gl/format: use the unsized format for RGB on GLES2

In GLES2 GL_RGB8 doesn't exist so we cannot use it, use GL_RGB
instead.

https://bugzilla.gnome.org/show_bug.cgi?id=776141

diff --git a/gst-libs/gst/gl/gstglformat.c b/gst-libs/gst/gl/gstglformat.c
index d64c05d..ead990b 100644 (file)
--- a/gst-libs/gst/gl/gstglformat.c
+++ b/gst-libs/gst/gl/gstglformat.c
@@ -277,7 +277,8 @@ gst_gl_sized_gl_format_from_gl_format_type (GstGLContext * context,
     case GST_GL_RGB:
       switch (type) {
         case GL_UNSIGNED_BYTE:
-          return GST_GL_RGB8;
+          return USING_GLES2 (context)
+              && !USING_GLES3 (context) ? GST_GL_RGB : GST_GL_RGB8;
           break;
         case GL_UNSIGNED_SHORT_5_6_5:
           return GST_GL_RGB;