From 4af61f9c009def0ea53c4846010bdc89eaa4cc97 Mon Sep 17 00:00:00 2001
From: Swung0x48 <swung0x48@outlook.com>
Date: Sat, 22 Nov 2025 18:15:02 +0800
Subject: [PATCH] [Feat] (MG_Util/ShaderTranspiler): remove noperspective in
 preprocessing

---
 .../MG_Util/ShaderTranspiler/ShaderSourceProcessor.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/MobileGL/MG_Util/ShaderTranspiler/ShaderSourceProcessor.cpp b/MobileGL/MG_Util/ShaderTranspiler/ShaderSourceProcessor.cpp
index 682ad838..9065b744 100644
--- a/MobileGL/MG_Util/ShaderTranspiler/ShaderSourceProcessor.cpp
+++ b/MobileGL/MG_Util/ShaderTranspiler/ShaderSourceProcessor.cpp
@@ -22,6 +22,16 @@ namespace MobileGL {
                     linedirPos = source.find("#line", linedirPos);
                 }
 
+                // remove "noperspective"
+                const char* str_np = "noperspective";
+                const SizeT len_np = strlen(str_np);
+                SizeT noperspectivePos = source.find(str_np);
+                while (noperspectivePos != std::string::npos) {
+                    // + length of "\n"
+                    source = source.replace(noperspectivePos, len_np, "");
+                    noperspectivePos = source.find(str_np);
+                }
+
                 // force #version
                 ShaderProfile profile = ShaderProfile::Core;
                 SizeT versionPos = source.find("#version");