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-rw-r--r--libvo/vo_gl.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/libvo/vo_gl.c b/libvo/vo_gl.c
index c3c4449eb0..ab2cff9c08 100644
--- a/libvo/vo_gl.c
+++ b/libvo/vo_gl.c
@@ -743,6 +743,11 @@ static int preinit(const char *arg)
" 3: use fragment program with gamma correction.\n"
" 4: use fragment program with gamma correction via lookup.\n"
" 5: use ATI-specific method (for older cards).\n"
+ " lscale=<n>\n"
+ " 0: use standard bilinear scaling for luma.\n"
+ " 1: use improved bicubic scaling for luma.\n"
+ " cscale=<n>\n"
+ " as lscale but for chroma (2x slower with little visible effect).\n"
" customprog=<filename>\n"
" use a custom YUV conversion program\n"
" customtex=<filename>\n"