forge-ui-rendering

To render an immediate-mode UI on the GPU with a single draw call, you batch all widgets into one vertex and index stream. This pipeline uses SDL GPU to draw the entire interface via a single SDL_DrawGPUIndexedPrimitives call.

Font atlas rendering for SDL GPU UI pipelines works by binding a single atlas texture with a linear clamp sampler. The pipeline applies alpha blending to produce crisp UI text alongside batched interface elements in one draw call.

To set up a 2D UI rendering pipeline with SDL GPU, you need an atlas texture, a linear clamp sampler, and an orthographic projection. You also need a per-frame transfer buffer workflow to stream vertex and index data.

Yes, you can use this pipeline if your ForgeUiContext produces vertex and index arrays. The pipeline is specifically designed to consume those arrays and render the immediate-mode interface using dynamic buffer streaming.

The best way to batch UI widgets and text into one GPU draw call is to combine them into a single vertex and index stream bound to one atlas texture. This approach eliminates multiple state changes and renders the entire frame at once.

Dynamic buffer streaming for immediate-mode UI requires a specific per-frame transfer buffer workflow. You must correctly copy vertex and index arrays into transfer buffers before binding them to the SDL_DrawGPUIndexedPrimitives call.