X-Git-Url: http://git.mutantstargoat.com?a=blobdiff_plain;f=src%2Fmain.cc;h=aeb57a64e2b572cf667323e822792361d1747b9e;hb=HEAD;hp=4d77441ffdb89e5a103a4a4259dffb519a3f32b9;hpb=369d75c73bf926a6dbcf4d740c8664bbb401602a;p=demo

diff --git a/src/main.cc b/src/main.cc
index 4d77441..aeb57a6 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -1,177 +1,411 @@
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <vector>
 
+#include <gmath/gmath.h>
+
+#include "gfxapi.h"
+#include "global.h"
+
 /* TODO: fix those */
 #include "camera.h"
 #include "mesh.h"
+#include "morph_renderer.h"
 #include "object.h"
 #include "scene.h"
+#include "terrain.h"
+#include "texture.h"
 
 #include "opengl/opengl.h"
 #include "vulkan/vk.h"
 
 /* static functions */
 
-static bool init();
+static bool init(Gfx_API api);
 static void cleanup();
 static void display();
+static bool gen_poisson(std::vector<Vec2> &points, float min_dist, float radius);
 
 /* glfw callbacks */
-static void key_clbk(GLFWwindow *win, int key, int scancode, int action, int mods);
-static void motion_clbk(GLFWwindow *win, double x, double y);
-static void mouse_clbk(GLFWwindow *win, int button, int action, int mods);
+
+static void clbk_key(GLFWwindow *win, int key, int scancode, int action, int mods);
+static void clbk_motion(GLFWwindow *win, double x, double y);
+static void clbk_mouse(GLFWwindow *win, int button, int action, int mods);
+static void clbk_reshape(GLFWwindow *win, int width, int height);
 
 /* global variables */
-bool use_vulkan;
+
+Mat4 mprojection;
 
 GLFWwindow *win;
 int win_w = 800;
 int win_h = 600;
 
-OrbitCamera *camera;
+ShaderManager *sdr_man;
+
+double time_sec;
 
 /* variables */
-static float phi = 25;
-static float theta = 0;
-static float dist = 4;
+static bool move_camera;
 
-// TODO: remove just for test:
-static Scene scene;
+static float cam_phi = 25;
+static float cam_theta = 0;
+static float cam_dist = 16;
+static Vec3 cam_pos;
+
+static float aspect;
+static OrbitCamera *camera;
+
+static float fog_density;
+
+static int num_cows = 1;
+static float cow_gap = 4;
+static Scene *cow_scene;
+static MorphRenderer *cow_rend;
+
+static Terrain terrain;
+static TerrainParams p;
+static Texture *skybox_tex;
+static Texture *irradiance_tex;
+static Texture *terrain_tex;
+static Texture *dirt_tex;
+static Material terrain_mat;
+static Renderer *terrain_rend;
+
+/* *** */
 
 int main(int argc, char **argv)
 {
-	for(int i=0; i<argc; ++i) {
+	Gfx_API api;
+
+	for(int i=1; i<argc; i++) {
 		if(strcmp(argv[i], "-opengl") == 0) {
-			use_vulkan = false;
+			api = GFX_GL;
 			printf("Backend: OpenGL.\n");
 		}
 		else if(strcmp(argv[i], "-vulkan") == 0) {
-			use_vulkan = true;
+			api = GFX_VK;
 			printf("Backend: Vulkan.\n");
 		}
 		else {
+			api = GFX_GL;
 			printf("No backend specified. Using OpenGL.\n");
 		}
 	}
 
-	if(!init()) {
+	if(!init(api)) {
 		fprintf(stderr, "Failed to initialize program.\n");
 		return 1;
 	}
 
-	glfwSetKeyCallback(win, key_clbk);
-	glfwSetCursorPosCallback(win, motion_clbk);
-	glfwSetMouseButtonCallback(win, mouse_clbk);
+	//TODO
+	//return 0;
+
+	glfwSetKeyCallback(win, clbk_key);
+	glfwSetCursorPosCallback(win, clbk_motion);
+	glfwSetMouseButtonCallback(win, clbk_mouse);
+	glfwSetWindowSizeCallback(win, clbk_reshape);
+
+	glfwGetWindowSize(win, &win_w, &win_h);
+	clbk_reshape(win, win_w, win_h);
 
 	while(!glfwWindowShouldClose(win)) {
 		display();
 
-		glfwSwapBuffers(win);
+		gfx_swapbuffers();
 		glfwPollEvents();
 	}
 
-	atexit(cleanup);
+	cleanup();
 	return 0;
 }
 
-static bool init()
+static bool init(Gfx_API api)
 {
-	/* TODO */
-	/*
-		TODO changes:
-		1- create cam
-		2- scene
-		3- renderers
-	*/
-	if(use_vulkan) {
-		if(!init_vulkan())
-			return false;
+	if(!gfx_init(api))
+		return false;
+
+	fog_density = 0.0037;
+
+	sdr_man = new ShaderManager;
+
+	camera = new OrbitCamera;
+
+	terrain_tex = gfx_create_texture();
+	if(!terrain_tex->load("data/grass.jpeg")) {
+		fprintf(stderr, "Failed to load ground grass texture.\n");
+		return false;
 	}
-	else {
-		if(!init_opengl())
-			return false;
+
+	dirt_tex = gfx_create_texture();
+	if(!dirt_tex->load("data/dirt.jpg")) {
+		fprintf(stderr, "Failed to load ground dirt texture.\n");
+		return false;
 	}
 
