Unity Frame Rates

To reach 60FPS we must update and render each frame in less than 16.67 milliseconds. The time budget for 30FPS is double that, thus 33.33ms per frame.

URP prefers the SRP batcher over GPU instancing, so to make GPU instancing work the SRP batcher has to be disabled. 

We could conclude from this data that for URP GPU Instancing is best, followed by dynamic batching, and then the SRP batcher. But the difference is small, so they seem effectively equivalent for our graph. The only clear conclusion is that either GPU instancing or the SRP batcher should be used.

Vector3 Extensions

public static Vector3 xyz (this Vector3 v, float x, float y, float z) {
    v.x = x;    v.y = y;   v.z = z;
    return v;
}
public static Vector3 xy (this Vector3 v, float x, float y) {
    v.x = x;   v.y = y;
    return v;
}
public static Vector3 xz (this Vector3 v, float x, float z) {
    v.x = x;   v.z = z;
    return v;
}

//calling it
Vector3 v = Vector3.zero;
v.xz(5f,10f);


//============================

public static Vector3 ChangeX (this Transform transform, float x) {
    Vector3 position = transform.position;
    position.x = x;
    transform.position = position;
    return position;
}
// Do the same for ChangeY and ChangeZ
// ...

// Old version
Vector3 position = transform.position;
position.x = 10;
transform.position = position;

// New version
transform.ChangeX(10);

Unity3D - Vector3 to Quaternion

static	vector3	quaternion
vector3.zero	(0, 0, 0)	(0.0, 0.0, 0.0, 1.0)
vector3.back	(0, 0, -1)	(0.0, 0.0, -0.5, 0.9)
vector3.down	(0, -1, 0)	(0.0, -0.5, 0.0, 0.9)
vector3.forward	(0, 0, 1)	(0.0, 0.0, 0.5, 0.9)
vector3.left	(-1, 0, 0)	(-0.5, 0.0, 0.0, 0.9)
vector3.one	(1, 1, 1)	(0.6, 0.2, 0.2, 0.8)
vector3.right	(1, 0, 0)	(0.5, 0.0, 0.0, 0.9)
vector3.up	(0, 1, 0)	(0.0, 0.5, 0.0, 0.9)

3D Program Navigation Cheatsheet

Inheritance

public interface iBaseClass {
  void BaseClassMethod;
}


public class BaseClass : iBaseClass{
   // equivalent to private
   protected internal float accesibleToDerivedFloat = 0f;

   protected virtual void PrivateBaseClassMethod (){
      accesibleToDerivedFloat = 1f;
   }

   public virtual void BaseClassMethod ( //empty ) {}
}

====================================================

public interface IDerivedClass : IBaseClass{
}

public class DerivedClass : BaseClass, IDerivedClass{
   public override void PublicBaseClassMethod (){
      accesibleToDerivedFloat += 1f;
   }
}

Blender Sculpting Shortcuts

• F = Adjust Brush SIZE
• Shift + F = Adjust Brush Strength
• Ctrl = Switch Between Add/Substract

Dependent Texture Reads

Not dependent:
float3 nonDependentTextureRead = tex2D(_MainTexture, input.texcoord).xyz;

Dependent:
float3 DependentTextureRead = tex2D(_MainTexture, input.texcoord.zw).xyz;
float3 DependentTextureRead = tex2D(_MainTexture, input.texcoord.yx).xyz;
float3 DependentTextureRead = tex2D(_MainTexture, input.texcoord*2.0).xyz;

==========================

struct v2f{
 half2 uv : TEXCOORDn; //pass uvs direcly
 half4 packed2uvs : TEXCOORDn; //afraid of dependent texture read, avoid packing 2 uvs into 1 varying
 half4 packed4Scalars : TEXCOORDn; //for general purpose scalar packing
}

tex2D(_Texture,i.uv); //good, fastest
tex2D(_Texture,i.uv.xy); //afraid of dependent texture read, depends on driver?. avoid
tex2D(_Texture,i.uv.zw); //afraid of dependent texture read. avoid

Zbrush Transforms

Zbrush Transforms Demystified

Move

Rotate

Scale

Substance Designer/Painter Usages

Type	Identifier	Usage
Ambient Occlusion	ambient_occlusion	ambientOcclusion
Anisotropy Angle	anisotropyangle	anisotropyangle
Anisotropy Level	anisotropylevel	anisotropylevel
Base Color	basecolor	basecolor
Color ID	id	colorID
Curvature	curvature	curvature
Diffuse	diffuse	diffuse
Height	height	height
IOR	ior	ior
Metallic	metallic	metallic
Normal	normal	normal
Position	position	position
Reflection	reflection	reflection
Roughness	roughness	roughness
Specular	specular	specular
Specular Level	specularlevel	specularlevel
Thickness	thickness	thickness
Transmissive	transmissive	transmissive
User 0	user0	user0
User 1	user1	user1
User 2	user2	user2
User 3	user3	user3
User 4	user4	user4
User 5	user5	user5
User 6	user6	user6
User 7	user7	user7
World space normals	world_space_normals	normalWS

