Adding Normal Maps to the Pipeline — Handmade Hero — Episode Guide

2:17Recap yesterday and plan for today

2:55Blackboard: Normal maps

5:28Blackboard: The importance of Normal

6:54Blackboard: What we need in order to compute lighting based on this Normal

8:27Blackboard: Where the Normal map fits into the equation

12:11Blackboard: Description of the surface

14:32Blackboard: Description of the light

16:58Blackboard: Casey's proposal

21:52Blackboard: Blurring based on the surface description

25:28Introduce the concept of a NormalMap

26:54Blackboard: Normals have to be Normal

29:21Introduce Unpack4x8 and unpack the Texels

31:20Similarly unpack the Normals

32:16Blackboard: We often bake the description of the surface into the Normal map

33:11Lerp the Normals

33:55Introduce environment_map

37:22Set tEnvMap from Normal.Z

39:02Blackboard: We might want to switch nearer to 0.25

39:45Setup the environment_map lookups

44:16Create ScreenSpaceUV

46:10Pass that ScreenSpaceUV to SampleEnvironmentMap

46:50Check if there is a NormalMap

47:13Pre-light the Texel

47:53We haven't talked too much about how you compute lighting equations, per se

48:32Take SampleEnvironmentMap and return the Normal for now

51:19Plumbing

53:34Check it out in-game and generate a NormalMap to play with

54:48Blackboard: The NormalMap that we're going to create

55:21Implement MakeSphereNormalMap

58:18Blackboard: Think this through a little more

59:24Throw in a Normal.z calculation for now and finish MakeSphereNormalMap

1:02:43Add Normalize to handmade_math.h

1:03:49Compile and see it in-game

1:04:18Q&A

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1:04:18Q&A

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1:04:18Q&A

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1:05:02dsjimenez Your 2D art already seems to have some shading. Will that just represent ambient lighting when mixed with this dynamic lighting you're trying to do?

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1:05:02dsjimenez Your 2D art already seems to have some shading. Will that just represent ambient lighting when mixed with this dynamic lighting you're trying to do?

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1:05:02dsjimenez Your 2D art already seems to have some shading. Will that just represent ambient lighting when mixed with this dynamic lighting you're trying to do?

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1:05:57miblo In MakeSphereNormalMap, should 'Y < Bitmap->Width;' be 'Y < Bitmap->Height;'?

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1:05:57miblo In MakeSphereNormalMap, should 'Y < Bitmap->Width;' be 'Y < Bitmap->Height;'?

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1:05:57miblo In MakeSphereNormalMap, should 'Y < Bitmap->Width;' be 'Y < Bitmap->Height;'?

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1:06:15tenbroya How far do you think you can increase the capabilities of an engine like this before you start to suffer from performance constraints due to using only the CPU (vs GPU)?

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1:06:15tenbroya How far do you think you can increase the capabilities of an engine like this before you start to suffer from performance constraints due to using only the CPU (vs GPU)?

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1:06:15tenbroya How far do you think you can increase the capabilities of an engine like this before you start to suffer from performance constraints due to using only the CPU (vs GPU)?

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1:07:57stelar7 Don't you need to SRBGToLinear1 the normals or use the normals instead of the texel in the lerp?

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1:07:57stelar7 Don't you need to SRBGToLinear1 the normals or use the normals instead of the texel in the lerp?

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1:07:57stelar7 Don't you need to SRBGToLinear1 the normals or use the normals instead of the texel in the lerp?

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1:09:44pseudonym73 Normal.z = Sqrt(1.0f - Normal.x*Normal.x - Normal.y*Normal.y);

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1:09:44pseudonym73 Normal.z = Sqrt(1.0f - Normal.x*Normal.x - Normal.y*Normal.y);

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1:09:44pseudonym73 Normal.z = Sqrt(1.0f - Normal.x*Normal.x - Normal.y*Normal.y);

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1:12:05timbertoes Is your lighting lookup a similar technique to MatCaps used in other software?

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1:12:05timbertoes Is your lighting lookup a similar technique to MatCaps used in other software?

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1:12:05timbertoes Is your lighting lookup a similar technique to MatCaps used in other software?

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1:12:20lukeultra What benefits do you see from using the extra time it takes to create your own engine from scratch? Is it worth it in your opinion?

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1:12:20lukeultra What benefits do you see from using the extra time it takes to create your own engine from scratch? Is it worth it in your opinion?

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1:12:20lukeultra What benefits do you see from using the extra time it takes to create your own engine from scratch? Is it worth it in your opinion?

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1:12:35pseudonym73 The catch is that it's going to take the Sqrt of a negative number if you're outside the sphere

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1:12:35pseudonym73 The catch is that it's going to take the Sqrt of a negative number if you're outside the sphere

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1:12:35pseudonym73 The catch is that it's going to take the Sqrt of a negative number if you're outside the sphere

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1:14:03We have come to the end of the questions

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1:14:03We have come to the end of the questions

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1:14:03We have come to the end of the questions

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