private LightShaderGroupDynamic FindOrCreateLightShaderGroup(LightGroupKey lightGroupKey, ProcessLightsParameters parameters)
{
LightShaderGroupDynamic lightShaderGroup;
// Check to see if this combination of parameters has already been stored as a group:
if (!lightShaderGroupPool.TryGetValue(lightGroupKey, out lightShaderGroup))
{
// If a group with the same key has not already been added, create it:
ILightShadowMapShaderGroupData shadowGroupData = CreateShadowMapShaderGroupData(lightGroupKey.ShadowRenderer, lightGroupKey.ShadowType);
lightShaderGroup = CreateLightShaderGroup(parameters.Context, shadowGroupData);
lightShaderGroup.SetViews(parameters.Views);
lightShaderGroupPool.Add(lightGroupKey, lightShaderGroup);
}
return(lightShaderGroup);
}
public override void ProcessLights(ProcessLightsParameters parameters)
{
if (parameters.LightCollection.Count == 0)
{
return;
}
// Check if we have a fallback renderer next in the chain, in case we don't need shadows
bool hasNextRenderer = parameters.RendererIndex < (parameters.Renderers.Length - 1);
ILightShadowMapRenderer currentShadowRenderer = null;
LightShadowType currentShadowType = 0;
// Start by filtering/sorting what can be processed
shadowComparer.ShadowMapTexturesPerLight = parameters.ShadowMapTexturesPerLight;
shadowComparer.Lights = parameters.LightCollection;
parameters.LightIndices.Sort(0, parameters.LightIndices.Count, shadowComparer);
// Loop over the number of lights + 1 where the last iteration will always flush the last batch of lights
for (int j = 0; j < parameters.LightIndices.Count + 1;)
{
// TODO: Eventually move this loop to a separate function that returns a structure.
// These variables will contain the relevant parameters of the next usable light:
LightShadowType nextShadowType = 0;
ILightShadowMapRenderer nextShadowRenderer = null;
LightShadowMapTexture nextShadowTexture = null;
RenderLight nextLight = null;
// Find the next light whose attributes aren't null:
if (j < parameters.LightIndices.Count)
{
nextLight = parameters.LightCollection[parameters.LightIndices[j]];
if (parameters.ShadowMapRenderer != null &&
parameters.ShadowMapTexturesPerLight.TryGetValue(nextLight, out nextShadowTexture) &&
nextShadowTexture.Atlas != null) // atlas could not be allocated? treat it as a non-shadowed texture
{
nextShadowType = nextShadowTexture.ShadowType;
nextShadowRenderer = nextShadowTexture.Renderer;
}
}
// Flush current group
// If we detect that the previous light's attributes don't match the next one's, create a new group (or add to an existing one that has the same attributes):
if (j == parameters.LightIndices.Count ||
currentShadowType != nextShadowType ||
currentShadowRenderer != nextShadowRenderer) // TODO: Refactor this into a little structure instead.
{
if (processedLights.Count > 0)
{
var lightGroupKey = new LightGroupKey(currentShadowRenderer, currentShadowType);
LightShaderGroupDynamic lightShaderGroup = FindOrCreateLightShaderGroup(lightGroupKey, parameters);
// Add view and lights to the current group:
var allowedLightCount = lightShaderGroup.AddView(parameters.ViewIndex, parameters.View, processedLights.Count);
for (int i = 0; i < allowedLightCount; ++i)
{
LightDynamicEntry light = processedLights[i];
lightShaderGroup.AddLight(light.Light, light.ShadowMapTexture);
}
// TODO: assign extra lights to non-shadow rendering if possible
//for (int i = lightCount; i < processedLights.Count; ++i)
// XXX.AddLight(processedLights[i], null);
// Add the current light shader group to the collection if it hasn't already been added:
var lightShaderGroupEntry = new LightShaderGroupEntry <LightGroupKey>(lightGroupKey, lightShaderGroup);
if (!lightShaderGroups.Contains(lightShaderGroupEntry))
{
lightShaderGroups.Add(lightShaderGroupEntry);
}
processedLights.Clear();
}
// Start next group
currentShadowType = nextShadowType;
currentShadowRenderer = nextShadowRenderer;
}
if (j < parameters.LightIndices.Count)
{
// Do we need to process non shadowing lights or defer it to something else?
