Specular lighting in OpenGL

2022-02-13.01-55-21.mp4

Setup

• Clone

$ git clone https://github.com/aniketrajnish/specular-lighting-opengl.git

• Open the solution file using VS 2014 or newer.

Changing the texture

• Import the albedo and specular maps in the \assets folder.
• Change the albedo and specular names in cube.hpp

Texture tex("assets/your_name.png", "material.diffuse");
Texture tex_specular("assets/your_name.png", "material.specular");

Changing the background

• Change the RGBA values of colour buffer in the rendering loop of main.cpp

glClearColor(// your RGBA here);

Changing the properties of Cubes

Properties of cubes can be changed by making the following changes in main.cpp

• Declaration

Cube cubes[//desired number];

• Adding / Removing position vectors of the cubes accordingly

glm::vec3 cubePositions[] = {
    // add / remove here	
};

• Initialization

for (unsigned int i = 0; i < //desired number; i++) {
    cubes[i] = Cube(cubePositions[i], glm::vec3(//desired size));
    cubes[i].init();    
}

Changing the properties of Lamps

Properties of lamps can be changed by making the following changes in main.cpp

• Declaration

Lamp lamps[//desired number];

• Adding / Removing position vectors of the lamps accordingly

glm::vec3 pointLightPositions[] = {
    // add / remove here	
};

• Initialization

for (unsigned int i = 0; i < //desired number; i++) {
    lamps[i] = Lamp(// rgb of desired color,
    	//desired ambience, //desired diffusion, //desired specular value,
    	1.0f, 0.07f, 0.032f, // attenuation constants
    	pointLightPositions[i], //desired size;
    lamps[i].init();
}

Changing the properties of spotlight

Properties of spotlight can be changed by making the following changes in main.cpp

• Initialization

SpotLight s = {
    Camera::cam.pos, Camera::cam.cameraFront,
    //desired inner cut off, //desired outer cut off,
    1.0f, 0.07f, 0.032f, // attenuation constants
    //desired ambience, //desired diffusion, //desired specular value
};