Revision control
++ {
++ "QEN": {
++ "description": "This effect adjusts the source item colors. Brightness adjustment changes the perceived luminance of the source item. Contrast adjustment increases or decreases the color and brightness variations.",
++ "fragmentCode": [
++ "@main",
++ "{",
++ " fragColor.rgb /= max(1.0/256.0, fragColor.a);",
++ " float c = 1.0 + brightnessContrastContrast;",
++ " float contrastGainFactor = 1.0 + c * c * c * c * step(0.0, brightnessContrastContrast);",
++ " fragColor.rgb = ((fragColor.rgb - 0.5) * (contrastGainFactor * brightnessContrastContrast + 1.0)) + 0.5;",
++ " fragColor.rgb = mix(fragColor.rgb, vec3(step(0.0, brightnessContrastBrightness)), abs(brightnessContrastBrightness));",
++ " fragColor = vec4(fragColor.rgb * fragColor.a, fragColor.a);",
++ "}"
++ ],
++ "name": "BrightnessContrast",
++ "properties": [
++ {
++ "defaultValue": "0",
++ "description": "This property defines how much the source brightness is increased or decreased.\n\nThe value ranges from -1.0 to 1.0. By default, the property is set to 0.0 (no change).",
++ "maxValue": "1",
++ "minValue": "-1",
++ "name": "brightnessContrastBrightness",
++ "type": "float"
++ },
++ {
++ "defaultValue": "0",
++ "description": "This property defines how much the source contrast is increased or decreased. The decrease of the contrast is linear, but the increase is applied with a non-linear curve to allow very high contrast adjustment at the high end of the value range.\n\nThe value ranges from -1.0 to 1.0. By default, the property is set to 0.0 (no change).",
++ "maxValue": "1",
++ "minValue": "-1",
++ "name": "brightnessContrastContrast",
++ "type": "float"
++ }
++ ],
++ "version": 1
++ }
++ }