How find sample positions in mulisampling rendering?

Graphics and GPU Programming Programming

Started by pnt1614 February 02, 2016 05:34 AM

11 comments, last by Nik02 8 years, 2 months ago

4,359

February 02, 2016 11:57 AM

Correct, from 10.1 and up you can specify the sample index to load, and you can use SV_SampleIndex.

I used to be a DX MVP back in the day when these things were designed, and 10.1 was themed as "image quality release" due to the various multisampling enhancements as well as some high-precision texture formats becoming mandatory at this hardware level.

Niko Suni

pnt1614

407

Author

February 03, 2016 02:12 AM

MSDN only gives information about 2, 4, 8, 16 samples, how can I know all samples position if we use 256 samples per pixel?

Nik02

4,359

February 03, 2016 09:35 AM

Using 256 samples would imply that you use a very recent GPU and API, in which case you can be sure that GetSamplePosition is available. You can also use GetDimensions method of the multisample texture object to determine the sample count at shader runtime.

Niko Suni