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gpu: use requestAdapter in example

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
This commit is contained in:
Stephen Gutekanst 2022-03-07 01:31:01 -07:00 • committed by Stephen Gutekanst
parent 60702eb9e6
commit c7c8764129
1 changed files with 28 additions and 22 deletions
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50
gpu/examples/sample_utils.zig
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@ -76,33 +76,39 @@ pub fn setup(allocator: std.mem.Allocator) !Setup {
const window = try glfw.Window.create(640, 480, "Dawn window", null, null, hints);
const instance = c.machDawnNativeInstance_init();
try discoverAdapter(instance, window, backend_type);
const adapters = c.machDawnNativeInstance_getAdapters(instance);
var backend_adapter: ?c.MachDawnNativeAdapter = null;
var i: usize = 0;
while (i < c.machDawnNativeAdapters_length(adapters)) : (i += 1) {
const adapter = c.machDawnNativeAdapters_index(adapters, i);
const properties = c.machDawnNativeAdapter_getProperties(adapter);
if (c.machDawnNativeAdapterProperties_getBackendType(properties) == backend_type) {
const name = c.machDawnNativeAdapterProperties_getName(properties);
const driver_description = c.machDawnNativeAdapterProperties_getDriverDescription(properties);
std.debug.print("found {s} adapter: {s}, {s}\n", .{ backendTypeString(backend_type), name, driver_description });
backend_adapter = adapter;
}
}
assert(backend_adapter != null);
const backend_device = c.machDawnNativeAdapter_createDevice(backend_adapter.?, null);
const backend_procs = c.machDawnNativeGetProcs();
c.dawnProcSetProcs(backend_procs);
backend_procs.*.deviceSetUncapturedErrorCallback.?(backend_device, printDeviceError, null);
var native_instance = gpu.NativeInstance.wrap(c.machDawnNativeInstance_get(instance).?);
const gpu_interface = native_instance.interface();
// Discovers e.g. OpenGL adapters.
try discoverAdapters(instance, window, backend_type);
// Request an adapter.
const backend_adapter = switch (nosuspend gpu_interface.requestAdapter(&.{})) {
.adapter => |v| v,
.err => |err| {
std.debug.print("failed to get adapter: error={} {s}\n", .{ err.code, err.message });
std.process.exit(1);
},
};
// TODO: print information about the adapter.
// const name = c.machDawnNativeAdapterProperties_getName(properties);
// const driver_description = c.machDawnNativeAdapterProperties_getDriverDescription(properties);
// std.debug.print("found {s} adapter: {s}, {s}\n", .{ backendTypeString(backend_type), name, driver_description });
_ = backend_adapter;
std.debug.print("got adapter! requestDevice not yet implemented..", .{});
std.process.exit(1);
// const backend_device = c.machDawnNativeAdapter_createDevice(backend_adapter.?, null);
// backend_procs.*.deviceSetUncapturedErrorCallback.?(backend_device, printDeviceError, null);
return Setup{
.native_instance = gpu.NativeInstance.wrap(c.machDawnNativeInstance_get(instance).?),
.native_instance = native_instance,
.instance = c.machDawnNativeInstance_get(instance),
.backend_type = backend_type,
.device = backend_device,
.device = undefined,
.window = window,
};
}
@ -131,7 +137,7 @@ fn glfwWindowHintsForBackend(backend: c.WGPUBackendType) glfw.Window.Hints {
};
}
fn discoverAdapter(instance: c.MachDawnNativeInstance, window: glfw.Window, typ: c.WGPUBackendType) !void {
fn discoverAdapters(instance: c.MachDawnNativeInstance, window: glfw.Window, typ: c.WGPUBackendType) !void {
if (typ == c.WGPUBackendType_OpenGL) {
try glfw.makeContextCurrent(window);
const adapter_options = c.MachDawnNativeAdapterDiscoveryOptions_OpenGL{