PPU sprite evaluation: Revision history

11 February 2025

• curprev 12:5012:50, 11 February 2025‎ Quietust talk contribs‎ m 8,040 bytes +1‎ →‎Rendering disable or enable during active scanline: fix link

2 May 2023

• curprev 01:5001:50, 2 May 2023‎ Fiskbit talk contribs‎ 8,039 bytes −152‎ Removes a dead link that also isn't on archive.org. The creator of the linked content doesn't appear to be active anymore.

5 November 2022

• curprev 03:4703:47, 5 November 2022‎ Rainwarrior talk contribs‎ 8,191 bytes +49‎ →‎Rendering disable or enable during active scanline: this corruption seems to happen on at least 1 scanline after enable, not sure if more.
• curprev 01:0601:06, 5 November 2022‎ Rainwarrior talk contribs‎ m 8,142 bytes +1‎ →‎References: fix markup
• curprev 01:0301:03, 5 November 2022‎ Rainwarrior talk contribs‎ 8,141 bytes +535‎ →‎Rendering disabled bug: moving main description of this here instead of Errata

4 November 2022

• curprev 23:0223:02, 4 November 2022‎ Rainwarrior talk contribs‎ m 7,606 bytes −3‎ →‎Rendering disabled bug: wiki markup
• curprev 23:0123:01, 4 November 2022‎ Rainwarrior talk contribs‎ 7,609 bytes +281‎ No edit summary

22 January 2019

• curprev 17:5917:59, 22 January 2019‎ Lidnariq talk contribs‎ 7,328 bytes −104‎ rewrite
• curprev 12:4312:43, 22 January 2019‎ Zepper talk contribs‎ m 7,432 bytes +96‎ →‎Notes: Thanks to Mesen source for the important info! It fixes R.C. Pro AM-II (hangs before the race starts).

6 September 2016

• curprev 22:5822:58, 6 September 2016‎ Rainwarrior talk contribs‎ m 7,336 bytes +2‎ →‎Notes: oof, fix another broken link
• curprev 22:5722:57, 6 September 2016‎ Rainwarrior talk contribs‎ m 7,334 bytes +1‎ →‎Notes: fix broken link to OAMADDR
• curprev 22:5422:54, 6 September 2016‎ Rainwarrior talk contribs‎ 7,333 bytes +393‎ rewriting line about OAM corruption due to $2003 explaining this happens before sprite evaluation begins
• curprev 22:0922:09, 6 September 2016‎ Rainwarrior talk contribs‎ m 6,940 bytes −17‎ Reverted edits by Zepper (talk) to last revision by Rainwarrior
• curprev 21:4121:41, 6 September 2016‎ Zepper talk contribs‎ m 6,957 bytes +17‎ →‎Notes: Needless to get related "sprite eval. x sprite zero hits".
• curprev 17:3517:35, 6 September 2016‎ Rainwarrior talk contribs‎ 6,940 bytes −215‎ →‎Notes: this note about the background hiding quirk does not explain what the quirk also does, and also it is not related to sprite evaluation (is a sprite rendering quirk), moving it
• curprev 17:2117:21, 6 September 2016‎ Rainwarrior talk contribs‎ 7,155 bytes +730‎ Creating brief definition for the lead, and trying to unpack the note removed with the last edit into a few notes that are easier to understand.

30 August 2016

• curprev 07:3707:37, 30 August 2016‎ Rainwarrior talk contribs‎ 6,425 bytes −170‎ →‎Notes: removing line of unclear and confusing miscellany, see talk.

20 May 2016

• curprev 02:0602:06, 20 May 2016‎ Zepper talk contribs‎ m 6,595 bytes +170‎ →‎Notes

6 May 2016

• curprev 23:4023:40, 6 May 2016‎ Tepples talk contribs‎ 6,425 bytes +6‎ there usually isn't a reason to have an = h1 = level heading in an article
• curprev 23:3923:39, 6 May 2016‎ Tepples talk contribs‎ 6,419 bytes +20‎ →‎Details: Replace "writes are inhibited" wording (which caused a misunderstanding at http://forums.nesdev.com/viewtopic.php?p=170376#p170376 ) with "secondary OAM is full"

31 May 2015

• curprev 22:5822:58, 31 May 2015‎ Myask talk contribs‎ 6,399 bytes +604‎ Attempted summary.
• curprev 18:4218:42, 31 May 2015‎ Tepples talk contribs‎ 5,795 bytes +156‎ This page needs a rewrite for clarity. Until then, I'm posting a Visual 2C02 log that beannaich made.

