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buffer_cache: Skip cache on small uploads on Vulkan

Browse source 
Ports from OpenGL the optimization to skip small 3D uniform buffer
uploads. This will take advantage of the previously introduced stream
buffer.

Fixes instances where the staging buffer offset was being ignored.
This commit is contained in:
ReinUsesLisp 2021-01-17 03:16:15 -03:00
parent 35df1d1864
commit a02b4e1df6
3 changed files with 18 additions and 9 deletions
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17
src/video_core/buffer_cache/buffer_cache.h
View file

@ -660,24 +660,25 @@ void BufferCache<P>::BindHostGraphicsUniformBuffer(size_t stage, u32 index, u32
const VAddr cpu_addr = binding.cpu_addr;
const u32 size = binding.size;
Buffer& buffer = slot_buffers[binding.buffer_id];
if constexpr (IS_OPENGL) {
if (size <= SKIP_CACHE_SIZE && !buffer.IsRegionGpuModified(cpu_addr, size)) {
if (size <= SKIP_CACHE_SIZE && !buffer.IsRegionGpuModified(cpu_addr, size)) {
if constexpr (IS_OPENGL) {
if (runtime.HasFastBufferSubData()) {
// Fast path for Nvidia
if (!HasFastUniformBufferBound(stage, binding_index)) {
// We only have to bind when the currently bound buffer is not the fast version
fast_bound_uniform_buffers[stage] |= 1U << binding_index;
runtime.BindFastUniformBuffer(stage, binding_index, size);
}
const auto span = ImmediateBufferWithData(cpu_addr, size);
runtime.PushFastUniformBuffer(stage, binding_index, span);
} else {
// Stream buffer path to avoid stalling on non-Nvidia drivers
const auto span = runtime.BindMappedUniformBuffer(stage, binding_index, size);
cpu_memory.ReadBlockUnsafe(cpu_addr, span.data(), size);
return;
}
return;
}
fast_bound_uniform_buffers[stage] |= 1U << binding_index;
// Stream buffer path to avoid stalling on non-Nvidia drivers or Vulkan
const std::span<u8> span = runtime.BindMappedUniformBuffer(stage, binding_index, size);
cpu_memory.ReadBlockUnsafe(cpu_addr, span.data(), size);
return;
}
// Classic cached path
SynchronizeBuffer(buffer, cpu_addr, size);

7
src/video_core/renderer_vulkan/vk_buffer_cache.h
View file

@ -69,6 +69,13 @@ public:
void BindTransformFeedbackBuffer(u32 index, VkBuffer buffer, u32 offset, u32 size);
std::span<u8> BindMappedUniformBuffer([[maybe_unused]] size_t stage,
[[maybe_unused]] u32 binding_index, u32 size) {
const StagingBufferRef ref = staging_pool.Request(size, MemoryUsage::Upload);
BindBuffer(ref.buffer, static_cast<u32>(ref.offset), size);
return ref.mapped_span;
}
void BindUniformBuffer(VkBuffer buffer, u32 offset, u32 size) {
BindBuffer(buffer, offset, size);
}

3
src/video_core/renderer_vulkan/vk_staging_buffer_pool.cpp
View file

@ -86,7 +86,8 @@ StagingBufferPool::StagingBufferPool(const Device& device_, MemoryAllocator& mem
.pNext = nullptr,
.flags = 0,
.size = STREAM_BUFFER_SIZE,
.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
.usage = VK_BUFFER_USAGE_TRANSFER_SRC_BIT | VK_BUFFER_USAGE_UNIFORM_BUFFER_BIT |
VK_BUFFER_USAGE_INDEX_BUFFER_BIT,
.sharingMode = VK_SHARING_MODE_EXCLUSIVE,
.queueFamilyIndexCount = 0,
.pQueueFamilyIndices = nullptr,