Cycles baking crashes #40601

New Issue

Robin Karlsson · 2014-06-13T12:00:47+02:00

Robin Karlsson commented

2014-06-13 12:00:47 +02:00

System Information
Windows 7 64 bit
AMD Radeon HD 6950

Blender Version
Broken: Blender 2.71 RC (169c95b), Blender 2.70 (e53c00a)

Short description of error
When I try to bake details from a highpoly mesh to lowpoly model Blender crashes. I attempted to bake this model with two different Blender versions from Graphicall (as the latest release doesn't have Cycles baking yet) but both versions crashed upon bake. I did also try to bake some details to a cube which worked fine so there seems to be something weird with this specific scene.

I have tried using the simplify option to make the models a bit lighter, using square textures and using low-res textures neither of which seemed to help.

Exact steps for others to reproduce the error
The only step necessary should be to just press bake under the render settings. The highpoly models are located in the first top layer, the lowpoly model in the first bottom layer and the cage model in the second bottom layer.

Cycles_Baking_Crash.blend

**System Information** Windows 7 64 bit AMD Radeon HD 6950 **Blender Version** Broken: Blender 2.71 RC (169c95b), Blender 2.70 (e53c00a) **Short description of error** When I try to bake details from a highpoly mesh to lowpoly model Blender crashes. I attempted to bake this model with two different Blender versions from Graphicall (as the latest release doesn't have Cycles baking yet) but both versions crashed upon bake. I did also try to bake some details to a cube which worked fine so there seems to be something weird with this specific scene. I have tried using the simplify option to make the models a bit lighter, using square textures and using low-res textures neither of which seemed to help. **Exact steps for others to reproduce the error** The only step necessary should be to just press bake under the render settings. The highpoly models are located in the first top layer, the lowpoly model in the first bottom layer and the cage model in the second bottom layer. [Cycles_Baking_Crash.blend](https://archive.blender.org/developer/F94132/Cycles_Baking_Crash.blend)

Robin Karlsson commented

2014-06-13 12:00:47 +02:00

Changed status to: 'Open'

Robin Karlsson commented

2014-06-13 12:00:47 +02:00

Added subscriber: @RobinKarlsson

Dalai Felinto was assigned by Sergey Sharybin

2014-06-13 15:12:55 +02:00

Sergey Sharybin commented

2014-06-13 15:12:55 +02:00

Added subscribers: @dfelinto, @Sergey

Sergey Sharybin commented

2014-06-13 15:12:55 +02:00

@dfelinto, it's possible that bvhtree_from_mesh_faces will return treeData.tree == NULL for meshes without any faces.This leads to a null-pointer dereference in the ray intersection code.

Guess we just need to skip rays is tree is NULL?

@dfelinto, it's possible that `bvhtree_from_mesh_faces` will return treeData.tree == NULL for meshes without any faces.This leads to a null-pointer dereference in the ray intersection code. Guess we just need to skip rays is tree is NULL?

Sergey Sharybin commented

2014-06-13 15:15:03 +02:00

One more note,

if (&treeData[i].tree == NULL) {

is rather strange check -- why to get an address here? And it's invalid because NULL tree will also happen with mesh without faces a was mentioned above.

One more note, ``` if (&treeData[i].tree == NULL) { ``` is rather strange check -- why to get an address here? And it's invalid because NULL tree will also happen with mesh without faces a was mentioned above.

Dalai Felinto commented

2014-06-13 19:25:50 +02:00

Fixed, the issue was indeed objects with zero faces:

By the way, you will get considerable faster baking if you join some of your highpoly objects. Baking in the external engine (Cycles) runs once per highpoly object.

Thanks for the report, closing commit coming shortly.

Fixed, the issue was indeed objects with zero faces: ![lots_objs_bake_small.jpg](https://archive.blender.org/developer/F94156/lots_objs_bake_small.jpg) By the way, you will get considerable faster baking if you join some of your highpoly objects. Baking in the external engine (Cycles) runs once per highpoly object. Thanks for the report, closing commit coming shortly.

blender-admin commented

2014-06-13 19:37:59 +02:00

This issue was referenced by b0708dd718

This issue was referenced by b0708dd7189dfef21f7f9af5e98b0a7e1369e507

Dalai Felinto commented

2014-06-13 19:38:40 +02:00

Changed status from 'Open' to: 'Resolved'

Dalai Felinto closed this issue

2014-06-13 19:38:40 +02:00

Dalai Felinto commented

2014-06-13 19:38:40 +02:00

Closed by commit b0708dd718.

Closed by commit b0708dd718.

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Cycles baking crashes #40601