Hi John, > >I have been working on removing the blurriness from the texture mapped >images in my application (the textured geometry is on the ground in the >scene). I finally determined that when I use mipmapping on the ground, the >mipmap level used is too small because of the aspect ratio of the triangles >being rendered. There are hooks in OpenGL and in Java3D 1.3 for handling >anisotropic texture maps, but when I check the capability of my system, the >maximum degree that I can pass to Texture.setAnisotropicFilterDegree(float >degree) is 1.0 (this is in Java3D 1.3). Unfortunately, I don't know what >that means. Can anyone point me to documentation about what "degree" is in >the Anisotropic Filter? Does max = 1.0 mean that it's not supported? The >only example I saw was asking for a degree of 4.0. >
Yes, this means that the graphics card that you are running on does not support anisotropic filtering. >Another option is to have the renderer use bigger images on the triangles - >lower mipmap levels or closer to the BASE_LEVEL. For instance, if I use the >BASE_LEVEL image, the rendering looks OK on the ground close to the camera, >but the texture map is unnacceptably aliased in the distance. If I could >offset the mipmap level used by the renderer, I should be able to have the >rendering quality improve overall in the image. > >Unfortunately, I don't understand the arguments to Texture.setLodOffset(s, >t, r). What are s, t, and r? How do you use them? If I want to use higher >resolution texture mipmap images in a scene, what values should I pass to >setLodOffset? > This is based upon the texture_lod_bias OpenGL extension. For a full description of its features and function, you can look it up on www.opengl.org. Hope this helps. Doug Twilleager Java 3D Team Sun Microsystems =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA3D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
