Re: [osg-users] osg::Image with signed int
Hi J.P.,
Finally I can figure out a way so I don't need the signed int. Anyway, I think
my really problem is that by some reason, the texture is not uploading
correctly to the GPU :S
In my OGL code I have:
Code:
glGenTextures(1, (this-triTableTex));
glActiveTexture(GL_TEXTURE2);
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, this-triTableTex);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE);
glTexImage2D( GL_TEXTURE_2D, 0, GL_ALPHA16I_EXT, 16, 256, 0,
GL_ALPHA_INTEGER_EXT, GL_INT, triTable);
and in osg I do:
Code:
osg::Texture2D *tex = new osg::Texture2D();
tex-setFilter( osg::Texture2D::MIN_FILTER, osg::Texture2D::NEAREST );
tex-setFilter( osg::Texture2D::MAG_FILTER, osg::Texture2D::NEAREST );
tex-setWrap( osg::Texture2D::WRAP_S , osg::Texture2D::CLAMP_TO_EDGE );
tex-setWrap( osg::Texture2D::WRAP_T , osg::Texture2D::CLAMP_TO_EDGE );
tex-setWrap( osg::Texture2D::WRAP_R , osg::Texture2D::CLAMP_TO_EDGE );
//tex-setDataVariance( osg::Object::DYNAMIC );
unsigned char *cc = new unsigned char[256*16];
for ( int i = 0 ; i 256 ; i++)
for ( int ii = 0 ; ii 16 ; ii++)
{
//cc[ ii + i*16 ] = triTable[i][ii];
cc[ ii + i*16 ] = 127;
}
osg::Image *i = new osg::Image();
i-setImage( 16 , 256 , 0 , GL_ALPHA16I_EXT , GL_ALPHA_INTEGER_EXT ,
GL_INT , (unsigned char *)triTable , osg::Image::NO_DELETE );
tex-setImage( i );
brickState-setTextureAttributeAndModes(1,tex,osg::StateAttribute::ON);
I'm just setting all the values to 127 so I can check in the GPU if the texture
is uploaded to the geometry shader. I need this values to work in the GPU, as
I'm using it for an Marching Cubes Algorithm based.
Do you think I need to do something else? Thanks!
Cheers,
Pau[/code]
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Re: [osg-users] glMultiTexCoord4f , OSG with OGL code
Hi, Thanks Ulrich, but I think this set one parameter for each vertex, and I really need 32 values for each vertex (that's what I'm using multitexcoord) Finally I think I have this problem solved, I had some problems with the glew initialization. Now I'm having other problems uploading a texture to the GPU :P Thank you! Cheers, Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15981#15981 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] osg::Image with signed int
Hi, I'm sorry about that, but the texture upload it wasn't the problem. That's the problem working in the GPU, something is wrong but you don't have a way to determine what's wrong :P The problem was that in the GPU i had a vec3 array of 8 values, and I was setting it like Code: osg::Uniform* vtxDecal0U = new osg::Uniform(vertDecals[0], osg::Vec3f( 0.0f , 0.0f , 0.0f ) ); ... which goes ok in OGL, but seems to not work ok with osg, the value was not set. I work now with 8 diferents variables, but if anyone know how to solve it, it would be great :) Thank you! Cheers, Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15993#15993 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] glMultiTexCoord4f , OSG with OGL code
Hi, I saw this mistake before and I correct it but I'm still having the same error. With all the shaders :S Any idea? Thank you! Cheers, Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15927#15927 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] glMultiTexCoord4f , OSG with OGL code
Ok, I finally can solve it with this function: loadShaderSourceFromFile(...) No I'm not having errors of compiling shaders, and executing it. Returning to the topic of this post: If I comment the MultitexCoord line, nothing is showing in the viewer, but that's logic. The problem if is it uncommented ( I need theis function so I can pass my parameters to the shader in each vertex I have) the application crashes, and I got a Warning: Warning: detected OpenGL error 'invalid operation' after RenderBin::draw(,) Any Ideas? Thanksss!! Cheers, Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15928#15928 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] osg::Image with signed int
Hi, I've create an int matrix[16][256] and I need to pass it to the GPU. So what I've done is create a osg::Image, but when I have to pass the data to setImage, I have to do a cast to my data, because it needs an unsigned char *. My matrix contains signed ints so I cannot cast it to a unsigned char, as I loose information. How can I do it? Thanks! Cheers, Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15932#15932 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] glMultiTexCoord4f , OSG with OGL code
Hi, Since I know, OSG doesn't have support for geometry shaders, does it? I'll check it again. Thank you! Cheers, Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15857#15857 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] glMultiTexCoord4f , OSG with OGL code
