fix memory layout

tape-drive/compile_shaders.py

@@ -32,6 +32,7 @@ for shader in normal_shaders:
             f"-I{SHADERS_INCLUDE}",
             "--spirv-val",
             "-gVS",
+            # "-q",
             "--target-env",
             TARGET_ENV,
             "-o",

tape-drive/shaders/include/include.glsl

@@ -45,6 +45,9 @@ layout(set = 0, binding = 3, std430) restrict readonly buffer Indicies {
 } indicies;
 
 struct Object {
+    // TRANSFORM
+    uint transform_offset;
+
     // MESH
     uint vert_offset;
     uint index_offset;
@@ -55,7 +58,6 @@ struct Object {
     uint subdivision_log2;
 
     // MATERIAL
-    vec4 colour_and_roughness;
     float metallic;
     float subsurface;
     float specular;
@@ -64,9 +66,7 @@ struct Object {
     float sheen_tint;
     float clear_coat_gloss;
     float clear_coat;
-
+    vec4 colour_and_roughness;
-    // TRANSFORM
-    uint transform_offset;
 };
 
 layout(set = 0, binding = 4, std430) restrict readonly buffer Objects {
@@ -74,10 +74,9 @@ layout(set = 0, binding = 4, std430) restrict readonly buffer Objects {
 } objects;
 
 struct Transform {
-    vec3 x;
+    vec4 x;
-    vec3 y;
+    vec4 y;
-    vec3 z;
+    vec4 z;
-    vec3 w;
 };
 
 layout(set = 0, binding = 5, std430) restrict readonly buffer Transforms {

tape-drive/shaders/normal/mesh.rchit.glsl

@@ -26,7 +26,7 @@ void main() {
 
     // transform to world space
     Transform t = transforms.transforms[obj.transform_offset];
-    mat3 object_transform = mat3(t.x, t.y, t.z);
+    mat3 object_transform = mat3(t.x.xyz, t.y.xyz, t.z.xyz);
     vec3 normal = normalize((inverse(object_transform) * local_normal).xyz);
 
     hit_value.normal = normal;