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glvideomixer: fix the default blend modes for unpremultipled alpha
authorMatthew Waters <matthew@centricular.com>
Thu, 4 Oct 2018 13:45:49 +0000 (23:45 +1000)
committerMatthew Waters <matthew@centricular.com>
Thu, 4 Oct 2018 15:18:59 +0000 (01:18 +1000)
Alpha in GStreamer is unpremultiplied

ext/gl/gstglvideomixer.c patch | blob | history

diff --git a/ext/gl/gstglvideomixer.c b/ext/gl/gstglvideomixer.c
index 2256e54..0306d22 100644 (file)
--- a/ext/gl/gstglvideomixer.c
+++ b/ext/gl/gstglvideomixer.c
@@ -162,7 +162,7 @@ gst_gl_video_mixer_blend_function_get_type (void)
 #define DEFAULT_PAD_BLEND_EQUATION_RGB GST_GL_VIDEO_MIXER_BLEND_EQUATION_ADD
 #define DEFAULT_PAD_BLEND_EQUATION_ALPHA GST_GL_VIDEO_MIXER_BLEND_EQUATION_ADD
 #define DEFAULT_PAD_BLEND_FUNCTION_SRC_RGB GST_GL_VIDEO_MIXER_BLEND_FUNCTION_SRC_ALPHA
-#define DEFAULT_PAD_BLEND_FUNCTION_SRC_ALPHA GST_GL_VIDEO_MIXER_BLEND_FUNCTION_SRC_ALPHA
+#define DEFAULT_PAD_BLEND_FUNCTION_SRC_ALPHA GST_GL_VIDEO_MIXER_BLEND_FUNCTION_ONE
 #define DEFAULT_PAD_BLEND_FUNCTION_DST_RGB GST_GL_VIDEO_MIXER_BLEND_FUNCTION_ONE_MINUS_SRC_ALPHA
 #define DEFAULT_PAD_BLEND_FUNCTION_DST_ALPHA GST_GL_VIDEO_MIXER_BLEND_FUNCTION_ONE_MINUS_SRC_ALPHA
 
Domain: Multimedia / Media Common;