Hi, Ok, I've decided to follow your idea and do it with the osg shaders but I'm getting the next error Code: FRAGMENT glCompileShader FAILED FRAGMENT Shader infolog: (0) : error C: syntax error, unexpected $end at token EOF (0) : error C0501: type name expected at token null atom VERTEX glCompileShader FAILED VERTEX Shader infolog: (0) : error C: syntax error, unexpected $end at token EOF (0) : error C0501: type name expected at token null atom GEOMETRY glCompileShader FAILED GEOMETRY Shader infolog: (0) : error C: syntax error, unexpected $end at token EOF (0) : error C0501: type name expected at token null atom glLinkProgram FAILED Program infolog: Vertex info --- (0) : error C: syntax error, unexpected $end at token EOF (0) : error C0501: type name expected at token null atom Geometry info - (0) : error C: syntax error, unexpected $end at token EOF (0) : error C0501: type name expected at token null atom Fragment info - (0) : error C: syntax error, unexpected $end at token EOF (0) : error C0501: type name expected at token null atom Here I have where I initialize the shader: Code: osg::StateSet* brickState = node-getOrCreateStateSet(); osg::Program* brickProgramObject= new osg::Program; osg::Shader* brickVertexObject = new osg::Shader( osg::Shader::VERTEX ); osg::Shader* brickFragmentObject= new osg::Shader( osg::Shader::FRAGMENT ); osg::Shader* brickGeometryObject= new osg::Shader( osg::Shader::GEOMETRY ); brickProgramObject-addShader( brickFragmentObject ); brickProgramObject-addShader( brickVertexObject ); brickProgramObject-addShader( brickGeometryObject ); brickVertexObject-readShaderFile ( osg::Shader::VERTEX , /home/Pau/OSG/Test1/Debug/Shaders/TestG80_VS.glsl ); brickFragmentObject-readShaderFile( osg::Shader::FRAGMENT , /home/Pau/OSG/Test1/Debug/Shaders/TestG80_GS2.glsl ); brickGeometryObject-readShaderFile( osg::Shader::GEOMETRY , /home/Pau/OSG/Test1/Debug/Shaders/TestG80_FS.glsl ); brickProgramObject-setParameter( GL_GEOMETRY_INPUT_TYPE_EXT , GL_POINTS ); brickProgramObject-setParameter( GL_GEOMETRY_OUTPUT_TYPE_EXT , GL_TRIANGLE_STRIP ); brickProgramObject-setParameter( GL_GEOMETRY_VERTICES_OUT_EXT , 16 ); glGenTextures(1, triTableTex ); glActiveTexture(GL_TEXTURE2); glEnable(GL_TEXTURE_2D); glBindTexture(GL_TEXTURE_2D, triTableTex); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_CLAMP_TO_EDGE); glTexImage2D( GL_TEXTURE_2D, 0, GL_ALPHA16I_EXT, 16, 256, 0, GL_ALPHA_INTEGER_EXT, GL_INT, triTable); float isolevel = 0.2; osg::Uniform* triTableU = new osg::Uniform(triTableTex, 0 ); osg::Uniform* isolevelU = new osg::Uniform(isolevel, isolevel ); osg::Uniform* vtxDecal0U = new osg::Uniform(vertDecals[0], osg::Vec3f( 0.0f, 0.0f , 0.0f ) ); osg::Uniform* vtxDecal1U = new osg::Uniform(vertDecals[1], osg::Vec3f( this-m_vStep.x , 0.0f , 0.0f ) ); osg::Uniform* vtxDecal2U = new osg::Uniform(vertDecals[2], osg::Vec3f( this-m_vStep.x , this-m_vStep.y , 0.0f ) ); osg::Uniform* vtxDecal3U = new osg::Uniform(vertDecals[3], osg::Vec3f( 0.0f, this-m_vStep.y , 0.0f ) ); osg::Uniform* vtxDecal4U = new osg::Uniform(vertDecals[4], osg::Vec3f( 0.0f, 0.0f , this-m_vStep.z ) ); osg::Uniform* vtxDecal5U = new osg::Uniform(vertDecals[5], osg::Vec3f( this-m_vStep.x , 0.0f , this-m_vStep.z ) ); osg::Uniform* vtxDecal6U = new osg::Uniform(vertDecals[6], osg::Vec3f( this-m_vStep.x , this-m_vStep.y , this-m_vStep.z ) ); osg::Uniform* vtxDecal7U = new osg::Uniform(vertDecals[7], osg::Vec3f( 0.0f, this-m_vStep.y , this-m_vStep.z ) ); brickState-addUniform( triTableU ); brickState-addUniform( isolevelU ); brickState-addUniform( vtxDecal0U ); brickState-addUniform( vtxDecal1U ); brickState-addUniform( vtxDecal2U ); brickState-addUniform( vtxDecal3U ); brickState-addUniform( vtxDecal4U ); brickState-addUniform( vtxDecal5U ); brickState-addUniform( vtxDecal6U ); brickState-addUniform( vtxDecal7U ); brickState-setAttributeAndModes(
[osg-users] glMultiTexCoord4f , OSG with OGL code
Hi, I'm trying to use multitexture in a class that inherit from Drawable. I use glMultiTexCoord4f inside of the drawImplementation, because I need this function to work with this parameters I have in a geomtryShader, but by some reason a get a Segmentation Fault while I'm using it... Shall I have to activate something? I've read something about activate the texture in the StateSet, but I don't know what exactly do... Thank you! Cheers, Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15793#15793 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] glMultiTexCoord4f , OSG with OGL code
