software-mansion / software-mansion/TypeGPU

bug: `writeSoA` does not accept loose schemas on type level

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bug good first human issue good first issue
Dominant language
TypeScript
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Description

See triplanar mapping example.

- export const ModelVertex = d.struct({
-   position: d.vec3f,
-   normal: d.vec3f,
-   uv: d.vec2f,
- });
-
- export const modelVertexLayout = tgpu.vertexLayout(d.arrayOf(ModelVertex));
+ export const ModelVertex = d.unstruct({
+   position: d.vec3f,
+   normal: d.vec3f,
+   uv: d.vec2f,
+ });
+
+ export const modelVertexLayout = tgpu.vertexLayout(d.disarrayOf(ModelVertex));

Contributor guide

Open the contributing guide

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 with the triplanar mapping example and inspect the type definitions involved in writeSoA, vertexLayout, and loose schemas. Reproduce the type-level failure using the ModelVertex and modelVertexLayout example, then verify that writeSoA accepts the loose schema without requiring the struct form.

Written by the indexing model from the issue text.

Assessment

Tech stack
typescript
Domain
computer-graphics
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
65/100

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