private void SetupSpotLight(Nigiri renderer, Matrix4x4 viewProj)
{
_commandBuffer.Clear();
int pass = 1;
if (!IsCameraInSpotLightBounds())
{
pass = 3;
}
Mesh mesh = Nigiri.GetSpotLightMesh();
float scale = _light.range;
float angleScale = Mathf.Tan((_light.spotAngle + 1) * 0.5f * Mathf.Deg2Rad) * _light.range;
Matrix4x4 world = Matrix4x4.TRS(transform.position, transform.rotation, new Vector3(angleScale, angleScale, scale));
Matrix4x4 view = Matrix4x4.TRS(_light.transform.position, _light.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(_light.spotAngle, 1, 0, 1);
_material.SetMatrix("_MyLightMatrix0", clip * proj * view);
_material.SetMatrix("_WorldViewProj", viewProj * world);
_material.SetVector("_LightPos", new Vector4(_light.transform.position.x, _light.transform.position.y, _light.transform.position.z, 1.0f / (_light.range * _light.range)));
_material.SetVector("_LightColor", _light.color * _light.intensity);
Vector3 apex = transform.position;
Vector3 axis = transform.forward;
// plane equation ax + by + cz + d = 0; precompute d here to lighten the shader
Vector3 center = apex + axis * _light.range;
float d = -Vector3.Dot(center, axis);
// update material
_material.SetFloat("_PlaneD", d);
_material.SetFloat("_CosAngle", Mathf.Cos((_light.spotAngle + 1) * 0.5f * Mathf.Deg2Rad));
_material.SetVector("_ConeApex", new Vector4(apex.x, apex.y, apex.z));
_material.SetVector("_ConeAxis", new Vector4(axis.x, axis.y, axis.z));
_material.EnableKeyword("SPOT");
if (Noise)
{
_material.EnableKeyword("NOISE");
}
else
{
_material.DisableKeyword("NOISE");
}
if (_light.cookie == null)
{
_material.SetTexture("_LightTexture0", Nigiri.GetDefaultSpotCookie());
}
else
{
_material.SetTexture("_LightTexture0", _light.cookie);
}
bool forceShadowsOff = false;
if ((_light.transform.position - Camera.current.transform.position).magnitude >= QualitySettings.shadowDistance)
{
forceShadowsOff = true;
}
if (_light.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(_light.spotAngle, 1, _light.range, _light.shadowNearPlane);
}
else
{
proj = Matrix4x4.Perspective(_light.spotAngle, 1, _light.shadowNearPlane, _light.range);
}
Matrix4x4 m = clip * proj;
m[0, 2] *= -1;
m[1, 2] *= -1;
m[2, 2] *= -1;
m[3, 2] *= -1;
//view = _light.transform.worldToLocalMatrix;
_material.SetMatrix("_MyWorld2Shadow", m * view);
_material.SetMatrix("_WorldView", m * view);
_material.EnableKeyword("SHADOWS_DEPTH");
_commandBuffer.SetGlobalTexture("_ShadowMapTexture", BuiltinRenderTextureType.CurrentActive);
_commandBuffer.SetRenderTarget(renderer.GetVolumeLightBuffer());
_commandBuffer.DrawMesh(mesh, world, _material, 0, pass);
if (CustomRenderEvent != null)
{
CustomRenderEvent(renderer, this, _commandBuffer, viewProj);
}
}
else
{
_material.DisableKeyword("SHADOWS_DEPTH");
renderer.GlobalCommandBuffer.DrawMesh(mesh, world, _material, 0, pass);
if (CustomRenderEvent != null)
{
CustomRenderEvent(renderer, this, renderer.GlobalCommandBuffer, viewProj);
}
}
}
private void SetupDirectionalLight(Nigiri renderer, Matrix4x4 viewProj)
{
if (_commandBuffer == null)
{
Start();
}
_commandBuffer.Clear();
int pass = 4;
_material.SetPass(pass);
if (Noise)
{
_material.EnableKeyword("NOISE");
}
else
{
_material.DisableKeyword("NOISE");
