Questions tagged [webgl]
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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WebGL Freeze for some minutes after loading asset bundle
I have to Load/Unload models from a specific URL based on player position. For this reason I am checking player position from model and then load/unload related piece of model in a ...
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1answer
22 views
View Space From gl_FragCoord
Trying to get the example code for CalcEyeFromWindow() (first one on the page) to work in WebGL, but having no luck.
Paired down the code to the following with some explicit values just in case ...
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1answer
110 views
Why WebGL Audio isn't working?
I need to download audio (OGG, Mp3 or wav) from URL and play it.
In Editor is working fine, and also in stand alone build.
But not in WebGL build.
My Code:
...
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0answers
18 views
How can I get Instagram photos from a WebGl unity application?
I need to get Instagram photos, using Instagram API, from a WebGl application.
So instead of going via an intermediate web server:
Instagram -> my webserver -> webGl app
I'd like to instead get the ...
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0answers
111 views
Unity WebGL: how to copy to clipboard text from an inputField?
I would like to know if there is a solution to copy/pase text from/to an InputField in a WebGl Unity app.
Edit: for security reason, Unity WebGL don't allow text copy and paste in/from browser.
...
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0answers
34 views
Do I need a server if I only want to upload data to a DB?
I'm currently creating a game where people get some kind of reports for their game performance on a website. Let's say, you log-in, play the game, the system gathers your performance data and this is ...
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3answers
200 views
Open world loading/unloading with asset bundle in unity
I have a very large environment which I have to load/unload in unity Webgl as I can't load them at once. So, I have divide the environment into 1000 x 1000m (1km) (each chunk is consist of three layer ...
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1answer
35 views
WebGL - two different approaches to Point Light: what is the difference?
So I'm studying Webgl and after directional light I'm approaching point light.
So I've seen two different approaches:
Take the directional light (diffuse and specular components) and multiply them ...
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2answers
121 views
Webgl page heap size increasing in each page load then crash
I am getting aw snap or sometime not enough memory problem when I reload my webgl page. I have a webgl project which is empty (just a camera + light), developed in unity3d. I am reloading it, and ...
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1answer
31 views
How to calculate/structure/define rotation vector for OpenGL / WebGL
I am trying to define the buffer data for WebGL and want to have in there something that encodes the fact that an object might be rotating. So it makes me think of angular momentum. So if you have ...
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0answers
36 views
The gist of tweening with WebGL / OpenGL
I am trying to wrap my head around how to take advantage of shaders for things like tweening.
For example, there are these simple easing equations, which we can use like this:
...
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1answer
76 views
How to use 2D textures in OpenGL / WebGL for physics [closed]
Following along the answer here, it was mentioned about textures:
They can also store things like velocities. For example, you can use a texture as a "flow field" for animating particles or other ...
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1answer
39 views
How to use textures in 2D games in WebGL
I have been trying to figure out how to structure the VBOs in WebGL, and think that keeping them all together in one if at all possible sounds like the best approach. Right now I'm thinking of having ...
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1answer
54 views
The types of buffers typically used in robust WebGL/OpenGL apps
I am trying to get a feel for how to structure WebGL/OpenGL apps and have been looking through sources for the types of buffers they use. I've found these:
uvs
occlusion
noise
bitangents
tangents
...
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0answers
21 views
How to align a particle billboard to the floor of the world
I'm using https://github.com/squarefeet/ShaderParticleEngine and THREE.js to manage particles in my scene. I have a special case where some particle emitters need their particles to align to the ...
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1answer
514 views
“RENDER WARNING: there is no texture bound to the unit 0” When not Rendering Texture
I have a webgl program that sometimes renders textures, but mostly renders triangles or lines. When I am not rendering a texture, webgl gives the warning, "...
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1answer
122 views
How to generate or smooth really large procedural terrain?
I'm currently trying to generate a really large procedural terrain in WebGL. I use a quadtree for LOD and plan to generate 1 heightmap for each quadtree node (terrain patch).
