Re: [osg-users] How to load different tga files in a smoothly way like a movie
digitcodecpp schrieb: to change textures at 30 fps. But, when new image is load, there is a delay that prevent application to run smoothly like a movie. I tryed it also with .jpg files, but i get the same delay when i load a new texture. I tryed also to use osg::TextureRectangle instead osg::Texture2D, but in this case i don't see the texture. Could anyone give me any suggest about? Check the console if your images get scaled to POT when uploaded to the graphics card. If that's the case, this is the main-cause of your slowdown. Try using TextureRectangles (you'll need absolute tex-coords for that) Try subloading your images: create a placeholder image, attach this placeholder image as texture to your geometry, and copy subsequent tga-frames into this placeholder image and dirty the placeholder image. subloading should be much faster than replacing textures. You can get it even more faster (but difficulter to code): use a second thread which holds a shared context, use a pool of textures which are bound to both contexts and a corresponding pool of images, only one texture is visibly bound to your geometry, so now you can fill in the second thread the other textures with images and swap the textures via an update-callback to show new uploaded frames. I hope you'll get the idea. Or convert your images into a .mov and play it via the quicktime-plugin ;-) hth, Stephan ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to load different tga files in a smoothly way like a movie
Hi Umpa Lumpa (just a likely a name as digitcodecpp so I presume this is fine ;-) The best guide is the existing Quicktime and Xine-lib plugins, they both run a background thread for the movies stream and subclass from osg::ImageStream. ImageStream by default constructs a PixelBufferObject which helps immensly with stream data to textures. osg::Texture* itself supports texture subloading, but I'm not sure if 1.2 requires you to reuse the same osg::Image/ImageStream rather than applying a separate osg::Image on each update. It just so happens for my future work on Present3D due later this Spring and through the summer I plan to write a movie class that enables streaming of movies form standard image formats, this is something I would integrate into the core OSG. The motivation is the ability to use non standard video dimensions and full RGBA or intensity data streams. It also opens the possibility of stream 3D textures as well. Robert. On Wed, Apr 2, 2008 at 8:03 AM, digitcodecpp [EMAIL PROTECTED] wrote: Hi guys, my goal is to create an application that load different .tga files in a sequence like a movie. To do that, i have created a geometry that will contain all the textures (images). First of all, i load all images file, using : mImageTexture = new osg::Texture2D; typedef osg::Image* _IMAGES; std::vector_IMAGES mImgFaceArray; osg::StateSet* mStateOne; ... a loop to load different .tga file (myfile_000k.tga . where k is between 0...1000 with 720x576 resolution) in mImgFaceArray. Then, i use StateSet : mStateOne-setTextureAttributeAndModes(0,mImageTexture,osg::StateAttribute::ON); mStateOne-setMode(GL_LIGHTING, osg::StateAttribute::OFF); Once i have load all images, in a method that i call continuosly i'm using: mImageTexture.get()-setDataVariance(osg::Object::DYNAMIC); mImageTexture.get()-setResizeNonPowerOfTwoHint(false); mImageTexture.get()-setImage(mImgFaceArray.at(imageIndexArray)); to change textures at 30 fps. But, when new image is load, there is a delay that prevent application to run smoothly like a movie. I tryed it also with .jpg files, but i get the same delay when i load a new texture. I tryed also to use osg::TextureRectangle instead osg::Texture2D, but in this case i don't see the texture. Could anyone give me any suggest about? I'm using openscenegraph 1.2. Thank in advance. ___ 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] How to load different tga files in a smoothly way like a movie
-- Initial Header --- From : [EMAIL PROTECTED] To : OpenSceneGraph Users osg-users@lists.openscenegraph.org Cc : Date : Wed, 2 Apr 2008 09:31:37 +0100 Subject : Re: [osg-users] How to load different tga files in a smoothly way like a movie Hi bobby lobby (just a likely a name ...I presume this is fine ;-) like Umpa Lumpa) As you know, what you are planning to do next summer is what we are going to realize in our building. :) Where i will find Quicktime and Xine-lib plugins? thanks Hi Umpa Lumpa (just a likely a name as digitcodecpp so I presume this is fine ;-) The best guide is the existing Quicktime and Xine-lib plugins, they both run a background thread for the movies stream and subclass from osg::ImageStream. ImageStream by default constructs a PixelBufferObject which helps immensly with stream data to textures. osg::Texture* itself supports texture subloading, but I'm not sure if 1.2 requires you to reuse the same osg::Image/ImageStream rather than applying a separate osg::Image on each update. It just so happens for my future work on Present3D due later this Spring and through the summer I plan to write a movie class that enables streaming of movies form standard image formats, this is something I would integrate into the core OSG. The motivation is the ability to use non standard video dimensions and full RGBA or intensity data streams. It also opens the possibility of stream 3D textures as well. Robert. On Wed, Apr 2, 2008 at 8:03 AM, digitcodecpp [EMAIL PROTECTED] wrote: Hi guys, my goal is to create an application that load different .tga files in a sequence like a movie. To do that, i have created a geometry that