1 files changed, 45 insertions, 3 deletions

diff --git a/source/dw/app/lop.rs b/source/dw/app/lop.rs
index 928ddf1..16f6e5a 100644
--- a/source/dw/app/lop.rs
+++ b/source/dw/app/lop.rs
@@ -1,17 +1,45 @@
 // Copyright 2023 Gabriel Jensen.
 
-use crate::dw::app::{App,GOTINT};
+use crate::dw::app::{App, GOTINT};
 use crate::dw::app::Gfx;
 
-//extern crate gl;
+extern crate gl;
 extern crate glfw;
 
+use gl::{ARRAY_BUFFER, BindBuffer, BufferData, BindVertexArray, BufferSubData, Clear, ClearColor, COLOR_BUFFER_BIT, DrawArrays, EnableVertexAttribArray, FALSE, FLOAT, GenBuffers, GenVertexArrays, STREAM_DRAW, TRIANGLES, UseProgram, VertexAttribPointer};
+use gl::types::{GLfloat, GLsizeiptr, GLuint};
+use glfw::Context;
+use std::ffi::c_void;
+use std::mem::{size_of, size_of_val};
+use std::ptr::{addr_of, null};
 use std::sync::atomic::Ordering;
 
 impl App {
-	pub fn lop(&mut self,gfx: &mut Gfx) -> i8 {
+	pub fn lop(&mut self, gfx: &mut Gfx) -> i8 {
 		eprintln!("entering main loop");
 
+		let vtx: [GLfloat; 0x9] = [
+			-1.0, 1.0, 0.0,
+			 1.0, 1.0, 0.0,
+			 0.0, 0.0, 0.0,
+		];
+
+		let mut vao: GLuint = 0x0;
+		let mut vbo: GLuint = 0x0;
+
+		unsafe {
+			GenVertexArrays(0x1,&mut vao);
+			GenBuffers(0x1,&mut vbo);
+
+			BindVertexArray(vao);
+
+			BindBuffer(ARRAY_BUFFER,vbo);
+			BufferData(ARRAY_BUFFER,size_of_val(& vtx) as GLsizeiptr, addr_of!(vtx) as *const c_void, STREAM_DRAW);
+
+			VertexAttribPointer(0x0, 0x3, FLOAT, FALSE, (0x3*size_of::<GLfloat>()) as i32, null::<c_void>());
+			EnableVertexAttribArray(0x0);
+		}
+
 		while !gfx.win.should_close() {
 			unsafe {
 				if GOTINT.load(Ordering::Relaxed) {
@@ -21,6 +49,20 @@ impl App {
 			}
 
 			gfx.glfw.poll_events();
+
+			unsafe {
+				ClearColor(0.25, 0.0, 0.0, 1.0);
+				Clear(COLOR_BUFFER_BIT);
+
+				BindBuffer(ARRAY_BUFFER, vbo);
+				BufferSubData(ARRAY_BUFFER, 0x0, size_of_val(& vtx) as GLsizeiptr, addr_of!(vtx) as *const c_void);
+
+				UseProgram(gfx.shdprg);
+				BindVertexArray(vao);
+				DrawArrays(TRIANGLES, 0x0, 0x3*0x1);
+			}
+
+			gfx.win.swap_buffers();
 		}
 
 		return -0x45;