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c_cpp
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#include <iostream>
#include <glad/glad.h>
#include <GLFW/glfw3.h>
#include <cmath>
#include "include/Shader.h"
#define STB_IMAGE_IMPLEMENTATION
#include "include/stb_image.h"
//for matrix transformation
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
void framebuffer_size_callback(GLFWwindow*,int,int);
void update(GLFWwindow*);
void key_callback_function(GLFWwindow*,int,int,int,int);
void process_input(GLFWwindow* window);
void mouse_callback(GLFWwindow* ,double ,double);
void scroll_callback(GLFWwindow* ,double ,double);
//glm::vec3 position;
const int SCR_WIDTH = 800;
const int SCR_HEIGHT = 600;
glm::vec3 cameraPos = glm::vec3 (0.0f,0.0f,3.0f);
glm::vec3 cameraFront = glm::vec3 (0.0f,0.0f,-1.0f);
glm::vec3 cameraUp = glm::vec3 (0.0f,1.0f,0.0f);
//za glatkocu kamere imamo proteklo vreme
float deltaTime = 0.0f;
float lastTime = 0.0f;
float speed = 1.0f;
//za pokrete misa
bool firstMouse = true;
float yaw = -90.0f;
float pitch = 0.0f;
float lastX = SCR_WIDTH /2;
float lastY = SCR_HEIGHT /2;
float fov = 45.0f;
//lighting
glm::vec3 lightPos(1.2f, 1.0f, 2.0f);
int main() {
glfwInit();
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
GLFWwindow *window = glfwCreateWindow(SCR_WIDTH,SCR_HEIGHT,"Hello", nullptr, nullptr);
if(window == nullptr){
std::cout<<"FAILED TO CREATE WINDOW\n";
glfwTerminate();
return EXIT_FAILURE;
}
glfwMakeContextCurrent(window);
glfwSetFramebufferSizeCallback(window,framebuffer_size_callback);
glfwSetCursorPosCallback(window,mouse_callback);
glfwSetScrollCallback(window,scroll_callback);
//glfwSetKeyCallback(window,key_callback_function);
if(!gladLoadGLLoader((GLADloadproc) glfwGetProcAddress)){
std::cout<<"FAILED TO LOAD GLAD\n";
glfwTerminate();
return EXIT_FAILURE;
}
glfwSetInputMode(window,GLFW_CURSOR,GLFW_CURSOR_DISABLED);
glEnable(GL_DEPTH_TEST);
Shader lightingShader ("/home/mihailo/CLionProjects/GL_Vezbe/resources/shaders/colors.vert","/home/mihailo/CLionProjects/GL_Vezbe/resources/shaders/colors.frag");
Shader lightCubeShader ("/home/mihailo/CLionProjects/GL_Vezbe/resources/shaders/lightCube.vert","/home/mihailo/CLionProjects/GL_Vezbe/resources/shaders/lightCube.frag");
//FIXME
//Popraviti slanje putanje da se ne stavljaju apsolutne putanje nego relativne ali od korena projekta!!!
float vertices[] = {
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f,
0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f,
-0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 1.0f, 1.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, -0.5f, -1.0f, 0.0f, 0.0f, 1.0f, 1.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, -0.5f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f,
-0.5f, -0.5f, 0.5f, -1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
-0.5f, 0.5f, 0.5f, -1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f,
0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f,
0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 1.0f, 1.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f,
0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f,
-0.5f, -0.5f, 0.5f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f,
-0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f,
0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f,
0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f,
-0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f,
-0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f
};
//pozicije kocki
glm::vec3 cubePositions[] = {
glm::vec3( 0.0f, 0.0f, 0.0f),
glm::vec3( 2.0f, 5.0f, -15.0f),
