public static void RenderLights(this IRenderPass2D pass, RenderingData renderingData, CommandBuffer cmd, int layerToRender, ref LayerBatch layerBatch, ref RenderTextureDescriptor rtDesc)
{
// Before rendering the lights cache some values that are expensive to get/calculate
var culledLights = pass.rendererData.lightCullResult.visibleLights;
for (var i = 0; i < culledLights.Count; i++)
{
culledLights[i].CacheValues();
}
ShadowCasterGroup2DManager.CacheValues();
var blendStyles = pass.rendererData.lightBlendStyles;
for (var i = 0; i < blendStyles.Length; ++i)
{
if ((layerBatch.lightStats.blendStylesUsed & (uint)(1 << i)) == 0)
{
continue;
}
var sampleName = blendStyles[i].name;
cmd.BeginSample(sampleName);
if (!Light2DManager.GetGlobalColor(layerToRender, i, out var clearColor))
{
clearColor = Color.black;
}
var anyLights = (layerBatch.lightStats.blendStylesWithLights & (uint)(1 << i)) != 0;
var desc = rtDesc;
if (!anyLights) // No lights -- create tiny texture
{
desc.width = desc.height = 4;
}
var identifier = layerBatch.GetRTId(cmd, desc, i);
cmd.SetRenderTarget(identifier,
RenderBufferLoadAction.DontCare,
RenderBufferStoreAction.Store,
RenderBufferLoadAction.DontCare,
RenderBufferStoreAction.DontCare);
cmd.ClearRenderTarget(false, true, clearColor);
if (anyLights)
{
RenderLightSet(
pass, renderingData,
i,
cmd,
layerToRender,
identifier,
pass.rendererData.lightCullResult.visibleLights
);
}
cmd.EndSample(sampleName);
}
}