@SubscribeEvent
    public static void onTextureStitch(final TextureStitchEvent.Pre event)
    {
        final TextureMap map = event.getMap();

        if(map == Minecraft.getMinecraft().getTextureMapBlocks())
        {
            map.setTextureEntry(new AlphaSprite(new ResourceLocation(Reference.MODID, "items/glyphs/glyph_1")));
        }
    }

    static class AlphaSprite extends TextureAtlasSprite
    {
        private AnimationMetadataSection animationMetadata;

        AlphaSprite(final ResourceLocation name)
        {
            super(name.toString());
        }

        @Override
        public void updateAnimation()
        {
            ++this.tickCounter;

            if(this.tickCounter >= this.animationMetadata.getFrameTimeSingle(this.frameCounter))
            {
                int i = this.animationMetadata.getFrameIndex(this.frameCounter);
                int j = this.animationMetadata.getFrameCount() == 0 ? this.framesTextureData.size() : this.animationMetadata.getFrameCount();
                this.frameCounter = (this.frameCounter + 1) % j;
                this.tickCounter = 0;
                int k = this.animationMetadata.getFrameIndex(this.frameCounter);

                if(i != k && k >= 0 && k < this.framesTextureData.size())
                {
                    TextureUtil.uploadTextureMipmap(this.framesTextureData.get(k), this.width, this.height, this.originX, this.originY, false, false);
                }
            }
            else if(this.animationMetadata.isInterpolate())
            {
                this.updateAnimationInterpolated();
            }
        }

        private void updateAnimationInterpolated()
        {
            double d0 = 1.0D - (double)this.tickCounter / (double)this.animationMetadata.getFrameTimeSingle(this.frameCounter);
            int i = this.animationMetadata.getFrameIndex(this.frameCounter);
            int j = this.animationMetadata.getFrameCount() == 0 ? this.framesTextureData.size() : this.animationMetadata.getFrameCount();
            int k = this.animationMetadata.getFrameIndex((this.frameCounter + 1) % j);

            if(i != k && k >= 0 && k < this.framesTextureData.size())
            {
                int[][] aint = this.framesTextureData.get(i);
                int[][] aint1 = this.framesTextureData.get(k);

                if(this.interpolatedFrameData == null || this.interpolatedFrameData.length != aint.length)
                {
                    this.interpolatedFrameData = new int[aint.length][];
                }

                for(int l = 0; l < aint.length; ++l)
                {
                    if(this.interpolatedFrameData[l] == null)
                    {
                        this.interpolatedFrameData[l] = new int[aint[l].length];
                    }

                    if(l < aint1.length && aint1[l].length == aint[l].length)
                    {
                        for(int i1 = 0; i1 < aint[l].length; ++i1)
                        {
                            int j1 = aint[l][i1];
                            int k1 = aint1[l][i1];
                            int a = this.interpolateColor(d0, j1 >> 24 & 255, k1 >> 24 & 255);
                            int r = this.interpolateColor(d0, j1 >> 16 & 255, k1 >> 16 & 255);
                            int g = this.interpolateColor(d0, j1 >> 8 & 255, k1 >> 8 & 255);
                            int b = this.interpolateColor(d0, j1 & 255, k1 & 255);
                            this.interpolatedFrameData[l][i1] = a << 24 | r << 16 | g << 8 | b;
                        }
                    }
                }

                TextureUtil.uploadTextureMipmap(this.interpolatedFrameData, this.width, this.height, this.originX, this.originY, false, false);
            }
        }

        private int interpolateColor(double d0, int i1, int i2)
        {
            return (int)(d0 * (double)i1 + (1.0D - d0) * (double)i2);
        }
    }