[gtk/gtk-4-2: 33/91] ngl: Fix a rare assertion violation

[Matthias Clasen <matthiasc src gnome org>]

commit d116ba348fcdccc177689cd2c4e55986213b9317
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Apr 12 22:51:01 2021 -0400

    ngl: Fix a rare assertion violation
    
    When we clean up the uniform allocations after a frame,
    it can happen that our space requirements actually increase,
    due to padding that depends on the order of allocations.
    
    Instead of asserting that it doesn't happen, just make
    it work by growing our allocation.
    
    Fixes: #3853

 gsk/ngl/gskngluniformstate.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)
---
diff --git a/gsk/ngl/gskngluniformstate.c b/gsk/ngl/gskngluniformstate.c
index 44270e8fa5..9a70088779 100644
--- a/gsk/ngl/gskngluniformstate.c
+++ b/gsk/ngl/gskngluniformstate.c
@@ -215,7 +215,17 @@ gsk_ngl_uniform_state_end_frame (GskNglUniformState *state)
 
   state->values_pos = allocator;
 
-  g_assert (allocator <= state->values_len);
+  /* It can happen that our space requirements grow due to
+   * difference in order increasing padding. As a pragmatic
+   * solution to this, just increase the allocation to cover
+   * the predefined mappins.
+   */
+  if (allocator > state->values_len)
+    {
+      while (allocator > state->values_len)
+        state->values_len *= 2;
+      state->values_buf = g_realloc (state->values_buf, state->values_len);
+    }
 
   memset (state->apply_hash, 0, sizeof state->apply_hash);
 }