diff --git a/src/rhi/gl3_core/gl3_core_rhi.cpp b/src/rhi/gl3_core/gl3_core_rhi.cpp
index ce3df3b05..18985ac43 100644
--- a/src/rhi/gl3_core/gl3_core_rhi.cpp
+++ b/src/rhi/gl3_core/gl3_core_rhi.cpp
@@ -1759,6 +1759,14 @@ Rect GlCoreRhi::get_renderbuffer_size(Handle<Renderbuffer> renderbuffer)
 	return ret;
 }
 
+uint32_t GlCoreRhi::get_buffer_size(Handle<Buffer> buffer)
+{
+	SRB2_ASSERT(buffer_slab_.is_valid(buffer));
+	auto& buf = buffer_slab_[buffer];
+
+	return buf.desc.size;
+}
+
 void GlCoreRhi::finish()
 {
 	SRB2_ASSERT(graphics_context_active_ == false);
diff --git a/src/rhi/gl3_core/gl3_core_rhi.hpp b/src/rhi/gl3_core/gl3_core_rhi.hpp
index 633e43754..8814ac36f 100644
--- a/src/rhi/gl3_core/gl3_core_rhi.hpp
+++ b/src/rhi/gl3_core/gl3_core_rhi.hpp
@@ -184,6 +184,7 @@ public:
 
 	virtual TextureDetails get_texture_details(Handle<Texture> texture) override;
 	virtual Rect get_renderbuffer_size(Handle<Renderbuffer> renderbuffer) override;
+	virtual uint32_t get_buffer_size(Handle<Buffer> buffer) override;
 
 	virtual Handle<TransferContext> begin_transfer() override;
 	virtual void end_transfer(Handle<TransferContext> handle) override;
diff --git a/src/rhi/rhi.hpp b/src/rhi/rhi.hpp
index f947fa201..aeb62e69c 100644
--- a/src/rhi/rhi.hpp
+++ b/src/rhi/rhi.hpp
@@ -608,6 +608,7 @@ struct Rhi
 
 	virtual TextureDetails get_texture_details(Handle<Texture> texture) = 0;
 	virtual Rect get_renderbuffer_size(Handle<Renderbuffer> renderbuffer) = 0;
+	virtual uint32_t get_buffer_size(Handle<Buffer> buffer) = 0;
 
 	virtual Handle<TransferContext> begin_transfer() = 0;
 	virtual void end_transfer(Handle<TransferContext> handle) = 0;