added underdeveloped but working image support (no freeing or samplers)

src/render/primitive.rs

@@ -35,9 +35,9 @@ macro_rules! primitives {
 
         impl PrimitiveBuffers {
             pub const LEN: usize = primitives!(@count $($name)*);
-            pub fn buffers(&self) -> [&Buffer; Self::LEN] {
+            pub fn buffers(&self) -> [(u32, &Buffer); Self::LEN] {
                 [
-                    $(&self.$name.buffer)*
+                    $((<$ty>::BINDING, &self.$name.buffer),)*
                 ]
             }
             pub fn new(device: &Device) -> Self {
@@ -46,7 +46,7 @@ macro_rules! primitives {
                         device,
                         BufferUsages::STORAGE | BufferUsages::COPY_DST,
                         stringify!($name),
-                    ))*
+                    ),)*
                 }
             }
         }
@@ -62,14 +62,10 @@ macro_rules! primitives {
             }
         )*
     };
-    (@count $t1:tt, $($t:tt),+) => { 1 + gen!(@count $($t),+) };
+    (@count $t1:tt $($t:tt)+) => { 1 + primitives!(@count $($t),+) };
     (@count $t:tt) => { 1 };
 }
 
-primitives!(
-    rects: RoundedRectData => 0,
-);
-
 impl Primitives {
     pub fn write<P: Primitive>(&mut self, data: P, region: UiRegion) {
         let vec = P::vec(&mut self.data);
@@ -83,11 +79,23 @@ impl Primitives {
     }
 }
 
+primitives!(
+    rects: RectPrimitive => 0,
+    textures: TexturePrimitive => 1,
+);
+
 #[repr(C)]
 #[derive(Copy, Clone)]
-pub struct RoundedRectData {
+pub struct RectPrimitive {
     pub color: Color<u8>,
     pub radius: f32,
     pub thickness: f32,
     pub inner_radius: f32,
 }
+
+#[repr(C)]
+#[derive(Copy, Clone)]
+pub struct TexturePrimitive {
+    pub view_idx: u32,
+    pub sampler_idx: u32,
+}