From: Mikko Rasa <tdb@tdb.fi>
Date: Tue, 27 Apr 2021 10:28:04 +0000 (+0300)
Subject: Check if any shader data has changed when applying Renderer state
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=32fe9849a37a1917ca5b450ea9dd192b268bc16f

Check if any shader data has changed when applying Renderer state
---

diff --git a/source/render/renderer.cpp b/source/render/renderer.cpp
index dc41eb11..2485a9e2 100644
--- a/source/render/renderer.cpp
+++ b/source/render/renderer.cpp
@@ -391,9 +391,12 @@ void Renderer::apply_state()
 		changed &= ~STANDARD_SHDATA;
 	}
 
+	bool shdata_changed = changed&SHADER_DATA;
+	for(vector<BoundProgramData>::const_iterator i=shdata_stack.begin(); (!shdata_changed && i!=shdata_stack.end()); ++i)
+		shdata_changed = (i->shdata->get_generation()!=i->generation);
 	bool extra_shdata = (shdata_stack.size()>state->shdata_count);
 
-	if((changed&SHADER_DATA) || shprog_changed || extra_shdata)
+	if(shdata_changed || shprog_changed || extra_shdata)
 	{
 		if(extra_shdata)
 			shdata_stack.erase(shdata_stack.begin()+state->shdata_count, shdata_stack.end());