Textures not rendered in a sample demo

I decided to try out Urho3d engine, so the first thing I did was downloading git repository, compiling it and then checking out provided samples. Then I saw that 19_VehicleDemo doesn’t have any textures and looks like that:

What am I doing wrong? I use Lubuntu.

~/Urho3D/build/bin $ ./19_VehicleDemo 
[Fri Oct 27 15:11:05 2017] INFO: Opened log file /home/mariusz/.local/share/urho3d/logs/VehicleDemo.log
[Fri Oct 27 15:11:05 2017] INFO: Created 1 worker thread
[Fri Oct 27 15:11:05 2017] INFO: Added resource path /home/mariusz/Pobrane/Urho3D/build/bin/Data/
[Fri Oct 27 15:11:05 2017] INFO: Added resource path /home/mariusz/Pobrane/Urho3D/build/bin/CoreData/
[Fri Oct 27 15:11:05 2017] INFO: Added resource path /home/mariusz/Pobrane/Urho3D/build/bin/Autoload/LargeData/
[Fri Oct 27 15:11:05 2017] INFO: Set screen mode 1024x768 windowed monitor 0
[Fri Oct 27 15:11:05 2017] INFO: Initialized input
[Fri Oct 27 15:11:05 2017] INFO: Initialized user interface
[Fri Oct 27 15:11:05 2017] INFO: Initialized renderer
[Fri Oct 27 15:11:05 2017] INFO: Initialized engine
Used resources:
Textures/Ramp.png
Textures/Spot.png
Textures/FishBoneLogo.png
Textures/UI.png
Textures/TerrainWeights.dds
Textures/TerrainDetail1.dds
Textures/TerrainDetail2.dds
Textures/TerrainDetail3.dds
Textures/Mushroom.dds
Textures/StoneDiffuse.dds
Textures/StoneNormal.dds
Techniques/NoTexture.xml
Techniques/TerrainBlend.xml
Techniques/Diff.xml
Techniques/DiffNormal.xml
RenderPaths/Forward.xml
UI/DefaultStyle.xml
Textures/UrhoIcon.png
Textures/HeightMap.png
Fonts/Anonymous Pro.ttf
Materials/Terrain.xml
Materials/Mushroom.xml
Materials/Stone.xml
Models/Mushroom.mdl
Models/Box.mdl
Models/Cylinder.mdl
Shaders/GLSL/Shadow.glsl
Shaders/GLSL/LitSolid.glsl
Shaders/GLSL/TerrainBlend.glsl
Shaders/GLSL/Basic.glsl

What about other demos?
Hardware? OS?

Some demos seems to be rendered correctly and some not. 23_Water looks very bad. In 18_CharacterDemo only character is rendered correctly:

GUI and particle effects seems to work.

OS is Lubuntu Linux, as previously mentioned. PC is quite old, Radeon HD 4850 graphic card.

