int main(int argc, char **argv) {
init_glew();
GLFWwindow *window = initialize_window(g_windowWidth, g_windowHeight, g_gameTitle);
bool running = true;
/* Loop until the user closes the window */
while (running) {
/* Render here */
setColor(0.5f, 0.69f, 1.0f, 1.0f);
/*Swap front and back buffers */
glfwSwapBuffers(window);
/*poll for and process events*/
glfwPollEvents();
running = toggleExit(window, running);
window = toggleFullScreenWindow(window, GLFW_KEY_F11);
}
glfwTerminate();
return EXIT_SUCCESS;
}
GLFWwindow* init_glfw(int window_width, int window_height, const char* title)
{
GLFWwindow* window;
glfwSetErrorCallback(_glfw_error_cb);
if (!glfwInit()) {
LOGP("glfwInit failed.");
exit(-1);
}
//glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
//glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
//glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
//glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
window = glfwCreateWindow(window_width, window_height, title, NULL, NULL);
if (!window) {
LOGP("Error, glfwCreateWindow failed.");
glfwTerminate();
exit(-1);
}
glfwSetMouseButtonCallback(window, glfw_mouse_button_callback);
glfwSetCursorPosCallback(window, glfw_mouse_pos_callback);
glfwMakeContextCurrent(window);
glfwSwapInterval(1);
init_glew();
return window;
}
OpenVrRenderer::OpenVrRenderer(const trance_pb::System& system)
: _initialised{false}
, _success{false}
, _width{0}
, _height{0}
, _system{nullptr}
, _compositor{nullptr}
{
vr::HmdError error;
_system = vr::VR_Init(&error, vr::VRApplication_Scene);
if (!_system || error != vr::VRInitError_None) {
std::cerr << "OpenVR initialization failed" << std::endl;
std::cerr << vr::VR_GetVRInitErrorAsEnglishDescription(error) << std::endl;
return;
}
_initialised = true;
_window.reset(new sf::RenderWindow);
_window->create({}, "trance", sf::Style::None);
_window->setVerticalSyncEnabled(system.enable_vsync());
_window->setFramerateLimit(0);
_window->setVisible(false);
_window->setActive(true);
init_glew();
_compositor = vr::VRCompositor();
if (!_compositor) {
std::cerr << "OpenVR compositor failed" << std::endl;
return;
}
_system->GetRecommendedRenderTargetSize(&_width, &_height);
for (int i = 0; i < 2; ++i) {
GLuint fbo;
GLuint fb_tex;
glGenFramebuffers(1, &fbo);
glBindFramebuffer(GL_FRAMEBUFFER, fbo);
glGenTextures(1, &fb_tex);
glBindTexture(GL_TEXTURE_2D, fb_tex);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA8, _width, _height, 0, GL_RGBA, GL_UNSIGNED_BYTE,
nullptr);
glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, fb_tex, 0);
if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE) {
std::cerr << "framebuffer failed" << std::endl;
return;
}
glBindFramebuffer(GL_FRAMEBUFFER, 0);
_fbo.push_back(fbo);
_fb_tex.push_back(fb_tex);
}
_success = true;
}
int init_engine(SDL_GLContext *context, SDL_Window *window)
{
int img_flags = IMG_INIT_PNG;
if (!(IMG_Init(img_flags) & img_flags)) {
printf("SD_image could not initialize! SDL_image Error: %s\n", IMG_GetError());
return -1;
}
if (init_gl(context, window))
return -1;
if (init_glew())
return -1;
// if (init_effects(shader_programs, shader_infos, LENGTH(shader_programs))) {
