bevy_pbr 0.20.0

Adds PBR rendering to Bevy Engine
Documentation 
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//! Resets the indirect draw counts to zero.
//!
//! This shader is needed because we reuse the same indirect batch set count
//! buffer (i.e. the buffer that gets passed to `multi_draw_indirect_count` to
//! determine how many objects to draw) between phases (early, late, and main).
//! Before launching `build_indirect_params.wesl`, we need to reinitialize the
//! value to 0.

import bevy_render::occlusion_culling::mesh_preprocess_types::IndirectBatchSet;

@group(0) @binding(0) var<storage, read_write> indirect_batch_sets: array<IndirectBatchSet>;

@compute
@workgroup_size(64)
fn main(@builtin(global_invocation_id) global_invocation_id: vec3<u32>) {
    // Figure out our instance index. If this thread doesn't correspond to any
    // index, bail.
    let instance_index = global_invocation_id.x;
    if (instance_index >= arrayLength(&indirect_batch_sets)) {
        return;
    }

    // Reset the number of batch sets to 0.
    atomicStore(&indirect_batch_sets[instance_index].indirect_parameters_count, 0u);
}