if (nextShadowTexture == null && hasNextRenderer)
{
// Break out so the remaining lights can be handled by the next renderer
break;
}
parameters.LightIndices.RemoveAt(j);
processedLights.Add(new LightDynamicEntry(nextLight, nextShadowTexture));
}
else
{
j++;
}
}
processedLights.Clear();
}
public LightShaderGroupEntry(LightGroupKey key, LightShaderGroup value)
{
Key = key;
Value = value;
}
public override void ProcessLights(ProcessLightsParameters parameters)
{
if (parameters.LightCollection.Count == 0)
{
return;
}
ILightShadowMapRenderer currentShadowRenderer = null;
LightShadowType currentShadowType = 0;
// Start by filtering/sorting what can be processed
shadowComparer.ShadowMapTexturesPerLight = parameters.ShadowMapTexturesPerLight;
parameters.LightCollection.Sort(parameters.LightStart, parameters.LightEnd - parameters.LightStart, shadowComparer);
for (int index = parameters.LightStart; index <= parameters.LightEnd; index++)
{
LightShadowType nextShadowType = 0;
ILightShadowMapRenderer nextShadowRenderer = null;
LightShadowMapTexture nextShadowTexture = null;
LightComponent nextLight = null;
if (index < parameters.LightEnd)
{
nextLight = parameters.LightCollection[index];
if (parameters.ShadowMapRenderer != null &&
parameters.ShadowMapTexturesPerLight.TryGetValue(nextLight, out nextShadowTexture) &&
nextShadowTexture.Atlas != null) // atlas could not be allocated? treat it as a non-shadowed texture
{
nextShadowType = nextShadowTexture.ShadowType;
nextShadowRenderer = nextShadowTexture.Renderer;
}
}
// Flush current group
if (index == parameters.LightEnd || currentShadowType != nextShadowType || currentShadowRenderer != nextShadowRenderer)
{
if (processedLights.Count > 0)
{
var lightGroupKey = new LightGroupKey(currentShadowRenderer, currentShadowType);
LightShaderGroupDynamic lightShaderGroup;
if (!lightShaderGroupPool.TryGetValue(lightGroupKey, out lightShaderGroup))
{
ILightShadowMapShaderGroupData shadowGroupData = null;
if (currentShadowRenderer != null)
{
shadowGroupData = currentShadowRenderer.CreateShaderGroupData(currentShadowType);
}
lightShaderGroup = CreateLightShaderGroup(parameters.Context, shadowGroupData);
lightShaderGroup.SetViews(parameters.Views);
lightShaderGroupPool.Add(lightGroupKey, lightShaderGroup);
}
// Add view and lights
var allowedLightCount = lightShaderGroup.AddView(parameters.ViewIndex, parameters.View, processedLights.Count);
for (int i = 0; i < allowedLightCount; ++i)
{
var light = processedLights[i];
lightShaderGroup.AddLight(light.Light, light.ShadowMapTexture);
}
// TODO: assign extra lights to non-shadow rendering if possible
//for (int i = lightCount; i < processedLights.Count; ++i)
// XXX.AddLight(processedLights[i], null);
var lightShaderGroupEntry = new LightShaderGroupEntry(lightGroupKey, lightShaderGroup);
if (!lightShaderGroups.Contains(lightShaderGroupEntry))
{
lightShaderGroups.Add(lightShaderGroupEntry);
}
processedLights.Clear();
}
// Start next group
currentShadowType = nextShadowType;
currentShadowRenderer = nextShadowRenderer;
}
if (index < parameters.LightEnd)
{
// Do we need to process non shadowing lights or defer it to something else?
