#include <stdlib.h>
#include <assert.h>
#include <GL/glew.h>
-#ifdef __APPLE__
-#include <GLUT/glut.h>
-#else
-#include <GL/glut.h>
-#endif
+#include <SDL2/SDL.h>
#include "app.h"
-static bool init();
-static void display();
-static void idle();
-static void reshape(int x, int y);
-static void key_press(unsigned char key, int x, int y);
-static void key_release(unsigned char key, int x, int y);
-static void mouse(int bn, int st, int x, int y);
+static bool init(int argc, char **argv);
+static void process_event(SDL_Event *ev);
+static void proc_modkeys();
+
+static SDL_Window *win;
+static SDL_GLContext ctx;
+static bool fullscreen, mouse_grabbed;
+static bool quit;
static unsigned int start_time;
+static unsigned int modkeys;
+
+SDL_GameController *gamepad;
+
+static int scale_factor = 1;
int main(int argc, char **argv)
{
- glutInitWindowSize(1024, 768);
- glutInit(&argc, argv);
- glutInitDisplayMode(GLUT_RGB | GLUT_DEPTH | GLUT_DOUBLE | GLUT_MULTISAMPLE);
- glutCreateWindow("demo");
-
- glutDisplayFunc(display);
- glutIdleFunc(idle);
- glutReshapeFunc(reshape);
- glutKeyboardFunc(key_press);
- glutKeyboardUpFunc(key_release);
- glutMouseFunc(mouse);
- glutMotionFunc(app_mouse_motion);
- glutPassiveMotionFunc(app_mouse_motion);
-
- if(!init()) {
+ if(SDL_Init(SDL_INIT_VIDEO | SDL_INIT_TIMER | SDL_INIT_GAMECONTROLLER) != 0) {
+ fprintf(stderr, "failed to initialize SDL\n");
+ return 1;
+ }
+
+ SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
+ SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 8);
+ SDL_GL_SetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, 1);
+
+ int defpos = SDL_WINDOWPOS_UNDEFINED;
+ unsigned int sdlflags = SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE | SDL_WINDOW_ALLOW_HIGHDPI;
+
+ if(!(win = SDL_CreateWindow("demo", defpos, defpos, 1024, 768, sdlflags))) {
+ // try again without sRGB capability
+ SDL_GL_SetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, 0);
+ if(!(win = SDL_CreateWindow("demo", defpos, defpos, 1024, 768, sdlflags))) {
+ fprintf(stderr, "failed to create window\n");
+ SDL_Quit();
+ return 1;
+ }
+ fprintf(stderr, "failed to get an sRGB framebuffer.\n");
+ }
+ int val;
+ SDL_GL_GetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, &val);
+ printf("SDL says we %s an sRGB framebuffer\n", val ? "got" : "didn't get");
+ fb_srgb = val;
+
+ if(!(ctx = SDL_GL_CreateContext(win))) {
+ fprintf(stderr, "failed to create OpenGL context\n");
+ SDL_Quit();
+ return 1;
+ }
+ SDL_GL_GetDrawableSize(win, &win_width, &win_height);
+ win_aspect = (float)win_width / (float)win_height;
+
+ printf("detected %d joysticks\n", SDL_NumJoysticks());
+ for(int i=0; i<SDL_NumJoysticks(); i++) {
+ if(SDL_IsGameController(i)) {
+ if(!(gamepad = SDL_GameControllerOpen(i))) {
+ fprintf(stderr, "failed to open game controller %i: %s\n", i, SDL_GetError());
+ continue;
+ }
+ printf("Using gamepad: %s\n", SDL_GameControllerNameForIndex(i));
+ }
+ }
+
+ if(!init(argc, argv)) {
+ SDL_Quit();
return 1;
}
- atexit(app_cleanup);
+ app_reshape(win_width, win_height);
+
+ while(!quit) {
+ SDL_Event ev;
+
+ time_msec = SDL_GetTicks() - start_time;
+ while(SDL_PollEvent(&ev)) {
+ process_event(&ev);
+ if(quit) goto break_evloop;
+ }
+
+ app_display();
+ }
+break_evloop:
- glutMainLoop();
+ app_cleanup();
+ SDL_Quit();
