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[vk] use static_vector instead of small_vector for TFB and other bindings (#3641)

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MK8D is a big offender, taking up lots of time memcpy'ing and memmov'ing small_vector<> AND to add salt to the wound it doesn't even do heap allocations (no game does I think) - so basically useless waste of compute time in hot path for NO reason :^)

Signed-off-by: lizzie <lizzie@eden-emu.dev>

Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3641
Reviewed-by: CamilleLaVey <camillelavey99@gmail.com>
Reviewed-by: DraVee <chimera@dravee.dev>
Co-authored-by: lizzie <lizzie@eden-emu.dev>
Co-committed-by: lizzie <lizzie@eden-emu.dev>
This commit is contained in:
lizzie 2026-03-06 15:05:05 +01:00 • committed by crueter
parent c70b857c4f
commit 2ed1328c93
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GPG key ID: 425ACD2D4830EBC6
2 changed files with 33 additions and 30 deletions
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13
src/video_core/buffer_cache/buffer_cache_base.h
View file

@ -14,9 +14,12 @@
#include <mutex>
#include <numeric>
#include <span>
#include <ankerl/unordered_dense.h>
#include <vector>
#include <ankerl/unordered_dense.h>
#include <boost/container/static_vector.hpp>
#include <boost/container/small_vector.hpp>
#include "common/common_types.h"
#include "common/div_ceil.h"
#include "common/literals.h"
@ -94,10 +97,10 @@ static constexpr Binding NULL_BINDING{
template <typename Buffer>
struct HostBindings {
boost::container::small_vector<Buffer*, NUM_VERTEX_BUFFERS> buffers;
boost::container::small_vector<u64, NUM_VERTEX_BUFFERS> offsets;
boost::container::small_vector<u64, NUM_VERTEX_BUFFERS> sizes;
boost::container::small_vector<u64, NUM_VERTEX_BUFFERS> strides;
boost::container::static_vector<Buffer*, NUM_VERTEX_BUFFERS> buffers;
boost::container::static_vector<u64, NUM_VERTEX_BUFFERS> offsets;
boost::container::static_vector<u64, NUM_VERTEX_BUFFERS> sizes;
boost::container::static_vector<u64, NUM_VERTEX_BUFFERS> strides;
u32 min_index{NUM_VERTEX_BUFFERS};
u32 max_index{0};
};

50
src/video_core/renderer_vulkan/vk_buffer_cache.cpp
View file

@ -10,6 +10,7 @@
#include <span>
#include <vector>
#include "video_core/buffer_cache/buffer_cache_base.h"
#include "video_core/renderer_vulkan/vk_buffer_cache.h"
#include "video_core/renderer_vulkan/maxwell_to_vk.h"
@ -583,18 +584,18 @@ void BufferCacheRuntime::BindVertexBuffer(u32 index, VkBuffer buffer, u32 offset
}
void BufferCacheRuntime::BindVertexBuffers(VideoCommon::HostBindings<Buffer>& bindings) {
boost::container::small_vector<VkBuffer, 32> buffer_handles;
for (u32 index = 0; index < bindings.buffers.size(); ++index) {
auto handle = bindings.buffers[index]->Handle();
boost::container::static_vector<VkBuffer, VideoCommon::NUM_VERTEX_BUFFERS> buffer_handles(bindings.buffers.size());
for (u32 i = 0; i < bindings.buffers.size(); ++i) {
auto handle = bindings.buffers[i]->Handle();
if (handle == VK_NULL_HANDLE) {
bindings.offsets[index] = 0;
bindings.sizes[index] = VK_WHOLE_SIZE;
bindings.offsets[i] = 0;
bindings.sizes[i] = VK_WHOLE_SIZE;
if (!device.HasNullDescriptor()) {
ReserveNullBuffer();
handle = *null_buffer;
}
}
buffer_handles.push_back(handle);
buffer_handles[i] = handle;
}
const u32 device_max = device.GetMaxVertexInputBindings();
const u32 min_binding = (std::min)(bindings.min_index, device_max);
@ -604,19 +605,12 @@ void BufferCacheRuntime::BindVertexBuffers(VideoCommon::HostBindings<Buffer>& bi
return;
}
if (device.IsExtExtendedDynamicStateSupported()) {
scheduler.Record([bindings_ = std::move(bindings),
buffer_handles_ = std::move(buffer_handles),
binding_count](vk::CommandBuffer cmdbuf) {
cmdbuf.BindVertexBuffers2EXT(bindings_.min_index, binding_count, buffer_handles_.data(),
bindings_.offsets.data(), bindings_.sizes.data(),
bindings_.strides.data());
scheduler.Record([bindings_ = std::move(bindings), buffer_handles_ = std::move(buffer_handles), binding_count](vk::CommandBuffer cmdbuf) {
cmdbuf.BindVertexBuffers2EXT(bindings_.min_index, binding_count, buffer_handles_.data(), bindings_.offsets.data(), bindings_.sizes.data(), bindings_.strides.data());
});
} else {
scheduler.Record([bindings_ = std::move(bindings),
buffer_handles_ = std::move(buffer_handles),
binding_count](vk::CommandBuffer cmdbuf) {
cmdbuf.BindVertexBuffers(bindings_.min_index, binding_count, buffer_handles_.data(),
bindings_.offsets.data());
scheduler.Record([bindings_ = std::move(bindings), buffer_handles_ = std::move(buffer_handles), binding_count](vk::CommandBuffer cmdbuf) {
cmdbuf.BindVertexBuffers(bindings_.min_index, binding_count, buffer_handles_.data(), bindings_.offsets.data());
});
}
}
@ -647,15 +641,21 @@ void BufferCacheRuntime::BindTransformFeedbackBuffers(VideoCommon::HostBindings<
// Already logged in the rasterizer
return;
}
boost::container::small_vector<VkBuffer, 4> buffer_handles;
for (u32 index = 0; index < bindings.buffers.size(); ++index) {
buffer_handles.push_back(bindings.buffers[index]->Handle());
boost::container::static_vector<VkBuffer, VideoCommon::NUM_VERTEX_BUFFERS> buffer_handles(bindings.buffers.size());
for (u32 i = 0; i < bindings.buffers.size(); ++i) {
auto handle = bindings.buffers[i]->Handle();
if (handle == VK_NULL_HANDLE) {
bindings.offsets[i] = 0;
bindings.sizes[i] = VK_WHOLE_SIZE;
if (!device.HasNullDescriptor()) {
ReserveNullBuffer();
handle = *null_buffer;
}
}
buffer_handles[i] = handle;
}
scheduler.Record([bindings_ = std::move(bindings),
buffer_handles_ = std::move(buffer_handles)](vk::CommandBuffer cmdbuf) {
cmdbuf.BindTransformFeedbackBuffersEXT(0, static_cast<u32>(buffer_handles_.size()),
buffer_handles_.data(), bindings_.offsets.data(),
bindings_.sizes.data());
scheduler.Record([bindings_ = std::move(bindings), buffer_handles_ = std::move(buffer_handles)](vk::CommandBuffer cmdbuf) {
cmdbuf.BindTransformFeedbackBuffersEXT(0, u32(buffer_handles_.size()), buffer_handles_.data(), bindings_.offsets.data(), bindings_.sizes.data());
});
}