X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=laserbrain_demo;a=blobdiff_plain;f=src%2Fmain.cc;h=e3c8a739d3f35d3963ba50372f69e67b27b35a91;hp=772b63c71f06f6a7d0862ee41fd1e0641080e070;hb=215f16e2f26cc2acc79255bab06f13452ec06ae5;hpb=ccc1a688b59e25bb934a0d3e2bbf477960068d4f

diff --git a/src/main.cc b/src/main.cc
index 772b63c..e3c8a73 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -2,455 +2,272 @@
 #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"
-#include "sdr.h"
-#include "shadow.h"
-#include "texture.h"
-#include "machine.h"
-#include "meshgen.h"
-
-static bool init();
-static void cleanup();
-static void display();
-static void idle();
-static void draw_scene();
-static void draw_gears();
-static void reshape(int x, int y);
-static void keyb(unsigned char key, int x, int y);
-static void mouse(int bn, int st, int x, int y);
-static void motion(int x, int y);
-static void passive_motion(int x, int y);
-static Gear *pick_gear(int x, int y);
-
-static int win_width, win_height;
-
-static float cam_dist = 0.25;
-static float cam_theta, cam_phi = 20;
-static int prev_mx, prev_my;
-static bool bnstate[8];
-
-static Mat4 view_matrix;
-
-static unsigned int start_time, prev_msec;
-static Machine *machine;
-static Gear *hover_gear, *sel_gear;
-static HitPoint pick_hit;
-static Vec3 sel_hit_pos;
-
-static unsigned int sdr_shadow_notex;
-static int dbg_show_shadowmap;
-
-static TextureSet texman;
-static Texture *envmap;
-static Mesh *skydome;
-static unsigned int sdr_skydome;
 
+static bool init(int argc, char **argv);
+static void process_event(SDL_Event *ev);
+static void proc_modkeys();
+static int translate_keysym(SDL_Keycode sym);
+
+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("Antikythera");
-
-	glutDisplayFunc(display);
-	glutIdleFunc(idle);
-	glutReshapeFunc(reshape);
-	glutKeyboardFunc(keyb);
-	glutMouseFunc(mouse);
-	glutMotionFunc(motion);
-	glutPassiveMotionFunc(passive_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;
 	}
-	atexit(cleanup);
 
-	glutMainLoop();
-	return 0;
-}
+	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLEBUFFERS, 1);
+	SDL_GL_SetAttribute(SDL_GL_MULTISAMPLESAMPLES, 8);
+	SDL_GL_SetAttribute(SDL_GL_FRAMEBUFFER_SRGB_CAPABLE, 1);
+#ifndef NDEBUG
+	SDL_GL_SetAttribute(SDL_GL_CONTEXT_FLAGS, SDL_GL_CONTEXT_DEBUG_FLAG);
+#endif
 
