From 74a2f717b3458036b8aea59dd9d78571007e409e Mon Sep 17 00:00:00 2001
From: Thomas Harte <thomas.harte@gmail.com>
Date: Wed, 1 Aug 2018 18:52:42 -0400
Subject: [PATCH] Turns down the composite signal amplitude a little, to help
 colour distinctness.

---
 Machines/AppleII/Video.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Machines/AppleII/Video.cpp b/Machines/AppleII/Video.cpp
index 65c44ee20..80fdb9361 100644
--- a/Machines/AppleII/Video.cpp
+++ b/Machines/AppleII/Video.cpp
@@ -18,7 +18,7 @@ VideoBase::VideoBase() :
 	crt_->set_composite_sampling_function(
 		"float composite_sample(usampler2D sampler, vec2 coordinate, vec2 icoordinate, float phase, float amplitude)"
 		"{"
-			"return texture(sampler, coordinate).r;"
+			"return clamp(texture(sampler, coordinate).r, 0.0, 0.7);"
 		"}");
 
 	// Show only the centre 75% of the TV frame.