79 lines
2.8 KiB
Zig
79 lines
2.8 KiB
Zig
const std = @import("std");
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const vk = @import("vulkan");
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const base = @import("base");
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const SoftPhysicalDevice = @import("SoftPhysicalDevice.zig");
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const Dispatchable = base.Dispatchable;
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const VkError = base.VkError;
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const Self = @This();
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pub const Interface = base.Instance;
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interface: Interface,
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threaded: std.Io.Threaded,
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io_impl: std.Io,
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allocator: std.mem.Allocator,
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fn castExtension(comptime ext: vk.ApiInfo) vk.ExtensionProperties {
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var props: vk.ExtensionProperties = .{
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.extension_name = @splat(0),
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.spec_version = @bitCast(ext.version),
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};
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@memcpy(props.extension_name[0..ext.name.len], ext.name);
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return props;
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}
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pub const EXTENSIONS = [_]vk.ExtensionProperties{
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castExtension(vk.extensions.khr_get_physical_device_properties_2),
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castExtension(vk.extensions.khr_surface),
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castExtension(vk.extensions.khr_wayland_surface),
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};
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pub fn create(allocator: std.mem.Allocator, infos: *const vk.InstanceCreateInfo) VkError!*Interface {
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const self = allocator.create(Self) catch return VkError.OutOfHostMemory;
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errdefer allocator.destroy(self);
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self.allocator = std.heap.smp_allocator;
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self.threaded = if (comptime base.config.single_threaded) .init_single_threaded else std.Io.Threaded.init(self.allocator, .{});
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self.io_impl = self.threaded.io();
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self.interface = try base.Instance.init(allocator, infos);
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self.interface.dispatch_table = &.{
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.destroy = destroy,
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};
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self.interface.vtable = &.{
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.requestPhysicalDevices = requestPhysicalDevices,
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.releasePhysicalDevices = releasePhysicalDevices,
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.io = io,
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};
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return &self.interface;
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}
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fn destroy(interface: *Interface, allocator: std.mem.Allocator) VkError!void {
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const self: *Self = @alignCast(@fieldParentPtr("interface", interface));
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self.threaded.deinit();
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allocator.destroy(self);
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}
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fn requestPhysicalDevices(interface: *Interface, allocator: std.mem.Allocator) VkError!void {
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// Software driver has only one physical device (the CPU)
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const physical_device = try SoftPhysicalDevice.create(allocator, interface);
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errdefer physical_device.interface.releasePhysicalDevice(allocator) catch {};
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interface.physical_devices.append(allocator, try Dispatchable(base.PhysicalDevice).wrap(allocator, &physical_device.interface)) catch return VkError.OutOfHostMemory;
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}
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fn releasePhysicalDevices(interface: *Interface, allocator: std.mem.Allocator) VkError!void {
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const physical_device = interface.physical_devices.getLast();
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try physical_device.object.releasePhysicalDevice(allocator);
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physical_device.destroy(allocator);
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interface.physical_devices.deinit(allocator);
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interface.physical_devices = .empty;
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}
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fn io(interface: *Interface) std.Io {
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const self: *Self = @alignCast(@fieldParentPtr("interface", interface));
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return self.io_impl;
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}
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