hiya andreas,
i already have the noise creation stuff...
My question was about the
img->set(Image::OSG_RGB_PF, texw, texh, texd, 1, 1, 0.0, (const UInt8 *)
data, Image::OSG_FLOAT32_IMAGEDATA);
thing. Last time i checked OSG didn't support float textures. The new
version does? I am using the one with GLSL support...
Yes it is supported just use Image::OSG_FLOAT32_IMAGEDATA as image data
type.
Il gio, 2004-07-22 alle 16:03, Andreas Zieringer ha scritto:
Hi Enrico,
I'm doing something like this in my code.
Andreas
// create texture 3d chunk.
TextureChunkPtr texc = TextureChunk::create();
ImagePtr img = Image::create();
// these are not included in OpenSG ...
FilteredNoise noise(noisew, noiseh, noised);
float *data = noise.createVectorNoiseTexture3D(texw, texh, texd, scale,
amp, mode);
beginEditCP(img);
img->set(Image::OSG_RGB_PF, texw, texh, texd, 1, 1, 0.0, (const
UInt8 *) data, Image::OSG_FLOAT32_IMAGEDATA);
endEditCP(img);
delete [] data;
beginEditCP(texc);
texc->setImage(img);
texc->setMinFilter(GL_LINEAR);
texc->setMagFilter(GL_LINEAR);
endEditCP(texc);
In the fragment shader:
vec3 v = texture3D(noiseMap, coords).rgb;
thanks and thanks to the other answers.
creating a 3D image is doind something like:
image->set(Image::OSG_RGB_PF,256,256, 256, 1, 1, 0, data)?
unfortunately i realized just in now that i am in need of *floating
point* textures, containing noise patterns. Is still impossible use
such textures in OpenSG? any idea how may i send to my shader the noise
texture?
Il gio, 2004-07-22 alle 13:24, Matthias Stiller ha scritto:
Hi Enrico,
this is supported, just construct a 3D image and use it as texture.
Regards
Matthias
On Thursday 22 July 2004 11:03, Enrico Borrione wrote:
hi all opensg users,
i was wondering if 3D textures where supported in OpenSG. I want to use
them to build a 3D noise map to simulate metal flakes, following an
NVIDIA example.
Thanks enrico
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Andreas Zieringer [EMAIL PROTECTED]
Fraunhofer IGD - A4 phone +49 (0)6151 155 289
Fraunhoferstr. 5 fax +49 (0)6151 155 196
D-64283 Darmstadt www.igd.fhg.de/www/igd-a4
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