return 0;
}
void app_swap_buffers()
{
- glutSwapBuffers();
+ SDL_GL_SwapWindow(win);
}
void app_quit()
{
- exit(0);
+ quit = true;
}
-static bool init()
+unsigned int app_get_modifiers()
{
- glewInit();
+ return modkeys;
+}
- if(!app_init()) {
- return false;
- }
+void app_resize(int x, int y)
+{
+ SDL_SetWindowSize(win, x, y);
+}
- start_time = glutGet(GLUT_ELAPSED_TIME);
- return true;
+void app_fullscreen(bool fs)
+{
+ SDL_SetWindowFullscreen(win, fs ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
+ fullscreen = fs;
}
-static void display()
+void app_toggle_fullscreen()
{
- time_msec = glutGet(GLUT_ELAPSED_TIME) - start_time;
- app_display();
+ app_fullscreen(!fullscreen);
}
-static void idle()
+bool app_is_fullscreen()
{
- glutPostRedisplay();
+ return fullscreen;
}
-static void reshape(int x, int y)
+void app_grab_mouse(bool grab)
{
- win_width = x;
- win_height = y;
+ if(grab) {
+ SDL_WarpMouseInWindow(win, win_width / 2, win_height / 2);
+ }
+ //SDL_SetWindowGrab(win, grab ? SDL_TRUE : SDL_FALSE);
+ //SDL_ShowCursor(grab ? 1 : 0);
+ SDL_SetRelativeMouseMode(grab ? SDL_TRUE : SDL_FALSE);
+ mouse_grabbed = grab;
+}
- app_reshape(x, y);
+void app_toggle_grab_mouse()
+{
+ app_grab_mouse(!mouse_grabbed);
}
-static void key_press(unsigned char key, int x, int y)
+bool app_is_mouse_grabbed()
{
- app_keyboard(key, true);
+ return mouse_grabbed;
}
-static void key_release(unsigned char key, int x, int y)
+
+static bool init(int argc, char **argv)
{
- app_keyboard(key, false);
+ glewInit();
+
+ if(!app_init(argc, argv)) {
+ return false;
+ }
+
+ start_time = SDL_GetTicks();
+ return true;
}
-static void mouse(int bn, int st, int x, int y)
+static void process_event(SDL_Event *ev)
{
- int bidx = bn - GLUT_LEFT_BUTTON;
- bool down = st == GLUT_DOWN;
+ switch(ev->type) {
+ case SDL_QUIT:
+ quit = true;
+ break;
+
+ case SDL_KEYDOWN:
+ case SDL_KEYUP:
+ proc_modkeys();
+ app_keyboard(ev->key.keysym.sym, ev->key.state == SDL_PRESSED);
+ break;
+
+ case SDL_MOUSEBUTTONDOWN:
+ case SDL_MOUSEBUTTONUP:
+ proc_modkeys();
+ app_mouse_button(ev->button.button - SDL_BUTTON_LEFT, ev->button.state == SDL_PRESSED,
+ ev->button.x * scale_factor, ev->button.y * scale_factor);
+ break;
+
+ case SDL_MOUSEMOTION:
+ if(mouse_grabbed) {
+ app_mouse_delta(ev->motion.xrel, ev->motion.yrel);
+ } else {
+ app_mouse_motion(ev->motion.x * scale_factor, ev->motion.y * scale_factor);
+ }
+ break;
+
+ case SDL_WINDOWEVENT:
+ if(ev->window.event == SDL_WINDOWEVENT_SIZE_CHANGED) {
+ SDL_GL_GetDrawableSize(win, &win_width, &win_height);
+ win_aspect = (float)win_width / (float)win_height;
+ scale_factor = win_width / ev->window.data1;
+ app_reshape(win_width, win_height);
+ }
+ break;
+
+ case SDL_CONTROLLERAXISMOTION:
+ app_gamepad_axis(ev->caxis.axis, ev->caxis.value / 32768.0f);
+ break;
+
+ case SDL_CONTROLLERBUTTONDOWN:
+ case SDL_CONTROLLERBUTTONUP:
+ app_gamepad_button(ev->cbutton.button, ev->type == SDL_CONTROLLERBUTTONDOWN);
+ break;
+ }
+}
- app_mouse_button(bidx, down, x, y);
+static void proc_modkeys()
+{
+ modkeys = 0;
+ SDL_Keymod sdlmod = SDL_GetModState();
+ if(sdlmod & KMOD_SHIFT) {
+ modkeys |= MOD_SHIFT;
+ }
+ if(sdlmod & KMOD_ALT) {
+ modkeys |= MOD_ALT;
+ }
+ if(sdlmod & KMOD_CTRL) {
+ modkeys |= MOD_CTRL;
+ }
}
projects / laserbrain_demo / blobdiff