Hi everyone.
I made a program which renders a 3D scene into a pbuffer/pixmap (if pbuffer aren't supported) in order to export it to a postscript file.
On a RHEL4 (32/64 bits) or whatever distribution may be, it works just fine.
I'm using Exceed when I'm working under WinXP and each time I run my program, more specifically when I export my 3D scene (visualization is OK) using pbuffers or GLX pixmaps, I have this kind of error message:
X Error of failed request: BadImplementation (server does not implement operation)
Major opcode of failed request: 134 (GLX)
Minor opcode of failed request: 5 (X_GLXMakeCurrent)
Serial number of failed request: 22
Current serial number in output stream: 22
Look this very good rendering on Slackware 14.2
in my opinion is near perfect.
https://i.stack.imgur.com/q5trL.png
Now look the same page on Fedora 30
https://i.stack.imgur.com/FBQv7.png
In my opinion the fonts on Fedora are too small and difficult to read, I prefer the fat fonts of... (20 Replies)
I encounter the following crash on RHEL 7.0 when I run a multithreaded video rendering application using GLFW and OpenGL. OpenGL version is 2.1 and MESA version is 9.3.0
Following is the back trace of the multi-threaded program I am working on:... (0 Replies)
Does anyone know why Fonts and most Graphics in KDE and Gnome are rendered rather badly. There are some text editors in KDE where the font is just horrible as far as legible.
Any links or knowledge on this topic would be grealy appreciated.
A Huge Unix/Linux Fan
Gregg (2 Replies)
GLXCREATEPBUFFER(3G) OpenGL Manual GLXCREATEPBUFFER(3G)NAME
glXCreatePbuffer - create an off-screen rendering area
C SPECIFICATION
GLXPbuffer glXCreatePbuffer(Display * dpy, GLXFBConfig config, const int * attrib_list);
PARAMETERS
dpy
Specifies the connection to the X server.
config
Specifies a GLXFBConfig structure with the desired attributes for the window.
attrib_list
Specifies a list of attribute value pairs, which must be terminated with None or NULL. Accepted attributes are GLX_PBUFFER_WIDTH,
GLX_PBUFFER_HEIGHT, GLX_PRESERVED_CONTENTS, and GLX_LARGEST_PBUFFER.
DESCRIPTION
glXCreatePbuffer creates an off-screen rendering area and returns its XID. Any GLX rendering context that was created with respect to
config can be used to render into this window. Use glXMakeContextCurrent() to associate the rendering area with a GLX rendering context.
The accepted attributes for a GLXPbuffer are:
GLX_PBUFFER_WIDTH
Specify the pixel width of the requested GLXPbuffer. The default value is 0.
GLX_PBUFFER_HEIGHT
Specify the pixel height of the requested GLXPbuffer. The default value is 0.
GLX_LARGEST_PBUFFER
Specify to obtain the largest available pixel buffer, if the requested allocation would have failed. The width and height of the
allocated pixel buffer will never exceed the specified GLX_PBUFFER_WIDTH or GLX_PBUFFER_HEIGHT, respectively. Use glXQueryDrawable() to
retrieve the dimensions of the allocated pixel buffer. The default value is False.
GLX_PRESERVED_CONTENTS
Specify if the contents of the pixel buffer should be preserved when a resource conflict occurs. If set to False, the contents of the
pixel buffer may be lost at any time. If set to True, or not specified in attrib_list, then the contents of the pixel buffer will be
preserved (most likely by copying the contents into main system memory from the frame buffer). In either case, the client can register
(using glXSelectEvent(), to receive pixel buffer clobber events that are generated when the pbuffer contents have been preserved or
damaged.
GLXPbuffers contain the color and ancillary buffers specified by config. It is possible to create a pixel buffer with back buffers and to
swap those buffers using glXSwapBuffers().
NOTES
glXCreatePbuffer is available only if the GLX version is 1.3 or greater.
If the GLX version is 1.1 or 1.0, the GL version must be 1.0. If the GLX version is 1.2, then the GL version must be 1.1. If the GLX
version is 1.3, then the GL version must be 1.2.
GLXPbuffers are allocated from frame buffer resources; applications should consider deallocating them when they are not in use.
ERRORS
BadAlloc is generated if there are insufficient resources to allocate the requested GLXPbuffer.
GLXBadFBConfig is generated if config is not a valid GLXFBConfig.
BadMatch is generated if config does not support rendering to pixel buffers (e.g., GLX_DRAWABLE_TYPE does not contain GLX_PBUFFER_BIT).
SEE ALSO
glXChooseFBConfig(), glXCreatePbuffer, glXMakeContextCurrent(), glXSelectEvent()
COPYRIGHT
Copyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see
http://oss.sgi.com/projects/FreeB/.
AUTHORS
opengl.org
opengl.org 06/10/2014 GLXCREATEPBUFFER(3G)