dxgi: Implement d3d12_swapchain_GetBuffer().

Signed-off-by: Józef Kucia <jkucia@codeweavers.com> Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com> Signed-off-by: Alexandre Julliard <julliard@winehq.org>

dxgi: Implement d3d12_swapchain_GetBuffer().
9ff8fe17 · Józef Kucia · Alexandre Julliard · ec74ab52 · 9ff8fe17
Commit 9ff8fe17 authored May 31, 2018 by Józef Kucia Committed by Alexandre Julliard May 31, 2018
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swapchain.c dlls/dxgi/swapchain.c +10 -2

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--- a/dlls/dxgi/swapchain.c
+++ b/dlls/dxgi/swapchain.c
@@ -1012,10 +1012,18 @@ static HRESULT STDMETHODCALLTYPE d3d12_swapchain_Present(IDXGISwapChain3 *iface,
 static HRESULT STDMETHODCALLTYPE d3d12_swapchain_GetBuffer(IDXGISwapChain3 *iface,
        UINT buffer_idx, REFIID iid, void **surface)
 {
-    FIXME("iface %p, buffer_idx %u, iid %s, surface %p stub!\n",
+    struct d3d12_swapchain *swapchain = d3d12_swapchain_from_IDXGISwapChain3(iface);
+
+    TRACE("iface %p, buffer_idx %u, iid %s, surface %p.\n",
            iface, buffer_idx, debugstr_guid(iid), surface);

-    return E_NOTIMPL;
+    if (buffer_idx >= swapchain->buffer_count)
+    {
+        WARN("Invalid buffer index %u.\n", buffer_idx);
+        return DXGI_ERROR_INVALID_CALL;
+    }
+
+    return ID3D12Resource_QueryInterface(swapchain->buffers[buffer_idx], iid, surface);
 }

 static HRESULT STDMETHODCALLTYPE DECLSPEC_HOTPATCH d3d12_swapchain_SetFullscreenState(IDXGISwapChain3 *iface,