CodeChickenCore/codechicken/lib/render/ColourMultiplier.java

package codechicken.lib.render;

import codechicken.lib.colour.ColourRGBA;

public class ColourMultiplier implements CCRenderState.IVertexOperation
{
    private static ColourMultiplier instance = new ColourMultiplier(-1);

    public static ColourMultiplier instance(int colour) {
        instance.colour = colour;
        return instance;
    }

    public static final int operationIndex = CCRenderState.registerOperation();
    public int colour;

    public ColourMultiplier(int colour) {
        this.colour = colour;
    }

    @Override
    public boolean load() {
        if(colour == -1)
            return false;

        CCRenderState.pipeline.addDependency(CCRenderState.colourAttrib);
        return true;
    }

    @Override
    public void operate() {
        CCRenderState.setColour(ColourRGBA.multiply(CCRenderState.colour, colour));
    }

    @Override
    public int operationID() {
        return operationIndex;
    }
}