gpu: bound null storage bindings to zero bytes

src/graphics/host_gpu/renderer/pipeline/descriptors.cpp

@@ -801,8 +801,9 @@ void RenderExecutor::RebindBuffers(PreparedBindings& prepared) {
 		prepared.buffers[index] = NativeStorageBuffer(m_context, prepared.buffer_sources[index],
 		                                              resource, buffer_offset);
 		pack_memory_offset(index, buffer_offset);
+		// Null bindings allow 0 bytes, not the shared null buffer's 16, so no store reaches it.
 		prepared.shader_data[layout.MemorySizeDword() + index] =
-		    static_cast<uint32_t>(prepared.buffers[index].range);
+		    static_cast<uint32_t>(prepared.buffer_sources[index].size + buffer_offset);
 	}
 	if (layout.descriptor_counts[static_cast<size_t>(BindingKind::FlattenedSrt)] != 0) {
 		prepared.flattened_srt = NativeUpload(m_context, snapshot.flattened_srt);