Bug 4950

Summary: Black rendering of windowed Open GLES applications on iMX6 Vivante under X11
Product: [Build System, Metadata & Runtime] BSPs Reporter: Diego <diego.ml>
Component: bsps-meta-fsl-armAssignee: Otavio Salvador <otavio>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: Medium CC: angolini
Version: 1.4   
Target Milestone: 1.5   
Hardware: Other   
OS: arm   
Whiteboard:
OS type for building Yocto: --- Type of Regression: New (Never tested)
Verified: Documentation change: No (bug/feature does not impact docs)

Description Diego 2013-07-29 14:51:47 UTC 
Board: Boundary Devices Nitrogen6x

Description: windowed OpenGL ES applications rendering is wrong as only a black window appears.
Tested with: mesa-demos' es2gears_x11; glmark2's glmark2-es2 and, on softfp builds, vivante-gpu-sdk samples.

On the contrary fullscreen rendering is ok.
Tested with: glmark2's "glmark2-es2 --fullscreen"

This seems related in a weird way to unity-2d-launcher; see:
https://community.freescale.com/thread/309990
Comment 1 Diego 2013-07-29 14:57:12 UTC 
By the way, problem has been verified on all the following BSPs:
3.0.35-1.1.0; 3.0.35-4.0.0; 3.5.7-1.0.0
Comment 2 Otavio Salvador 2013-07-29 16:34:09 UTC 
In 3.5.7-1.0.0 can you give a try to run the glmark app using:

$: VIV_DESKTOP=0 glmark-es2

and see if it helps?
Comment 3 Diego 2013-07-29 17:37:43 UTC 
(In reply to comment #2)
> In 3.5.7-1.0.0 can you give a try to run the glmark app using:
> 
> $: VIV_DESKTOP=0 glmark-es2
> 
> and see if it helps?

It works, but with horrible performances:


# export VIV_DESKTOP=0
# glmark2-es2 
=======================================================
    glmark2 2012.12
=======================================================
    OpenGL Information
    GL_VENDOR:     Vivante Corporation
    GL_RENDERER:   GC2000 core
    GL_VERSION:    OpenGL ES 2.0
=======================================================
[build] use-vbo=false: FPS: 33 FrameTime: 30.303 ms
[build] use-vbo=true: FPS: 34 FrameTime: 29.412 ms
[texture] texture-filter=nearest: FPS: 33 FrameTime: 30.303 ms
[texture] texture-filter=linear:^C
# es2gears_x11 
EGL_VERSION = 1.4
vertex shader info: 
fragment shader info: 
info: 
3 frames in 5.1 seconds =  0.590 FPS
2 frames in 5.1 seconds =  0.393 FPS
2 frames in 5.1 seconds =  0.393 FPS
2 frames in 5.1 seconds =  0.393 FPS
^C


How did you get that magic variable?
Comment 4 Otavio Salvador 2013-07-29 17:40:54 UTC 
Someone told me ;-) but I wanted to confirm you get same horrible performance too.

For now we cannot do much. I am setting  this as 'WaitForUpstream' as this need to be fixed by Freescale/Vivante.
Comment 5 Otavio Salvador 2013-09-04 19:44:54 UTC 
This has been fixed in 3.5.7-1.0.0-alpha.2 release; I am closing this one.