add the ability to render text labels and stars

Program.cs

@@ -167,19 +167,6 @@ public class Photo {
 
   public Texture Texture() {
     if (texture == placeholder && image != null) {
-      IPath yourPolygon = new Star(x: 2000.0f, y: 1000.0f, prongs: 5, innerRadii: 20.0f, outerRadii: 50.0f, angle: Util.PI);
-      image.Mutate(x => x.Fill(Color.White, yourPolygon));
-      Font font = SystemFonts.CreateFont("Impact", 120);
-      TextOptions options = new(font) {
-        WrappingLength = image.Width,
-        HorizontalAlignment = HorizontalAlignment.Center,
-        Origin = new PointF(image.Width / 2, image.Height / 2 - 60),
-      };
-      string text = "oh no i made a memegen";
-      IBrush brush = Brushes.Solid(Color.White);
-      IPen pen = Pens.Solid(Color.Black, 2.5f);
-      image.Mutate(x => x.DrawText(options, text, brush, pen));
-      Console.WriteLine("making texture for " + file);
       texture = new Texture(image);
       image.Dispose();
       image = null;
@@ -198,7 +185,10 @@ public class Texture : IDisposable {
     image.CopyPixelDataTo(pixelBytes);
 
     Handle = GL.GenTexture();
-    Console.WriteLine("GL.GenTexture #" + Handle);
+    if (Handle > maxHandle) {
+      Console.WriteLine("GL.GenTexture #" + Handle);
+      maxHandle = Handle;
+    }
     GL.ActiveTexture(TextureUnit.Texture0);
     GL.BindTexture(TextureTarget.Texture2D, Handle);
     GL.TexImage2D(TextureTarget.Texture2D, 0, PixelInternalFormat.Rgba, Size.X, Size.Y, 0, PixelFormat.Rgba, PixelType.UnsignedByte, pixelBytes);
@@ -213,6 +203,7 @@ public class Texture : IDisposable {
     //GL.GenerateMipmap(GenerateMipmapTarget.Texture2D);
   }
 
+  private static int maxHandle = -1;
   private bool disposedValue = false;
 
   protected virtual void Dispose(bool disposing) {
@@ -265,6 +256,33 @@ public static class Util {
   public static Box2i makeBox(int left, int top, int width, int height) {
     return new Box2i(left, top, left + width, top + height);
   }
+
+  public static Image<Rgba32> makeImage(float width, float height) {
+    return new((int) Math.Ceiling(width), (int) Math.Ceiling(height), new Rgba32(0x00, 0x00, 0x00, 0x00));
+  }
+
+  public static Texture renderText(string text) {
+    Font font = SystemFonts.CreateFont("Consolas", 36, FontStyle.Bold);
+    TextOptions options = new(font);
+    FontRectangle size = TextMeasurer.Measure(text, new TextOptions(font));
+    Image<Rgba32> image = makeImage(size.Width, size.Height);
+    IBrush brush = Brushes.Solid(Color.White);
+    IPen pen = Pens.Solid(Color.Black, 1f);
+    image.Mutate(x => x.DrawText(options, text, brush, pen));
+    Texture texture = new Texture(image);
+    image.Dispose();
+    return texture;
+  }
+
+  public static Texture renderStar(float radius) {
+    IPath path = new Star(x: radius, y: radius, prongs: 5, innerRadii: radius * 0.4f, outerRadii: radius, angle: Util.PI);
+    Image<Rgba32> image = makeImage(path.Bounds.Width, path.Bounds.Height);
+    image.Mutate(x => x.Fill(Color.White, path));
+    Texture texture = new Texture(image);
+    image.Dispose();
+    return texture;
+  }
+
 }
 
 public class Game : GameWindow {
@@ -372,6 +390,9 @@ public class Game : GameWindow {
 
     GL.ClearColor(0f, 0f, 0f, 1f);
 
+    GL.Enable(EnableCap.Blend);
+    GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
+
     VertexArrayObject = GL.GenVertexArray();
     GL.BindVertexArray(VertexArrayObject);
 
@@ -450,6 +471,10 @@ public class Game : GameWindow {
         DrawBox(box, 3, Color4.White);
       }
     }
+    Texture label = Util.renderText("hello world what is going on");
+    // Texture label = Util.renderStar(10);
+    DrawTexture(label, Util.makeBox(10, 10, label.Size.X, label.Size.Y));
+    label.Dispose();
 
     SwapBuffers();
   }