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randyrossi / bmc64

A bare metal Commodore 64 emulator for the Raspberry Pi with true 50hz/60hz smooth scrolling, low input latency and better audio/video sync.
GNU General Public License v3.0
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Darker image using HDMI TVs / monitors #20

Closed lroby74 closed 5 years ago

lroby74 commented 5 years ago

Hello, many friends that are using BMC64 with an HDMI TV / monitors complain that image is darker of normal while using same Raspberry and same BMC64 on a CRT TV / monitor via composite cable , image is brighter. Is possible to modify some settings for raise brightness on HDMI output?

randyrossi commented 5 years ago

Things like brightness or contrast sounds like the job of the TV. The Pi just outputs pixels and it's up to the display to control things like that. Have they tried adjusting the TV settings?

lroby74 commented 5 years ago

Many of them find the image dark even with the screen controls at maximum, and in all cases the image is always darker than other solutions (Retropie, Combian for example)

randyrossi commented 5 years ago

I would first experiment with different video modes described in the docs for config.txt. I've noticed a big difference between the default NTSC 60hz mode and the default PAL 50hz mode. The 50hz mode doesn't look as vibrant as the 60hz. It's possible Combian's video mode is different which accounts for the different experience. But you can try various 50hz modes and see what works best:

There are a bunch to chose from here:

https://www.raspberrypi.org/documentation/configuration/config-txt/video.md

lroby74 commented 5 years ago

Fixed with screen controls of 1.6 version