GL was missing a check whether given format is available on a target
(for example double types are not on ES), and for Vulkan we need something
similar to pixel format mapping as well.
Similarly to PixelFormat. Will be useful for Vulkan, unfortunately not
so much for GL because there the format is specified by three orthogonal
values and it's a terrible mess.
With API analogous to the (relatively) new AnimationData -- with one
buffer containing all index data and one buffer containing all vertex
data, both meant to be uploaded as-is to the GPU.
This will eventually replace MeshData2D and MeshData3D, backwards
compatibility and wiring up to other APIs will be done in follow-up
commits.
This deliberately doesn't follow the PixelFormat enum naming, as RGBA
components make no sense for most vertex data. Checking Metal and
WebGPU, they seem to have arrived at a similar conclusion, only VkFormat
is an outlier.
Vladimír Vondruš