adding fragment derivatives, base pipeline cache, missing KHR function to avoid CTS crash + lots of minor bugfixes

README.md

@@ -113,7 +113,7 @@ vkCreatePipelineLayout                           | ✅ Implemented
 vkCreateQueryPool                                | ✅ Implemented
 vkCreateRenderPass                               | ✅ Implemented
 vkCreateSampler                                  | ✅ Implemented
-vkCreateSemaphore                                | ⚙️ WIP
+vkCreateSemaphore                                | ✅ Implemented
 vkCreateShaderModule                             | ✅ Implemented
 vkCreateSwapchainKHR                             | ✅ Implemented
 vkCreateWaylandSurfaceKHR                        | ✅ Implemented
@@ -149,6 +149,8 @@ vkEnumerateDeviceLayerProperties                 | ✅ Implemented
 vkEnumerateInstanceExtensionProperties           | ✅ Implemented
 vkEnumerateInstanceLayerProperties               | ✅ Implemented
 vkEnumeratePhysicalDevices                       | ✅ Implemented
+vkEnumeratePhysicalDeviceGroups                  | ✅ Implemented
+vkEnumeratePhysicalDeviceGroupsKHR               | ✅ Implemented
 vkFlushMappedMemoryRanges                        | ✅ Implemented
 vkFreeCommandBuffers                             | ✅ Implemented
 vkFreeDescriptorSets                             | ✅ Implemented
@@ -179,7 +181,7 @@ vkGetPhysicalDeviceWin32PresentationSupportKHR   | ⚙️ WIP
 vkGetPhysicalDeviceXcbPresentationSupportKHR     | ⚙️ WIP
 vkGetPhysicalDeviceXlibPresentationSupportKHR    | ⚙️ WIP
 vkGetPipelineCacheData                           | ⚙️ WIP
-vkGetQueryPoolResults                            | ⚙️ WIP
+vkGetQueryPoolResults                            | ✅ Implemented
 vkGetRenderAreaGranularity                       | ✅ Implemented
 vkGetSwapchainImagesKHR                          | ✅ Implemented
 vkInvalidateMappedMemoryRanges                   | ✅ Implemented

build.zig.zon

@@ -26,8 +26,8 @@
             .hash = "N-V-__8AAF9uOh0I4P_99za7N822J3JwsDaqONrFVrcEQo59",
         },
         .SPIRV_Interpreter = .{
-            .url = "git+https://git.kbz8.me/kbz_8/SPIRV-Interpreter#7c6da62e3cc6e58260527abef6e2e161e45d7f84",
+            .url = "git+https://git.kbz8.me/kbz_8/SPIRV-Interpreter#9270d83464afc32c8ea3dd89931056421046df5b",
-            .hash = "SPIRV_Interpreter-0.0.1-ajmpnzALBgCxqYfFMsc_moezDHsaeKyImzHXuJ7dYffX",
+            .hash = "SPIRV_Interpreter-0.0.1-ajmpn_V1BgDlmfIb9PHyP2cij9m63vE-Nx0o4mFsEd9L",
             .lazy = true,
         },
         //.SPIRV_Interpreter = .{

src/soft/SoftCommandBuffer.zig

@@ -104,8 +104,8 @@ pub fn destroy(interface: *Interface, allocator: std.mem.Allocator) void {
     allocator.destroy(self);
 }
 
-pub fn execute(self: *Self, device: *ExecutionDevice) void {
+pub fn execute(self: *Self, device: *ExecutionDevice) VkError!void {
-    self.interface.submit() catch return;
+    try self.interface.submit();
     defer self.interface.finish() catch {};
 
     for (self.commands.items) |command| {
@@ -116,7 +116,7 @@ pub fn execute(self: *Self, device: *ExecutionDevice) void {
                     std.debug.dumpErrorReturnTrace(trace);
                 }
             }
-            return; // Should we return or continue ? Maybe device lost ?
+            return VkError.DeviceLost;
         };
     }
 }
@@ -988,7 +988,7 @@ pub fn executeCommands(interface: *Interface, commands: *Interface) VkError!void
 
         pub fn execute(context: *anyopaque, device: *ExecutionDevice) VkError!void {
             const impl: *Impl = @ptrCast(@alignCast(context));
-            impl.cmd.execute(device);
+            try impl.cmd.execute(device);
         }
     };
 

src/soft/SoftDescriptorPool.zig

@@ -46,6 +46,10 @@ pub fn allocateDescriptorSet(interface: *Interface, layout: *base.DescriptorSetL
 
 pub fn destroy(interface: *Interface, allocator: std.mem.Allocator) void {
     const self: *Self = @alignCast(@fieldParentPtr("interface", interface));
+    const set_allocator = VulkanAllocator.init(null, .object).allocator();
+    for (self.list.items) |set| {
+        set.interface.destroy(set_allocator);
+    }
     self.list.deinit(allocator);
     allocator.destroy(self);
 }
@@ -59,7 +63,7 @@ pub fn freeDescriptorSet(interface: *Interface, set: *base.DescriptorSet) VkErro
     }
 
     const allocator = VulkanAllocator.init(null, .object).allocator();
-    allocator.destroy(soft_set);
+    set.destroy(allocator);
 }
 
 pub fn reset(interface: *Interface, _: vk.DescriptorPoolResetFlags) VkError!void {
@@ -67,7 +71,7 @@ pub fn reset(interface: *Interface, _: vk.DescriptorPoolResetFlags) VkError!void
     const allocator = VulkanAllocator.init(null, .object).allocator();
 
     for (self.list.items) |set| {
-        allocator.destroy(set);
+        set.interface.destroy(allocator);
     }
     self.list.clearRetainingCapacity();
 }

src/soft/SoftDevice.zig

@@ -46,7 +46,14 @@ device_allocator: if (config.debug_allocator) std.heap.DebugAllocator(.{}) else
 
 pub fn create(instance: *base.Instance, physical_device: *base.PhysicalDevice, allocator: std.mem.Allocator, info: *const vk.DeviceCreateInfo) VkError!*Self {
     const self = allocator.create(Self) catch return VkError.OutOfHostMemory;
-    errdefer allocator.destroy(self);
+    var initialized = false;
+    errdefer {
+        if (initialized) {
+            self.interface.destroy(allocator) catch {};
+        } else {
+            allocator.destroy(self);
+        }
+    }
 
     var interface = try Interface.init(allocator, instance, physical_device, info);
 
@@ -83,6 +90,7 @@ pub fn create(instance: *base.Instance, physical_device: *base.PhysicalDevice, a
         .interface = interface,
         .device_allocator = if (config.debug_allocator) .init else .{},
     };
+    initialized = true;
 
     try self.interface.createQueues(allocator, info);
     return self;

src/soft/SoftInstance.zig

@@ -25,6 +25,7 @@ fn castExtension(comptime ext: vk.ApiInfo) vk.ExtensionProperties {
 }
 
 pub const EXTENSIONS = [_]vk.ExtensionProperties{
+    castExtension(vk.extensions.khr_device_group_creation),
     castExtension(vk.extensions.khr_get_physical_device_properties_2),
     castExtension(vk.extensions.khr_surface),
     castExtension(vk.extensions.khr_wayland_surface),
@@ -60,13 +61,16 @@ fn requestPhysicalDevices(interface: *Interface, allocator: std.mem.Allocator) V
     // Software driver has only one physical device (the CPU)
     const physical_device = try SoftPhysicalDevice.create(allocator, interface);
     errdefer physical_device.interface.releasePhysicalDevice(allocator) catch {};
-    interface.physical_devices.append(allocator, try Dispatchable(base.PhysicalDevice).wrap(allocator, &physical_device.interface)) catch return VkError.OutOfHostMemory;
+    const dispatchable = try Dispatchable(base.PhysicalDevice).wrap(allocator, &physical_device.interface);
+    errdefer dispatchable.destroy(allocator);
+    interface.physical_devices.append(allocator, dispatchable) catch return VkError.OutOfHostMemory;
 }
 
 fn releasePhysicalDevices(interface: *Interface, allocator: std.mem.Allocator) VkError!void {
-    const physical_device = interface.physical_devices.getLast();
+    for (interface.physical_devices.items) |physical_device| {
-    try physical_device.object.releasePhysicalDevice(allocator);
+        try physical_device.object.releasePhysicalDevice(allocator);
-    physical_device.destroy(allocator);
+        physical_device.destroy(allocator);
+    }
 
     interface.physical_devices.deinit(allocator);
     interface.physical_devices = .empty;

src/soft/SoftPhysicalDevice.zig

@@ -22,7 +22,7 @@ fn castExtension(comptime ext: vk.ApiInfo) vk.ExtensionProperties {
     return props;
 }
 
-const EXTENSIONS = [_]vk.ExtensionProperties{
+pub const EXTENSIONS = [_]vk.ExtensionProperties{
     castExtension(vk.extensions.khr_swapchain),
 };
 
@@ -59,6 +59,7 @@ pub fn create(allocator: std.mem.Allocator, instance: *base.Instance) VkError!*S
     interface.props.driver_version = @bitCast(lib.DRIVER_VERSION);
     interface.props.device_id = lib.DEVICE_ID;
     interface.props.device_type = .cpu;
+    interface.props.pipeline_cache_uuid = lib.PIPELINE_CACHE_UUID;
     interface.props.limits = .{
         .max_image_dimension_1d = 4096,
         .max_image_dimension_2d = 4096,
@@ -203,7 +204,6 @@ pub fn create(allocator: std.mem.Allocator, instance: *base.Instance) VkError!*S
 
     if (device_name[0] == 0) {
         const name = blk: {
-
             // If arch is x86 we try to get precise CPU name through CPUID
             // and fallback to vendor name if not available
             if (comptime builtin.cpu.arch.isX86()) {
@@ -251,6 +251,7 @@ pub fn create(allocator: std.mem.Allocator, instance: *base.Instance) VkError!*S
     self.* = .{
         .interface = interface,
     };
+
     return self;
 }
 
@@ -274,11 +275,16 @@ pub fn enumerateExtensionProperties(_: *const Interface, layer_name: ?[]const u8
         return VkError.LayerNotPresent;
     }
 
-    count.* = EXTENSIONS.len;
+    const available = EXTENSIONS.len;
     if (p_properties) |properties| {
-        for (EXTENSIONS, properties[0..]) |ext, *prop| {
+        const write_count = @min(count.*, available);
+        for (EXTENSIONS[0..write_count], properties[0..write_count]) |ext, *prop| {
             prop.* = ext;
         }
+        count.* = @intCast(write_count);
+        if (write_count < available) return VkError.Incomplete;
+    } else {
+        count.* = @intCast(available);
     }
 }
 

src/soft/SoftPipeline.zig

@@ -52,7 +52,8 @@ stages: std.EnumMap(Stages, Shader),
 
 pub fn createCompute(device: *base.Device, allocator: std.mem.Allocator, cache: ?*base.PipelineCache, info: *const vk.ComputePipelineCreateInfo) VkError!*Self {
     const self = allocator.create(Self) catch return VkError.OutOfHostMemory;
-    errdefer allocator.destroy(self);
+    var initialized = false;
+    errdefer if (initialized) self.interface.destroy(allocator) else allocator.destroy(self);
 
     var interface = try Interface.initCompute(device, allocator, cache, info);
 