The heightmaps are ...
12
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4answers
2k views
Difference between “buffer” and “array” in OpenGL?
When I read doc on webGL or OpenGL there can be seen some patterns in how names of functions and objects are used. But I can't understand the difference between buffer object and an array.
There are ...
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2answers
192 views
What are “free vertex indices” in WebGL 2 and how do they relate to geometry shaders?
In January Notch tweeted about WebGL 2:
WebGL 2 is happening. Bye, compatibility! Hello, 3d textures and pixel buffers!
oh god it's got free vertex indices in the shader. That is basically a ...
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1answer
123 views
How to use Facebook Web Hosting for my Unity Game for both WebGL and GameRoom
As can be seen from the
Facebook's official Docs
It says that
To have both a Gameroom and a Facebook Web Game, you should leave your Facebook Web Games URL (https) unchanged. For example, https://...
1
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0answers
93 views
How to use model matrix with integer coordinates
I'm trying to generate a real-sized planet with WebGL. After researching, I came to the conclusion that the best way to get around 32-bit float precision issues (since GPUs don't support double ...
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2answers
151 views
Which UVs to use when I have more UVs coordinates than vertices Obj
I have a simple sphere exported from 3DS Max in .obj format. I noticed that I have more UVs than vertices. I parsed the file with a simple program I wrote and then I put the various vertices and UVs ...
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1answer
504 views
WEBGL antialias false to pixel art low resolution
I know this issue maybe repeated and seems to be very common but I searched first and did not find anything concrete.
I am doing some test and playing around with pixijs. I created an stage 320x180 ...
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1answer
367 views
Why is depth test not working properly in my code?
http://jsfiddle.net/w9WqJ/31/
When rotating the camera, some pieces that are supposed to be hidden are displayed. Should I create more triangles or what did I do wrong here?
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1answer
816 views
Change shadervalues for different Meshes in Three.js
Hey I am writing a Shader for Three.js.
My goal is to have multiple objects with the same shader and each object should have a color set on the object that is then given to the shader. The goal is to ...
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1answer
2k views
unity webgl scale page on different sizes of internet browsers on pc or phone
unity only has a fixed resolution for building webgl. how can I make it changebale on users browser size change.
there are some tutorials on the internet that doesn't match. there is only
...
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0answers
262 views
Setting relative anchor point via matrix
The page at https://webglfundamentals.org/webgl/lessons/webgl-2d-matrices.html provides an example for rotating around the center of the image:
...
3
votes
1answer
3k views
lookAt with orthographic camera (gl-matrix)
Technically this is a webgl question though I think it's generic enough to get some opengl, erm, perspective on it too...
If I setup an orthographic camera (perspective matrix) like this:
...
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2answers
148 views
Rendering a 2D tree in WebGL
Assume a tree of objects that need to be rendered, each with their own x/y coordinates.
Now let's say I could crawl through the tree and give each element a "z" coordinate, before rendering.
Is ...
1
vote
1answer
124 views
Viewport for pixelart (WebGL)
I'm trying to display 16x16 pixel art textures (all textures have 16x16), but they are not displayed how I expected (they are ...
0
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1answer
397 views
Unpacking Sprite Sheet Into 2D Texture Array
I am using WebGL 2. A tag for it does not exist but it should.
I have a 10x10 sprite sheet of squares that are 16x16 pixels in size (all in one PNG image).
I'd like to create a 2D texture array out ...
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1answer
220 views
How to adapt a webgl shader using mouse position to have symmetrical behaviour
I'm trying to create a particular kind of effect for the background of my SpriteKit game, and I've found some shaders on shadertoy that are close to what I want, but I'm struggling to adapt them to do ...
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1answer
267 views
Efficient Dynamic Memory Management
My world is procedurally generated. As the player moves, chunks behind them are unloaded and chunks in front of them are loaded. Each chunk has a mesh of triangles.
At the moment, I create two VBOs ...
