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vkd3d: Add config to use host-visible vram for UPLOAD heap 

Adds the "upload_hvv" config flag, which will make D3D12_HEAP_TYPE_UPLOAD attempt to use host-visible VRAM for allocations.

This takes advantage of large or resizable BAR if available.

I see a perf delta of 83-84 -> 92-94 (~12%) when using this in Horizon Zero Dawn.

Signed-off-by: Joshua Ashton <joshua@froggi.es>
This commit is contained in:
Joshua Ashton 2021-07-09 19:42:06 +01:00 committed by Hans-Kristian Arntzen
parent 05e31bfba9
commit 1b957a1f74
4 changed files with 5 additions and 0 deletions
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1
README.md
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@ -154,6 +154,7 @@ commas or semicolons.
- `dxr` - Enables DXR support if supported by device.
- `force_static_cbv` - Unsafe speed hack on NVIDIA. May or may not give a significant performance uplift.
- `single_queue` - Do not use asynchronous compute or transfer queues.
- `upload_hvv` - Attempt to use host-visible VRAM (large/resizable BAR) for the UPLOAD heap. May improve performance at the cost of using additional video memory over system memory.
- `VKD3D_DEBUG` - controls the debug level for log messages produced by
vkd3d-proton. Accepts the following values: none, err, info, fixme, warn, trace.
- `VKD3D_SHADER_DEBUG` - controls the debug level for log messages produced by

1
include/vkd3d.h
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@ -70,6 +70,7 @@ enum vkd3d_config_flags
VKD3D_CONFIG_FLAG_FORCE_RTV_EXCLUSIVE_QUEUE = 0x00000080,
VKD3D_CONFIG_FLAG_FORCE_DSV_EXCLUSIVE_QUEUE = 0x00000100,
VKD3D_CONFIG_FLAG_FORCE_MINIMUM_SUBGROUP_SIZE = 0x00000200,
VKD3D_CONFIG_FLAG_UPLOAD_HVV = 0x00000400,
};
typedef HRESULT (*PFN_vkd3d_signal_event)(HANDLE event);

1
libs/vkd3d/device.c
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@ -490,6 +490,7 @@ static const struct vkd3d_debug_option vkd3d_config_options[] =
{"force_rtv_exclusive_queue", VKD3D_CONFIG_FLAG_FORCE_RTV_EXCLUSIVE_QUEUE},
{"force_dsv_exclusive_queue", VKD3D_CONFIG_FLAG_FORCE_DSV_EXCLUSIVE_QUEUE},
{"force_exclusive_queue", VKD3D_CONFIG_FLAG_FORCE_RTV_EXCLUSIVE_QUEUE | VKD3D_CONFIG_FLAG_FORCE_DSV_EXCLUSIVE_QUEUE},
{"upload_hvv", VKD3D_CONFIG_FLAG_UPLOAD_HVV},
};
static void vkd3d_config_flags_init_once(void)

2
libs/vkd3d/memory.c
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@ -83,6 +83,8 @@ static HRESULT vkd3d_select_memory_flags(struct d3d12_device *device, const D3D1
case D3D12_HEAP_TYPE_UPLOAD:
*type_flags = VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT;
if (vkd3d_config_flags & VKD3D_CONFIG_FLAG_UPLOAD_HVV)
*type_flags |= VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT;
break;
case D3D12_HEAP_TYPE_READBACK: