1 /*-------------------------------------------------------------------------
2 * Vulkan CTS Framework
3 * --------------------
4 *
5 * Copyright (c) 2019 Google Inc.
6 * Copyright (c) 2019 The Khronos Group Inc.
7 *
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
11 *
12 * http://www.apache.org/licenses/LICENSE-2.0
13 *
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 *
20 *//*!
21 * \file
22 * \brief Memory management utilities.
23 *//*--------------------------------------------------------------------*/
24
25 #include "vkMemUtil.hpp"
26 #include "deDefs.h"
27 #include "vkStrUtil.hpp"
28 #include "vkQueryUtil.hpp"
29 #include "vkRef.hpp"
30 #include "vkRefUtil.hpp"
31 #include "vkImageUtil.hpp"
32 #include "deInt32.h"
33
34 #include <sstream>
35
36 namespace vk
37 {
38
39 using de::UniquePtr;
40 using de::MovePtr;
41 using std::vector;
42
43 typedef de::SharedPtr<Allocation> AllocationSp;
44
45 namespace
46 {
47
48 class HostPtr
49 {
50 public:
51 HostPtr (const DeviceInterface& vkd, VkDevice device, VkDeviceMemory memory, VkDeviceSize offset, VkDeviceSize size, VkMemoryMapFlags flags);
52 ~HostPtr (void);
53
get(void) const54 void* get (void) const { return m_ptr; }
55
56 private:
57 const DeviceInterface& m_vkd;
58 const VkDevice m_device;
59 const VkDeviceMemory m_memory;
60 void* const m_ptr;
61 };
62
HostPtr(const DeviceInterface & vkd,VkDevice device,VkDeviceMemory memory,VkDeviceSize offset,VkDeviceSize size,VkMemoryMapFlags flags)63 HostPtr::HostPtr (const DeviceInterface& vkd, VkDevice device, VkDeviceMemory memory, VkDeviceSize offset, VkDeviceSize size, VkMemoryMapFlags flags)
64 : m_vkd (vkd)
65 , m_device (device)
66 , m_memory (memory)
67 , m_ptr (mapMemory(vkd, device, memory, offset, size, flags))
68 {
69 }
70
~HostPtr(void)71 HostPtr::~HostPtr (void)
72 {
73 m_vkd.unmapMemory(m_device, m_memory);
74 }
75
isHostVisibleMemory(const VkPhysicalDeviceMemoryProperties & deviceMemProps,deUint32 memoryTypeNdx)76 bool isHostVisibleMemory (const VkPhysicalDeviceMemoryProperties& deviceMemProps, deUint32 memoryTypeNdx)
77 {
78 DE_ASSERT(memoryTypeNdx < deviceMemProps.memoryTypeCount);
79 return (deviceMemProps.memoryTypes[memoryTypeNdx].propertyFlags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT) != 0u;
80 }
81
82 } // anonymous
83
84 // Allocation
85
Allocation(VkDeviceMemory memory,VkDeviceSize offset,void * hostPtr)86 Allocation::Allocation (VkDeviceMemory memory, VkDeviceSize offset, void* hostPtr)
87 : m_memory (memory)
88 , m_offset (offset)
89 , m_hostPtr (hostPtr)
90 {
91 }
92
~Allocation(void)93 Allocation::~Allocation (void)
94 {
95 }
96
flushAlloc(const DeviceInterface & vkd,VkDevice device,const Allocation & alloc)97 void flushAlloc (const DeviceInterface& vkd, VkDevice device, const Allocation& alloc)
98 {
99 flushMappedMemoryRange(vkd, device, alloc.getMemory(), alloc.getOffset(), VK_WHOLE_SIZE);
100 }
101
invalidateAlloc(const DeviceInterface & vkd,VkDevice device,const Allocation & alloc)102 void invalidateAlloc (const DeviceInterface& vkd, VkDevice device, const Allocation& alloc)
103 {
104 invalidateMappedMemoryRange(vkd, device, alloc.getMemory(), alloc.getOffset(), VK_WHOLE_SIZE);
105 }
106
107 // MemoryRequirement
108
109 const MemoryRequirement MemoryRequirement::Any = MemoryRequirement(0x0u);
110 const MemoryRequirement MemoryRequirement::HostVisible = MemoryRequirement(MemoryRequirement::FLAG_HOST_VISIBLE);
111 const MemoryRequirement MemoryRequirement::Coherent = MemoryRequirement(MemoryRequirement::FLAG_COHERENT);
112 const MemoryRequirement MemoryRequirement::LazilyAllocated = MemoryRequirement(MemoryRequirement::FLAG_LAZY_ALLOCATION);
