Radeon 6850 = blankscreen

[silentrage]

Greetings everyone:
When I try to render the caterpillar test scene with GPU acceleration, using my radeon 6850 1gb, the entire monitor flashes a few times, then I get indigo window completely filled with black where the render should be, but the progress bar still runs just like it's rendering properly.

I have the latest openCL drivers.

Any help here would be greatly appreciated.

My system specs:
Indigo 3 win 64 build
phenom x4 9950
sapphire hd 6850 1gb
8gb ram
win 7 ult 64

Cheers!

[Zom-B]

Does GPU Rendering work for you on other scenes probably?
The caterpillar scene was somehow fishy from the beginning, I wonder why Glare didn't managed to "fix" it until now...

[silentrage]

I did try another test scene, it behaved the same way.

[Zom-B]

Ok, then I need to know:

Do you use latest Indigo build, version 3.2.2 ??
Are you realy using the latest Drivers, its 11.11 released 16.11.2011?

What does the Log tell you when your render starts about the GPU?
There is some new "--gpu_info" commandline argument that should help identify the issue,
but I don't know how to use it probably

[silentrage]

Wow, I updated to the latest version and it worked perfectly!

Now I'm getting 427k samples/s on GPU, up from 10k/s on CPU alone, incredible!

Now to play with my own scenes.

[Zom-B]

Happy to hear that!
Rule of the thumb for everybody who has Issues with GPU rendering:
"First update your drivers to the latest version!"

[silentrage]

In my case, I had the latest drivers, so let's make that:

update drivers + update indigo = success

[Zom-B]

yes, using latest Indigo version is quite crucial, especially for beat builds

For everybody else with GPU issues, try to add your GPU Info to your problem reports (availible since Indigo 3.2.2).
Simply create a cmd file in the Indigo dir with the following content:

Code: Select all

indigo_console.exe --gpu_info
PAUSE

Paste the result and we' can see all your related Hardware, driver and software information.
Here a example of my System:

Code: Select all

OpenCL info:
------------

Successfully loaded OpenCL functions from OpenCL.dll
Num platforms: 1

platform_id: 000007FEE44C29C8
platform_profile: FULL_PROFILE
platform_version: OpenCL 1.1 AMD-APP-SDK-v2.5 (793.1)
platform_name: AMD Accelerated Parallel Processing
platform_vendor: Advanced Micro Devices, Inc.
platform_extensions: cl_khr_icd cl_amd_event_callback cl_am
khr_d3d10_sharing
2 device(s) found.
----------- Device 0 -----------
device_type: CL_DEVICE_TYPE_GPU
device_name: ATI RV770
driver_version: CAL 1.4.1607
device_profile: FULL_PROFILE
device_version: OpenCL 1.0 AMD-APP-SDK-v2.5 (793.1)
device_max_compute_units: 10
device_max_work_group_size: 256
device_max_work_item_dimensions: 3
device_image2d_max_width: 0
Dim 0 device_max_num_work_items: 256
Dim 1 device_max_num_work_items: 256
Dim 2 device_max_num_work_items: 256
device_max_clock_frequency: 770 MHz
device_global_mem_size: 536870912 B
----------- Device 1 -----------
device_type: CL_DEVICE_TYPE_CPU
device_name: AMD Phenom(tm) II X6 1090T Processor
driver_version: 2.0
device_profile: FULL_PROFILE
device_version: OpenCL 1.1 AMD-APP-SDK-v2.5 (793.1)
device_max_compute_units: 6
device_max_work_group_size: 1024
device_max_work_item_dimensions: 3
device_image2d_max_width: 8192
Dim 0 device_max_num_work_items: 1024
Dim 1 device_max_num_work_items: 1024
Dim 2 device_max_num_work_items: 1024
device_max_clock_frequency: 3214 MHz
device_global_mem_size: 8584962048 B
OpenCL: using device 'AMD Phenom(tm) II X6 1090T Processor'