Unity Shader Property Names

Legacy

• _MainTex (Texture, diffuse color in the RGB channels, transparency in the A channel)
• _Color (Color, diffuse color tint. This is multiplied by _MainTex)
• _SpecMap (Texture, specular map)
• _SpecColor (Color, specular color tint)
• _Shininess (Value or Slider, controls glossiness)
• _BumpMap (Texture, normal map)
• _TransparencyLM (Texture, rgb channels define colored transparency)
• _Illum (Texture, for emissive materials. This will be a mask of _MainTex * _Color)

Standard

• Albedo  (diffuse color)
• Normal (tangent space normal, if written)
• Emission
• Specular (specular power in 0..1 range)
• Gloss (specular intensity)
• Alpha (alpha for transparencies)

Physical (metallic)

• Albedo (base - diffuse or specular - color)
• Normal (tangent space normal, if written)
• Emission
• Metallic (0=non-metal, 1=metal)
• Smoothness (0=rough, 1=smooth)
• Occlusion (occlusion - default 1)
• Alpha (alpha for transparencies)

Physical (specular)

• Albedo (diffuse color)
• Specular (specular color)
• Normal (tangent space normal, if written)
• Emission
• Smoothness (0=rough, 1=smooth)
• Occlusion (occlusion  - default 1)
• Alpha (alpha for transparencies)

Unity3D Geometry LOD Stuff

• Level of Detail (LOD)
  "Unity lets you set maximum LOD levels and a LOD bias preference (ie, whether to favour higher or lower LOD levels at threshold distances) in the Quality Settings."

Unity3D Shader LOD Stuff

Unity3D Documentation:

• Shader LOD Values
  VertexLit kind of shaders = 100
  Decal, Reflective VertexLit = 150
  Diffuse = 200
  Diffuse Detail, Reflective Bumped Unlit, Reflective Bumped VertexLit = 250
  Bumped, Specular = 300
  Bumped Specular = 400
  Parallax = 500
  Parallax Specular = 600
  
• Global Shader LOD Setting

Shader Forge:

• Shader Forge Subshader Workaround
  "There's no way to make subshaders in SF at the moment, but you can define a fallback shader and specify the LOD level"

Conversion Chart

Decimal	8bit	Angular
0.05	13	18
0.1	26	36
0.15	38	54
0.2	51	72
0.25	64	90
0.3	77	108
0.35	90	126
0.4	102	144
0.45	115	162
0.5	128	180
0.55	141	198
0.6	154	216
0.65	166	234
0.7	179	252
0.75	192	270
0.8	205	288
0.85	218	306
0.9	230	324
0.95	243	342
1.0	255	360

PBR Spec/Gloss to Metal/Rough

• Invert Gloss to generate Roughness
• Metal must be done manually.
• Diffuse/Albedo is more trick if the material is metallic. Spec color is a base for albedo, since Diffuse is black for metals.

Java Install under Windows

1. Go to http://www.oracle.com/technetwork/java/javase/downloads/index.html and download and install BOTH the JRE and the JDK

2. After they are installed you must add the following to your System Variables:

• JAVA_HOME          C:\Program Files\Java\jdk1.8.0_74 (or whatever your actual install path is)
• JDK_HOME            %JAVA_HOME%\bin
• JRE_HOME            %JAVA_HOME%\jre

Noticeable Differences - Week 9

Major milestone: 20 Minutes on Rowing Machine @ 27s/m

ZBrush Custom Menus

To Create Custom Menus in Zbrush:

1. Preferences/Config/Enable Customize 
   
2. Preferences/Custom UI/Create New Menu
   
3. Name it
4. It will appear along the top menus
5. Drag it to the right most pane to edit it
   
6. Ctrl + Drag Items into the New Menu 
7. To add a Sub Palette, drag it from Preferences/Custom UI/Custom Subpalette (Ctrl + Click SubPalette's name to rename, AFTER it has things in it)
8. When Done, CLICK OFF "Enable Customize" Button
9. Preferences/Config/Save UI 
   
10. Name and Save it.

ZBrush Custom UI

Customizing Zbrush UI

1. Preferences/Config/Enable Customize 
   
2. Ctrl + Alt + Drag Any Button from Any menu to Zbrush desktop
3. Brushes Can ONLY be taken from the Brush Menu on the top. not the icons
   
4. When Done, CLICK OFF "Enable Customize" Button
5. Preferences/Config/Save UI 
   
6. Name and Save it.

Noticeable Differences week 6

- 20 minutes on stationary bike, speed 8mph, resistance 3.
- 10 minutes on Rowing Machine, 24spm
- walking up from Civic Center platform no longer makes legs wobbly. I am not as winded either.
- belt down to 2nd notch
- noticed more definition on arms.

Blender -- Cycles Renderer

Cycles Renderer -- Enable

To enable Cycles rendering in Blender:

1. Select Cycles Render from the 3D View's pulldown.