix.matrix = [0,0.0,0.5,-0.2, ...
5
votes
2answers
891 views

How can I tell a fragment shader to not write a particular pixel?

In a WebGL I'd like to send a screen space quad through that gets processed by a fragment shader, but have the fragment shader only write out a pixel under certain conditions (say... that it was ...
1
vote
0answers
41 views

Array of script class references in inspector

I'm trying to remove the Reflection part of ones of my scripts so it works in WebGL, however I am having some trouble. Basically I need a way to store references to classes in an Inspector array so ...
0
votes
2answers
793 views

Three.js: Lighting not calculating correctly on THREE.Geometry objects

I have a three.js (REVISION: '68') issue with the lighting of THREE.Geometry objects: I'm using the THREE.Geometry class to build up objects using vertices and faces, then I computeFaceNormals() ...
1
vote
1answer
97 views

How are CSS and WebGL coordinates related? [closed]

I'd like to build a simple framework which rendering combines web page DOM elements with WebGL, such that they're manipulable in the same coordinate space. How does the plain CSS coordinate system ...
16
votes
3answers
7k views

Is there a way to use an arbitrary number of lights in a fragment shader?

Is there a way to pass an arbitrary number of light locations (and colors) for the fragment shader, and loop over them in the shader? If not, then how are multiple lights supposed to be simulated? ...
0
votes
0answers
69 views

possible way to bring canvas 2d animation in canvas webgl context

when added 2d animation canvas in 3d webgl canvas as texture, 2d animation and 3d animation both stopped working. Any reference for this.
0
votes
1answer
270 views

WebGL (three.js) - rendering object behind camera far plane

I need to have one object that is always visible/rendered (a lens flare, to be exact). I don't want to set the camera far plane to the maximum possible distance between camera and the sun (performance ...
3
votes
1answer
213 views

How to implement user friendly screen panning on 3D HTML canvas for RTS game

How can I get RTS map panning like how it was done in C&C red alert (with the mouse at the edge of the screen moves the screen in that direction) with a Babylon.js RTS game in the html canvas? ...
4
votes
2answers
177 views

Confused about Max Vertex Uniform Vector limit

While coding my WebGL app I've encountered an interesting phenomena: On my first PC (with GPU Radeon HD 5850), BrowserLeaks (link) tells me that in my browser - Google Chrome Version 36.0.1985.143m ...
0
votes
1answer
111 views

JavaScript THREE.js webgl spotlight rendering

I'm playing with webgl/JavaScript/THREE and a spotlight. And I see unexpected results. And I don't understand what's going on, and I'm hoping you can point me in the right direction. In my particular ...
0
votes
1answer
100 views

Compress 16 bit raw data in webgl

I have a 3D volume where every voxel is 16 bits. Is there anyway I can use some kind of compression to store the data so I can use less video ram? Webgl supported different compressiosn if you enable ...
0
votes
1answer
65 views

How can I make a flapper game that scales to multiple aspect ratios?

So I've never made a game before besides a basic 4:3 aspect ratio flapper, so bare with me. Recently I had this wild idea that I wanted to make this complected (for a 2d) game in cca. Unfortunately ...
10
votes
3answers
2k views

Missing features from WebGL and OpenGL ES

I've started using WebGL and am pleased with how easy it is to leverage my OpenGL (and by extension OpenGL ES) experience. However, my understanding is as follows: OpenGL ES is a subset of OpenGL ...
0
votes
1answer
139 views

Backface culling without light leaking through

I want to be able to see through walls, so to do this I used planes for the walls, and enabled backface culling. However with shadow mapping I have a lot of light leaking through: I read that using ...
4
votes
1answer
2k views

(Three.js) - What object3D properties are required to make rayCaster.intersectObjects() work?

FYI, i am trying to do something almost identical to the following: Merging geometry/mesh without losing benefits I essentially have a list of Three.object3D's. These objects are "merged" together ...