Crafter.Graphics/examples/HDRBloom/miss.wgsl

//SPDX-License-Identifier: MIT
//SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®

// HDRBloom miss (runs in SHADE). Dark, sub-threshold background so the
// bloom pass only picks up the bright cubes, not the sky.
fn miss_main(ray: RayDesc, payload: ptr<function, Payload>) {
    let t = clamp(ray.direction.y * 0.5 + 0.5, 0.0, 1.0);
    rtAccumulate(mix(vec3<f32>(0.015, 0.018, 0.030),
                     vec3<f32>(0.030, 0.040, 0.070), t));
}
SPDX license update 2026-07-22 18:09:06 +02:00			`//SPDX-License-Identifier: MIT`
			`//SPDX-FileCopyrightText: Copyright (C) 2026 Catcrafts®`

test(webgpu): HDRBloom example exercising the HDR post-process primitives (#27) RT→rgba16float→threshold→blur→composite, end-to-end proof of the three primitives. threshold/blur run from onBeforeUpdate (one submit each) so the storage-write→sampled-read dependency gets WebGPU's per-submit barrier (there is none between dispatches within a compute pass); the composite is a UI custom shader so it owns the canvas ping-pong. Documents the Vulkan symmetry (gap 4): the native present path records passes generically and barriers between them, so the same chain is wireable today. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> 2026-06-09 12:55:14 +00:00			`// HDRBloom miss (runs in SHADE). Dark, sub-threshold background so the`
			`// bloom pass only picks up the bright cubes, not the sky.`
			`fn miss_main(ray: RayDesc, payload: ptr<function, Payload>) {`
			`let t = clamp(ray.direction.y * 0.5 + 0.5, 0.0, 1.0);`
			`rtAccumulate(mix(vec3<f32>(0.015, 0.018, 0.030),`
			`vec3<f32>(0.030, 0.040, 0.070), t));`
			`}`