mattdesl / mattdesl/kami

Chrome bug w/ attrib locations

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Dominant language
JavaScript
Stars
122
Forks
8
PR merge metrics
No merged PRs in 30d

Description

attribute locations for shaders seem buggy in chrome.

Try running test.js in kami-mesh with normals but leave them out of the main function of the vertex shader so they get optimized away by compiler. The scene will run fine in FF but not in chrome.

Also noticed that specifying vertex attributes manually (see ShaderProgram constructor) is buggy in Chrome.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by running test.js in kami-mesh with normals omitted from the vertex shader's main function, comparing Chrome with Firefox. Then inspect the ShaderProgram constructor and its manual vertex-attribute handling. Done means the shader and manually specified attributes behave correctly in Chrome as well as Firefox.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
computer-graphics
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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