gravenwitch openglutils null color fix

package Gravenwitch.CinematicCombat.util;

import java.awt.Color;
import org.lwjgl.opengl.GL11;

public final class OpenGLUtils {
    public static void glColor(Color color) {
        // Null‐guard: fallback to white if color is null
        if (color == null) {
            GL11.glColor4ub((byte)255, (byte)255, (byte)255, (byte)255);
            return;
        }
        GL11.glColor4ub(
            (byte) color.getRed(),
            (byte) color.getGreen(),
            (byte) color.getBlue(),
            (byte) color.getAlpha()
        );
    }

    public static void glColor(Color color, float alphaMult) {
        // Null‐guard: fallback to white if color is null
        if (color == null) {
            GL11.glColor4ub((byte)255, (byte)255, (byte)255, (byte)255);
            return;
        }
        GL11.glColor4ub(
            (byte) color.getRed(),
            (byte) color.getGreen(),
            (byte) color.getBlue(),
            (byte) ((float) color.getAlpha() * alphaMult)
        );
    }

    public static void setupRendering() {
        GL11.glPushAttrib(1048575);
        GL11.glDisable(3553);
        GL11.glEnable(2848);
        GL11.glHint(3154, 4354);
        GL11.glEnable(3042);
        GL11.glBlendFunc(770, 771);
        GL11.glTranslatef(0.01f, 0.01f, 0.0f);
    }

    public static void finishRendering() {
        GL11.glDisable(3042);
        GL11.glMatrixMode(5888);
        GL11.glPopMatrix();
        GL11.glPopAttrib();
    }
}