obs-filters: Increase brightness precision

Necessary for adjusting colors near black.

plugins/obs-filters/chroma-key-filter.c

@@ -471,7 +471,7 @@ static obs_properties_t *chroma_key_properties_v2(void *data)
 	obs_properties_add_float_slider(props, SETTING_CONTRAST, TEXT_CONTRAST,
 					-4.0, 4.0, 0.01);
 	obs_properties_add_float_slider(props, SETTING_BRIGHTNESS,
-					TEXT_BRIGHTNESS, -1.0, 1.0, 0.01);
+					TEXT_BRIGHTNESS, -1.0, 1.0, 0.0001);
 	obs_properties_add_float_slider(props, SETTING_GAMMA, TEXT_GAMMA, -1.0,
 					1.0, 0.01);
 

plugins/obs-filters/color-correction-filter.c

@@ -652,7 +652,7 @@ static obs_properties_t *color_correction_filter_properties_v2(void *data)
 	obs_properties_add_float_slider(props, SETTING_CONTRAST, TEXT_CONTRAST,
 					-4.0, 4.0, 0.01);
 	obs_properties_add_float_slider(props, SETTING_BRIGHTNESS,
-					TEXT_BRIGHTNESS, -1.0, 1.0, 0.01);
+					TEXT_BRIGHTNESS, -1.0, 1.0, 0.0001);
 	obs_properties_add_float_slider(props, SETTING_SATURATION,
 					TEXT_SATURATION, -1.0, 5.0, 0.01);
 	obs_properties_add_float_slider(props, SETTING_HUESHIFT, TEXT_HUESHIFT,

plugins/obs-filters/color-key-filter.c

@@ -419,7 +419,7 @@ static obs_properties_t *color_key_properties_v2(void *data)
 	obs_properties_add_float_slider(props, SETTING_CONTRAST, TEXT_CONTRAST,
 					-4.0, 4.0, 0.01);
 	obs_properties_add_float_slider(props, SETTING_BRIGHTNESS,
-					TEXT_BRIGHTNESS, -1.0, 1.0, 0.01);
+					TEXT_BRIGHTNESS, -1.0, 1.0, 0.0001);
 	obs_properties_add_float_slider(props, SETTING_GAMMA, TEXT_GAMMA, -1.0,
 					1.0, 0.01);