On Fri, Apr 21, 2006 at 07:34:32PM +0200, Bill Allombert wrote: > Once upgrading (only) freeglut3 to 2.4.0-5, I get > freeglut (conquestgl): ERROR: Internal error <Visual with necessary > capabilities not found> in function fgOpenWindow > X Error of failed request: BadWindow (invalid Window parameter) > Major opcode of failed request: 4 (X_DestroyWindow) > Resource id in failed request: 0x0 > Serial number of failed request: 29 > Current serial number in output stream: 33 > > Once upgrading (only) conquest-gl to 8.1.2-2 I get > > conquestgl: symbol lookup error: conquestgl: undefined symbol: dspInitData
After upgrading conquest-libs to 8.1.2-2 I get: freeglut (conquestgl): ERROR: Internal error <Visual with necessary capabilities not found> in function fgOpenWindow X Error of failed request: BadWindow (invalid Window parameter) Major opcode of failed request: 4 (X_DestroyWindow) Resource id in failed request: 0x0 Serial number of failed request: 23 Current serial number in output stream: 26 So it seems conquest-gl need a versionned dependency on conquest-libs (or conquest-libs shlibdeps should be bumped) to allow for partial upgrades. The code before this error: GL.c:962 glutInit(argc, argv); glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA | GLUT_ALPHA); glutInitWindowPosition(0,0); glutInitWindowSize(dConf.initWidth, dConf.initHeight); dConf.mainw = glutCreateWindow(CONQUESTGL_NAME); Removing GLUT_ALPHA from glutInitDisplayMode in this file allow to bypass the error message and get a window. (I am not sure whether conquestgl really work but it does not crash). According to the OPENGL GLUT spec: GLUT_ALPHA Bit mask to select a window with an alpha component to the color buffer(s). So Jamie, does the error means that my GL driver does not support alpha transparency, or is it a bug in freeglut ? You can try the testcase I attached. Cheers, -- Bill. <[EMAIL PROTECTED]> Imagine a large red swirl here.
#include <GL/glut.h> #include <GL/gl.h> #include <GL/glu.h> #include <GL/glx.h> #define CONQUESTGL_NAME "conquest" int uiGLInit(int *argc, char **argv) { glutInit(argc, argv); glutInitDisplayMode(GLUT_DEPTH | GLUT_DOUBLE | GLUT_RGBA | GLUT_ALPHA); glutInitWindowPosition(0,0); glutInitWindowSize(400, 300); glutCreateWindow(CONQUESTGL_NAME); return 0; } /* conquest - main program */ int main(int argc, char *argv[]) { uiGLInit(&argc, argv); return 0; }