@@ -71,7 +72,7 @@ pub fn createCompute(device: *base.Device, allocator: std.mem.Allocator, cache:
         .runtimes_allocator = .init(device_allocator),
         .stages = std.EnumMap(Stages, Shader).init(.{}),
     };
-    errdefer self.runtimes_allocator.deinit();
+    initialized = true;
     const runtimes_allocator = self.runtimes_allocator.allocator();
 
     const instance: *SoftInstance = @alignCast(@fieldParentPtr("interface", device.instance));
@@ -138,7 +139,8 @@ pub fn createCompute(device: *base.Device, allocator: std.mem.Allocator, cache:
 
 pub fn createGraphics(device: *base.Device, allocator: std.mem.Allocator, cache: ?*base.PipelineCache, info: *const vk.GraphicsPipelineCreateInfo) VkError!*Self {
     const self = allocator.create(Self) catch return VkError.OutOfHostMemory;
-    errdefer allocator.destroy(self);
+    var initialized = false;
+    errdefer if (initialized) self.interface.destroy(allocator) else allocator.destroy(self);
 
     var interface = try Interface.initGraphics(device, allocator, cache, info);
 
@@ -154,7 +156,7 @@ pub fn createGraphics(device: *base.Device, allocator: std.mem.Allocator, cache:
         .runtimes_allocator = .init(device_allocator),
         .stages = std.EnumMap(Stages, Shader).init(.{}),
     };
-    errdefer self.runtimes_allocator.deinit();
+    initialized = true;
     const runtimes_allocator = self.runtimes_allocator.allocator();
 
     const instance: *SoftInstance = @alignCast(@fieldParentPtr("interface", device.instance));

src/soft/SoftQueue.zig

@@ -68,11 +68,11 @@ pub fn bindSparse(interface: *Interface, info: []const vk.BindSparseInfo, fence:
 pub fn submit(interface: *Interface, infos: []Interface.SubmitInfo, p_fence: ?*base.Fence) VkError!void {
     const self: *Self = @alignCast(@fieldParentPtr("interface", interface));
     const soft_device: *SoftDevice = @alignCast(@fieldParentPtr("interface", interface.owner));
-    const allocator = soft_device.device_allocator.allocator();
     const io = interface.owner.io();
+    const allocator = soft_device.device_allocator.allocator();
 
-    const task_data = allocator.create(TaskData) catch return VkError.OutOfDeviceMemory;
+    const data = allocator.create(TaskData) catch return VkError.OutOfDeviceMemory;
-    errdefer allocator.destroy(task_data);
+    errdefer allocator.destroy(data);
 
     var cloned_infos = try cloneSubmitInfos(allocator, infos);
     errdefer deinitSubmitInfos(allocator, &cloned_infos);
@@ -87,7 +87,7 @@ pub fn submit(interface: *Interface, infos: []Interface.SubmitInfo, p_fence: ?*b
         break :blk seq;
     };
 
-    task_data.* = .{
+    data.* = .{
         .queue = self,
         .soft_device = soft_device,
         .sequence = sequence,
@@ -95,7 +95,7 @@ pub fn submit(interface: *Interface, infos: []Interface.SubmitInfo, p_fence: ?*b
         .fence = p_fence,
     };
 
-    self.group.async(io, Self.taskRunner, .{task_data});
+    self.group.async(io, taskRunner, .{data});
 }
 
 pub fn waitIdle(interface: *Interface) VkError!void {
@@ -115,7 +115,7 @@ fn executeSubmitInfo(soft_device: *SoftDevice, info: Interface.SubmitInfo) VkErr
 
     for (info.command_buffers.items) |command_buffer| {
         const soft_command_buffer: *SoftCommandBuffer = @alignCast(@fieldParentPtr("interface", command_buffer));
-        soft_command_buffer.execute(&execution_device);
+        try soft_command_buffer.execute(&execution_device);
     }
 
     for (info.signal_semaphores.items) |semaphore| {
@@ -126,6 +126,7 @@ fn executeSubmitInfo(soft_device: *SoftDevice, info: Interface.SubmitInfo) VkErr
 fn taskRunner(data: *TaskData) void {
     const io = data.queue.interface.owner.io();
     const allocator = data.soft_device.device_allocator.allocator();
+
     defer {
         deinitSubmitInfos(allocator, &data.infos);
         allocator.destroy(data);
@@ -140,18 +141,13 @@ fn taskRunner(data: *TaskData) void {
         }
     }
 
-    var submit_err: ?VkError = null;
     for (data.infos.items) |info| {
         executeSubmitInfo(data.soft_device, info) catch |err| {
-            submit_err = err;
+            std.log.scoped(.SoftQueue).err("Command buffer execution failed with '{s}'", .{@errorName(err)});
             break;
         };
     }
 
-    if (submit_err) |err| {
-        std.log.scoped(.SoftQueue).err("Queue submit failed with '{s}'", .{@errorName(err)});
-    }
-
     if (data.fence) |fence| {
         fence.signal() catch |err| {
             std.log.scoped(.SoftQueue).err("Queue submit fence signal failed with '{s}'", .{@errorName(err)});
@@ -159,9 +155,10 @@ fn taskRunner(data: *TaskData) void {
     }
 
     data.queue.mutex.lock(io) catch return;
+    defer data.queue.mutex.unlock(io);
+
     data.queue.executing_sequence += 1;
     data.queue.condition.broadcast(io);
-    data.queue.mutex.unlock(io);
 }
 
 fn cloneSubmitInfos(allocator: std.mem.Allocator, infos: []Interface.SubmitInfo) VkError!std.ArrayList(Interface.SubmitInfo) {

src/soft/SoftShaderModule.zig

@@ -14,7 +14,6 @@ pub const Interface = base.ShaderModule;
 
 interface: Interface,
 module: spv.Module,
-module_allocator: std.heap.ArenaAllocator,
 
 /// Pipelines need SPIR-V module reference so shader module may not
 /// be destroy on call to `vkDestroyShaderModule`
@@ -29,10 +28,6 @@ pub fn create(device: *base.Device, allocator: std.mem.Allocator, info: *const v
     const soft_device: *SoftDevice = @alignCast(@fieldParentPtr("interface", device));
     const device_allocator = soft_device.device_allocator.allocator();
 
-    var module_allocator_arena: std.heap.ArenaAllocator = .init(device_allocator);
-    errdefer module_allocator_arena.deinit();
-    const module_allocator = module_allocator_arena.allocator();
-
     interface.vtable = &.{
         .destroy = destroy,
     };
@@ -41,7 +36,7 @@ pub fn create(device: *base.Device, allocator: std.mem.Allocator, info: *const v
 
     self.* = .{
         .interface = interface,
-        .module = spv.Module.init(module_allocator, code, .{
+        .module = spv.Module.init(device_allocator, code, .{
             .use_simd_vectors_specializations = base.config.shaders_simd,
         }) catch |err| switch (err) {
             spv.Module.ModuleError.OutOfMemory => return VkError.OutOfHostMemory,
@@ -55,9 +50,9 @@ pub fn create(device: *base.Device, allocator: std.mem.Allocator, info: *const v
                 return VkError.ValidationFailed;
             },
         },
-        .module_allocator = module_allocator_arena,
         .ref_count = std.atomic.Value(usize).init(1),
     };
+
     return self;
 }
 
@@ -67,7 +62,11 @@ pub fn destroy(interface: *Interface, allocator: std.mem.Allocator) void {
 }
 
 pub fn drop(self: *Self, allocator: std.mem.Allocator) void {
-    self.module_allocator.deinit();
+    const soft_device: *SoftDevice = @alignCast(@fieldParentPtr("interface", self.interface.owner));
+    const device_allocator = soft_device.device_allocator.allocator();
+
+    self.module.deinit(device_allocator);
+
     allocator.destroy(self);
 }
 

src/soft/device/blitter.zig

@@ -683,6 +683,12 @@ pub fn readFloat4(map: []const u8, src_format: vk.Format) F32x4 {
             c[1] = std.mem.bytesToValue(f32, map[4..]);
         },
 
+        .r32g32b32_sfloat => {
+            c[0] = std.mem.bytesToValue(f32, map[0..]);
+            c[1] = std.mem.bytesToValue(f32, map[4..]);
+            c[2] = std.mem.bytesToValue(f32, map[8..]);
+        },
+
         .d32_sfloat,
         .r32_sfloat,
         => c[0] = std.mem.bytesToValue(f32, map),
@@ -1190,6 +1196,14 @@ pub fn readInt4(map: []const u8, src_format: vk.Format) U32x4 {
             c[1] = std.mem.bytesToValue(u32, map[4..]);
         },
 
+        .r32g32b32_sint,
+        .r32g32b32_uint,
+        => {
+            c[0] = std.mem.bytesToValue(u32, map[0..]);
+            c[1] = std.mem.bytesToValue(u32, map[4..]);
+            c[2] = std.mem.bytesToValue(u32, map[8..]);
+        },
+
         .r8g8b8a8_uint,
         => {
             c[0] = map[0];

src/soft/device/fragment.zig

@@ -13,15 +13,51 @@ const VkError = base.VkError;
 const SpvRuntimeError = spv.Runtime.RuntimeError;
 const INTERFACE_BLOB_PADDING = @sizeOf(zm.F32x4);
 
+pub const DerivativeInputs = struct {
+    dx: [spv.SPIRV_MAX_OUTPUT_LOCATIONS]VertexInterpolationLocation,
+    dy: [spv.SPIRV_MAX_OUTPUT_LOCATIONS]VertexInterpolationLocation,
+};
+
+pub fn shaderUsesDerivatives(code: []const spv.SpvWord) bool {
+    var i: usize = 5;
+    while (i < code.len) {
+        const opcode_data = code[i];
+        const word_count = (opcode_data & (~spv.spv.SpvOpCodeMask)) >> spv.spv.SpvWordCountShift;
+        if (word_count == 0)
+            return false;
+
+        const opcode = opcode_data & spv.spv.SpvOpCodeMask;
+        switch (opcode) {
+            @intFromEnum(spv.spv.SpvOp.DPdx),
+            @intFromEnum(spv.spv.SpvOp.DPdy),
+            @intFromEnum(spv.spv.SpvOp.DPdxFine),
+            @intFromEnum(spv.spv.SpvOp.DPdyFine),
+            @intFromEnum(spv.spv.SpvOp.DPdxCoarse),
+            @intFromEnum(spv.spv.SpvOp.DPdyCoarse),
+            => return true,
+            else => {},
+        }
+
+        i += word_count;
+    }
+    return false;
+}
+
 pub fn shaderInvocation(
     allocator: std.mem.Allocator,
     draw_call: *Renderer.DrawCall,
     batch_id: usize,
     position: zm.F32x4,
     inputs: [spv.SPIRV_MAX_OUTPUT_LOCATIONS]VertexInterpolationLocation,
+    derivative_inputs: ?DerivativeInputs,
 ) SpvRuntimeError![spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(zm.F32x4)]u8 {
     var fragment_inputs = inputs;
     errdefer freeOwnedInputs(allocator, fragment_inputs);
+    const derivatives = derivative_inputs;
+    errdefer if (derivatives) |owned_derivatives| {
+        freeOwnedInputs(allocator, owned_derivatives.dx);
+        freeOwnedInputs(allocator, owned_derivatives.dy);
+    };
 
     const io = draw_call.renderer.device.interface.io();
 
