diff --git a/gpu/src/sampler.zig b/gpu/src/sampler.zig
index 1d5a6e81..c3e1f889 100644
--- a/gpu/src/sampler.zig
+++ b/gpu/src/sampler.zig
@@ -38,14 +38,14 @@ pub const SamplerBindingLayout = extern struct {
 pub const SamplerDescriptor = extern struct {
     next_in_chain: *const ChainedStruct,
     label: ?[*:0]const u8 = null,
-    address_mode_u: SamplerAddressMode,
-    address_mode_v: SamplerAddressMode,
-    address_mode_w: SamplerAddressMode,
-    mag_filter: FilterMode,
-    min_filter: FilterMode,
-    mipmap_filter: FilterMode,
-    lod_min_clamp: f32,
-    lod_max_clamp: f32,
-    compare: CompareFunction,
-    max_anisotropy: u16,
+    address_mode_u: SamplerAddressMode = .clamp_to_edge,
+    address_mode_v: SamplerAddressMode = .clamp_to_edge,
+    address_mode_w: SamplerAddressMode = .clamp_to_edge,
+    mag_filter: FilterMode = .nearest,
+    min_filter: FilterMode = .nearest,
+    mipmap_filter: FilterMode = .nearest,
+    lod_min_clamp: f32 = 0.0,
+    lod_max_clamp: f32 = 1000.0,
+    compare: CompareFunction = .undef,
+    max_anisotropy: u16 = 1,
 };