https://bugs.freedesktop.org/show_bug.cgi?id=108977
Bug ID: 108977
Summary: Reading back an EGL Pbuffer using the OpenGL API
returns garbled output
Product: Mesa
Version: 18.2
Hardware: Other
OS: All
Status: NEW
Severity: normal
Priority: medium
Component: EGL
Assignee: mesa-dev@lists.freedesktop.org
Reporter: matthieu.bou...@gmail.com
QA Contact: mesa-dev@lists.freedesktop.org
Created attachment 142750
--> https://bugs.freedesktop.org/attachment.cgi?id=142750&action=edit
EGL pbuffer test
Hello,
I am currently facing an issue while reading back EGL Pbuffers using
glReadPixels() with the OpenGL API as the output is garbled. It properly works
with the OpenGL ES API though.
I can reproduce the issue on different machines running Arch Linux with mesa
18.2.5 on X using the following GPU: Intel HD 5500, Intel Iris 580 Pro, AMD RX
580.
I am not able to reproduce the issue on an NVDIA GTX 1070 running the
proprietary driver.
I have attached a sample code that reproduces the issue:
On OpenGL:
gcc `pkg-config --libs egl gl` -Wall egl-pbuffer.c -o egl-pbuffer
&&./egl-pbuffer
0xff69fc07 0xff69fc07 0xff69fc07 0xff69fc07
0xff69fc07 0xff11a1e4 0xff000000 0xff000000
0xff69fc07 0xff000000 0xff7fc700 0xff000000
0xff69fc07 0xff000000 0xff000000 0xff3a4e3b
On OpenGLES (adding the -es parameter to ./egl-pbuffer):
gcc `pkg-config --libs egl gl` -Wall egl-pbuffer.c -o egl-pbuffer
&&./egl-pbuffer -es
0xff0000ff 0xff0000ff 0xff0000ff 0xff0000ff
0xff0000ff 0xff0000ff 0xff0000ff 0xff0000ff
0xff0000ff 0xff0000ff 0xff0000ff 0xff0000ff
0xff0000ff 0xff0000ff 0xff0000ff 0xff0000ff
--
You are receiving this mail because:
You are the assignee for the bug.
You are the QA Contact for the bug._______________________________________________
mesa-dev mailing list
mesa-dev@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/mesa-dev
