1 files changed, 142 insertions, 0 deletions
diff --git a/intern/glew-mx/intern/glew-mx.c b/intern/glew-mx/intern/glew-mx.c
new file mode 100644
index 00000000000..8b0ab42c0c0
--- /dev/null
+++ b/intern/glew-mx/intern/glew-mx.c
@@ -0,0 +1,142 @@
+/*
+ * ***** BEGIN GPL LICENSE BLOCK *****
+ *
+ * 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 2
+ * 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, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ * The Original Code is Copyright (C) 2014 Blender Foundation.
+ * All rights reserved.
+ *
+ * The Original Code is: all of this file.
+ *
+ * Contributor(s): Jason Wilkins
+ *
+ * ***** END GPL LICENSE BLOCK *****
+ */
+
+/** \file glew-mx.c
+ *  \ingroup glew-mx
+ */
+
+#include "glew-mx.h"
+
+#include <stdio.h>
+#include <stdlib.h>
+
+
+#define CASE_CODE_RETURN_STR(code) case code: return #code;
+
+static const char *get_glew_error_enum_string(GLenum error)
+{
+	switch (error) {
+		CASE_CODE_RETURN_STR(GLEW_OK) /* also GLEW_NO_ERROR */
+		CASE_CODE_RETURN_STR(GLEW_ERROR_NO_GL_VERSION)
+		CASE_CODE_RETURN_STR(GLEW_ERROR_GL_VERSION_10_ONLY)
+		CASE_CODE_RETURN_STR(GLEW_ERROR_GLX_VERSION_11_ONLY)
+#ifdef WITH_GLEW_ES
+		CASE_CODE_RETURN_STR(GLEW_ERROR_NOT_GLES_VERSION)
+		CASE_CODE_RETURN_STR(GLEW_ERROR_GLES_VERSION)
+		CASE_CODE_RETURN_STR(GLEW_ERROR_NO_EGL_VERSION)
+		CASE_CODE_RETURN_STR(GLEW_ERROR_EGL_VERSION_10_ONLY)
+#endif
+		default:
+			return NULL;
+	}
+}
+
+
+GLenum glew_chk(GLenum error, const char *file, int line, const char *text)
+{
+	if (error != GLEW_OK) {
+		const char *code = get_glew_error_enum_string(error);
+		const char *msg  = (const char *)glewGetErrorString(error);
+
+#ifndef NDEBUG
+		fprintf(stderr,
+		        "%s(%d):[%s] -> GLEW Error (0x%04X): %s: %s\n",
+		        file, line, text, error,
+		        code ? code : "<no symbol>",
+		        msg  ? msg  : "<no message>");
+#else
+		(void) file;
+		(void) line;
+		(void) text;
+		fprintf(stderr,
+		        "GLEW Error (0x%04X): %s: %s\n",
+		        error,
+		        code ? code : "<no symbol>",
+		        msg  ? msg  : "<no message>");
+#endif
+	}
+
+	return error;
+}
+
+
+#ifdef WITH_GLEW_MX
+MXContext *_mx_context = NULL;
+#endif
+
+
+MXContext *mxCreateContext(void)
+{
+#ifdef WITH_GLEW_MX
+	MXContext* new_ctx = calloc(1, sizeof(MXContext));
+
+	if (new_ctx != NULL) {
+		MXContext* cur_ctx = _mx_context;
+		_mx_context = new_ctx;
+		GLEW_CHK(glewInit());
+		_mx_context = cur_ctx;
+	}
+
+	return new_ctx;
+#else
+	GLEW_CHK(glewInit());
+	return NULL;
+#endif
+}
+
+
+MXContext *mxGetCurrentContext(void)
+{
+#ifdef WITH_GLEW_MX
+	return _mx_context;
+#else
+	return NULL;
+#endif
+}
+
+
+void mxMakeCurrentContext(MXContext *ctx)
+{
+#ifdef WITH_GLEW_MX
+	_mx_context = ctx;
+#else
+	(void)ctx;
+#endif
+}
+
+
+void mxDestroyContext(MXContext *ctx)
+{
+#ifdef WITH_GLEW_MX
+	if (_mx_context == ctx)
+		_mx_context = NULL;
+
+	free(ctx);
+#else
+	(void)ctx;
+#endif
+}