Multiple Software Render Targets — Handmade Hero — Episode Guide

0:57Recap and set the stage for the day

1:31Debugger: Step into OpenGLRenderCommands() and inspect the Header

2:23handmade_render_group.cpp: Make PushRenderElement_() correctly compute the Entry->Offset

3:51Run the game and see how we're doing

4:45handmade_world_mode.cpp: Make AddStandardRoom() only generate one room, run the game and again assess our situation

5:38handmade_render_group.cpp: Ensure that PushRenderElement_() is correctly setting the Offset

6:27Run the game and see our baseline

6:30handmade_render_group.cpp: Tweak how BeginAggregateSortKey() and EndAggregateSortKey() work

11:04handmade_world_mode.cpp: Revert AddPlayer() to pushing the player sprites in logical order

11:41Run the game and identify that the head can still be sorted incorrectly when we have a cycle

14:12handmade_world_mode.cpp: Make AddStandardRoom() generate multiple rooms

14:42Run the game and find that we're now not getting those blinking tree bugs

16:03Run the game and consult the profiler

17:20build.bat: Switch to -O2, run the game and again consult the profiler

19:24Run the game and demo the problem with alpha blending

20:52handmade_entity.cpp: Make UpdateAndRenderEntities() draw the traversables in red

21:25Run the game and demo the alpha blending problem

22:06handmade_entity.cpp: Make UpdateAndRenderEntities() draw the traversables half as wide as normal

22:36Run the game and most clearly demo the alpha blending problem

23:50handmade_render.cpp: Consider introducing the notion of a coherent block for SortEntries() to use

25:56Run the game and toggle between the software and hardware renderers

27:24Blackboard: Multiple Render Targets

31:46handmade_render.cpp: Make SoftwareRenderCommands() take a TempArena, take a renamed FinalOutputTarget and reserve a second OutputTarget

36:59"Oh, we VirtualAlloc'd that. Wow, aren't we fancy!"^α

37:14handmade_render.cpp: Make SoftwareRenderCommands() pass to PushSize() a call to AlignNoClear(16) in order to align it to 16-byte boundaries

37:41Run the game and see nothing on the screen

37:59handmade_render.cpp: Make SoftwareRenderCommands() copy the pixels from the OutputTarget in the FinalOutputTarget

38:49Run the game and see that we've made our renderer slower

39:03Blackboard: What SoftwareRenderCommands() is now doing

39:37handmade_render.cpp: Consider enabling SoftwareRenderCommands() to render to multiple render targets

41:41handmade_render_group.h: Add a RenderTargetIndex to the render_entry_cliprect struct

43:14handmade_render_group.cpp: Make PushClipRect() take a RenderTargetIndex in order that it can specify the RenderTarget to which it wants to render

44:55handmade_debug.h: Add RenderTarget to the debug_state struct

45:21handmade_render_group.cpp: Make PushClipRect() set RenderTargetIndex

46:11handmade_platform.h: Add MaxRenderTargetIndex to the game_render_commands struct

46:34handmade_render.cpp: Make SoftwareRenderCommands() clone the render buffers based on that RenderTargetCount

49:53handmade_render.h: Change OutputTarget to be a RenderTargets array in the tile_render_work struct

50:21handmade_render.cpp: Make RenderCommandsToBitmap() take a RenderTargets array

52:54handmade_debug.cpp: Make DEBUGBegin set the RenderTarget to 1

53:33Run the game and watch the debug information disappear into that other RenderTarget

54:07Q&A

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54:07Q&A

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54:07Q&A

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54:51popcorn Next week?

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54:51popcorn Next week?

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54:51popcorn Next week?

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56:11necktrox A bit unrelated to the project, but what do you think about the Rust language?

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56:11necktrox A bit unrelated to the project, but what do you think about the Rust language?

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56:11necktrox A bit unrelated to the project, but what do you think about the Rust language?

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56:39billdstrong So when do we think we will be ready for the new graphics assets? I'm excited

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56:39billdstrong So when do we think we will be ready for the new graphics assets? I'm excited

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56:39billdstrong So when do we think we will be ready for the new graphics assets? I'm excited

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57:26sn0uk Can you explain what this game is?

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57:26sn0uk Can you explain what this game is?

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57:26sn0uk Can you explain what this game is?

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59:16Miblo Is writing to that other currently invisible render target much / any less computationally expensive than also sending it to the display?

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59:16Miblo Is writing to that other currently invisible render target much / any less computationally expensive than also sending it to the display?

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59:16Miblo Is writing to that other currently invisible render target much / any less computationally expensive than also sending it to the display?

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1:00:50soysaucethekid With multiple rendering targets, are there other effects you can do other than the alpha blending?

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1:00:50soysaucethekid With multiple rendering targets, are there other effects you can do other than the alpha blending?

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1:00:50soysaucethekid With multiple rendering targets, are there other effects you can do other than the alpha blending?

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1:02:04necktrox Are you going to support shaders and, if so, will you try to support multiple render targets in the shaders?

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1:02:04necktrox Are you going to support shaders and, if so, will you try to support multiple render targets in the shaders?

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1:02:04necktrox Are you going to support shaders and, if so, will you try to support multiple render targets in the shaders?

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1:04:02pandnh4 Are you excited to get an AArch64 toolchain up and running to get this thing to run on a Raspberry Pi 3?

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1:04:02pandnh4 Are you excited to get an AArch64 toolchain up and running to get this thing to run on a Raspberry Pi 3?

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1:04:02pandnh4 Are you excited to get an AArch64 toolchain up and running to get this thing to run on a Raspberry Pi 3?

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1:04:37lord_marshall_ Are you still working full time? Why only stream one hour a night?

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1:04:37lord_marshall_ Are you still working full time? Why only stream one hour a night?

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1:04:37lord_marshall_ Are you still working full time? Why only stream one hour a night?

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1:04:50se24vad How would you go about rendering huge tilemaps? Some batching techniques, or any tips?

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1:04:50se24vad How would you go about rendering huge tilemaps? Some batching techniques, or any tips?

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1:04:50se24vad How would you go about rendering huge tilemaps? Some batching techniques, or any tips?

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1:06:05billdstrong Would that be a good technique to use to create an overhead map?

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1:06:05billdstrong Would that be a good technique to use to create an overhead map?

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1:06:05billdstrong Would that be a good technique to use to create an overhead map?

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1:07:16insobot Soa and aos questions can be made with as minimal interference in timing the host operating

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1:07:16insobot Soa and aos questions can be made with as minimal interference in timing the host operating

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1:07:16insobot Soa and aos questions can be made with as minimal interference in timing the host operating

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1:07:37Close down

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1:07:37Close down

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1:07:37Close down

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