Added clamped icon

src/main/java/com/falsepattern/lib/internal/render/ClampedIcon.java

@@ -0,0 +1,59 @@
+package com.falsepattern.lib.internal.render;
+
+import com.falsepattern.lib.util.MathUtil;
+import lombok.AllArgsConstructor;
+import net.minecraft.util.IIcon;
+
+@AllArgsConstructor
+public final class ClampedIcon implements IIcon {
+    private final IIcon delegate;
+
+    @Override
+    public int getIconWidth() {
+        return delegate.getIconWidth();
+    }
+
+    @Override
+    public int getIconHeight() {
+        return delegate.getIconHeight();
+    }
+
+    @Override
+    public float getMinU() {
+        return delegate.getMinU();
+    }
+
+    @Override
+    public float getMaxU() {
+        return delegate.getMaxU();
+    }
+
+    @Override
+    public float getMinV() {
+        return delegate.getMinV();
+    }
+
+    @Override
+    public float getMaxV() {
+        return delegate.getMaxV();
+    }
+
+    @Override
+    public float getInterpolatedU(double textureU) {
+        return delegate.getInterpolatedU(clampTextureCoordinate(textureU));
+    }
+
+    @Override
+    public float getInterpolatedV(double textureV) {
+        return delegate.getInterpolatedV(clampTextureCoordinate(textureV));
+    }
+
+    @Override
+    public String getIconName() {
+        return delegate.getIconName();
+    }
+
+    private double clampTextureCoordinate(double textureCoordinate) {
+        return MathUtil.clamp(textureCoordinate, 0D, 16D);
+    }
+}

src/main/java/com/falsepattern/lib/util/RenderUtil.java

@@ -21,18 +21,22 @@
 package com.falsepattern.lib.util;
 
 import com.falsepattern.lib.StableAPI;
+import com.falsepattern.lib.internal.render.ClampedIcon;
 import com.falsepattern.lib.internal.render.FullTextureIcon;
 import lombok.SneakyThrows;
 import lombok.experimental.UtilityClass;
 import lombok.val;
 
 import net.minecraft.client.Minecraft;
+import net.minecraft.client.renderer.RenderBlocks;
 import net.minecraft.util.IIcon;
 import net.minecraft.util.Timer;
 import cpw.mods.fml.relauncher.ReflectionHelper;
 import cpw.mods.fml.relauncher.SideOnly;
 import org.lwjgl.opengl.GL11;
 
+import java.util.Collections;
+
 import static cpw.mods.fml.relauncher.Side.CLIENT;
 import static net.minecraft.client.Minecraft.getMinecraft;
 
@@ -76,6 +80,20 @@ public final class RenderUtil {
         return new FullTextureIcon(iconName, width, height);
     }
 
+    /**
+     * Wraps the given icon as a clamped icon.
+     * <p>
+     * A clamped icon will clamp the coordinates given to {@link IIcon#getInterpolatedU(double)} and {@link IIcon#getInterpolatedV(double)} to the range of 0 to 16.
+     * <p>
+     * This is helpful when using {@link RenderBlocks} but having different bounds.
+     *
+     * @param icon The icon to clamp
+     */
+    @StableAPI.Expose(since = "0.10.0")
+    public static IIcon wrapAsClampedIcon(IIcon icon) {
+        return new ClampedIcon(icon);
+    }
+
     /**
      * Provides the partial tick between the last and next client tick, in the range of 0 to 1.
      * <p>