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/makesrna/intern/rna_image_api.c b/source/blender/makesrna/intern/rna_image_api.c
index cc1a0cff08b..7b5612ef8e7 100644
--- a/source/blender/makesrna/intern/rna_image_api.c
+++ b/source/blender/makesrna/intern/rna_image_api.c
@@ -222,7 +222,7 @@ static int rna_Image_gl_load(Image *image, ReportList *reports, int frame)
   BKE_imageuser_default(&iuser);
   iuser.framenr = frame;
 
-  GPUTexture *tex = GPU_texture_from_blender(image, &iuser, GL_TEXTURE_2D);
+  GPUTexture *tex = GPU_texture_from_blender(image, &iuser, NULL, GL_TEXTURE_2D);
 
   if (tex == NULL) {
     BKE_reportf(reports, RPT_ERROR, "Failed to load image texture '%s'", image->id.name + 2);