From ddd234ea1ff2924e587372aa12c4d5cda99a0ce0 Mon Sep 17 00:00:00 2001
From: Olivia Mackintosh <livvy@base.nu>
Date: Tue, 21 Apr 2020 18:33:32 +0100
Subject: Initial commit

---
 src/tiny.c | 216 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 216 insertions(+)
 create mode 100644 src/tiny.c

(limited to 'src/tiny.c')

diff --git a/src/tiny.c b/src/tiny.c
new file mode 100644
index 0000000..11b7e65
--- /dev/null
+++ b/src/tiny.c
@@ -0,0 +1,216 @@
+#define GL_GLEXT_PROTOTYPES why
+//#include<stdio.h>
+//#include<stdbool.h>
+//#include<stdlib.h>
+//#include<stdint.h>
+
+#include <glib.h>
+#include <gtk/gtk.h>
+#include <gdk/gdkkeysyms.h>
+#include <GL/gl.h>
+#include <GL/glx.h>
+#include <GL/glu.h>
+#include <GL/glext.h>
+#include "shader.h"
+#include "sync.h"
+static char* vshader = "#version 450\nvec2 y=vec2(1.,-1);vec4 x[4]={y.yyxx,y.xyxx,y.yxxx,y.xxxx};void main(){gl_Position=x[gl_VertexID];}";
+
+#define CANVAS_WIDTH 1920
+#define CANVAS_HEIGHT 1080
+//#define DEBUG
+
+GLuint vao;
+GLuint p;
+
+// <sync stuff
+int curtime_ms = 0;
+int is_playing = 1;
+int rps = 24;
+static struct sync_device *device;
+#if !defined(SYNC_PLAYER)
+static struct sync_cb cb;
+#endif
+static const char* s_trackNames[] = {"cam_x", "cam_y", "cam_z"};
+static const struct sync_track* s_tracks[3];
+
+static int row_to_ms_round(int row, float rps){
+	const float newTime = (float) row / rps;
+	return (floor(newTime * 1000.0f + 0.5f));
+}
+static float ms_to_row_f(int time_ms, float rps) {
+	return rps * ((float) time_ms) * 1.0f/1000.0f;
+}
+static int ms_to_row_round(int time_ms, float rps){
+	const float r = ms_to_row_f(time_ms, rps);
+	return (int) (floor(r + 0.5f));
+}
+#if !defined(SYNC_PLAYER)
+static void xpause(void* data, int flag)
+{
+	(void)data;
+	if (flag)
+		is_playing = 0;
+	else
+		is_playing = 1;
+}
+static void xset_row(void* data, int row)
+{
+	int newtime_ms = row_to_ms_round(row, rps);
+	curtime_ms = newtime_ms;
+	(void)data;
+}
+static int xis_playing(void* data)
+{
+	(void)data;
+	return is_playing;
+}
+#endif
+static int rocket_update(){
+	if(is_playing) curtime_ms += 16;
+	#if !defined( SYNC_PLAYER )
+	int row = ms_to_row_round(curtime_ms, rps);
+	if (sync_update(device,row,&cb,0))
+		sync_tcp_connect(device, "localhost", SYNC_DEFAULT_PORT);
+	#endif
+	return -1;
+}
+// sync stuff>
+
+static gboolean
+on_render (GtkGLArea *glarea, GdkGLContext *context)
+{
+	glUseProgram(p);
+	float row_f = ms_to_row_f(curtime_ms, rps);
+	glProgramUniform1f(p, 0, curtime_ms/1000.0f);
+	glProgramUniform1f(p, 1, sync_get_val(s_tracks[0], row_f));
+	glProgramUniform1f(p, 2, sync_get_val(s_tracks[1], row_f));
+	glProgramUniform1f(p, 3, sync_get_val(s_tracks[2], row_f));
+	glBindVertexArray(vao);
+	glVertexAttrib1f(0, 0);
+	glDrawArrays(GL_TRIANGLE_STRIP, 0, 4);
+	rocket_update();
+	return TRUE;
+}
+
+static void on_realize(GtkGLArea *glarea)
+{
+	gtk_gl_area_make_current(glarea);
+	
+	device = sync_create_device("data/sync");
+	for (int i = 0; i < 3; ++i)
+		s_tracks[i] = sync_get_track(device, s_trackNames[i]);
+	#if !defined( SYNC_PLAYER )
+	sync_tcp_connect(device, "localhost", SYNC_DEFAULT_PORT);
