Brainstorming about Z Bias | Handmade Hero Episode Guide

0:02Recap and set the stage for the day

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0:02Recap and set the stage for the day

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0:02Recap and set the stage for the day

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1:35Fix typos in EditableBoolean(), EditableSize() and Error() as per KimJorgensen's bug report¹

10:41Close issue 90²

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10:41Close issue 90²

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10:41Close issue 90²

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11:42Investigate gingerBill's bug report 'Bug in `PushSize_` that could cause buffer overflow'³

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11:42Investigate gingerBill's bug report 'Bug in `PushSize_` that could cause buffer overflow'³

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11:42Investigate gingerBill's bug report 'Bug in `PushSize_` that could cause buffer overflow'³

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19:34Insert assertions in PushSize_()

23:19Introduce IsPow2()

29:14Test Power of 2

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29:14Test Power of 2

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29:14Test Power of 2

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35:58Carefully scrutinise PushSize_() as per gingerBill's bug report⁴

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35:58Carefully scrutinise PushSize_() as per gingerBill's bug report⁴

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35:58Carefully scrutinise PushSize_() as per gingerBill's bug report⁴

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37:12Explicitly parenthesise the (Used + Size > Size) comparison in PushSize_()

37:56Conclude that the bug report is wrong⁵

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37:56Conclude that the bug report is wrong⁵

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37:56Conclude that the bug report is wrong⁵

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41:22Check out C's operator precedence rules⁶

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41:22Check out C's operator precedence rules⁶

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41:22Check out C's operator precedence rules⁶

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42:34Continue to investigate gingerBill's bug report⁷

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42:34Continue to investigate gingerBill's bug report⁷

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42:34Continue to investigate gingerBill's bug report⁷

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45:29Construct PushSize_() failure cases to address gingerBill's bug report⁸

52:16Step through our PushSize_() test to see that it behaves well

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52:16Step through our PushSize_() test to see that it behaves well

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52:16Step through our PushSize_() test to see that it behaves well

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54:04Construct a PushSize_() test in which our request is right on the boundary

55:47Step through our PushSize_() test to see that it behaves well

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55:47Step through our PushSize_() test to see that it behaves well

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55:47Step through our PushSize_() test to see that it behaves well

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58:01Try allocating 4 MiB as the second, expansion-triggering allocation

58:58Step through our PushSize_() test to see that it behaves well

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58:58Step through our PushSize_() test to see that it behaves well

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58:58Step through our PushSize_() test to see that it behaves well

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59:39Try allocating 4 MiB as the first allocation

1:00:05Step through our PushSize_() test to see that it behaves well

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1:00:05Step through our PushSize_() test to see that it behaves well

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1:00:05Step through our PushSize_() test to see that it behaves well

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1:01:30Close issue 88 with a few words on the helpfulness of concrete repro-cases in bug reports⁹

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1:01:30Close issue 88 with a few words on the helpfulness of concrete repro-cases in bug reports⁹

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1:01:30Close issue 88 with a few words on the helpfulness of concrete repro-cases in bug reports⁹

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1:04:17A few words on judicious unit testing

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1:04:17A few words on judicious unit testing

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1:04:17A few words on judicious unit testing

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1:12:47A final glance at the open issues¹⁰

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1:12:47A final glance at the open issues¹⁰

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1:12:47A final glance at the open issues¹⁰

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1:13:35Consider hiding the assets of disabled alignment points

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1:13:35Consider hiding the assets of disabled alignment points

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1:13:35Consider hiding the assets of disabled alignment points

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1:16:26Consider solving our 2D billboard asset Z-bias problem

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1:16:26Consider solving our 2D billboard asset Z-bias problem

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1:16:26Consider solving our 2D billboard asset Z-bias problem

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1:20:43Set up to express our Z-bias in CompileZBiasProgram()

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1:20:43Set up to express our Z-bias in CompileZBiasProgram()

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1:20:43Set up to express our Z-bias in CompileZBiasProgram()

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1:23:39Sprite Z-bias encoding

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1:23:39Sprite Z-bias encoding

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1:23:39Sprite Z-bias encoding

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1:28:24How CompileZBiasProgram() is currently working

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1:28:24How CompileZBiasProgram() is currently working

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1:28:24How CompileZBiasProgram() is currently working

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1:30:17Adjusting sprite position in Y

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1:30:17Adjusting sprite position in Y

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1:30:17Adjusting sprite position in Y

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1:33:32Imaginary encodings of sprite position and orientation

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1:33:32Imaginary encodings of sprite position and orientation

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1:33:32Imaginary encodings of sprite position and orientation

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1:43:54Don the tennis headband

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1:43:54Don the tennis headband

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1:43:54Don the tennis headband

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1:44:55Understanding ZBias in the case that sprites are drawn exactly upright

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1:44:55Understanding ZBias in the case that sprites are drawn exactly upright

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1:44:55Understanding ZBias in the case that sprites are drawn exactly upright

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1:50:11Understanding ZBias in the case that sprites are drawn lying down a little

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1:50:11Understanding ZBias in the case that sprites are drawn lying down a little

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1:50:11Understanding ZBias in the case that sprites are drawn lying down a little

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1:53:24Projecting in the vertex shader the sprite's Z positions to the passed in Z heights of the world plane

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1:53:24Projecting in the vertex shader the sprite's Z positions to the passed in Z heights of the world plane

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1:53:24Projecting in the vertex shader the sprite's Z positions to the passed in Z heights of the world plane

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1:58:23Q&A

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1:58:23Q&A

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1:58:23Q&A

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1:59:07vapenir Q: What kind of testing (unit, replays, etc.) do you use on 1935 / have you used over the years? Is automated testing even really a thing at game studios?

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1:59:07vapenir Q: What kind of testing (unit, replays, etc.) do you use on 1935 / have you used over the years? Is automated testing even really a thing at game studios?

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1:59:07vapenir Q: What kind of testing (unit, replays, etc.) do you use on 1935 / have you used over the years? Is automated testing even really a thing at game studios?

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2:02:40uplinkcoder Q: Any news on 1935?

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2:02:40uplinkcoder Q: Any news on 1935?

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2:02:40uplinkcoder Q: Any news on 1935?

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2:02:43gunngames Q: For people who don't want to fuss with platform specific code, would you say SDL is a good solution?

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2:02:43gunngames Q: For people who don't want to fuss with platform specific code, would you say SDL is a good solution?

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2:02:43gunngames Q: For people who don't want to fuss with platform specific code, would you say SDL is a good solution?

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2:04:15We're all done

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2:04:15We're all done

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2:04:15We're all done

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