-static bool init()
-{
-	glewInit();
-
-	glEnable(GL_MULTISAMPLE);
-	glEnable(GL_DEPTH_TEST);
-	glEnable(GL_CULL_FACE);
-	glEnable(GL_LIGHTING);
-	glEnable(GL_NORMALIZE);
-
-	Mesh::use_custom_sdr_attr = false;
-
-	machine = new Machine;
-
-	const float pitch = 10.0f;
-
-	Gear *gear1 = new Gear;
-	gear1->pos = Vec3(-50, 0, 0);
-	gear1->set_teeth(16, pitch);
-	gear1->gen_mesh();
-	gear1->color = Vec3(0.35, 0.6, 0.8);
-	machine->add_gear(gear1);
-
-	Gear *gear2 = new Gear;
-	gear2->set_teeth(32, pitch);
-	gear2->pos = gear1->pos + Vec3(gear1->radius + gear2->radius - gear1->teeth_length * 0.75, 0, 0);
-	gear2->thickness = 5;
-	gear2->gen_mesh();
-	machine->add_gear(gear2);
-
-	Gear *gear3 = new Gear;
-	gear3->set_teeth(8, pitch);
-	gear3->pos = gear2->pos + Vec3(0, gear2->radius + gear3->radius - gear2->teeth_length * 0.75, 0);
-	gear3->gen_mesh();
-	machine->add_gear(gear3);
-	gear3->color = Vec3(0.5, 0.8, 0.6);
-
-	Gear *subgear = new Gear;
-	subgear->set_teeth(10, pitch);
-	subgear->pos = Vec3(0, 0, (gear2->thickness + subgear->thickness) / 2 + 1);
-	subgear->gen_mesh();
-	gear2->attach(subgear);
-	machine->add_gear(subgear);
-	subgear->color = Vec3(0.8, 0.7, 0.5);
-
-	machine->add_motor(0, 1.0);
-
-	// shadows
-	init_shadow(2048);
-
-	if(!(sdr_shadow_notex = create_program_load("sdr/shadow.v.glsl", "sdr/shadow-notex.p.glsl"))) {
-		return false;
+	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));
+		}
 	}
-	set_uniform_int(sdr_shadow_notex, "shadowmap", 1);
-	set_uniform_int(sdr_shadow_notex, "envmap", 2);
 
-	float ambient[] = {0.1, 0.1, 0.1, 0.0};
-	glLightModelfv(GL_LIGHT_MODEL_AMBIENT, ambient);
+	if(!init(argc, argv)) {
+		SDL_Quit();
+		return 1;
+	}
+	app_reshape(win_width, win_height);
 
-	// env
-	envmap = texman.get_texture("data/stpeters_cross.jpg", TEX_CUBE);
+	while(!quit) {
+		SDL_Event ev;
 
-	skydome = new Mesh;
-	gen_sphere(skydome, 1.0, 16, 8);
-	skydome->flip_faces();
+		time_msec = SDL_GetTicks() - start_time;
+		while(SDL_PollEvent(&ev)) {
+			process_event(&ev);
+			if(quit) goto break_evloop;
+		}
 
-	if(!(sdr_skydome = create_program_load("sdr/skydome.v.glsl", "sdr/skydome.p.glsl"))) {
-		return false;
+		app_display();
 	}
-	glUseProgram(0);
+break_evloop:
 
-	start_time = glutGet(GLUT_ELAPSED_TIME);
-	return true;
+	app_cleanup();
+	SDL_Quit();
+	return 0;
 }
 
-static void cleanup()
+void app_swap_buffers()
 {
-	texman.clear();
-	delete machine;
+	SDL_GL_SwapWindow(win);
 }
 
-static void update(float dt)
+void app_quit()
 {
-	texman.update();
-
-	machine->update(dt);
-
-	if(sel_gear) {
-	}
-
-	hover_gear = pick_gear(prev_mx, prev_my);
+	quit = true;
 }
 
-static void set_light(int idx, const Vec3 &pos, const Vec3 &color)
+unsigned int app_get_modifiers()
 {
-	unsigned int lt = GL_LIGHT0 + idx;
-	float posv[] = { pos.x, pos.y, pos.z, 1 };
-	float colv[] = { color.x, color.y, color.z, 1 };
-
-	glEnable(lt);
-	glLightfv(lt, GL_POSITION, posv);
-	glLightfv(lt, GL_DIFFUSE, colv);
-	glLightfv(lt, GL_SPECULAR, colv);
+	return modkeys;
 }
 
