Merge remote repo native into ext/native/.

ext/native/gfx/gl_debug_log.cpp

@@ -0,0 +1,54 @@
+#include "gfx/gl_common.h"
+#include "base/logging.h"
+
+void glCheckzor(const char *file, int line) {
+	GLenum err = glGetError();
+	if (err != GL_NO_ERROR) {
+		ELOG("GL error on line %i in %s: %i (%04x)", line, file, (int)err, (int)err);
+	}
+}
+
+#if !defined(USING_GLES2)
+#if 0
+void log_callback(GLenum source, GLenum type,
+	GLuint id,
+	GLenum severity,
+	GLsizei length,
+	const GLchar* message,
+	GLvoid* userParam) {
+		const char *src = "unknown";
+		switch (source) {
+		case GL_DEBUG_SOURCE_API_GL_ARB:
+			src = "GL";
+			break;
+		case GL_DEBUG_SOURCE_SHADER_COMPILER_ARB:
+			src = "GLSL";
+			break;
+		case GL_DEBUG_SOURCE_WINDOW_SYSTEM_ARB:
+			src = "X";
+			break;
+		default:
+			break;
+		}
+		switch (type) {
+		case GL_DEBUG_TYPE_ERROR_ARB:
+		case GL_DEBUG_TYPE_UNDEFINED_BEHAVIOR_ARB:
+			ELOG("%s: %s", src, message);
+			break;
+		default:
+			ILOG("%s: %s", src, message);
+			break;
+		}
+}
+#endif
+#endif
+
+void gl_log_enable() {
+#if !defined(USING_GLES2)
+#if 0
+	glEnable(DEBUG_OUTPUT_SYNCHRONOUS_ARB);	// TODO: Look into disabling, for more perf
+	glDebugMessageCallback(&log_callback, 0);
+	glDebugMessageControl(GL_DONT_CARE, GL_DONT_CARE, GL_DONT_CARE, 0, 0, GL_TRUE);
+#endif
+#endif
+}