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[dxvk] Discard slices from old physical buffers

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Improves effectiveness of an optimization that allows
using dynamic buffer offsets for descriptor sets.
This commit is contained in:
Philip Rebohle 2018-06-22 00:27:52 +02:00
parent 79a1703aea
commit 32cd85dc11
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GPG Key ID: C8CC613427A31C99
2 changed files with 10 additions and 4 deletions
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12
src/dxvk/dxvk_buffer.cpp
View File

@ -42,11 +42,11 @@ namespace dxvk {
// If there are still no slices available, create a new
// physical buffer and add all slices to the free list.
if (m_freeSlices.size() == 0) {
const Rc<DxvkPhysicalBuffer> buffer
= this->allocPhysicalBuffer(m_physSliceCount);
std::unique_lock<std::mutex> swapLock(m_swapMutex);
m_physBuffer = this->allocPhysicalBuffer(m_physSliceCount);
for (uint32_t i = 0; i < m_physSliceCount; i++) {
m_freeSlices.push_back(buffer->slice(
m_freeSlices.push_back(m_physBuffer->slice(
m_physSliceStride * i,
m_physSliceLength));
}
@ -64,7 +64,11 @@ namespace dxvk {
void DxvkBuffer::freePhysicalSlice(const DxvkPhysicalBufferSlice& slice) {
// Add slice to a separate free list to reduce lock contention.
std::unique_lock<std::mutex> swapLock(m_swapMutex);
m_nextSlices.push_back(slice);
// Discard slices allocated from other physical buffers.
// This may make descriptor set binding more efficient.
if (m_physBuffer->handle() == slice.handle())
m_nextSlices.push_back(slice);
}

2
src/dxvk/dxvk_buffer.h
View File

@ -149,6 +149,8 @@ namespace dxvk {
VkDeviceSize m_physSliceLength = 0;
VkDeviceSize m_physSliceStride = 0;
VkDeviceSize m_physSliceCount = 2;
Rc<DxvkPhysicalBuffer> m_physBuffer;
Rc<DxvkPhysicalBuffer> allocPhysicalBuffer(
VkDeviceSize sliceCount) const;