Text appears as white rectangles on my custom vulkan renderer

[eladmaimoni]

I am following Sascha Willems example on how to integrate imgui with a Vulkan renderer.

Trying to render this simple window:

    ImGui::NewFrame();
    ImGui::SetNextWindowSize(ImVec2(128, 64), ImGuiCond_FirstUseEver);
    ImGui::Begin("Test Window", nullptr);
    ImGui::Text("Test Text");
    ImGui::End();
    ImGui::Render();

Yields the following:

Unfortunately text appears as white rectangles.
I examined the rendering process against Sascha Willem code using Renderdoc but haven't yet found what went wrong.

Here is a link to the renderdoc file and relevant code files.

From my examination, it seems that vertex data and textures are loaded correctly. but the two samples have a slightly different font texture and as a result, slightly different uv coordinates per vertex. But nothing to explain why the textured text quads appear completely white. I guess the difference in the font texture emanate from the fact that I use a different imgui version (latest docking branch from vcpkg).

Does anyone have an idea what could lead to such result?

I would be happy to share more info if you think it is relevant (code, renderdoc files) but I wish to avoid clutter this post with too much code.

[jeremyong]

Without looking at the code just yet (on mobile) I'm assuming you don't have the blend state set up correctly for alpha blending on your ImGui pso