Hi,
I just begin OpenGL dev on a Raspberry Pi platform
I have first installed GL and GLUT libs and devel packages and have run glxgears on my raspberry Pi3 platform with the Rasbian 8.0 distrib
I have run glxgears for to have an idea about the performance of OpenGL on it and find “bads” performances
(OK, glxgears is not really a good benchmark test but it generally give a good idea about defaults OpenGL performances on a specific platform)
pi@piYann:~/Devel/OpenGL $ glxgears
41 frames in 5.0 seconds = 8.140 FPS
98 frames in 5.0 seconds = 19.563 FPS
101 frames in 5.0 seconds = 20.129 FPS
99 frames in 5.0 seconds = 19.664 FPS
I have next runned the glxGears with --info parameter for to see what is the driver used
pi@piYann:~/Devel/OpenGL $ glxgears -info
GL_RENDERER = Gallium 0.4 on llvmpipe (LLVM 3.7, 128 bits)
GL_VERSION = 3.0 Mesa 11.1.0
GL_VENDOR = VMware, Inc.
GL_EXTENSIONS = GL_ARB_multisample GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color ...
The xdpyinfo utility give me this that seem me “not too bad” :
pi@piYann:~ $ xdpyinfo
name of display: :0.0
version number: 11.0
vendor string: The X.Org Foundation
vendor release number: 11702000
X.Org version: 1.17.2
maximum request size: 16777212 bytes
motion buffer size: 256
bitmap unit, bit order, padding: 32, LSBFirst, 32
image byte order: LSBFirst
number of supported pixmap formats: 7
supported pixmap formats:
depth 1, bits_per_pixel 1, scanline_pad 32
depth 4, bits_per_pixel 8, scanline_pad 32
depth 8, bits_per_pixel 8, scanline_pad 32
depth 15, bits_per_pixel 16, scanline_pad 32
depth 16, bits_per_pixel 16, scanline_pad 32
depth 24, bits_per_pixel 32, scanline_pad 32
depth 32, bits_per_pixel 32, scanline_pad 32
keycode range: minimum 8, maximum 255
focus: window 0x180ab68, revert to Parent
number of extensions: 28
BIG-REQUESTS
Composite
DAMAGE
DOUBLE-BUFFER
DPMS
DRI2
GLX
Generic Event Extension
MIT-SCREEN-SAVER
MIT-SHM
Present
RANDR
RECORD
RENDER
SECURITY
SGI-GLX
SHAPE
SYNC
X-Resource
XC-MISC
XFIXES
XFree86-DGA
XFree86-VidModeExtension
XINERAMA
XInputExtension
XKEYBOARD
XTEST
XVideo
default screen number: 0
number of screens: 1
screen #0:
dimensions: 1360x768 pixels (360x203 millimeters)
resolution: 96x96 dots per inch
depths (7): 16, 1, 4, 8, 15, 24, 32
root window id: 0x1aa
depth of root window: 16 planes
number of colormaps: minimum 1, maximum 1
default colormap: 0x20
default number of colormap cells: 64
preallocated pixels: black 0, white 65535
options: backing-store WHEN MAPPED, save-unders NO
largest cursor: 1360x768
current input event mask: 0x7a003f
KeyPressMask KeyReleaseMask ButtonPressMask
ButtonReleaseMask EnterWindowMask LeaveWindowMask
StructureNotifyMask SubstructureNotifyMask SubstructureRedirectMask
FocusChangeMask PropertyChangeMask
number of visuals: 61
default visual id: 0x21
visual:
visual id: 0x21
class: TrueColor
depth: 16 planes
available colormap entries: 64 per subfield
red, green, blue masks: 0xf800, 0x7e0, 0x1f
significant bits in color specification: 8 bits
...
Is the Gallium driver a good driver for the Raspberry Pi3 platform or where can I find a better graphic driver for it ?
Because only about 20 fps seem me really too slow, is the VideoCore IV GPU as “slow” as this ?
(on other side, the Raspberry Pi3 is really very very small and cheap, so this is perhaps normal …)