113 const MemoryRequirement MemoryRequirement::Protected = MemoryRequirement(MemoryRequirement::FLAG_PROTECTED);
114 const MemoryRequirement MemoryRequirement::Local = MemoryRequirement(MemoryRequirement::FLAG_LOCAL);
115 const MemoryRequirement MemoryRequirement::Cached = MemoryRequirement(MemoryRequirement::FLAG_CACHED);
116 const MemoryRequirement MemoryRequirement::NonLocal = MemoryRequirement(MemoryRequirement::FLAG_NON_LOCAL);
117 const MemoryRequirement MemoryRequirement::DeviceAddress = MemoryRequirement(MemoryRequirement::FLAG_DEVICE_ADDRESS);
118 const MemoryRequirement MemoryRequirement::DeviceAddressCaptureReplay = MemoryRequirement(MemoryRequirement::FLAG_DEVICE_ADDRESS_CAPTURE_REPLAY);
119
matchesHeap(VkMemoryPropertyFlags heapFlags) const120 bool MemoryRequirement::matchesHeap (VkMemoryPropertyFlags heapFlags) const
121 {
122 // sanity check
123 if ((m_flags & FLAG_COHERENT) && !(m_flags & FLAG_HOST_VISIBLE))
124 DE_FATAL("Coherent memory must be host-visible");
125 if ((m_flags & FLAG_HOST_VISIBLE) && (m_flags & FLAG_LAZY_ALLOCATION))
126 DE_FATAL("Lazily allocated memory cannot be mappable");
127 if ((m_flags & FLAG_PROTECTED) && (m_flags & FLAG_HOST_VISIBLE))
128 DE_FATAL("Protected memory cannot be mappable");
129
130 // host-visible
131 if ((m_flags & FLAG_HOST_VISIBLE) && !(heapFlags & VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT))
132 return false;
133
134 // coherent
135 if ((m_flags & FLAG_COHERENT) && !(heapFlags & VK_MEMORY_PROPERTY_HOST_COHERENT_BIT))
136 return false;
137
138 // lazy
139 if ((m_flags & FLAG_LAZY_ALLOCATION) && !(heapFlags & VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT))
140 return false;
141
142 // protected
143 if ((m_flags & FLAG_PROTECTED) && !(heapFlags & VK_MEMORY_PROPERTY_PROTECTED_BIT))
144 return false;
145
146 // local
147 if ((m_flags & FLAG_LOCAL) && !(heapFlags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT))
148 return false;
149
150 // cached
151 if ((m_flags & FLAG_CACHED) && !(heapFlags & VK_MEMORY_PROPERTY_HOST_CACHED_BIT))
152 return false;
153
154 // non-local
155 if ((m_flags & FLAG_NON_LOCAL) && (heapFlags & VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT))
156 return false;
157
158 return true;
159 }
160
MemoryRequirement(deUint32 flags)161 MemoryRequirement::MemoryRequirement (deUint32 flags)
162 : m_flags(flags)
163 {
164 }
165
166 // SimpleAllocator
167
168 class SimpleAllocation : public Allocation
169 {
170 public:
171 SimpleAllocation (Move<VkDeviceMemory> mem, MovePtr<HostPtr> hostPtr, size_t offset);
172 virtual ~SimpleAllocation (void);
173
174 private:
175 const Unique<VkDeviceMemory> m_memHolder;
176 const UniquePtr<HostPtr> m_hostPtr;
177 };
178
SimpleAllocation(Move<VkDeviceMemory> mem,MovePtr<HostPtr> hostPtr,size_t offset)179 SimpleAllocation::SimpleAllocation (Move<VkDeviceMemory> mem, MovePtr<HostPtr> hostPtr, size_t offset)
180 : Allocation (*mem, offset, hostPtr ? hostPtr->get() : DE_NULL)
181 , m_memHolder (mem)
182 , m_hostPtr (hostPtr)
183 {
184 }
185
~SimpleAllocation(void)186 SimpleAllocation::~SimpleAllocation (void)
187 {
188 }
189
SimpleAllocator(const DeviceInterface & vk,VkDevice device,const VkPhysicalDeviceMemoryProperties & deviceMemProps,size_t offset)190 SimpleAllocator::SimpleAllocator (const DeviceInterface& vk, VkDevice device, const VkPhysicalDeviceMemoryProperties& deviceMemProps, size_t offset)
191 : m_vk (vk)
192 , m_device (device)
193 , m_memProps(deviceMemProps)
194 , m_offset (offset)
195 {
196 }
197
allocate(const VkMemoryAllocateInfo & allocInfo,VkDeviceSize alignment)198 MovePtr<Allocation> SimpleAllocator::allocate (const VkMemoryAllocateInfo& allocInfo, VkDeviceSize alignment)
199 {
200 // Align the offset to the requirements.
