Sorting with Sprite Bounds | Handmade Hero Episode Guide

0:02Recap and set the stage for the day

4:37handmade_sort.cpp: Double check that the sense of IsInFrontOf() is correct

5:46handmade_sort.cpp: Consider how to get sorting into layers for free, and turning the whole renderer into sprite-bound sorting

9:35handmade_render_group.h: Consider excising SortKey entirely from entity_basis_p_result

10:52handmade_render_group.cpp: Make PushRenderElement_() take a sort_sprite_bound rather than SortKey

13:13handmade_sort.cpp: Separate sort_sprite_bound out into sprite_bound and make IsInFrontOf() take sprite_bound

15:01handmade_sort.cpp: Consider which are the correct values to pass to PushBitmap()

17:14handmade_render_group.h and *.cpp: Delete SortKey from entity_basis_p_result

18:55handmade_render_group.cpp: Make PushBitmap() set the SpriteBound.YMin and .ZMax for Upright sprites

23:42handmade_render_group.cpp: Make PushBitmap() set the SpriteBound.YMin, .YMax and .ZMax for non-Upright sprites

25:28handmade_render_group.cpp: SpriteBound

26:32handmade_render_group.cpp: Consider making PushRect() do the same calculations as PushBitmap(), and make Clear() sort below everything

27:48handmade_render_group.cpp: Introduce GetBoundFor() and pull functionality into it from PushBitmap()

29:14Run the game and run into a world of hurt very quickly

30:04handmade_sort.cpp: Introduce GetSortEntries() in order to cast Entries to sort_sprite_bound

32:28handmade_render.cpp: Make SortEntries() call GetSortEntries() and no longer call RadixSort() in favour of MergeSort()

34:25handmade_render.cpp: Pull GetSortEntries() in from handmade_sort.cpp: and introduce GetSortTempMemorySize()

35:23win32_handmade.cpp: Make WinMain() call GetSortTempMemorySize()

36:33handmade_sort.cpp: Make SortEntries() a TIMED_FUNCTION()

37:35Debugger: Step into SortEntries() and inspect the SortKey values for EntryA and EntryB

41:02handmade_sort.cpp: #if 0 the HANDMADE_SLOW code in SortEntries(), run the game and see nothing

42:10handmade.cpp: Make GAME_UPDATE_AND_RENDER() just play the Cutscene

43:00Debugger: Break into SortEntries() and ensure that the sense of the IsInFrontOf() and MergeSort() are correct

47:23build.bat: Disable HANDMADE_INTERNAL and #define DEBUG_ macros in handmade_debug_interface.h

49:06Debugger: Break into SortEntries() and inspect the SortKey() values for the first 8 Entries

50:23Mini Owl of Shame Moment: This is not a front-to-back renderer

50:54handmade_sort.cpp: Make IsInFrontOf() sort in the correct direction

51:47Run the game and find that our fundamentals are not completely messed up

52:35handmade.cpp: Make GAME_UPDATE_AND_RENDER() go straight to the game, and then run the game and determine that we never fail our check in an obvious linear sweep

53:36handmade_entity.cpp: Make UpdateAndRenderEntities() draw entities in Z without flattening them to the plane

54:39Run the game and find that we're not getting the expected sort

55:05build.bat: Enable HANDMADE_INTERNAL

56:08Q&A

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56:08Q&A

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56:08Q&A

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57:05andrewrussellnet Hey Casey, managed to make the stream today. Just wanted to pop in and say hi

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57:05andrewrussellnet Hey Casey, managed to make the stream today. Just wanted to pop in and say hi

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57:05andrewrussellnet Hey Casey, managed to make the stream today. Just wanted to pop in and say hi

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58:40cvaucher The coordinates used for the sort rules are world space, right? Would another approach be to sort the screen space coordinates from the top of the screen down?

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58:40cvaucher The coordinates used for the sort rules are world space, right? Would another approach be to sort the screen space coordinates from the top of the screen down?

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58:40cvaucher The coordinates used for the sort rules are world space, right? Would another approach be to sort the screen space coordinates from the top of the screen down?

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59:14Blackboard: Cases against being able to sort screen space without Z

1:04:46andrewrussellnet I have a question about your development approach: I don't think I've ever seen you create a separate program or environment to test stuff. You always seem to work within the running game. Do you ever find this "noisy"?

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1:04:46andrewrussellnet I have a question about your development approach: I don't think I've ever seen you create a separate program or environment to test stuff. You always seem to work within the running game. Do you ever find this "noisy"?

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1:04:46andrewrussellnet I have a question about your development approach: I don't think I've ever seen you create a separate program or environment to test stuff. You always seem to work within the running game. Do you ever find this "noisy"?

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1:10:17andrewrussellnet I realise I tell a lie now. I have seen you do something along those lines on Witness Wednesdays, just less so on Handmade Hero

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1:10:17andrewrussellnet I realise I tell a lie now. I have seen you do something along those lines on Witness Wednesdays, just less so on Handmade Hero

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1:10:17andrewrussellnet I realise I tell a lie now. I have seen you do something along those lines on Witness Wednesdays, just less so on Handmade Hero

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1:12:47magik603 How do you clean all the directories without deleting them?

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1:12:47magik603 How do you clean all the directories without deleting them?

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1:12:47magik603 How do you clean all the directories without deleting them?

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1:14:25Demo Math Visualizations

1:23:00andrewrussellnet That was really awesome to see! Thanks!

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1:23:00andrewrussellnet That was really awesome to see! Thanks!

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1:23:00andrewrussellnet That was really awesome to see! Thanks!

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1:23:28Close it on up

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1:23:28Close it on up

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1:23:28Close it on up

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