// printf("Something went wrong with shader program initialization!\n");
// return -1;
// }
load_effects(
effects.all, LENGTH(effects.all),
shader_file_paths, LENGTH(shader_file_paths),
attribute_strings, LENGTH(attribute_strings),
uniform_strings, LENGTH(uniform_strings));
open_simplex_noise(open_simplex_noise_seed, &osnctx);
SDL_GameControllerEventState(SDL_ENABLE);
/* Open the first available controller. */
SDL_GameController *controller = NULL;
for (int i = 0; i < SDL_NumJoysticks(); ++i) {
printf("Testing controller %i\n", i);
if (SDL_IsGameController(i)) {
controller = SDL_GameControllerOpen(i);
if (controller) {
printf("Successfully opened controller %i\n", i);
break;
} else {
printf("Could not open gamecontroller %i: %s\n", i, SDL_GetError());
}
} else {
printf("Controller %i is not a controller?\n", i);
}
}
init_keyboard();
init_render(); //Located in render.c
if (signal(SIGUSR1, reload_signal_handler) == SIG_ERR) {
printf("An error occurred while setting a signal handler.\n");
}
return 0;
}
gl_context::gl_context(std::string const& name, int width, int height) {
init_glfw();
create_glfw_window(name, width, height);
glfwMakeContextCurrent(_main_window);
TwInit(TW_OPENGL_CORE, nullptr);
TwWindowSize(width, height);
_tweak_bar = TwNewBar("MainBar");
init_glew();
glGenVertexArrays(1, &_vertex_array_id);
glBindVertexArray(_vertex_array_id);
}
void init( float normsize, bool fullscreen )
{
static struct on {
on() { glfwInit(); }
~on() { glfwTerminate(); }
} _;
auto rect = get_screen_rect();
screen_w = rect.first;
screen_h = rect.second;
{
// reinit :P
normsize = ( normsize <= 0 ? 1 : normsize );
w = screen_w * normsize;
h = screen_h * normsize;
}
#if 0
//wglSwapIntervalEXT(1);
glfwOpenWindowHint( GLFW_ACCUM_RED_BITS, 16 );
glfwOpenWindowHint( GLFW_ACCUM_GREEN_BITS, 16 );
glfwOpenWindowHint( GLFW_ACCUM_BLUE_BITS, 16 );
glfwOpenWindowHint( GLFW_ACCUM_ALPHA_BITS, 16 );
if( glfwOpenWindow( w, h, 0,0,0,0,0,0, fullscreen ? GLFW_FULLSCREEN : GLFW_WINDOW ) != GL_TRUE )
{
std::cerr << "<gate/gate.hpp> says: Cant create " << w << 'x' << h << " window!" << std::endl;
exit(1);
}
#endif
window = glfwCreateWindow(w, h, title.c_str(), NULL, NULL);
if (!window)
{
glfwTerminate();
std::cerr << "<gate/gate.hpp> says: Cant create " << w << 'x' << h << " window!" << std::endl;
exit(1);
}
glfwMakeContextCurrent(window);
glfwSetWindowTitle( window, title.c_str() );
resize( w, h );
init_glew();
glInit();
}
gl_window init_gl_context(int w, int h, const char* name){
if(!glfwInit()){
fprintf(stderr, "Error, failed to initialize glfw\n");
exit(EXIT_FAILURE);
}
atexit(glfwTerminate);
glfwSetErrorCallback(handle_error);
glfwWindowHint(GLFW_SAMPLES, 4);//4xAA
glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, 1);
GLFWwindow *win = glfwCreateWindow(w, h, name, NULL, NULL);
if(!win){
fprintf(stderr, "Error creating window\n");
exit(EXIT_FAILURE);
}
glfwMakeContextCurrent(win);
init_glew();
glfwSwapInterval(1);
return win;
}
void THIS::init(parent_t * const & p)
{
printv(DEBUG, "%s\n", __PRETTY_FUNCTION__);
if(p == NULL) return;
setParent(p);
auto app = get_fnd_app();
if(!app->_M_flag.any(neb::fnd::app::util::flag::INIT_GLFW))
{
