private void DrawBlockBottom(TriangleBuffer buffer, WorldTextureAtlas.TextureEntry textureEntry, float x, float y, float z, float highlight)
        {
            buffer.Triangle(0, 1, 3);
            buffer.Triangle(3, 1, 2);

            buffer.VertexFloat(x - 0.5f, y - 0.5f, z + 0.5f); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y0); buffer.VertexColorBytes(0.33f, 0.33f, 0.33f, highlight); buffer.EndVertex();
            buffer.VertexFloat(x - 0.5f, y - 0.5f, z - 0.5f); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y1); buffer.VertexColorBytes(0.33f, 0.33f, 0.33f, highlight); buffer.EndVertex();
            buffer.VertexFloat(x + 0.5f, y - 0.5f, z - 0.5f); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y1); buffer.VertexColorBytes(0.33f, 0.33f, 0.33f, highlight); buffer.EndVertex();
            buffer.VertexFloat(x + 0.5f, y - 0.5f, z + 0.5f); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y0); buffer.VertexColorBytes(0.33f, 0.33f, 0.33f, highlight); buffer.EndVertex();
        }
        private void DrawEntity(TriangleBuffer buffer, float x, float y, float z, float xRadius, float height)
        {
            var textureEntry = _textureAtlas.GetTextureEntry(0);

            buffer.Triangle(0, 1, 3);
            buffer.Triangle(3, 1, 2);
            buffer.VertexFloat(x - xRadius, y, z + xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y0); buffer.VertexByte(217, 217, 217, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y, z + xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y0); buffer.VertexByte(217, 217, 217, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y + height, z + xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y1); buffer.VertexByte(217, 217, 217, 0); buffer.EndVertex();
            buffer.VertexFloat(x - xRadius, y + height, z + xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y1); buffer.VertexByte(217, 217, 217, 0); buffer.EndVertex();

            buffer.Triangle(0, 1, 3);
            buffer.Triangle(3, 1, 2);
            buffer.VertexFloat(x + xRadius, y, z + xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y0); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y, z - xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y0); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y + height, z - xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y1); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y + height, z + xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y1); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();

            buffer.Triangle(0, 1, 3);
            buffer.Triangle(3, 1, 2);
            buffer.VertexFloat(x + xRadius, y, z - xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y0); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x - xRadius, y, z - xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y0); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x - xRadius, y + height, z - xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y1); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y + height, z - xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y1); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();

            buffer.Triangle(0, 1, 3);
            buffer.Triangle(3, 1, 2);
            buffer.VertexFloat(x - xRadius, y, z - xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y0); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x - xRadius, y, z + xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y0); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x - xRadius, y + height, z + xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y1); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x - xRadius, y + height, z - xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y1); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();

            buffer.Triangle(0, 1, 3);
            buffer.Triangle(3, 1, 2);
            buffer.VertexFloat(x - xRadius, y, z + xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y0); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x - xRadius, y, z - xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y0); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y, z - xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y1); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y, z + xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y1); buffer.VertexByte(178, 204, 230, 0); buffer.EndVertex();

            buffer.Triangle(0, 1, 3);
            buffer.Triangle(3, 1, 2);
            buffer.VertexFloat(x - xRadius, y + height, z + xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y0); buffer.VertexByte(255, 255, 255, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y + height, z + xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y0); buffer.VertexByte(255, 255, 255, 0); buffer.EndVertex();
            buffer.VertexFloat(x + xRadius, y + height, z - xRadius); buffer.VertexUInt16(textureEntry.X1, textureEntry.Y1); buffer.VertexByte(255, 255, 255, 0); buffer.EndVertex();
            buffer.VertexFloat(x - xRadius, y + height, z - xRadius); buffer.VertexUInt16(textureEntry.X0, textureEntry.Y1); buffer.VertexByte(255, 255, 255, 0); buffer.EndVertex();
        }