-	camera = new OrbitCamera;
-	camera->set_orbit_params(phi, theta, dist);
+	Image ter_hmap;
+	if(!ter_hmap.load("data/terhmap.png")) {
+		fprintf(stderr, "Failed to load terrain heightmap.\n");
+		return false;
+	}
+
+	p.xsz = 20;//200;
+	p.ysz = 20; //200;
+	p.max_height = 3;//30;
+	p.xtiles = 4;//40;
+	p.ytiles = 4;//40;
+	p.tile_usub = 10;
+	p.tile_vsub = 10;
+	p.num_octaves = 3;
+	p.noise_freq = 5;
+	p.coarse_heightmap = ter_hmap;
+
+	terrain.init();
+	terrain.generate(p);
+
+	terrain_mat.diffuse = Vec3(1, 1, 1);
+	terrain_mat.specular = Vec3(0, 0, 0);
+	terrain_mat.shininess = 40;
+	terrain_mat.dtex = terrain_tex;
+	terrain_mat.name = "tt";
+
+	terrain.material = terrain_mat;
 
-	if(!scene.load("data/spot/spot_control_mesh.obj")) {
-		fprintf(stderr, "Failed to load scene.\n");
+	terrain_rend = new Renderer;
+	terrain_rend->camera = camera;
+	terrain_rend->scene = terrain.get_visible(camera);
+
+	skybox_tex = gfx_create_texture();
+	skybox_tex->load("data/cubemap/cubemap.hdr");
+	terrain_rend->set_sky_tex(skybox_tex);
+
+	irradiance_tex = gfx_create_texture();
+	irradiance_tex->load("data/cubemap/irradiance.hdr");
+	terrain_rend->set_diffuse_sky_tex(irradiance_tex);
+
+	if(!terrain_rend->create()) {
+		fprintf(stderr, "terrain fail\n");
 		return false;
 	}
+	terrain_rend->fog_density = fog_density;
 
-	for(size_t i=0; i<scene.objects.size(); ++i) {
-		printf("object: %d\n", (int)i);
-		printf("mesh: %s\n", scene.objects[i]->mesh->name.c_str());
-		printf("material: %s\n", scene.objects[i]->material->name.c_str());
-		printf("transform:\n");
-		scene.objects[i]->transform.print();
+	cow_scene = new Scene;
+	if(!cow_scene->load("data/spot/spot.obj")) {
+		fprintf(stderr, "Failed to load scene: spot.obj.\n");
+		return false;
 	}
+
+	cow_rend = new MorphRenderer;
+	cow_rend->camera = camera;
+	cow_rend->scene = cow_scene;
+	cow_rend->fog_density = fog_density;
+
+	if(!cow_rend->create()) {
+		fprintf(stderr, "Failed to create renderer for cows.\n");
+		return false;
+	}
+
+	/* create cow objects */
+	Object *cow0 = cow_scene->objects[0];
+	cow0->transform.rotation_y(M_PI);
+	cow_scene->objects.clear();
+
+	float disk_radius = std::min(p.xsz, p.ysz) / 2.0 * 0.65;
+	std::vector<Vec2> cow_pos;
+
+	for(int i=0; i<num_cows; i++) {
+		Object *cow = new Object;
+		*cow = *cow0;
+
+		if(!gen_poisson(cow_pos, cow_gap, disk_radius))
+			goto cowgen_end;
+		Vec2 pos = cow_pos.back();
+		float y = terrain.get_height(Vec3(pos.x, 1, pos.y));
+
+		cow->transform.translate(pos.x, y, pos.y);
+		cow_scene->objects.push_back(cow);
+	}
+
+cowgen_end:
+	printf("generated: %d cows from %d\n", (int)cow_pos.size(), num_cows);
+	delete cow0;
 	return true;
 }
 
 static void cleanup()
 {
-	if(use_vulkan) {
-		cleanup_vulkan();
-	}
-	else {
-		cleanup_opengl();
-	}
-
+	delete sdr_man;
 	delete camera;
+
+	delete cow_scene;
+	delete cow_rend;
+
+	delete skybox_tex;
+	delete irradiance_tex;
+	delete terrain_tex;
+	delete terrain_rend;
+
+	gfx_cleanup();
 }
 
