OpenGL: Print more debug info at init time

source/Irrlicht/OpenGL/Driver.cpp

@@ -205,7 +205,7 @@ COpenGL3DriverBase::~COpenGL3DriverBase()
 
 		// print renderer information
 		VendorName = GL.GetString(GL_VENDOR);
-		os::Printer::log(VendorName.c_str(), ELL_INFORMATION);
+		os::Printer::log("Vendor", VendorName.c_str(), ELL_INFORMATION);
 
 		Version = getVersionFromOpenGL();
 	}
@@ -222,6 +222,7 @@ COpenGL3DriverBase::~COpenGL3DriverBase()
 	{
 		initVersion();
 		initFeatures();
+		printTextureFormats();
 
 		// reset cache handler
 		delete CacheHandler;
@@ -276,6 +277,22 @@ COpenGL3DriverBase::~COpenGL3DriverBase()
 		return true;
 	}
 
+	void COpenGL3DriverBase::printTextureFormats()
+	{
+		char buf[128];
+		for (u32 i = 0; i < static_cast<u32>(ECF_UNKNOWN); i++) {
+			auto &info = TextureFormats[i];
+			if (!info.InternalFormat) {
+				snprintf_irr(buf, sizeof(buf), "%s -> unsupported", ColorFormatNames[i]);
+			} else {
+				snprintf_irr(buf, sizeof(buf), "%s -> %#06x %#06x %#06x%s",
+					ColorFormatNames[i], info.InternalFormat, info.PixelFormat,
+					info.PixelType, info.Converter ? " (c)" : "");
+			}
+			os::Printer::log(buf, ELL_DEBUG);
+		}
+	}
+
 	void COpenGL3DriverBase::loadShaderData(const io::path& vertexShaderName, const io::path& fragmentShaderName, c8** vertexShaderData, c8** fragmentShaderData)
 	{
 		io::path vsPath(OGLES2ShaderPath);

source/Irrlicht/OpenGL/Driver.h

@@ -272,7 +272,6 @@ namespace video
 		COpenGL3CacheHandler* getCacheHandler() const;
 
 	protected:
-		//! inits the opengl-es driver
 		virtual bool genericDriverInit(const core::dimension2d<u32>& screenSize, bool stencilBuffer);
 
 		void initVersion();
@@ -391,6 +390,8 @@ private:
 
 		IContextManager* ContextManager;
 
+		void printTextureFormats();
+
 		void addDummyMaterial(E_MATERIAL_TYPE type);
 
 		unsigned QuadIndexCount;

source/Irrlicht/OpenGL/ExtensionHandler.cpp

@@ -9,8 +9,11 @@
 #include "irrString.h"
 #include "SMaterial.h"
 #include "fast_atof.h"
+#include "os.h"
 #include <mt_opengl.h>
 
+// FIXME: this basically duplicates what mt_opengl.h already does
+
 namespace irr
 {
 namespace video
@@ -24,7 +27,7 @@ namespace video
 			pos = next + 1;
 		}
 		addExtension(pos);
-		updateLegacyExtensionList();
+		extensionsLoaded();
 	}
 
 	void COpenGL3ExtensionHandler::initExtensionsNew()
@@ -32,10 +35,10 @@ namespace video
 		int ext_count = GetInteger(GL_NUM_EXTENSIONS);
 		for (int k = 0; k < ext_count; k++)
 			addExtension(reinterpret_cast<const char *>(GL.GetStringi(GL_EXTENSIONS, k)));
-		updateLegacyExtensionList();
+		extensionsLoaded();
 	}
 
-	void COpenGL3ExtensionHandler::addExtension(std::string name) {
+	void COpenGL3ExtensionHandler::addExtension(std::string &&name) {
 		Extensions.emplace(std::move(name));
 	}
 
@@ -43,7 +46,10 @@ namespace video
 		return Extensions.find(name) != Extensions.end();
 	}
 
-	void COpenGL3ExtensionHandler::updateLegacyExtensionList() {
+	void COpenGL3ExtensionHandler::extensionsLoaded() {
+		os::Printer::log((std::string("Loaded ") + std::to_string(Extensions.size()) + " extensions:").c_str(), ELL_DEBUG);
+		for (const auto &it : Extensions)
+			os::Printer::log((std::string("  ") + it).c_str(), ELL_DEBUG);
 		for (size_t j = 0; j < IRR_OGLES_Feature_Count; ++j)
 			FeatureAvailable[j] = queryExtension(getFeatureString(j));
 	}

source/Irrlicht/OpenGL/ExtensionHandler.h

@@ -159,8 +159,8 @@ namespace video
 		bool BlendMinMaxSupported = false;
 
 	private:
-		void addExtension(std::string name);
+		void addExtension(std::string &&name);
-		void updateLegacyExtensionList();
+		void extensionsLoaded();
 
 		std::unordered_set<std::string> Extensions;
 	};