Warn about Limits::max_non_sampler_bindings's default 1_000_000

Author: csmoe

wgpu-types/src/lib.rs

@@ -547,6 +547,12 @@ macro_rules! with_limits {
 /// limits you need boosted. This will let you stay running on all hardware that supports the limits
 /// you need.
 ///
+/// For example, [`Limits::max_non_sampler_bindings`]'s default limit is **1_000_000**:
+/// <div class="warning">
+/// On systems with integrated GPUs (iGPUs)—particularly on Windows using the D3D12
+/// backend—this can lead to significant system RAM consumption since iGPUs share system memory directly with the CPU.
+/// </div>
+///
 /// Limits "better" than the default must be supported by the adapter and requested when requesting
 /// a device. If limits "better" than the adapter supports are requested, requesting a device will
 /// panic. Once a device is requested, you may only use resources up to the limits requested _even_