static void SetupSpotLight(VolumetricLight light, CommandBuffer cb, Vector3 lightPos, bool drawShadows)
{
float angleScale = Mathf.Tan((light.spotAngle + 1) * 0.5f * Mathf.Deg2Rad) * light.range;
Quaternion rotation = light.transform.rotation;
Matrix4x4 world = Matrix4x4.TRS(lightPos, rotation, new Vector3(angleScale, angleScale, light.range));
Matrix4x4 view = Matrix4x4.TRS(lightPos, rotation, Vector3.one).inverse;
Vector3 fwd = light.transform.forward;
// cosAngle, planeD,
Vector2 extraParams = new Vector2(Mathf.Cos((light.spotAngle + 1) * 0.5f * Mathf.Deg2Rad), -Vector3.Dot((lightPos + fwd * light.lightC.range), fwd));
cb.SetGlobalVector(_ConeAxis, fwd);
SetNonDirectionalParams(light, cb, lightPos, ref world, drawShadows, extraParams);
if (light.cookie != null)
{
Matrix4x4 proj = Matrix4x4.Perspective(light.spotAngle, 1, 0, 1);
cb.SetGlobalMatrix(_MyLightMatrix0, spotClipNeg * proj * view);
}
if (drawShadows)
{
Matrix4x4 proj = Matrix4x4.Perspective(light.spotAngle, 1, SystemInfo.usesReversedZBuffer ? light.range : light.lightC.shadowNearPlane, SystemInfo.usesReversedZBuffer ? light.lightC.shadowNearPlane : light.range);
Matrix4x4 m = spotClip * proj;
m[0, 2] *= -1; m[1, 2] *= -1; m[2, 2] *= -1; m[3, 2] *= -1;
cb.SetGlobalMatrix(_MyWorld2Shadow, m * view);
}
cb.DrawMesh(VolumetricLightUtils.spotlightMesh, world, VolumetricLightUtils.GetMaterial(LightType.Spot), 0, IsCameraInSpotLightBounds(light, fwd) ? 0 : 1);
}
static void SetupDirectionalLight(VolumetricLight light, CommandBuffer cb, bool drawShadows)
{
if (drawShadows)
{
cb.SetGlobalTexture(_World2ShadowTex, light.world2ShadowCache.world2ShadowTex);
}
cb.Blit(null as Texture, _RenderTarget, VolumetricLightUtils.GetMaterial(LightType.Directional), 0);
}
static void SetupPointLight(VolumetricLight light, CommandBuffer cb, Vector3 lightPos, bool drawShadows)
{
Matrix4x4 world = Matrix4x4.TRS(lightPos, Quaternion.identity, Vector3.one * light.range * 2.0f);
SetNonDirectionalParams(light, cb, lightPos, ref world, drawShadows, Vector2.zero);
//view
if (light.cookie != null)
{
cb.SetGlobalMatrix(_MyLightMatrix0, Matrix4x4.TRS(lightPos, light.transform.rotation, Vector3.one).inverse);
}
cb.DrawMesh(RenderUtils.GetMesh(PrimitiveType.Sphere), world, VolumetricLightUtils.GetMaterial(LightType.Point), 0, IsCameraInPointLightBounds(light) ? 0 : 1);
}
