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Results tagged with webgl
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user 44157
WebGL is a Javascript API for rendering interactive 3D / 2D graphics on the HTML5 canvas element. It is based on OpenGL ES 2.0.
4
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answers
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Confused about Max Vertex Uniform Vector limit
How would I find the true upper limit value (and read it inside my WebGL app at the runtime)? … EDIT: Ok, I've found out how to get this parameter inside a WebGL app: gl.getParameter(gl.MAX_VERTEX_UNIFORM_VECTORS), but the question now is how would I adapt it to shaders... …
- 340
2
votes
1
answer
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Omni-directional light shadow mapping with cubemaps in WebGL
My goal is to achieve a simple omni-directional (point) light type shading in my WebGL application. … Also in WebGL depth components are not well supported, so I need to render it to RGBA first. …
- 340
2
votes
2
answers
841
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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 t …
- 340
2
votes
2
answers
2k
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Strange if-else branching behavior in a fragment shader
In my fragment shader I have passed an uniform int uLightType variable, which indicates what type of light is in usage right now. The problem is that if-else branching does not work correctly - the fr …
- 340
0
votes
1
answer
2k
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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. …
- 340
1
vote
1
answer
1k
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Custom lookAt function goes wild
I have written a custom lookAt function based on a lot of posts from all over the net, and it works very nice... except when a rotation (which is stored in a quaternion) crosses some 'threshold'. Howe …
- 340
4
votes
1
answer
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How can I restrict the rotation of an object to a subset of axes using quaternions?
I've got a question about quaternions in my WebGL application.
How can I rotate an object only around two axes? For example, how can I exclude/nullify rotation about the Y axis? …
- 340
0
votes
1
answer
791
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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 …
- 340