[Bug 102204] GLideN64 very slow on r600/radeonsi - GL_ARB_buffer_storage bug

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102204

H4nN1baL <reizemberk at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         QA Contact|reizemberk at gmail.com        |dri-devel at lists.freedesktop
                   |                            |.org
         Resolution|---                         |WONTFIX
            Summary|GLideN64 very slow on       |GLideN64 very slow on
                   |r600/radeonsi               |r600/radeonsi -
                   |                            |GL_ARB_buffer_storage bug
             Status|NEW                         |RESOLVED
           Keywords|love                        |

--- Comment #4 from H4nN1baL <reizemberk at gmail.com> ---
 This problem is currently "solved" on the GLide64 side. But it reveals a
serious problem with GL_ARB_buffer_storage extension.
 GL_UNSIGNED_BYTE with GL_ARB_buffer_storage extension it's extremely slow.
GL_UNSIGNED_SHORT with GL_ARB_buffer_storage extension is a little better but
is still slow. GL_UNSIGNED_BYTE without GL_ARB_buffer_storage is faster, but
not work at full speed. GL_UNSIGNED_SHORT without GL_ARB_buffer_storage works
perfect.

 The dangerous combination is GL_UNSIGNED_SHORT with GL_ARB_buffer_storage
extension, that may end up destroying the hardware under the right conditions.

 I quote myself:

Sorry for the delay, but I had a "technical mishap" ...my video card is DEAD,
stone-dead.
I am responsible for my unwise BIOS configuration (GART error reporting =
Enabled + PCIE Spread Spectrum = Auto) and "pushing stress" on GPU to render at
non-standard resolutions (monitor 1080p to 120Hz (max 144Hz), mupen64plus
windowed to 1400x1050) using a buggy extension like some kind of "steeplechase
generator" for benchmarking. Well, I reaped what I sowed.

 Original post there:
https://github.com/gonetz/GLideN64/pull/1738#issuecomment-369848827

Full history:
https://github.com/gonetz/GLideN64/issues/1561
https://bugs.freedesktop.org/show_bug.cgi?id=105256
https://github.com/gonetz/GLideN64/pull/1735
https://github.com/gonetz/GLideN64/pull/1738

cya

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