Required size for texture data layout (747936) exceeds the linear data size (560952) with offset (0)

Questions
1

The situation:

I am performing a WebGL to WebGPU migration for an app that previously used a Raw RGB texture to hold vertex positions for a special mesh. WebGPU does not accept RGB textures , so I am padding the data and storing it into a Raw RGBA texture. I attempted to re-create the error in a PG following the same approach used in the application however, I don’t get the error in the PG. I had even broke the data up into two separate textures and received the same result referencing different numbers of bytes but having the same 4/3 ratio. The number of bytes of data to write, which I log, matches the data layout, but the error references 1/3 less bytes.

Application Code:

related_code
related_code1876×1230 220 KB

Error Log in Application:

WebGPU_RGBA_Texture_Violation
WebGPU_RGBA_Texture_Violation1492×342 19.7 KB

Attempt to reproduce the error in a PG:

2

Check highPos.length, you will see it doesn’t have the right value (441*106*4=186984), but 140238 instead (441*106*3).

I’ve reproduced your error:

The “* 3” line 21 should be “* 4”.

1 Like
3

@Evgeni_Popov Thank you so much for the advice.

4

When I log highPos.length I do get 186984 however, the rgbaValues Float32Array based upon highPos is not yielding the proper length. I don’t get it.

updated_log
updated_log2140×1372 304 KB

updated_logs
updated_logs1506×474 18.6 KB

5

@Evgeni_Popov I believe it is another texture with similar dimensions that is causing the problem. I believe I was cleaning the wrong closet.

2 Likes