zgpu

commit a1438671139709c4339234bfb041b2be2656463b
parent 03fd82ba75eb81f0ef56e9c26d33f7e3019a5b0e
Author: Christian Ermann <christianermann@gmail.com>
Date:   Mon, 21 Oct 2024 16:49:24 -0700

Create and release Instance

Diffstat:
A
src/common.zig
 | 
24
++++++++++++++++++++++++
A
src/instance.zig
 | 
24
++++++++++++++++++++++++
M
src/root.zig
 | 
13
+++++--------

3 files changed, 53 insertions(+), 8 deletions(-)
diff --git a/src/common.zig b/src/common.zig
@@ -0,0 +1,24 @@
+const c = @cImport({
+    @cInclude("webgpu.h");
+});
+
+pub const SType = enum(u32) {
+    invalid = 0x00000000,
+    surface_descriptor_from_metal_layer = 0x00000001,
+    surface_descriptor_from_windows_hwnd = 0x00000002,
+    surface_descriptor_from_xlib_window = 0x00000003,
+    surface_descriptor_from_canvas_html_selector = 0x00000004,
+    shader_module_spirv_descriptor = 0x00000005,
+    shader_module_wgsl_descriptor = 0x00000006,
+    primitive_depth_clip_control = 0x00000007,
+    surface_descriptor_from_wayland_surface = 0x00000008,
+    surface_descriptor_from_android_native_window = 0x00000009,
+    surface_descriptor_from_xcb_window = 0x0000000A,
+    render_pass_descriptor_max_draw_count = 0x0000000F,
+    force_32 = 0x7FFFFFFF,
+};
+
+pub const ChainedStruct = extern struct {
+    next: ?*const ChainedStruct,
+    s_type: SType,
+};
diff --git a/src/instance.zig b/src/instance.zig
@@ -0,0 +1,24 @@
+const c = @cImport({
+    @cInclude("webgpu.h");
+});
+
+const ChainedStruct = @import("common.zig").ChainedStruct;
+
+pub const Instance = opaque {
+    pub const Descriptor = extern struct {
+        next_in_chain: ?*const ChainedStruct = null,
+    };
+
+    pub fn create(descriptor: ?*const Descriptor) ?*Instance {
+        return @ptrCast(c.wgpuCreateInstance(@ptrCast(descriptor)));
+    }
+
+    pub fn release(instance: *Instance) void {
+        c.wgpuInstanceRelease(@ptrCast(instance));
+    }
+
+    // createSurface(...)
+    // hasWGSLLanguageFeature(...)
+    // requestAdapter(...)
+    // reference(...)
+};
diff --git a/src/root.zig b/src/root.zig
@@ -1,13 +1,10 @@
-//! By convention, root.zig is the root source file when making a library. If
-//! you are making an executable, the convention is to delete this file and
-//! start with main.zig instead.
 const std = @import("std");
 const testing = std.testing;
 
-export fn add(a: i32, b: i32) i32 {
-    return a + b;
-}
+const Instance = @import("instance.zig").Instance;
 
-test "basic add functionality" {
-    try testing.expect(add(3, 7) == 10);
+test "create instance" {
+    const instance = Instance.create(null);
+    try testing.expect(instance != null);
+    instance.?.release();
 }