Light Shader v4.1

This is a Coppercube shader extension that will enhance the lighting and material quality of your CopperCube objects. Below are the features this shader action provides you.

Watch usage videos on YouTube:-

For v4.1:-

NOTE:- Since version 4.0, the price of the shader has been increased,  If you guys already own version 3.4 or earlier then you don't have to pay the full amount for the shader again, you guys can contact me via email or through my discord server,   you can pay the difference amount. Contact me here if you already own the  shader:-
e-mail:- neophyte.cf@gmail.com
Discord:- https://discord.gg/RKcq89S7uA

• Support for Normal Maps
• Support for Specular Maps
• Support for Ambient Occlusion Maps
• Support for Emmisive Maps
  
• Controllable Normal Map strength
• Controllable Specular gloss
• Controllable Specular strength
• Auto-grab light nodes from the scene
• Ambient color 
• Diffuse color
• Specular color
• Individual Light intensity (attenuation)
• Individual Light color
• Toggle to turn off specularity
• Work with both animated and static 3D object
• Uses the default point light data for light color and strength
• Now supports Fog
• Now supports Flashlight with controllable properties.
• Auto-apply to all the 3D objects including billboards and particle systems in the scene.
• Auto-grab the default material type. 
• Vertex Color support
• Support 10 lights at a time
• Fog works with Normal maps
• Normal maps work with transparency
• And many other limitations of CopperCube's inbuilt lighting have been lifted up.

VARIABLES:-

There are many variables available in the shader that you can use to change the parameters during runtime. Like Flashlight Intensity, Defect intensity, etc. Some of the variables also provide material-specific property change by allowing you to specify a material index. Below are the available variables.

nodename.matindex.emissivestrength
nodename.matindex.normalstrength
nodename.matindex.normaldepth
customlight.flashlightintensity
customlight.defectsintensity

"nodename " is the name of the object that you want to change the property for and "matindex" is the material index of that object. For example, if you have an object in your scene with the name "cubeMesh" which has 3 materials and you want to change the emissive strength for the first material you can use the variable below and set a value to it. 

cubeMesh.0.emissivestrength

Others are just global variables and can be used without providing a material index or node name. More variables to control various properties can be added in future versions.

Javascript Command:- 
Since version 4.1, the shader uses a new javascript command which is necessary to use after you make changes to material-specific properties or use any of the variables provided by the shader during runtime. For example, if you change the AmbientColor, DiffuseColor, NormalStrength, NormalDepth, etc, then you need to call this command so that the shader can update the light data.  Here is the command and all you need is copy and paste this into an execute javascript action whenever you make any changes.

ccbUpdate_JIC_CustomLightData()

New in v3.1:-

• Lights can be toggled on/off based on the Visibility parameter of CC's default Light attributes, now it can be used to create blinking lights easily.

New in v3.2:-

• Added Normal Depth Parameter, It can be used to give your Normal Maps a better depth perception. Use a value near "0" to give more depth details, higher values will decrease the depth details. For example "0.01" will give more depth details than "0.1".
• Normal depth will affect the Specularity, You might need to adjust the specular strength and normal strength to get better results.

New in v3.3:-

• Added FOG support to the shader. It will now automatically render the CopperCube's default fog on the object with the shader applied if Fog is turned ON in the attributes of the "Root scene node". You can additionally exclude the object to be affected by fog by simply turning ON and OFF a new parameter "Fog Enabled" added to the shader properties.

New in v3.4:-

• Fixed an issue with the normal maps, previously normal maps weren't reacting to the light source, now react to the light source and make the bumps look more appealing
• You probably may need to use negative normal strength and lower specular values, as the normal maps reacting to light can also cause issues, with animated meshes.
  It's better to use the previous version if the latest version doesn't work for you.

New in v3.4.1:-

• General update over the faulty update of 3.4, Normal mapping reacts to light and works with animated objects as well.

New in v4.0:-

• The whole codebase updated.
• Auto-apply the shader to all the objects in the scene ( static and animated mesh).
• Auto-grab base material for the objects.
• Global and individual material-specific properties that can be edited from irredit/irrlicht tools (Ambient, Diffuse, Specular).
• Flashlight support with many features like (a toggle button, flashlight defects, etc)
• Ability to  exclude static objects to  be affected by  shader ( Occludes light toggle)
• A lot of major and minor bug fixes and many more options, watch the usage tutorial video to get an idea of what new has been added and what's changed.

New in v4.1:-

• Supports up to 10 lights at a time
• Runtime variable-based controlling of property values
• Highly optimized for better  performance
• Option to toggle between Ambient Occlusion or Emissive maps
• Toggle to use inbuilt  CC normals and the shader's own normal mapping technique
• Various minor and major bug fixes like loading overlay, transparency bug, etc.

Limitations:-

• Only point lights can be used.
• The object to which the shader is applied will not be able to receive real-time shadows. However other objects in your scene that don't use this shader will still be able to use shadows.
• This will not work with CC's inbuilt terrain and water nodes.
• Sometimes normal maps might cause artifacts if UV islands are used.
• Since v4.0, framerate can be affected, depending on the complexity of your scene, Materials and objects count will affect performance. ( Now in v4.1, it is highly optimized)
• Since  v4.0, as the shader gets applied to all the objects in the scene, the game will become unresponsive until the shaders get applied to the objects in the scene, it is better to provide a Loading Splash overlay to show before applying the shader.

You will also get sample files for all the images that you see on your right along with this shader, to get an idea of how to set it up for different kinds of models. Hope you will like this shader. Newer versions may have source only and no demos, You can however download the version with the demos and can apply for the latest shader extension on them.

All the models used in the demos are downloaded from https://sketchfab.com/ and https://www.mixamo.com/, I don't own any rights to them. 

In the demo for v4.0, v4.1  Music: Silhouette by Whatfunk.
In demo v4.1 :- "Dodemon" (https://skfb.ly/oFQSN) by Adrien Marcastel.

Watch usage videos on YouTube:-

For v4.1:-

For v4.0:- 

For v3.4 and earlier:-

For any questions or bug reports, you can contact me on my Discord Server here:-

https://discord.gg/RKcq89S7uA

If you like this shader then, you might also be interested in my other shaders for CopperCube too, you can get them for free from my website along with other  CC extensions:- https://neophyte.cf/assets.html

To watch tutorials and demonstration videos, You can also subscribe to my YouTube Channel here:- https://www.youtube.com/channel/UC_yfoGEKkmY63tnyy6hR7ZQ

Note:- This shader will only work on the DirectX platform, which means it will have no use on webGL and Android Target and will work on Windows and macOS DirectX targets only.

For a complete changelog see the source script of the shader extension.