kronos_compute/implementation/
device.rs

1//! REAL Kronos device implementation - NO ICD forwarding!
2
3use crate::sys::*;
4use crate::core::*;
5use crate::ffi::*;
6use std::ptr;
7use std::sync::atomic::{AtomicU64, Ordering};
8use std::sync::Mutex;
9use std::collections::HashMap;
10
11// Device handle counter
12static DEVICE_COUNTER: AtomicU64 = AtomicU64::new(1);
13
14// Registry of active devices
15lazy_static::lazy_static! {
16    static ref DEVICES: Mutex<HashMap<u64, DeviceData>> = Mutex::new(HashMap::new());
17}
18
19struct DeviceData {
20    physical_device: VkPhysicalDevice,
21    queue_family_index: u32,
22    queue: VkQueue,
23}
24
25/// Get physical device properties - return info about our virtual compute device
26#[no_mangle]
27pub unsafe extern "C" fn vkGetPhysicalDeviceProperties(
28    physicalDevice: VkPhysicalDevice,
29    pProperties: *mut VkPhysicalDeviceProperties,
30) {
31    if physicalDevice.is_null() || pProperties.is_null() {
32        return;
33    }
34    
35    let props = &mut *pProperties;
36    
37    // API version - we support Vulkan 1.3 compute
38    props.apiVersion = VK_API_VERSION_1_3;
39    props.driverVersion = VK_MAKE_VERSION(0, 2, 3);
40    props.vendorID = 0x1337; // Custom vendor ID
41    props.deviceID = 0x0001;
42    props.deviceType = VkPhysicalDeviceType::VirtualGpu;
43    
44    // Device name
45    let name = b"Kronos Virtual Compute Device\0";
46    let len = name.len().min(VK_MAX_PHYSICAL_DEVICE_NAME_SIZE as usize);
47    props.deviceName[..len].copy_from_slice(&name[..len].iter().map(|&b| b as i8).collect::<Vec<_>>());
48    
49    // Limits - set reasonable compute limits
50    props.limits.maxComputeSharedMemorySize = 49152; // 48KB
51    props.limits.maxComputeWorkGroupCount = [65536, 65536, 65536];
52    props.limits.maxComputeWorkGroupInvocations = 1024;
53    props.limits.maxComputeWorkGroupSize = [1024, 1024, 64];
54    
55    // Sparse properties - we don't support sparse
56    props.sparseProperties = VkPhysicalDeviceSparseProperties {
57        residencyStandard2DBlockShape: VK_FALSE,
58        residencyStandard2DMultisampleBlockShape: VK_FALSE,
59        residencyStandard3DBlockShape: VK_FALSE,
60        residencyAlignedMipSize: VK_FALSE,
61        residencyNonResidentStrict: VK_FALSE,
62    };
63}
64
65/// Get queue family properties - we have one compute queue
66#[no_mangle]
67pub unsafe extern "C" fn vkGetPhysicalDeviceQueueFamilyProperties(
68    physicalDevice: VkPhysicalDevice,
69    pQueueFamilyPropertyCount: *mut u32,
70    pQueueFamilyProperties: *mut VkQueueFamilyProperties,
71) {
72    if physicalDevice.is_null() || pQueueFamilyPropertyCount.is_null() {
73        return;
74    }
75    
76    if pQueueFamilyProperties.is_null() {
77        *pQueueFamilyPropertyCount = 1;
78        return;
79    }
80    
81    let count = *pQueueFamilyPropertyCount;
82    if count == 0 {
83        return;
84    }
85    
86    // We have one queue family that supports compute
87    let props = &mut *pQueueFamilyProperties;
88    props.queueFlags = VkQueueFlags::COMPUTE | VkQueueFlags::TRANSFER;
89    props.queueCount = 1;
90    props.timestampValidBits = 64;
91    props.minImageTransferGranularity = VkExtent3D { width: 1, height: 1, depth: 1 };
92    
93    *pQueueFamilyPropertyCount = 1;
94}
95
96/// Create logical device
97#[no_mangle]
98pub unsafe extern "C" fn vkCreateDevice(