glm::vec3(-1.5f, -2.2f, -2.5f),
glm::vec3(-3.8f, -2.0f, -12.3f),
glm::vec3( 2.4f, -0.4f, -3.5f),
glm::vec3(-1.7f, 3.0f, -7.5f),
glm::vec3( 1.3f, -2.0f, -2.5f),
glm::vec3( 1.5f, 2.0f, -2.5f),
glm::vec3( 1.5f, 0.2f, -1.5f),
glm::vec3(-1.3f, 1.0f, -1.5f)
};
//pozicije svetala
glm::vec3 pointLightPositions[] = {
glm::vec3( 0.7f, 0.2f, 2.0f),
glm::vec3( 2.3f, -3.3f, -4.0f),
glm::vec3(-4.0f, 2.0f, -12.0f),
glm::vec3( 0.0f, 0.0f, -3.0f)
};
//unsigned int indexes[] = {
// 0,1,2,
// 0,2,3
//};
unsigned VBO,cubeVAO;
glGenVertexArrays(1,&cubeVAO); //napravi VAO
glGenBuffers(1,&VBO); //napravi bafer VBO
glBindBuffer(GL_ARRAY_BUFFER,VBO); //aktiviramo bafer
glBufferData(GL_ARRAY_BUFFER,sizeof(vertices),vertices,GL_STATIC_DRAW); //posalji podatke na bafer
glBindVertexArray(cubeVAO); //aktiviraj VAO
glVertexAttribPointer(0,3,GL_FLOAT,GL_FALSE,8*sizeof(float),(void*)0);
glVertexAttribPointer(1,3,GL_FLOAT,GL_FALSE,8*sizeof(float),(void*)(3*sizeof(float)));
glVertexAttribPointer(2,2,GL_FLOAT,GL_FALSE,8*sizeof(float),(void*)(6*sizeof(float)));
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glEnableVertexAttribArray(2);
//generisanje za lightCube
unsigned lightCubeVAO;
glGenVertexArrays(1,&lightCubeVAO);
glBindVertexArray(lightCubeVAO);
glBindBuffer(GL_ARRAY_BUFFER,VBO);
glVertexAttribPointer(0,3,GL_FLOAT,GL_FALSE,8*sizeof(float),(void*)0);
glEnableVertexAttribArray(0);
//texture
unsigned int defuseMap;
glGenTextures(1,&defuseMap);
int width,height,nrComponents;
unsigned char* data = stbi_load("/home/mihailo/CLionProjects/GL_Vezbe/resources/textures/container2.png",&width,&height,&nrComponents,0);
if(data){
GLenum format;
if(nrComponents == 1)
format = GL_RED;
else if(nrComponents == 3)
format = GL_RGB;
else if(nrComponents = 4)
format = GL_RGBA;
glBindTexture(GL_TEXTURE_2D,defuseMap);
glTexImage2D(GL_TEXTURE_2D,0,format,width,height,0,format,GL_UNSIGNED_BYTE,data);
glGenerateMipmap(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GLFW_REPEAT);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GLFW_REPEAT);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
stbi_image_free(data);
}
else{
std::cerr<<"FAILED TO LOAD TEXTURE\n";
stbi_image_free(data);
//glfwTerminate();
}
unsigned int specularMap;
glGenTextures(1,&specularMap);
data = stbi_load("/home/mihailo/CLionProjects/GL_Vezbe/resources/textures/container2_specular.png",&width,&height,&nrComponents,0);
if(data){
GLenum format;
if(nrComponents == 1)
format = GL_RED;
else if(nrComponents == 3)
format = GL_RGB;
else if(nrComponents = 4)
format = GL_RGBA;
glBindTexture(GL_TEXTURE_2D,specularMap);
glTexImage2D(GL_TEXTURE_2D,0,format,width,height,0,format,GL_UNSIGNED_BYTE,data);
glGenerateMipmap(GL_TEXTURE_2D);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GLFW_REPEAT);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GLFW_REPEAT);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR_MIPMAP_LINEAR);
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR);
stbi_image_free(data);
}
else{
std::cerr<<"FAILED TO LOAD TEXTURE\n";
stbi_image_free(data);
//glfwTerminate();
}
lightingShader.use();
lightingShader.setInt("material.diffuse",0);
lightingShader.setInt("material.specular",1);
//**razvezivanje objekata**//
//glBindBuffer(GL_ARRAY_BUFFER,0); //razvezi bafer
//glBindVertexArray(0); //razvezi VAO
//RENDER LOOP!!!
while(!glfwWindowShouldClose(window)){
glfwPollEvents();
process_input(window); //ako hocesmo da se jednom registruje jedan taster koristimo setKeyCallback
//ako zelimo da se na primer pomera sve vreme tako sto drzimo taster onda radimo preko process_input()
//jer se radi glfwGetKey() koji registruje sve dok se taster drzi!!!
