private void PreRenderEvent(VolumeLightManager renderer, Matrix4x4 viewProj)
{
if (thisLight.enabled == false || direMaterial == null)
{
return;
}
direMaterial.SetVector("_CameraForward", Camera.current.transform.forward);
direMaterial.SetInt("_SampleCount", SampleCount);
direMaterial.SetVector("_NoiseVelocity", new Vector4(NoiseVelocity.x, NoiseVelocity.y) * NoiseScale);
direMaterial.SetVector("_NoiseData", new Vector4(NoiseScale, NoiseIntensity, NoiseIntensityOffset));
direMaterial.SetVector("_MieG", new Vector4(1 - (HenyeyGreensteinG * HenyeyGreensteinG), 1 + (HenyeyGreensteinG * HenyeyGreensteinG), 2 * HenyeyGreensteinG, 1.0f / (4.0f * Mathf.PI)));
direMaterial.SetVector("_VolumetricLight", new Vector4(ScatteringCoef, ExtinctionCoef, thisLight.range, 1.0f - SkyboxExtinctionCoef));
direMaterial.SetTexture("_CameraDepthTexture", renderer.GetVolumeLightDepthBuffer());
direMaterial.SetFloat("_ZTest", (int)UnityEngine.Rendering.CompareFunction.Always);
if (HeightFog)
{
direMaterial.EnableKeyword("HEIGHT_FOG");
direMaterial.SetVector("_HeightFog", new Vector4(GroundLevel, HeightScale));
}
else
{
direMaterial.DisableKeyword("HEIGHT_FOG");
}
SetupDirectionalLight(renderer, viewProj);
}
private void SetupDirectionalLight(VolumeLightManager renderer, Matrix4x4 viewProj)
{
commandBuffer.Clear();
int pass = 0;
direMaterial.SetPass(pass);
if (Noise)
{
direMaterial.EnableKeyword("NOISE");
}
else
{
direMaterial.DisableKeyword("NOISE");
}
direMaterial.SetVector("_LightDir", new Vector4(thisLight.transform.forward.x, thisLight.transform.forward.y, thisLight.transform.forward.z, 1.0f / (thisLight.range * thisLight.range)));
direMaterial.SetVector("_LightColor", thisLight.color * thisLight.intensity);
direMaterial.SetFloat("_MaxRayLength", MaxRayLength);
if (thisLight.cookie == null)
{
direMaterial.EnableKeyword("DIRECTIONAL");
direMaterial.DisableKeyword("DIRECTIONAL_COOKIE");
}
else
{
direMaterial.EnableKeyword("DIRECTIONAL_COOKIE");
direMaterial.DisableKeyword("DIRECTIONAL");
direMaterial.SetTexture("_LightTexture0", thisLight.cookie);
}
_frustumCorners[0] = Camera.current.ViewportToWorldPoint(new Vector3(0, 0, Camera.current.farClipPlane));
_frustumCorners[2] = Camera.current.ViewportToWorldPoint(new Vector3(0, 1, Camera.current.farClipPlane));
_frustumCorners[3] = Camera.current.ViewportToWorldPoint(new Vector3(1, 1, Camera.current.farClipPlane));
_frustumCorners[1] = Camera.current.ViewportToWorldPoint(new Vector3(1, 0, Camera.current.farClipPlane));
#if UNITY_5_4_OR_NEWER
direMaterial.SetVectorArray("_FrustumCorners", _frustumCorners);
#else
_material.SetVector("_FrustumCorners0", _frustumCorners[0]);
_material.SetVector("_FrustumCorners1", _frustumCorners[1]);
_material.SetVector("_FrustumCorners2", _frustumCorners[2]);
_material.SetVector("_FrustumCorners3", _frustumCorners[3]);
#endif
Texture nullTexture = null;
if (thisLight.shadows != LightShadows.None)
{
direMaterial.EnableKeyword("SHADOWS_DEPTH");
commandBuffer.Blit(nullTexture, renderer.GetVolumeLightBuffer(), direMaterial, pass);
}
else
{
direMaterial.DisableKeyword("SHADOWS_DEPTH");
renderer.commandBuffers[0].Blit(nullTexture, renderer.GetVolumeLightBuffer(), direMaterial, pass);
}
}
private void SetupPointLight(VolumeLightManager renderer, Matrix4x4 viewProj)
{
commandBuffer.Clear();
int pass = 1;
if (!IsCameraInPointLightBounds())
{
pass = 1;
}
poinMaterial.SetPass(pass);
float scale = thisLight.range * 2.0f;
Matrix4x4 world = Matrix4x4.TRS(transform.position, thisLight.transform.rotation, new Vector3(scale, scale, scale));
poinMaterial.SetMatrix("_WorldViewProj", viewProj * world);
poinMaterial.SetMatrix("_WorldView", Camera.current.worldToCameraMatrix * world);
if (Noise)
{
poinMaterial.EnableKeyword("NOISE");
}
else
{
poinMaterial.DisableKeyword("NOISE");
}
poinMaterial.SetVector("_LightPos", new Vector4(thisLight.transform.position.x, thisLight.transform.position.y, thisLight.transform.position.z, 1.0f / (thisLight.range * thisLight.range)));
poinMaterial.SetColor("_LightColor", thisLight.color * thisLight.intensity);