99    physicalDevice: VkPhysicalDevice,
100    pCreateInfo: *const VkDeviceCreateInfo,
101    _pAllocator: *const VkAllocationCallbacks,
102    pDevice: *mut VkDevice,
103) -> VkResult {
104    if physicalDevice.is_null() || pCreateInfo.is_null() || pDevice.is_null() {
105        return VkResult::ErrorInitializationFailed;
106    }
107    
108    let create_info = &*pCreateInfo;
109    
110    // Verify queue creation
111    if create_info.queueCreateInfoCount == 0 {
112        return VkResult::ErrorInitializationFailed;
113    }
114    
115    // Get first queue family (should be compute)
116    let queue_info = &*create_info.pQueueCreateInfos;
117    let queue_family_index = queue_info.queueFamilyIndex;
118    
119    // Create device handle
120    let device_handle = DEVICE_COUNTER.fetch_add(1, Ordering::SeqCst);
121    let queue_handle = DEVICE_COUNTER.fetch_add(1, Ordering::SeqCst);
122    
123    // Store device data
124    let device_data = DeviceData {
125        physical_device: physicalDevice,
126        queue_family_index,
127        queue: VkQueue::from_raw(queue_handle),
128    };
129    
130    DEVICES.lock().unwrap().insert(device_handle, device_data);
131    
132    *pDevice = VkDevice::from_raw(device_handle);
133    
134    log::info!("Created Kronos device {:?} - pure Rust compute implementation", device_handle);
135    
136    VkResult::Success
137}
138
139/// Get device queue
140#[no_mangle]
141pub unsafe extern "C" fn vkGetDeviceQueue(
142    device: VkDevice,
143    queueFamilyIndex: u32,
144    queueIndex: u32,
145    pQueue: *mut VkQueue,
146) {
147    if device.is_null() || pQueue.is_null() {
148        return;
149    }
150    
151    if queueIndex != 0 {
152        return; // We only have one queue
153    }
154    
155    let handle = device.as_raw();
156    if let Some(device_data) = DEVICES.lock().unwrap().get(&handle) {
157        if queueFamilyIndex == device_data.queue_family_index {
158            *pQueue = device_data.queue;
159        }
160    }
161}
162
163/// Get physical device memory properties
164#[no_mangle]
165pub unsafe extern "C" fn vkGetPhysicalDeviceMemoryProperties(
166    physicalDevice: VkPhysicalDevice,
167    pMemoryProperties: *mut VkPhysicalDeviceMemoryProperties,
168) {
169    if physicalDevice.is_null() || pMemoryProperties.is_null() {
170        return;
171    }
172    
173    let props = &mut *pMemoryProperties;
174    
175    // We support one memory type - host visible and coherent
176    props.memoryTypeCount = 1;
177    props.memoryTypes[0] = VkMemoryType {
178        propertyFlags: VkMemoryPropertyFlags::HOST_VISIBLE | VkMemoryPropertyFlags::HOST_COHERENT,
179        heapIndex: 0,
180    };
181    
182    // One memory heap - 16GB virtual memory
183    props.memoryHeapCount = 1;
184    props.memoryHeaps[0] = VkMemoryHeap {
185        size: 16 * 1024 * 1024 * 1024, // 16GB
186        flags: 0, // No specific heap flags
187    };
188}
189
190/// Destroy device
191#[no_mangle]
192pub unsafe extern "C" fn vkDestroyDevice(
193    device: VkDevice,
194    _pAllocator: *const VkAllocationCallbacks,
195) {
196    if device.is_null() {
197        return;
198    }
199    
200    let handle = device.as_raw();
201    DEVICES.lock().unwrap().remove(&handle);
202    
203    log::info!("Destroyed Kronos device {:?}", handle);
204}
kronos_compute/implementation/device.rs

kronos_compute/implementation/
device.rs
