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feat(renderer): add RT shadow compute pipeline and integrate into lighting pass

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Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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tolelom
2026-03-25 13:14:28 +09:00
parent 3a311e14af
commit b556cdd768
3 changed files with 130 additions and 2 deletions
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6
crates/voltex_renderer/src/deferred_lighting.wgsl
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@@ -51,6 +51,8 @@ struct ShadowUniform {
@group(2) @binding(4) var s_brdf_lut: sampler;
@group(2) @binding(5) var t_ssgi: texture_2d<f32>;
@group(2) @binding(6) var s_ssgi: sampler;
@group(2) @binding(7) var t_rt_shadow: texture_2d<f32>;
@group(2) @binding(8) var s_rt_shadow: sampler;
// ── Vertex / Fragment structs ─────────────────────────────────────────────────
@@ -264,8 +266,8 @@ fn fs_main(in: VertexOutput) -> @location(0) vec4<f32> {
// F0: base reflectivity; 0.04 for dielectrics, albedo for metals
let F0 = mix(vec3<f32>(0.04, 0.04, 0.04), albedo, metallic);
// Shadow
let shadow_factor = calculate_shadow(world_pos);
// Shadow: sample RT shadow texture (1.0 = lit, 0.0 = shadowed)
let shadow_factor = textureSample(t_rt_shadow, s_rt_shadow, uv).r;
// Accumulate contribution from all active lights
var Lo = vec3<f32>(0.0);