@@ -66,6 +102,13 @@ pub fn shaderInvocation(
 
             if (input.blob.len != 0) {
                 try rt.writeInput(input.blob, result_word);
+                if (derivatives) |derivative| {
+                    const dx = derivative.dx[location][component];
+                    const dy = derivative.dy[location][component];
+                    if (dx.blob.len != 0 and dy.blob.len != 0) {
+                        try rt.setDerivativeFromMemory(allocator, result_word, dx.blob, dy.blob);
+                    }
+                }
             }
         }
     }
@@ -81,8 +124,7 @@ pub fn shaderInvocation(
         else => return err,
     };
 
-    var outputs: [spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(zm.F32x4)]u8 = undefined;
+    var outputs = std.mem.zeroes([spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(zm.F32x4)]u8);
-    @memset(std.mem.asBytes(&outputs), 0);
 
     for (0..spv.SPIRV_MAX_OUTPUT_LOCATIONS) |location| {
         var has_split_components = false;
@@ -117,6 +159,10 @@ pub fn shaderInvocation(
 
     try rt.flushDescriptorSets(allocator);
     freeOwnedInputs(allocator, fragment_inputs);
+    if (derivatives) |owned_derivatives| {
+        freeOwnedInputs(allocator, owned_derivatives.dx);
+        freeOwnedInputs(allocator, owned_derivatives.dy);
+    }
 
     return outputs;
 }

src/soft/device/rasterizer.zig

@@ -304,8 +304,7 @@ fn clipTransformAndRasterizePoint(
             if (!common.scissorContainsPixel(draw_call.scissor, px, py))
                 continue;
 
-            var outputs: [spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(zm.F32x4)]u8 = undefined;
+            var outputs = std.mem.zeroes([spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(zm.F32x4)]u8);
-            @memset(std.mem.asBytes(&outputs), 0);
             if (has_fragment_shader) {
                 outputs = fragment.shaderInvocation(
                     allocator,
@@ -313,6 +312,7 @@ fn clipTransformAndRasterizePoint(
                     0,
                     zm.f32x4(@floatFromInt(px), @floatFromInt(py), transformed.position[2], 1.0),
                     try common.interpolateVertexOutputs(allocator, &transformed, &transformed, &transformed, 1.0, 0.0, 0.0),
+                    null,
                 ) catch |err| {
                     std.log.scoped(.@"Fragment stage").err("catched a '{s}'", .{@errorName(err)});
                     if (comptime base.config.logs == .verbose) {

src/soft/device/rasterizer/bresenham.zig

@@ -152,8 +152,7 @@ inline fn run(data: RunData) !void {
         const t = @as(f32, @floatFromInt(step)) / @as(f32, @floatFromInt(@max(data.d_x, 1)));
         const z = ((1.0 - t) * data.start_vertex.position[2]) + (t * data.end_vertex.position[2]);
 
-        var outputs: [spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(F32x4)]u8 = undefined;
+        var outputs = std.mem.zeroes([spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(F32x4)]u8);
-        @memset(std.mem.asBytes(&outputs), 0);
         if (data.has_fragment_shader) {
             outputs = fragment.shaderInvocation(
                 data.allocator,
@@ -161,6 +160,7 @@ inline fn run(data: RunData) !void {
                 data.batch_id,
                 zm.f32x4(@floatFromInt(pixel_x), @floatFromInt(pixel_y), z, 1.0),
                 try common.interpolateLineOutputs(data.allocator, data.start_vertex, data.end_vertex, t),
+                null,
             ) catch |err| {
                 std.log.scoped(.@"Fragment stage").err("catched a '{s}'", .{@errorName(err)});
                 if (comptime base.config.logs == .verbose) {

src/soft/device/rasterizer/common.zig

@@ -226,6 +226,58 @@ pub fn interpolateLineOutputs(
     return interpolateVertexOutputs(allocator, v0, v1, v0, 1.0 - t, t, 0.0);
 }
 
+pub fn interpolateVertexOutputDerivatives(
+    allocator: std.mem.Allocator,
+    v0: *const Renderer.Vertex,
+    v1: *const Renderer.Vertex,
+    v2: *const Renderer.Vertex,
+    db0: f32,
+    db1: f32,
+    db2: f32,
+) VkError![spv.SPIRV_MAX_OUTPUT_LOCATIONS]VertexInterpolationLocation {
+    var inputs = [_]VertexInterpolationLocation{[_]VertexInterpolation{.{
+        .blob = &.{},
+        .size = 0,
+        .free_responsability = false,
+    }} ** 4} ** spv.SPIRV_MAX_OUTPUT_LOCATIONS;
+
+    for (0..spv.SPIRV_MAX_OUTPUT_LOCATIONS) |location| {
+        for (0..4) |component| {
+            const out0 = v0.outputs[location][component] orelse continue;
+            const out1 = v1.outputs[location][component] orelse continue;
+            const out2 = v2.outputs[location][component] orelse continue;
+
+            const len = @min(out0.size, out1.size, out2.size);
+            if (len == 0)
+                continue;
+
+            const input = allocator.alloc(u8, len + @sizeOf(F32x4)) catch return VkError.OutOfDeviceMemory;
+            @memset(input, 0);
+
+            if (out0.interpolation_type != .flat) {
+                var byte_index: usize = 0;
+                while (byte_index + @sizeOf(F32x4) <= len) : (byte_index += @sizeOf(F32x4)) {
+                    const value0 = std.mem.bytesToValue(F32x4, out0.blob[byte_index..]);
+                    const value1 = std.mem.bytesToValue(F32x4, out1.blob[byte_index..]);
+                    const value2 = std.mem.bytesToValue(F32x4, out2.blob[byte_index..]);
+                    base.utils.writePacked(F32x4, input[byte_index..], interpolateF32x4(value0, value1, value2, db0, db1, db2));
+                }
+
+                while (byte_index + @sizeOf(f32) <= len) : (byte_index += @sizeOf(f32)) {
+                    const value0 = std.mem.bytesToValue(f32, out0.blob[byte_index..]);
+                    const value1 = std.mem.bytesToValue(f32, out1.blob[byte_index..]);
+                    const value2 = std.mem.bytesToValue(f32, out2.blob[byte_index..]);
+                    base.utils.writePacked(f32, input[byte_index..], (value0 * db0) + (value1 * db1) + (value2 * db2));
+                }
+            }
+
+            inputs[location][component] = .{ .blob = input, .size = len, .free_responsability = true };
+        }
+    }
+
+    return inputs;
+}
+
 inline fn interpolateF32x4(value0: F32x4, value1: F32x4, value2: F32x4, b0: f32, b1: f32, b2: f32) F32x4 {
     return (value0 * zm.f32x4s(b0)) + (value1 * zm.f32x4s(b1)) + (value2 * zm.f32x4s(b2));
 }

src/soft/device/rasterizer/edge_function.zig

@@ -30,6 +30,7 @@ const RunData = struct {
     stencil_attachment_access: ?*common.RenderTargetAccess,
     front_face: bool,
     has_fragment_shader: bool,
+    fragment_uses_derivatives: bool,
 };
 
 pub fn drawTriangle(
@@ -56,6 +57,10 @@ pub fn drawTriangle(
 
     const pipeline = draw_call.renderer.state.pipeline orelse return;
     const fragment_stage = pipeline.stages.getPtr(.fragment);
+    const fragment_uses_derivatives = if (fragment_stage) |stage|
+        fragment.shaderUsesDerivatives(stage.module.module.code)
+    else
+        false;
     const runtimes_count = if (fragment_stage) |stage| stage.runtimes.len else 1;
     if (runtimes_count == 0)
         return;
@@ -106,6 +111,7 @@ pub fn drawTriangle(
                 .stencil_attachment_access = stencil_attachment_access,
                 .front_face = front_face,
                 .has_fragment_shader = fragment_stage != null,
+                .fragment_uses_derivatives = fragment_uses_derivatives,
             };
 
             draw_call.rasterizer_wait_group.async(io, runWrapper, .{run_data});
@@ -171,15 +177,49 @@ inline fn run(data: RunData) !void {
             const b2 = w2 / data.area;
             const z = (b0 * data.v0.position[2]) + (b1 * data.v1.position[2]) + (b2 * data.v2.position[2]);
 
-            var outputs: [spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(F32x4)]u8 = undefined;
+            var outputs = std.mem.zeroes([spv.SPIRV_MAX_OUTPUT_LOCATIONS][@sizeOf(F32x4)]u8);
-            @memset(std.mem.asBytes(&outputs), 0);
             if (data.has_fragment_shader) {
+                const inputs = try common.interpolateVertexOutputs(data.allocator, &data.v0, &data.v1, &data.v2, b0, b1, b2);
+                const derivative_inputs: ?fragment.DerivativeInputs = if (data.fragment_uses_derivatives) blk: {
+                    var derivatives: fragment.DerivativeInputs = undefined;
+
+                    const p_dx = zm.f32x4(@as(f32, @floatFromInt(x)) + 1.5, @as(f32, @floatFromInt(y)) + 0.5, 0.0, 1.0);
+                    const dx_w0 = edgeFunction(data.v1.position, data.v2.position, p_dx);
+                    const dx_w1 = edgeFunction(data.v2.position, data.v0.position, p_dx);
+                    const dx_w2 = edgeFunction(data.v0.position, data.v1.position, p_dx);
+                    derivatives.dx = try common.interpolateVertexOutputDerivatives(
+                        data.allocator,
+                        &data.v0,
+                        &data.v1,
+                        &data.v2,
+                        (dx_w0 / data.area) - b0,
+                        (dx_w1 / data.area) - b1,
+                        (dx_w2 / data.area) - b2,
+                    );
+
+                    const p_dy = zm.f32x4(@as(f32, @floatFromInt(x)) + 0.5, @as(f32, @floatFromInt(y)) + 1.5, 0.0, 1.0);
+                    const dy_w0 = edgeFunction(data.v1.position, data.v2.position, p_dy);
+                    const dy_w1 = edgeFunction(data.v2.position, data.v0.position, p_dy);
+                    const dy_w2 = edgeFunction(data.v0.position, data.v1.position, p_dy);
+                    derivatives.dy = try common.interpolateVertexOutputDerivatives(
+                        data.allocator,
+                        &data.v0,
+                        &data.v1,
+                        &data.v2,
+                        (dy_w0 / data.area) - b0,
+                        (dy_w1 / data.area) - b1,
+                        (dy_w2 / data.area) - b2,
+                    );
+                    break :blk derivatives;
+                } else null;
+
                 outputs = fragment.shaderInvocation(
                     data.allocator,
                     data.draw_call,
                     data.batch_id,
                     zm.f32x4(@floatFromInt(x), @floatFromInt(y), z, 1.0),
-                    try common.interpolateVertexOutputs(data.allocator, &data.v0, &data.v1, &data.v2, b0, b1, b2),
+                    inputs,
+                    derivative_inputs,
                 ) catch |err| {
                     std.log.scoped(.@"Fragment stage").err("catched a '{s}'", .{@errorName(err)});
                     if (comptime base.config.logs == .verbose) {

