Catlike Coding's C# and Shader Text Tutorials

Directional Lights
Direct Illumination

 

Surface Contact
Staying in Touch

 

Directional Shadows
Cascaded Shadow Maps

 

Orbit Camera
Relative Control

 

Baked Light
Light Maps and Probes

 

Hello, Jasper! Thanks for tutorials from 2020!
Even though it's pretty hard to grasp shaders for dummy like me, but I learned a lot, anyway!
I'll support you as soon as I earn my first money as a game developer

 

@eclipse130300 Cheers! That you may become a successful game developer!

 

I am working my way through the tutorials. In Section 5.1 "Coloring Hexes" the tutorial directs you to "Create a new default shader via Assets / Create / Shader / Default Surface Shader. The latest version of Unity doesn't seem to give you the Default Surface Shader option so I went with Standard Surface Shader. I made the two changes but now I get an "invalid subscript 'Color' d3d11 45" error. Is there another way to create a Default Surface Shader I have missed?

 

@SEdmonds You can copy the entire shader code as well. That error suggests that you've written "Color" instead of "color" so capitalized when it shouldn't be. I guess your line 45 contains "o.Albedo = c.rgb * IN.Color;" instead of "o.Albedo = c.rgb * IN.color;".

 

Thankyou for your quick reply. It was the wrong case in color. I then created a new material using Assets/Create/Material. The tutorial didn't say to give it a color so I left that part blank. I selected the shader option custom/vertex colors. I went into hex mesh and changed the Element 0 to custom_vertexcolors. But when I hit play and click on a hex no pink hexes appear. It does pick up the coordinates without any problem.

 

@SEdmonds Hard to say which step is missing. The touched cell's color must be set to the touch color, which has to be configured but is magenta by default. Then the mesh has to be triangulated anew. If you can't find it then you could grab the unitypackage of that section, import it in a new project, and compare.

 

Custom Gravity
Walking on a Sphere

 

Shadow Masks
Baking Direct Occlusion

 

Hello Jasper! Thank you so much for all of your tutorials. They have helped me so much!
There is however one question I have for you - how did you learn all of this stuff? I am sorry if you get asked this all the time, but I am really interested in your learning process.

 

@unity_-xOrMfFzzO7y3w The generic stuff I learned mostly on my own as a kid, then later a master degree in computer science, and reading lots of published papers. All the Unity stuff is self-study, working with it professionally, and diving into the docs, APIs, and code.

 

Complex Gravity
Gravity Planes, Spheres, and Boxes

 

LOD and Reflections
Adding Details

 

Moving the Ground
Going for a Ride

 

Complex Maps
Masks, Details, and Normals

 

Climbing
Sticking to Walls

 

Point and Spot Lights
Lights with Limited Influence

 

Swimming
Moving through and Floating in Water

 

Point and Spot Shadows
Perspective Shadows

 

Reactive Environment
Movement with Consequences

 

Post Processing
Bloom

 

HDR
Scattering and Tone Mapping

 

Rolling
Animated Sphere

 

Back to Basics
I have upgraded the basics series.

 

Color Grading
Playing with Colors

 

Measuring Performance
MS and FPS

 

Multiple Cameras
Camera Blending and Rendering Layers

 

Compute Shaders
Rendering One Million Cubes

 

Particles
Color and Depth Textures

 

Jobs
Animating a Fractal

 

Render Scale
Scaling Up and Down

 

Organic Variety
Making the Artificial Look Natural

 

FXAA
Fast approXimate Anti-Aliasing

 

Hey, man!

Thanks for your work. It has been really helpful for my quarantine project!

I've done your Rendering tutorials until Rendering 20. Everything worked like a charm, however when adapting it into my project I'm facing 2 errors (been able to figure out 1/2).
I also tried to add your vanilla package to my project and get exactly the same errors...

Errors:


I've been able to solve the first error by incrementing the following TEXCOORDS variables (inside both the 'Interpolators' and 'InterpolatorsVertex' structs):

Code (CSharp):

1.  
2.     #if defined(LIGHTMAP_ON) || ADDITIONAL_MASKED_DIRECTIONAL_SHADOWS
3.         float2 lightmapUV : TEXCOORD6;
4.     #endif
5.  
6.     #if defined(DYNAMICLIGHTMAP_ON)
7.         float2 dynamicLightmapUV : TEXCOORD7;
8.     #endif
9.  
10.     #if defined(_PARALLAX_MAP)
11.         float3 tangentViewDir : TEXCOORD8;
12.     #endif

However, I'm unable to fix the second error. The error says:

Code (CSharp):

