ColorPickers interferences

[fmauclere]

First of all, thank you @ocornut for your fantastic work.

I found a bug on ColorPickers (both RGB and RGBA versions).

With ImGui v1.89.2, when I do this :

static float aaa[4] = { 0, 0, 0, 0 };
static float bbb[4] = { 0, 0, 0, 0 };

if (ImGui::Begin("window aaa"))
  ImGui::ColorPicker4("aaa", aaa);
ImGui::End();

if (ImGui::Begin("window bbb"))
  ImGui::ColorPicker4("bbb", bbb);
ImGui::End();

The ColorPickers seem to interfere with each other when their RGB values are the same full black or full white (all 0 or all 255).
If I use the vertical color bar on the right side of aaa, then the aspect of bbb will also change.

[ocornut]

Thank you for reporting. We have code trying to preserve HSV properties for lossy round-trips via encoded u32 value and it seems it has a problem here.

[ocornut]

Pushed fix fa0852f
Thank you for reporting !