--- Begin Message ---
Package: libgl1-mesa-dri
Version: 7.5.1-1
Severity: normal
I've here a bigger program which worked in previous (cannot tell which)
version of this package, but currently it seems to crash when it calls
glReadPixels. I tried to create a similar testcase for the bug report and
noticed that it only(?) happened when I tried to read from frontbuffer. The
simple test is attached to this mail. It can be compiled with:
g++ -o readpixels_z readpixels_z.cpp `sdl-config --cflags` `sdl-config --libs` -lGL -lGLU
Backtrace:
#0 0x00000000 in ?? ()
#1 0xb7729dba in _swrast_ReadPixels (ctx=0x64, x=0, y=0, width=100, height=100, format=6407, type=5121, packing=0x809a40c, pixels=0xbfff7b98)
at swrast/s_readpix.c:605
#2 0xb7604c49 in intelReadPixels (ctx=0x808d530, x=0, y=0, width=100, height=100, format=6407, type=5121, pack=0x809a40c, pixels=0xbfff7b98)
at intel_pixel_read.c:305
#3 0xb7794ec6 in _mesa_ReadPixels (x=0, y=0, width=100, height=100, format=6407, type=5121, pixels=0xbfff7b98) at main/readpix.c:191
#4 0x08048e42 in Test_glReadPixels() ()
#5 0x0804908b in main ()
--- System information. ---
Architecture: i386
Kernel: Linux 2.6.31-rc5
Debian Release: squeeze/sid
500 unstable ftp.debian.org
500 unstable eeepc.debian.net
1 experimental ftp.debian.org
--- Package information. ---
Depends (Version) | Installed
===============================-+-==============
libc6 (>= 2.3.6-6~) | 2.9-26
libdrm-intel1 (>= 2.4.9) | 2.4.12-1
libdrm2 (>= 2.3.1) | 2.4.12-1
libexpat1 (>= 1.95.8) | 2.0.1-4
Package's Recommends field is empty.
Suggests (Version) | Installed
========================-+-===========
libglide3 |
#include <iostream>
#include <GL/gl.h>
#include <GL/glu.h>
#include "SDL.h"
using namespace std;
const unsigned int WIDTH = 100;
const unsigned int HEIGHT = 100;
const unsigned int BPP = 16;
SDL_Surface *surface;
bool Test_glReadPixels()
{
unsigned char pixels[WIDTH*HEIGHT*3];
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glBegin(GL_TRIANGLES);
glVertex3f(-0.0f, 1.0f, -6.0f);
glVertex3f(-1.0f, -1.0f, -6.0f);
glVertex3f(1.0f, -1.0f, -6.0f);
glEnd();
SDL_GL_SwapBuffers();
// Full Read -> all pixel at the same time
glReadBuffer( GL_FRONT );
glReadPixels(0, 0, WIDTH, HEIGHT, GL_RGB, GL_UNSIGNED_BYTE, static_cast<void*>(pixels));
return true;
}
int main()
{
int videoFlags;
const SDL_VideoInfo *videoInfo;
if (SDL_Init(SDL_INIT_VIDEO) < 0) {
cerr << "Video initialization failed: " << SDL_GetError() << endl;
SDL_Quit();
exit(1);
}
videoInfo = SDL_GetVideoInfo();
if (!videoInfo) {
cerr << "Video query failed: " << SDL_GetError() << endl;
SDL_Quit();
exit(1);
}
videoFlags = SDL_OPENGL | SDL_GL_DOUBLEBUFFER | SDL_HWPALETTE;
if (videoInfo->hw_available)
videoFlags |= SDL_HWSURFACE;
else
videoFlags |= SDL_SWSURFACE;
if (videoInfo->blit_hw)
videoFlags |= SDL_HWACCEL;
SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
surface = SDL_SetVideoMode(WIDTH, HEIGHT, BPP, videoFlags);
if (!surface) {
cerr << "Video mode set failed: " << SDL_GetError() << endl;
SDL_Quit();
exit(1);
}
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
glClearDepth(1.0f);
glEnable(GL_DEPTH_TEST);
glDepthFunc(GL_LEQUAL);
const GLfloat ratio = static_cast<GLfloat>(WIDTH) / static_cast<GLfloat>(HEIGHT);
glViewport(0, 0, WIDTH, HEIGHT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(45.0f, ratio, 0.25f, 100.0f);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
if (Test_glReadPixels() != true) {
SDL_Quit();
return 1;
}
SDL_Quit();
return 0;
}
--- End Message ---
--- Begin Message ---
Source: mesa
Source-Version: 7.6-1
We believe that the bug you reported is fixed in the latest version of
mesa, which is due to be installed in the Debian FTP archive:
libgl1-mesa-dev_7.6-1_i386.deb
to pool/main/m/mesa/libgl1-mesa-dev_7.6-1_i386.deb
libgl1-mesa-dri-dbg_7.6-1_i386.deb
to pool/main/m/mesa/libgl1-mesa-dri-dbg_7.6-1_i386.deb