-static void display()
+void app_resize(int x, int y)
 {
-	unsigned int msec = glutGet(GLUT_ELAPSED_TIME) - start_time;
-	float dt = (float)(msec - prev_msec) / 1000.0f;
-	prev_msec = msec;
-
-	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
-
-	view_matrix = Mat4::identity;
-	view_matrix.pre_translate(0, 0, -cam_dist);
-	view_matrix.pre_rotate(deg_to_rad(cam_phi), 1, 0, 0);
-	view_matrix.pre_rotate(deg_to_rad(cam_theta), 0, 1, 0);
-
-	glMatrixMode(GL_MODELVIEW);
-	glLoadMatrixf(view_matrix[0]);
-
-	static const Vec3 lpos[] = { Vec3(-50, 75, 100), Vec3(100, 0, 30), Vec3(-10, -10, 60) };
-	set_light(0, lpos[0], Vec3(1.0, 0.8, 0.7) * 0.8);
-	set_light(1, lpos[1], Vec3(0.6, 0.7, 1.0) * 0.6);
-	set_light(2, lpos[2], Vec3(0.8, 1.0, 0.8) * 0.3);
-
-	update(dt);
-
-	// shadowmap pass
-	begin_shadow_pass(lpos[0], Vec3(0, 0, 0), 0.2, 100, 150);
-	draw_scene();
-	end_shadow_pass();
-
-	// regular pass
-	const Mat4 &shadow_matrix = get_shadow_matrix();
-	Mat4 env_matrix = transpose(view_matrix.upper3x3());
-	set_uniform_matrix4(sdr_shadow_notex, "envmap_matrix", env_matrix[0]);
-
-	glActiveTexture(GL_TEXTURE1);
-	glBindTexture(GL_TEXTURE_2D, get_shadow_tex());
-	glMatrixMode(GL_TEXTURE);
-	glLoadMatrixf(shadow_matrix[0]);
-
-	glActiveTexture(GL_TEXTURE2);
-	glBindTexture(GL_TEXTURE_CUBE_MAP, envmap->get_id());
-
-	glActiveTexture(GL_TEXTURE0);
-	glMatrixMode(GL_MODELVIEW);
-
-	draw_scene();
-
-	glMatrixMode(GL_TEXTURE);
-	glLoadIdentity();
-	glMatrixMode(GL_MODELVIEW);
-
-
-	if(dbg_show_shadowmap) {
-		glMatrixMode(GL_PROJECTION);
-		glPushMatrix();
-		glLoadIdentity();
-		glMatrixMode(GL_MODELVIEW);
-		glPushMatrix();
-		glLoadIdentity();
-		glMatrixMode(GL_TEXTURE);
-		glLoadIdentity();
-
-		glPushAttrib(GL_ENABLE_BIT);
-		glUseProgram(0);
-		glBindTexture(GL_TEXTURE_2D, get_shadow_tex());
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_NONE);
-		glEnable(GL_TEXTURE_2D);
-		glDisable(GL_DEPTH_TEST);
-		glDisable(GL_LIGHTING);
-		glDisable(GL_BLEND);
-
-		glBegin(GL_QUADS);
-		glColor4f(1, 1, 1, 1);
-		glTexCoord2f(0, 0); glVertex2f(-0.95, -0.95);
-		glTexCoord2f(1, 0); glVertex2f(-0.5, -0.95);
-		glTexCoord2f(1, 1); glVertex2f(-0.5, -0.5);
-		glTexCoord2f(0, 1); glVertex2f(-0.95, -0.5);
-		glEnd();
-
-		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_COMPARE_MODE, GL_COMPARE_R_TO_TEXTURE);
-		glBindTexture(GL_TEXTURE_2D, 0);
-
-		glPopAttrib();
-
-		glMatrixMode(GL_PROJECTION);
-		glPopMatrix();
-		glMatrixMode(GL_MODELVIEW);
-		glPopMatrix();
-	}
-
-
-	glutSwapBuffers();
-	assert(glGetError() == GL_NO_ERROR);
+	SDL_SetWindowSize(win, x, y);
 }
 
-static void idle()
+void app_fullscreen(bool fs)
 {
-	glutPostRedisplay();
+	SDL_SetWindowFullscreen(win, fs ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
+	fullscreen = fs;
 }
 
