Add error logging if shader compilation failure.

3 files changed, 14 insertions, 0 deletions

diff --git a/src/graphicsmanager.cpp b/src/graphicsmanager.cpp
index 4661563e2..bc836d381 100644
--- a/src/graphicsmanager.cpp
+++ b/src/graphicsmanager.cpp
@@ -1188,6 +1188,13 @@ std::string GraphicsManager::errorToString(const GLenum error)
     return "";
 }
 
+void GraphicsManager::logError()
+{
+    const GLenum error = GraphicsManager::getLastError();
+    if (error != GL_NO_ERROR)
+        logger->log(errorToString(error));
+}
+
 void GraphicsManager::detectVideoSettings()
 {
     config.setValue("videodetected", true);
diff --git a/src/graphicsmanager.h b/src/graphicsmanager.h
index 963e8dbb7..a0af8c41b 100644
--- a/src/graphicsmanager.h
+++ b/src/graphicsmanager.h
@@ -156,6 +156,8 @@ class GraphicsManager final
 
         static std::string errorToString(const GLenum error) A_WARN_UNUSED;
 
+        static void logError();
+
         void updateDebugLog() const;
 
         std::string getGLVersion() const
diff --git a/src/render/modernopenglgraphics.cpp b/src/render/modernopenglgraphics.cpp
index a166f64b9..96ce5e1ef 100644
--- a/src/render/modernopenglgraphics.cpp
+++ b/src/render/modernopenglgraphics.cpp
@@ -162,6 +162,11 @@ void ModernOpenGLGraphics::postInit()
 
     logger->log("Compiling shaders");
     mProgram = shaders.getSimpleProgram();
+    if (!mProgram)
+    {
+        graphicsManager.logError();
+        logger->safeError("Shader creation error. See manaplus.log.");
+    }
     mProgramId = mProgram->getProgramId();
     if (!mProgram)
         logger->error("Shaders compilation error.");