From c71e165e7afe563b7a65d6b994314bb403df5f04 Mon Sep 17 00:00:00 2001
From: omniscient <17525998+omnisci3nce@users.noreply.github.com>
Date: Sun, 4 Aug 2024 01:15:45 +1000
Subject: more rust binding incremental changes

---
 bindgen/rust/examples/shaders.rs | 48 +++++++++++++++++++++-------------------
 1 file changed, 25 insertions(+), 23 deletions(-)

(limited to 'bindgen/rust/examples')

diff --git a/bindgen/rust/examples/shaders.rs b/bindgen/rust/examples/shaders.rs
index 842a8d2..09f13b4 100644
--- a/bindgen/rust/examples/shaders.rs
+++ b/bindgen/rust/examples/shaders.rs
@@ -1,9 +1,12 @@
-use celeritas::ral::{ShaderData, ShaderDataLayout};
+use celeritas::ral::{
+    ShaderBinding, ShaderBindingKind, ShaderData, ShaderDataLayout, ShaderVisibility,
+};
 use celeritas_sys::{
-    Mat4, ShaderVisibility_VISIBILITY_COMPUTE, ShaderVisibility_VISIBILITY_FRAGMENT,
-    ShaderVisibility_VISIBILITY_VERTEX,
+    GPU_EncodeBindShaderDataRaw, GPU_GetDefaultEncoder, Mat4, ShaderVisibility_VISIBILITY_COMPUTE,
+    ShaderVisibility_VISIBILITY_FRAGMENT, ShaderVisibility_VISIBILITY_VERTEX,
 };
 
+#[repr(C)]
 struct MVP {
     model: Mat4,
     view: Mat4,
@@ -18,29 +21,28 @@ fn shader_vis_all() -> u32 {
 
 impl ShaderData for MVP {
     fn layout() -> ShaderDataLayout {
-        let mut bindings = [ShaderBinding::default(); 8];
-        // bindings[0] = ShaderBinding {
-        //     label: unsafe { CStr::from_bytes_with_nul_unchecked(b"MVP\0").as_ptr() },
-        //     kind: ShaderBindingKind_BINDING_BYTES,
-        //     vis: shader_vis_all(),
-        //     data: ShaderBinding__bindgen_ty_1 {
-        //         bytes: ShaderBinding__bindgen_ty_1__bindgen_ty_1 {
-        //             size: std::mem::size_of::<MVP>() as u32,
-        //             data: ptr::null_mut(),
-        //         },
-        //     },
-        // };
-        ShaderDataLayout {
-            bindings: todo!(),
-            binding_count: 1,
-        }
+        let mut bindings: heapless::Vec<ShaderBinding, 8> = heapless::Vec::new();
+        let _ = bindings.push(ShaderBinding {
+            label: "MVP".to_string(),
+            kind: ShaderBindingKind::Bytes {
+                size: std::mem::size_of::<MVP>(),
+                data: None,
+            },
+            vis: ShaderVisibility::all(),
+        });
+        ShaderDataLayout { bindings }
     }
 
     fn bind(&self) {
-        let layout = Self::layout();
-        for i in 0..layout.binding_count {
-            let binding = &layout.bindings[i];
-            // match binding.kind {}
+        let mut layout = Self::layout();
+        let b0 = &mut layout.bindings[0];
+        b0.kind = ShaderBindingKind::Bytes {
+            size: std::mem::size_of::<MVP>(),
+            data: Some((self as *const MVP) as *mut u8),
+        };
+
+        unsafe {
+            GPU_EncodeBindShaderDataRaw(GPU_GetDefaultEncoder(), 0, layout.into_ffi_type());
         }
     }
 }
-- 
cgit v1.2.3-70-g09d2