-static void key_clbk(GLFWwindow *win, int key, int scancode, int action, int mods)
+static float cow_speed = 10;
+static Vec3 cow_pos;
+static bool keystate[256];
+
+static void clbk_key(GLFWwindow *win, int key, int scancode, int action, int mods)
 {
-	if(key == GLFW_KEY_ESCAPE && action == GLFW_PRESS) {
-		glfwSetWindowShouldClose(win, GLFW_TRUE);
+	if(action == GLFW_REPEAT) return;
+
+	if(action == GLFW_PRESS) {
+		switch(key) {
+		case GLFW_KEY_ESCAPE:
+			glfwSetWindowShouldClose(win, GLFW_TRUE);
+			return;
+
+		case ' ':
+			move_camera = !move_camera;
+			break;
+
+		// case 'F':
+		//	fog_density = fog_density < 1 - 0.0009 ? fog_density + 0.0001 : 1;
+		//	break;
+
+		// case 'U':
+		//	fog_density = fog_density > 0.0001 ? fog_density - 0.0001 : 0;
+		//	break;
+
+		case 'P':
+			gfx_wireframe(true);
+			break;
+
+		case 'F':
+			gfx_wireframe(false);
+			break;
+
+		default:
+			break;
+		}
+	}
+
+	if(key < 256) {
+		keystate[key] = action == GLFW_PRESS;
 	}
 }
 
 static double prev_x, prev_y;
-static int button;
+static bool button[8];
 
-static void motion_clbk(GLFWwindow *win, double x, double y)
+static void clbk_motion(GLFWwindow *win, double x, double y)
 {
-	switch(button) {
-	case GLFW_MOUSE_BUTTON_LEFT:
-		theta += x - prev_x;
-		phi += y - prev_y;
-
-		if(phi < -90)
-			phi = -90;
-		if(phi > 90)
-			phi = 90;
-
-		break;
-
-	case GLFW_MOUSE_BUTTON_RIGHT:
-		dist *= (y - prev_y) * 0.01 + 1;
-		if(dist < 0.0) {
-			dist = 0.0;
-		}
-		break;
-	}
+	double dx = x - prev_x;
+	double dy = y - prev_y;
 
 	prev_x = x;
 	prev_y = y;
+
+	if(button[0]) {
+		cam_theta += dx * 0.5;
+		cam_phi += dy * 0.5;
+
+		if(cam_phi < 0)
+			cam_phi = 0;
+		if(cam_phi > 90)
+			cam_phi = 90;
+	}
+
+	if(button[1]) {
+		cam_dist += dy * 0.1;
+		if(cam_dist < 0.0) {
+			cam_dist = 0.0;
+		}
+	}
 }
 
-static void mouse_clbk(GLFWwindow *win, int bn, int action, int mods)
+static void clbk_mouse(GLFWwindow *win, int bn, int action, int mods)
 {
-	button = bn;
+	button[bn] = action == GLFW_PRESS;
 	glfwGetCursorPos(win, &prev_x, &prev_y);
 }
 
+static void clbk_reshape(GLFWwindow *win, int width, int height)
+{
+	gfx_reshape(width, height);
+	gfx_viewport(0, 0, width, height);
+	aspect = (float)width / (float)height;
+	mprojection = calc_projection_matrix(45, aspect, 0.5, 1000.0);
+
+	win_h = height;
+	win_w = width;
+}
+
+static void update(float dt)
+{
+	Vec3 dir;
+
+	if(keystate['D'])
+		dir.x += cow_speed * dt;
+	if(keystate['A'])
+		dir.x -= cow_speed * dt;
+	if(keystate['W'])
+		dir.z -= cow_speed * dt;
+	if(keystate['S'])
+		dir.z += cow_speed * dt;
+
+	Vec3 *pos = move_camera ? &cam_pos : &cow_pos;
+	float theta = cam_theta / 180.0 * M_PI;
+	pos->x += dir.x * cos(theta) - dir.z * sin(theta);
+	pos->z += dir.x * sin(theta) + dir.z * cos(theta);
+}
+
 static void display()
 {
-	if(use_vulkan) {
-		display_vulkan();
-	}
-	else {
-		display_opengl();
+	static float prev_tsec;
+	time_sec = glfwGetTime();
+	float dt = time_sec - prev_tsec;
+	prev_tsec = time_sec;
+
+	update(dt);
+
+	cam_pos.y = terrain.get_height(cam_pos) + 0.5;
+	camera->set_orbit_params(cam_theta, cam_phi, cam_dist);
+	camera->set_position(cam_pos.x, cam_pos.y, cam_pos.z);
+
+	gfx_begin_drawing();
+
+	gfx_clear(0.1, 0.1, 0.1);
+
+	terrain_rend->draw();
+	cow_rend->draw();
+
+	gfx_end_drawing();
+}
+
+static bool gen_poisson(std::vector<Vec2> &points, float min_dist, float radius)
+{
+	/* poisson radius */
+	for(int i = 0; i < 1000; i++) {
+		float angle = (float)rand() / (float)RAND_MAX * 2 * M_PI;
+		float r = sqrt((float)rand() / (float)RAND_MAX) * radius;
+
+		Vec2 p;
+		p.x = cos(angle) * r;
+		p.y = sin(angle) * r;
+
+		bool valid = true;
+		for(size_t j=0; j<points.size(); j++) {
+			if(length_sq(points[j] - p) < min_dist * min_dist) {
+				valid = false;
+				break;
+			}
+		}
+		if(valid) {
+			points.push_back(p);
+			return true;
+		}
 	}
-}
\ No newline at end of file
+	return false;
+}