if (nextShadowTexture == null && NonShadowRenderer != null)
{
parameters.LightStart = index;
NonShadowRenderer.ProcessLights(parameters);
break;
}
processedLights.Add(new LightDynamicEntry(nextLight, nextShadowTexture));
}
}
processedLights.Clear();
}
public override void ProcessLights(ProcessLightsParameters parameters)
{
if (parameters.LightCollection.Count == 0)
{
return;
}
// Check if we have a fallback renderer next in the chain, in case we don't need shadows
bool hasNextRenderer = parameters.RendererIndex < (parameters.Renderers.Length - 1);
ILightShadowMapRenderer currentShadowRenderer = null;
LightShadowType currentShadowType = 0;
// Start by filtering/sorting what can be processed
shadowComparer.ShadowMapTexturesPerLight = parameters.ShadowMapTexturesPerLight;
shadowComparer.Lights = parameters.LightCollection;
parameters.LightIndices.Sort(0, parameters.LightIndices.Count, shadowComparer);
// Loop over the number of lights + 1 where the last iteration will always flush the last batch of lights
for (int j = 0; j < parameters.LightIndices.Count + 1;)
{
LightShadowType nextShadowType = 0;
ILightShadowMapRenderer nextShadowRenderer = null;
LightShadowMapTexture nextShadowTexture = null;
LightComponent nextLight = null;
if (j < parameters.LightIndices.Count)
{
nextLight = parameters.LightCollection[parameters.LightIndices[j]];
if (parameters.ShadowMapRenderer != null &&
parameters.ShadowMapTexturesPerLight.TryGetValue(nextLight, out nextShadowTexture) &&
nextShadowTexture.Atlas != null) // atlas could not be allocated? treat it as a non-shadowed texture
{
nextShadowType = nextShadowTexture.ShadowType;
nextShadowRenderer = nextShadowTexture.Renderer;
}
}
// Flush current group
if (j == parameters.LightIndices.Count || currentShadowType != nextShadowType || currentShadowRenderer != nextShadowRenderer)
{
if (processedLights.Count > 0)
{
var lightGroupKey = new LightGroupKey(currentShadowRenderer, currentShadowType);
LightShaderGroupDynamic lightShaderGroup;
if (!lightShaderGroupPool.TryGetValue(lightGroupKey, out lightShaderGroup))
{
ILightShadowMapShaderGroupData shadowGroupData = null;
if (currentShadowRenderer != null)
{
shadowGroupData = currentShadowRenderer.CreateShaderGroupData(currentShadowType);
}
lightShaderGroup = CreateLightShaderGroup(parameters.Context, shadowGroupData);
lightShaderGroup.SetViews(parameters.Views);
lightShaderGroupPool.Add(lightGroupKey, lightShaderGroup);
}
// Add view and lights
var allowedLightCount = lightShaderGroup.AddView(parameters.ViewIndex, parameters.View, processedLights.Count);
for (int i = 0; i < allowedLightCount; ++i)
{
var light = processedLights[i];
lightShaderGroup.AddLight(light.Light, light.ShadowMapTexture);
}
// TODO: assign extra lights to non-shadow rendering if possible
//for (int i = lightCount; i < processedLights.Count; ++i)
// XXX.AddLight(processedLights[i], null);
var lightShaderGroupEntry = new LightShaderGroupEntry(lightGroupKey, lightShaderGroup);
if (!lightShaderGroups.Contains(lightShaderGroupEntry))
{
lightShaderGroups.Add(lightShaderGroupEntry);
}
processedLights.Clear();
}
// Start next group
currentShadowType = nextShadowType;
currentShadowRenderer = nextShadowRenderer;
}
if (j < parameters.LightIndices.Count)
{
// Do we need to process non shadowing lights or defer it to something else?
if (nextShadowTexture == null && hasNextRenderer)
{
// Break out so the remaining lights can be handled by the next renderer
break;
}
parameters.LightIndices.RemoveAt(j);
processedLights.Add(new LightDynamicEntry(nextLight, nextShadowTexture));
}
else
{
j++;
}
}
processedLights.Clear();
}
