Viewport: Auto-Depth rotation ignore transparent image reference empties #76203

New Issue

michael campbell · 2020-04-29T00:25:14+02:00

michael campbell commented

2020-04-29 00:25:14 +02:00

System Information
Operating system: Windows-10-10.0.17763-SP0 64 Bits
Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.92

Blender Version
Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-04-23 21:08, hash: 826f6dd9ee
Worked: (newest version of Blender that worked as expected)

Short description of error
cant rotate around partially occluded image objects.

Exact steps for others to reproduce the error

open file, make sure rotate around mouse is enabled in preferences. hover mouse over either side images and hold in the mouse wheel, move the mouse, the view will rotate around the mouse. Now do the same for the middle image, the view no longer rotates around the mouse.

rotate around mouse bug with image objects that are occluded.blend

**System Information** Operating system: Windows-10-10.0.17763-SP0 64 Bits Graphics card: GeForce GTX 1070/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.92 **Blender Version** Broken: version: 2.90 (sub 0), branch: master, commit date: 2020-04-23 21:08, hash: `826f6dd9ee` Worked: (newest version of Blender that worked as expected) **Short description of error** cant rotate around partially occluded image objects. **Exact steps for others to reproduce the error** open file, make sure rotate around mouse is enabled in preferences. hover mouse over either side images and hold in the mouse wheel, move the mouse, the view will rotate around the mouse. Now do the same for the middle image, the view no longer rotates around the mouse. [rotate around mouse bug with image objects that are occluded.blend](https://archive.blender.org/developer/F8500094/rotate_around_mouse_bug_with_image_objects_that_are_occluded.blend)

michael campbell commented

2020-04-29 00:25:14 +02:00

Added subscriber: @3di

Germano Cavalcante commented

2020-04-29 20:26:44 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2020-04-29 20:26:44 +02:00

This seems to be related to the image in the center with the "Transparency" option enabled. Can you confirm?
It also does not receive a projection of the 3d cursor.

This seems to be related to the image in the center with the "Transparency" option enabled. Can you confirm? It also does not receive a projection of the 3d cursor.

michael campbell commented

2020-04-29 20:30:42 +02:00

Correct, although if you move the cube behind so it’s not intersecting the image plane, then it works as normal without changing any of the image objects settings.

Richard Antalik commented

2020-04-29 21:27:52 +02:00

Changed status from 'Needs Triage' to: 'Confirmed'

Germano Cavalcante commented

2020-04-29 22:51:10 +02:00

A quick fix would be:

diff --git a/source/blender/draw/engines/overlay/overlay_image.c b/source/blender/draw/engines/overlay/overlay_image.c
index c592f11a855..252bcb4b1f1 100644
--- a/source/blender/draw/engines/overlay/overlay_image.c
+++ b/source/blender/draw/engines/overlay/overlay_image.c
@@ -366,7 +366,8 @@ void OVERLAY_image_empty_cache_populate(OVERLAY_Data *vedata, Object *ob)
 
   const bool show_frame = BKE_object_empty_image_frame_is_visible_in_view3d(ob, rv3d);
   const bool show_image = show_frame && BKE_object_empty_image_data_is_visible_in_view3d(ob, rv3d);
-  const bool use_alpha_blend = (ob->empty_image_flag & OB_EMPTY_IMAGE_USE_ALPHA_BLEND) != 0;
+  const bool use_alpha_blend = !DRW_state_is_depth() &&
+                               (ob->empty_image_flag & OB_EMPTY_IMAGE_USE_ALPHA_BLEND) != 0;
   const bool use_alpha_premult = ima && (ima->alpha_mode == IMA_ALPHA_PREMUL);
 
   if (!show_frame) {

A quick fix would be: ``` diff --git a/source/blender/draw/engines/overlay/overlay_image.c b/source/blender/draw/engines/overlay/overlay_image.c index c592f11a855..252bcb4b1f1 100644 --- a/source/blender/draw/engines/overlay/overlay_image.c +++ b/source/blender/draw/engines/overlay/overlay_image.c @@ -366,7 +366,8 @@ void OVERLAY_image_empty_cache_populate(OVERLAY_Data *vedata, Object *ob) const bool show_frame = BKE_object_empty_image_frame_is_visible_in_view3d(ob, rv3d); const bool show_image = show_frame && BKE_object_empty_image_data_is_visible_in_view3d(ob, rv3d); - const bool use_alpha_blend = (ob->empty_image_flag & OB_EMPTY_IMAGE_USE_ALPHA_BLEND) != 0; + const bool use_alpha_blend = !DRW_state_is_depth() && + (ob->empty_image_flag & OB_EMPTY_IMAGE_USE_ALPHA_BLEND) != 0; const bool use_alpha_premult = ima && (ima->alpha_mode == IMA_ALPHA_PREMUL); if (!show_frame) { ```

michael campbell commented

2020-04-29 23:23:47 +02:00

@mano-wii wow, they said you were fast, but that's ridiculous! Brilliant.

Clément Foucault commented

2020-06-30 01:40:56 +02:00

Added subscriber: @fclem

Clément Foucault commented

2020-06-30 01:40:56 +02:00

I would say this is by design. Transparent object should not be occluders. Not even for rotation. I can see some people using image plane as reference and this would get in the way really quickly.

Clément Foucault changed title from ~~rotate around mouse bug with image objects that are occluded~~ to Viewport: Auto-Depth rotation ignore transparent image reference empties

2020-06-30 01:42:34 +02:00

Philipp Oeser removed the

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Viewport: Auto-Depth rotation ignore transparent image reference empties #76203