201 size_t offset = deAlignSize(m_offset, static_cast<size_t>(alignment));
202 VkMemoryAllocateInfo info = allocInfo;
203 info.allocationSize += offset;
204 Move<VkDeviceMemory> mem = allocateMemory(m_vk, m_device, &info);
205 MovePtr<HostPtr> hostPtr;
206
207 if (isHostVisibleMemory(m_memProps, info.memoryTypeIndex))
208 hostPtr = MovePtr<HostPtr>(new HostPtr(m_vk, m_device, *mem, offset, info.allocationSize, 0u));
209
210 return MovePtr<Allocation>(new SimpleAllocation(mem, hostPtr, offset));
211 }
212
allocate(const VkMemoryRequirements & memReqs,MemoryRequirement requirement)213 MovePtr<Allocation> SimpleAllocator::allocate (const VkMemoryRequirements& memReqs, MemoryRequirement requirement)
214 {
215 const deUint32 memoryTypeNdx = selectMatchingMemoryType(m_memProps, memReqs.memoryTypeBits, requirement);
216 // Align the offset to the requirements.
217 size_t offset = deAlignSize(m_offset, static_cast<size_t>(memReqs.alignment));
218
219 VkMemoryAllocateInfo allocInfo =
220 {
221 VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, // VkStructureType sType;
222 DE_NULL, // const void* pNext;
223 memReqs.size + offset, // VkDeviceSize allocationSize;
224 memoryTypeNdx, // deUint32 memoryTypeIndex;
225 };
226
227 VkMemoryAllocateFlagsInfo allocFlagsInfo =
228 {
229 VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_FLAGS_INFO, // VkStructureType sType
230 DE_NULL, // const void* pNext
231 0, // VkMemoryAllocateFlags flags
232 0, // uint32_t deviceMask
233 };
234
235 if (requirement & MemoryRequirement::DeviceAddress)
236 allocFlagsInfo.flags |= VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_BIT;
237
238 if (requirement & MemoryRequirement::DeviceAddressCaptureReplay)
239 allocFlagsInfo.flags |= VK_MEMORY_ALLOCATE_DEVICE_ADDRESS_CAPTURE_REPLAY_BIT;
240
241 if (allocFlagsInfo.flags)
242 allocInfo.pNext = &allocFlagsInfo;
243
244 Move<VkDeviceMemory> mem = allocateMemory(m_vk, m_device, &allocInfo);
245 MovePtr<HostPtr> hostPtr;
246
247 if (requirement & MemoryRequirement::HostVisible)
248 {
249 DE_ASSERT(isHostVisibleMemory(m_memProps, allocInfo.memoryTypeIndex));
250 hostPtr = MovePtr<HostPtr>(new HostPtr(m_vk, m_device, *mem, offset, memReqs.size, 0u));
251 }
252
253 return MovePtr<Allocation>(new SimpleAllocation(mem, hostPtr, offset));
254 }
255
allocateExtended(const InstanceInterface & vki,const DeviceInterface & vkd,const VkPhysicalDevice & physDevice,const VkDevice device,const VkMemoryRequirements & memReqs,const MemoryRequirement requirement,const void * pNext)256 MovePtr<Allocation> allocateExtended (const InstanceInterface& vki,
257 const DeviceInterface& vkd,
258 const VkPhysicalDevice& physDevice,
259 const VkDevice device,
260 const VkMemoryRequirements& memReqs,
261 const MemoryRequirement requirement,
262 const void* pNext)
263 {
264 const VkPhysicalDeviceMemoryProperties memoryProperties = getPhysicalDeviceMemoryProperties(vki, physDevice);
265 const deUint32 memoryTypeNdx = selectMatchingMemoryType(memoryProperties, memReqs.memoryTypeBits, requirement);