}
_material.SetVector("_LightDir", new Vector4(_light.transform.forward.x, _light.transform.forward.y, _light.transform.forward.z, 1.0f / (_light.range * _light.range)));
_material.SetVector("_LightColor", _light.color * _light.intensity);
_material.SetFloat("_MaxRayLength", MaxRayLength);
if (_light.cookie == null)
{
_material.EnableKeyword("DIRECTIONAL");
_material.DisableKeyword("DIRECTIONAL_COOKIE");
}
else
{
_material.EnableKeyword("DIRECTIONAL_COOKIE");
_material.DisableKeyword("DIRECTIONAL");
_material.SetTexture("_LightTexture0", _light.cookie);
}
Texture nullTexture = null;
if (_light.shadows != LightShadows.None)
{
_material.EnableKeyword("SHADOWS_DEPTH");
_commandBuffer.Blit(nullTexture, renderer.GetVolumeLightBuffer(), _material, pass);
if (CustomRenderEvent != null)
{
CustomRenderEvent(renderer, this, _commandBuffer, viewProj);
}
}
else
{
_material.DisableKeyword("SHADOWS_DEPTH");
renderer.GlobalCommandBuffer.Blit(nullTexture, renderer.GetVolumeLightBuffer(), _material, pass);
if (CustomRenderEvent != null)
{
CustomRenderEvent(renderer, this, renderer.GlobalCommandBuffer, viewProj);
}
}
}
private void SetupPointLight(Nigiri renderer, Matrix4x4 viewProj)
{
if (_commandBuffer == null)
{
Start();
}
_commandBuffer.Clear();
int pass = 0;
if (!IsCameraInPointLightBounds())
{
pass = 2;
}
_material.SetPass(pass);
Mesh mesh = Nigiri.GetPointLightMesh();
float scale = _light.range * 2.0f;
Matrix4x4 world = Matrix4x4.TRS(transform.position, _light.transform.rotation, new Vector3(scale, scale, scale));
_material.SetMatrix("_WorldViewProj", viewProj * world);
_material.SetMatrix("_WorldView", Camera.current.worldToCameraMatrix * world);
if (Noise)
{
_material.EnableKeyword("NOISE");
}
else
{
_material.DisableKeyword("NOISE");
}
_material.SetVector("_LightPos", new Vector4(_light.transform.position.x, _light.transform.position.y, _light.transform.position.z, 1.0f / (_light.range * _light.range)));
_material.SetColor("_LightColor", _light.color * _light.intensity);
if (_light.cookie == null)
{
_material.EnableKeyword("POINT");
_material.DisableKeyword("POINT_COOKIE");
}
else
{
Matrix4x4 view = Matrix4x4.TRS(_light.transform.position, _light.transform.rotation, Vector3.one).inverse;
_material.SetMatrix("_MyLightMatrix0", view);
_material.EnableKeyword("POINT_COOKIE");
_material.DisableKeyword("POINT");
_material.SetTexture("_LightTexture0", _light.cookie);
}
bool forceShadowsOff = false;
if ((_light.transform.position - Camera.current.transform.position).magnitude >= QualitySettings.shadowDistance)
{
forceShadowsOff = true;
}
if (_light.shadows != LightShadows.None && forceShadowsOff == false)
{
_material.EnableKeyword("SHADOWS_CUBE");
_commandBuffer.SetGlobalTexture("_ShadowMapTexture", BuiltinRenderTextureType.CurrentActive);
_commandBuffer.SetRenderTarget(renderer.GetVolumeLightBuffer());
_commandBuffer.DrawMesh(mesh, world, _material, 0, pass);
if (CustomRenderEvent != null)
{
CustomRenderEvent(renderer, this, _commandBuffer, viewProj);
}
}
else
{
_material.DisableKeyword("SHADOWS_CUBE");
renderer.GlobalCommandBuffer.DrawMesh(mesh, world, _material, 0, pass);
if (CustomRenderEvent != null)
{
CustomRenderEvent(renderer, this, renderer.GlobalCommandBuffer, viewProj);
}
}
}