Topics

1

General / SFML wrapper - access violation on passing null shader to drawSprite()

« on: May 07, 2020, 12:24:23 pm »

Solved. It was a mismatch between the backing enum types for sf::BlendMode::Factor vs my beef representation, the correct type was uint32.

Hey! I'm currently doing SFML bindings in the beef programming language and I've run into a bit of a problem when trying to call sfRenderWindow_drawSprite() and passing in RenderStates with a null shader handle.

ShaderHandle & TextureHandle are just pointer-sized opaque handles

[CRepr, Ordered]
public struct RenderStates
{
    public BlendMode Mode;
    public Matrix3x3 Matrix; //sfTransform
    public TextureHandle TextureH;
    public ShaderHandle ShaderH;

   public this(BlendMode mode, Texture texture, Shade shader, Matrix3x3? matrix)
   {
        Mode = mode;
        TextureH = texture.[Friend]_handle;
        ShaderH = shader.[Friend]_handle;
        Matrix = matrix ?? Matrix3x3.Identity;  
   }
}

public static void Main()
{
        using(let window = new RenderWindow(VideoMode(800, 600), "Title")) {
                window.ClosedEvent.Add(scope (w) => {
                        window.Close();
                });

                var texture = scope Texture("resources/beef.png");
                var sprite = scope Sprite(texture);
                var renderStates = RenderStates(BlendMode.Alpha, texture, null, null);

                while (window.IsOpen())
                {
                        window.ClearColor(Color.CornflowerBlue);
                        window.DispatchEvents();
                        //window.DrawSprite(sprite, renderStates); ACCESS VIOLATION
                        window.Display();
                }
        }
}
 

2

DotNet / Texture CoordinateType enum missing from SFML.Net?

« on: March 15, 2018, 01:59:53 pm »

Like the title, this: https://www.sfml-dev.org/documentation/2.4.2/classsf_1_1Texture.php#aa6fd3bbe3c334b3c4428edfb2765a82e

seems to be missing from the .NET-binding.

What's the default coordinate type? Working on a sprite batcher and the textures aren't being displayed so I assume I got the coordinates wrong (since the quads display correctly with color).

Relevant code:

var item = new BatchItem();
item.Update(x, y, width, height, color, new Vector2i(source.Left, source.Top));
 

public void Update(float x, float y, float width, float height, Color color, Vector2i textureCoords)
{
                       
        TopLeft.Position = new Vector2f(x, y);
        TopLeft.Color = color;
        TopLeft.TexCoords = new Vector2f(textureCoords.X, textureCoords.Y);

        TopRight.Position = new Vector2f(x + width, y);
        TopRight.Color = color;
        TopRight.TexCoords = new Vector2f(textureCoords.X + width, textureCoords.Y);

        BottomRight.Position = new Vector2f(x + width, y + height);
        BottomRight.Color = color;
        BottomRight.TexCoords = new Vector2f(textureCoords.X + width, textureCoords.Y + height);

        BottomLeft.Position = new Vector2f(x, y + height);
        BottomLeft.Color = color;
        BottomLeft.TexCoords = new Vector2f(textureCoords.X, textureCoords.Y + height);
}
 

3

DotNet / sfmlnet-graphics-2.dll - System.AccessViolationException

« on: November 25, 2014, 06:16:16 pm »

I compiled the latest source from github and this happens when I use the Sprite class.
Specifically when I try to draw the sprite. If I comment that part out, it'll run without any problems.

namespace ForScience
{
    class Program
    {
        static void Main(string[] args)
        {

            using(var rWindow = new RenderWindow(new VideoMode(800, 600), "For science!", Styles.Close))
            {
                Sprite spr = new Sprite(new Texture("spr_cannon_barrel.png"));

                rWindow.Closed += (sender, e) =>
                {
                    rWindow.Close();
                };

                while(rWindow.IsOpen)
                {
                    rWindow.DispatchEvents();
                    rWindow.Clear(new Color(248, 240, 255));
                    rWindow.Draw(spr);
                    rWindow.Display();
                }

            }  
       
        }
    }
}
 

The image is copied to build directory along with the extlibs and all libs are properly referenced.

4

DotNet / Set sprite origin.

« on: November 20, 2014, 02:41:13 pm »

Hello.

Setting the sprite origin doesn't seem to work.

I can't really see what I'm doing wrong here, everything else works just fine. I can't set the Origin even if I do it directly to the sprite itself, rather than using properties.

        public void LoadContent()
        {
            player.Origin = new Vector2f(player.Scale.Y, player.Scale.Y) / 2;
        }
 

        public Vector2f Origin { get { return this.sprite.Origin;  } set { this.sprite.Origin = value;  } }
 

5

DotNet / Check if mousebutton was clicked (pressed, then released)

« on: November 17, 2014, 12:33:49 pm »

Hello.

I'm having a bit of a problem here with a Method. See, I need this method to return true only when the mousebutton was pressed and then released.

Code: [Select]


        private static bool MouseClicked(Mouse.Button Button)
        {
            if (Mouse.IsButtonPressed(Button))
            {
                if (!Mouse.IsButtonPressed(Button))
                    return true;
                else
                    return false;
            }
            else
                return false;
        }


I know why the above code fails to do what I want, it's quite simple, it's running through a loop and so, the mouse-clicking has to be pretty damn precise(read lucky) in order for the method to return true..

Now, I'm at a total loss here tbh, I'm not quite sure how this could be solved. Any ideas? 

6

Graphics / Sprites doesn't render properly

« on: April 27, 2014, 05:28:25 am »

Hello, I'm having a bit of a problem here and I can't quite see why.

I have a folder that contains 16 images and I want to render them to the screen and spread them out.




This is how I load them. I want all items to show up, but instead only 1 item shows up in 16 different positions...

sf::Sprite mazeSprite[16];

initialize()
{
      sf::Texture texture;
      std::string filePath = "C:/users/enok/desktop/sprites/cube";

      float x = 10, y = 10;

      for (int i = 0; i <= 15; i++)
      {
                std::string id = std::to_string(static_cast<long long>(i)) + ".png";

                texture.loadFromFile(filePath + id);

                mazeSprite[i].setTexture(texture);
                mazeSprite[i].setTextureRect(sf::IntRect(10,10,32,32));
                mazeSprite[i].setPosition(x,y);
                x+= 20;
                std::cout << filePath + id << std::endl;
      }

}
 

this is the same sprite lined up 16 times.
http://puu.sh/8p4jz.png


This is the render() function

rWindow.clear();

                for(int i = 0; i <= 15; i++)
                {
                        rWindow.draw(mazeSprite[i]);
                }
                rWindow.display();