Fix T81026: Image Editor: Alpha (like Bloom) not showing properly

With the new image editor drawing there were was some mutual exclusive
functionality. When rendering the alpha was shown correctly or the pure
emissive colors were shown correctly, but never both. The cause of this
is that the image_gpu did not used the correct alpha mode when generating
gpu textures for non-images (render results, compositors viewer)

The implementation always checked the alpha_mode. Alpha mode is an
attribute for images, but aren't set for non images. This patch adds
a more detailed check to ensure that the gpu texture is premultiplied.

The issue has been tested using several bug report files and production
files.

Reviewed By: Brecht van Lommel

Differential Revision: https://developer.blender.org/D8978

1 files changed, 0 insertions, 0 deletions

diff --git a/release/scripts/addons_contrib b/release/scripts/addons_contrib
-Subproject a52733b58d95ce60ecde95a9eca242e7319c285
+Subproject f2f4a8b3bfa36ee49f7bdb3a1acb40ef4b39ee3