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| David Uebler... |
 Posted: Mon Sep 07, 2009 8:10 pm |
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Guest
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Hi there,
I have to render YUV Pixel data with OpenGL.
As far as I know, there is no direct support for this (or at least only
on macs)
What would be the best way to transform it into RGB-data?
Possibly using Hardware acceleration?
Or is there some other way than rgb -> texture -> quad?
Thanks for any advice!
Greetings, Dave |
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| fungus... |
| Posted: Mon Sep 07, 2009 8:10 pm |
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Guest
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On Sep 7, 6:24 pm, "Charles E Hardwidge" <bo... at (no spam) invalid.invalid>
wrote:
Quote: "David Uebler" <dave5... at (no spam) gulli.com> wrote in message
news:y82dnepPOpLmrTjXnZ2dnUVZ8sxi4p2d at (no spam) giganews.com...
Hi there,
I have to render YUV Pixel data with OpenGL.
As far as I know, there is no direct support for this (or at least only
on macs)
What would be the best way to transform it into RGB-data?
Possibly using Hardware acceleration?
Why can't you transform it on the main CPU before uploading
to the graphics card? Pentiums are "hardware" too.
Quote: Or is there some other way than rgb -> texture -> quad?
EXT_color_matrix:http://www.opengl.org/registry/specs/SGI/color_matrix.txt
Almost no graphics cards support that extension....
Quote: GLSL shader:http://www.fourcc.org/source/YUV420P-OpenGL-GLSLang.c
If you insist on doing it with the graphics card then I
think that's the only option.
--
<\___/>
/ O O \
\_____/ FTB.
http://www.topaz3d.com/ |
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| Charles E Hardwidge... |
| Posted: Mon Sep 07, 2009 8:24 pm |
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Guest
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"David Uebler" <dave5689 at (no spam) gulli.com> wrote in message
news:y82dnepPOpLmrTjXnZ2dnUVZ8sxi4p2d at (no spam) giganews.com...
Quote: Hi there,
I have to render YUV Pixel data with OpenGL.
As far as I know, there is no direct support for this (or at least only
on macs)
What would be the best way to transform it into RGB-data?
Possibly using Hardware acceleration?
Or is there some other way than rgb -> texture -> quad?
EXT_color_matrix:
http://www.opengl.org/registry/specs/SGI/color_matrix.txt
GLSL shader:
http://www.fourcc.org/source/YUV420P-OpenGL-GLSLang.c
--
Charles E Hardwidge |
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| David Uebler... |
| Posted: Tue Sep 08, 2009 3:27 am |
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Guest
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On Mon, 07 Sep 2009 09:42:05 -0700, fungus wrote:
Quote: On Sep 7, 6:24Â pm, "Charles E Hardwidge" <bo... at (no spam) invalid.invalid> wrote:
"David Uebler" <dave5... at (no spam) gulli.com> wrote in message
news:y82dnepPOpLmrTjXnZ2dnUVZ8sxi4p2d at (no spam) giganews.com...
Hi there,
I have to render YUV Pixel data with OpenGL. As far as I know, there
is no direct support for this (or at least only on macs)
What would be the best way to transform it into RGB-data? Possibly
using Hardware acceleration?
Why can't you transform it on the main CPU before uploading to the
graphics card? Pentiums are "hardware" too.
Or is there some other way than rgb -> texture -> quad?
EXT_color_matrix:http://www.opengl.org/registry/specs/SGI/
color_matrix.txt
Almost no graphics cards support that extension....
GLSL shader:http://www.fourcc.org/source/YUV420P-OpenGL-GLSLang.c
If you insist on doing it with the graphics card then I think that's the
only option.
Thanks for your answers!
I'll see if I get it to work, and whine some more if it won't  |
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| pro-grammer... |
| Posted: Thu Sep 10, 2009 6:03 am |
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Guest
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David,
I had to do the same thing. The GLSL shader is the way to go.
Akhil |
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