From 3d91a7fa83e29989ac81764e5c0793bc1960305c Mon Sep 17 00:00:00 2001
From: Marko Njezic <unknown>
Date: Wed, 29 Feb 2012 21:22:42 +0100
Subject: Bug #3495791. Create auxiliary surfaces on Direct2D without alpha
 channel, as no underlying code expects them to be transparent. This will make
 text drawing use the same anti-aliasing mode no matter if using buffered mode
 or not.

---
 win32/PlatWin.cxx | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'win32')

diff --git a/win32/PlatWin.cxx b/win32/PlatWin.cxx
index 15b3655bf..5884cd4f2 100644
--- a/win32/PlatWin.cxx
+++ b/win32/PlatWin.cxx
@@ -1279,8 +1279,11 @@ void SurfaceD2D::InitPixMap(int width, int height, Surface *surface_, WindowID)
 	SetScale();
 	SurfaceD2D *psurfOther = static_cast<SurfaceD2D *>(surface_);
 	ID2D1BitmapRenderTarget *pCompatibleRenderTarget = NULL;
+	D2D1_SIZE_F desiredSize = D2D1::SizeF(width, height);
+	D2D1_PIXEL_FORMAT desiredFormat = psurfOther->pRenderTarget->GetPixelFormat();
+	desiredFormat.alphaMode = D2D1_ALPHA_MODE_IGNORE;
 	HRESULT hr = psurfOther->pRenderTarget->CreateCompatibleRenderTarget(
-		D2D1::SizeF(width, height), &pCompatibleRenderTarget);
+		&desiredSize, NULL, &desiredFormat, D2D1_COMPATIBLE_RENDER_TARGET_OPTIONS_NONE, &pCompatibleRenderTarget);
 	if (SUCCEEDED(hr)) {
 		pRenderTarget = pCompatibleRenderTarget;
 		pRenderTarget->BeginDraw();
-- 
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