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[dxvk] Fix some logic errors around sysmem chunk size

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This commit is contained in:
Philip Rebohle 2024-09-11 15:21:03 +02:00
parent 565ec7e0d3
commit c1a25df468
1 changed files with 10 additions and 8 deletions
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18
src/dxvk/dxvk_memory.cpp
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@ -313,7 +313,10 @@ namespace dxvk {
VkDeviceSize align,
const DxvkMemoryProperties& info,
DxvkMemoryFlags hints) {
VkDeviceSize chunkSize = pickChunkSize(type->memTypeId, size, hints);
constexpr VkDeviceSize DedicatedAllocationThreshold = 3;
VkDeviceSize chunkSize = pickChunkSize(type->memTypeId,
DedicatedAllocationThreshold * size, hints);
DxvkMemory memory;
@ -323,7 +326,7 @@ namespace dxvk {
// Prefer a dedicated allocation for very large resources in order to
// reduce fragmentation if a large number of those resources are in use
bool wantsDedicatedAllocation = 3 * size >= chunkSize;
bool wantsDedicatedAllocation = DedicatedAllocationThreshold * size > chunkSize;
// Try to reuse existing memory as much as possible in case the heap is nearly full
bool heapBudgedExceeded = 5 * type->heap->stats.memoryUsed + size > 4 * type->heap->properties.size;
@ -332,12 +335,12 @@ namespace dxvk {
// Attempt to suballocate from existing chunks first
for (uint32_t i = 0; i < type->chunks.size() && !memory; i++)
memory = type->chunks[i]->alloc(info.flags, size, align, hints);
// If no existing chunk can accomodate the allocation, and if a dedicated
// allocation is not preferred, create a new chunk and suballocate from it
if (!memory && !wantsDedicatedAllocation) {
DxvkDeviceMemory devMem;
if (this->shouldFreeEmptyChunks(type->heap, chunkSize))
this->freeEmptyChunks(type->heap);
@ -497,7 +500,7 @@ namespace dxvk {
VkDeviceSize chunkSize = m_memTypes[memTypeId].chunkSize;
while (chunkSize < requiredSize)
while (chunkSize < requiredSize && chunkSize < MaxChunkSize)
chunkSize <<= 1u;
if (hints.test(DxvkMemoryFlag::Small))
@ -525,9 +528,8 @@ namespace dxvk {
// Don't bump chunk size if we reached the maximum or if
// we already were unable to allocate a full chunk.
if (chunkSize < MaxChunkSize && chunkSize <= allocatedSize
&& chunkSize <= m_memTypes[memTypeId].heap->stats.memoryAllocated)
m_memTypes[memTypeId].chunkSize <<= 1u;
if (chunkSize <= allocatedSize && chunkSize <= m_memTypes[memTypeId].heap->stats.memoryAllocated)
m_memTypes[memTypeId].chunkSize = pickChunkSize(memTypeId, chunkSize * 2, DxvkMemoryFlags());
}