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Jjagg/UpscalePoint.cs

Created November 7, 2017 20:45
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  1. Jjagg created this gist Nov 7, 2017.
    78 changes: 78 additions & 0 deletions UpscalePoint.cs
    View file
    Original file line number Diff line number Diff line change
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    using Microsoft.Xna.Framework;
    using Microsoft.Xna.Framework.Graphics;
    using Microsoft.Xna.Framework.Input;

    namespace WinDesktopPlatformer
    {
    public class Game1 : Game
    {
    GraphicsDeviceManager graphics;
    SpriteBatch spriteBatch;

    static int PPU = 1;
    static int TILE_SIZE = 16;
    static int ROOM_WIDTH = 32;
    static int ROOM_HEIGHT = 18;
    static Rectangle CANVAS = new Rectangle(0, 0, (TILE_SIZE * ROOM_WIDTH) / PPU, (TILE_SIZE * ROOM_HEIGHT) / PPU);

    Texture2D tileSet;

    Rectangle tile1;

    private const int ScreenWidth = 1920;
    private const int ScreenHeight = 1080;
    private RenderTarget2D _renderTarget;

    public Game1()
    {
    graphics = new GraphicsDeviceManager(this);
    graphics.PreferMultiSampling = false;
    graphics.SynchronizeWithVerticalRetrace = true;
    graphics.PreferredBackBufferWidth = ScreenWidth;
    graphics.PreferredBackBufferHeight = ScreenHeight;

    graphics.IsFullScreen = true;

    Content.RootDirectory = "Content";
    }

    protected override void LoadContent()
    {
    spriteBatch = new SpriteBatch(GraphicsDevice);

    tileSet = Content.Load<Texture2D>(@"Images/Tiles2");
    tile1 = new Rectangle(0, 32, TILE_SIZE, TILE_SIZE);

    _renderTarget = new RenderTarget2D(GraphicsDevice, CANVAS.Width, CANVAS.Height);
    }

    protected override void Update(GameTime gameTime)
    {
    if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
    Exit();

    base.Update(gameTime);
    }

    protected override void Draw(GameTime gameTime)
    {
    GraphicsDevice.SetRenderTarget(_renderTarget);
    GraphicsDevice.Clear(Color.CornflowerBlue);

    // render your complete game here at a low resolution to the render target
    // we use point sampling here because we enlarge the texture
    spriteBatch.Begin(samplerState: SamplerState.PointClamp);
    spriteBatch.Draw(tileSet, new Rectangle(16, 16, 64, 64), tile1, Color.White);
    spriteBatch.End();

    GraphicsDevice.SetRenderTarget(null);

    // here we upscale it to the full screen, again with point sampling enabled
    spriteBatch.Begin(samplerState: SamplerState.PointClamp);
    spriteBatch.Draw(_renderTarget, new Rectangle(0, 0, ScreenWidth, ScreenHeight), Color.White);
    spriteBatch.End();

    base.Draw(gameTime);
    }
    }
    }