awsm-renderer 0.3.3

awsm-renderer
Documentation 
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//! HZB shader cache keys.

use crate::{render_passes::shader_cache_key::ShaderCacheKeyRenderPass, shaders::ShaderCacheKey};

/// Cache key for the HZB seed shader (depth → hzb mip 0). The MSAA
/// mode matters because the depth texture's binding type changes.
#[derive(Hash, Debug, Clone, PartialEq, Eq)]
pub struct ShaderCacheKeyHzbSeed {
    pub msaa_sample_count: Option<u32>,
}

impl From<ShaderCacheKeyHzbSeed> for ShaderCacheKey {
    fn from(key: ShaderCacheKeyHzbSeed) -> Self {
        ShaderCacheKey::RenderPass(ShaderCacheKeyRenderPass::HzbSeed(key))
    }
}

/// Cache key for the HZB reduce shader (mip N-1 → mip N).
/// Format-only — no per-frame variation; one shared pipeline.
#[derive(Hash, Debug, Clone, PartialEq, Eq, Default)]
pub struct ShaderCacheKeyHzbReduce;

impl From<ShaderCacheKeyHzbReduce> for ShaderCacheKey {
    fn from(key: ShaderCacheKeyHzbReduce) -> Self {
        ShaderCacheKey::RenderPass(ShaderCacheKeyRenderPass::HzbReduce(key))
    }
}