MDL_ARGUMENT_BLOCK_SIZE should be 368 for 16 byte struct alignment

Question

MDL_ARGUMENT_BLOCK_SIZE should be 368 for 16 byte struct alignment

hugebean opened this issue 4 years ago · comments

Hello
Some MDL material thrown unknown error when it is 372 bytes, there are 7 program id(int) and 1 hasArgBlock(int), so argBlock's length shoud be 368.

Jakob Progsch · Answer 1 · Fri Jul 03 2020 00:42:00 GMT+0800 (China Standard Time)

Thanks for reporting this. Can you share a way to reproduce this? What material causes that issue?

Lorie · Answer 2 · Sat Jul 11 2020 11:11:55 GMT+0800 (China Standard Time)

Thanks for reporting this. Can you share a way to reproduce this? What material causes that issue?

MDL
module: mdl/nvidia/vMaterial/Design/Ceramic/Porcelain_Cracked
material: cracked_porcelain_china

All objects in my scene use Principled material , class compile type.
I found that when I used Porcelain_Crackedto replace a Principled material which was located in the buffer pool with an even index. An unknown error will be thrown

I tested a lot of materials, some happened, some didn't

Jakob Progsch · Answer 3 · Fri Sep 04 2020 20:05:44 GMT+0800 (China Standard Time)

4464e8e should fix this