Michael Müller : dxgi: Implement dxgi_output_GetGammaControlCapabilities().

[Alexandre Julliard]

Module: wine
Branch: master
Commit: ad76b1fb36c73133586368a38f280e0de0744c33
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=ad76b1fb36c73133586368a38...

Author: Michael Müller <michael(a)fds-team.de>
Date:   Fri Nov 30 14:43:03 2018 +0100

dxgi: Implement dxgi_output_GetGammaControlCapabilities().

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=43584
Signed-off-by: Józef Kucia <jkucia(a)codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet(a)codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard(a)winehq.org>

---

 dlls/dxgi/output.c | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/dlls/dxgi/output.c b/dlls/dxgi/output.c
index 868a368..4a508b3 100644
--- 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,