From 34ac711d2fe096479c790ddbc4f69e90b18270c0 Mon Sep 17 00:00:00 2001
From: Stephen Gutekanst <stephen@hexops.com>
Date: Sun, 13 Mar 2022 11:23:42 -0700
Subject: [PATCH] gpu: implement Buffer.unmap

Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
---
 gpu/src/Buffer.zig         | 6 +++++-
 gpu/src/NativeInstance.zig | 5 +++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/gpu/src/Buffer.zig b/gpu/src/Buffer.zig
index 0abcc211..8165dfe4 100644
--- a/gpu/src/Buffer.zig
+++ b/gpu/src/Buffer.zig
@@ -16,7 +16,7 @@ pub const VTable = struct {
     // WGPU_EXPORT void * wgpuBufferGetMappedRange(WGPUBuffer buffer, size_t offset, size_t size);
     // WGPU_EXPORT void wgpuBufferMapAsync(WGPUBuffer buffer, WGPUMapModeFlags mode, size_t offset, size_t size, WGPUBufferMapCallback callback, void * userdata);
     setLabel: fn (ptr: *anyopaque, label: [:0]const u8) void,
-    // WGPU_EXPORT void wgpuBufferUnmap(WGPUBuffer buffer);
+    unmap: fn (ptr: *anyopaque) void,
 };
 
 pub inline fn reference(buf: Buffer) void {
@@ -35,6 +35,10 @@ pub inline fn setLabel(buf: Buffer, label: [:0]const u8) void {
     buf.vtable.setLabel(buf.ptr, label);
 }
 
+pub inline fn unmap(buf: Buffer) void {
+    buf.vtable.unmap(buf.ptr);
+}
+
 pub const Descriptor = struct {
     label: ?[*:0]const u8 = null,
     usage: BufferUsage,
diff --git a/gpu/src/NativeInstance.zig b/gpu/src/NativeInstance.zig
index 4fcf473d..fd368052 100644
--- a/gpu/src/NativeInstance.zig
+++ b/gpu/src/NativeInstance.zig
@@ -976,6 +976,11 @@ const buffer_vtable = Buffer.VTable{
             c.wgpuBufferDestroy(@ptrCast(c.WGPUBuffer, ptr));
         }
     }).destroy,
+    .unmap = (struct {
+        pub fn unmap(ptr: *anyopaque) void {
+            c.wgpuBufferUnmap(@ptrCast(c.WGPUBuffer, ptr));
+        }
+    }).unmap,
 };
 
 fn wrapCommandBuffer(buffer: c.WGPUCommandBuffer) CommandBuffer {