From 5f6a39cabead38d0129049791f6410fdd670b8e2 Mon Sep 17 00:00:00 2001
From: Adrien Destugues <pulkomandy@pulkomandy.tk>
Date: Wed, 23 Jul 2014 16:22:51 +0200
Subject: [PATCH] Add testcase from #2946.

---
 src/tests/servers/app/gradients/main.cpp | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/src/tests/servers/app/gradients/main.cpp b/src/tests/servers/app/gradients/main.cpp
index 7f7d6ab5e9..ebc8a58952 100644
--- a/src/tests/servers/app/gradients/main.cpp
+++ b/src/tests/servers/app/gradients/main.cpp
@@ -67,6 +67,29 @@ public:
 };
 
 
+// Test for https://dev.haiku-os.org/ticket/2946
+// Gradients with an alpha channel are not drawn properly
+class AlphaGradientTest : public Test {
+public:
+	AlphaGradientTest()
+		:
+		Test("Alpha gradient")
+	{
+	}
+
+	virtual void Draw(BView* view, BRect updateRect)
+	{
+		BPoint center(50, 50);
+		float radius = 50.0;
+		BGradientRadial g(center, radius);
+		g.AddColor((rgb_color){ 0, 0, 0, 255 }, 0.0);
+		g.AddColor((rgb_color){ 0, 0, 0, 0 }, 255.0);
+		view->SetDrawingMode(B_OP_ALPHA);
+		view->FillEllipse(center, radius, radius, g);
+	}
+};
+
+
 // #pragma mark -
 
 
@@ -78,6 +101,7 @@ main(int argc, char** argv)
 	TestWindow* window = new TestWindow("Gradient tests");
 
 	window->AddTest(new RadialGradientTest());
+	window->AddTest(new AlphaGradientTest());
 
 	window->SetToTest(0);
 	window->Show();