$ sudo lshw -short
H/W path                   Device      Class       Description
==============================================================
                                       system      MS-7395 (To Be Filled By O.E.M.)
/0                                     bus         MS-7395
/0/0                                   memory      64KiB BIOS
/0/4                                   processor   Intel(R) Core(TM)2 Duo CPU     E7200  @ 2.53GHz
/0/4/5                                 memory      64KiB L1 cache
/0/4/6                                 memory      3MiB L2 cache
/0/f                                   memory      2GiB System Memory
/0/f/0                                 memory      DIMM [empty]
/0/f/1                                 memory      1GiB DIMM SDRAM Synchronous
/0/f/2                                 memory      1GiB DIMM SDRAM Synchronous
/0/f/3                                 memory      DIMM [empty]
/0/100                                 bridge      82G33/G31/P35/P31 Express DRAM Controller
/0/100/1                               bridge      82G33/G31/P35/P31 Express PCI Express Root Port
/0/100/1/0                             display     RV770 [Radeon HD 4850]
/0/100/1/0.1                           multimedia  RV770 HDMI Audio [Radeon HD 4850/4870]
/0/100/1a                              bus         82801I (ICH9 Family) USB UHCI Controller #4
/0/100/1a/1                usb3        bus         UHCI Host Controller
/0/100/1a/1/2                          input       G203 Prodigy Gaming Mouse
/0/100/1a.1                            bus         82801I (ICH9 Family) USB UHCI Controller #5
/0/100/1a.1/1              usb4        bus         UHCI Host Controller
/0/100/1a.7                            bus         82801I (ICH9 Family) USB2 EHCI Controller #2
/0/100/1a.7/1              usb1        bus         EHCI Host Controller
/0/100/1a.7/1/3            scsi8       storage     ADATA USB Flash Drive
/0/100/1a.7/1/3/0.0.0      /dev/sdb    disk        7775MB USB Flash Drive
/0/100/1a.7/1/3/0.0.0/0    /dev/sdb    disk        7775MB 
/0/100/1a.7/1/3/0.0.0/0/1  /dev/sdb1   volume      7414MiB Windows FAT volume
/0/100/1a.7/1/4            scsi9       storage     DataTraveler 3.0
/0/100/1a.7/1/4/0.0.0      /dev/sdc    disk        7803MB DataTraveler 3.0
/0/100/1a.7/1/4/0.0.0/0    /dev/sdc    disk        7803MB 
/0/100/1a.7/1/4/0.0.0/0/1  /dev/sdc1   volume      7437MiB Windows FAT volume
/0/100/1b                              multimedia  82801I (ICH9 Family) HD Audio Controller
/0/100/1c                              bridge      82801I (ICH9 Family) PCI Express Port 1
/0/100/1c/0                enp2s0      network     RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
/0/100/1c.4                            bridge      82801I (ICH9 Family) PCI Express Port 5
/0/100/1c.4/0                          storage     JMB363 SATA/IDE Controller
/0/100/1c.4/0.1                        storage     JMB363 SATA/IDE Controller
/0/100/1c.5                            bridge      82801I (ICH9 Family) PCI Express Port 6
/0/100/1c.5/0              eth0        network     RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
/0/100/1d                              bus         82801I (ICH9 Family) USB UHCI Controller #1
/0/100/1d/1                usb5        bus         UHCI Host Controller
/0/100/1d.1                            bus         82801I (ICH9 Family) USB UHCI Controller #2
/0/100/1d.1/1              usb6        bus         UHCI Host Controller
/0/100/1d.2                            bus         82801I (ICH9 Family) USB UHCI Controller #3
/0/100/1d.2/1              usb7        bus         UHCI Host Controller
/0/100/1d.3                            bus         82801I (ICH9 Family) USB UHCI Controller #6
/0/100/1d.3/1              usb8        bus         UHCI Host Controller
/0/100/1d.7                            bus         82801I (ICH9 Family) USB2 EHCI Controller #1
/0/100/1d.7/1              usb2        bus         EHCI Host Controller
/0/100/1e                              bridge      82801 PCI Bridge
/0/100/1e/0                            network     RTL8169 PCI Gigabit Ethernet Controller
/0/100/1f                              bridge      82801IB (ICH9) LPC Interface Controller
/0/100/1f.2                            storage     82801IB (ICH9) 2 port SATA Controller [IDE mode]
/0/100/1f.3                            bus         82801I (ICH9 Family) SMBus Controller
/0/100/1f.5                            storage     82801I (ICH9 Family) 2 port SATA Controller [IDE mode]
/0/1                       scsi2       storage     
/0/1/0.0.0                 /dev/cdrom  disk        DVD-RW  DVR-215D
/0/2                       scsi3       storage     
/0/2/0.0.0                 /dev/sda    disk        320GB ST3320613AS
/0/2/0.0.0/1               /dev/sda1   volume      294GiB EXT4 volume
/0/2/0.0.0/2               /dev/sda2   volume      4073MiB Extended partition
/0/2/0.0.0/2/5             /dev/sda5   volume      4073MiB Linux swap / Solaris partition

What does glxinfo tell you about your OpenGL version?

$ glxinfo | grep 'version'
server glx version string: 1.4
client glx version string: 1.4
GLX version: 1.4
    Max core profile version: 3.3
    Max compat profile version: 3.0
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0
OpenGL core profile version string: 3.3 (Core Profile) Mesa 17.0.7
OpenGL core profile shading language version string: 3.30
OpenGL version string: 3.0 Mesa 17.0.7
OpenGL shading language version string: 1.30
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 17.0.7
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00

If I force using OpenGL 2 with -gl2 flag as described here, textures are rendered correctly.

So it looks like handling OpenGL version 3 is the source of the problem.

I’m afraid that if these issues are caused by GL drivers, it’s unlikely to have them solved inside Urho.
However, I suggest you to check the program in any GL debugger. Urho may have some non-standard constructions that get broken.

Problem solved.

I used GL debugger, as advised above (this one) and I found out that engine, among other things, requires GL_EXT_texture_compression_s3tc extension, which I didn’t have. I installed using sudo apt-get install libtxc-dxtn-s2tc0 as described here and managed to run examples correctly.

Perhaps some sort of a warning when an OpenGL extension is not found could be implemented?

Thank you for help and suggestions!

I would usually not recommend to use Mesa driver, if your GPU vendor provides a better one.