From 3c0f797ca6ecbe7619ff3705ad42735e8b5eadfa Mon Sep 17 00:00:00 2001
From: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
Date: Mon, 15 Jul 2024 10:06:14 +1000
Subject: [PATCH] Added dxgi_getFrameStatistics patchset

---
 ...b-IDXGISwapChain4-GetFrameStatistics.patch | 125 ++++++++++++++++++
 patches/dxgi_getFrameStatistics/definition    |   1 +
 2 files changed, 126 insertions(+)
 create mode 100644 patches/dxgi_getFrameStatistics/0001-dxgi-Semi-stub-IDXGISwapChain4-GetFrameStatistics.patch
 create mode 100644 patches/dxgi_getFrameStatistics/definition

diff --git a/patches/dxgi_getFrameStatistics/0001-dxgi-Semi-stub-IDXGISwapChain4-GetFrameStatistics.patch b/patches/dxgi_getFrameStatistics/0001-dxgi-Semi-stub-IDXGISwapChain4-GetFrameStatistics.patch
new file mode 100644
index 00000000..289e0339
--- /dev/null
+++ b/patches/dxgi_getFrameStatistics/0001-dxgi-Semi-stub-IDXGISwapChain4-GetFrameStatistics.patch
@@ -0,0 +1,125 @@
+From e31146d5dd91ef05298ae98f7db4868e73011865 Mon Sep 17 00:00:00 2001
+From: Alistair Leslie-Hughes <leslie_alistair@hotmail.com>
+Date: Thu, 23 May 2024 14:25:57 +1000
+Subject: [PATCH] dxgi: Semi-stub IDXGISwapChain::GetFrameStatistics.
+
+Not completely correct but does allow improved framerates.  Mileage will vary.
+---
+ dlls/dxgi/swapchain.c | 89 +++++++++++++++++++++++++++++++++++++++++--
+ 1 file changed, 85 insertions(+), 4 deletions(-)
+
+diff --git a/dlls/dxgi/swapchain.c b/dlls/dxgi/swapchain.c
+index 4797fcecd8d..4111a488407 100644
+--- a/dlls/dxgi/swapchain.c
++++ b/dlls/dxgi/swapchain.c
+@@ -587,12 +587,66 @@ static HRESULT STDMETHODCALLTYPE d3d11_swapchain_GetContainingOutput(IDXGISwapCh
+     return dxgi_get_output_from_window(swapchain->factory, window, output);
+ }
+ 
++static int get_display_frequency(void)
++{
++    DEVMODEW mode;
++    BOOL ret;
++
++    memset(&mode, 0, sizeof(mode));
++    mode.dmSize = sizeof(mode);
++    ret = EnumDisplaySettingsExW(NULL, ENUM_CURRENT_SETTINGS, &mode, 0);
++    if (ret && mode.dmFields & DM_DISPLAYFREQUENCY && mode.dmDisplayFrequency)
++    {
++        return mode.dmDisplayFrequency;
++    }
++    else
++    {
++        WARN("Failed to query display frequency, returning a fallback value.\n");
++        return 60;
++    }
++}
++
++static LARGE_INTEGER get_perf_req(void)
++{
++    LARGE_INTEGER performance_frequency;
++
++    QueryPerformanceFrequency(&performance_frequency);
++    return performance_frequency;
++}
++
+ static HRESULT STDMETHODCALLTYPE d3d11_swapchain_GetFrameStatistics(IDXGISwapChain4 *iface,
+         DXGI_FRAME_STATISTICS *stats)
+ {
+-    FIXME("iface %p, stats %p stub!\n", iface, stats);
++    struct d3d11_swapchain *swapchain = d3d11_swapchain_from_IDXGISwapChain4(iface);
++    HRESULT hr = S_OK;
++    static BOOL once = 0;
++    const LARGE_INTEGER performance_frequency = get_perf_req();
++    int display_frequency = get_display_frequency();
+ 
+-    return E_NOTIMPL;
++    LARGE_INTEGER count;
++    TRACE("iface %p, stats %p Semi-stub\n", iface, stats);
++
++    if (!stats)
++        return E_INVALIDARG;
++
++    QueryPerformanceCounter(&count);
++
++    stats->PresentCount          = swapchain->present_count;
++    stats->PresentRefreshCount   = 0;
++    stats->SyncRefreshCount      = 0;
++    stats->SyncQPCTime.QuadPart  = count.QuadPart;
++    stats->SyncGPUTime.QuadPart  = 0;
++
++    stats->PresentRefreshCount =  performance_frequency.QuadPart / display_frequency;
++    stats->SyncRefreshCount = display_frequency;
++
++    if(!once)
++    {
++        once++;
++        hr = DXGI_ERROR_FRAME_STATISTICS_DISJOINT;
++    }
++
++    return hr;
+ }
+ 
+ static HRESULT STDMETHODCALLTYPE d3d11_swapchain_GetLastPresentCount(IDXGISwapChain4 *iface,
+@@ -2704,9 +2758,36 @@ static HRESULT STDMETHODCALLTYPE d3d12_swapchain_GetContainingOutput(IDXGISwapCh
+ static HRESULT STDMETHODCALLTYPE d3d12_swapchain_GetFrameStatistics(IDXGISwapChain4 *iface,
+         DXGI_FRAME_STATISTICS *stats)
+ {
+-    FIXME("iface %p, stats %p stub!\n", iface, stats);
++    struct d3d12_swapchain *swapchain = d3d12_swapchain_from_IDXGISwapChain4(iface);
++    HRESULT hr = S_OK;
++    static BOOL once = 0;
++    const LARGE_INTEGER performance_frequency = get_perf_req();
++    int display_frequency = get_display_frequency();
+ 
+-    return E_NOTIMPL;
++    LARGE_INTEGER count;
++    TRACE("iface %p, stats %p Semi-stub\n", iface, stats);
++
++    if (!stats)
++        return E_INVALIDARG;
++
++    QueryPerformanceCounter(&count);
++
++    stats->PresentCount          = swapchain->frame_number;
++    stats->PresentRefreshCount   = 0;
++    stats->SyncRefreshCount      = 0;
++    stats->SyncQPCTime.QuadPart  = count.QuadPart;
++    stats->SyncGPUTime.QuadPart  = 0;
++
++    stats->PresentRefreshCount =  performance_frequency.QuadPart / display_frequency;
++    stats->SyncRefreshCount = display_frequency;
++
++    if(!once)
++    {
++        once++;
++        hr = DXGI_ERROR_FRAME_STATISTICS_DISJOINT;
++    }
++
++    return hr;
+ }
+ 
+ static HRESULT STDMETHODCALLTYPE d3d12_swapchain_GetLastPresentCount(IDXGISwapChain4 *iface,
+-- 
+2.43.0
+
diff --git a/patches/dxgi_getFrameStatistics/definition b/patches/dxgi_getFrameStatistics/definition
new file mode 100644
index 00000000..e826c0ed
--- /dev/null
+++ b/patches/dxgi_getFrameStatistics/definition
@@ -0,0 +1 @@
+Fixes: [53696] d3d11: Semi-stub IDXGISwapChain::GetFrameStatistics.