From e1af4abf11ef1600ee686a8fa603506293c554c1 Mon Sep 17 00:00:00 2001
From: rdb <git@rdb.name>
Date: Sun, 7 Oct 2018 21:42:02 +0200
Subject: [PATCH] glgsg: fix sRGB for FBOs created from non-sRGB host window

In this case _current_properties in begin_frame() will not have srgb_color set, as the current props are set by the host window
---
 panda/src/glstuff/glGraphicsBuffer_src.cxx | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/panda/src/glstuff/glGraphicsBuffer_src.cxx b/panda/src/glstuff/glGraphicsBuffer_src.cxx
index 66a9e6d407..eab850bdba 100644
--- a/panda/src/glstuff/glGraphicsBuffer_src.cxx
+++ b/panda/src/glstuff/glGraphicsBuffer_src.cxx
@@ -283,6 +283,13 @@ begin_frame(FrameMode mode, Thread *current_thread) {
     rebuild_bitplanes();
   }
 
+  // The host window may not have had sRGB enabled, so we need to do this.
+#ifndef OPENGLES
+  if (get_fb_properties().get_srgb_color()) {
+    glEnable(GL_FRAMEBUFFER_SRGB);
+  }
+#endif
+
   _gsg->set_current_properties(&get_fb_properties());
   report_my_gl_errors();
   return true;