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Protection against incorrect (0 or very large) memory budget returned by some bugged drivers

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2 other minor fixes.
This commit is contained in:
Adam Sawicki 2020-03-09 16:58:18 +01:00
parent 36af654b84
commit 6a93b8aa5f
3 changed files with 24 additions and 4 deletions
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11
src/Tests.cpp
View file

@ -4935,9 +4935,12 @@ static void TestBudget()
{
wprintf(L"Testing budget...\n");
static const VkDeviceSize BUF_SIZE = 100ull * 1024 * 1024;
static const VkDeviceSize BUF_SIZE = 10ull * 1024 * 1024;
static const uint32_t BUF_COUNT = 4;
const VkPhysicalDeviceMemoryProperties* memProps = {};
vmaGetMemoryProperties(g_hAllocator, &memProps);
for(uint32_t testIndex = 0; testIndex < 2; ++testIndex)
{
vmaSetCurrentFrameIndex(g_hAllocator, ++g_FrameIndex);
@ -4945,8 +4948,10 @@ static void TestBudget()
VmaBudget budgetBeg[VK_MAX_MEMORY_HEAPS] = {};
vmaGetBudget(g_hAllocator, budgetBeg);
for(uint32_t i = 0; i < VK_MAX_MEMORY_HEAPS; ++i)
for(uint32_t i = 0; i < memProps->memoryHeapCount; ++i)
{
TEST(budgetBeg[i].budget > 0);
TEST(budgetBeg[i].budget <= memProps->memoryHeaps[i].size);
TEST(budgetBeg[i].allocationBytes <= budgetBeg[i].blockBytes);
}
@ -4994,7 +4999,7 @@ static void TestBudget()
vmaGetBudget(g_hAllocator, budgetEnd);
// CHECK
for(uint32_t i = 0; i < VK_MAX_MEMORY_HEAPS; ++i)
for(uint32_t i = 0; i < memProps->memoryHeapCount; ++i)
{
TEST(budgetEnd[i].allocationBytes <= budgetEnd[i].blockBytes);
if(i == heapIndex)

3
src/VulkanSample.cpp
View file

@ -1163,7 +1163,8 @@ void SetAllocatorCreateInfo(VmaAllocatorCreateInfo& outInfo)
outInfo.flags |= VMA_ALLOCATOR_CREATE_KHR_BIND_MEMORY2_BIT;
}
#if !defined(VMA_MEMORY_BUDGET) || VMA_MEMORY_BUDGET == 1
if(VK_EXT_memory_budget_enabled && VK_KHR_get_physical_device_properties2_enabled)
if(VK_EXT_memory_budget_enabled && (
GetVulkanApiVersion() >= VK_API_VERSION_1_1 || VK_KHR_get_physical_device_properties2_enabled))
{
outInfo.flags |= VMA_ALLOCATOR_CREATE_EXT_MEMORY_BUDGET_BIT;
}

14
src/vk_mem_alloc.h
View file

@ -16723,6 +16723,20 @@ void VmaAllocator_T::UpdateVulkanBudget()
m_Budget.m_VulkanUsage[heapIndex] = budgetProps.heapUsage[heapIndex];
m_Budget.m_VulkanBudget[heapIndex] = budgetProps.heapBudget[heapIndex];
m_Budget.m_BlockBytesAtBudgetFetch[heapIndex] = m_Budget.m_BlockBytes[heapIndex].load();
// Some bugged drivers return the budget incorrectly, e.g. 0 or much bigger than heap size.
if(m_Budget.m_VulkanBudget[heapIndex] == 0)
{
m_Budget.m_VulkanBudget[heapIndex] = m_MemProps.memoryHeaps[heapIndex].size * 8 / 10; // 80% heuristics.
}
else if(m_Budget.m_VulkanBudget[heapIndex] > m_MemProps.memoryHeaps[heapIndex].size)
{
m_Budget.m_VulkanBudget[heapIndex] = m_MemProps.memoryHeaps[heapIndex].size;
}
if(m_Budget.m_VulkanUsage[heapIndex] == 0 && m_Budget.m_BlockBytesAtBudgetFetch[heapIndex] > 0)
{
m_Budget.m_VulkanUsage[heapIndex] = m_Budget.m_BlockBytesAtBudgetFetch[heapIndex];
}
}
m_Budget.m_OperationsSinceBudgetFetch = 0;
}