gpu: add MultisampleState

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>

gpu/TODO-webgpu.h

@@ -1,10 +1,3 @@
-typedef struct WGPUMultisampleState {
-    next_in_chain: *const ChainedStruct,
-    count: u32,
-    mask: u32,
-    alpha_to_coverage_enabled: bool,
-} WGPUMultisampleState;
-
 typedef struct WGPUPipelineLayoutDescriptor {
     next_in_chain: *const ChainedStruct,
     label: ?[*:0]const u8 = null,

gpu/src/main.zig

@@ -47,17 +47,6 @@ pub const ComputePassTimestampWrite = struct {
     location: ComputePassTimestampLocation,
 };
 
-pub const CopyTextureForBrowserOptions = extern struct {
-    next_in_chain: *const ChainedStruct,
-    flip_y: bool,
-    needs_color_space_conversion: bool,
-    src_alpha_mode: AlphaMode,
-    src_transfer_function_parameters: ?*const f32 = null,
-    conversion_matrix: ?*const f32 = null,
-    dst_transfer_function_parameters: ?*const f32 = null,
-    dst_alpha_mode: AlphaMode,
-};
-
 test {
     refAllDecls(@import("adapter.zig"));
     refAllDecls(@import("bind_group.zig"));

gpu/src/types.zig

@@ -446,6 +446,24 @@ pub const ConstantEntry = extern struct {
     value: f64,
 };
 
+pub const CopyTextureForBrowserOptions = extern struct {
+    next_in_chain: *const ChainedStruct,
+    flip_y: bool,
+    needs_color_space_conversion: bool,
+    src_alpha_mode: AlphaMode,
+    src_transfer_function_parameters: ?*const f32 = null,
+    conversion_matrix: ?*const f32 = null,
+    dst_transfer_function_parameters: ?*const f32 = null,
+    dst_alpha_mode: AlphaMode,
+};
+
+pub const MultisampleState = struct {
+    next_in_chain: *const ChainedStruct,
+    count: u32,
+    mask: u32,
+    alpha_to_coverage_enabled: bool,
+};
+
 test "BackendType name" {
     try testing.expectEqualStrings("Vulkan", BackendType.vulkan.name());
 }