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From: sguox002 on 18 Jun 2010 09:58
Hello,
I am trying to plot some figures really fast using pcolor (which is an actually 2D surface). I tried to use the opengl hardware acceleration but got nothing improvement.

using opengl software:
K>> opengl software
K>> opengl info

Version = 1.1.0
Vendor = Microsoft Corporation
Renderer = GDI Generic
MaxTextureSize = 1024
Visual = 09 (RGB 32 bits(08 08 08 00) zdepth 32, Generic, Opengl, Double Buffered, Window)
Software = true
# of Extensions = 3

Driver Bug Workarounds:
OpenGLBitmapZbufferBug = 1
OpenGLWobbleTesselatorBug = 0
OpenGLLineSmoothingBug = 0
OpenGLDockingBug = 0
OpenGLClippedImageBug = 0
OpenGLEraseModeBug = 0

K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
Elapsed time is 0.292876 seconds.
K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
Elapsed time is 0.255865 seconds.
K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
Elapsed time is 0.265222 seconds.

try opengl hardware acceleration:
K>> opengl hardware
K>> opengl info

Version = 1.4.0 - Build 7.14.10.4957
Vendor = Intel
Renderer = Intel Bear Lake B
MaxTextureSize = 2048
Visual = 04 (RGB 32 bits(08 08 08 08) zdepth 16, Hardware Accelerated, Opengl, Double Buffered, Window)
Software = false
# of Extensions = 50

Driver Bug Workarounds:
OpenGLBitmapZbufferBug = 0
OpenGLWobbleTesselatorBug = 0
OpenGLLineSmoothingBug = 0
OpenGLDockingBug = 0
OpenGLClippedImageBug = 0
OpenGLEraseModeBug = 0

K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
Elapsed time is 0.295664 seconds.
K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
Elapsed time is 0.272162 seconds.
K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
Elapsed time is 0.267038 seconds.

I did not see any improvement and I tried it on some other computers, nothing new is found.

Anyone can give me some hints? Thanks
From: us on 18 Jun 2010 14:10
sguox002 <shangpingguo(a)gmail.com> wrote in message <1906172110.369147.1276883961535.JavaMail.root(a)gallium.mathforum.org>...
> Hello,
> I am trying to plot some figures really fast using pcolor (which is an actually 2D surface). I tried to use the opengl hardware acceleration but got nothing improvement.
>
> using opengl software:
> K>> opengl software
> K>> opengl info
>
> Version = 1.1.0
> Vendor = Microsoft Corporation
> Renderer = GDI Generic
> MaxTextureSize = 1024
> Visual = 09 (RGB 32 bits(08 08 08 00) zdepth 32, Generic, Opengl, Double Buffered, Window)
> Software = true
> # of Extensions = 3
>
> Driver Bug Workarounds:
> OpenGLBitmapZbufferBug = 1
> OpenGLWobbleTesselatorBug = 0
> OpenGLLineSmoothingBug = 0
> OpenGLDockingBug = 0
> OpenGLClippedImageBug = 0
> OpenGLEraseModeBug = 0
>
> K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
> Elapsed time is 0.292876 seconds.
> K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
> Elapsed time is 0.255865 seconds.
> K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
> Elapsed time is 0.265222 seconds.
>
> try opengl hardware acceleration:
> K>> opengl hardware
> K>> opengl info
>
> Version = 1.4.0 - Build 7.14.10.4957
> Vendor = Intel
> Renderer = Intel Bear Lake B
> MaxTextureSize = 2048
> Visual = 04 (RGB 32 bits(08 08 08 08) zdepth 16, Hardware Accelerated, Opengl, Double Buffered, Window)
> Software = false
> # of Extensions = 50
>
> Driver Bug Workarounds:
> OpenGLBitmapZbufferBug = 0
> OpenGLWobbleTesselatorBug = 0
> OpenGLLineSmoothingBug = 0
> OpenGLDockingBug = 0
> OpenGLClippedImageBug = 0
> OpenGLEraseModeBug = 0
>
> K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
> Elapsed time is 0.295664 seconds.
> K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
> Elapsed time is 0.272162 seconds.
> K>> tic,pcolor(x_pos,y_pos,data),shading interp,axis ij,axis equal,colorbar,drawnow,toc
> Elapsed time is 0.267038 seconds.
>
> I did not see any improvement and I tried it on some other computers, nothing new is found.
>
> Anyone can give me some hints? Thanks

a hint:
- play with the many wvisual options...
- to see the possible settings/definitions, use

set(gcf,'wvisual')

us
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