[meta-freescale] BSP 1.1.0 vs. OpenGL ES2.0/Qt5

[Thomas Senyk]

Hi,

I think it's time to start a independent thread about (my) inability to get 
anything OpenGL ES2.0 related running on the new BSP (aka.: "[PATCH v4 0/9] 
iMX6Q BSP 1.1.0 upgrade")

fyi: I'm always building without 'x11' in DISTRO_FEATURES


My findings so far:
1. Someone mentioned that it's possible to deploy/unpack the 1.1.0 drivers on 
top of a 12.04.01-image and still run Qt5.
I can confirm this!
This means it's NOT the libraries (aka. driver?) which are causing this 
problem!

(From here on everything is based on a "PATCHv4"-build!)

2. I can't get any of the viv_samples running!
Their behavior is rather erratic
(sometimes errors and crashes, something just black screen nothing on stdout)
  ... I guess it's because they "pollute" the drivers-state if they crash...

Anyway: Very often I get errors like:

VertexShader: chiclet.vert: comiple error 
FragmentShader: chiclet.frag: comiple error 
ShaderProgram: null vertex program
Segmentation fault


.. which look very similar to the Qt errors I have:
QOpenGLShader::compile(Vertex): failed
Problematic Vertex shader source code ***
attribute mediump vec4 vertexCoord;              
attribute mediump vec4 vertexColor;              
uniform mediump mat4 matrix;                     
uniform mediump float opacity;                   
varying lowp vec4 color;                       
void main() {                                  
    gl_Position = matrix * vertexCoord;        
    color = vertexColor * opacity;             
} 



Can anyone confirm or contradict* this?

*can you build a image bases on the PATCHv4, and any of viv_samples (which use 
es2.0) on the screen?



3. It's not because of former "highp"-error (I replaced all 'highp' within the 
Qt code with 'mediump')




... The next thing I'll do is build without PATCHv4 ... as some patches have 
already gone in (e.g. kernel) it might be that it's not about PATHv4, but 
rather about the patches already in.
  ... I'll give a update tomorrow.



Greets
Thomas