gg: set_pixels() (#11236)

examples/gg/set_pixels.v

@@ -0,0 +1,39 @@
+module main
+
+import gg
+import gx
+
+struct App {
+mut:
+	gg &gg.Context
+}
+
+fn main() {
+	mut app := &App{
+		gg: 0
+	}
+	app.gg = gg.new_context(
+		bg_color: gx.rgb(174, 198, 255)
+		width: 100
+		height: 100
+		window_title: 'Set Pixels'
+		frame_fn: frame
+		user_data: app
+	)
+	app.gg.run()
+}
+
+fn frame(mut app App) {
+	mut pixels := []f32{}
+
+	for x in 30 .. 60 {
+		for y in 30 .. 60 {
+			pixels << f32(x)
+			pixels << f32(y)
+		}
+	}
+
+	app.gg.begin()
+	app.gg.set_pixels(pixels, gx.red)
+	app.gg.end()
+}