dxgi: Implement dxgi_output_GetGammaControlCapabilities().

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=43584Signed-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 dxgi_output_GetGammaControlCapabilities().
ad76b1fb · Michael Müller · Alexandre Julliard · 4dcba35b · ad76b1fb
Commit ad76b1fb authored Nov 30, 2018 by Michael Müller Committed by Alexandre Julliard Nov 30, 2018
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output.c dlls/dxgi/output.c +15 -2

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--- a/dlls/dxgi/output.c
+++ b/dlls/dxgi/output.c
@@ -297,9 +297,22 @@ static void STDMETHODCALLTYPE dxgi_output_ReleaseOwnership(IDXGIOutput4 *iface)
 static HRESULT STDMETHODCALLTYPE dxgi_output_GetGammaControlCapabilities(IDXGIOutput4 *iface,
        DXGI_GAMMA_CONTROL_CAPABILITIES *gamma_caps)
 {
-    FIXME("iface %p, gamma_caps %p stub!\n", iface, gamma_caps);
+    unsigned int i;

-    return E_NOTIMPL;
+    TRACE("iface %p, gamma_caps %p.\n", iface, gamma_caps);
+
+    if (!gamma_caps)
+        return E_INVALIDARG;
+
+    gamma_caps->ScaleAndOffsetSupported = FALSE;
+    gamma_caps->MaxConvertedValue = 1.0f;
+    gamma_caps->MinConvertedValue = 0.0f;
+    gamma_caps->NumGammaControlPoints = 256;
+
+    for (i = 0; i < gamma_caps->NumGammaControlPoints; ++i)
+        gamma_caps->ControlPointPositions[i] = i / 255.0f;
+
+    return S_OK;
 }

 static HRESULT STDMETHODCALLTYPE dxgi_output_SetGammaControl(IDXGIOutput4 *iface,