From 2ee9c77ad76449314d28d62f60e10d80039c2353 Mon Sep 17 00:00:00 2001
From: "Steinar H. Gunderson" <sgunderson@bigfoot.com>
Date: Mon, 21 Jan 2013 22:09:51 +0100
Subject: [PATCH 1/1] In OverlayEffectTest, handle that RGB on zero alpha is
 undefined.

Trickled by llvmpipe.
---
 overlay_effect_test.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/overlay_effect_test.cpp b/overlay_effect_test.cpp
index 865d392..d0867a1 100644
--- a/overlay_effect_test.cpp
+++ b/overlay_effect_test.cpp
@@ -42,7 +42,7 @@ TEST(OverlayEffectTest, BottomDominatesTopWhenTopIsTransparent) {
 	expect_equal(data_a, out_data, 4, 1);
 }
 
-TEST(OverlayEffectTest, ZeroAlphaBecomesAllZero) {
+TEST(OverlayEffectTest, ZeroAlphaRemainsZeroAlpha) {
 	float data_a[] = {
 		0.0f, 0.25f, 0.5f, 0.0f
 	};
@@ -60,7 +60,7 @@ TEST(OverlayEffectTest, ZeroAlphaBecomesAllZero) {
 	tester.get_chain()->add_effect(new OverlayEffect(), input1, input2);
 	tester.run(out_data, GL_BGRA, COLORSPACE_sRGB, GAMMA_LINEAR);
 
-	expect_equal(expected_data, out_data, 4, 1);
+	EXPECT_FLOAT_EQ(0.0f, expected_data[3]);
 }
 
 // This is tested against what Photoshop does: (255,0,128, 0.25) over (128,255,0, 0.5)
-- 
2.39.2