src/soft/device/vertex_dispatcher.zig

@@ -9,6 +9,7 @@ const SpvRuntimeError = spv.Runtime.RuntimeError;
 
 const Renderer = @import("Renderer.zig");
 const SoftPipeline = @import("../SoftPipeline.zig");
+const blitter = @import("blitter.zig");
 
 const VkError = base.VkError;
 const INTERFACE_BLOB_PADDING = @sizeOf(F32x4);
@@ -129,6 +130,9 @@ fn setupBuiltins(rt: *spv.Runtime, vertex_index_u32: u32, instance_index: usize)
 }
 
 fn writeVertexInput(rt: *spv.Runtime, allocator: std.mem.Allocator, raw_input: []const u8, format: vk.Format, location: u32) !void {
+    var expanded_input: [@sizeOf(F32x4)]u8 = @splat(0);
+    const expanded_slice = expandedVertexInput(raw_input, format, &expanded_input);
+
     var has_split_components = false;
     for (1..4) |component| {
         _ = rt.getResultByLocationComponent(location, @intCast(component), .input) catch |err| switch (err) {
@@ -148,8 +152,8 @@ fn writeVertexInput(rt: *spv.Runtime, allocator: std.mem.Allocator, raw_input: [
             const input_memory_size = try rt.getResultMemorySize(result_word);
             const raw_offset = component * @sizeOf(f32);
 
-            if (raw_offset + input_memory_size <= raw_input.len) {
+            if (raw_offset + input_memory_size <= expanded_slice.len) {
-                try rt.writeInput(raw_input[raw_offset .. raw_offset + input_memory_size], result_word);
+                try rt.writeInput(expanded_slice[raw_offset .. raw_offset + input_memory_size], result_word);
                 continue;
             }
 
@@ -179,8 +183,8 @@ fn writeVertexInput(rt: *spv.Runtime, allocator: std.mem.Allocator, raw_input: [
 
     const input_memory_size = try rt.getInputLocationMemorySize(location);
 
-    if (raw_input.len >= input_memory_size) {
+    if (expanded_slice.len >= input_memory_size) {
-        try rt.writeInputLocation(raw_input[0..input_memory_size], location);
+        try rt.writeInputLocation(expanded_slice[0..input_memory_size], location);
         return;
     }
 
@@ -188,12 +192,24 @@ fn writeVertexInput(rt: *spv.Runtime, allocator: std.mem.Allocator, raw_input: [
     defer allocator.free(input);
 
     @memset(input, 0);
-    @memcpy(input[0..raw_input.len], raw_input);
+    @memcpy(input[0..expanded_slice.len], expanded_slice);
 
-    fillMissingVertexComponents(input, raw_input.len, format);
+    fillMissingVertexComponents(input, expanded_slice.len, format);
     try rt.writeInputLocation(input, location);
 }
 
+fn expandedVertexInput(raw_input: []const u8, format: vk.Format, expanded: *[@sizeOf(F32x4)]u8) []const u8 {
+    if (base.format.isUnnormalizedInteger(format)) {
+        const value = blitter.readInt4(raw_input, format);
+        @memcpy(expanded, std.mem.asBytes(&value));
+        return expanded;
+    }
+
+    const value = blitter.readFloat4(raw_input, format);
+    @memcpy(expanded, std.mem.asBytes(&value));
+    return expanded;
+}
+
 fn fillMissingVertexComponents(input: []u8, raw_input_size: usize, format: vk.Format) void {
     if (input.len < @sizeOf(F32x4) or raw_input_size > 3 * @sizeOf(f32))
         return;

src/soft/lib.zig

@@ -41,6 +41,7 @@ pub const DRIVER_NAME = "Soft";
 pub const VULKAN_VERSION = vk.makeApiVersion(0, 1, 0, 0);
 pub const DRIVER_VERSION = vk.makeApiVersion(0, 0, 0, 1);
 pub const DEVICE_ID = 0x600DCAFE;
+pub const PIPELINE_CACHE_UUID: [vk.UUID_SIZE]u8 = "ApeSoftCacheUUID".*;
 
 /// Generic system memory.
 pub const MEMORY_TYPE_GENERIC_BIT = 0;

src/vulkan/CommandBuffer.zig

@@ -32,6 +32,7 @@ owner: *Device,
 pool: *CommandPool,
 state: State,
 begin_info: ?vk.CommandBufferBeginInfo,
+usage_flags: vk.CommandBufferUsageFlags,
 host_allocator: VulkanAllocator,
 state_mutex: std.Io.Mutex,
 
@@ -94,6 +95,7 @@ pub fn init(device: *Device, allocator: std.mem.Allocator, info: *const vk.Comma
         .pool = try NonDispatchable(CommandPool).fromHandleObject(info.command_pool),
         .state = .Initial,
         .begin_info = null,
+        .usage_flags = .{},
         .host_allocator = VulkanAllocator.from(allocator).cloneWithScope(.object),
         .state_mutex = .init,
         .vtable = undefined,
@@ -120,7 +122,7 @@ pub inline fn destroy(self: *Self, allocator: std.mem.Allocator) void {
 pub fn begin(self: *Self, info: *const vk.CommandBufferBeginInfo) VkError!void {
     const implicitly_reset = self.state == .Executable;
 
-    self.transitionState(.Recording, &.{ .Initial, .Executable }) catch return VkError.ValidationFailed;
+    self.transitionState(.Recording, &.{ .Initial, .Executable, .Invalid }) catch return VkError.ValidationFailed;
     if (implicitly_reset) {
         try self.dispatch_table.reset(self, .{});
         self.begin_info = null;
@@ -128,12 +130,12 @@ pub fn begin(self: *Self, info: *const vk.CommandBufferBeginInfo) VkError!void {
 
     try self.dispatch_table.begin(self, info);
     self.begin_info = info.*;
+    self.usage_flags = info.flags;
 }
 
 pub fn end(self: *Self) VkError!void {
     self.transitionState(.Executable, &.{.Recording}) catch return VkError.ValidationFailed;
     try self.dispatch_table.end(self);
-    self.begin_info = null;
 }
 
 pub fn reset(self: *Self, flags: vk.CommandBufferResetFlags) VkError!void {
@@ -141,26 +143,28 @@ pub fn reset(self: *Self, flags: vk.CommandBufferResetFlags) VkError!void {
         return VkError.ValidationFailed;
     }
 
+    try self.resetFromPool(flags);
+}
+
+pub fn resetFromPool(self: *Self, flags: vk.CommandBufferResetFlags) VkError!void {
     self.transitionState(.Initial, &.{ .Initial, .Recording, .Executable, .Invalid }) catch return VkError.ValidationFailed;
     try self.dispatch_table.reset(self, flags);
+    self.begin_info = null;
+    self.usage_flags = .{};
 }
 
 pub fn submit(self: *Self) VkError!void {
-    if (self.begin_info) |begin_info| {
+    if (!self.usage_flags.simultaneous_use_bit) {
-        if (!begin_info.flags.simultaneous_use_bit) {
+        self.transitionState(.Pending, &.{.Executable}) catch return VkError.ValidationFailed;
-            self.transitionState(.Pending, &.{.Executable}) catch return VkError.ValidationFailed;
+        return;
-            return;
-        }
     }
     self.transitionState(.Pending, &.{ .Pending, .Executable }) catch return VkError.ValidationFailed;
 }
 
 pub fn finish(self: *Self) VkError!void {
-    if (self.begin_info) |begin_info| {
+    if (self.usage_flags.one_time_submit_bit) {
-        if (!begin_info.flags.one_time_submit_bit) {
+        self.transitionState(.Invalid, &.{.Pending}) catch return VkError.ValidationFailed;
-            self.transitionState(.Invalid, &.{.Pending}) catch return VkError.ValidationFailed;
+        return;
-            return;
-        }
     }
     self.transitionState(.Executable, &.{.Pending}) catch return VkError.ValidationFailed;
 }

src/vulkan/CommandPool.zig

@@ -55,10 +55,23 @@ pub fn allocateCommandBuffers(self: *Self, info: *const vk.CommandBufferAllocate
         while (self.buffers.capacity < self.buffers.items.len + info.command_buffer_count) {
             self.buffers.ensureUnusedCapacity(allocator, BUFFER_POOL_BASE_CAPACITY) catch return VkError.OutOfHostMemory;
         }
+        const original_len = self.buffers.items.len;
+        errdefer {
+            for (self.buffers.items[original_len..]) |dis_cmd| {
+                dis_cmd.intrusiveDestroy(allocator);
+            }
+            self.buffers.shrinkRetainingCapacity(original_len);
+        }
         for (0..info.command_buffer_count) |_| {
             const cmd = try self.vtable.createCommandBuffer(self, allocator, info);
+            var cmd_owned = true;
+            errdefer if (cmd_owned) cmd.destroy(allocator);
             const dis_cmd = try Dispatchable(CommandBuffer).wrap(allocator, cmd);
+            cmd_owned = false;
+            var dis_cmd_owned = true;
+            errdefer if (dis_cmd_owned) dis_cmd.intrusiveDestroy(allocator);
             self.buffers.appendAssumeCapacity(dis_cmd);
+            dis_cmd_owned = false;
         }
     }
 
@@ -97,15 +110,7 @@ pub fn reset(self: *Self, flags: vk.CommandPoolResetFlags) VkError!void {
 
     self.first_free_buffer_index = 0;
 
