Merge commit '67f2a688143b644f99360565a9f36c61a5f052e9'

[ffmpeg] / libavdevice / opengl_enc_shaders.h

diff --git a/libavdevice/opengl_enc_shaders.h b/libavdevice/opengl_enc_shaders.h
index 6378dfb8cc0333c5b78cc65a5b99d843352a3abd..ed8b3d30413898f997b9d361af934451695aee2f 100644 (file)
--- a/libavdevice/opengl_enc_shaders.h
+++ b/libavdevice/opengl_enc_shaders.h
@@ -181,7 +181,7 @@ static const char * const FF_OPENGL_FRAGMENT_SHADER_GRAY =
     "varying vec2 texture_coordinate;"
     "void main()"
     "{"
-        "float c = texture2D(u_texture0, texture_coordinate);"
+        "float c = texture2D(u_texture0, texture_coordinate).r;"
         "gl_FragColor = vec4(c, c, c, 1.0);"
     "}";