First of all, thank you very much for the effort applied on the radeonsi driver. It's getting a nice shape quite quickly.
I have noticed some problems with the rendering on some games, such as Killing Floor ("KF") and Crusader Kings II ("CK II").
The problem consists in that certain textures appear as black. This is not related to a dxtn problem, but rather it seems to be related to the way the (global?, in the case of CK II) illumination of the scene is applied. I have made this conclusion based on the fact that although on CK II all the terrain textures show a black colour (check the screenshots attached below, one of them with radeonsi, the other one with fglrx), on KF sometimes a texture is shown correct but a few steps ahead it is shown black. This usually happens when there is something blocking a source of illumination (check the two screenshots attached below, where one is taken like just one step ahead or behind of the other screenshot, both with radeonsi).
I believe the bugs on both games are the same or at least related and thus I am only opening a bug report.
My PC specs are as follows (taken from steam's system info):
Información sobre el procesador:
CPU Family: 0x15
CPU Model: 0x1
CPU Stepping: 0x2
CPU Type: 0x0
Velocidad: 3600 Mhz
Procesadores lógicos 8
Procesadores físicos 8
HyperThreading: No compatible
Información sobre la red:
Velocidad de la red:
Versión del sistema operativo:
Ubuntu 13.04 (64 bits)
Nombre de kernel: Linux
Versión de kernel: 3.11.0-031100-generic
Editor de X Server: The X.Org Foundation
Versión de X Server: 11303000
Gestor X Window: KWin
Versión del runtime de Steam: steam-runtime-release_2013-09-05
Tarjeta de vídeo:
Controlador: X.Org Gallium 0.4 on AMD PITCAIRN
Versión de controlador: 2.1 Mesa 9.3.0-devel (git-505fad0 raring-oibaf-ppa)
OpenGL Version: 2.1
Densidad de color del escritorio: 24 bits por píxel
Frecuencia de actualización del monitor: 60 Hz
Identificador del fabricante: 0x1002
Identificador del dispositivo: 0x6818
Número de monitores: 1
Número de tarjetas de vídeo lógicas: 1
Resolución de pantalla principal: 1920 x 1080
Resolución de escritorio: 1920 x 1080
Tamaño de pantalla principal: 18,78" x 10,55" (21,54" diag)
47,7cm x 26,8cm (54,7cm diag)
No se ha detectado la memoria VRAM principal
Tarjeta de sonido:
Dispositivo de sonido: Realtek ALC889
RAM: 15993 Mb
Idioma de la IU: Español
Micrófono: Not set
Espacio total en disco disponible: 469324 MB
Bloque libre más grande en el disco: 187784 MB
Informes de fallos recientes:
The GPU is a Radeon HD 7870. VRAM is 2 GB. Mesa's version is shown above (9.3 git 505fad0), plus llvm's version is 3.3-5ubuntu1~r~gd, installed from oibaf's ppa.
I am also attaching the shader dumps from CK II and KF (in the map in which the screenshots were taken and having passed where the bug shows).
Please, if any other information is needed, just let me know.
Created attachment 85409 [details]
CK II correctly rendered (fglrx)
Created attachment 85410 [details]
CK II incorrectly rendered (radeonsi)
Created attachment 85411 [details]
CK II shaders dump
Created attachment 85412 [details]
KF correct textures
Created attachment 85413 [details]
KF textures showing black
Created attachment 85414 [details]
KF shaders dump
Sorry, I forgot to add that on a Radeon HD 4570 (r600g driver) (a laptop), this/these bug/s do not show (i.e., the textures are rendered correctly). If needed, I can try to get a shader dump of CK II from that laptop.
For CK II, you need an LLVM 3.4 snapshot from Git/SVN. Not sure what the problem is with KF, let's see if the newer LLVM helps for that as well.
Thank you, Michel.
I have compiled 9.3~git1309181129.ec44d5 with llvm 3.4~svn190862. CK II now works much better as the map can be seen. However, the faces of the characters do not show correctly. I am attaching two screenshots and the shader dump in case it helps.
KF still shows the same problem, so it is probable that both problems were unrelated.
Created attachment 86100 [details]
CK II screenshot with LLVM 3.4 svn
Created attachment 86101 [details]
CK II screenshot with LLVM 3.4 svn
Created attachment 86102 [details]
CK II shader dump with LLVM 3.4 svn
Sorry, I should have specified the screenshots as images. Trying again...
Created attachment 86105 [details]
CK II screenshot #1 with LLVM 3.4 svn
Created attachment 86106 [details]
CK II screenshot #2 with LLVM 3.4 svn
(In reply to comment #9)
> KF still shows the same problem, so it is probable that both problems were
Yes, so the KF problem should be tracked separately.
For CK II, there are no shader compilation failures anymore. It could be useful if you could generate an apitrace, so we can isolate how it's trying to render the faces.
I haven't been able to apitrace the bug (I am using a x86_64 system and could not install the required packages neither do I think I would have had the expertise to do so :( ). However, I am happy to announce that as of mesa 10.0~git1310251530.980755 and llvm 3.4~svn193504 this problem (the CKII face textures) has been fixed.
Thank you, Michel for your help.