Hello,
I am trying to run some Qt example applications using OpenGL (gles2) on the am335x StarterKit. These run fine with a resolution up to 1920x1080. But our application needs the LCD controller to be configured for 2048x2040. I have that resolution also working when not using OpenGL. Now, when I launch an OpenGL application with the 2048x2040 resolution, it fails with the following error:
root@am335x-evm:~# /usr/share/qt5/examples/opengl/2dpainting/2dpainting -platform eglfs
PVR: Hint: Setting ParamBufferSize to 33554432
PVR: Hint: Setting WindowSystem to libpvrDRMWSEGL_FRONT.so
PVR:(Error): OpenServices: Cannot open device driver /dev/omapdrm_pvr. [140, /pvr_bridge_u.c]
PVR:(Error): PVRSRVConnect: Unable to open connection. [361, /bridged_pvr_glue.c]
Could not initialize egl display
Cannot initialize PVR2D contex
Running the same command with strace gives the following output, which suggest a memory allocation problem when trying to open omapdrm_pvr
...
open("/usr/lib/libpvr2d.so.1", O_RDONLY|O_CLOEXEC) = 5
read(5, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\10\30\0\0004\0\0\0"..., 512) = 512
fstat64(5, {st_mode=S_IFREG|0644, st_size=147145, ...}) = 0
mmap2(NULL, 50288, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 5, 0) = 0xb408a000
mprotect(0xb408f000, 28672, PROT_NONE) = 0
mmap2(0xb4096000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 5, 0x4000) = 0xb4096000
close(5) = 0
open("/dev/omapdrm_pvr", O_RDWR) = -1 ENOMEM (Cannot allocate memory)
write(2, "PVR:(Error): OpenServices: Canno"..., 94PVR:(Error): OpenServices: Cannot open device driver /dev/omapdrm_pvr. [140, /pvr_bridge_u.c]
) = 94
write(2, "PVR:(Error): PVRSRVConnect: Unab"..., 82PVR:(Error): PVRSRVConnect: Unable to open connection. [361, /bridged_pvr_glue.c]
) = 82
...
Here is the output of the gfx_check.sh script:
WSEGL settings
[default]
ParamBufferSize=33554432
WindowSystem=libpvrDRMWSEGL_FRONT.so
DisableHWTQTextureUpload=1
------
ARM CPU information
processor : 0
model name : ARMv7 Processor rev 2 (v7l)
BogoMIPS : 274.24
Features : half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpd32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x3
CPU part : 0xc08
CPU revision : 2
Hardware : Generic AM33XX (Flattened Device Tree)
Revision : 0000
Serial : 0000000000000000
------
SGX driver information
Version SGX_DDK_Linux_CustomerTI sgxddk 19 1.9@2253347 (release) omap335x_linux
System Version String: None
------
Framebuffer settings
mode "2048x2040"
geometry 2048 2040 2048 2040 32
timings 0 0 0 0 0 0 0
accel true
rgba 8/16,8/8,8/0,0/0
endmode
Frame buffer device information:
Name :
Address : 0x8d100000
Size : 16711680
Type : PACKED PIXELS
Visual : TRUECOLOR
XPanStep : 1
YPanStep : 1
YWrapStep : 0
LineLength : 8192
Accelerator : No
------
Rotation settings
0
------
Kernel Module information
Module Size Used by
ipv6 306868 24
cryptodev 33612 0
arc4 1587 2
hid_generic 901 0
usbmouse 2640 0
wl12xx 58126 0
usbhid 28525 0
wlcore 180472 1 wl12xx
mac80211 358155 2 wl12xx,wlcore
cfg80211 218405 2 mac80211,wlcore
musb_dsps 7807 0
musb_hdrc 69089 1 musb_dsps
udc_core 11604 1 musb_hdrc
joydev 9168 0
usbcore 190325 3 musb_hdrc,usbhid,usbmouse
evdev 10085 0
snd_soc_evm 5106 0
pm33xx 4633 0
omapdrm_pvr 335287 0
wlcore_sdio 6142 0
omap_rng 4470 0
lis3lv02d_i2c 3245 0
rng_core 7660 2 omap_rng
lis3lv02d 15679 1 lis3lv02d_i2c
snd_soc_tlv320aic3x 41117 1
input_polldev 4559 1 lis3lv02d
musb_am335x 1240 0
rtc_omap 7578 1
omap_wdt 4347 0
ti_am335x_tsc 5415 0
ti_am335x_tscadc 5622 1 ti_am335x_tsc
gpio_keys 8092 0
leds_gpio 3445 0
------
Boot settings
console=ttyO0,115200n8 quiet consoleblank=0 omapfb.debug=y drm.debug=0x3f vram=32M omapfb.vram=0:32M root=/dev/nfs nfsroot=172.29.4.89:/export/rootfs,nolock rw ip=dhcp
------
Linux Kernel version
Linux am335x-evm 4.1.13-g8dc6617 #3 PREEMPT Wed Mar 2 18:32:18 CET 2016 armv7l GNU/Linux
So my question is: what needs to be done to be able to allocate enough memory to support opengl with a 2048x2040 resolution?
Regards,
Johann
