Initial commit

graphics/opengl/debug.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "graphics/opengl/debug.h"
+
+#include "common/str.h"
+#include "common/textconsole.h"
+
+#include "graphics/opengl/system_headers.h"
+
+#if defined(USE_OPENGL)
+
+namespace OpenGL {
+
+namespace {
+Common::String getGLErrStr(GLenum error) {
+	switch (error) {
+	case GL_INVALID_ENUM:
+		return "GL_INVALID_ENUM";
+	case GL_INVALID_VALUE:
+		return "GL_INVALID_VALUE";
+	case GL_INVALID_OPERATION:
+		return "GL_INVALID_OPERATION";
+	case GL_STACK_OVERFLOW:
+		return "GL_STACK_OVERFLOW";
+	case GL_STACK_UNDERFLOW:
+		return "GL_STACK_UNDERFLOW";
+	case GL_OUT_OF_MEMORY:
+		return "GL_OUT_OF_MEMORY";
+	default:
+		break;
+	}
+
+	return Common::String::format("(Unknown GL error code 0x%X)", error);
+}
+} // End of anonymous namespace
+
+void clearGLError() {
+	GLenum error;
+
+	while ((error = glGetError()) != GL_NO_ERROR)
+		;
+}
+
+bool checkGLError(const char *expr, const char *file, int line) {
+	bool ret = false;
+	GLenum error;
+
+	while ((error = glGetError()) != GL_NO_ERROR) {
+		// We cannot use error here because we do not know whether we have a
+		// working screen or not.
+		warning("GL ERROR: %s on %s (%s:%d)", getGLErrStr(error).c_str(), expr, file, line);
+		ret = true;
+	}
+	return ret;
+}
+} // End of namespace OpenGL
+
+#endif