[0:01][Recap and set the stage for the day debugging our :font glyph PNG writer][:speech]
[4:59][Reacquaint ourselves with PNGFilterReconstruct()][:research]
[7:11][Try running test_png on the known-valid shot4_2.png][:admin :"asset system"]
[8:26][Craft a line that exports our :font glyphs and extracts liberation_mono_0089.png to .bmp[ref
site="Ascii Table"
url=https://www.asciitable.com/]]
[11:32][Invoke our test line to see that our .bmp output works, but for being upside-down][:admin :"asset system"]
[13:19][Reacquaint ourselves with the pre-multiplication of alpha in our PNG loader and .hha font extractor][:"asset system" :research]
[15:27][Prevent LoadGlyphBitmap() from pre-multiplying alpha, and instead produce a monochrome bitmap][:"asset system"]
[16:54][Run our exporter–extractor to see our monochrome .bmp][:admin :"asset system"]
[17:16][Make LoadGlyphBitmap() flip the bitmap's rows][:"asset system"]
[18:09][Run our exporter–extractor to see that our .bmp is off-by-one row][:admin :"asset system"]
[18:38][Fix LoadGlyphBitmap() to pad the image equally top and bottom][:"asset system"]
[19:13][Run our exporter–extractor to see our 1 pixel border][:admin :"asset system"]
[19:23][Determine to make our PNG writer comply with the PNG spec][:speech]
[20:40][Combine the PNG writer and reader, switching WritePNG() to write to a stream and introducing OutCopy(), OutStruct() and OutStructCopy()][:memory]
[27:22][Switch WritePNG() to use our new OutCopy() and OutStructCopy()][:"asset system"]
[33:06][Initialise a stream for WritePNG() to use][:"asset system" :memory]
[37:47][Delete our .png glyphs, run and crash png_test][:admin :"asset system"]
[40:20][~remedybg bug: Run-to-cursor switches focus from source to disassembly (if the latter was not open, opening it)][:admin]
[41:17][Step through WritePNG()][:"asset system" :run]
[45:18][~remedybg bug: Opening a recent session creates a breakpoint][:admin]
[46:00][Step through ParsePNG() in test_png to see that the Signature is wrong][:"asset system" :run]
[49:11][Run hhfont and fail to see the printout][:admin :"asset system" :font]
[49:42][Respecify DumpStreamToCRT() as DataStreamToFILE()][:"file io"]
[50:42][Run our exporter–extractor to see that we're producing the .bmp again][:admin :"asset system"]
[51:11][Run test_png on the known-valid shot4_2.png and compare its ZLIB header with one we produced for liberation_mono_0089.png][:admin :"asset system" :"file format"]
[52:00][Consult the ZLIB spec[ref
site=IETF
page="ZLIB Compressed Data Format Specification version 3.3"
[1:39:30][Fix WritePNG() to exclude the length field from the CRC][:hashing]
[1:42:08][Run our exporter–extractor and crash test_png, but find that pngcheck and GIMP recognise our .png as valid][:admin :"asset system"]
[1:44:23][Run our exporter–extractor on the correct directories, and determine that we're in the clear][:admin :"asset system"]
[1:45:08][Q&A][:speech]
[1:46:35][@somebody_took_my_name][Q: I thought there should be an error because the type was endian swapped before the CRC was calculated, but apparently that is how it works]
[1:47:14][@pythno][Q: Hi [@cmuratori Casey], I think you would enjoy Revision demopary. There are plenty of people yelling "Amiga" frequently. And some of the Amiga demos and intros are very, very good[ref
author="Revision Demoparty"
title="Revision 2019 - Compo - Amiga Demo"
publisher=YouTube
url=https://www.youtube.com/watch?v=zwoyfH7TgEQ]]
[1:47:44][@xxthebigfoxx][Q: What do you think are other fields to look into to get hired as a systems programmer other than the game industry?]
[1:49:33][@somebody_took_my_name][Q: What does the align point for fonts stand for? The offset of a rectangle of size by size?]
[1:49:55][@bts1911][Q: Do you use any standard software development process while creating this game?]
[1:50:21][@teamrandb][Q: I missed it during stream, could you show what an .hht font file looks like?][:"file format"]
[1:52:21][@lucid_frost][Q: Are sampling profilers always strictly worse than adding counting points directly to the binary? I have trouble wrapping my head around the accuracy / quality of sampling][:profiling]
[1:55:43][@teamrandb][How do sampling profilers work? Do they need to pause every thread, or can they take a snapshot somehow and then figure out where the program was?[ref
site=Intel
page="Intel® 64 and IA-32 Architectures Software Developer Manuals"
[2:07:56][@jkfsda][Q: How many game developers are there who actually care about :performance / :optimisation? Isn't most game development just simple things, e.g. made with Unity? Are these game devs that work in Unity as valuable as you said, that they can apply to web-scale companies and get an easy job with high salary?]