266 const VkMemoryAllocateInfo allocInfo =
267 {
268 VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO, // VkStructureType sType
269 pNext, // const void* pNext
270 memReqs.size, // VkDeviceSize allocationSize
271 memoryTypeNdx, // deUint32 memoryTypeIndex
272 };
273 Move<VkDeviceMemory> mem = allocateMemory(vkd, device, &allocInfo);
274 MovePtr<HostPtr> hostPtr;
275
276 if (requirement & MemoryRequirement::HostVisible)
277 {
278 DE_ASSERT(isHostVisibleMemory(memoryProperties, allocInfo.memoryTypeIndex));
279 hostPtr = MovePtr<HostPtr>(new HostPtr(vkd, device, *mem, 0u, allocInfo.allocationSize, 0u));
280 }
281
282 return MovePtr<Allocation>(new SimpleAllocation(mem, hostPtr, 0u));
283 }
284
allocateDedicated(const InstanceInterface & vki,const DeviceInterface & vkd,const VkPhysicalDevice & physDevice,const VkDevice device,const VkBuffer buffer,MemoryRequirement requirement)285 de::MovePtr<Allocation> allocateDedicated (const InstanceInterface& vki,
286 const DeviceInterface& vkd,
287 const VkPhysicalDevice& physDevice,
288 const VkDevice device,
289 const VkBuffer buffer,
290 MemoryRequirement requirement)
291 {
292 const VkMemoryRequirements memoryRequirements = getBufferMemoryRequirements(vkd, device, buffer);
293 const VkMemoryDedicatedAllocateInfo dedicatedAllocationInfo =
294 {
295 VK_STRUCTURE_TYPE_MEMORY_DEDICATED_ALLOCATE_INFO, // VkStructureType sType
296 DE_NULL, // const void* pNext
297 DE_NULL, // VkImage image
298 buffer // VkBuffer buffer
299 };
300
301 return allocateExtended(vki, vkd, physDevice, device, memoryRequirements, requirement, &dedicatedAllocationInfo);
302 }
303
allocateDedicated(const InstanceInterface & vki,const DeviceInterface & vkd,const VkPhysicalDevice & physDevice,const VkDevice device,const VkImage image,MemoryRequirement requirement)304 de::MovePtr<Allocation> allocateDedicated (const InstanceInterface& vki,
305 const DeviceInterface& vkd,
306 const VkPhysicalDevice& physDevice,
307 const VkDevice device,
308 const VkImage image,
309 MemoryRequirement requirement)
310 {
311 const VkMemoryRequirements memoryRequirements = getImageMemoryRequirements(vkd, device, image);
312 const VkMemoryDedicatedAllocateInfo dedicatedAllocationInfo =
313 {
314 VK_STRUCTURE_TYPE_MEMORY_DEDICATED_ALLOCATE_INFO, // VkStructureType sType
315 DE_NULL, // const void* pNext
316 image, // VkImage image
317 DE_NULL // VkBuffer buffer
318 };
319
320 return allocateExtended(vki, vkd, physDevice, device, memoryRequirements, requirement, &dedicatedAllocationInfo);
321 }
322
mapMemory(const DeviceInterface & vkd,VkDevice device,VkDeviceMemory mem,VkDeviceSize offset,VkDeviceSize size,VkMemoryMapFlags flags)323 void* mapMemory (const DeviceInterface& vkd, VkDevice device, VkDeviceMemory mem, VkDeviceSize offset, VkDeviceSize size, VkMemoryMapFlags flags)
324 {
325 void* hostPtr = DE_NULL;
326 VK_CHECK(vkd.mapMemory(device, mem, offset, size, flags, &hostPtr));
327 TCU_CHECK(hostPtr);
328 return hostPtr;
329 }
330
