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-rw-r--r--src/openglgraphics.cpp5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/openglgraphics.cpp b/src/openglgraphics.cpp
index 509107d5..375c43a0 100644
--- a/src/openglgraphics.cpp
+++ b/src/openglgraphics.cpp
@@ -25,6 +25,11 @@
#ifdef USE_OPENGL
+#ifndef GL_TEXTURE_RECTANGLE_ARB
+#define GL_TEXTURE_RECTANGLE_ARB 0x84F5
+#define GL_MAX_RECTANGLE_TEXTURE_SIZE_ARB 0x84F8
+#endif
+
#include "openglgraphics.h"
#include <cstring>