why doesnt it work

kubi/shaders/gui/progressbar.vert

@@ -2,11 +2,20 @@
 
 in vec2 position;
 out vec2 uv;
-uniform vec2 ui_view;
+uniform mat4 ui_view;
-uniform vec2 element_position;
+uniform mat3 transform;
-uniform vec2 element_size;
+
+//not sure if mat4(i) does the same thing
+mat4 extend(mat3 i) {
+  mat4 o;
+  o[0] = vec4(i[0].xyz, 0);
+  o[1] = vec4(i[1].xyz, 0);
+  o[2] = vec4(i[2].xyz, 0);
+  o[3] = vec4(0, 0, 0, 1);
+  return o;
+}
 
 void main() {
   uv = position;
-  gl_Position = vec4(ui_view * (element_position + (position * element_size)), 0.0, 1.0);
+  gl_Position = ui_view * extend(transform) * vec4(position, 0., 1.);
 }

kubi/src/gui.rs

@@ -1,6 +1,6 @@
 use shipyard::{Component, Unique, Workload, IntoWorkload, AllStoragesView, AllStoragesViewMut};
-use glam::{Vec2, Vec4, vec2};
+use glam::{Vec2, Vec4, Mat3, vec2, Mat4};
-use crate::color::color_hex;
+use crate::{color::color_hex, transform::Transform2d};
 
 pub mod text_widget;
 pub mod progressbar;
@@ -9,26 +9,11 @@ use progressbar::{render_progressbars, ProgressbarComponent};
 
 //TODO compute gui scale on window resize
 #[derive(Unique, Clone, Copy, Debug)]
-pub struct GuiViewScale(pub Vec2);
+pub struct GuiView(pub Mat4);
 
 #[derive(Component, Clone, Copy, Debug, Default)]
 pub struct GuiComponent;
 
-#[derive(Component, Clone, Copy, Debug)]
-#[track(All)]
-pub struct GuiTransform {
-  pub position: Vec2,
-  pub scale: Vec2,
-}
-impl Default for GuiTransform {
-  fn default() -> Self {
-    Self {
-      position: Vec2::ZERO,
-      scale: Vec2::ONE,
-    }
-  }
-}
-
 #[derive(Component, Clone, Copy, Debug)]
 pub struct PrimaryColor(pub Vec4);
 impl Default for PrimaryColor {
@@ -54,7 +39,7 @@ pub fn render_gui() -> Workload {
 pub fn init_gui(
   storages: AllStoragesView,
 ) {
-  storages.add_unique(GuiViewScale(Vec2::ONE));
+  storages.add_unique(GuiView(Mat4::orthographic_rh_gl(0.0, 1.0, 1.0, 0.0, 0.0, 1.0)));
 }
 
 pub fn gui_testing(
@@ -62,10 +47,11 @@ pub fn gui_testing(
 ) {
   storages.add_entity((
     GuiComponent,
-    GuiTransform {
+    Transform2d(Mat3::from_scale_angle_translation(
-      position: Vec2::ZERO,
+      vec2(0.25, 0.05), 
-      scale: vec2(1.0, 0.05),
+      0.,
-    },
+      vec2(0.5, 0.)
+    )),
     ProgressbarComponent {
       progress: 0.5
     },

kubi/src/gui/progressbar.rs

@@ -5,9 +5,9 @@ use crate::{
   rendering::{
     RenderTarget, 
     primitives::rect::RectPrimitive
-  },
+  }, transform::Transform2d,
 };
-use super::{GuiComponent, GuiTransform, PrimaryColor, SecondaryColor, GuiViewScale};
+use super::{GuiComponent, PrimaryColor, SecondaryColor, GuiView};
 
 #[derive(Component, Debug, Clone, Copy, Default)]
 pub struct ProgressbarComponent {
@@ -18,9 +18,9 @@ pub fn render_progressbars(
   mut target: NonSendSync<UniqueViewMut<RenderTarget>>,
   rect: NonSendSync<UniqueView<RectPrimitive>>,
   program: NonSendSync<UniqueView<ProgressbarShaderPrefab>>,
-  view: UniqueView<GuiViewScale>,
+  view: UniqueView<GuiView>,
   components: View<GuiComponent>,
-  transforms: View<GuiTransform>,
+  transforms: View<Transform2d>,
   progressbars: View<ProgressbarComponent>,
   primary: View<PrimaryColor>,
   secondary: View<SecondaryColor>,
@@ -34,9 +34,8 @@ pub fn render_progressbars(
       &rect.1,
       &program.0,
       &uniform! {
-        element_position: transform.position.to_array(),
+        transform: transform.0.to_cols_array_2d(),
-        element_size: transform.scale.to_array(), 
+        ui_view: view.0.to_cols_array_2d(),
-        ui_view: view.0.to_array(),
         progress: progress.progress,
         color: pri.unwrap_or_default().0.to_array(),
         bg_color: sec.unwrap_or_default().0.to_array(),

kubi/src/transform.rs

@@ -1,6 +1,10 @@
 use shipyard::Component;
-use glam::{Mat4, Vec2};
+use glam::{Mat4, Mat3};
 
 #[derive(Component, Clone, Copy, Debug, Default)]
 #[track(All)]
 pub struct Transform(pub Mat4);
+
+#[derive(Component, Clone, Copy, Debug, Default)]
+#[track(All)]
+pub struct Transform2d(pub Mat3);