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[Vulkan] Sparse shared memory

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This commit is contained in:
Triang3l
2020-10-07 21:03:50 +03:00
parent fee2189d39
commit 4d59f556a9
7 changed files with 298 additions and 68 deletions
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17
src/xenia/gpu/vulkan/vulkan_shared_memory.h
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@@ -54,14 +54,13 @@ class VulkanSharedMemory : public SharedMemory {
VkBuffer buffer() const { return buffer_; }
protected:
bool AllocateSparseHostGpuMemoryRange(uint32_t offset_allocations,
uint32_t length_allocations) override;
bool UploadRanges(const std::vector<std::pair<uint32_t, uint32_t>>&
upload_page_ranges) override;
private:
bool IsSparse() const {
return buffer_allocation_size_log2_ < kBufferSizeLog2;
}
void GetBarrier(Usage usage, VkPipelineStageFlags& stage_mask,
VkAccessFlags& access_mask) const;
@@ -70,16 +69,8 @@ class VulkanSharedMemory : public SharedMemory {
VkBuffer buffer_ = VK_NULL_HANDLE;
uint32_t buffer_memory_type_;
// Maximum of 1024 allocations in the worst case for all of the buffer because
// of the overall 4096 allocation count limit on Windows drivers.
static constexpr uint32_t kMinBufferAllocationSizeLog2 =
std::max(kHostGpuMemoryOptimalSparseAllocationLog2,
kBufferSizeLog2 - uint32_t(10));
uint32_t buffer_allocation_size_log2_ = kBufferSizeLog2;
// Sparse memory allocations, of different sizes.
// Single for non-sparse, every allocation so far for sparse.
std::vector<VkDeviceMemory> buffer_memory_;
// One bit per every 2^buffer_allocation_size_log2_ of the buffer.
std::vector<uint64_t> buffer_memory_allocated_;
// First usage will likely be uploading.
Usage last_usage_ = Usage::kTransferDestination;