22 February 2015

• curprev 15:3815:38, 22 February 2015‎ Zepper talk contribs‎ 5,639 bytes +179‎ →‎Notes: Sprite address & pre-render scanline details.

3 February 2015

• curprev 03:5203:52, 3 February 2015‎ Tepples talk contribs‎ 5,460 bytes +27‎ →‎Sprite overflow bug: begin to address a question raised by Rainwarrior in an edit summary of a recent edit to Errata

12 November 2014

• curprev 04:3704:37, 12 November 2014‎ Koitsu talk contribs‎ 5,433 bytes −33‎ →‎Examples of usage

11 November 2014

• curprev 16:5316:53, 11 November 2014‎ Koitsu talk contribs‎ 5,466 bytes +152‎ →‎Sprite overflow bug
• curprev 16:3416:34, 11 November 2014‎ Koitsu talk contribs‎ 5,314 bytes −12‎ No edit summary
• curprev 16:3416:34, 11 November 2014‎ Koitsu talk contribs‎ 5,326 bytes +7‎ No edit summary
• curprev 16:3316:33, 11 November 2014‎ Koitsu talk contribs‎ 5,319 bytes +9‎ No edit summary

17 July 2013

• curprev 17:4017:40, 17 July 2013‎ Ulfalizer talk contribs‎ 5,310 bytes +180‎ Add internal details on the secondary OAM clear
• curprev 16:1916:19, 17 July 2013‎ Ulfalizer talk contribs‎ m 5,130 bytes +8‎ No edit summary
• curprev 16:1716:17, 17 July 2013‎ Ulfalizer talk contribs‎ 5,122 bytes +1,161‎ Add likely explanation for the sprite overflow bug, derived from Visual 2C02

28 April 2013

• curprev 04:1004:10, 28 April 2013‎ Ulfalizer talk contribs‎ 3,961 bytes +134‎ Break out Notes section and add Visual 2C02 link

21 April 2013

• curprev 18:1018:10, 21 April 2013‎ Quietust talk contribs‎ 3,827 bytes −1‎ No edit summary
• curprev 02:0302:03, 21 April 2013‎ Lidnariq talk contribs‎ m 3,828 bytes +5‎ →‎Sprite overflow bug: "incrementing" is more precise than "bumping"

20 April 2013

• curprev 23:4623:46, 20 April 2013‎ Ulfalizer talk contribs‎ m 3,823 bytes −9‎ No edit summary
• curprev 23:4523:45, 20 April 2013‎ Ulfalizer talk contribs‎ 3,832 bytes +168‎ Clarify sprite overflow bug description

18 April 2013

• curprev 14:5314:53, 18 April 2013‎ Ulfalizer talk contribs‎ m 3,664 bytes +4‎ No edit summary
• curprev 14:5114:51, 18 April 2013‎ Ulfalizer talk contribs‎ 3,660 bytes +173‎ Break sprite overflow bug into own section and clarify a bit
• curprev 14:2814:28, 18 April 2013‎ Ulfalizer talk contribs‎ 3,487 bytes +262‎ Give some more intro and clarify what OAM[n][m] means
• curprev 14:2114:21, 18 April 2013‎ Ulfalizer talk contribs‎ 3,225 bytes +188‎ Clarify why overflow is wonky
• curprev 14:1514:15, 18 April 2013‎ Ulfalizer talk contribs‎ 3,037 bytes +12‎ Small formatting adjustments
• curprev 14:1314:13, 18 April 2013‎ Ulfalizer talk contribs‎ 3,025 bytes +6‎ Indent conditional parts to make the algorithm a bit easier to follow

12 March 2013

• curprev 20:5820:58, 12 March 2013‎ Quietust talk contribs‎ m 3,019 bytes +64‎ offset cycle numbers, confirmed in visual2c02

6 July 2011

• curprev 03:3703:37, 6 July 2011‎ Quietust talk contribs‎ m 2,955 bytes +39‎ explain why the sprite engine is seemingly idle during these points - it's waiting for other things to happen within the PPU

14 January 2011

• curprev 01:2701:27, 14 January 2011‎ Quietust talk contribs‎ m 2,916 bytes +29‎ some clarifications - if you consider what's in secondary OAM at the time, this makes perfect sense

14 December 2010

• curprev 15:1515:15, 14 December 2010‎ Tepples talk contribs‎ 2,887 bytes +42‎ The legend of Drop Out

11 June 2009

• curprev 14:0514:05, 11 June 2009‎ Ndwiki talk contribs‎ m 2,845 bytes +2,845‎ Created page with 'During all visible scanlines, the PPU scans through OAM to determine which sprites to render on the next scanline. During each pixel clock (341 total per scanline), the PPU acces...'