ShaderEffect does not work on raspberry yocto

Mesrine

Hello everyone,
I have been playing with shaders and Qt. I have created this repo
https://github.com/EddyTheCo/OMClient

That uses shaders. The shaders are shown correctly on WASM and Linux desktops. But in a yocto image with meta-qt6 in a raspberry-pi 3b it gives the runtime error:

Failed to register allocate:
BLOCK 0:
...
A lot of stuff
...
2       E2273, E2278 v8adds tlb_c, t2273,t2278

And nothing is shown. This messages comes from mesa-vc4.
I have some shaders that work ok on the Raspberry, but this one gives this runtime error.
The shader code works if I change the code showing the drawing but if add more code it does not.

Like this works:

void main( void)
{
    vec2 uv=vec2(qt_TexCoord0.x*2.0-1.0,1.0-qt_TexCoord0.y*2.0);
    uv.x *= pixelStep.y/pixelStep.x;

    vec3 fcolor=vec3(0.0);

    fcolor= codeZeroAm(uv) /*+
            codeZeroPm(uv) +
            codeOneAm(uv)  +
            codeOnePm(uv)  +
            codeTwoAm(uv)  +
            codeTwoPm(uv)  +
            codeThree(uv)*/;


    vec4 bcolor=texture(src, uv).rgba;
    vec4 color=mix(bcolor, vec4(fcolor,1.0), step(0.0000001,length(fcolor)));

    fragColor = vec4(fcolor,1.0);

}

but like this

void main( void)
{
    vec2 uv=vec2(qt_TexCoord0.x*2.0-1.0,1.0-qt_TexCoord0.y*2.0);
    uv.x *= pixelStep.y/pixelStep.x;

    vec3 fcolor=vec3(0.0);

    fcolor= codeZeroAm(uv) +
            codeZeroPm(uv) /*+
            codeOneAm(uv)  +
            codeOnePm(uv)  +
            codeTwoAm(uv)  +
            codeTwoPm(uv)  +
            codeThree(uv)*/;


    vec4 bcolor=texture(src, uv).rgba;
    vec4 color=mix(bcolor, vec4(fcolor,1.0), step(0.0000001,length(fcolor)));

    fragColor = vec4(fcolor,1.0);

}

gives the runtime error.

Any help will be much appreciated.

Mesrine

@Mesrine

I have optimized my shaders and now they work on the raspberry pi. There seems to be a problem with the number of registers the raspberry pi has with respect to other devices.