HSV and software RGB waveforms render levels too high (appear clipped)

[mixxxbot]

Reported by: Pegasus-RPG
Date: 2015-12-07T23:38:45Z
Status: New
Importance: Low
Launchpad Issue: lp1523712
Tags: gui, waveform
Attachments: [Software RGB waveform showing a quieter section of music](https://bugs.launchpad.net/bugs/1523712/+attachment/4531201/+files/Software RGB waveform showing a quieter section of music), [OpenGL RGB waveform showing the same quieter section of music](https://bugs.launchpad.net/bugs/1523712/+attachment/4531202/+files/OpenGL RGB waveform showing the same quieter section of music), [Software RGB waveform showing a louder section of music](https://bugs.launchpad.net/bugs/1523712/+attachment/4531203/+files/Software RGB waveform showing a louder section of music), [OpenGL RGB waveform showing the same louder section of music](https://bugs.launchpad.net/bugs/1523712/+attachment/4531204/+files/OpenGL RGB waveform showing the same louder section of music)

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As of r5685 of the 2.0 branch, the RGB and HSV software waveforms appear to render levels 50% higher than all of the others. (The GL version of the RGB waveform looks correct as does the software Filtered one.)

[mixxxbot]

Commented by: Pegasus-RPG
Date: 2015-12-07T23:40:58Z
Attachments: [Software RGB waveform showing a quieter section of music](https://bugs.launchpad.net/mixxx/+bug/1523712/+attachment/4531201/+files/Software RGB waveform showing a quieter section of music)

[mixxxbot]

Commented by: Pegasus-RPG
Date: 2015-12-07T23:41:29Z
Attachments: [OpenGL RGB waveform showing the same quieter section of music](https://bugs.launchpad.net/mixxx/+bug/1523712/+attachment/4531202/+files/OpenGL RGB waveform showing the same quieter section of music)

[mixxxbot]

Commented by: Pegasus-RPG
Date: 2015-12-07T23:45:04Z
Attachments: [Software RGB waveform showing a louder section of music](https://bugs.launchpad.net/mixxx/+bug/1523712/+attachment/4531203/+files/Software RGB waveform showing a louder section of music)

[mixxxbot]

Commented by: Pegasus-RPG
Date: 2015-12-07T23:45:32Z
Attachments: [OpenGL RGB waveform showing the same louder section of music](https://bugs.launchpad.net/mixxx/+bug/1523712/+attachment/4531204/+files/OpenGL RGB waveform showing the same louder section of music)

[mixxxbot]

Duplicate of #8406