Fix T73188: RenderResult as Camera BG Image

In blender 2.79 you could use a render result as a camera background
image. This is useful during layout/compositing. During Blender 2.80
development there were 2 issues introduced that removed this feature.

* to receive a render result the image required a lock. This lock wasn't passed and therefore no image was read from the result. Generating an GPUTexture from an Blender image also didn't do the locking.
* the iuser->scene field wasn't set what is required for render results.

This change adds an optional `ibuf` parameter to `GPU_texture_from_blender` that can be passed when available.

Reviewed By: fclem, brecht

Differential Revision: https://developer.blender.org/D6684

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/draw/intern/draw_manager_data.c b/source/blender/draw/intern/draw_manager_data.c
index c6fc244121c..f9a6b663900 100644
--- a/source/blender/draw/intern/draw_manager_data.c
+++ b/source/blender/draw/intern/draw_manager_data.c
@@ -1226,7 +1226,7 @@ static DRWShadingGroup *drw_shgroup_material_inputs(DRWShadingGroup *grp,
         else {
           textarget = GL_TEXTURE_2D;
         }
-        *tex_ref = tex = GPU_texture_from_blender(input->ima, input->iuser, textarget);
+        *tex_ref = tex = GPU_texture_from_blender(input->ima, input->iuser, NULL, textarget);
 
         GPU_texture_ref(tex);
       }