Giovanni Mascellani : dxgi: Reset the back buffer index to zero on ResizeBuffers().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ac265bf3fb6884bdd2b75e996d933ea791dfd3ee
URL:    https://gitlab.winehq.org/wine/wine/-/commit/ac265bf3fb6884bdd2b75e996d933ea...

Author: Giovanni Mascellani 
Date:   Sat Feb 25 22:27:20 2023 +0100

dxgi: Reset the back buffer index to zero on ResizeBuffers().

---

dlls/dxgi/swapchain.c  | 2 ++
 dlls/dxgi/tests/dxgi.c | 3 ---
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/dlls/dxgi/swapchain.c b/dlls/dxgi/swapchain.c
index a80e9ac0cf5..e00867f8069 100644
--- a/dlls/dxgi/swapchain.c
+++ b/dlls/dxgi/swapchain.c
@@ -2249,6 +2249,8 @@ static HRESULT d3d12_swapchain_resize_buffers(struct d3d12_swapchain *swapchain,
     if (!dxgi_validate_swapchain_desc(&new_desc))
         return DXGI_ERROR_INVALID_CALL;

+    swapchain->current_buffer_index = 0;
+
     if (desc->Width == new_desc.Width && desc->Height == new_desc.Height
             && desc->Format == new_desc.Format && desc->BufferCount == new_desc.BufferCount)
         return S_OK;
diff --git a/dlls/dxgi/tests/dxgi.c b/dlls/dxgi/tests/dxgi.c
index 14dc09269f9..4703bd8ee27 100644
--- a/dlls/dxgi/tests/dxgi.c
+++ b/dlls/dxgi/tests/dxgi.c
@@ -4988,7 +4988,6 @@ static void test_swapchain_backbuffer_index(IUnknown *device, BOOL is_d3d12)
         {
             index = IDXGISwapChain3_GetCurrentBackBufferIndex(swapchain3);
             expected_index = is_d3d12 ? j % swapchain_desc.BufferCount : 0;
-            todo_wine_if(is_d3d12)
             ok(index == expected_index, "Got back buffer index %u, expected %u.\n", index, expected_index);
             hr = IDXGISwapChain3_Present(swapchain3, 0, 0);
             ok(hr == S_OK, "Got unexpected hr %#lx.\n", hr);
@@ -5003,7 +5002,6 @@ static void test_swapchain_backbuffer_index(IUnknown *device, BOOL is_d3d12)
         {
             index = IDXGISwapChain3_GetCurrentBackBufferIndex(swapchain3);
             expected_index = is_d3d12 ? j % swapchain_desc.BufferCount : 0;
-            todo_wine_if(is_d3d12)
             ok(index == expected_index, "Got back buffer index %u, expected %u.\n", index, expected_index);
             hr = IDXGISwapChain3_Present(swapchain3, 0, 0);
             ok(hr == S_OK, "Got unexpected hr %#lx.\n", hr);
@@ -5017,7 +5015,6 @@ static void test_swapchain_backbuffer_index(IUnknown *device, BOOL is_d3d12)
         {
             index = IDXGISwapChain3_GetCurrentBackBufferIndex(swapchain3);
             expected_index = is_d3d12 ? j % swapchain_desc.BufferCount : 0;
-            todo_wine_if(is_d3d12)
             ok(index == expected_index, "Got back buffer index %u, expected %u.\n", index, expected_index);
             hr = IDXGISwapChain3_Present(swapchain3, 0, 0);
             ok(hr == S_OK, "Got unexpected hr %#lx.\n", hr);