Add informative comments for directional light thin scattering

Signed-off-by: Santi Paprika <santi.gonzalez.cs@gmail.com>
2021-12-02 13:32:28 +01:00
parent 348c3cc0f6
commit 2b99867225
1 changed files with 5 additions and 0 deletions
@@ -18,6 +18,8 @@ void ApplyDirectionalLights(Surface surface, inout LightingData lightingData)
    // Shadowed check
    const uint shadowIndex = ViewSrg::m_shadowIndexDirectionalLight;
    float litRatio = 1.0f;
+
+    // Transmission distance inside object
    float transmissionDistance = 0.0f;

    if (o_enableShadows && shadowIndex <  SceneSrg::m_directionalLightCount)
@@ -57,6 +59,9 @@ void ApplyDirectionalLights(Surface surface, inout LightingData lightingData)
        // [GFX TODO][ATOM-2012] care of multiple directional light
        // Currently shadow check is done only for index == shadowIndex.
        float currentLitRatio = 1.0f;
+
+        // Transmission distance from current light inside object (default non-influential values)
+        // o_transmission_mode == NONE is not taken into account because GetBackLighting already ignores this case 
        float currentTransmissionDistance = (o_transmission_mode == TransmissionMode::ThickObject) ? 0.0f : 9999.0f;
        if (o_enableShadows)
        {