Asynchronous Ground Chunk Composition | Handmade Hero Episode Guide

2:40Run the game and identify our slight problem

4:22Why we couldn't generate the ground chunks on a separate thread

6:47handmade.h: Allow PushSize_ to take an Alignment

8:15Introduce AlignmentMask

10:13Blackboard: Turning a power of 2 into a mask

13:03Set the AlignmentOffset based on the AlignmentMask

16:47Go over PushSize_ one more time

17:57Debugger: Step through PushSize_

18:48handmade.h: Add ## __VA__ARGS to these Push* definitions

20:58handmade.cpp: Pass 16 to this PushSize call and run the game

21:57Consider queueing up all of FillGroundChunk

23:16Turn off TiledRenderGroupToOutput

23:40handmade_render_group.cpp: Switch to the player's camera and walk around

24:12On leaving part of what we're doing synchronous

25:48Provide a temporary storage area to enable the background task to work without the data getting overwritten

27:11handmade.h: Introduce GroundChunkArenas

28:55Introduce task_with_memory

29:58handmade.cpp: Create a bunch of Tasks which each create a SubArena

31:47Look at how FillGroundChunk works

32:28handmade.h: Make it implicit in task_with_memory that the memory is temporary

33:08handmade.cpp: Implement BeginTaskWithMemory and EndTaskWithMemory

34:10Do FillGroundChunk if BeginTaskWithMemory is true

36:01Write BeginTaskWithMemory

38:48Put TiledRenderGroupToOutput on the background threads

40:13handmade_render_group.cpp: Introduce RenderGroupToOutput as a non-tiled version

42:21handmade.cpp: Call RenderGroupToOutput

44:27handmade_intrinsics.h: #define CompletePreviousWritesBeforeFutureWrites

45:20handmade.cpp: Clean up

45:51Do AllocateRenderGroup from &Task->Arena

46:55Introduce fill_ground_chunk_work

47:51Put fill_ground_chunk_work into PLATFORM_WORK_QUEUE_CALLBACK

48:30Put fill_ground_chunk_work into FillGroundChunk and fill it out at the end

49:14Call PlatformAddEntry

49:54handmade.h: Implement GetArenaSizeRemaining

51:38Introduce GetAlignmentOffset

52:57Calculate that Result in GetArenaSizeRemaining and clean up

54:25handmade.cpp: Cast GetArenaSizeRemaining to uint32 in FillGroundChunk

56:12handmade.h: Implement SubArena

58:41Walk through our new functionality

1:00:00Debugger: Start stepping through the code

1:04:52Debugger: NextInHash is not valid

1:05:52handmade.h: Put the += Size in the correct spot in PushSize_

1:06:26Debugger: Identify that MaxPushBufferSize needs to take PushStruct into account

1:06:47handmade_render_group.cpp: Conditionally set MaxPushBufferSize in AllocateRenderGroup

1:08:00Debugger: Continue stepping through and note that the TempCount is 2

1:08:38handmade.cpp: Set Task->BeingUsed = true in BeginTaskWithMemory

1:08:52Run the game successfully

1:09:32handmade_render_group.cpp: Reenable the debug camera

1:11:13Q&A

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1:11:13Q&A

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1:11:13Q&A

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1:12:02nicstop If one of the task_with_memory, which has several task_with_memory in front of it, calls EndTaskWithMemory first, will the stuff in front of it be screwed up? Or is this case not possible? Because I have a feeling that I don't understand something

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1:12:02nicstop If one of the task_with_memory, which has several task_with_memory in front of it, calls EndTaskWithMemory first, will the stuff in front of it be screwed up? Or is this case not possible? Because I have a feeling that I don't understand something

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1:12:02nicstop If one of the task_with_memory, which has several task_with_memory in front of it, calls EndTaskWithMemory first, will the stuff in front of it be screwed up? Or is this case not possible? Because I have a feeling that I don't understand something

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1:12:28Blackboard: What goes in the arenas and how they work

1:14:49poohshoes We already had memory reserved for the GroundBuffers. Why couldn't we just use that memory for the threaded stuff?

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1:14:49poohshoes We already had memory reserved for the GroundBuffers. Why couldn't we just use that memory for the threaded stuff?

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1:14:49poohshoes We already had memory reserved for the GroundBuffers. Why couldn't we just use that memory for the threaded stuff?

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1:16:10connorgroove What are the lines on the screen?

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1:16:10connorgroove What are the lines on the screen?

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1:16:10connorgroove What are the lines on the screen?

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1:16:58win32_handmade.cpp: Set OffsetX and OffsetY to 0 in Win32DisplayBufferInWindow for now

1:19:29noxy_key So you've basically constructed a task pool for ground chunks to run on another thread. Can you use this mechanism for other types of tasks as well?

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1:19:29noxy_key So you've basically constructed a task pool for ground chunks to run on another thread. Can you use this mechanism for other types of tasks as well?

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1:19:29noxy_key So you've basically constructed a task pool for ground chunks to run on another thread. Can you use this mechanism for other types of tasks as well?

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1:19:49poohshoes Why not put the stuff at the top of the transient arena (i.e. ground chunk bitmaps) into the permanent storage?

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1:19:49poohshoes Why not put the stuff at the top of the transient arena (i.e. ground chunk bitmaps) into the permanent storage?

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1:19:49poohshoes Why not put the stuff at the top of the transient arena (i.e. ground chunk bitmaps) into the permanent storage?

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1:20:09ankut Why does it flash magenta once in a while? Is it because we're drawing without the work being finished?

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1:20:09ankut Why does it flash magenta once in a while? Is it because we're drawing without the work being finished?

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1:20:09ankut Why does it flash magenta once in a while? Is it because we're drawing without the work being finished?

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1:20:40Wrap things up

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1:20:40Wrap things up

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1:20:40Wrap things up

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