Project training of Software College of Shandong University rendering engine system basic renderer (VII)

Preface

This project hopes to implement a basic renderer , At the same time, it can support the use of precomputing . This article focuses on ToneMapping Specific code .
Project address

One 、 Basic logic

If the result is not tone mapped , May be very different from the real color . We add a tone map before the final output , Make the color more reasonable , At the same time, you can customize the exposure , It is mainly used for mapping through functions .

Two 、 Main function code

1、Pass Definition composition

And previous Pass The definition constitutes a similar .

2、 Mapping function

be based on this The mapping function of .

summary

It mainly shows ToneMapping The main code of function realization .