Hi, I've realized that the problem is that I'm losing the graphics context. I'm having the same problem with the inicialization of a shader, and it crashes here before the glMultiTexCoord4f(), so I think if I solve the problem with the shader this maybe solves my first issue. My problem is that I have to work with a geometry shader, so I have to do all the initializations in OGL. I finally found a solution to initialize glew doing viewer.setRealizeOperation( ... ); but when I do viewer.realize, seems that I loose the Graphics Context again. I want to initialize my shader (glCreateProgramObjectARB) in a diferent place than where I do glewInit... how I can do that? Thank you! Cheers, Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15800#15800 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Transformations
Hi, It was the loading of the rotation Matrix, the Y-up Rotation just rotates 90 degrees on the wrong axis, but the animation was still working OK :) Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15319#15319 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Transformations
Hi, Thank you very much Ulrich!! It works! I don't know why the other things I've tried didn't work but now is working!!! Thank you! Cheers, Pau -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15195#15195 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Transformations
Hi Ümit, I try to use osg::Switch to insert all the data I have in the files( each file in a separate node with his own transform matrix ), so I can switch the nodes in each frame, but I don't know why it seems that the second and following data I insert accumulates the previous matrix transformation, and I don't want this. I write it seems because I cannot be sure about that, my models are doing some strange movements that are not correctly. I also have a sphere attached to the root node after I attach the switch node, and it seems to be also afected by the previous transformation... Althought, that's not my biggest problem, I can just fix it by adding and deleting one by one the nodes to the root node. My problem is that the transformation I apply in OGL is not the same as in OSG, and I need the same transformation. So the gridOrientation is a Matrix3x3 wich contains the rotation in the object. , that's why I'm adding some more values. My matrix rotation in OGL is like that: gridOrientation.set(0,0,rotation.get(0,0)); gridOrientation.set(0,1,rotation.get(1,0)); gridOrientation.set(0,2,rotation.get(2,0)); gridOrientation.set(0,3,0.0f); gridOrientation.set(1,0,rotation.get(0,1)); gridOrientation.set(1,1,rotation.get(1,1)); gridOrientation.set(1,2,rotation.get(2,1)); gridOrientation.set(1,3,0.0f); gridOrientation.set(2,0,rotation.get(0,2)); gridOrientation.set(2,1,rotation.get(1,2)); gridOrientation.set(2,2,rotation.get(2,2)); gridOrientation.set(2,3,0.0f); gridOrientation.set(3,0,0.0f); gridOrientation.set(3,1,0.0f); gridOrientation.set(3,2,0.0f); gridOrientation.set(3,3,1.0f); As I can understand about the precedence of OGL and OSG, if I do translate and then rotate in ogl, I have to do rotate * translate in OSG Otherwise, I've tried both combinations, and no one is working... :S Cheers, Pau. -- Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=15115#15115 ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
[osg-users] Transformations
Hi,
I'm trying to change my OGL code to OSG but I'm having really problems with
the transformations... I have 174 data files that each contains a cloud of
points, a vector3 with the translartion, and the matrix of rotation of each
cloud. So in OGL, i just do:
{
LoadFile( x++) //Loads a diferent file in each
iteration
glPushMatrix();
glTranslate( x , y , z )
glMultMatrixf( rotation );
glBegin( GL_POINTS )
glEnd();
glPopMatrix();
}
So in OSG first of all I try to do it with a osg::Switch but seems that
this node accumulate the transformations... is that right?? So what I
finally do is to attach a diferent node in each iteration and detach the
previous one. But the real problem is that OSG is not doing the same as OGL.
I do this for each node:
{
osg::Matrixf rotation;
osg::Matrixf translation;
osg::Matrixf result;
rotation.set( gridOrientation.get( 0 , 0 ) , gridOrientation.get( 0 , 1
) , gridOrientation.get( 0 , 2 ) , 0.0,
gridOrientation.get( 1 , 0 ) , gridOrientation.get( 1
, 1 ) , gridOrientation.get( 1 , 2 ) , 0.0,
gridOrientation.get( 2 , 0 ) , gridOrientation.get( 2
, 1 ) , gridOrientation.get( 2 , 2 ) , 0.0,
0.0f , 0.0f , 0.0f , 1.0f );
translation.setTrans( x , y , z );
result = rotation * translation;
osg::MatrixTransform *transformation = new osg::MatrixTransform();
transformation-addChild( gNode );
transformation-setMatrix( result );
}
rotationOGL.makeRotate( osg::DegreesToRadians(90.0) , osg::Vec3d( 0.0 , 1.0
, 0.0 ));
transformationOGL-setMatrix(rotationOGL);
transformationOGL-addChild(m_root);
m_vViewer.setSceneData( transformationOGL );
m_root-addChild( transformation );
.
What I'm doing wrong? I've tried a lot of combinations of creating rotation
, translation, result, but no one is the correct!! I think I'm doing
something wrong I cannot apreciate.
Thanks!!
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