Deferred Materials - jedlimlx/supplemental-patches GitHub Wiki

Deferred materials are material properties which run on the deferred pass of the shader. This means that it runs after the basic material shaders which you may have defined earlier. They are typically used to tint the color of reflections on blocks.

To create a shader for deferred materials, you will need to create

• a .glsl file to store shader code and
• a .json file to denote the name of the material

These files should be placed under the deferred folder.

GLSL Format

The shader code will be injected into /shaders/lib/materials/materialHandling/deferredMaterials.glsl.

Inputs

You have access to the following within the shader code. The data type is indicated in front. This is a non-exhaustive list and only touches on the most commonly used variables.

float smoothnessD - The reflectivity of the block for screenspace reflections, which was set previously. vec3 color.rgb - The color of the block within the block texture, for the currently evaluated part of the block. Each RGB value ranges between 0 and 1.

Outputs

The following can be modified within the code. The data type is indicated in front. This is a non-exhaustive list and only touches on the most commonly used variables.

float intenseFresnel - Controls the strength of the frensel effect. Typically set to 1.0. vec3 reflectColor - Tints reflections on blocks with this deferred material.

JSON Format

The following are the parameters specified in the JSON. Bolded and italicized parameters are required.

name - The name of the type of block handled by the shader. glsl - The relative path to the .glsl file. Currently only searches for files within the same folder as the .json file. or within a sub-folder of that folder.

Examples

Blast Proof Plates

intenseFresnel = 1.0;  
if (color.g > color.r) {  
    reflectColor = vec3(0.75, 1.0, 0.5);  
} else {  
    reflectColor = vec3(1.0, 0.85, 0.3);  
}

{  
  "name": "blast_proof_plates",  
  "glsl": "blast_proof_plates.glsl"  
}

After defining the deferred material above, it can be accessed via the following shader.

materialMask = OSIEBCA * deferredMaterial("supplemental_patches:savage_and_ravage/blast_proof_plates"); // Lead Fresnel  
  
#ifdef GBUFFERS_TERRAIN  
    smoothnessG = 0.8 * pow2(max(color.r, color.g));  
#else  
    smoothnessG = 0.8 * max(color.r, color.g);  
#endif  
  
highlightMult = 2.5 * min1(smoothnessG);  
smoothnessD = smoothnessG;  
  
color.rgb *= 0.2 + 0.7 * GetLuminance(color.rgb);  
  
#ifdef COATED_TEXTURES  
    noiseFactor = 0.33;  
#endif