ImGui.ImFontAtlas_Build

Remarks

Builds the atlas pixel data. FontAtlas_GetTexDataAsAlpha8(self) and FontAtlas_GetTexDataAsRGBA32(self) call this automatically when needed.

• Upload the pixels to graphics memory, then store the texture handle with ImFontAtlas_SetTexID(self, textureId).
• Row pitch is Width * BytesPerPixel; supported output formats use 1 or 4 bytes per pixel.
• RGBA32 is provided for compatibility and convenience. Unless custom colored data is written, such as through the custom-rectangle API, its RGB channels are white and account for roughly 75% of the memory and bandwidth.