-    if (flags.release_resources_bit) {
+    for (self.buffers.items) |dis_cmd| {
-        const allocator = self.host_allocator.allocator();
+        _ = dis_cmd.object.resetFromPool(.{ .release_resources_bit = flags.release_resources_bit }) catch {};
-        for (self.buffers.items) |dis_cmd| {
-            dis_cmd.intrusiveDestroy(allocator);
-        }
-        self.buffers.clearRetainingCapacity();
-    } else {
-        for (self.buffers.items) |dis_cmd| {
-            _ = dis_cmd.object.reset(.{ .release_resources_bit = true }) catch {};
-        }
     }
 }

src/vulkan/Device.zig

@@ -41,6 +41,7 @@ instance: *Instance,
 physical_device: *const PhysicalDevice,
 queues: std.AutoArrayHashMapUnmanaged(u32, std.ArrayList(*Dispatchable(Queue))),
 host_allocator: VulkanAllocator,
+khr_swapchain_enabled: bool,
 
 dispatch_table: *const DispatchTable,
 vtable: *const VTable,
@@ -75,17 +76,28 @@ pub const DispatchTable = struct {
 };
 
 pub fn init(allocator: std.mem.Allocator, instance: *Instance, physical_device: *const PhysicalDevice, info: *const vk.DeviceCreateInfo) VkError!Self {
-    _ = info;
     return .{
         .instance = instance,
         .physical_device = physical_device,
         .queues = .empty,
         .host_allocator = VulkanAllocator.from(allocator).cloneWithScope(.object),
+        .khr_swapchain_enabled = isExtensionEnabled(info, vk.extensions.khr_swapchain.name),
         .dispatch_table = undefined,
         .vtable = undefined,
     };
 }
 
+fn isExtensionEnabled(info: *const vk.DeviceCreateInfo, extension_name: []const u8) bool {
+    if (info.enabled_extension_count == 0) return false;
+    const names = info.pp_enabled_extension_names orelse return false;
+    for (0..info.enabled_extension_count) |i| {
+        if (std.mem.eql(u8, std.mem.span(names[i]), extension_name)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 pub fn createQueues(self: *Self, allocator: std.mem.Allocator, info: *const vk.DeviceCreateInfo) VkError!void {
     if (info.queue_create_info_count == 0) {
         return;
@@ -102,8 +114,10 @@ pub fn createQueues(self: *Self, allocator: std.mem.Allocator, info: *const vk.D
         }
 
         const queue = try self.vtable.createQueue(allocator, self, queue_info.queue_family_index, @intCast(family_ptr.items.len), queue_info.flags);
+        errdefer self.vtable.destroyQueue(queue, allocator) catch {};
 
         const dispatchable_queue = try Dispatchable(Queue).wrap(allocator, queue);
+        errdefer dispatchable_queue.destroy(allocator);
         family_ptr.append(allocator, dispatchable_queue) catch return VkError.OutOfHostMemory;
     }
 }

src/vulkan/Image.zig

@@ -63,7 +63,7 @@ pub inline fn destroy(self: *Self, allocator: std.mem.Allocator) void {
 
 pub fn bindMemory(self: *Self, memory: *DeviceMemory, offset: vk.DeviceSize) VkError!void {
     const image_size = try self.getTotalSize();
-    if (offset >= image_size or !self.allowed_memory_types.isSet(memory.memory_type_index)) {
+    if (offset + image_size > memory.size or !self.allowed_memory_types.isSet(memory.memory_type_index)) {
         return VkError.ValidationFailed;
     }
     self.memory = memory;

src/vulkan/Instance.zig

@@ -2,6 +2,7 @@ const std = @import("std");
 const builtin = @import("builtin");
 const vk = @import("vulkan");
 const config = @import("lib.zig").config;
+const utils = @import("utils.zig");
 
 const VkError = @import("error_set.zig").VkError;
 const Dispatchable = @import("Dispatchable.zig").Dispatchable;
@@ -50,6 +51,41 @@ pub fn init(allocator: std.mem.Allocator, infos: *const vk.InstanceCreateInfo) V
     };
 }
 
+pub fn validateCreateInfo(info: *const vk.InstanceCreateInfo) VkError!void {
+    if (info.p_application_info) |application_info| {
+        const requested: vk.Version = @bitCast(application_info.api_version);
+        const supported: vk.Version = if (comptime builtin.is_test)
+            vk.API_VERSION_1_0
+        else
+            @bitCast(root.VULKAN_VERSION);
+        if (requested.variant != 0 or requested.major > supported.major or (requested.major == supported.major and requested.minor > supported.minor)) {
+            return VkError.IncompatibleDriver;
+        }
+    }
+
+    if (info.enabled_layer_count != 0) {
+        const names = info.pp_enabled_layer_names orelse return VkError.LayerNotPresent;
+        for (0..info.enabled_layer_count) |i| {
+            _ = utils.boundedName(names[i], vk.MAX_EXTENSION_NAME_SIZE) orelse return VkError.LayerNotPresent;
+            return VkError.LayerNotPresent;
+        }
+    }
+
+    if (info.enabled_extension_count != 0) {
+        const names = info.pp_enabled_extension_names orelse return VkError.ExtensionNotPresent;
+        const supported_extensions = if (comptime builtin.is_test)
+            &[_]vk.ExtensionProperties{}
+        else
+            root.Instance.EXTENSIONS[0..];
+        for (0..info.enabled_extension_count) |i| {
+            const name = utils.boundedName(names[i], vk.MAX_EXTENSION_NAME_SIZE) orelse return VkError.ExtensionNotPresent;
+            if (!utils.isSupportedExtension(name, supported_extensions)) {
+                return VkError.ExtensionNotPresent;
+            }
+        }
+    }
+}
+
 /// Dummy to avoid compile error in tests and doc generation
 pub fn create(allocator: std.mem.Allocator, infos: *const vk.InstanceCreateInfo) VkError!*Self {
     _ = allocator;
@@ -64,11 +100,16 @@ pub fn deinit(self: *Self, allocator: std.mem.Allocator) VkError!void {
 
 pub fn enumerateLayerProperties(count: *u32, p_properties: ?[*]vk.LayerProperties) VkError!void {
     if (comptime !builtin.is_test and @hasDecl(root.Instance, "LAYERS")) {
-        count.* = root.Instance.LAYERS.len;
+        const available = root.Instance.LAYERS.len;
         if (p_properties) |properties| {
-            for (root.Instance.LAYERS, properties[0..]) |layer, *prop| {
+            const write_count = @min(count.*, available);
+            for (root.Instance.LAYERS[0..write_count], properties[0..write_count]) |layer, *prop| {
                 prop.* = layer;
             }
+            count.* = @intCast(write_count);
+            if (write_count < available) return VkError.Incomplete;
+        } else {
+            count.* = @intCast(available);
         }
     } else {
         count.* = 0;
@@ -81,11 +122,16 @@ pub fn enumerateExtensionProperties(layer_name: ?[]const u8, count: *u32, p_prop
     }
 
     if (comptime !builtin.is_test and @hasDecl(root.Instance, "EXTENSIONS")) {
-        count.* = root.Instance.EXTENSIONS.len;
+        const available = root.Instance.EXTENSIONS.len;
         if (p_properties) |properties| {
-            for (root.Instance.EXTENSIONS, properties[0..]) |ext, *prop| {
+            const write_count = @min(count.*, available);
+            for (root.Instance.EXTENSIONS[0..write_count], properties[0..write_count]) |ext, *prop| {
                 prop.* = ext;
             }
+            count.* = @intCast(write_count);
+            if (write_count < available) return VkError.Incomplete;
+        } else {
+            count.* = @intCast(available);
         }
     } else {
         count.* = 0;

src/vulkan/PhysicalDevice.zig

@@ -1,6 +1,7 @@
 const std = @import("std");
 const vk = @import("vulkan");
 const root = @import("lib.zig");
+const utils = @import("utils.zig");
 
 const Instance = @import("Instance.zig");
 const VkError = @import("error_set.zig").VkError;
@@ -64,6 +65,43 @@ pub inline fn createDevice(self: *Self, allocator: std.mem.Allocator, infos: *co
     return try self.dispatch_table.createDevice(self, allocator, infos);
 }
 
+pub fn validateCreateInfo(self: *const Self, allocator: std.mem.Allocator, info: *const vk.DeviceCreateInfo) VkError!void {
+    if (info.enabled_layer_count != 0) {
+        const names = info.pp_enabled_layer_names orelse return VkError.LayerNotPresent;
+        for (0..info.enabled_layer_count) |i| {
+            _ = utils.boundedName(names[i], vk.MAX_EXTENSION_NAME_SIZE) orelse return VkError.LayerNotPresent;
+            return VkError.LayerNotPresent;
+        }
+    }
+
+    if (info.enabled_extension_count != 0) {
+        const names = info.pp_enabled_extension_names orelse return VkError.ExtensionNotPresent;
+
+        var available_count: u32 = 0;
+        try self.enumerateExtensionProperties(null, &available_count, null);
+        const supported_extensions = allocator.alloc(vk.ExtensionProperties, available_count) catch return VkError.OutOfHostMemory;
+        defer allocator.free(supported_extensions);
+
+        var written_count = available_count;
+        try self.enumerateExtensionProperties(null, &written_count, supported_extensions.ptr);
+
+        for (0..info.enabled_extension_count) |i| {
+            const name = utils.boundedName(names[i], vk.MAX_EXTENSION_NAME_SIZE) orelse return VkError.ExtensionNotPresent;
+            if (!utils.isSupportedExtension(name, supported_extensions[0..written_count])) {
+                return VkError.ExtensionNotPresent;
+            }
+        }
+    }
+
+    if (info.p_enabled_features) |requested_features| {
+        inline for (std.meta.fields(vk.PhysicalDeviceFeatures)) |field| {
+            if (@field(requested_features, field.name) == .true and @field(self.features, field.name) == .false) {
+                return VkError.FeatureNotPresent;
+            }
+        }
+    }
+}
+
 pub inline fn getFormatProperties(self: *Self, format: vk.Format) VkError!vk.FormatProperties {
     return try self.dispatch_table.getFormatProperties(self, format);
 }

src/vulkan/Pipeline.zig

@@ -93,6 +93,21 @@ pub fn initGraphics(device: *Device, allocator: std.mem.Allocator, cache: ?*Pipe
         }
     }
 