1
vote
1answer
184 views
Removing/Updating Spritebatch
I am designing a Spritebatch class, for static and dynamic objects with WebGL.
A problem I'm facing is that I have read several different opinions on sprite batching but with one goal.
Put all ...
3
votes
1answer
145 views
GLSL ES 2.0 alternative for dFdxFine
I'm trying to generate normal map on the fly in fragment shader. The implementation I've found is using dFdxFine function, which can't be used in WebGL, is there any alternative for dFdxFine in GLSL ...
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1answer
54 views
Are there any math limitations on the near plane in a perspective matrix?
I've noted that if in the perspective camera I put near plane to a low number like 0.000001 and far plane to 1000 my render has ...
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1answer
851 views
WebGL .NETCoreApp 1.1 - UnityLoader.js - SyntaxError: expected expression, got end of script
After creating a release build of my game using Unity 5.6, I could navigate to the created folder and open the 'index.html' file and my game would load and play normally.
However, when trying to ...
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1answer
323 views
How to display full website in Unity WebGL?
I want to display the complete website within the WebGL in Unity. I have tried Awesomium plugin but it doesn't work in WebGL. Please tell me is there any way to display the webpage.
Thank you.
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1answer
207 views
How to calculate a projection of 360° equirectangular slides?
My goal is to have a light source inside of a transparent sphere that has an equirectangular texture to act as a 360°-slide. I want to get the projection on arbitrary objects as a texture image on ...
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3answers
207 views
Unstable sampled color in GLSL shader
It looks like that sampling the same exact color data from different areas of a texture atlas results in different vec4 in the GLSL fragment shader.
In other words,...
1
vote
0answers
188 views
Clipping drawn mesh by arbitrary volume
I'm trying to create a visual effect where an arbitrary part of the main scene is either clipped out by or cropped to an arbitrary volume. That is to say, I might want to draw just the area of the ...
8
votes
3answers
916 views
Noisy edges, smoothing out edges between faces via fragment shader
I have a generated terrain, with hexagonal geometry, as per screenshot below:
I then generate biomes, but as you can see the borders between them are really ugly and straight. To hide that hexagonal ...
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2answers
3k views
How to rotate something around a fixed point WebGL
I have created a simple robot in webgl with cubes and now i want to rotate one "leg" around a point. But the leg is rotating around its origin. I want to rotate it around the point that connects with ...
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vote
1answer
450 views
2D Websocket WebGL game
Inspired by BrowserQuest, I want to try my hand at making my own kind of game like this but I don't really know anything about game development other than the basics, like how the game loop works. ...
1
vote
0answers
222 views
Texture mapping artifacts at triangle edge (for thin triangles?)
I'm working on generating programmatic textures for 3d models and showing them in WebGL using Threejs. To do this I generate a texture image (PNG) that contains per-triangle textures (a rectangle on ...
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vote
1answer
896 views
2d game with 3d js. game engine
I'm trying to understand if it's possible to create a game where the player can switch between 2d (strategic/bird view) and 3d (actual gameplay) using only the 3d supported JS/HTML5 game engine, like ...
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0answers
377 views
How do I correctly unload an additive Scene in WebGL?
I am creating an app in WebGL. I have a loading scene that I am loading additively:
SceneManager.LoadScene("Loading Scene", LoadSceneMode.Additive);
It loads ...
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1answer
138 views
WebGLRenderingContext.texImage2D does not implement interface ArrayBufferViewOrNull
I'm working on a WebGL project and all my textures render fine.
When i wanted to implement a cubemap i started getting this type error.
...
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0answers
285 views
Unity build error: “Could not find file…build.asm.js ”
I made a WebGL game and the first few times it built well, then I continued working on it a bit and when I build it it gives me an error (and does not generate the build files), error: ...
1
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1answer
193 views
Offsetting ground texture doesn't work in WebGL
so I've created a 2D sidescroller game, the technique I used is to keep the player on the same place, and move the obstacles towards him. I also offset the ground and backdrop constantly to create the ...
