void FBO::createRenderTarget(std::string textureName){
chkGLErr();
bind();
auto texID = Texture::createTextureID(textureName);
glBindTexture(GL_TEXTURE_2D, texID);
chkGLErr();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
chkGLErr();
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
chkGLErr();
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, _size.x, _size.y, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0);
chkGLErr();
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0+_renderTargets.size(), GL_TEXTURE_2D, texID, 0);
chkGLErr();
chkGLErr();
_renderTargets.push_back(GL_COLOR_ATTACHMENT0+_renderTargets.size());
_textures.push_back(texID);
chkGLErr();
unbind();
LOG_INFO("Render target " << textureName << " created with size" << _size);
}
void Light::set(){
chkGLErr();
int light = GL_LIGHT0+_id;
glEnable(light);chkGLErr();
glLightfv(light, GL_AMBIENT, glm::value_ptr(_ambientColor));chkGLErr();
glLightfv(light, GL_DIFFUSE, glm::value_ptr(_diffuseColor));chkGLErr();
glLightfv(light, GL_SPECULAR, glm::value_ptr(_specularColor));chkGLErr();
chkGLErr();
/*
glLightf(light, GL_CONSTANT_ATTENUATION, _attenuation.x);
glLightf(light, GL_LINEAR_ATTENUATION, _attenuation.y);
glLightf(light, GL_QUADRATIC_ATTENUATION, _attenuation.z);*/
glLightfv(light, GL_POSITION, glm::value_ptr(_position));
chkGLErr();
glLightf(light, GL_SPOT_CUTOFF, _spotCutOff);
glLightf(light, GL_SPOT_EXPONENT, _spotExponent);
glLightfv(light, GL_SPOT_DIRECTION, glm::value_ptr(_spotDirection));
chkGLErr();
}
void resize(int width,int height){
chkGLErr();
glMatrixMode(GL_PROJECTION);
chkGLErr();
winSize.x = width;
winSize.y = height;
glLoadMatrixf(glm::value_ptr(glm::ortho(0.f,1.f,0.f,1.f)));
chkGLErr();
glMatrixMode(GL_MODELVIEW);
glViewport(0,0,width,height);
chkGLErr();
}
int main( int argc, char* argv[] )
{
if (glfwInit() != GL_TRUE){
std::cout << "Could not init glfw"<< std::endl;
return 2;
}
if (glfwOpenWindow(600, 600, 8, 8, 8, 8, 32, 0, GLFW_WINDOW) != GL_TRUE){
std::cout << "Could not create window"<< std::endl;
return 3;
}
glfwSetWindowTitle ("rGraphicsLibrary - Game of Life");
if(glewInit() != GLEW_OK)
{
std::cerr << "Failed to init glew" << std::endl;
exit(1);
}
chkGLErr();
std::cout << "OpenGL Version: " << OpenGLInfo::getOpenGLVersion() << std::endl;
std::cout << "Glew Version: " << OpenGLInfo::getGlewVersion() << std::endl;
std::cout << "GLSL Version: " << OpenGLInfo::getGLSLVersion() << std::endl;
std::cout << "OpenGL Vendor: " << OpenGLInfo::getOpenGLVendor() << std::endl;
std::cout << "OpenGL Renderer: "<< OpenGLInfo::getOpenGLRenderer() << std::endl;
chkGLErr();
init();
glfwSetWindowSizeCallback(GLFWwindowsizefun(resize));
while(true){
if (glfwGetKey(GLFW_KEY_ESC) == GLFW_PRESS)
break;
evolve();
draw();
glfwSleep(0.5);
}
return 0;
}
void FBO::init(std::string depthTexName){
chkGLErr();
if(_isInit) return;
_isInit = true;
_depthTex = Texture::createTextureID(depthTexName);