+    var binding_description: ?[]vk.VertexInputBindingDescription = null;
+    errdefer if (binding_description) |value| allocator.free(value);
+
+    var attribute_description: ?[]vk.VertexInputAttributeDescription = null;
+    errdefer if (attribute_description) |value| allocator.free(value);
+
+    var viewports: ?[]vk.Viewport = null;
+    errdefer if (viewports) |value| allocator.free(value);
+
+    var scissors: ?[]vk.Rect2D = null;
+    errdefer if (scissors) |value| allocator.free(value);
+
+    var color_attachments: ?[]vk.PipelineColorBlendAttachmentState = null;
+    errdefer if (color_attachments) |value| allocator.free(value);
+
     return .{
         .owner = device,
         .vtable = undefined,
@@ -105,7 +120,8 @@ pub fn initGraphics(device: *Device, allocator: std.mem.Allocator, cache: ?*Pipe
                     .binding_description = blk: {
                         if (info.p_vertex_input_state) |vertex_input_state| {
                             if (vertex_input_state.p_vertex_binding_descriptions) |vertex_binding_descriptions| {
-                                break :blk allocator.dupe(vk.VertexInputBindingDescription, vertex_binding_descriptions[0..vertex_input_state.vertex_binding_description_count]) catch return VkError.OutOfHostMemory;
+                                binding_description = allocator.dupe(vk.VertexInputBindingDescription, vertex_binding_descriptions[0..vertex_input_state.vertex_binding_description_count]) catch return VkError.OutOfHostMemory;
+                                break :blk binding_description;
                             }
                         } else {
                             return VkError.ValidationFailed;
@@ -115,7 +131,8 @@ pub fn initGraphics(device: *Device, allocator: std.mem.Allocator, cache: ?*Pipe
                     .attribute_description = blk: {
                         if (info.p_vertex_input_state) |vertex_input_state| {
                             if (vertex_input_state.p_vertex_attribute_descriptions) |vertex_attribute_descriptions| {
-                                break :blk allocator.dupe(vk.VertexInputAttributeDescription, vertex_attribute_descriptions[0..vertex_input_state.vertex_attribute_description_count]) catch return VkError.OutOfHostMemory;
+                                attribute_description = allocator.dupe(vk.VertexInputAttributeDescription, vertex_attribute_descriptions[0..vertex_input_state.vertex_attribute_description_count]) catch return VkError.OutOfHostMemory;
+                                break :blk attribute_description;
                             }
                         } else {
                             return VkError.ValidationFailed;
@@ -128,16 +145,20 @@ pub fn initGraphics(device: *Device, allocator: std.mem.Allocator, cache: ?*Pipe
                 .viewport_state = .{
                     .viewports = blk: {
                         if (info.p_viewport_state) |viewport_state| {
-                            if (viewport_state.p_viewports) |viewports| {
+                            if (viewport_state.p_viewports) |p_viewports| {
-                                break :blk allocator.dupe(vk.Viewport, viewports[0..viewport_state.viewport_count]) catch return VkError.OutOfHostMemory;
+                                const copy = allocator.dupe(vk.Viewport, p_viewports[0..viewport_state.viewport_count]) catch return VkError.OutOfHostMemory;
+                                viewports = copy;
+                                break :blk viewports;
                             }
                         }
                         break :blk null;
                     },
                     .scissor = blk: {
                         if (info.p_viewport_state) |viewport_state| {
-                            if (viewport_state.p_scissors) |scissors| {
+                            if (viewport_state.p_scissors) |p_scissors| {
-                                break :blk allocator.dupe(vk.Rect2D, scissors[0..viewport_state.scissor_count]) catch return VkError.OutOfHostMemory;
+                                const copy = allocator.dupe(vk.Rect2D, p_scissors[0..viewport_state.scissor_count]) catch return VkError.OutOfHostMemory;
+                                scissors = copy;
+                                break :blk scissors;
                             }
                         }
                         break :blk null;
@@ -152,10 +173,10 @@ pub fn initGraphics(device: *Device, allocator: std.mem.Allocator, cache: ?*Pipe
                 .color_blend = blk: {
                     if (info.p_color_blend_state) |state| {
                         break :blk .{
-                            .attachments = if (state.p_attachments) |attachments|
+                            .attachments = if (state.p_attachments) |attachments| blk_attachments: {
-                                allocator.dupe(vk.PipelineColorBlendAttachmentState, attachments[0..state.attachment_count]) catch return VkError.OutOfHostMemory
+                                color_attachments = allocator.dupe(vk.PipelineColorBlendAttachmentState, attachments[0..state.attachment_count]) catch return VkError.OutOfHostMemory;
-                            else
+                                break :blk_attachments color_attachments;
-                                null,
+                            } else null,
                             .constants = state.blend_constants,
                         };
                     }
@@ -205,6 +226,12 @@ pub inline fn destroy(self: *Self, allocator: std.mem.Allocator) void {
             if (graphics.input_assembly.attribute_description) |attribute_description| {
                 allocator.free(attribute_description);
             }
+            if (graphics.viewport_state.viewports) |viewports| {
+                allocator.free(viewports);
+            }
+            if (graphics.viewport_state.scissor) |scissor| {
+                allocator.free(scissor);
+            }
             if (graphics.color_blend.attachments) |attachments| {
                 allocator.free(attachments);
             }

src/vulkan/PipelineCache.zig

@@ -4,6 +4,7 @@ const vk = @import("vulkan");
 const NonDispatchable = @import("NonDispatchable.zig");
 
 const VkError = @import("error_set.zig").VkError;
+const root = @import("lib.zig");
 
 const Device = @import("Device.zig");
 
@@ -11,6 +12,7 @@ const Self = @This();
 pub const ObjectType: vk.ObjectType = .pipeline_cache;
 
 owner: *Device,
+data_available: bool,
 
 vtable: *const VTable,
 
@@ -18,11 +20,14 @@ pub const VTable = struct {
     destroy: *const fn (*Self, std.mem.Allocator) void,
 };
 
+pub const Header = vk.PipelineCacheHeaderVersionOne;
+
 pub fn init(device: *Device, allocator: std.mem.Allocator, info: *const vk.PipelineCacheCreateInfo) VkError!Self {
     _ = allocator;
-    _ = info;
+    const has_initial_data = info.initial_data_size != 0 or info.p_initial_data != null;
     return .{
         .owner = device,
+        .data_available = !has_initial_data or info.initial_data_size >= dataSize(),
         .vtable = undefined,
     };
 }
@@ -30,3 +35,44 @@ pub fn init(device: *Device, allocator: std.mem.Allocator, info: *const vk.Pipel
 pub inline fn destroy(self: *Self, allocator: std.mem.Allocator) void {
     self.vtable.destroy(self, allocator);
 }
+
+pub fn merge(self: *Self) VkError!void {
+    _ = self;
+}
+
+pub fn getData(self: *Self, data: ?[]u8) vk.Result {
+    if (!self.data_available) {
+        return .success;
+    }
+
+    const cache_header = self.header();
+    const bytes = std.mem.asBytes(&cache_header);
+
+    if (data) |dst| {
+        if (dst.len < bytes.len) {
+            return .incomplete;
+        }
+
+        @memcpy(dst[0..bytes.len], bytes);
+    }
+
+    return .success;
+}
+
+pub inline fn dataSize() usize {
+    return @sizeOf(Header);
+}
+
+pub inline fn availableDataSize(self: *const Self) usize {
+    return if (self.data_available) dataSize() else 0;
+}
+
+fn header(self: *const Self) Header {
+    return .{
+        .header_size = @sizeOf(Header),
+        .header_version = .one,
+        .vendor_id = @intCast(root.VULKAN_VENDOR_ID),
+        .device_id = self.owner.physical_device.props.device_id,
+        .pipeline_cache_uuid = self.owner.physical_device.props.pipeline_cache_uuid,
+    };
+}

src/vulkan/lib.zig

@@ -52,7 +52,9 @@ pub const ShaderModule = @import("ShaderModule.zig");
 pub const SurfaceKHR = @import("wsi/SurfaceKHR.zig");
 pub const SwapchainKHR = @import("wsi/SwapchainKHR.zig");
 
-pub const VULKAN_VENDOR_ID = 0x10008;
+// To be commented out when spec 1.4.354 is released
+// pub const VULKAN_VENDOR_ID: i32 = @intFromEnum(vk.VendorId.ape);
+pub const VULKAN_VENDOR_ID: i32 = 0x10008;
 
 /// Default driver name
 pub const DRIVER_NAME = "Unnamed Ape Driver";

src/vulkan/lib_vulkan.zig

@@ -64,6 +64,22 @@ inline fn notImplementedWarning() void {
     logger.fixme("function not yet implemented", .{});
 }
 
+fn isSwapchainDeviceFunction(name: []const u8) bool {
+    return std.mem.eql(u8, name, "vkAcquireNextImageKHR") or
+        std.mem.eql(u8, name, "vkCreateSwapchainKHR") or
+        std.mem.eql(u8, name, "vkDestroySwapchainKHR") or
+        std.mem.eql(u8, name, "vkGetSwapchainImagesKHR") or
+        std.mem.eql(u8, name, "vkQueuePresentKHR");
+}
+
+fn wrapNonDispatchable(comptime T: type, allocator: std.mem.Allocator, object: *T, comptime VkT: type) VkError!VkT {
+    const handle = NonDispatchable(T).wrap(allocator, object) catch |err| {
+        object.destroy(allocator);
+        return err;
+    };
+    return handle.toVkHandle(VkT);
+}
+
 fn functionMapEntryPoint(comptime name: []const u8) struct { []const u8, vk.PfnVoidFunction } {
     // Mapping 'vkFnName' to 'apeFnName'
     const ape_name = std.fmt.comptimePrint("ape{s}", .{name[2..]});
@@ -94,6 +110,8 @@ const instance_pfn_map = std.StaticStringMap(vk.PfnVoidFunction).initComptime(.{
     functionMapEntryPoint("vkCreateWaylandSurfaceKHR"),
     functionMapEntryPoint("vkDestroyInstance"),
     functionMapEntryPoint("vkDestroySurfaceKHR"),
+    functionMapEntryPoint("vkEnumeratePhysicalDeviceGroups"),
+    functionMapEntryPoint("vkEnumeratePhysicalDeviceGroupsKHR"),
     functionMapEntryPoint("vkEnumeratePhysicalDevices"),
     functionMapEntryPoint("vkGetDeviceProcAddr"),
 });
@@ -312,15 +330,23 @@ pub export fn apeCreateInstance(info: *const vk.InstanceCreateInfo, callbacks: ?
         return .error_validation_failed;
     }
     const allocator = VulkanAllocator.init(callbacks, .instance).allocator();
+    Instance.validateCreateInfo(info) catch |err| return toVkResult(err);
 
     var instance: *lib.Instance = undefined;
     if (!builtin.is_test) {
         // Will call impl instead of interface as root refs the impl module
         instance = root.Instance.create(allocator, info) catch |err| return toVkResult(err);
     }
-    instance.requestPhysicalDevices(allocator) catch |err| return toVkResult(err);
+    instance.requestPhysicalDevices(allocator) catch |err| {
+        if (!builtin.is_test) instance.deinit(allocator) catch {};
+        return toVkResult(err);
+    };
 
-    p_instance.* = (Dispatchable(Instance).wrap(allocator, instance) catch |err| return toVkResult(err)).toVkHandle(vk.Instance);
+    const dispatchable = Dispatchable(Instance).wrap(allocator, instance) catch |err| {
+        if (!builtin.is_test) instance.deinit(allocator) catch {};
+        return toVkResult(err);
+    };
+    p_instance.* = dispatchable.toVkHandle(vk.Instance);
     return .success;
 }
 
