How to make groups

[HSDSZ]

First, thank you so much for making this Malt engine. I find myself getting more used to code based texture now. HAHA

I have one question.
After I cretae some varibles, Can I group them?
For example, in the bottom pic
Can I group the "Base Color" and "Texture" into a New group like the existing "Lights Groups"?

[pragma37]

Hi! I'm glad that Malt is helping you to get into shader coding. :)

For grouping variables, you can use structs. For example:

#include "Pipelines/NPR_Pipeline.glsl"

struct TextureSettings
{
    sampler2D texture;
    int uv_index;
};

uniform TextureSettings Color_Texture;

void COMMON_PIXEL_SHADER(Surface S, inout PixelOutput PO)
{
    PO.color = texture(Color_Texture.texture, UV[Color_Texture.uv_index]);
}

Alternatively, you can also use _0_ as a separator in the variable name.

#include "Pipelines/NPR_Pipeline.glsl"

uniform sampler2D Color_Texture_0_texture;
uniform int Color_Texture_0_uv_index;

void COMMON_PIXEL_SHADER(Surface S, inout PixelOutput PO)
{
    PO.color = texture(Color_Texture_0_texture, UV[Color_Texture_0_uv_index]);
}

Both of these samples will look the same in the UI.

[HSDSZ]

Many thanks. It works

[HSDSZ]

How Can I initialize Sampler2D in a struct. Or can I skip the Sampler2D initialization?

The following code works if I remove sampler2D in the struct. But with Sampler2D. I don;t know how to make it work

struct ImageSettings
{
bool Enbale_Image;
int Image_UV_Index;
vec2 Scale;
vec2 Offset;
sampler2D Image;
};
uniform ImageSettings imagesettings = ImageSettings(false, 0, vec2(1.0,1.0), vec2(0.0, 0.0));

[pragma37]

Looks like I forgot to answer your second question, sorry!
Sadly, there's no way to initialize sampler2D variables from GLSL.

[HSDSZ]

HAHA, thank you anyway

[HSDSZ]

May I ask, How to make group with node?

[pragma37]

There's no node groups support at the moment.
You could rewrite your nodes as a function and put it into your Shader Library.
https://youtu.be/tE99jgCCcNE?t=706