//brojimo frejmove i proteklo vreme
float currentTime = glfwGetTime();
deltaTime = currentTime - lastTime;
lastTime = currentTime;
glClearColor(0.0f,0.0f,0.0f,1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
//aktivacija texture
glActiveTexture(GL_TEXTURE0);
glBindTexture(GL_TEXTURE_2D,defuseMap);
glActiveTexture(GL_TEXTURE1);
glBindTexture(GL_TEXTURE_2D,specularMap);
//model,projekcija i pogled matrice,CAMERA
//glm::mat4 model = glm::mat4(1.0f);
glm::mat4 view = glm::mat4(1.0f);
glm::mat4 projection = glm::mat4(1.0f);
glm::vec3 lightColor = glm::vec3(1.0f,1.0f,1.0f);
//glm::vec3 lightPos(sin(glfwGetTime())*2.0f, sin(glfwGetTime()), cos(glfwGetTime())*2.0f);
view = glm::lookAt(cameraPos,cameraPos + cameraFront,cameraUp);
projection = glm::perspective(glm::radians(fov),(float)SCR_WIDTH/SCR_WIDTH,0.1f,100.0f);
//kocka
lightingShader.use();
lightingShader.setMat4("view",view);
lightingShader.setMat4("projection",projection);
lightingShader.setVec3("viewPos",cameraPos);
lightingShader.setFloat("material.shininess",32.0f);
// directional light
lightingShader.setVec3("dirLight.direction", -0.2f, -1.0f, -0.3f);
lightingShader.setVec3("dirLight.ambient", 0.05f, 0.05f, 0.05f);
lightingShader.setVec3("dirLight.diffuse", 0.4f, 0.4f, 0.4f);
lightingShader.setVec3("dirLight.specular", 0.5f, 0.5f, 0.5f);
// point light 1
lightingShader.setVec3("pointLights[0].position", pointLightPositions[0]);
lightingShader.setVec3("pointLights[0].ambient", 0.05f, 0.05f, 0.05f);
lightingShader.setVec3("pointLights[0].diffuse", 0.8f, 0.8f, 0.8f);
lightingShader.setVec3("pointLights[0].specular", 1.0f, 1.0f, 1.0f);
lightingShader.setFloat("pointLights[0].constant", 1.0f);
lightingShader.setFloat("pointLights[0].linear", 0.09);
lightingShader.setFloat("pointLights[0].quadratic", 0.032);
// point light 2
lightingShader.setVec3("pointLights[1].position", pointLightPositions[1]);
lightingShader.setVec3("pointLights[1].ambient", 0.05f, 0.05f, 0.05f);
lightingShader.setVec3("pointLights[1].diffuse", 0.8f, 0.8f, 0.8f);
lightingShader.setVec3("pointLights[1].specular", 1.0f, 1.0f, 1.0f);
lightingShader.setFloat("pointLights[1].constant", 1.0f);
lightingShader.setFloat("pointLights[1].linear", 0.09);
lightingShader.setFloat("pointLights[1].quadratic", 0.032);
// point light 3
lightingShader.setVec3("pointLights[2].position", pointLightPositions[2]);
lightingShader.setVec3("pointLights[2].ambient", 0.05f, 0.05f, 0.05f);
lightingShader.setVec3("pointLights[2].diffuse", 0.8f, 0.8f, 0.8f);
lightingShader.setVec3("pointLights[2].specular", 1.0f, 1.0f, 1.0f);
lightingShader.setFloat("pointLights[2].constant", 1.0f);
lightingShader.setFloat("pointLights[2].linear", 0.09);
lightingShader.setFloat("pointLights[2].quadratic", 0.032);
// point light 4
lightingShader.setVec3("pointLights[3].position", pointLightPositions[3]);
lightingShader.setVec3("pointLights[3].ambient", 0.05f, 0.05f, 0.05f);
lightingShader.setVec3("pointLights[3].diffuse", 0.8f, 0.8f, 0.8f);
lightingShader.setVec3("pointLights[3].specular", 1.0f, 1.0f, 1.0f);
lightingShader.setFloat("pointLights[3].constant", 1.0f);
lightingShader.setFloat("pointLights[3].linear", 0.09);
lightingShader.setFloat("pointLights[3].quadratic", 0.032);
// spotLight
lightingShader.setVec3("spotLight.position", cameraPos);
lightingShader.setVec3("spotLight.direction", cameraFront);
lightingShader.setVec3("spotLight.ambient", 0.0f, 0.0f, 0.0f);
lightingShader.setVec3("spotLight.diffuse", 1.0f, 1.0f, 1.0f);
lightingShader.setVec3("spotLight.specular", 1.0f, 1.0f, 1.0f);