@@ -370,15 +396,63 @@ pub export fn apeEnumeratePhysicalDevices(p_instance: vk.Instance, count: *u32,
     defer entryPointEndLogTrace();
 
     const instance = Dispatchable(Instance).fromHandleObject(p_instance) catch |err| return toVkResult(err);
-    count.* = @intCast(instance.physical_devices.items.len);
+    const available = instance.physical_devices.items.len;
     if (p_devices) |devices| {
-        for (0..count.*) |i| {
+        const write_count = @min(count.*, available);
+        for (0..write_count) |i| {
             devices[i] = instance.physical_devices.items[i].toVkHandle(vk.PhysicalDevice);
         }
+        count.* = @intCast(write_count);
+        if (write_count < available) return .incomplete;
+    } else {
+        count.* = @intCast(available);
     }
     return .success;
 }
 
+pub export fn apeEnumeratePhysicalDeviceGroups(
+    p_instance: vk.Instance,
+    count: *u32,
+    p_groups: ?[*]vk.PhysicalDeviceGroupProperties,
+) callconv(vk.vulkan_call_conv) vk.Result {
+    entryPointBeginLogTrace(.vkEnumeratePhysicalDeviceGroups);
+    defer entryPointEndLogTrace();
+
+    const instance = Dispatchable(Instance).fromHandleObject(p_instance) catch |err| return toVkResult(err);
+    const available: u32 = 1;
+
+    if (p_groups) |groups| {
+        const write_count = @min(count.*, available);
+        if (write_count == 0) {
+            count.* = 0;
+            return .incomplete;
+        }
+
+        var group = groups[0];
+        group.physical_device_count = @intCast(instance.physical_devices.items.len);
+        group.physical_devices = @splat(.null_handle);
+        for (instance.physical_devices.items, 0..) |physical_device, i| {
+            group.physical_devices[i] = physical_device.toVkHandle(vk.PhysicalDevice);
+        }
+        group.subset_allocation = .false;
+        groups[0] = group;
+
+        count.* = write_count;
+        return .success;
+    }
+
+    count.* = available;
+    return .success;
+}
+
+pub export fn apeEnumeratePhysicalDeviceGroupsKHR(
+    p_instance: vk.Instance,
+    count: *u32,
+    p_groups: ?[*]vk.PhysicalDeviceGroupProperties,
+) callconv(vk.vulkan_call_conv) vk.Result {
+    return apeEnumeratePhysicalDeviceGroups(p_instance, count, p_groups);
+}
+
 // Physical Device functions =================================================================================================================================
 
 pub export fn apeCreateDevice(p_physical_device: vk.PhysicalDevice, info: *const vk.DeviceCreateInfo, callbacks: ?*const vk.AllocationCallbacks, p_device: *vk.Device) callconv(vk.vulkan_call_conv) vk.Result {
@@ -391,11 +465,16 @@ pub export fn apeCreateDevice(p_physical_device: vk.PhysicalDevice, info: *const
 
     const allocator = VulkanAllocator.init(callbacks, .device).allocator();
     const physical_device = Dispatchable(PhysicalDevice).fromHandleObject(p_physical_device) catch |err| return toVkResult(err);
+    physical_device.validateCreateInfo(allocator, info) catch |err| return toVkResult(err);
 
     std.log.scoped(.vkCreateDevice).debug("Using VkPhysicalDevice named {s}", .{physical_device.props.device_name});
 
     const device = physical_device.createDevice(allocator, info) catch |err| return toVkResult(err);
-    p_device.* = (Dispatchable(Device).wrap(allocator, device) catch |err| return toVkResult(err)).toVkHandle(vk.Device);
+    const dispatchable = Dispatchable(Device).wrap(allocator, device) catch |err| {
+        device.destroy(allocator) catch {};
+        return toVkResult(err);
+    };
+    p_device.* = dispatchable.toVkHandle(vk.Device);
     return .success;
 }
 
@@ -679,7 +758,7 @@ pub export fn apeAllocateMemory(p_device: vk.Device, info: *const vk.MemoryAlloc
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const device_memory = device.allocateMemory(allocator, info) catch |err| return toVkResult(err);
 
-    p_memory.* = (NonDispatchable(DeviceMemory).wrap(allocator, device_memory) catch |err| return toVkResult(err)).toVkHandle(vk.DeviceMemory);
+    p_memory.* = wrapNonDispatchable(DeviceMemory, allocator, device_memory, vk.DeviceMemory) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -723,7 +802,7 @@ pub export fn apeCreateBuffer(p_device: vk.Device, info: *const vk.BufferCreateI
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const buffer = device.createBuffer(allocator, info) catch |err| return toVkResult(err);
-    p_buffer.* = (NonDispatchable(Buffer).wrap(allocator, buffer) catch |err| return toVkResult(err)).toVkHandle(vk.Buffer);
+    p_buffer.* = wrapNonDispatchable(Buffer, allocator, buffer, vk.Buffer) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -737,7 +816,7 @@ pub export fn apeCreateBufferView(p_device: vk.Device, info: *const vk.BufferVie
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const view = device.createBufferView(allocator, info) catch |err| return toVkResult(err);
-    p_view.* = (NonDispatchable(BufferView).wrap(allocator, view) catch |err| return toVkResult(err)).toVkHandle(vk.BufferView);
+    p_view.* = wrapNonDispatchable(BufferView, allocator, view, vk.BufferView) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -752,7 +831,7 @@ pub export fn apeCreateCommandPool(p_device: vk.Device, info: *const vk.CommandP
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const pool = device.createCommandPool(allocator, info) catch |err| return toVkResult(err);
-    p_pool.* = (NonDispatchable(CommandPool).wrap(allocator, pool) catch |err| return toVkResult(err)).toVkHandle(vk.CommandPool);
+    p_pool.* = wrapNonDispatchable(CommandPool, allocator, pool, vk.CommandPool) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -808,7 +887,7 @@ pub export fn apeCreateDescriptorPool(p_device: vk.Device, info: *const vk.Descr
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const pool = device.createDescriptorPool(allocator, info) catch |err| return toVkResult(err);
-    p_pool.* = (NonDispatchable(DescriptorPool).wrap(allocator, pool) catch |err| return toVkResult(err)).toVkHandle(vk.DescriptorPool);
+    p_pool.* = wrapNonDispatchable(DescriptorPool, allocator, pool, vk.DescriptorPool) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -824,7 +903,7 @@ pub export fn apeCreateDescriptorSetLayout(p_device: vk.Device, info: *const vk.
     const allocator = VulkanAllocator.init(callbacks, .device).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const layout = device.createDescriptorSetLayout(allocator, info) catch |err| return toVkResult(err);
-    p_layout.* = (NonDispatchable(DescriptorSetLayout).wrap(allocator, layout) catch |err| return toVkResult(err)).toVkHandle(vk.DescriptorSetLayout);
+    p_layout.* = wrapNonDispatchable(DescriptorSetLayout, allocator, layout, vk.DescriptorSetLayout) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -839,7 +918,7 @@ pub export fn apeCreateEvent(p_device: vk.Device, info: *const vk.EventCreateInf
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const event = device.createEvent(allocator, info) catch |err| return toVkResult(err);
-    p_event.* = (NonDispatchable(Event).wrap(allocator, event) catch |err| return toVkResult(err)).toVkHandle(vk.Event);
+    p_event.* = wrapNonDispatchable(Event, allocator, event, vk.Event) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -854,7 +933,7 @@ pub export fn apeCreateFence(p_device: vk.Device, info: *const vk.FenceCreateInf
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const fence = device.createFence(allocator, info) catch |err| return toVkResult(err);
-    p_fence.* = (NonDispatchable(Fence).wrap(allocator, fence) catch |err| return toVkResult(err)).toVkHandle(vk.Fence);
+    p_fence.* = wrapNonDispatchable(Fence, allocator, fence, vk.Fence) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -869,7 +948,7 @@ pub export fn apeCreateFramebuffer(p_device: vk.Device, info: *const vk.Framebuf
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const framebuffer = device.createFramebuffer(allocator, info) catch |err| return toVkResult(err);
-    p_framebuffer.* = (NonDispatchable(Framebuffer).wrap(allocator, framebuffer) catch |err| return toVkResult(err)).toVkHandle(vk.Framebuffer);
+    p_framebuffer.* = wrapNonDispatchable(Framebuffer, allocator, framebuffer, vk.Framebuffer) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -922,7 +1001,7 @@ pub export fn apeCreateImage(p_device: vk.Device, info: *const vk.ImageCreateInf
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const image = device.createImage(allocator, info) catch |err| return toVkResult(err);
-    p_image.* = (NonDispatchable(Image).wrap(allocator, image) catch |err| return toVkResult(err)).toVkHandle(vk.Image);
+    p_image.* = wrapNonDispatchable(Image, allocator, image, vk.Image) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -936,7 +1015,7 @@ pub export fn apeCreateImageView(p_device: vk.Device, info: *const vk.ImageViewC
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const image_view = device.createImageView(allocator, info) catch |err| return toVkResult(err);
-    p_image_view.* = (NonDispatchable(ImageView).wrap(allocator, image_view) catch |err| return toVkResult(err)).toVkHandle(vk.ImageView);
+    p_image_view.* = wrapNonDispatchable(ImageView, allocator, image_view, vk.ImageView) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -951,7 +1030,7 @@ pub export fn apeCreatePipelineCache(p_device: vk.Device, info: *const vk.Pipeli
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const cache = device.createPipelineCache(allocator, info) catch |err| return toVkResult(err);
-    p_cache.* = (NonDispatchable(PipelineCache).wrap(allocator, cache) catch |err| return toVkResult(err)).toVkHandle(vk.PipelineCache);
+    p_cache.* = wrapNonDispatchable(PipelineCache, allocator, cache, vk.PipelineCache) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -967,7 +1046,7 @@ pub export fn apeCreatePipelineLayout(p_device: vk.Device, info: *const vk.Pipel
     const allocator = VulkanAllocator.init(callbacks, .device).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const layout = device.createPipelineLayout(allocator, info) catch |err| return toVkResult(err);
-    p_layout.* = (NonDispatchable(PipelineLayout).wrap(allocator, layout) catch |err| return toVkResult(err)).toVkHandle(vk.PipelineLayout);
+    p_layout.* = wrapNonDispatchable(PipelineLayout, allocator, layout, vk.PipelineLayout) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -982,7 +1061,7 @@ pub export fn apeCreateQueryPool(p_device: vk.Device, info: *const vk.QueryPoolC
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const pool = device.createQueryPool(allocator, info) catch |err| return toVkResult(err);
-    p_pool.* = (NonDispatchable(QueryPool).wrap(allocator, pool) catch |err| return toVkResult(err)).toVkHandle(vk.QueryPool);
+    p_pool.* = wrapNonDispatchable(QueryPool, allocator, pool, vk.QueryPool) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -997,7 +1076,7 @@ pub export fn apeCreateRenderPass(p_device: vk.Device, info: *const vk.RenderPas
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const pass = device.createRenderPass(allocator, info) catch |err| return toVkResult(err);
-    p_pass.* = (NonDispatchable(RenderPass).wrap(allocator, pass) catch |err| return toVkResult(err)).toVkHandle(vk.RenderPass);
+    p_pass.* = wrapNonDispatchable(RenderPass, allocator, pass, vk.RenderPass) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -1012,7 +1091,7 @@ pub export fn apeCreateSampler(p_device: vk.Device, info: *const vk.SamplerCreat
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const sampler = device.createSampler(allocator, info) catch |err| return toVkResult(err);
-    p_sampler.* = (NonDispatchable(Sampler).wrap(allocator, sampler) catch |err| return toVkResult(err)).toVkHandle(vk.Sampler);
+    p_sampler.* = wrapNonDispatchable(Sampler, allocator, sampler, vk.Sampler) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -1027,7 +1106,7 @@ pub export fn apeCreateSemaphore(p_device: vk.Device, info: *const vk.SemaphoreC
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const semaphore = device.createSemaphore(allocator, info) catch |err| return toVkResult(err);
-    p_semaphore.* = (NonDispatchable(BinarySemaphore).wrap(allocator, semaphore) catch |err| return toVkResult(err)).toVkHandle(vk.Semaphore);
+    p_semaphore.* = wrapNonDispatchable(BinarySemaphore, allocator, semaphore, vk.Semaphore) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -1042,7 +1121,7 @@ pub export fn apeCreateShaderModule(p_device: vk.Device, info: *const vk.ShaderM
     const allocator = VulkanAllocator.init(callbacks, .object).allocator();
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const module = device.createShaderModule(allocator, info) catch |err| return toVkResult(err);
-    p_module.* = (NonDispatchable(ShaderModule).wrap(allocator, module) catch |err| return toVkResult(err)).toVkHandle(vk.ShaderModule);
+    p_module.* = wrapNonDispatchable(ShaderModule, allocator, module, vk.ShaderModule) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -1348,6 +1427,8 @@ pub export fn apeGetDeviceProcAddr(p_device: vk.Device, p_name: ?[*:0]const u8)
     const name = std.mem.span(p_name.?);
 
