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Issue on webgl on a chromium port with Mali 400 GPU.

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Hi,

I am working on a linux (directfb/fbdev) port of chromium on a set top box platform which has a  Mali-400 GPU.

I have an issue with an HTML application creating a webgl context in RGB (without alpha).

 

After analysis, we can see that chromium creates a frame buffer object, and tries to attach a texture via glFramebufferTexture2D. When checking the status via glCheckFramebufferStatus, we get the error GL_FRAMEBUFFER_UNSUPPORTED. This issue happens only if the color buffer is in format GL_RGB. There is no issue if the format is GL_RGBA.

 

it seems that the Mali-400 opengl implementation does not support RGB texture as a frame buffer attachment. Is it the case?

 

Thanks&Regards,

Lidwine


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