adding Descriptors fundamental implementation

src/soft/SoftDescriptorPool.zig

@@ -0,0 +1,38 @@
+const std = @import("std");
+const vk = @import("vulkan");
+const base = @import("base");
+
+const VkError = base.VkError;
+const Device = base.Device;
+
+const Self = @This();
+pub const Interface = base.DescriptorPool;
+
+interface: Interface,
+
+pub fn create(device: *base.Device, allocator: std.mem.Allocator, info: *const vk.DescriptorPoolCreateInfo) VkError!*Self {
+    const self = allocator.create(Self) catch return VkError.OutOfHostMemory;
+    errdefer allocator.destroy(self);
+
+    var interface = try Interface.init(device, allocator, info);
+
+    interface.vtable = &.{
+        .destroy = destroy,
+        .freeDescriptorSets = freeDescriptorSets,
+    };
+
+    self.* = .{
+        .interface = interface,
+    };
+    return self;
+}
+
+pub fn destroy(interface: *Interface, allocator: std.mem.Allocator) void {
+    const self: *Self = @alignCast(@fieldParentPtr("interface", interface));
+    allocator.destroy(self);
+}
+
+pub fn freeDescriptorSets(interface: *Interface, sets: []*base.Dispatchable(base.DescriptorSet)) VkError!void {
+    _ = interface;
+    _ = sets;
+}

src/soft/SoftDescriptorSetLayout.zig

@@ -0,0 +1,32 @@
+const std = @import("std");
+const vk = @import("vulkan");
+const base = @import("base");
+
+const VkError = base.VkError;
+const Device = base.Device;
+
+const Self = @This();
+pub const Interface = base.DescriptorSetLayout;
+
+interface: Interface,
+
+pub fn create(device: *base.Device, allocator: std.mem.Allocator, info: *const vk.DescriptorSetLayoutCreateInfo) VkError!*Self {
+    const self = allocator.create(Self) catch return VkError.OutOfHostMemory;
+    errdefer allocator.destroy(self);
+
+    var interface = try Interface.init(device, allocator, info);
+
+    interface.vtable = &.{
+        .destroy = destroy,
+    };
+
+    self.* = .{
+        .interface = interface,
+    };
+    return self;
+}
+
+pub fn destroy(interface: *Interface, allocator: std.mem.Allocator) void {
+    const self: *Self = @alignCast(@fieldParentPtr("interface", interface));
+    allocator.destroy(self);
+}

src/soft/SoftDevice.zig

@@ -10,6 +10,8 @@ const SoftQueue = @import("SoftQueue.zig");
 
 const SoftBuffer = @import("SoftBuffer.zig");
 const SoftDeviceMemory = @import("SoftDeviceMemory.zig");
+const SoftDescriptorPool = @import("SoftDescriptorPool.zig");
+const SoftDescriptorSetLayout = @import("SoftDescriptorSetLayout.zig");
 const SoftFence = @import("SoftFence.zig");
 const SoftImage = @import("SoftImage.zig");
 const SoftImageView = @import("SoftImageView.zig");
@@ -40,6 +42,8 @@ pub fn create(physical_device: *base.PhysicalDevice, allocator: std.mem.Allocato
         .allocateMemory = allocateMemory,
         .createBuffer = createBuffer,
         .createCommandPool = createCommandPool,
+        .createDescriptorPool = createDescriptorPool,
+        .createDescriptorSetLayout = createDescriptorSetLayout,
         .createFence = createFence,
         .createImage = createImage,
         .createImageView = createImageView,
@@ -86,6 +90,16 @@ pub fn createBuffer(interface: *Interface, allocator: std.mem.Allocator, info: *
     return &buffer.interface;
 }
 
+pub fn createDescriptorPool(interface: *Interface, allocator: std.mem.Allocator, info: *const vk.DescriptorPoolCreateInfo) VkError!*base.DescriptorPool {
+    const pool = try SoftDescriptorPool.create(interface, allocator, info);
+    return &pool.interface;
+}
+
+pub fn createDescriptorSetLayout(interface: *Interface, allocator: std.mem.Allocator, info: *const vk.DescriptorSetLayoutCreateInfo) VkError!*base.DescriptorSetLayout {
+    const layout = try SoftDescriptorSetLayout.create(interface, allocator, info);
+    return &layout.interface;
+}
+
 pub fn createFence(interface: *Interface, allocator: std.mem.Allocator, info: *const vk.FenceCreateInfo) VkError!*base.Fence {
     const fence = try SoftFence.create(interface, allocator, info);
     return &fence.interface;

src/soft/lib.zig

@@ -13,6 +13,8 @@ pub const SoftBuffer = @import("SoftBuffer.zig");
 pub const SoftCommandBuffer = @import("SoftCommandBuffer.zig");
 pub const SoftCommandPool = @import("SoftCommandPool.zig");
 pub const SoftDeviceMemory = @import("SoftDeviceMemory.zig");
+pub const SoftDescriptorPool = @import("SoftDescriptorPool.zig");
+pub const SoftDescriptorSetLayout = @import("SoftDescriptorSetLayout.zig");
 pub const SoftFence = @import("SoftFence.zig");
 pub const SoftImage = @import("SoftImage.zig");
 pub const SoftImageView = @import("SoftImageView.zig");