Set up project

.gitignore

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+build/*
+!build/.keep
+
+gross

Makefile

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+CC = g++ -std=c++17
+CFLAGS = -g -O0 -Wall --pedantic
+LFLAGS = -lsfml-system -lsfml-network -lsfml-window -lsfml-graphics
+
+RM = rm -f
+
+SOURCEFILES = cpp
+SRCDIR = src
+TMPDIR = build
+TARGET = gross
+FILES = main
+
+#SOURCES = $(patsubst %,$(SRCDIR)/%.cpp,$(FILES))
+OBJECTS = $(patsubst %,$(TMPDIR)/%.o,$(FILES))
+DEPS    = $(patsubst %,$(TMPDIR)/%.d,$(FILES))
+
+.PHONY: clean run remake
+
+all: $(TARGET)
+
+# run the target
+run: $(TARGET)
+	./$<
+
+# clean up the build directory
+clean:
+	$(RM) $(TARGET)
+	$(RM) $(OBJECTS)
+	$(RM) $(DEPS)
+
+# clean up and make again
+remake: clean $(TARGET)
+
+# link the final target
+$(TARGET): $(OBJECTS)
+	$(CC) $(OBJECTS) $(LFLAGS) -o $@
+
+# compiling to .o file
+$(TMPDIR)/%.o: $(SRCDIR)/%.$(SOURCEFILES)
+	$(CC) $(CFLAGS) -c $< -o $@
+
+# generating .d dependency files
+$(TMPDIR)/%.d: $(SRCDIR)/%.$(SOURCEFILES)
+	$(CC) $(CFLAGS) -MM  $< -MT $(TMPDIR)/$*.o -MF $(TMPDIR)/$*.d
+
+# using dependency files
+-include $(DEPS)

src/main.cpp

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+// sample code from http://www.glusoft.com/tuto/SFML-shader-example.php
+
+#include <SFML/Graphics.hpp>
+#include <iostream>
+
+int main() {
+	const float winW = 800;
+	const float winH = 600;
+	
+	sf::RenderWindow window(sf::VideoMode(winW, winH), "gross");
+	window.setMouseCursorVisible(false); // hide the cursor
+	
+	// Create a texture and a sprite for the shader
+	sf::Texture tex;
+	tex.create(winW, winH);
+	sf::Sprite spr(tex);
+	
+	sf::Shader shader;
+	shader.loadFromFile("fire.glsl", sf::Shader::Fragment); // load the shader
+	
+	if (!shader.isAvailable()) {
+		std::cout << "The shader is not available\n";
+	}
+	
+	// Set the resolution parameter (the resoltion is divided to make the fire smaller)
+	shader.setParameter("resolution", sf::Vector2f(winW / 2, winH / 2));
+	
+	// Use a timer to obtain the time elapsed
+	sf::Clock clk;
+	clk.restart(); // start the timer
+	
+	while (window.isOpen()) {
+		// Event handling
+		sf::Event event;
+		
+		while (window.pollEvent(event)) {
+			// Exit the app when a key is pressed
+			if (event.type == sf::Event::KeyPressed) 
+				window.close();
+		}
+		
+		// Set the others parameters who need to be updated every frames
+		shader.setParameter("time", clk.getElapsedTime().asSeconds());
+		
+		sf::Vector2i mousePos = sf::Mouse::getPosition(window);
+		shader.setParameter("mouse", sf::Vector2f(mousePos.x, mousePos.y - winH/2));
+		
+		// Draw the sprite with the shader on it
+		window.clear();
+		window.draw(spr, &shader);
+		window.display();
+	}
+	
+	return 0;
+}