ecere/gfx/drivers/GL: Automatically flushing matrices before switchin…

…g shaders - Matrix stacks get mixed up otherwise resulting in confusion
ecere · Jan 25, 2022 · 5a88997 · 5a88997
1 parent f298ea9
commit 5a88997
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/ecere/src/gfx/drivers/gl3/shaders.ec b/ecere/src/gfx/drivers/gl3/shaders.ec
@@ -313,7 +313,10 @@ public:
       if(!glCaps_shaders) return false;
 
       if(activeShader != this)
+      {
+         GLFlushMatrices(); // Must flush matrices before switching shader otherwise the matrix stacks may get mixed up
          activeShader = this;
+      }
 
       result = true;
       if(activeState != state || !shader)