flushMappedMemoryRange(const DeviceInterface & vkd,VkDevice device,VkDeviceMemory memory,VkDeviceSize offset,VkDeviceSize size)331 void flushMappedMemoryRange (const DeviceInterface& vkd, VkDevice device, VkDeviceMemory memory, VkDeviceSize offset, VkDeviceSize size)
332 {
333 const VkMappedMemoryRange range =
334 {
335 VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE,
336 DE_NULL,
337 memory,
338 offset,
339 size
340 };
341
342 VK_CHECK(vkd.flushMappedMemoryRanges(device, 1u, &range));
343 }
344
invalidateMappedMemoryRange(const DeviceInterface & vkd,VkDevice device,VkDeviceMemory memory,VkDeviceSize offset,VkDeviceSize size)345 void invalidateMappedMemoryRange (const DeviceInterface& vkd, VkDevice device, VkDeviceMemory memory, VkDeviceSize offset, VkDeviceSize size)
346 {
347 const VkMappedMemoryRange range =
348 {
349 VK_STRUCTURE_TYPE_MAPPED_MEMORY_RANGE,
350 DE_NULL,
351 memory,
352 offset,
353 size
354 };
355
356 VK_CHECK(vkd.invalidateMappedMemoryRanges(device, 1u, &range));
357 }
358
selectMatchingMemoryType(const VkPhysicalDeviceMemoryProperties & deviceMemProps,deUint32 allowedMemTypeBits,MemoryRequirement requirement)359 deUint32 selectMatchingMemoryType (const VkPhysicalDeviceMemoryProperties& deviceMemProps, deUint32 allowedMemTypeBits, MemoryRequirement requirement)
360 {
361 const deUint32 compatibleTypes = getCompatibleMemoryTypes(deviceMemProps, requirement);
362 deUint32 candidates = allowedMemTypeBits & compatibleTypes;
363 #ifdef CTS_USES_VULKANSC
364 // in case of Vulkan SC: prefer memory types from SEU-safe heaps ( SEU = single event upsets )
365 const deUint32 seuSafeTypes = getSEUSafeMemoryTypes(deviceMemProps);
366 deUint32 seuSafeCandidates = candidates & seuSafeTypes;
367 if (seuSafeCandidates != 0u)
368 candidates = seuSafeCandidates;
369 #endif // CTS_USES_VULKANSC
370
371 if (candidates == 0u)
372 TCU_THROW(NotSupportedError, "No compatible memory type found");
373
374 return (deUint32)deCtz32(candidates);
375 }
376
getCompatibleMemoryTypes(const VkPhysicalDeviceMemoryProperties & deviceMemProps,MemoryRequirement requirement)377 deUint32 getCompatibleMemoryTypes (const VkPhysicalDeviceMemoryProperties& deviceMemProps, MemoryRequirement requirement)
378 {
379 deUint32 compatibleTypes = 0u;
380
381 for (deUint32 memoryTypeNdx = 0; memoryTypeNdx < deviceMemProps.memoryTypeCount; memoryTypeNdx++)
382 {
383 if (requirement.matchesHeap(deviceMemProps.memoryTypes[memoryTypeNdx].propertyFlags))
384 compatibleTypes |= (1u << memoryTypeNdx);
385 }
386
387 return compatibleTypes;
388 }
389
390 #ifdef CTS_USES_VULKANSC
391
getSEUSafeMemoryTypes(const VkPhysicalDeviceMemoryProperties & deviceMemProps)392 deUint32 getSEUSafeMemoryTypes (const VkPhysicalDeviceMemoryProperties& deviceMemProps)
393 {
394 deUint32 seuSafeTypes = 0u;
395
396 for (deUint32 memoryTypeNdx = 0; memoryTypeNdx < deviceMemProps.memoryTypeCount; memoryTypeNdx++)
397 {
398 if( ( deviceMemProps.memoryHeaps[deviceMemProps.memoryTypes[memoryTypeNdx].heapIndex].flags & VK_MEMORY_HEAP_SEU_SAFE_BIT ) != 0u )
399 seuSafeTypes |= (1u << memoryTypeNdx);
400 }
401 return seuSafeTypes;
