From 1aca4a9ff5a4c42127c2107c77a2e7c3edb2347c Mon Sep 17 00:00:00 2001
From: Benau <Benau@users.noreply.github.com>
Date: Sun, 30 Jun 2019 15:42:22 +0800
Subject: [PATCH] Fix artifacts in the begining of race by raytracer reflexion

---
 src/graphics/rtts.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/graphics/rtts.cpp b/src/graphics/rtts.cpp
index f6cd2eb8b..a6d43a1f5 100644
--- a/src/graphics/rtts.cpp
+++ b/src/graphics/rtts.cpp
@@ -300,6 +300,11 @@ RTT::RTT(unsigned int width, unsigned int height, float rtt_scale,
         getFBO(FBO_HALF1_R).bind();
         glClearColor(1., 1., 1., 1.);
         glClear(GL_COLOR_BUFFER_BIT);
+        // Raytracer reflexion use previous frame color frame buffer, so we clear it before to avoid
+        // artifacts in the begining of race
+        getFBO(FBO_COLORS).bind();
+        glClearColor(1., 1., 1., 1.);
+        glClear(GL_COLOR_BUFFER_BIT);
         getFBO(FBO_HALF1).bind();
         glClearColor(0., 0., 0., 0.);
         glClear(GL_COLOR_BUFFER_BIT);