Re: [osg-users] Texture2D format problem
Hello, I will make my own answer : I used osg::Image to obtain the unsigned char* data array, and i use it to melt the two pictures in one. data[n] = osg::maximum(Edata[n], (unsigned char)Cdata[i]); This is not a the solution of the problem, but it can solve it, when no other solution exist. (Be carefull to the depth of the Image) If someone have anther solution, I'll be interested. Thank you. 2008/2/21, Vincent Bourdier [EMAIL PROTECTED]: Hello I am trying to put 2 Texture2D on the same geometry. The backgroud texture is a .jpg file and the foregroud texture is a .png file with opacity (clouds map). If I use them normally, the foregroud texture is in good position, but in place of the transparent's pixels the is only a dark (black) color, and in place of the clouds pixels, I can see the background picture... if I convert .png file in .jpg(without transparency) it does nothing at all. and in .gif it does something strange, with a hight level of opacity (very transparent) and the white color of the clouds is not visible... Is there some picture formats recomendations ? How to manage 2 textures on the same geometry ? (melting them) Thanks ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Texture2D format problem
HI Vincent, Perhaps everybody else like me is a bit confused by what you are actually after. The OSG supports multi-texturing, and shaders, the plugins are all orthogonal to final readering - all in all is most likely what you are trying to do is very straightforward. I can't really glean exactly what the problem might be, perhaps you are just tackling it in an awkward way that is confusing things. Robert. On Mon, Feb 25, 2008 at 8:26 AM, Vincent Bourdier [EMAIL PROTECTED] wrote: Hello, I will make my own answer : I used osg::Image to obtain the unsigned char* data array, and i use it to melt the two pictures in one. data[n] = osg::maximum(Edata[n], (unsigned char)Cdata[i]); This is not a the solution of the problem, but it can solve it, when no other solution exist. (Be carefull to the depth of the Image) If someone have anther solution, I'll be interested. Thank you. 2008/2/21, Vincent Bourdier [EMAIL PROTECTED]: Hello I am trying to put 2 Texture2D on the same geometry. The backgroud texture is a .jpg file and the foregroud texture is a .png file with opacity (clouds map). If I use them normally, the foregroud texture is in good position, but in place of the transparent's pixels the is only a dark (black) color, and in place of the clouds pixels, I can see the background picture... if I convert .png file in .jpg(without transparency) it does nothing at all. and in .gif it does something strange, with a hight level of opacity (very transparent) and the white color of the clouds is not visible... Is there some picture formats recomendations ? How to manage 2 textures on the same geometry ? (melting them) Thanks ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Texture2D format problem
Hi Robert. Perhaps i'm not very clear in what i intend to do : I want to create a sphere to simulate the earth. for texturing it, i use 2 textures : one of the sea and lands, one of the clouds. the second one can be with opacity (to keep only clouds). I would just put the 2 textures on the earth, with the opacity of the clouds map, to obtain something a little bit realistic. I am new with OSG applications so I am still searching how to do basic things like that... Thanks. 2008/2/25, Robert Osfield [EMAIL PROTECTED]: HI Vincent, Perhaps everybody else like me is a bit confused by what you are actually after. The OSG supports multi-texturing, and shaders, the plugins are all orthogonal to final readering - all in all is most likely what you are trying to do is very straightforward. I can't really glean exactly what the problem might be, perhaps you are just tackling it in an awkward way that is confusing things. Robert. On Mon, Feb 25, 2008 at 8:26 AM, Vincent Bourdier [EMAIL PROTECTED] wrote: Hello, I will make my own answer : I used osg::Image to obtain the unsigned char* data array, and i use it to melt the two pictures in one. data[n] = osg::maximum(Edata[n], (unsigned char)Cdata[i]); This is not a the solution of the problem, but it can solve it, when no other solution exist. (Be carefull to the depth of the Image) If someone have anther solution, I'll be interested. Thank you. 2008/2/21, Vincent Bourdier [EMAIL PROTECTED]: Hello I am trying to put 2 Texture2D on the same geometry. The backgroud texture is a .jpg file and the foregroud texture is a .png file with opacity (clouds map). If I use them normally, the foregroud texture is in good position, but in place of the transparent's pixels the is only a dark (black) color, and in place of the clouds pixels, I can see the background picture... if I convert .png file in .jpg(without transparency) it does nothing at all. and in .gif it does something strange, with a hight level of opacity (very transparent) and the white color of the clouds is not visible... Is there some picture formats recomendations ? How to manage 2 textures on the same geometry ? (melting them) Thanks ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Texture2D format problem
