Pronblem with glReadPixels on Pi2 - Raspberry Pi Forums

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i've not got bottom of yet, have opengl es code runs fine on pi1 b+ fails on pi2 b+.

looks call glreadpixels not working expected on pi2. use "object picking colour" , looks returning black pixel.

more details when i've had time investigate further....

petero

hmmmmm........

seems problem screen resolution. had pi2 set drive 1024x768 monitor via hdmi->vga adapter (which worked fine).

problem code not dealing resolutions other 1920x1080 when mapping position of cross-hairs cursor pixel address glread pixels.

petero


raspberrypi



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