-static void draw_scene()
+void app_toggle_fullscreen()
 {
-	// draw skydome
-	glDepthMask(0);
-
-	Mat4 rot_view = view_matrix.upper3x3();
-	glMatrixMode(GL_MODELVIEW);
-	glPushMatrix();
-	glLoadMatrixf(rot_view[0]);
-
-	bind_texture(envmap, 0);
-
-	glUseProgram(sdr_skydome);
-	skydome->draw();
-	glUseProgram(0);
-
-	bind_texture(0, 0);
-
-	glPopMatrix();
-	glDepthMask(1);
-
-	// draw mechanism
-	draw_gears();
+	app_fullscreen(!fullscreen);
 }
 
-static void draw_gears()
+bool app_is_fullscreen()
 {
-	/* world scale is in meters, gears are in millimeters, scale by 1/1000 */
-	glPushMatrix();
-	glScalef(0.001, 0.001, 0.001);
-
-	if(!shadow_pass && (sel_gear || hover_gear)) {
-		glPushAttrib(GL_ENABLE_BIT | GL_LINE_BIT | GL_POLYGON_BIT);
-
-		glDisable(GL_LIGHTING);
-		glFrontFace(GL_CW);
-		glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
-		glLineWidth(3.0);
-
-		if(sel_gear) {
-			glColor3f(0.2, 1.0, 0.3);
-			sel_gear->draw();
-		} else {
-			glColor3f(1.0, 0.75, 0.2);
-			hover_gear->draw();
-		}
+	return fullscreen;
+}
 
-		glPopAttrib();
+void app_grab_mouse(bool grab)
+{
+	if(grab) {
+		SDL_WarpMouseInWindow(win, win_width / 2, win_height / 2);
 	}
-
-	glUseProgram(shadow_pass ? 0 : sdr_shadow_notex);
-	machine->draw();
-	glUseProgram(0);
-
-	glPopMatrix();
+	//SDL_SetWindowGrab(win, grab ? SDL_TRUE : SDL_FALSE);
+	//SDL_ShowCursor(grab ? 1 : 0);
+	SDL_SetRelativeMouseMode(grab ? SDL_TRUE : SDL_FALSE);
+	mouse_grabbed = grab;
 }
 
-static void reshape(int x, int y)
+void app_toggle_grab_mouse()
 {
-	win_width = x;
-	win_height = y;
-
-	glViewport(0, 0, x, y);
-
-	glMatrixMode(GL_PROJECTION);
-	glLoadIdentity();
-	gluPerspective(50.0, (float)x / (float)y, 0.01, 50.0);
+	app_grab_mouse(!mouse_grabbed);
 }
 
-static void keyb(unsigned char key, int x, int y)
+bool app_is_mouse_grabbed()
 {
-	switch(key) {
-	case 27:
-		exit(0);
+	return mouse_grabbed;
+}
 
-	case 'w':
-		opt_gear_wireframe = !opt_gear_wireframe;
-		glutPostRedisplay();
-		break;
 
-	case 's':
-		dbg_show_shadowmap = !dbg_show_shadowmap;
-		glutPostRedisplay();
-		break;
+static bool init(int argc, char **argv)
+{
+	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;
+	int key;
 
-	prev_mx = x;
-	prev_my = y;
-	bnstate[bidx] = down;
-
-	if(bidx == 0) {
-		if(down) {
-			sel_gear = pick_gear(x, y);
-			sel_hit_pos = pick_hit.pos;
-		} else {
-			sel_gear = 0;
-		}
-	}
+	switch(ev->type) {
+	case SDL_QUIT:
+		quit = true;
+		break;
 
-	if(bidx == 3 || bidx == 4) {	/* wheel */
-		if(hover_gear) {
-			float dz = bidx == 4 ? 1 : -1;
-			hover_gear->set_position(hover_gear->get_position() + hover_gear->get_axis() * dz);
-			machine->invalidate_meshing();
+	case SDL_KEYDOWN:
+	case SDL_KEYUP:
+		proc_modkeys();
+		if((key = translate_keysym(ev->key.keysym.sym)) != -1) {
+			app_keyboard(key, ev->key.state == SDL_PRESSED);
 		}
-	}
-}
+		break;
 
