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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2answers
190 views

Need to know the origin and coordinates for 2d texture and 2d/3d vertices in webgl

Long story short, I know my coordinates are off and I believe my indices might be off. I'm trying to render a simple 2d rectangle with a texture in webgl here's the code I have for the vbo/ibo: ...
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1answer
233 views

3d immersive Virtual Conference meeting environment development on the web (3d website)-Help required [closed]

I want to develop 3d immersive virtual collaborative conference meeting environment on the web i.e an immersive virtual environment for our university Teachers to attend and address conference ...
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1answer
13 views

Webgl, weird rendering with sprite that has alpha

So I have a webgl application where I render all kinds of objects, but in this specific example, I have two shaders. One that renders sprites and one that renders colored polygons. In this example I ...
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1answer
37 views

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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1answer
1k 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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1answer
62 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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1answer
117 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
1k 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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1answer
108 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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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 ...
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1answer
149 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
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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1answer
137 views

WebGL wrong scaling of rectangle

I'm working with this tutorial http://www.html5rocks.com/en/tutorials/webgl/webgl_transforms/ and my result is, that the rectangle moves in the direction of it's scaling values, and also scales at ...
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1answer
289 views

Strange quaternion camera streching in WebGL

So after a lot of researching about quaternions I almost got the quaternion camera working. Almost, cause it rotates in a proper way only in a vertical axis. Other rotations stretches and deforms the ...
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1answer
655 views

First person camera world matrix issue (in THREE.js and webGL)

I'm trying to create a Portal-like effect in webGL using THREE.js. I have two scenes connected by a pair of portals. The view of the 2nd scene in rendered inside the 1st portal using stencils and ...
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1answer
135 views

How would one outline an alpha transparency layer in javscript and/or php? [duplicate]

I simply want an outline/edge detection of the character/item/object that is selected or doing something. I'm seeing lots of versions of this question for different languages, but I would appreciate ...
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1answer
472 views

best way of rendering more 3D models in three.js that not slow down page?

I am in the way of creating a 3D web game using threeJS library. This is a multi-player game that players are 3D human models in game, and I need to add a human 3D model for each player that enters ...
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1answer
2k views

How can I implement 3D textures using webgl?

I went through the google I/O video but did not get exactly how to do it. If somebody could point me to a simple 3D texture implementation using webgl, it would be helpful. i basically have a volume, ...
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3answers
2k views

How do I create menu with text in OpenGL?

How would I go about creating a menu system with fonts in OpenGL? I want to make a dungeon crawler and will need a menu for inventory and stats for the weapons. I can draw a world made out of blocks ...
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0answers
31 views

WebGL Primitive Batching unexpected performance

I'm kinda new to WebGL in general, I've started to make some batching experiences on primitives (just drying a bunch of rectangles by using a combination of two triangles repeatedly). I've started by ...
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0answers
28 views

Cannot load native dll in Unity webgl build

I'm trying to use NAudio to get a mp3 (using WWW) into an Audioclip. The thing is NAudio uses Msacm32.dll which I tried adding to the project, but the webgl build still cannot find it. The standalone ...
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0answers
25 views

How to implement mesh subtraction with user interaction in real-time?

I am trying to perform a subtraction on 2 mesh files imported from objloader using THREE.js and ThreeCSG but it is not working as long as the objects are too big or not closed or it will be so slow. ...
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0answers
26 views

Access Unity Webgl output from browser and vice versa

I receive a package of Unity webgl and put that into a course in Wordpress. The index.html produced form Unity is accessed inside an iframe there. This must be able to count user click when accessing ...
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0answers
49 views

Unreal Engine - Why is the size of even the most minimal HTML5 project ~ 155 MB?

I created a new project in UE4 (ver 4.10.4) with "no starter content" and "scalable to 2D/3D" settings. Essentially, there are a total of 5 assets in the project 1) floor, 2) light source, 3) sky ...
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0answers
67 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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0answers
50 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 ...
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0answers
120 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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0answers
52 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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0answers
73 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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2answers
213 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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0answers
42 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
159 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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1answer
348 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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1answer
631 views

(WebGL) Point light per-fragment issue

I'm using an FPS-like camera, this is the code: CAMERA mat4.identity(mat.mvMatrix); mat4.rotate(mat.mvMatrix,degToRad(-camera.pitch),[1,0,0]); ...
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1answer
138 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 = ...
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0answers
32 views

Strauss model : no specular component [duplicate]

I implemented the Strauss model with the metalness, transparency and smoothness parameters, taking the formulas from the book "Programming vertex geometry and pixel shaders", this is how I implemented ...
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0answers
365 views

How can I compute spotlight attenuation when I only have a spotlight cutoff angle?

I am trying to compute the spot light attenuation, though I don't have a spotCosCutoff (cosine of the spotlight cutoff angle) predefined variable in the shader so I have to compute it myself. This is ...
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1answer
1k views

Having a problem with texturing vertices in WebGL, think parameters are off in the image?

I'm having a problem texturing a simple rectangle in my WebGL program, I have the parameters set as follows: gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, textureImage); I'm ...
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1answer
373 views

WebGL CORS error loading simple texture in Chrome

Here's my code: function loadTexture() { textureImage = new Image(); textureImage.onload = function() { setupTexture(); } textureImage.src = "jumper2.png"; } function ...
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0answers
33 views

How do i draw a volume cube and fill it up with a 3D texture in webgl? [duplicate]

Possible Duplicate: How can I implement 3D textures using webgl? I have a set of (x-y) images of the cross-section of an object varying along the z-dimension. From that i have to construct ...
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1answer
73 views

unity webgl not working on server

I own the servers of hokuco.com, I am wondering why my test build(not a development build) is not working in webgl I tried a test run as a .exe and it works fine. here is the url to my webgl project, ...
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votes
4answers
4k views

How can I use WebGL to create a tile-based multi-layer scrolling platform game?

I've found WebGL (based on OpenGL) to be a fiendish and unforgiving framework for those learning to write HTML5-based games. Despite the presence of many examples on how to get started, I'm really ...
-1
votes
1answer
90 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
-2
votes
1answer
339 views

List of GLSL ES built-in variables

I am writing an article on WebGL and three.js, I'm trying to search all the built-in variables available in the vertex and fragment shader. I've found many sites mentioning some, for example: ...
-4
votes
2answers
225 views

enemy shooting towards FPS [closed]

WELL first of all I want you to see my game (its deployed on heroku cloud) : http://still-escarpment-3701.herokuapp.com (It takes almost 10 sec to load so please wait for couple of sec) I have ...
-4
votes
1answer
1k views

How can I create a WebGL camera based on quaternions?

I am trying to create a WebGL camera based on quaternions. I looked at many tutorials, and none is as simple as it could be or it was not working. How can I create such a camera?