glBindTexture(GL_TEXTURE_2D, _depthTex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_DEPTH_TEXTURE_MODE, GL_INTENSITY);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_R_TO_TEXTURE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_FUNC, GL_LEQUAL);
glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT32, _size.x, _size.y, 0, GL_DEPTH_COMPONENT, GL_UNSIGNED_BYTE, 0);
glBindTexture(GL_TEXTURE_2D, 0);
chkGLErr();
glGenFramebuffersEXT(1, &_fbo);
bind();
glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT, GL_TEXTURE_2D, _depthTex, 0);
fboerror();
unbind();
chkGLErr();
LOG_INFO("FBO initzilized with size " << _size << " and depth buffer " << depthTexName);
}
void draw(){
chkGLErr();
glClear(GL_COLOR_BUFFER_BIT);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glScalef(1.0f/winSize.x,1.0f/winSize.y,0);
float dx = winSize.x / (float) dim.x;
float dy = winSize.y / (float) dim.y;
glBegin(GL_QUADS);
glColor3f(1,1,0);
for(int x = 0;x<dim.x;x++)for(int y = 0;y<dim.y;y++)if(grid[x][y]){
glVertex2f(x*dx,y*dy);
glVertex2f(x*dx+dx,y*dy);
glVertex2f(x*dx+dx,y*dy+dy);
glVertex2f(x*dx,y*dy+dy);
}
glEnd();
glfwSwapBuffers();
chkGLErr();
}
void init(){
chkGLErr();
glClearColor(0,0,0,0);
grid = new bool*[dim.x];
tmpGrid = new bool*[dim.x];
for(int i = 0;i<dim.x;i++){
grid[i] = new bool[dim.y];
tmpGrid[i] = new bool[dim.y];
for(int j = 0;j<dim.y;j++){
grid[i][j] = false; //rand() % 100 < 10;
tmpGrid[i][j] = false;
}
}
int o = 5;
grid[4+o][1+o] = true;
grid[5+o][1+o] = true;
grid[8+o][1+o] = true;
grid[9+o][1+o] = true;
grid[10+o][1+o] = true;
grid[1+o][2+o] = true;
grid[2+o][2+o] = true;
grid[3+o][2+o] = true;
grid[5+o][2+o] = true;
grid[7+o][2+o] = true;
grid[9+o][2+o] = true;
grid[10+o][2+o] = true;
grid[1+o][3+o] = true;
grid[2+o][3+o] = true;
grid[3+o][3+o] = true;
grid[4+o][3+o] = true;
grid[5+o][3+o] = true;
grid[8+o][3+o] = true;
grid[9+o][3+o] = true;
grid[10+o][3+o] = true;
grid[1+o][4+o] = true;
grid[3+o][4+o] = true;
grid[5+o][4+o] = true;
grid[7+o][4+o] = true;
grid[9+o][4+o] = true;
grid[11+o][4+o] = true;
grid[2+o][5+o] = true;
grid[4+o][5+o] = true;
grid[6+o][5+o] = true;
grid[8+o][5+o] = true;
grid[9+o][5+o] = true;
grid[10+o][5+o] = true;
grid[11+o][5+o] = true;
grid[5+o][6+o] = true;
grid[6+o][6+o] = true;
grid[7+o][6+o] = true;
grid[1+o][7+o] = true;
grid[2+o][7+o] = true;
grid[3+o][7+o] = true;
grid[4+o][7+o] = true;
grid[6+o][7+o] = true;
grid[8+o][7+o] = true;
grid[10+o][7+o] = true;
grid[1+o][8+o] = true;
grid[3+o][8+o] = true;
grid[5+o][8+o] = true;
grid[7+o][8+o] = true;
grid[9+o][8+o] = true;
grid[11+o][8+o] = true;
grid[2+o][9+o] = true;
grid[3+o][9+o] = true;
grid[4+o][9+o] = true;
grid[7+o][9+o] = true;
grid[8+o][9+o] = true;
grid[9+o][9+o] = true;
grid[10+o][9+o] = true;
grid[11+o][9+o] = true;
grid[2+o][10+o] = true;
grid[3+o][10+o] = true;
grid[5+o][10+o] = true;
grid[7+o][10+o] = true;
grid[9+o][10+o] = true;
grid[10+o][10+o] = true;
grid[11+o][10+o] = true;
grid[2+o][11+o] = true;
grid[3+o][11+o] = true;
grid[4+o][11+o] = true;
grid[7+o][11+o] = true;
grid[8+o][11+o] = true;
chkGLErr();
}