Upload UI Text Atlas

[temportalflux]

An atlas for letters is uploaded to GPU and text can be sent to GPU which is rendered using that atlas. Has nothing to do with texture stitching.

• There should probably be a "FontAtlas" asset type which stores this image.
• This asset has data which can map a char to a vec2 offset + size

Other Relevant Info

• Vertex buffer can be created immediately
• Index buffer would be determined based on the text being rendered
  • "Sphinx of Black Quartz, Judge my Vow" would be converted to a list of 8 indicies per character (2 triangles) which can be uploaded to an index buffer
• [UNKNOWN] How do upload index buffer to render for the next frame and also only for a small section of the screen
• https://github.com/bwoods/Vulkan/wiki/Text-Rendering is especially interesting for this epic

[temportalflux]

Font asset has been created and can be compiled to binary. Next step is creating a render pipeline for sprites to be rendered to the frame image. Text shaders are already in place, so the pipeline just needs to be created and called every frame. A FontRenderer also has to be created which will store the positions and text of currently rendering items, as well as a cache of the image that needs to be created from the font asset. Then this renderer can be called per frame to render text to the screen space.