if (thisLight.cookie == null)
{
poinMaterial.EnableKeyword("POINT");
poinMaterial.DisableKeyword("POINT_COOKIE");
}
else
{
Matrix4x4 view = Matrix4x4.TRS(thisLight.transform.position, thisLight.transform.rotation, Vector3.one).inverse;
poinMaterial.SetMatrix("_MyLightMatrix0", view);
poinMaterial.EnableKeyword("POINT_COOKIE");
poinMaterial.DisableKeyword("POINT");
poinMaterial.SetTexture("_LightTexture0", thisLight.cookie);
}
bool forceShadowsOff = false;
if ((thisLight.transform.position - Camera.current.transform.position).magnitude >= QualitySettings.shadowDistance)
{
forceShadowsOff = true;
}
if (thisLight.shadows != LightShadows.None && forceShadowsOff == false)
{
poinMaterial.EnableKeyword("SHADOWS_CUBE");
commandBuffer.SetGlobalTexture("_ShadowMapTexture", BuiltinRenderTextureType.CurrentActive);
commandBuffer.SetRenderTarget(renderer.GetVolumeLightBuffer());
commandBuffer.DrawMesh(sphereMesh, world, poinMaterial, 0, pass);
}
else
{
poinMaterial.DisableKeyword("SHADOWS_CUBE");
}
}
private void SetupSpotLight(VolumeLightManager renderer, Matrix4x4 viewProj)
{
commandBuffer.Clear();
int pass = 0;
if (!IsCameraInSpotLightBounds())
{
pass = 1;
}
float scale = thisLight.range;
float angleScale = Mathf.Tan((thisLight.spotAngle + 1) * 0.5f * Mathf.Deg2Rad) * thisLight.range;
Matrix4x4 world = Matrix4x4.TRS(transform.position, transform.rotation, new Vector3(angleScale, angleScale, scale));
Matrix4x4 view = Matrix4x4.TRS(thisLight.transform.position, thisLight.transform.rotation, Vector3.one).inverse;
Matrix4x4 clip = Matrix4x4.TRS(new Vector3(0.5f, 0.5f, 0.0f), Quaternion.identity, new Vector3(-0.5f, -0.5f, 1.0f));
Matrix4x4 proj = Matrix4x4.Perspective(thisLight.spotAngle, 1, 0, 1);
spotMaterial.SetMatrix("_MyLightMatrix0", clip * proj * view);
spotMaterial.SetMatrix("_WorldViewProj", viewProj * world);
spotMaterial.SetVector("_LightPos", new Vector4(thisLight.transform.position.x, thisLight.transform.position.y, thisLight.transform.position.z, 1.0f / (thisLight.range * thisLight.range)));
spotMaterial.SetVector("_LightColor", thisLight.color * thisLight.intensity);
Vector3 apex = transform.position;
Vector3 axis = transform.forward;
Vector3 center = apex + axis * thisLight.range;
float d = -Vector3.Dot(center, axis);
spotMaterial.SetFloat("_PlaneD", d);
spotMaterial.SetFloat("_CosAngle", Mathf.Cos((thisLight.spotAngle + 1) * 0.5f * Mathf.Deg2Rad));
spotMaterial.SetVector("_ConeApex", new Vector4(apex.x, apex.y, apex.z));
spotMaterial.SetVector("_ConeAxis", new Vector4(axis.x, axis.y, axis.z));
spotMaterial.EnableKeyword("SPOT");
if (Noise)
{
spotMaterial.EnableKeyword("NOISE");
}
else
{
spotMaterial.DisableKeyword("NOISE");
}
spotMaterial.SetTexture("_LightTexture0", renderer.spotTexutre);
bool forceShadowsOff = false;
if ((thisLight.transform.position - Camera.current.transform.position).magnitude >= QualitySettings.shadowDistance)
{
forceShadowsOff = true;
}
if (thisLight.shadows != LightShadows.None && forceShadowsOff == false)
{
clip = Matrix4x4.TRS(new Vector3(0.5f, 0.5f, 0.5f), Quaternion.identity, new Vector3(0.5f, 0.5f, 0.5f));
if (_reversedZ)
{
proj = Matrix4x4.Perspective(thisLight.spotAngle, 1, thisLight.range, thisLight.shadowNearPlane);
}
else
{
proj = Matrix4x4.Perspective(thisLight.spotAngle, 1, thisLight.shadowNearPlane, thisLight.range);
}
Matrix4x4 m = clip * proj;
m[0, 2] *= -1;
m[1, 2] *= -1;
m[2, 2] *= -1;
m[3, 2] *= -1;
spotMaterial.SetMatrix("_MyWorld2Shadow", m * view);
spotMaterial.SetMatrix("_WorldView", m * view);
spotMaterial.EnableKeyword("SHADOWS_DEPTH");
commandBuffer.SetGlobalTexture("_ShadowMapTexture", BuiltinRenderTextureType.CurrentActive);
commandBuffer.SetRenderTarget(renderer.GetVolumeLightBuffer());
commandBuffer.DrawMesh(spotMesh, world, spotMaterial, 0, pass);
renderer.commandBuffers[0].DrawMesh(spotMesh, world, spotMaterial, 0, pass);
}
else
{
spotMaterial.DisableKeyword("SHADOWS_DEPTH");
renderer.commandBuffers[0].DrawMesh(spotMesh, world, spotMaterial, 0, pass);
}
}
