From 52381d5afa11b43a43e8ee35c85889c0b3593872 Mon Sep 17 00:00:00 2001
From: MihailRis <mexaruc@gmail.com>
Date: Sat, 20 Jul 2024 15:36:30 +0300
Subject: [PATCH] feat: preprocessing glsl header files

---
 src/coders/GLSLExtension.cpp | 13 ++++++++++---
 src/coders/GLSLExtension.hpp |  3 ++-
 2 files changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/coders/GLSLExtension.cpp b/src/coders/GLSLExtension.cpp
index 1e25c934..cce84e8c 100644
--- a/src/coders/GLSLExtension.cpp
+++ b/src/coders/GLSLExtension.cpp
@@ -23,7 +23,8 @@ void GLSLExtension::setPaths(const ResPaths* paths) {
 void GLSLExtension::loadHeader(const std::string& name) {
     fs::path file = paths->find("shaders/lib/"+name+".glsl");
     std::string source = files::read_string(file);
-    addHeader(name, source);
+    addHeader(name, "");
+    addHeader(name, process(file, source, true));
 }
 
 void GLSLExtension::addHeader(const std::string& name, std::string source) {
@@ -84,11 +85,13 @@ inline void source_line(std::stringstream& ss, uint linenum) {
     ss << "#line " << linenum << "\n";
 }
 
-std::string GLSLExtension::process(const fs::path& file, const std::string& source) {
+std::string GLSLExtension::process(const fs::path& file, const std::string& source, bool header) {
     std::stringstream ss;
     size_t pos = 0;
     uint linenum = 1;
-    ss << "#version " << version << '\n';
+    if (!header) {
+        ss << "#version " << version << '\n';
+    }
     for (auto& entry : defines) {
         ss << "#define " << entry.first << " " << entry.second << '\n';
     }
@@ -138,5 +141,9 @@ std::string GLSLExtension::process(const fs::path& file, const std::string& sour
         ss << source.substr(pos, endline+1-pos);
         pos = endline+1;
     }
+    if (!header) {
+        std::cout << " ========================================================== " << file.u8string() << std::endl;
+        std::cout << ss.str() << std::endl;
+    }
     return ss.str();    
 }
diff --git a/src/coders/GLSLExtension.hpp b/src/coders/GLSLExtension.hpp
index 98884c28..1c51eec3 100644
--- a/src/coders/GLSLExtension.hpp
+++ b/src/coders/GLSLExtension.hpp
@@ -31,7 +31,8 @@ public:
 
     std::string process(
         const std::filesystem::path& file, 
-        const std::string& source
+        const std::string& source,
+        bool header=false
     );
 };