402 }
403
404 #endif // CTS_USES_VULKANSC
405
bindImagePlanesMemory(const DeviceInterface & vkd,const VkDevice device,const VkImage image,const deUint32 numPlanes,vector<AllocationSp> & allocations,vk::Allocator & allocator,const vk::MemoryRequirement requirement)406 void bindImagePlanesMemory (const DeviceInterface& vkd,
407 const VkDevice device,
408 const VkImage image,
409 const deUint32 numPlanes,
410 vector<AllocationSp>& allocations,
411 vk::Allocator& allocator,
412 const vk::MemoryRequirement requirement)
413 {
414 vector<VkBindImageMemoryInfo> coreInfos;
415 vector<VkBindImagePlaneMemoryInfo> planeInfos;
416 coreInfos.reserve(numPlanes);
417 planeInfos.reserve(numPlanes);
418
419 for (deUint32 planeNdx = 0; planeNdx < numPlanes; ++planeNdx)
420 {
421 const VkImageAspectFlagBits planeAspect = getPlaneAspect(planeNdx);
422 const VkMemoryRequirements reqs = getImagePlaneMemoryRequirements(vkd, device, image, planeAspect);
423
424 allocations.push_back(AllocationSp(allocator.allocate(reqs, requirement).release()));
425
426 VkBindImagePlaneMemoryInfo planeInfo =
427 {
428 VK_STRUCTURE_TYPE_BIND_IMAGE_PLANE_MEMORY_INFO,
429 DE_NULL,
430 planeAspect
431 };
432 planeInfos.push_back(planeInfo);
433
434 VkBindImageMemoryInfo coreInfo =
435 {
436 VK_STRUCTURE_TYPE_BIND_IMAGE_MEMORY_INFO,
437 &planeInfos.back(),
438 image,
439 allocations.back()->getMemory(),
440 allocations.back()->getOffset(),
441 };
442 coreInfos.push_back(coreInfo);
443 }
444
445 VK_CHECK(vkd.bindImageMemory2(device, numPlanes, coreInfos.data()));
446 }
447
bindImage(const DeviceInterface & vk,const VkDevice device,Allocator & allocator,const VkImage image,const MemoryRequirement requirement)448 MovePtr<Allocation> bindImage (const DeviceInterface& vk,
449 const VkDevice device,
450 Allocator& allocator,
451 const VkImage image,
452 const MemoryRequirement requirement)
453 {
454 MovePtr<Allocation> alloc = allocator.allocate(getImageMemoryRequirements(vk, device, image), requirement);
455 VK_CHECK(vk.bindImageMemory(device, image, alloc->getMemory(), alloc->getOffset()));
456 return alloc;
457 }
458
bindBuffer(const DeviceInterface & vk,const VkDevice device,Allocator & allocator,const VkBuffer buffer,const MemoryRequirement requirement)459 MovePtr<Allocation> bindBuffer (const DeviceInterface& vk,
460 const VkDevice device,
461 Allocator& allocator,
462 const VkBuffer buffer,
463 const MemoryRequirement requirement)
464 {
465 MovePtr<Allocation> alloc(allocator.allocate(getBufferMemoryRequirements(vk, device, buffer), requirement));
466 VK_CHECK(vk.bindBufferMemory(device, buffer, alloc->getMemory(), alloc->getOffset()));
467 return alloc;
468 }
469
zeroBuffer(const DeviceInterface & vk,const VkDevice device,const Allocation & alloc,const VkDeviceSize size)470 void zeroBuffer (const DeviceInterface& vk,
471 const VkDevice device,
472 const Allocation& alloc,
473 const VkDeviceSize size)
474 {
475 deMemset(alloc.getHostPtr(), 0, static_cast<std::size_t>(size));
476 flushAlloc(vk, device, alloc);
477 }
478
479 } // vk
480