HI Vincent, Have a look at the osgplanets example is has code paths that do multi-texturing on spheres. Robert. On Mon, Feb 25, 2008 at 9:01 AM, Vincent Bourdier [EMAIL PROTECTED] wrote: Hi Robert. Perhaps i'm not very clear in what i intend to do : I want to create a sphere to simulate the earth. for texturing it, i use 2 textures : one of the sea and lands, one of the clouds. the second one can be with opacity (to keep only clouds). I would just put the 2 textures on the earth, with the opacity of the clouds map, to obtain something a little bit realistic. I am new with OSG applications so I am still searching how to do basic things like that... Thanks. 2008/2/25, Robert Osfield [EMAIL PROTECTED]: HI Vincent, Perhaps everybody else like me is a bit confused by what you are actually after. The OSG supports multi-texturing, and shaders, the plugins are all orthogonal to final readering - all in all is most likely what you are trying to do is very straightforward. I can't really glean exactly what the problem might be, perhaps you are just tackling it in an awkward way that is confusing things. Robert. On Mon, Feb 25, 2008 at 8:26 AM, Vincent Bourdier [EMAIL PROTECTED] wrote: Hello, I will make my own answer : I used osg::Image to obtain the unsigned char* data array, and i use it to melt the two pictures in one. data[n] = osg::maximum(Edata[n], (unsigned char)Cdata[i]); This is not a the solution of the problem, but it can solve it, when no other solution exist. (Be carefull to the depth of the Image) If someone have anther solution, I'll be interested. Thank you. 2008/2/21, Vincent Bourdier [EMAIL PROTECTED]: Hello I am trying to put 2 Texture2D on the same geometry. The backgroud texture is a .jpg file and the foregroud texture is a .png file with opacity (clouds map). If I use them normally, the foregroud texture is in good position, but in place of the transparent's pixels the is only a dark (black) color, and in place of the clouds pixels, I can see the background picture... if I convert .png file in .jpg(without transparency) it does nothing at all. and in .gif it does something strange, with a hight level of opacity (very transparent) and the white color of the clouds is not visible... Is there some picture formats recomendations ? How to manage 2 textures on the same geometry ? (melting them) Thanks ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] Texture2D format problem
Thanks, I think i have understood that TexEnvCombine is necessary. I'll try this as soon as possible. Thank you for your explanations. 2008/2/25, Robert Osfield [EMAIL PROTECTED]: HI Vincent, Have a look at the osgplanets example is has code paths that do multi-texturing on spheres. Robert. On Mon, Feb 25, 2008 at 9:01 AM, Vincent Bourdier [EMAIL PROTECTED] wrote: Hi Robert. Perhaps i'm not very clear in what i intend to do : I want to create a sphere to simulate the earth. for texturing it, i use 2 textures : one of the sea and lands, one of the clouds. the second one can be with opacity (to keep only clouds). I would just put the 2 textures on the earth, with the opacity of the clouds map, to obtain something a little bit realistic. I am new with OSG applications so I am still searching how to do basic things like that... Thanks. 2008/2/25, Robert Osfield [EMAIL PROTECTED]: HI Vincent, Perhaps everybody else like me is a bit confused by what you are actually after. The OSG supports multi-texturing, and shaders, the plugins are all orthogonal to final readering - all in all is most likely what you are trying to do is very straightforward. I can't really glean exactly what the problem might be, perhaps you are just tackling it in an awkward way that is confusing things. Robert. On Mon, Feb 25, 2008 at 8:26 AM, Vincent Bourdier [EMAIL PROTECTED] wrote: Hello, I will make my own answer : I used osg::Image to obtain the unsigned char* data array, and i use it to melt the two pictures in one. data[n] = osg::maximum(Edata[n], (unsigned char)Cdata[i]); This is not a the solution of the problem, but it can solve it, when no other solution exist. (Be carefull to the depth of the Image) If someone have anther solution, I'll be interested. Thank you. 2008/2/21, Vincent Bourdier [EMAIL PROTECTED]: Hello I am trying to put 2 Texture2D on the same geometry. The backgroud texture is a .jpg file and the foregroud texture is a .png file with opacity (clouds map). If I use them normally, the foregroud texture is in good position, but in place of the transparent's pixels the is only a dark (black) color, and in place of the clouds pixels, I can see the background picture... if I convert .png file in .jpg(without transparency) it does nothing at all. and in .gif it does something strange, with a hight level of opacity (very transparent) and the white color of the clouds is not visible... Is there some picture formats recomendations ? How to manage 2 textures on the same geometry ? (melting them) Thanks ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