1. Shader error in 'Custom/Paper Squiggly': invalid subscript 'pos' at Assets/AP/Assets/Animations/Shaders/PaperSquiggly/PaperSquigglyLight.cginc(366) (on d3d11)
2.  
3. Compiling Vertex program with DIRECTIONAL SHADOWS_SCREEN SHADOWS_SHADOWMASK LIGHTPROBE_SH LOD_FADE_CROSSFADE _SQUIGGLE_ON
4. Platform defines: UNITY_ENABLE_REFLECTION_BUFFERS UNITY_USE_DITHER_MASK_FOR_ALPHABLENDED_SHADOWS UNITY_PBS_USE_BRDF1 UNITY_SPECCUBE_BOX_PROJECTION UNITY_SPECCUBE_BLENDING UNITY_ENABLE_DETAIL_NORMALMAP UNITY_LIGHT_PROBE_PROXY_VOLUME UNITY_LIGHTMAP_RGBM_ENCODING UNITY_PASS_FORWARDBASE
5. Disabled keywords: _RENDERING_CUTOUT _RENDERING_FADE _RENDERING_TRANSPARENT _METALLIC_MAP _SMOOTHNESS_ALBEDO _SMOOTHNESS_METALLIC _NORMAL_MAP _PARALLAX_MAP _OCCLUSION_MAP _EMISSION_MAP _DETAIL_MASK _DETAIL_ALBEDO_MAP _DETAIL_NORMAL_MAP FOG_LINEAR FOG_EXP FOG_EXP2 INSTANCING_ON DYNAMICLIGHTMAP_ON LIGHTMAP_ON LIGHTMAP_SHADOW_MIXING DIRLIGHTMAP_COMBINED VERTEXLIGHT_ON UNITY_NO_DXT5nm UNITY_ENABLE_NATIVE_SHADOW_LOOKUPS UNITY_METAL_SHADOWS_USE_POINT_FILTERING UNITY_NO_SCREENSPACE_SHADOWS UNITY_PBS_USE_BRDF2 UNITY_PBS_USE_BRDF3 UNITY_NO_FULL_STANDARD_SHADER UNITY_HARDWARE_TIER1 UNITY_HARDWARE_TIER2 UNITY_HARDWARE_TIER3 UNITY_COLORSPACE_GAMMA UNITY_HALF_PRECISION_FRAGMENT_SHADER_REGISTERS UNITY_LIGHTMAP_DLDR_ENCODING UNITY_LIGHTMAP_FULL_HDR UNITY_VIRTUAL_TEXTURING

The line in question is the UNITY_LIGHT_ATTENUATION inside the function CreateLight():

Code (CSharp):

1. UnityLight CreateLight (Interpolators i) {
2.     UnityLight light;
3.         ...
4.    
5.         UNITY_LIGHT_ATTENUATION(attenuation, i, i.worldPos.xyz);  
6.         ...
7.     #endif
8.     return light;
9. }

The struct contains the needed variable:

​

Any idea or tip?

Note: I'm using Unity 2020.1.4f1

Thanks!

 

@SubOathshot I cannot really help you with your specific project, but the error indicates that it's compiling a vertex program with LOD_FADE_CROSSFADE defined, in which case pos is indeed missing from Interpolators, because of VPOS shenanigans in the old default pipeline approach. Note that in the tutorial Interpolators is strictly for use in fragment programs, while InterpolatorsVertex is strictly for use in vertex programs. The latter always contains pos.

 

Hashing
Small xxHash

 

@Jasper-Flick I had been following your Hexagonal map tutorial. Awesome series. Thanks for making it .

But I want to place hexagonal blocks on the generated map (like those city building games)
Example:

Can you give some resources or a starting point on how I should do it?
I have currently done till here : https://catlikecoding.com/unity/tutorials/hex-map/part-1/
Since I will have a plane land without any terrain
Thanks for the help!

 

@eatitall2002 The game that you're showing is essentially a puzzle game that's about matching tiles on a board. Its fundament is a set of tiles with edge-connection rules. That's something very different that what Hex Map is aimed at, being about free-form big maps, though you could use it as a jumping-off point for whatever you like.

 

@Jasper-Flick Thanks I managed to get it done. Your hex Map series actually served as a great starting point for me.

 

Hashing Space
Hashing in an Arbitrary Grid

 

Value Noise
Lattice Noise

 

Link is broken (same above)
should be
https://catlikecoding.com/unity/tutorials/pseudorandom-noise/value-noise/

 

Thanks @dimmduh1, fixed!

 

Perlin Noise
Gradient Noise

 

Noise Variants
Fractals and Tiling

 

Voronoi Noise
Worley and Chebyshev