getting the canvasframe set up for text

resources/shaders/simple_text.vert

@@ -7,6 +7,11 @@ layout(location = 0) in vec3 v_position;
 layout(location = 1) in vec4 color;
 layout(location = 2) in vec2 ti_position;
 
+layout(location = 3) in vec2 screen_position;
+layout(location = 4) in vec2 atlas_position;
+layout(location = 5) in vec2 atlas_size;
+layout(location = 6 in float scale;
+
 // These are made up in the shader themselves
 layout(location = 0) out vec2 tex_coords;