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gpu: use Surface API in example

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-03-06 21:54:27 -07:00 • committed by Stephen Gutekanst
parent 8f5e9f89e5
commit 9916ec043b
2 changed files with 27 additions and 39 deletions
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6
gpu/examples/main.zig
View file

@ -2,6 +2,7 @@ const std = @import("std");
const sample_utils = @import("sample_utils.zig");
const c = @import("c.zig").c;
const glfw = @import("glfw");
const gpu = @import("gpu");
pub fn main() !void {
var gpa = std.heap.GeneralPurposeAllocator(.{}){};
@ -37,11 +38,12 @@ pub fn main() !void {
.presentMode = c.WGPUPresentMode_Fifo,
.implementation = 0,
};
window_data.surface = sample_utils.createSurfaceForWindow(
setup.instance,
const surface = sample_utils.createSurfaceForWindow(
&setup.native_instance,
setup.window,
comptime sample_utils.detectGLFWOptions(),
);
window_data.surface = @ptrCast(c.WGPUSurface, surface.ptr);
} else {
const binding = c.machUtilsCreateBinding(setup.backend_type, @ptrCast(*c.GLFWwindow, setup.window.handle), setup.device);
if (binding == null) {

60
gpu/examples/sample_utils.zig
View file

@ -160,40 +160,24 @@ pub fn detectGLFWOptions() glfw.BackendOptions {
}
pub fn createSurfaceForWindow(
instance: c.WGPUInstance,
native_instance: *const gpu.NativeInstance,
window: glfw.Window,
comptime glfw_options: glfw.BackendOptions,
) c.WGPUSurface {
) gpu.Surface {
const glfw_native = glfw.Native(glfw_options);
if (glfw_options.win32) {
var desc: c.WGPUSurfaceDescriptorFromWindowsHWND = undefined;
desc.chain.next = null;
desc.chain.sType = c.WGPUSType_SurfaceDescriptorFromWindowsHWND;
desc.hinstance = std.os.windows.kernel32.GetModuleHandleW(null);
desc.hwnd = glfw_native.getWin32Window(window);
var descriptor: c.WGPUSurfaceDescriptor = undefined;
descriptor.nextInChain = @ptrCast(*c.WGPUChainedStruct, &desc);
descriptor.label = "basic surface";
return c.wgpuInstanceCreateSurface(instance, &descriptor);
} else if (glfw_options.x11) {
var desc: c.WGPUSurfaceDescriptorFromXlibWindow = undefined;
desc.chain.next = null;
desc.chain.sType = c.WGPUSType_SurfaceDescriptorFromXlibWindow;
desc.display = glfw_native.getX11Display();
desc.window = glfw_native.getX11Window(window);
var descriptor: c.WGPUSurfaceDescriptor = undefined;
descriptor.nextInChain = @ptrCast(*c.WGPUChainedStruct, &desc);
descriptor.label = "basic surface";
return c.wgpuInstanceCreateSurface(instance, &descriptor);
} else if (glfw_options.cocoa) {
var desc: c.WGPUSurfaceDescriptorFromMetalLayer = undefined;
desc.chain.next = null;
desc.chain.sType = c.WGPUSType_SurfaceDescriptorFromMetalLayer;
const descriptor = if (glfw_options.win32) gpu.Surface.Descriptor{
.windows_hwnd = .{
.label = "basic surface",
.hinstance = std.os.windows.kernel32.GetModuleHandleW(null),
.hwnd = glfw_native.getWin32Window(window),
},
} else if (glfw_options.x11) gpu.Surface.Descriptor{
.xlib_window = .{
.label = "basic surface",
.display = glfw_native.getX11Display(),
.window = glfw_native.getX11Window(window),
},
} else if (glfw_options.cocoa) blk: {
const ns_window = glfw_native.getCocoaWindow(window);
const ns_view = msgSend(ns_window, "contentView", .{}, *anyopaque); // [nsWindow contentView]
@ -207,15 +191,17 @@ pub fn createSurfaceForWindow(
const scale_factor = msgSend(ns_window, "backingScaleFactor", .{}, f64); // [ns_window backingScaleFactor]
msgSend(layer.?, "setContentsScale:", .{scale_factor}, void); // [layer setContentsScale:scale_factor]
desc.layer = layer.?;
var descriptor: c.WGPUSurfaceDescriptor = undefined;
descriptor.nextInChain = @ptrCast(*c.WGPUChainedStruct, &desc);
descriptor.label = "basic surface";
return c.wgpuInstanceCreateSurface(instance, &descriptor);
break :blk gpu.Surface.Descriptor{
.metal_layer = .{
.label = "basic surface",
.layer = layer.?,
},
};
} else if (glfw_options.wayland) {
@panic("Dawn does not yet have Wayland support, see https://bugs.chromium.org/p/dawn/issues/detail?id=1246&q=surface&can=2");
} else unreachable;
return native_instance.createSurface(&descriptor);
}
// Borrowed from https://github.com/hazeycode/zig-objcrt