will contain all the textures (images). First of all, i load all images file, using : mImageTexture = new osg::Texture2D; typedef osg::Image* _IMAGES; std::vector_IMAGES mImgFaceArray; osg::StateSet* mStateOne; ... a loop to load different .tga file (myfile_000k.tga . where k is between 0...1000 with 720x576 resolution) in mImgFaceArray. Then, i use StateSet : mStateOne-setTextureAttributeAndModes(0,mImageTexture,osg::StateAttribute::ON); mStateOne-setMode(GL_LIGHTING, osg::StateAttribute::OFF); Once i have load all images, in a method that i call continuosly i'm using: mImageTexture.get()-setDataVariance(osg::Object::DYNAMIC); mImageTexture.get()-setResizeNonPowerOfTwoHint(false); mImageTexture.get()-setImage(mImgFaceArray.at(imageIndexArray)); to change textures at 30 fps. But, when new image is load, there is a delay that prevent application to run smoothly like a movie. I tryed it also with .jpg files, but i get the same delay when i load a new texture. I tryed also to use osg::TextureRectangle instead osg::Texture2D, but in this case i don't see the texture. Could anyone give me any suggest about? I'm using openscenegraph 1.2. Thank in advance. ___ 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] How to load different tga files in a smoothly way like a movie
Hi, you could also try enable pixel buffer objects on the textures you are pushing to the GPU. See the call that looks like e.g. VideoImage[i]-setImage(cameraImageWidth, cameraImageHeight, 1, 1, GL_LUMINANCE, GL_UNSIGNED_BYTE, gImage[i], osg::Image::NO_DELETE); _VideoImage[i]-setPixelBufferObject(new osg::PixelBufferObject(_VideoImage[i].get())); cheers jp digitcodecpp wrote: Hi guys, my goal is to create an application that load different .tga files in a sequence like a movie. To do that, i have created a geometry that will contain all the textures (images). First of all, i load all images file, using : mImageTexture = new osg::Texture2D; typedef osg::Image* _IMAGES; std::vector_IMAGES mImgFaceArray; osg::StateSet* mStateOne; ... a loop to load different .tga file (myfile_000k.tga . where k is between 0...1000 with 720x576 resolution) in mImgFaceArray. Then, i use StateSet : mStateOne-setTextureAttributeAndModes(0,mImageTexture,osg::StateAttribute::ON); mStateOne-setMode(GL_LIGHTING, osg::StateAttribute::OFF); Once i have load all images, in a method that i call continuosly i'm using: mImageTexture.get()-setDataVariance(osg::Object::DYNAMIC); mImageTexture.get()-setResizeNonPowerOfTwoHint(false); mImageTexture.get()-setImage(mImgFaceArray.at(imageIndexArray)); to change textures at 30 fps. But, when new image is load, there is a delay that prevent application to run smoothly like a movie. I tryed it also with .jpg files, but i get the same delay when i load a new texture. I tryed also to use osg::TextureRectangle instead osg::Texture2D, but in this case i don't see the texture. Could anyone give me any suggest about? I'm using openscenegraph 1.2. Thank in advance. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org -- This message is subject to the CSIR's copyright terms and conditions, e-mail legal notice, and implemented Open Document Format (ODF) standard. The full disclaimer details can be found at http://www.csir.co.za/disclaimer.html. This message has been scanned for viruses and dangerous content by MailScanner, and is believed to be clean. MailScanner thanks Transtec Computers for their support. ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to load different tga files in a smoothly way like a movie
Hi Umpa, it's ok to call you Umpa isn't it? :-) On Wed, Apr 2, 2008 at 10:19 AM, digitcodecpp [EMAIL PROTECTED] wrote: Hi bobby lobby (just a likely a name ...I presume this is fine ;-) like Umpa Lumpa) As you know, what you are planning to do next summer is what we are going to realize in our building. :) Where i will find Quicktime and Xine-lib plugins? There plugins are in src/osgPlugins/quicktime and src/osgPlugins/xine respectively. There should both be in OSG-1.2, but in 1.2 the quicktime plugin only works under OSX. The xine plugin only works under unix but in theory could be ported to Windows as there have been xine ports. The xine plugin is far simpler than the Quicktime plugin so if you want a code reference then it'll be the one to look at. Bobby Lobotomy ___ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
Re: [osg-users] How to load different tga files in a smoothly way like a movie
-- Initial Header --- From : [EMAIL PROTECTED] To : OpenSceneGraph Users osg-users@lists.openscenegraph.org Cc : Date : Wed, 2 Apr 2008 10:50:02 +0100 Subject : Re: [osg-users] How to load different tga files in a smoothly way like a movie Its pretty ok for UMBA ;) I will try with xine plugin and also with other suggets about my issue. I will post result as soon as possible. Thank. Hi Umpa, it's ok to call you Umpa isn't it? :-) On Wed, Apr 2, 2008 at 10:19 AM, digitcodecpp [EMAIL PROTECTED] wrote: Hi bobby lobby (just a likely a name ...I presume this is fine ;-) like Umpa Lumpa) As you know, what you are planning to do next summer is what we are going to realize in our building. :) Where i will find Quicktime and Xine-lib plugins? There plugins are in src/osgPlugins/quicktime and src/osgPlugins/xine respectively. There should both be in OSG-1.2, but in 1.2 the quicktime plugin only works under OSX. The xine plugin only works under unix but in theory could be ported to Windows as there have been xine ports. The xine plugin is far simpler than the Quicktime plugin so if you want a code reference then it'll be the one to look at. Bobby Lobotomy ___ 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
