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-rw-r--r--video/out/opengl/common.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/video/out/opengl/common.h b/video/out/opengl/common.h
index 35535322ad..a6b02c9366 100644
--- a/video/out/opengl/common.h
+++ b/video/out/opengl/common.h
@@ -88,6 +88,11 @@ struct GL {
int mpgl_caps; // Bitfield of MPGL_CAP_* constants
bool debug_context; // use of e.g. GLX_CONTEXT_DEBUG_BIT_ARB
+ // Set to false if the implementation follows normal GL semantics, which is
+ // upside down. Set to true if it does *not*, i.e. if rendering is right
+ // side up
+ bool flipped;
+
// Copy of function pointer used to load GL.
// Caution: Not necessarily valid to use after VO init has completed!
void *(*get_fn)(void *ctx, const char *n);