printv(WARNING, "glfw not initializaed\n");
return;
}
auto g = std::dynamic_pointer_cast<neb::gfx::app::Base>(app->G::get_object());
//auto self = std::dynamic_pointer_cast<THIS>(shared_from_this());
if(window_) return;
// create window
glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GL_TRUE);
//glfwWindowHint(GLFW_OPENGL_FORWARD_COMPAT, GL_TRUE);
//glfwWindowHint(GLFW_VISIBLE, GL_FALSE);
window_ = glfwCreateWindow(
w_,
h_,
title_.c_str(),
NULL,
first_window_
);
if(first_window_ == NULL) {
first_window_ = window_;
}
if(window_ == NULL) {
glfwTerminate();
printv(DEBUG, "glfwCreateWindow failed\n");
exit(EXIT_FAILURE);
}
glfwSetWindowPos(window_, x_, y_);
glfwMakeContextCurrent(window_);
glfwSetWindowPosCallback(
window_,
neb::gfx::app::glfw::static_window_pos_fun);
glfwSetWindowSizeCallback(
window_,
neb::gfx::app::glfw::static_window_size_fun);
glfwSetWindowCloseCallback(
window_,
neb::gfx::app::glfw::static_window_close_fun);
glfwSetWindowRefreshCallback(
window_,
neb::gfx::app::glfw::static_window_refresh_fun);
glfwSetKeyCallback(
window_,
neb::gfx::app::glfw::static_key_fun);
glfwSetMouseButtonCallback(
window_,
neb::gfx::app::glfw::static_mouse_button_fun);
glfwSetCharCallback(
window_,
neb::gfx::app::glfw::staticCharFun);
// add window to app's window map
g->reg(shared_from_this());
//if(all(neb::app::base::option::SHADERS)) create_programs();
g->init_glew();
g->create_programs();
//printf("%s\n",glGetString(GL_SHADING_LANGUAGE_VERSION));
//Check for necessary extensions
if(!GL_ARB_depth_texture || !GL_ARB_shadow)
{
printv(CRITICAL, "I require ARB_depth_texture and ARB_shadow extensionsn\n");
exit(0);//return false;
}
//Shading states
glShadeModel(GL_SMOOTH);
glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
//Depth states
glClearDepth(1.0f);
glDepthFunc(GL_LEQUAL);
glEnable(GL_DEPTH_TEST);
glEnable(GL_CULL_FACE);
glEnable(GL_NORMALIZE);
checkerror("unknown");
}
int main() {
init_glfw();
GLFWwindow* window = create_window(800, 600, "OpenGL");
init_glew();
GLuint vao;
glGenVertexArrays(1, &vao);
glBindVertexArray(vao);
GLuint vbo;
glGenBuffers(1, &vbo);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
GLuint ebo;
glGenBuffers(1, &ebo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ebo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(elements), elements,
GL_STATIC_DRAW);
GLuint vertexShader = compile_shader(GL_VERTEX_SHADER, vertexSource);
GLuint fragmentShader = compile_shader(GL_FRAGMENT_SHADER, fragSource);
GLuint program = link_program(vertexShader, fragmentShader);
glUseProgram(program);
GLint posAttrib = glGetAttribLocation(program, "position");
glVertexAttribPointer(posAttrib, 2, GL_FLOAT, GL_FALSE,
7 * sizeof(float), 0);
glEnableVertexAttribArray(posAttrib);
GLint colorAttrib = glGetAttribLocation(program, "color");
glVertexAttribPointer(colorAttrib, 3, GL_FLOAT, GL_FALSE,
7 * sizeof(float), (void*)(2 * sizeof(float)));
glEnableVertexAttribArray(colorAttrib);
GLint texAttrib = glGetAttribLocation(program, "texcoord");
glVertexAttribPointer(texAttrib, 2, GL_FLOAT, GL_FALSE,
7 * sizeof(float), (void*)(5 * sizeof(float)));
glEnableVertexAttribArray(texAttrib);
GLuint tex;
glGenTextures(1, &tex);
