From d714a10095cbd2cc3029ccdf53cf1588f7686e02 Mon Sep 17 00:00:00 2001
From: Mike Griese <migrie@microsoft.com>
Date: Tue, 7 Apr 2020 09:01:43 -0500
Subject: [PATCH] maybe it's because we're treating the foreground as having an
 alpha?

---
 src/renderer/dx/DxRenderer.cpp | 21 ++++++++++++++-------
 src/renderer/dx/DxRenderer.hpp |  2 +-
 2 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/src/renderer/dx/DxRenderer.cpp b/src/renderer/dx/DxRenderer.cpp
index 77c5bffb755..6829e88674e 100644
--- a/src/renderer/dx/DxRenderer.cpp
+++ b/src/renderer/dx/DxRenderer.cpp
@@ -1282,7 +1282,7 @@ void DxEngine::_InvalidOr(RECT rc) noexcept
     const auto existingColor = _d2dBrushForeground->GetColor();
     const auto restoreBrushOnExit = wil::scope_exit([&]() noexcept { _d2dBrushForeground->SetColor(existingColor); });
 
-    _d2dBrushForeground->SetColor(_ColorFFromColorRef(color));
+    _d2dBrushForeground->SetColor(_ColorFFromColorRef(color, false));
 
     const auto font = _GetFontSize();
     D2D_POINT_2F target;
@@ -1549,7 +1549,7 @@ CATCH_RETURN()
                                                      const ExtendedAttributes /*extendedAttrs*/,
                                                      bool const isSettingDefaultBrushes) noexcept
 {
-    _foregroundColor = _ColorFFromColorRef(colorForeground);
+    _foregroundColor = _ColorFFromColorRef(colorForeground, false);
     _backgroundColor = _ColorFFromColorRef(colorBackground);
 
     _d2dBrushForeground->SetColor(_foregroundColor);
@@ -2128,7 +2128,7 @@ float DxEngine::GetScaling() const noexcept
 // - color - GDI color
 // Return Value:
 // - D2D color
-[[nodiscard]] D2D1_COLOR_F DxEngine::_ColorFFromColorRef(const COLORREF color) noexcept
+[[nodiscard]] D2D1_COLOR_F DxEngine::_ColorFFromColorRef(const COLORREF color, const bool useAlpha) noexcept
 {
     // Converts BGR color order to RGB.
     const UINT32 rgb = ((color & 0x0000FF) << 16) | (color & 0x00FF00) | ((color & 0xFF0000) >> 16);
@@ -2141,11 +2141,18 @@ float DxEngine::GetScaling() const noexcept
     }
     case SwapChainMode::ForComposition:
     {
-        // Get the A value we've snuck into the highest byte
-        const BYTE a = ((color >> 24) & 0xFF);
-        const float aFloat = a / 255.0f;
+        if (useAlpha)
+        {
+            // Get the A value we've snuck into the highest byte
+            const BYTE a = ((color >> 24) & 0xFF);
+            const float aFloat = a / 255.0f;
 
-        return D2D1::ColorF(rgb, aFloat);
+            return D2D1::ColorF(rgb, aFloat);
+        }
+        else
+        {
+            return D2D1::ColorF(rgb, 1.0f);
+        }
     }
     default:
         FAIL_FAST_HR(E_NOTIMPL);
diff --git a/src/renderer/dx/DxRenderer.hpp b/src/renderer/dx/DxRenderer.hpp
index b8521d9b1ee..0ca9c8b1a92 100644
--- a/src/renderer/dx/DxRenderer.hpp
+++ b/src/renderer/dx/DxRenderer.hpp
@@ -248,7 +248,7 @@ namespace Microsoft::Console::Render
 
         [[nodiscard]] SIZE _GetClientSize() const noexcept;
 
-        [[nodiscard]] D2D1_COLOR_F _ColorFFromColorRef(const COLORREF color) noexcept;
+        [[nodiscard]] D2D1_COLOR_F _ColorFFromColorRef(const COLORREF color, const bool useAlpha = true) noexcept;
 
         // Routine Description:
         // - Helps convert a Direct2D ColorF into a DXGI RGBA