first commit

vshader.glsl

@@ -0,0 +1,21 @@
+#version 420 core
+
+out vec2 TexPos;
+
+layout (location = 0) in vec2 aPos;
+layout (location = 1) in vec2 texPos;
+
+uniform vec2 camPos;
+uniform int zoom;
+
+float invLerp( float a, float b, float v ){
+	return (v - a) / (b - a);
+}
+
+void main(){
+	gl_Position = vec4(
+					(aPos + vec2(camPos.x, -camPos.y) * 2) * (invLerp(-10, 10, zoom) * 2),
+ 					0.0,
+					1.0) ;
+	TexPos = texPos;
+}