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

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How to display a lot of small objects using WebGL?

Introduction The game scene contains a lot of 10x10 pixel elements: for 1980x1200 px. screen the number of elements on the scene can vary from 0 to 23760 (elements cannot intersect). The live ...
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21 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?
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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
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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 ...
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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 ...
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1answer
322 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 ...
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134 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 ...
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42 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, ...
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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, ...
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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 ...
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1answer
41 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 ...
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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 : ...
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1answer
94 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 ...
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42 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 ...
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1answer
50 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 ...
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15 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 ...
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1answer
85 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 ...
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1answer
213 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 ...
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58 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. ...
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59 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 ...
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40 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 ...
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69 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 ...
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311 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 ...
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397 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 ...
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1answer
150 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 ...
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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) ...
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184 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 ...
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211 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 ...
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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, ...
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2answers
898 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 ...
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279 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 ...
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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 ...
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131 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 ...
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99 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 ...
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70 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.
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272 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 ...
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4answers
336 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 ...
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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 ...
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2answers
817 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() ...
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103 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 ...
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215 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? ...
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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 ...
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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 ...
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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 ...
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66 views

WebGL stereo on Linux

Is there any way for us to use frame-sequential stereo with WebGL without having to boot into Windows and use the DirectX hack?
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2answers
182 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 ...
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1answer
3k views

Orthographic Camera and Raycasting in Three.js

I'm working on a test project porting a simple game from iOS to Javascript. I've got the orthographic camera working and it can view the objects in the scene and move up and down the tower of meshes ...
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315 views

One draw call with one big mesh VS many draw calls with many little meshes

I have read that in order to optimize WebGL application, one should reduce an amount of draw calls. But does it mean that computing a one big mesh from all single meshes on CPU by modifying vertices ...
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1k views

Is HTML5/WebGL performance unreliable on low-end Android tablets and phones?

I've developed a couple of WebGL games, and am trying them out on Android. I found that they run very slowly on my tablet, however. For example, a game with 10 sprites or so runs as 5fps. I tried ...
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160 views

Linking one uniform variable to many shaders

Let's say, that I have 3 programs, and in each of those programs there is a view matrix uniform, which should be the same in all those programs. Right now, when my camera moves, I need to re-upload ...