let (mut rl, thread) = raylib::init().width(800).height(450).build();

let im_red = Image::gen_image_color(800, 450, Color::new(255, 0, 0, 255));

let tex_red = rl.load_texture_from_image(&thread, &im_red).unwrap();

let im_blue = Image::gen_image_color(800, 450, Color::new(0, 0, 255, 255));

let tex_blue = rl.load_texture_from_image(&thread, &im_blue).unwrap();

let mut shader = rl.load_shader(&thread, None, Some("static/shader/color_mix.fs"));

// Get an additional sampler2D location to be enabled on drawing

let tex_blue_loc = shader.get_shader_location("texture1");

// Get shader uniform for divider

let divider_loc = shader.get_shader_location("divider");

let mut divider_value = 0.5;

rl.set_target_fps(60);

while !rl.window_should_close() {

if rl.is_key_down(KeyboardKey::KEY_RIGHT) {

divider_value += 0.01;

}

if rl.is_key_down(KeyboardKey::KEY_LEFT) {

divider_value -= 0.01;

}

if divider_value < 0.0 {

divider_value = 0.0;

} else if divider_value > 1.0 {

divider_value = 1.0;

};

rl.draw(&thread, |mut d| {

shader.set_shader_value(divider_loc, divider_value);

shader.set_shader_value_texture(tex_blue_loc, &tex_blue);

{

let mut d = d.begin_shader_mode(&mut shader);

d.clear_background(Color::WHITE);

d.draw_texture(&tex_red, 0, 0, Color::WHITE);

}

//d.draw_shader_mode(&mut shader, |mut d| {

// // note(jest): setting shader values must be done before starting shader modes or else borrow issues

// shader.set_shader_value(divider_loc, divider_value);

// shader.set_shader_value_texture(tex_blue_loc, &tex_blue);

// d.clear_background(Color::WHITE);

// d.draw_texture(&tex_red, 0, 0, Color::WHITE);

//});

d.draw_text(

"Use KEY_LEFT/KEY_RIGHT to move texture mixing in shader!",

80,

d.get_screen_height() - 40,

20,

Color::RAYWHITE,

);

})

}