Brush to Texture

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A little painting app: drag to paint! Each brush stroke is stamped into a RenderTexture that accumulates everything drawn so far. Press C or click [ clear ] to erase.

// A render texture that only updates when we stamp() into it
var renderTexture = new RenderTexture(width, height);
renderTexture.autoRender = false;
renderTexture.clearOnRender = false;

// A quad displaying it
var canvas = new Quad();
canvas.texture = renderTexture;
add(canvas);

// Stamp a (not displayed) brush visual into the texture
renderTexture.stamp(brush, () -> {
    // Stamped! The texture now contains the brush content
});

// Erase everything
renderTexture.clear(Color.WHITE, 0, () -> {});

Next example ➔ Gaussian Blur