super basic UI constraint and alignment system with a super basic "game framework"

shaders/font.frag

@@ -0,0 +1,11 @@
+#version 330 core
+in vec2 TexCoords;
+out vec4 FragColor;
+
+uniform sampler2D text;
+uniform vec4 textColor;
+
+void main() {
+  vec4 sampled = vec4(1.0, 1.0, 1.0, texture(text, TexCoords).r);
+  FragColor = textColor * sampled;
+}