internal InstancingDraw(InstancingRenderer renderer, ComputeShader visShader, ComputeShader sortShader)
{
_renderer = renderer;
_visShader = visShader;
_sortShader = sortShader;
SetShadow(renderer.CastShadow, renderer.ReceiveShadow);
_drawInstanceDataForLod = new ComputeBuffer[MaxLodLevelCount];
// assume 20 drawcalls at most for each lod level
var argsArray = new int[ArgCountPerDraw * 20];
for (int i = 0; i < argsArray.Length; ++i)
{
argsArray[i] = 0;
}
var lodLevelCount = renderer.LodLevelCount;
_argsData = new ComputeBuffer[lodLevelCount];
for (int i = 0; i < lodLevelCount; ++i)
{
var lodRenderer = renderer.GetLodRenderer(i);
var count = lodRenderer.Renderers.Length;
int drawCallIndex = 0;
for (int j = 0; j < count; ++j)
{
if (lodRenderer.Renderers[j] == null)
{
continue;
}
for (int k = 0; k < lodRenderer.Renderers[j].SubMeshCount; ++k)
{
argsArray[drawCallIndex] = lodRenderer.Renderers[j].IndexCount[k];
drawCallIndex += ArgCountPerDraw;
}
}
if (drawCallIndex != 0)
{
_argsData[i] = new ComputeBuffer(1, drawCallIndex * sizeof(uint), ComputeBufferType.IndirectArguments);
_argsData[i].SetData(argsArray);
}
}
if (renderer.LodRatios != null)
{
_lodSize = renderer.LodSize;
_lodRatios = renderer.LodRatios;
}
}
internal InstancingDraw(InstancingRenderer renderer, ComputeShader visShader)
{
_renderer = renderer;
_visShader = visShader;
SetShadow(ShadowCastingMode.Off, false);
_drawInstanceData = new ComputeBuffer[MaxLodLevelCount];
// index count per instance, instance count, start index location, base vertex location, start instance location.
var argsArray = new int[ArgCountPerDraw * 20];
for (int i = 0; i < argsArray.Length; ++i)
{
argsArray[i] = 0;
}
var lodLevelCount = renderer.LodLevelCount;
_argsData = new ComputeBuffer[lodLevelCount];
for (int i = 0; i < lodLevelCount; ++i)
{
var lodRenderer = renderer.GetLodRenderer(i);
var count = lodRenderer.Renderers.Length;
int drawCallIndex = 0;
for (int j = 0; j < count; ++j)
{
for (int k = 0; k < lodRenderer.Renderers[j].SubMeshCount; ++k)
{
argsArray[drawCallIndex] = lodRenderer.Renderers[j].IndexCount[k];
drawCallIndex += ArgCountPerDraw;
}
}
_argsData[i] = new ComputeBuffer(1, drawCallIndex * sizeof(uint), ComputeBufferType.IndirectArguments);
_argsData[i].SetData(argsArray);
}
if (_lodRatios != null)
{
_lodSize = renderer.LodSize;
_lodRatios = renderer.LodRatios;
}
}