Blender Ambient Occlusion Node Render Error #57963

New Issue

Rowan Cruse Howse · 2018-11-20T21:43:25+01:00

Rowan Cruse Howse commented

2018-11-20 21:43:25 +01:00

System Information
OS: Ubuntu 16.04
GPU: Nvidia GTX 1060 6GB
CPU: Intel I7-4790 3.60 GHz
RAM: 32GB DDR3

Blender Version
Broken: 2.79.6 b3ac3d13a2

Description
After connecting the new ambient occlusion node to geometry displacement, upon rendering with CUDA i get the error "CUDA error: illegal address in cuCtxSynchronize(), line 1817" when rendering with CPU it simply crashes. after rendering with GPU upon closing and reopening the file it crashes as soon as loaded.

Exact steps for others to reproduce the error
Load Blender
Go To Cycles
Add a Plane
Enter Material Nodes
Add a Displacement node
Ensure Displacement is set to geometry
Add ambient occlusion node
connect the nodes AO output to the Displacement nodes Height input
Connect Displacement node to the Displacement input of the Material Output node
Enter Rendered View with CPU or GPU
Error.blend

**System Information** OS: Ubuntu 16.04 GPU: Nvidia GTX 1060 6GB CPU: Intel I7-4790 3.60 GHz RAM: 32GB DDR3 **Blender Version** Broken: 2.79.6 b3ac3d13a2a **Description** After connecting the new ambient occlusion node to geometry displacement, upon rendering with CUDA i get the error "CUDA error: illegal address in cuCtxSynchronize(), line 1817" when rendering with CPU it simply crashes. after rendering with GPU upon closing and reopening the file it crashes as soon as loaded. **Exact steps for others to reproduce the error** Load Blender Go To Cycles Add a Plane Enter Material Nodes Add a Displacement node Ensure Displacement is set to geometry Add ambient occlusion node connect the nodes AO output to the Displacement nodes Height input Connect Displacement node to the Displacement input of the Material Output node Enter Rendered View with CPU or GPU [Error.blend](https://archive.blender.org/developer/F5656490/Error.blend)

Rowan Cruse Howse commented

2018-11-20 21:43:25 +01:00

Added subscriber: @Dragonpeak

Philipp Oeser commented

2018-11-21 09:58:54 +01:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2018-11-21 09:58:54 +01:00

Confirmed.
Does not happen in 2.8.

Running through a master Debug build next...

Confirmed. Does not happen in 2.8. Running through a master Debug build next...

Brecht Van Lommel was assigned by Philipp Oeser

2018-11-21 10:13:22 +01:00

Philipp Oeser commented

2018-11-21 10:13:22 +01:00

Added subscriber: @brecht

Philipp Oeser commented

2018-11-21 10:13:22 +01:00

Asserts

kernel_assert(index >= 0 && index < width);
where index is 198 and width is only 63

1   raise                                                                         0x7ffff1dd553f 
2   abort                                                                        0x7ffff1dbf895 
3   __assert_fail_base.cold.0                                    0x7ffff1dbf769 
4   __assert_fail                                                           0x7ffff1dcd9f6 
5   ccl::texture<unsigned int>::fetch                     kernel_compat_cpu.h 77   0x4a08b25      
6   ccl::sobol_dimension                                            kernel_random.h     47   0x4a08b25      
7   ccl::path_rng_1D                                                   kernel_random.h     78   0x4db403b      
8   ccl::path_rng_2D                                                   kernel_random.h     120  0x4db403b      
9   ccl::path_branched_rng_2D                                kernel_random.h     239  0x4db403b      
10  ccl::svm_ao                                                            svm_ao.h            46   0x4db403b      
11  ccl::svm_node_ao                                                 svm_ao.h            99   0x4db57f2      
12  ccl::svm_eval_nodes                                            svm.h               482  0x4dc2265      
13  ccl::shader_eval_displacement                          kernel_shader.h     1249 0x4de2904      
14  ccl::kernel_displace_evaluate                            kernel_bake.h       519  0x4eecd27      
15  ccl::kernel_cpu_avx2_shader                             kernel_cpu_impl.h   174  0x4eee121      
16  ccl::CPUDevice::thread_shader                        device_cpu.cpp      839  0x363d900

@brecht: mind having a look?

Asserts `kernel_assert(index >= 0 && index < width);` where index is 198 and width is only 63 ``` 1 raise 0x7ffff1dd553f 2 abort 0x7ffff1dbf895 3 __assert_fail_base.cold.0 0x7ffff1dbf769 4 __assert_fail 0x7ffff1dcd9f6 5 ccl::texture<unsigned int>::fetch kernel_compat_cpu.h 77 0x4a08b25 6 ccl::sobol_dimension kernel_random.h 47 0x4a08b25 7 ccl::path_rng_1D kernel_random.h 78 0x4db403b 8 ccl::path_rng_2D kernel_random.h 120 0x4db403b 9 ccl::path_branched_rng_2D kernel_random.h 239 0x4db403b 10 ccl::svm_ao svm_ao.h 46 0x4db403b 11 ccl::svm_node_ao svm_ao.h 99 0x4db57f2 12 ccl::svm_eval_nodes svm.h 482 0x4dc2265 13 ccl::shader_eval_displacement kernel_shader.h 1249 0x4de2904 14 ccl::kernel_displace_evaluate kernel_bake.h 519 0x4eecd27 15 ccl::kernel_cpu_avx2_shader kernel_cpu_impl.h 174 0x4eee121 16 ccl::CPUDevice::thread_shader device_cpu.cpp 839 0x363d900 ``` @brecht: mind having a look?

blender-admin commented

2018-12-06 19:50:05 +01:00

This issue was referenced by blender/cycles@a9e4dfc1d6

This issue was referenced by blender/cycles@a9e4dfc1d60c308507d439d209d10dd58adedc58

blender-admin commented

2018-12-06 19:50:05 +01:00

This issue was referenced by cccc40db51

This issue was referenced by cccc40db51a0b73d396952be65ef351a7c68ed4f

Brecht Van Lommel commented

2018-12-06 19:55:45 +01:00

Changed status from 'Open' to: 'Resolved'

Brecht Van Lommel closed this issue

2018-12-06 19:55:45 +01:00

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Blender Ambient Occlusion Node Render Error #57963