kd-11
commented
2 years ago 1.RCB causes problems because of how it detects clobbered memory using tags. This is not good enough. We could just be pessimistic about it and assume everything unlocked needs a reupload, but this is tricky and will eat up performance on some games. I'll have to think about it.
- The reason force CPU blit works is because of 1. Since it never reads any input it always copies over an output of all black. No pixels are detected to change, so no reload.
- The reason reload causes flicker is because SPU is writing stuff (postfx output)_ while RSX is reading it (RCB reload). There are no good solutions here that don't introduce slowdown. I guess I can add the required synchronization and put it under strict mode to get rid of 1 and 3.
Kwangnofx
coffeecodeconverter
casioforever
kryst4line
goldstinger
Evolution0
Quick summary
Gran Turismo 6 has plenty of graphical inaccuracies on RPCS3. There are a lot of different ways to trigger them and many different settings affect the game.
Details
Screen flickers when Write Colour Buffers is enabled. If WCB is disabled, Force CPU Blit can be used to fix that issue. A video will show the issue below.
Car reflections Work incorrectly.
Car Reflections images with different settings.
No Extra Settings.  Read Colour Buffers enabled. Note the black stuff on the Car.  PS3. Gran Turismo 6 uses MLAA, but it does NOT render correctly under normal circumstances. There are ways to make it render, however. This is the most complicated issue with the game. With default settings, it will not have any anti-aliasing. With Write Colour Buffers enabled, MLAA only works if there are no 2D elements on screen. With Write Colour Buffers and Read Colour Buffers, it renders even with 2D elements on screen, at the cost of further broken reflections as show cased in the previous bug. The video below shows the behaviour with only WCB enabled, where 2D elements disable MLAA. The video also shows the flickering issue mentioned earlier. Epilepsy warning. https://www.youtube.com/watch?v=5dnze1i_jU4
Attach a log file
RPCS3.log.gz
Attach capture files for visual issues
https://drive.google.com/file/d/1lu-o8nywQs8xJVNkYlzmx88L-tGvR22z/view?usp=sharing This RSX capture is for the Car Reflections issue. If you want any other captures, let me know and I shall provide them.
System configuration
Ryzen 5 5600x, GTX 1050 Ti driver 516.59, Windows 11.
Other details
The car reflection issue has already been mentioned in #9133, while the MLAA issue has already been reported in #11290, albeit without some information. Let me know if I should make separate issues with each bug or add information to other, already reported issues.