lightingShader.setFloat("spotLight.constant", 1.0f);
lightingShader.setFloat("spotLight.linear", 0.09);
lightingShader.setFloat("spotLight.quadratic", 0.032);
lightingShader.setFloat("spotLight.cutOff", glm::cos(glm::radians(12.5f)));
lightingShader.setFloat("spotLight.outerCutOff", glm::cos(glm::radians(15.0f)));
glBindVertexArray(cubeVAO);
for(int i = 0;i<10;i++){
glm::mat4 model = glm::mat4(1.0f);
float angle = 20.0 * i;
model = glm::translate(model,cubePositions[i]);
model = glm::rotate(model,angle,glm::vec3(1.0f,0.3f,0.5f));
lightingShader.setMat4("model",model);
glDrawArrays(GL_TRIANGLES,0,36);
}
//izvor svetlosti(kocke)
lightCubeShader.use();
lightCubeShader.setVec3("lightColor",lightColor);
lightCubeShader.setMat4("view",view);
lightCubeShader.setMat4("projection",projection);
glBindVertexArray(lightCubeVAO);
for(int i=0;i<4;i++){
glm::mat4 model = glm::mat4 (1.0f);
model = glm::translate(model,pointLightPositions[i]);
model = glm::scale(model,glm::vec3(0.2f));
lightCubeShader.setMat4("model",model);
glDrawArrays(GL_TRIANGLES,0,36);
}
//update(window);
glfwSwapBuffers(window);
}
glDeleteVertexArrays(1,&lightCubeVAO);
glDeleteVertexArrays(1,&cubeVAO);
glDeleteBuffers(1,&VBO);
lightingShader.deleteProgram();
lightCubeShader.deleteProgram();
glfwTerminate();
return 0;
}
void framebuffer_size_callback(GLFWwindow* window,int width,int height){
glViewport(0,0,width,height);
}
void key_callback_function(GLFWwindow* window,int key,int scancode,int action,int mode){
if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
glfwSetWindowShouldClose(window, true);
}
//if(key == GLFW_KEY_UP && action == GLFW_PRESS){
// position.y += 0.02f;
//}
//if(key == GLFW_KEY_DOWN && action == GLFW_PRESS){
// position.y -= 0.02f;
//}
//if(key == GLFW_KEY_LEFT && action == GLFW_PRESS){
// position.x -= 0.02;
//}
//if(key == GLFW_KEY_RIGHT && action == GLFW_PRESS){
// position.x += 0.02;
//}
}
void update(GLFWwindow* window){
}
void process_input(GLFWwindow *window){
if(glfwGetKey(window,GLFW_KEY_ESCAPE) == GLFW_PRESS){
glfwSetWindowShouldClose(window,true);
}
float cameraSpeed = 2.5 * deltaTime * speed;
if(glfwGetKey(window,GLFW_KEY_W) == GLFW_PRESS){
cameraPos += cameraSpeed * cameraFront;
}
if(glfwGetKey(window,GLFW_KEY_S) == GLFW_PRESS){
cameraPos -= cameraSpeed * cameraFront;
}
if(glfwGetKey(window,GLFW_KEY_A) == GLFW_PRESS){
cameraPos -= glm::normalize(glm::cross(cameraFront,cameraUp)) * cameraSpeed;
}
if(glfwGetKey(window,GLFW_KEY_D) == GLFW_PRESS){
cameraPos += glm::normalize(glm::cross(cameraFront,cameraUp)) * cameraSpeed;
}
if(glfwGetKey(window,GLFW_KEY_LEFT_SHIFT) == GLFW_PRESS){
speed = 5.0f;
}
if(glfwGetKey(window,GLFW_KEY_LEFT_SHIFT) == GLFW_RELEASE){
speed = 1.0f;
}
//FPS CAMERA LOOK
//cameraPos.y = 0.0f;
}
void scroll_callback(GLFWwindow *window, double xoff, double yoff) {
fov -= (float)yoff;
if(fov < 15.0f)
fov = 15.0f;
if(fov > 45.0f)
fov = 45.0f;
}
void mouse_callback(GLFWwindow * window, double xpos, double ypos) {
if(firstMouse){
lastX = xpos;
lastY = ypos;
firstMouse = false;
}
float xoffset = xpos - lastX;
float yoffset = lastY - ypos;
lastX = xpos;
lastY = ypos;
float sens = 0.05;
xoffset *= sens;
yoffset *= sens;
yaw += xoffset;
pitch += yoffset;
if(pitch > 89.0f)
pitch = 89.0f;
if(pitch < -89.0f)
pitch = -89.0f;
glm::vec3 direction;
direction.x = cos(glm::radians(yaw)) * cos(glm::radians(pitch));
direction.y = sin(glm::radians(pitch));
direction.z = sin(glm::radians(yaw)) * cos(glm::radians(pitch));
cameraFront = glm::normalize(direction);
}
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