There is an example called OpenCL Procedural Grass and Terrain
Example.
When trying this on my Westmere w/5870 it fails, while on a Mini
with 9400 it works fine.
The Mac Pro says:
GNU gdb 6.3.50-20050815 (Apple version gdb-1518) (Thu Jan 27
08:34:47 UTC 2011)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License,
and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "x86_64-apple-darwin".tty /dev/ttys000
[Switching to process 17873 thread 0x0]
----------------------------------------------------------------------------
Compute Engine: Using active OpenGL context...
----------------------------------------------------------------------------
Creating command queue for AMD ATI Radeon HD 5870...
----------------------------------------------------------------------------
Creating Buffer Object (6291456 bytes)...
Creating Buffer Object (6291456 bytes)...
Creating Buffer Object (262144 bytes)...
Creating Buffer Object (262144 bytes)...
Creating Buffer Object (262144 bytes)...
Grass Simulator: BladeCount[16384] RowCount[1000] ColumnCount[1000]
Compute Engine: Loading program 'gs' from file 'grass_kernels.cl'...
----------------------------------------------------------------------------
Building compute program 'gs'...
Error: Failed to build program executable!
OpenCL Error[-11]: Unknown error!
Build log for device '0':
Compute Engine: Empty Build Log! Unkown Error!
----------------------------------------------------------------------------
Grass Simulator: Failed to create device kernel!
Program ended with exit code: 1
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
++++++++++++++++++
However, when I run this on a Mac Mini, I get:
GNU gdb 6.3.50-20050815 (Apple version gdb-1518) (Thu Jan 27
08:34:47 UTC 2011)
Copyright 2004 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License,
and you are
welcome to change it and/or distribute copies of it under certain
conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB. Type "show warranty" for
details.
This GDB was configured as "x86_64-apple-darwin".tty /dev/ttys001
[Switching to process 45120 thread 0x0]
----------------------------------------------------------------------------
Compute Engine: Using active OpenGL context...
----------------------------------------------------------------------------
Creating command queue for NVIDIA GeForce 9400...
----------------------------------------------------------------------------
Creating Buffer Object (6291456 bytes)...
Creating Buffer Object (6291456 bytes)...
Creating Buffer Object (262144 bytes)...
Creating Buffer Object (262144 bytes)...
Creating Buffer Object (262144 bytes)...
Grass Simulator: BladeCount[16384] RowCount[1000] ColumnCount[1000]
Compute Engine: Loading program 'gs' from file 'grass_kernels.cl'...
----------------------------------------------------------------------------
Building compute program 'gs'...
----------------------------------------------------------------------------
Compute Engine: Creating kernel 'ComputeGrassOnTerrainKernel' for
program 'gs'...
Compute Engine: Creating OpenGL buffer reference 'grass_vertices'
for buffer id '1'...
Compute Engine: Creating OpenGL buffer reference 'grass_colors'
for buffer id '2'...
Terrain Simulator: Vertices[16384] Count[128, 128]
Compute Engine: Loading program 'tk' from file
'terrain_kernels.cl'...
----------------------------------------------------------------------------
Building compute program 'tk'...
----------------------------------------------------------------------------
Compute Engine: Creating kernel 'ComputeTerrainKernel' for program
'tk'...
Compute Engine: Creating OpenGL buffer reference
'terrain_vertices' for buffer id '3'...
Compute Engine: Creating OpenGL buffer reference 'terrain_normals'
for buffer id '4'...
Compute Engine: Creating OpenGL buffer reference
'terrain_texcoords' for buffer id '5'...
On Feb 6, 2011, at 9:32 AM, George Toledo wrote:
Apologies; make that 4870.
On Sun, Feb 6, 2011 at 12:26 PM, George Toledo
<gtole...@gmail.com> wrote:
Is this card known to perform badly with QC? I had some issues
with CL, GLSL and feedback loops (separately) that gave me
serious pause when using this gpu. I was really surprised. It's
not a stretch to say that my intel 3100/macbook 13" works better
than a mac pro loaded with the ati. I seem to remember that it's
not CL supported (I forgot to check w/ the cl info patch), but I
was surprised that it just performs badly, in general. Is this
consistent with the experience of others?
--
George Toledo
gtole...@gmail.com
www.georgetoledo.com
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--
George Toledo
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www.georgetoledo.com
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