From 58e3531cd2316e9c73b01221d68834592ad6a2ff Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Tue, 28 Jan 2025 15:25:50 +0100
Subject: Little endian, tangent space handedness,

---
 client/src/render/shaders/vertex_world_skin.wgsl | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

(limited to 'client/src/render/shaders/vertex_world_skin.wgsl')

diff --git a/client/src/render/shaders/vertex_world_skin.wgsl b/client/src/render/shaders/vertex_world_skin.wgsl
index 6e2b308..2188cf4 100644
--- a/client/src/render/shaders/vertex_world_skin.wgsl
+++ b/client/src/render/shaders/vertex_world_skin.wgsl
@@ -16,7 +16,7 @@
 struct VertexIn {
     @location(0) position: vec3<f32>,
     @location(1) normal: vec3<f32>,
-    @location(2) tangent: vec3<f32>, // TODO maybe compress this
+    @location(2) tangent: vec4<f32>, // TODO maybe compress this
     @location(3) texcoord: vec2<f32>,
     @location(4) joint_index: vec4<u32>,
     @location(5) joint_weight: vec4<f32>,
@@ -25,8 +25,9 @@ struct VertexOut {
     @builtin(position) clip: vec4<f32>,
     @location(0) normal: vec3<f32>,
     @location(1) tangent: vec3<f32>,
-    @location(2) texcoord: vec2<f32>,
-    @location(3) position: vec3<f32>,
+    @location(2) tangent_binormal_sign: f32,
+    @location(3) texcoord: vec2<f32>,
+    @location(4) position: vec3<f32>,
 }
 
 struct PushConst {
@@ -50,7 +51,8 @@ fn main(vi: VertexIn) -> VertexOut {
     let vo = VertexOut(
         clip,
         normalize((pc.model * vec4(vi.normal, 0.)).xyz),
-        normalize((pc.model * vec4(vi.tangent, 0.)).xyz),
+        normalize((pc.model * vec4(vi.tangent.xyz, 0.)).xyz),
+        vi.tangent.w,
         vi.texcoord,
         (pc.model * vec4(vi.position, 1.)).xyz,
     );
-- 
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