glBindTexture(GL_TEXTURE_2D, tex);
int width, height;
unsigned char* image = SOIL_load_image("../sample.png", &width, &height,
0, SOIL_LOAD_RGB);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB,
GL_UNSIGNED_BYTE, image);
SOIL_free_image_data(image);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
while(!glfwWindowShouldClose(window)) {
glfwSwapBuffers(window);
glfwPollEvents();
if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS) {
glfwSetWindowShouldClose(window, GL_TRUE);
}
// Clear the screen to black
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
glClear(GL_COLOR_BUFFER_BIT);
glUniform1f(glGetUniformLocation(program, "time"), glfwGetTime());
glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);
}
glDeleteTextures(1, &tex);
glDeleteProgram(program);
glDeleteShader(fragmentShader);
glDeleteShader(vertexShader);
glDeleteBuffers(1, &vbo);
glDeleteBuffers(1, &ebo);
glDeleteVertexArrays(1, &vao);
glfwTerminate();
}
int
main (int argc,
char *argv[])
{
char *frag_code = NULL;
glutInit (&argc, argv);
static struct option long_options[] = {
{ "texture", required_argument, NULL, 't' },
{ "geometry", required_argument, NULL, 'g' },
{ "help", no_argument, NULL, 'h' },
{ 0, 0, NULL, 0 }
};
glutInitWindowSize (800, 600);
glutInitDisplayMode (GLUT_RGBA | GLUT_DOUBLE);
glutCreateWindow ("Shadertoy");
init_glew ();
/* option parsing */
while (1)
{
int c, slot, i;
char nearest, repeat;
c = getopt_long (argc, argv, ":t:g:?", long_options, NULL);
if (c == -1)
break;
switch (c)
{
case 'g':
for (i = 0; i < 4; i++)
{
char *token = strsep (&optarg, "x+");
if (!token)
break;
geometry[i] = atof (token);
}
fprintf (stderr, "geometry: %.0fx%.0f+%.0f+%.0f\n",
geometry[0], geometry[1], geometry[2], geometry[3]);
break;
case 't':
if (optarg[0] < '0' || optarg[0] > '3' || strchr (optarg, ':') == NULL)
{
fprintf (stderr, "Argument for texture file needs a slot from 0 to 3\n");
exit (1);
}
slot = optarg[0] - '0';
repeat = 1;
nearest = 0;
for (c = 1; optarg[c] != ':' && optarg[c] != '\0'; c++)
{
switch (optarg[c])
{
case 'r':
repeat = 1;
break;
case 'o':
repeat = 0;
break;
case 'i':
nearest = 0;
break;
case 'n':
nearest = 1;
break;
default:
break;
}
}
if (optarg[c] != ':' ||
!load_texture (optarg + c + 1, GL_TEXTURE_2D, &tex[slot], nearest, repeat))
{
fprintf (stderr, "Failed to load texture. Aborting.\n");
exit (1);
}
break;
case 'h':
case ':':
default:
fprintf (stderr, "Usage:\n %s [options] <shaderfile>\n", argv[0]);
fprintf (stderr, "Options: --help\n");
fprintf (stderr, " --texture [0-3]:<textureimage>\n");
exit (c == ':' ? 1 : 0);
break;
}
}
if (optind != argc - 1)
{
fprintf (stderr, "No shaderfile specified. Aborting.\n");
exit (-1);
}
frag_code = load_file (argv[optind]);
if (!frag_code)
{
fprintf (stderr, "Failed to load Shaderfile. Aborting.\n");
exit (-1);
}
prog = link_program (frag_code);
if (prog < 0)
{
fprintf (stderr, "Failed to link shader program. Aborting\n");
exit (-1);
}
ipc_socket_open (IPC_PORT);
glutDisplayFunc (display);
glutMouseFunc (mouse_press_handler);
glutMotionFunc (mouse_move_handler);
glutKeyboardFunc (keyboard_handler);
redisplay (1000/60);
glutMainLoop ();
return 0;
}