From mboxrd@z Thu Jan 1 00:00:00 1970
From: bugzilla-daemon@freedesktop.org
Subject: [Bug 105256] Slow performance using glDrawElementsBaseVertex
Date: Mon, 26 Feb 2018 16:46:01 +0000
Message-ID:
Bug ID
105256
Summary
Slow performance using glDrawElementsBaseVertex
Product
Mesa
Version
17.3
Hardware
Other
OS
Linux (All)
Status
NEW
Severity
normal
Priority
medium
Component
Drivers/Gallium/r600
Assignee
dri-devel@lists.freedesktop.org
Reporter
logan@bacoosta.com
QA Contact
dri-devel@lists.freedesktop.org
Original application bug report here:
https://github.c=
om/gonetz/GLideN64/issues/1561
This bug happens using mupen64plus (N64 emulator) and the GLideN64 graphics
plugin.
The application uses VBO streaming
(ht=
tps://www.khronos.org/opengl/wiki/Buffer_Object_Streaming) using
ARB_buffer_storage to upload the VBO data.
Multiple users that when using Mesa + r600 driver, the performance was abys=
mal.
It turns out that converting the glDrawElementsBaseVertex calls to glDrawAr=
rays
fixed the problem.
You can see the commit that fixed the problem here:
https://github.com/loganmc10/GLideN64/commit/9bcfa67=
d9550c7f1cd4ba72f657facd66a4d27e4