From 4d4fac074affa4b5fdc4d9f5199e64ab181b9ae8 Mon Sep 17 00:00:00 2001
From: Tadej Novak <tadej@tano.si>
Date: Mon, 20 Oct 2025 07:15:46 +0200
Subject: [PATCH] Compatibility fixes for WebAssembly and WebGL 2 (#3752)

---
 src/mbgl/gl/uniform_buffer_gl.cpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/mbgl/gl/uniform_buffer_gl.cpp b/src/mbgl/gl/uniform_buffer_gl.cpp
index 200a945c6..af3bf4b76 100644
--- a/src/mbgl/gl/uniform_buffer_gl.cpp
+++ b/src/mbgl/gl/uniform_buffer_gl.cpp
@@ -41,8 +41,14 @@ UniformBufferGL::UniformBufferGL(Context& context_, const void* data_, std::size
     context.renderingStats().numBuffers++;
     context.renderingStats().memBuffers += size;
 
+#ifdef __EMSCRIPTEN__
+    constexpr bool forceDisableManagedAllocation{true};
+#else
+    constexpr bool forceDisableManagedAllocation{false};
+#endif
+
     MLN_TRACE_ALLOC_CONST_BUFFER(uniqueDebugId, size_);
-    if (size_ > managedBuffer.allocator.pageSize()) {
+    if (forceDisableManagedAllocation || size_ > managedBuffer.allocator.pageSize()) {
         // Buffer is very large, won't fit in the provided allocator
         MBGL_CHECK_ERROR(glGenBuffers(1, &localID));
         MBGL_CHECK_ERROR(glBindBuffer(GL_UNIFORM_BUFFER, localID));