https://bugs.freedesktop.org/show_bug.cgi?id=69285
Priority: medium
Bug ID: 69285
Assignee: mesa-dev@lists.freedesktop.org
Summary: LLVM rendering bug
Severity: normal
Classification: Unclassified
OS: Linux (All)
Reporter: genpfa...@gmail.com
Hardware: x86 (IA32)
Status: NEW
Version: 9.2
Component: Mesa core
Product: Mesa
Created attachment 85735
--> https://bugs.freedesktop.org/attachment.cgi?id=85735&action=edit
SDL 1.2-based test case
A simple OpenGL ES 2.0 checkerboard shader has significantly different output
when LLVM is enabled on softpipe.
I think the non-LLVM output is correct.
$ gcc --version
gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3
$ uname -a
Linux garmin-vm 3.2.0-53-generic #81-Ubuntu SMP Thu Aug 22 21:03:54 UTC 2013
i686 i686 i386 GNU/Linux
$ lsb_release -a
Distributor ID: Ubuntu
Description: Ubuntu 12.04.3 LTS
Release: 12.04
Codename: precise
# llvm 3.3
./configure --disable-assertions
# mesa 9.2.0 llvm enabled
./configure \
--enable-gles2 \
--enable-gallium-egl \
--with-egl-platforms="x11" \
--with-gallium-drivers="swrast" \
--with-dri-drivers="" \
--disable-xvmc \
--enable-gallium-llvm \
# mesa 9.2.0 llvm disabled
./configure \
--enable-gles2 \
--enable-gallium-egl \
--with-egl-platforms="x11" \
--with-gallium-drivers="swrast" \
--with-dri-drivers="" \
--disable-xvmc \
--disable-gallium-llvm \
# build
g++ main.cpp -lSDL -L/usr/local/lib -lEGL -lGLESv2
# run
LD_LIBRARY_PATH=/usr/local/lib EGL_SOFTWARE=true ./a.out
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