[Fix] (MG_State/ProgramState): Handle version directive in shader source.

2026-09-08 12:18:30 +09:00 · 2025-11-01 10:07:36 +08:00
parent 9b0589840b
commit 8da681c720
4 changed files with 66 additions and 0 deletions
@@ -0,0 +1,45 @@
+#include "ShaderSourceProcessor.h"
+
+namespace MobileGL {
+    namespace MG_Util {
+        namespace ShaderTranspiler {
+            void PreprocessShaderSource(ShaderStage stage, String& source) {
+                ShaderProfile profile = ShaderProfile::Core;
+                SizeT versionPos = source.find("#version");
+
+                if (versionPos != String::npos) {
+                    SizeT lineEnd = source.find('\n', versionPos);
+                    String versionLine = source.substr(versionPos, lineEnd - versionPos);
+
+                    if (versionLine.find("ES") != String::npos)
+                        profile = ShaderProfile::ES;
+                    else if (versionLine.find("compatibility") != String::npos)
+                        profile = ShaderProfile::Compatibility;
+                    else
+                        profile = ShaderProfile::Core;
+                } else {
+                    profile = ShaderProfile::Core;
+                    source.insert(0, "#version 460 core\n");
+                    return;
+                }
+
+                SizeT firstLineEnd = source.find('\n');
+
+                if (profile != ShaderProfile::ES) {
+                    constexpr const char* versionDirectiveCore = "#version 460 core\n";
+                    constexpr const char* versionDirectiveCompat = "#version 460 compatibility\n";
+
+                    const char* replacement =
+                        (profile == ShaderProfile::Compatibility) ? versionDirectiveCompat : versionDirectiveCore;
+
+                    if (firstLineEnd != std::string::npos) {
+                        source.replace(0, firstLineEnd + 1, replacement);
+                    } else {
+                        source = replacement;
+                    }
+                }
+            }
+
+        } // namespace ShaderTranspiler
+    } // namespace MG_Util
+} // namespace MobileGL