+	cb.is_playing = xis_playing;
+	cb.pause = xpause;
+	cb.set_row = xset_row;
+	#endif
+
+	// compile shader
+	GLuint f = glCreateShader(GL_FRAGMENT_SHADER);
+	glShaderSource(f, 1, &shader_frag, NULL);
+	glCompileShader(f);
+
+	#ifdef DEBUG
+		GLint isCompiled = 0;
+		glGetShaderiv(f, GL_COMPILE_STATUS, &isCompiled);
+		if(isCompiled == GL_FALSE) {
+			GLint maxLength = 0;
+			glGetShaderiv(f, GL_INFO_LOG_LENGTH, &maxLength);
+
+			char* error = malloc(maxLength);
+			glGetShaderInfoLog(f, maxLength, &maxLength, error);
+			printf("%s\n", error);
+
+			exit(-10);
+		}
+	#endif
+
+	GLuint v = glCreateShader(GL_VERTEX_SHADER);
+	glShaderSource(v, 1, &vshader, NULL);
+	glCompileShader(v);
+
+	#ifdef DEBUG
+		GLint isCompiled2 = 0;
+		glGetShaderiv(v, GL_COMPILE_STATUS, &isCompiled2);
+		if(isCompiled2 == GL_FALSE) {
+			GLint maxLength = 0;
+			glGetShaderiv(v, GL_INFO_LOG_LENGTH, &maxLength);
+
+			char* error = malloc(maxLength);
+			glGetShaderInfoLog(v, maxLength, &maxLength, error);
+			printf("%s\n", error);
+
+			exit(-10);
+		}
+	#endif
+
+	// link shader
+	p = glCreateProgram();
+	glAttachShader(p,v);
+	glAttachShader(p,f);
+	glLinkProgram(p);
+
+	#ifdef DEBUG
+		GLint isLinked = 0;
+		glGetProgramiv(p, GL_LINK_STATUS, (int *)&isLinked);
+		if (isLinked == GL_FALSE) {
+			GLint maxLength = 0;
+			glGetProgramiv(p, GL_INFO_LOG_LENGTH, &maxLength);
+
+			char* error = malloc(maxLength);
+			glGetProgramInfoLog(p, maxLength, &maxLength,error);
+			printf("%s\n", error);
+
+			exit(-10);
+		}
+	#endif
+
+	glProgramUniform2f(p, 0, CANVAS_WIDTH, CANVAS_HEIGHT);
+	glGenVertexArrays(1, &vao);
+
+	// if you want to continuously render the shader once per frame
+	GdkGLContext *context = gtk_gl_area_get_context(glarea);
+	GdkWindow *glwindow = gdk_gl_context_get_window(context);
+	GdkFrameClock *frame_clock = gdk_window_get_frame_clock(glwindow);
+
+	// Connect update signal:
+	g_signal_connect_swapped(frame_clock, "update", G_CALLBACK(gtk_gl_area_queue_render), glarea);
+
+	// Start updating:
+	gdk_frame_clock_begin_updating(frame_clock);
+}
+
+void _start() {
+	asm volatile("sub $8, %rsp\n");
+
+	typedef void (*voidWithOneParam)(int*);
+	voidWithOneParam gtk_init_one_param = (voidWithOneParam)gtk_init;
+	(*gtk_init_one_param)(NULL);
+
+	GtkWidget *win = gtk_window_new (GTK_WINDOW_TOPLEVEL);
+	GtkWidget *glarea = gtk_gl_area_new();
+	gtk_container_add(GTK_CONTAINER(win), glarea);
+
+	g_signal_connect(win, "destroy", gtk_main_quit, NULL);
+	g_signal_connect(glarea, "realize", G_CALLBACK(on_realize), NULL);
+	g_signal_connect(glarea, "render", G_CALLBACK(on_render), NULL);
+
+	gtk_widget_show_all (win);
+
+	//gtk_window_fullscreen((GtkWindow*)win);
+	GdkWindow* window = gtk_widget_get_window(win);
+	GdkCursor* Cursor = gdk_cursor_new(GDK_BLANK_CURSOR);
+	gdk_window_set_cursor(window, Cursor);
+
+	gtk_main();
+
+	asm volatile(".intel_syntax noprefix");
+	asm volatile("push 231"); //exit_group
+	asm volatile("pop rax");
+	// asm volatile("xor edi, edi");
+	asm volatile("syscall");
+	asm volatile(".att_syntax prefix");
+	__builtin_unreachable();
+	// return 0;
+}
-- 
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