A small test program that demonstrates the new BlendMode usage.

background.png

main.cpp

#include <SFML/Graphics.hpp>

int main(int argc, const char* argv[]) {
    // Create a window for the game
    sf::RenderWindow window(sf::VideoMode(800, 600), "SFML Application", sf::Style::Titlebar | sf::Style::Close);

    // Load the center sprite
    sf::Texture texture;
    texture.loadFromFile("background.png");
    sf::Sprite center_sprite(texture);
    center_sprite.setOrigin(256, 256);
    center_sprite.setPosition(400, 300);

    // Overlaping circle for mode demonstration
    sf::CircleShape circle(150);
    circle.setFillColor(sf::Color(120,120,200,128));
    circle.setOutlineThickness(40);
    circle.setOutlineColor(sf::Color(200,200,20,200));
    circle.setOrigin(150, 150);

    bool running = true;

    while(running)
    {
        // ---------- Handle Events -----------
        sf::Event event;
        while(window.pollEvent(event))
        {
            // Handle events
            if(event.type == sf::Event::Closed) {
                running = false;
            }
            if(event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Escape) {
                running = false;
            }
        }

        // ---------- Draw the scene ----------
        window.clear();

        // Draw the center textured sprite
        window.draw(center_sprite);

        // Draw the four pre-defined blending modes
        circle.setPosition(144, 44);
        window.draw(circle, sf::BlendAlpha);
        circle.setPosition(656, 44);
        window.draw(circle, sf::BlendAdd);
        circle.setPosition(656, 556);
        window.draw(circle, sf::BlendMultiply);
        circle.setPosition(144, 556);
        window.draw(circle, sf::BlendNone);

        // Create and draw a modulation blending mode
        sf::BlendMode blendmode = sf::BlendMultiply;
        blendmode.colorDstFactor = sf::BlendFactor::SrcColor;
        circle.setScale(.75f, .75f);
        circle.setPosition(400, 300);
        window.draw(circle, blendmode);
        circle.setScale(1.f, 1.f);

        // Display the frame
        window.display();
    }

    // Application has finished
    window.close();

    return 0;
}