377 2009-08-26 05:56:48 +0200 float overflow 2010-03-24 07:51:50 +0100 0 0 3 JogAmp Jogl core 1 All all VERIFIED INVALID P3 normal --- 1 sgothel sgothel DEFECT --- oldest_to_newest 393 0 sgothel 2010-03-24 07:51:50 +0100 ---- Reported by orace 2009-08-26 05:56:48 ---- If I do : GL gl = getGL(); printmatrix(); System.out.println("scale -> " + Scale); gl.glScaled(Scale.getX(), Scale.getY(), Scale.getZ()); printmatrix(); System.out.println("trans -> " + Translation); gl.glTranslated(Translation.getX(), Translation.getY(), Translation.getZ()); printmatrix(); With big values for scale ans Translation (up to 10e38,ie max_float) I get a lot of NaN in the matrix. Does JoGL use float instead of double for the Modelview/Projection matrix ? PS : (output of the code below) GL_MODELVIEW : _________________________________ |0.75 |0.0 |0.0 |0.0 | |0.0 |0.75 |0.0 |0.0 | |0.0 |0.0 |1.0 |0.0 | |0.125 |0.125 |0.0 |1.0 | --------------------------------- scale -> 0.25, 2.5000000000000003E-46, 0.5 GL_MODELVIEW _________________________________ |0.1875 |0.0 |0.0 |0.0 | |0.0 |0.0* |0.0 |0.0 | |0.0 |0.0 |0.5 |0.0 | |0.125 |0.125 |0.0 |1.0 | --------------------------------- 0.0* here we have 0.0 instead of 1.875E-46 trans -> -1.0, -1.0E45, -1.0 GL_MODELVIEW _________________________________ |0.1875 |0.0 |0.0 |0.0 | |0.0 |0.0 |0.0 |0.0 | |0.0 |0.0 |0.5 |0.0 | |NaN |NaN |NaN |NaN | --------------------------------- here we have to mush NaN ---- Additional Comments From orace 2009-09-01 05:16:46 ---- Created an attachment Test program show that 'native' OpenGL also have overflow 'bugs' ---- Additional Comments From orace 2009-09-01 05:17:04 ---- This is not a JoGL bug, indeed OpenGL **use** single precision Floating-Point Computation. See Opengl 3.1 spec : http://www.opengl.org/registry/doc/glspec31.20090528.pdf §2.1.1 page 7 A C/C++ programs with OpenGL reproduce the same bug. ---- Additional Comments From mbien@fh-landshut.de 2010-03-20 13:01:03 ---- set to INVALID since its expected behavior. --- Bug imported by sgothel@jausoft.com 2010-03-24 07:51 EDT --- This bug was previously known as _bug_ 377 at https://jogl.dev.java.net/bugs/show_bug.cgi?id=377 Imported an attachment (id=141) The original submitter of attachment 141 is unknown. Reassigning to the person who moved it here: sgothel@jausoft.com. 141 2009-09-01 05:16:00 +0200 2009-09-01 05:16:00 +0200 Test program show that 'native' OpenGL also have overflow 'bugs' test.cpp text/plain 4631 sgothel LyoqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioq LwovKiAgICAgICAgICAgICAgICAgICAgIGN1YmUuYyAgICAgICAgICAgICAgICAgICAgICAgICAg ICovCi8qKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioq KioqKi8KLyogQWZmaWNoZSBhIGwnZWNyYW4gdW4gY3ViZSBlbiAzRCAgICAgICAgICAgICAgICAg ICAgICAqLwovKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioqKioq KioqKioqKiovCgovKiBpbmNsdXNpb24gZGVzIGZpY2hpZXJzIGQnZW4tdGV0ZSBHbHV0ICovCgoj aW5jbHVkZSA8R0wvZ2x1dC5oPgojaW5jbHVkZSA8aW9zdHJlYW0+CgovKiBOb3RyZSBzdHJ1Y3R1 cmUgcG9pbnQgKi8KCnR5cGVkZWYgc3RydWN0CnsKICBmbG9hdCB4OwogIGZsb2F0IHk7CiAgZmxv YXQgejsKICBmbG9hdCByOwogIGZsb2F0IGc7CiAgZmxvYXQgYjsKfSBwb2ludDsKCnBvaW50IHBb OF09ewogICAgey0wLjUsLTAuNSwgMC41LDEuMCwwLjAsMC4wfSwKICAgIHstMC41LCAwLjUsIDAu 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