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diff --git a/glamor/glamor_fbo.c b/glamor/glamor_fbo.c
index a531f60..f4f8749 100644
--- a/glamor/glamor_fbo.c
+++ b/glamor/glamor_fbo.c
@@ -352,8 +352,10 @@ _glamor_create_tex(glamor_screen_private *glamor_priv,
glBindTexture(GL_TEXTURE_2D, tex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
- if (format == glamor_priv->one_channel_format && format == GL_RED)
+ if (format == glamor_priv->one_channel_format && format == GL_RED) {
+ glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_R, GL_ZERO);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_SWIZZLE_A, GL_RED);
+ }
glamor_priv->suppress_gl_out_of_memory_logging = true;
glTexImage2D(GL_TEXTURE_2D, 0, format, w, h, 0,
format, GL_UNSIGNED_BYTE, NULL);
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