Tagged Questions
WebGL is extension to Javascript available in modern browser for 3D application development. It is based on OpenGL ES 2.0.
2
votes
2answers
92 views
How to animate a model in WebGL?
I created a human model in Blender, exported the vertices and indices into a JSON file and render the model in a browser using WebGL. Now I created a walk and jump animation in Blender and would like ...
2
votes
2answers
159 views
Repeated textures are severely distorted when rotating camera
Edit 3: This question has been re-posted to StackOverflow, where it probably belongs better. I'd prefer new answers to go there, but I will continue monitoring this site also.
I have a large voxel in ...
2
votes
2answers
183 views
Why is my quaternion camera rotating around strange axes?
I can't get it to work for the life of me. Its rotating the camera in the global coordinate system, or some other random coordinate system, not the camera local coordinate system. WASDEC work ...
3
votes
2answers
117 views
What is UVIndex and how do I use it on OpenGL?
I am a noob in OpenGL ES 2.0 (for WebGL) and I'm trying to draw a simple model I've made with a 3D tool and exported to .fbx format. I've been able to draw some models that only have: A vertex buffer, ...
5
votes
3answers
245 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? ...
1
vote
1answer
79 views
How do I draw a multi-object mesh at once?
This is a very elementary question. At the moment I am drawing lots of faces separately by setting a location uniform separately for each one of them. This is very slow. As I understand it, the ...
2
votes
2answers
145 views
Is there any reason for doing back face culling in software?
I, a newbie, have been doing back face culling in javascript for my WebGL app because I didn't know gl.cullFace() existed. Is there any reason to use software-based culling instead of just passing all ...
2
votes
1answer
172 views
WebGL geometry calculations
I have a dynamic surface in WebGL, that is animated in vertex shader. I want other objects to interact with this surface (for example, an object riding on dynamic terrain). What's the best way to do ...
0
votes
1answer
93 views
3d immersive Virtual Conference meeting environment development on the web (3d website)-Help required
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 ...
5
votes
1answer
268 views
How do I create a blob shadow under a character?
I have a webgl based 2.5D platformer game, and I would like to add a simple blob shadow under the character to help the player with the platforming.
How is this normally done?
As you can see below, ...
3
votes
2answers
368 views
Why must the transpose value of glUniformMatrix4fv in webgl/OpenGL ES be false?
Why must the transpose value of glUniformMatrix4fv in webgl/OpenGL ES be false?
The OpenGL ES spec says that the transpose value must be false or an INVALID_VALUE is generated. Why then have the ...
3
votes
2answers
242 views
Disable V-sync in WebGL?
Normally my app runs at 60 fps, But when I add some simple models it decreases to 40fps.
I think v-sync on, which is might be causing it to run slower.
Is there any way to disable v-sync in WebGL?
...
1
vote
1answer
237 views
WebGL rendering performance and frustum culling
When I render five boxes in WebGL with one texture for all of them, the app runs at 60 FPS, nice. But when I render 70 boxes the performance decreases to ~40fps... but only 5 of the boxes are visible.
...
0
votes
3answers
637 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 ...
2
votes
1answer
264 views
What are the texture coordinates for a tetrahedron
EDIT This is the WebGL code for initializing the tetrahedron points. You may want to skip to the second code block, because you may be able to answer without this.
//Making a tetrahedron with ...
2
votes
1answer
533 views
Unity3d or WebGL: Where should I go?
I am interested in making a simple 3D game this summer, and I'd prefer if it were playable in a browser. My choices I am considering are Unity and WebGL. Currently I have no experience in either. But ...
5
votes
4answers
736 views
Can't understand these UV texture coordinates (range is NOT 0.0 to 1.0)
Hey, hello guys, 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 ...
2
votes
1answer
517 views
How to create a perspective field of view matrix?
Hey, hello. I am learning a little of WebGL (OpenGL ES 2.0) through the http://learningwebgl.com tutorials, but it uses a third party library to create the View, Projection and transformation matrices ...
5
votes
3answers
765 views
How to implement mouselook in the browser?
I am currently creating a 3D first-person shooter game in the browser using WebGL. How would I implement mouselook/free look for such a game?
3
votes
4answers
786 views
Are there any good html 5 mmo design tutorials?
Hey all. I got a rather inspired after playing gaia online's zOMG and wanted to revive an old project idea I've had laying around for a few years now.
I'm looking to work with html5 (ie canvas, svg ...
1
vote
1answer
600 views
Separate shaders from HTML file in WebGL
I'm ramping up on WebGL and was wondering what is the best way to specify my vertex and fragment shaders.
Looking at some tutorials, the shaders are embedded directly in the HTML. (And referenced via ...
7
votes
2answers
580 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
...
2
votes
2answers
584 views
How do I employ an arcball to allow the user to look around the screen?
How do I apply an arcball (using quaternions) along with mouse events, to allow the user to look around the screen using the o3d WebGL framework?
This sample uses the arcball for rotating the ...
14
votes
10answers
3k views
Browser-based MMOs (WebGL, WebSocket)
Do you think it is technically possible to write a fully-fledged 3D MMO client with Browser JavaScript - WebGL for graphics, and WebSocket for Networking?
Do you think future MMOs (and games ...
3
votes
1answer
658 views
Rendering 2d sprites into a 3d world?
In opengl how do I render 2d sprites in opengl given that I have a png of the sprite? See images as an example of the effect I'd like to achieve. Also I would like to overlay weapons on the screen ...
2
votes
2answers
204 views
Does anyone have a sample for drawing a subdivided icosahedron in javascript, that they would be able to share?
Does anyone have a sample for drawing a subdivided icosahedron in javascript, that they would be able to share?
5
votes
3answers
2k views
How do I load Collada models into a WebGL app?
I have written some simple apps following the tutorials on http://learningwebgl.com. What is the simplest way to load and display Collada model files, particularly the files available from Google 3D ...