-static void motion(int x, int y)
-{
-	int dx = x - prev_mx;
-	int dy = y - prev_my;
-	prev_mx = x;
-	prev_my = y;
+	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;
 
-	if(!dx && !dy) return;
+	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;
 
-	if(sel_gear) {
-		float speed = 0.5;
-		Vec3 offs = Vec3(dx * speed, -dy * speed, 0.0);
-		offs = sel_gear->get_dir_matrix() * offs;
+	case SDL_MOUSEWHEEL:
+		app_mouse_wheel(ev->wheel.y);
+		break;
 
-		sel_gear->set_position(sel_gear->get_position() + offs);
-		machine->invalidate_meshing();
+	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;
 
-	} else {
-		if(bnstate[0]) {
-			cam_theta += dx * 0.5;
-			cam_phi += dy * 0.5;
+	case SDL_CONTROLLERAXISMOTION:
+		app_gamepad_axis(ev->caxis.axis, ev->caxis.value / 32768.0f);
+		break;
 
-			if(cam_phi < -90) cam_phi = -90;
-			if(cam_phi > 90) cam_phi = 90;
-			glutPostRedisplay();
-		}
-		if(bnstate[2]) {
-			cam_dist += dy * 0.01;
-			if(cam_dist < 0.0) cam_dist = 0.0;
-			glutPostRedisplay();
-		}
+	case SDL_CONTROLLERBUTTONDOWN:
+	case SDL_CONTROLLERBUTTONUP:
+		app_gamepad_button(ev->cbutton.button, ev->type == SDL_CONTROLLERBUTTONDOWN);
+		break;
 	}
 }
 
-static void passive_motion(int x, int y)
+static void proc_modkeys()
 {
-	prev_mx = x;
-	prev_my = y;
+	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;
+	}
 }
 
-static Gear *pick_gear(int x, int y)
+static int translate_keysym(SDL_Keycode sym)
 {
-	double pt[3];
-	double viewmat[16], projmat[16];
-	int vp[4];
-	Ray ray;
-
-	y = win_height - y;
-
-	glGetDoublev(GL_MODELVIEW_MATRIX, viewmat);
-	glGetDoublev(GL_PROJECTION_MATRIX, projmat);
-	glGetIntegerv(GL_VIEWPORT, vp);
-
-	gluUnProject(x, y, 0, viewmat, projmat, vp, pt, pt + 1, pt + 2);
-	ray.origin = Vec3(pt[0], pt[1], pt[2]) * 1000.0f;
-
-	gluUnProject(x, y, 1, viewmat, projmat, vp, pt, pt + 1, pt + 2);
-	ray.dir = Vec3(pt[0], pt[1], pt[2]) * 1000.0f - ray.origin;
+	switch(sym) {
+	case SDLK_RETURN:
+		return '\n';
+	case SDLK_DELETE:
+		return KEY_DEL;
+	case SDLK_LEFT:
+		return KEY_LEFT;
+	case SDLK_RIGHT:
+		return KEY_RIGHT;
+	case SDLK_UP:
+		return KEY_UP;
+	case SDLK_DOWN:
+		return KEY_DOWN;
+	case SDLK_PAGEUP:
+		return KEY_PGUP;
+	case SDLK_PAGEDOWN:
+		return KEY_PGDOWN;
+	case SDLK_HOME:
+		return KEY_HOME;
+	case SDLK_END:
+		return KEY_END;
+	default:
+		break;
+	}
 
-	return machine->intersect_gear(ray, &pick_hit);
+	if(sym < 127) {
+		return sym;
+	}
+	if(sym >= SDLK_F1 && sym <= SDLK_F12) {
+		return KEY_F1 + sym - SDLK_F1;
+	}
+	return -1;
 }