From b225af0ef95b886abf20a4c450b5a0b3ba351730 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Thu, 29 Jan 2026 18:04:34 +0000
Subject: Fix search/replace of GL_* macros in glsl

---
 gfx/gl/shader.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'gfx/gl')

diff --git a/gfx/gl/shader.cpp b/gfx/gl/shader.cpp
index cc6473e..319726f 100644
--- a/gfx/gl/shader.cpp
+++ b/gfx/gl/shader.cpp
@@ -64,7 +64,7 @@ Shader::compile() const
 	};
 	if (lookups) {
 		std::basic_string<GLchar> textMod {text};
-		for (const auto & match : ctre::search_all<R"(\bGL_[A-Z_]+\b)">(textMod)) {
+		while (const auto match = ctre::search<R"(\bGL_[A-Z_]+\b)">(textMod)) {
 			if (const auto * const lookup = std::find_if(LOOKUPS.begin(), LOOKUPS.end(),
 						[&match](const auto & lookup) {
 							return std::get<std::string_view>(lookup) == match;
@@ -73,6 +73,9 @@ Shader::compile() const
 				const auto & [name, pname, getFunction] = *lookup;
 				textMod.replace(match.begin(), match.end(), getFunction(pname));
 			}
+			else {
+				throw std::domain_error(std::format("Unknown shader constant: {}", match.view()));
+			}
 		}
 		source(textMod.c_str(), static_cast<GLint>(textMod.length()));
 	}
-- 
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