libgl1-mesa-dri_7.6-1_i386.deb
to pool/main/m/mesa/libgl1-mesa-dri_7.6-1_i386.deb
libgl1-mesa-glx-dbg_7.6-1_i386.deb
to pool/main/m/mesa/libgl1-mesa-glx-dbg_7.6-1_i386.deb
libgl1-mesa-glx_7.6-1_i386.deb
to pool/main/m/mesa/libgl1-mesa-glx_7.6-1_i386.deb
libgl1-mesa-swx11-dbg_7.6-1_i386.deb
to pool/main/m/mesa/libgl1-mesa-swx11-dbg_7.6-1_i386.deb
libgl1-mesa-swx11-dev_7.6-1_i386.deb
to pool/main/m/mesa/libgl1-mesa-swx11-dev_7.6-1_i386.deb
libgl1-mesa-swx11-i686_7.6-1_i386.deb
to pool/main/m/mesa/libgl1-mesa-swx11-i686_7.6-1_i386.deb
libgl1-mesa-swx11_7.6-1_i386.deb
to pool/main/m/mesa/libgl1-mesa-swx11_7.6-1_i386.deb
libglu1-mesa-dev_7.6-1_i386.deb
to pool/main/m/mesa/libglu1-mesa-dev_7.6-1_i386.deb
libglu1-mesa_7.6-1_i386.deb
to pool/main/m/mesa/libglu1-mesa_7.6-1_i386.deb
libglw1-mesa-dev_7.6-1_i386.deb
to pool/main/m/mesa/libglw1-mesa-dev_7.6-1_i386.deb
libglw1-mesa_7.6-1_i386.deb
to pool/main/m/mesa/libglw1-mesa_7.6-1_i386.deb
libosmesa6-dev_7.6-1_i386.deb
to pool/main/m/mesa/libosmesa6-dev_7.6-1_i386.deb
libosmesa6_7.6-1_i386.deb
to pool/main/m/mesa/libosmesa6_7.6-1_i386.deb
mesa-common-dev_7.6-1_i386.deb
to pool/main/m/mesa/mesa-common-dev_7.6-1_i386.deb
mesa-utils_7.6-1_i386.deb
to pool/main/m/mesa/mesa-utils_7.6-1_i386.deb
mesa_7.6-1.diff.gz
to pool/main/m/mesa/mesa_7.6-1.diff.gz
mesa_7.6-1.dsc
to pool/main/m/mesa/mesa_7.6-1.dsc
mesa_7.6.orig.tar.gz
to pool/main/m/mesa/mesa_7.6.orig.tar.gz
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 545085@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Brice Goglin <bgoglin@debian.org> (supplier of updated mesa package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Format: 1.8
Date: Tue, 29 Sep 2009 11:51:58 +0200
Source: mesa
Binary: libgl1-mesa-swx11 libgl1-mesa-swx11-dbg libgl1-mesa-swx11-i686 libgl1-mesa-swx11-dev libgl1-mesa-glx libgl1-mesa-glx-dbg libgl1-mesa-dri libgl1-mesa-dri-dbg libgl1-mesa-dev mesa-common-dev libosmesa6 libosmesa6-dev libglu1-mesa libglu1-mesa-dev libglw1-mesa libglw1-mesa-dev mesa-utils
Architecture: source i386
Version: 7.6-1
Distribution: unstable
Urgency: low
Maintainer: Debian X Strike Force <debian-x@lists.debian.org>
Changed-By: Brice Goglin <bgoglin@debian.org>
Description:
libgl1-mesa-dev - A free implementation of the OpenGL API -- GLX development files
libgl1-mesa-dri - A free implementation of the OpenGL API -- DRI modules
libgl1-mesa-dri-dbg - Debugging symbols for the Mesa DRI modules
libgl1-mesa-glx - A free implementation of the OpenGL API -- GLX runtime
libgl1-mesa-glx-dbg - Debugging symbols for the Mesa GLX runtime
libgl1-mesa-swx11 - A free implementation of the OpenGL API -- runtime
libgl1-mesa-swx11-dbg - A free implementation of the OpenGL API -- debugging symbols
libgl1-mesa-swx11-dev - A free implementation of the OpenGL API -- development files
libgl1-mesa-swx11-i686 - Mesa OpenGL runtime [i686 optimized]
libglu1-mesa - The OpenGL utility library (GLU)
libglu1-mesa-dev - The OpenGL utility library -- development files
libglw1-mesa - A free implementation of the OpenGL API -- runtime
libglw1-mesa-dev - A free implementation of the OpenGL API -- development files
libosmesa6 - Mesa Off-screen rendering extension
libosmesa6-dev - Mesa Off-screen rendering extension -- development files
mesa-common-dev - Developer documentation for Mesa
mesa-utils - Miscellaneous Mesa GL utilities
Closes: 539162 545085
Changes:
mesa (7.6-1) unstable; urgency=low
.
[ Brice Goglin ]
* New upstream release.
+ Fix software fallback assertion on RS480, closes: #539162.
+ Fix segfault in _swrast_ReadPixels on i915, closes: #545085.
.
[ Julien Cristau ]
* Don't run install from the various configs in parallel, hopefully fixing a
bug in the previous debian/rules. Thanks to Bernhard R. Link for the
suggestions.
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--- End Message ---