lavd/opengl_enc_shaders: fix gray* shader

Signed-off-by: Lukasz Marek <lukasz.m.luki@gmail.com>
11 years ago · d3cf9b24cf
parent 05e9e3342f
commit d3cf9b24cf
1 changed files with 1 additions and 1 deletions
--- 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);"
    "}";