     if (p_device == .null_handle) return null;
+    const device = Dispatchable(Device).fromHandleObject(p_device) catch return null;
+    if (isSwapchainDeviceFunction(name) and !device.khr_swapchain_enabled) return null;
     if (device_pfn_map.get(name)) |pfn| return pfn;
 
     return null;
@@ -1380,7 +1461,7 @@ pub export fn apeGetEventStatus(p_device: vk.Device, p_event: vk.Event) callconv
 
     const event = NonDispatchable(Event).fromHandleObject(p_event) catch |err| return toVkResult(err);
     event.getStatus() catch |err| return toVkResult(err);
-    return .success;
+    return .event_set;
 }
 
 pub export fn apeGetFenceStatus(p_device: vk.Device, p_fence: vk.Fence) callconv(vk.vulkan_call_conv) vk.Result {
@@ -1391,7 +1472,7 @@ pub export fn apeGetFenceStatus(p_device: vk.Device, p_fence: vk.Fence) callconv
 
     const fence = NonDispatchable(Fence).fromHandleObject(p_fence) catch |err| return toVkResult(err);
     fence.getStatus() catch |err| return toVkResult(err);
-    return .event_set;
+    return .success;
 }
 
 pub export fn apeGetImageMemoryRequirements(p_device: vk.Device, p_image: vk.Image, requirements: *vk.MemoryRequirements) callconv(vk.vulkan_call_conv) void {
@@ -1428,19 +1509,20 @@ pub export fn apeGetImageSubresourceLayout(p_device: vk.Device, p_image: vk.Imag
     layout.* = image.getSubresourceLayout(subresource.*) catch |err| return errorLogger(err);
 }
 
-pub export fn apeGetPipelineCacheData(p_device: vk.Device, p_cache: vk.PipelineCache, size: *usize, data: *anyopaque) callconv(vk.vulkan_call_conv) vk.Result {
+pub export fn apeGetPipelineCacheData(p_device: vk.Device, p_cache: vk.PipelineCache, size: *usize, data: ?*anyopaque) callconv(vk.vulkan_call_conv) vk.Result {
     entryPointBeginLogTrace(.vkGetPipelineCacheData);
     defer entryPointEndLogTrace();
 
     Dispatchable(Device).checkHandleValidity(p_device) catch |err| return toVkResult(err);
+    const cache = NonDispatchable(PipelineCache).fromHandleObject(p_cache) catch |err| return toVkResult(err);
 
-    notImplementedWarning();
+    const available = cache.availableDataSize();
-
+    const result = if (data) |ptr| blk: {
-    _ = p_cache;
+        const bytes = @as([*]u8, @ptrCast(ptr))[0..size.*];
-    _ = size;
+        break :blk cache.getData(bytes);
-    _ = data;
+    } else cache.getData(null);
-
+    size.* = if (result == .incomplete) 0 else available;
-    return .success;
+    return result;
 }
 
 pub export fn apeGetQueryPoolResults(
@@ -1503,14 +1585,14 @@ pub export fn apeMergePipelineCaches(p_device: vk.Device, p_dst: vk.PipelineCach
     defer entryPointEndLogTrace();
 
     Dispatchable(Device).checkHandleValidity(p_device) catch |err| return toVkResult(err);
+    const dst = NonDispatchable(PipelineCache).fromHandleObject(p_dst) catch |err| return toVkResult(err);
 
-    notImplementedWarning();
+    for (0..count) |i| {
+        _ = NonDispatchable(PipelineCache).fromHandleObject(p_srcs[i]) catch |err| return toVkResult(err);
+    }
 
-    _ = p_dst;
+    dst.merge() catch |err| return toVkResult(err);
-    _ = count;
+    return .success;
-    _ = p_srcs;
-
-    return .error_unknown;
 }
 
 pub export fn apeResetCommandPool(p_device: vk.Device, p_pool: vk.CommandPool, flags: vk.CommandPoolResetFlags) callconv(vk.vulkan_call_conv) vk.Result {
@@ -1533,7 +1615,7 @@ pub export fn apeResetDescriptorPool(p_device: vk.Device, p_pool: vk.DescriptorP
     return .success;
 }
 
-pub export fn apeResetEvent(p_device: vk.Device, p_event: vk.Fence) callconv(vk.vulkan_call_conv) vk.Result {
+pub export fn apeResetEvent(p_device: vk.Device, p_event: vk.Event) callconv(vk.vulkan_call_conv) vk.Result {
     entryPointBeginLogTrace(.vkResetEvent);
     defer entryPointEndLogTrace();
 
@@ -1557,7 +1639,7 @@ pub export fn apeResetFences(p_device: vk.Device, count: u32, p_fences: [*]const
     return .success;
 }
 
-pub export fn apeSetEvent(p_device: vk.Device, p_event: vk.Fence) callconv(vk.vulkan_call_conv) vk.Result {
+pub export fn apeSetEvent(p_device: vk.Device, p_event: vk.Event) callconv(vk.vulkan_call_conv) vk.Result {
     entryPointBeginLogTrace(.vkSetEvent);
     defer entryPointEndLogTrace();
 
@@ -2168,7 +2250,7 @@ pub export fn apeCreateSwapchainKHR(p_device: vk.Device, info: *const vk.Swapcha
     const device = Dispatchable(Device).fromHandleObject(p_device) catch |err| return toVkResult(err);
     const surface = NonDispatchable(SurfaceKHR).fromHandleObject(info.surface) catch |err| return toVkResult(err);
     const swapchain = SwapchainKHR.create(device, allocator, surface, info) catch |err| return toVkResult(err);
-    p_swapchain.* = (NonDispatchable(SwapchainKHR).wrap(allocator, swapchain) catch |err| return toVkResult(err)).toVkHandle(vk.SwapchainKHR);
+    p_swapchain.* = wrapNonDispatchable(SwapchainKHR, allocator, swapchain, vk.SwapchainKHR) catch |err| return toVkResult(err);
     return .success;
 }
 
@@ -2183,7 +2265,7 @@ pub export fn apeCreateWaylandSurfaceKHR(p_instance: vk.Instance, info: *const v
         const allocator = VulkanAllocator.init(callbacks, .object).allocator();
         const instance = Dispatchable(Instance).fromHandleObject(p_instance) catch |err| return toVkResult(err);
         const surface = WaylandSurfaceKHR.create(instance, allocator, info) catch |err| return toVkResult(err);
-        p_surface.* = (NonDispatchable(SurfaceKHR).wrap(allocator, surface) catch |err| return toVkResult(err)).toVkHandle(vk.SurfaceKHR);
+        p_surface.* = wrapNonDispatchable(SurfaceKHR, allocator, surface, vk.SurfaceKHR) catch |err| return toVkResult(err);
         return .success;
     } else {
         return .error_unknown;

src/vulkan/utils.zig

@@ -1,3 +1,29 @@
+const std = @import("std");
+const vk = @import("vulkan");
+
+pub fn boundedName(name: [*:0]const u8, max_len: usize) ?[]const u8 {
+    const bytes = name[0..max_len];
+    const len = std.mem.indexOfScalar(u8, bytes, 0) orelse return null;
+    return bytes[0..len];
+}
+
+pub fn propertyName(comptime max_len: usize, name: *const [max_len]u8) []const u8 {
+    return std.mem.sliceTo(name[0..], 0);
+}
+
+pub fn extensionName(name: *const [vk.MAX_EXTENSION_NAME_SIZE]u8) []const u8 {
+    return propertyName(vk.MAX_EXTENSION_NAME_SIZE, name);
+}
+
+pub fn isSupportedExtension(name: []const u8, extensions: []const vk.ExtensionProperties) bool {
+    for (extensions) |extension| {
+        if (std.mem.eql(u8, name, extensionName(&extension.extension_name))) {
+            return true;
+        }
+    }
+    return false;
+}
+
 pub fn writePacked(comptime T: type, bytes: []u8, value: T) void {
     const raw: [@sizeOf(T)]u8 = @bitCast(value);
     @memcpy(bytes[0..@sizeOf(T)], raw[0..]);

src/vulkan/wsi/SwapchainKHR.zig

@@ -68,8 +68,8 @@ pub fn getNextImage(self: *const Self, timeout: u64, semaphore: ?*BinarySemaphor
         if (image.state == .Available) {
             image.state = .Drawing;
             index.* = @intCast(i);
-            // TODO: signal semaphore
+            if (semaphore) |s|
-            _ = semaphore;
+                try s.signal();
             if (fence) |f|
                 try f.signal();
             return;