void SetUpAreaLightBuffers(int kernel)
{
int count = m_AreaLightParamsCB == null ? 0 : m_AreaLightParamsCB.count;
m_InjectLightingAndDensity.SetFloat("_AreaLightsCount", count);
if (count == 0)
{
// Can't not set the buffers/textures
m_InjectLightingAndDensity.SetBuffer(kernel, "_AreaLights", m_DummyCB);
m_InjectLightingAndDensity.SetTexture(kernel, "_AreaLightShadowmap", Texture2D.whiteTexture);
return;
}
if (m_AreaLightParams == null || m_AreaLightParams.Length != count)
{
m_AreaLightParams = new AreaLightParams[count];
}
HashSet <FogLight> fogLights = LightManagerFogLights.Get();
int shadowedAreaLightIndex = -1;
int j = 0;
for (var x = fogLights.GetEnumerator(); x.MoveNext();)
{
var fl = x.Current;
if (fl == null || fl.type != FogLight.Type.Area || !fl.isOn)
{
continue;
}
AreaLight light = fl.areaLight;
m_AreaLightParams[j].mat = light.GetProjectionMatrix(true);
m_AreaLightParams[j].pos = light.GetPosition();
m_AreaLightParams[j].color = new Vector3(light.m_Color.r, light.m_Color.g, light.m_Color.b) * light.m_Intensity * fl.m_IntensityMult;
m_AreaLightParams[j].bounded = fl.m_Bounded ? 1 : 0;
if (fl.m_Shadows)
{
RenderTexture shadowmap = light.GetBlurredShadowmap();
if (shadowmap != null)
{
m_InjectLightingAndDensity.SetTexture(kernel, "_AreaLightShadowmap", shadowmap);
m_InjectLightingAndDensity.SetFloat("_ESMExponentAreaLight", fl.m_ESMExponent);
shadowedAreaLightIndex = j;
}
}
j++;
}
m_AreaLightParamsCB.SetData(m_AreaLightParams);
m_InjectLightingAndDensity.SetBuffer(kernel, "_AreaLights", m_AreaLightParamsCB);
m_InjectLightingAndDensity.SetFloat("_ShadowedAreaLightIndex", shadowedAreaLightIndex < 0 ? fogLights.Count : shadowedAreaLightIndex);
if (shadowedAreaLightIndex < 0)
{
m_InjectLightingAndDensity.SetTexture(kernel, "_AreaLightShadowmap", Texture2D.whiteTexture);
}
}
