I'm getting this warning message when rendering meshes:
"[ UNASSIGNED-BestPractices-vkCmdDrawIndexed-sparse-index-buffer ] Object 0: handle = 0x564eecccdf50, type = VK_OBJECT_TYPE_DEVICE; | MessageID = 0x9b6a1f08 | [Arm] The indices which were specified for the draw call only utilise approximately 5.89% of index buffer value range. Arm Mali architectures before G71 do not have IDVS (Index-Driven Vertex Shading), meaning all vertices corresponding to indices between the minimum and maximum would be loaded, and possibly shaded, whether or not they are used."
I think the problem is about using a u16 to represent the index.
I understand the warning, it looks like there is a possibility for vertices to be shaded even though they shouldn't be due to how some older Mali GPUs work.
Vulkan-ValidationLayers/+/HEAD/layers/best_practices_utils.cpp:2106
I'm merging several meshes in three buffers, one for index, position and another for normal + texcoord.
"Recommendations
Store positional attribute data in one buffer.
Interleave all remaining attributes in a second buffer."
https://developer.samsung.com/galaxy-gamedev/resources/articles/asset.html#interleavedvertexattributes
Meshes info:
(Monkey head) index type: u16, index count: 2904(Cone) index type: u16, index count: 186(UV Sphere) index type: u16, index count: 2880
Rendering is working perfectly but these warning messages keep popping up.
What should I do?