static public void RenderLights(Camera camera, CommandBuffer cmdBuffer, int layerToRender, uint blendStylesUsed)
{
for (int i = 0; i < s_BlendStyles.Length; ++i)
{
if ((blendStylesUsed & (uint)(1 << i)) == 0)
{
continue;
}
string sampleName = s_BlendStyles[i].name;
cmdBuffer.BeginSample(sampleName);
cmdBuffer.SetRenderTarget(s_LightRenderTargets[i].Identifier());
bool rtDirty = false;
Color clearColor;
var globalLight = Light2DManager.GetGlobalLight(layerToRender, i, out clearColor);
//Global light Color
if (!globalLight)
{
clearColor = Color.black;
}
else
{
rtDirty = true;
}
if (s_LightRenderTargetsDirty[i] || rtDirty)
{
cmdBuffer.ClearRenderTarget(false, true, clearColor);
}
//全局光方向
if (globalLight)
{
cmdBuffer.SetGlobalVector("_GlobalLightDirection", globalLight.LightDirection);
}
else
{
cmdBuffer.SetGlobalVector("_GlobalLightDirection", new Vector3(1, 1, 5));
}
rtDirty |= RenderLightSet(camera, i, cmdBuffer, layerToRender, s_LightRenderTargets[i].Identifier(), Light2D.GetLightsByBlendStyle(i));
s_LightRenderTargetsDirty[i] = rtDirty;
cmdBuffer.EndSample(sampleName);
}
}
