[Bug 69081] New: Incorrect rendering of textures

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=69081

          Priority: medium
            Bug ID: 69081
          Assignee: dri-devel at lists.freedesktop.org
           Summary: Incorrect rendering of textures
          Severity: normal
    Classification: Unclassified
                OS: Linux (All)
          Reporter: j.suarez.agapito at gmail.com
          Hardware: x86-64 (AMD64)
            Status: NEW
           Version: git
         Component: Drivers/Gallium/radeonsi
           Product: Mesa

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:
    Fabricante:  AuthenticAMD
    CPU Family:  0x15
    CPU Model:  0x1
    CPU Stepping:  0x2
    CPU Type:  0x0
    Velocidad: 3600 Mhz
    Procesadores lógicos 8
    Procesadores físicos 8
    HyperThreading:  No compatible
    FCMOV:  Compatible
    SSE2:  Compatible
    SSE3:  Compatible
    SSSE3:  Compatible
    SSE4a:  Compatible
    SSE41:  Compatible
    SSE42:  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

Memoria:
    RAM:  15993 Mb

Varios:
    Idioma de la IU:  Español
    LANG:  es_ES.UTF-8
    Micrófono:  Not set
    Espacio total en disco disponible: 469324 MB
    Bloque libre más grande en el disco: 187784 MB

Software Instalado:

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.

Regards,

José

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